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428
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1 /* File IO for XEmacs.
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2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
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771
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3 Copyright (C) 1996, 2001, 2002 Ben Wing.
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428
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Mule 2.0, FSF 19.30. */
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771
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23 /* More syncing: FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org>
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24 (Note: Sync messages from Marc Paquette may indicate
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25 incomplete synching, so beware.) */
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26 /* Mule-ized completely except for the #if 0-code including decrypt-string
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27 and encrypt-string. --ben 7-2-00 */
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28
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428
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29
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30 #include <config.h>
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31 #include "lisp.h"
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32
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33 #include "buffer.h"
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800
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34 #include "device.h"
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428
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35 #include "events.h"
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800
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36 #include "file-coding.h"
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428
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37 #include "frame.h"
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38 #include "insdel.h"
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39 #include "lstream.h"
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40 #include "redisplay.h"
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41 #include "sysdep.h"
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42 #include "window.h" /* minibuf_level */
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771
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43
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428
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44 #include "sysfile.h"
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45 #include "sysproc.h"
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46 #include "syspwd.h"
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47 #include "systime.h"
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48 #include "sysdir.h"
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49
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50 #ifdef HPUX
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51 #include <netio.h>
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52 #ifdef HPUX_PRE_8_0
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53 #include <errnet.h>
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54 #endif /* HPUX_PRE_8_0 */
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|
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55 #endif /* HPUX */
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56
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771
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57 #if defined (WIN32_NATIVE) || defined (CYGWIN)
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657
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58 #define WIN32_FILENAMES
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771
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59 #include "syswindows.h"
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428
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60 #define IS_DRIVE(x) isalpha (x)
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61 /* Need to lower-case the drive letter, or else expanded
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62 filenames will sometimes compare inequal, because
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63 `expand-file-name' doesn't always down-case the drive letter. */
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64 #define DRIVE_LETTER(x) tolower (x)
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657
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65 #endif /* WIN32_NATIVE || CYGWIN */
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428
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66
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67 int lisp_to_time (Lisp_Object, time_t *);
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68 Lisp_Object time_to_lisp (time_t);
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69
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70 /* Nonzero during writing of auto-save files */
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71 static int auto_saving;
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72
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73 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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74 will create a new file with the same mode as the original */
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75 static int auto_save_mode_bits;
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76
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77 /* Alist of elements (REGEXP . HANDLER) for file names
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78 whose I/O is done with a special handler. */
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79 Lisp_Object Vfile_name_handler_alist;
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80
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81 /* Format for auto-save files */
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82 Lisp_Object Vauto_save_file_format;
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83
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84 /* Lisp functions for translating file formats */
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85 Lisp_Object Qformat_decode, Qformat_annotate_function;
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86
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87 /* Functions to be called to process text properties in inserted file. */
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88 Lisp_Object Vafter_insert_file_functions;
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89
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90 /* Functions to be called to create text property annotations for file. */
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91 Lisp_Object Vwrite_region_annotate_functions;
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92
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93 /* During build_annotations, each time an annotation function is called,
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94 this holds the annotations made by the previous functions. */
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95 Lisp_Object Vwrite_region_annotations_so_far;
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96
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97 /* File name in which we write a list of all our auto save files. */
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98 Lisp_Object Vauto_save_list_file_name;
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99
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444
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100 /* Prefix used to construct Vauto_save_list_file_name. */
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101 Lisp_Object Vauto_save_list_file_prefix;
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102
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103 /* When non-nil, it prevents auto-save list file creation. */
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104 int inhibit_auto_save_session;
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105
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428
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106 int disable_auto_save_when_buffer_shrinks;
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107
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108 Lisp_Object Vdirectory_sep_char;
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109
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110 /* These variables describe handlers that have "already" had a chance
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111 to handle the current operation.
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112
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113 Vinhibit_file_name_handlers is a list of file name handlers.
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114 Vinhibit_file_name_operation is the operation being handled.
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115 If we try to handle that operation, we ignore those handlers. */
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116
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117 static Lisp_Object Vinhibit_file_name_handlers;
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118 static Lisp_Object Vinhibit_file_name_operation;
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119
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563
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120 Lisp_Object Qfile_already_exists;
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428
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121
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122 Lisp_Object Qauto_save_hook;
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123 Lisp_Object Qauto_save_error;
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124 Lisp_Object Qauto_saving;
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125
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126 Lisp_Object Qcar_less_than_car;
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127
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128 Lisp_Object Qcompute_buffer_file_truename;
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129
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130 EXFUN (Frunning_temacs_p, 0);
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131
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563
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132 /* DATA can be anything acceptable to signal_error ().
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133 */
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134
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135 DOESNT_RETURN
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136 report_file_type_error (Lisp_Object errtype, Lisp_Object oserrmess,
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665
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137 const CIntbyte *string, Lisp_Object data)
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563
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138 {
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139 struct gcpro gcpro1;
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140 Lisp_Object errdata = build_error_data (NULL, data);
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141
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142 GCPRO1 (errdata);
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771
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143 errdata = Fcons (build_msg_string (string),
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563
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144 Fcons (oserrmess, errdata));
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145 signal_error_1 (errtype, errdata);
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801
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146 /* UNGCPRO; not reached */
|
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563
|
147 }
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148
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149 DOESNT_RETURN
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150 report_error_with_errno (Lisp_Object errtype,
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665
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151 const CIntbyte *string, Lisp_Object data)
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563
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152 {
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153 report_file_type_error (errtype, lisp_strerror (errno), string, data);
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154 }
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155
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428
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156 /* signal a file error when errno contains a meaningful value. */
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157
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158 DOESNT_RETURN
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665
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159 report_file_error (const CIntbyte *string, Lisp_Object data)
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428
|
160 {
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563
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161 report_error_with_errno (Qfile_error, string, data);
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428
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162 }
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163
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164
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165 /* Just like strerror(3), except return a lisp string instead of char *.
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166 The string needs to be converted since it may be localized.
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771
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167 */
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428
|
168 Lisp_Object
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169 lisp_strerror (int errnum)
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170 {
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771
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171 Extbyte *ret = strerror (errnum);
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172 if (!ret)
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173 {
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174 Intbyte ffff[99];
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175 qxesprintf (ffff, "Unknown error %d", errnum);
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176 return build_intstring (ffff);
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177 }
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178 return build_ext_string (ret, Qstrerror_encoding);
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428
|
179 }
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180
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181 static Lisp_Object
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182 close_file_unwind (Lisp_Object fd)
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183 {
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184 if (CONSP (fd))
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185 {
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186 if (INTP (XCAR (fd)))
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771
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187 retry_close (XINT (XCAR (fd)));
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428
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188
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189 free_cons (XCONS (fd));
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190 }
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191 else
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771
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192 retry_close (XINT (fd));
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428
|
193
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194 return Qnil;
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195 }
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196
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197 static Lisp_Object
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198 delete_stream_unwind (Lisp_Object stream)
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199 {
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200 Lstream_delete (XLSTREAM (stream));
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201 return Qnil;
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202 }
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203
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204 /* Restore point, having saved it as a marker. */
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205
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206 static Lisp_Object
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207 restore_point_unwind (Lisp_Object point_marker)
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|
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208 {
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209 BUF_SET_PT (current_buffer, marker_position (point_marker));
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210 return Fset_marker (point_marker, Qnil, Qnil);
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211 }
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212
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213
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214 Lisp_Object Qexpand_file_name;
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215 Lisp_Object Qfile_truename;
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216 Lisp_Object Qsubstitute_in_file_name;
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217 Lisp_Object Qdirectory_file_name;
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218 Lisp_Object Qfile_name_directory;
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219 Lisp_Object Qfile_name_nondirectory;
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220 Lisp_Object Qunhandled_file_name_directory;
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221 Lisp_Object Qfile_name_as_directory;
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222 Lisp_Object Qcopy_file;
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223 Lisp_Object Qmake_directory_internal;
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224 Lisp_Object Qdelete_directory;
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225 Lisp_Object Qdelete_file;
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226 Lisp_Object Qrename_file;
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227 Lisp_Object Qadd_name_to_file;
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228 Lisp_Object Qmake_symbolic_link;
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844
|
229 Lisp_Object Qmake_temp_name;
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428
|
230 Lisp_Object Qfile_exists_p;
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231 Lisp_Object Qfile_executable_p;
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232 Lisp_Object Qfile_readable_p;
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233 Lisp_Object Qfile_symlink_p;
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234 Lisp_Object Qfile_writable_p;
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235 Lisp_Object Qfile_directory_p;
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236 Lisp_Object Qfile_regular_p;
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237 Lisp_Object Qfile_accessible_directory_p;
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238 Lisp_Object Qfile_modes;
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239 Lisp_Object Qset_file_modes;
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240 Lisp_Object Qfile_newer_than_file_p;
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241 Lisp_Object Qinsert_file_contents;
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242 Lisp_Object Qwrite_region;
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243 Lisp_Object Qverify_visited_file_modtime;
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244 Lisp_Object Qset_visited_file_modtime;
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245
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246 /* If FILENAME is handled specially on account of its syntax,
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247 return its handler function. Otherwise, return nil. */
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248
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249 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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250 Return FILENAME's handler function for OPERATION, if it has one.
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|
251 Otherwise, return nil.
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252 A file name is handled if one of the regular expressions in
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253 `file-name-handler-alist' matches it.
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254
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|
|
255 If OPERATION equals `inhibit-file-name-operation', then we ignore
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|
256 any handlers that are members of `inhibit-file-name-handlers',
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257 but we still do run any other handlers. This lets handlers
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258 use the standard functions without calling themselves recursively.
|
|
751
|
259
|
|
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260 Otherwise, OPERATION is the name of a funcall'able function.
|
|
428
|
261 */
|
|
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262 (filename, operation))
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|
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263 {
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|
|
264 /* This function does not GC */
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|
|
265 /* This function can be called during GC */
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|
|
266 /* This function must not munge the match data. */
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267 Lisp_Object chain, inhibited_handlers;
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268
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|
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269 CHECK_STRING (filename);
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270
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|
271 if (EQ (operation, Vinhibit_file_name_operation))
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272 inhibited_handlers = Vinhibit_file_name_handlers;
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|
273 else
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|
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274 inhibited_handlers = Qnil;
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275
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|
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276 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
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|
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277 {
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|
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278 Lisp_Object elt = XCAR (chain);
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279 if (CONSP (elt))
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280 {
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281 Lisp_Object string = XCAR (elt);
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282 if (STRINGP (string)
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283 && (fast_lisp_string_match (string, filename) >= 0))
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284 {
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|
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285 Lisp_Object handler = XCDR (elt);
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|
286 if (NILP (Fmemq (handler, inhibited_handlers)))
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|
287 return handler;
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|
|
288 }
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|
|
289 }
|
|
|
290 QUIT;
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|
|
291 }
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|
|
292 return Qnil;
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|
|
293 }
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|
|
294
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|
|
295 static Lisp_Object
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|
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296 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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|
|
297 {
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|
|
298 /* This function can call lisp */
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|
299 Lisp_Object result = call2 (fn, arg0, arg1);
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|
|
300 CHECK_STRING (result);
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|
|
301 return result;
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|
|
302 }
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|
303
|
|
|
304 static Lisp_Object
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305 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
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|
|
306 {
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|
|
307 /* This function can call lisp */
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|
308 Lisp_Object result = call2 (fn, arg0, arg1);
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|
|
309 if (!NILP (result))
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|
|
310 CHECK_STRING (result);
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|
|
311 return result;
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|
|
312 }
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|
|
313
|
|
|
314 static Lisp_Object
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|
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315 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
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|
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316 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
317 {
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|
|
318 /* This function can call lisp */
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|
|
319 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
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|
|
320 CHECK_STRING (result);
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|
|
321 return result;
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|
|
322 }
|
|
|
323
|
|
|
324
|
|
|
325 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
444
|
326 Return the directory component in file name FILENAME.
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|
|
327 Return nil if FILENAME does not include a directory.
|
|
428
|
328 Otherwise return a directory spec.
|
|
|
329 Given a Unix syntax file name, returns a string ending in slash.
|
|
|
330 */
|
|
444
|
331 (filename))
|
|
428
|
332 {
|
|
442
|
333 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
334 /* This function synched with Emacs 21.0.103. */
|
|
665
|
335 Intbyte *beg;
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|
|
336 Intbyte *p;
|
|
428
|
337 Lisp_Object handler;
|
|
|
338
|
|
444
|
339 CHECK_STRING (filename);
|
|
428
|
340
|
|
|
341 /* If the file name has special constructs in it,
|
|
|
342 call the corresponding file handler. */
|
|
444
|
343 handler = Ffind_file_name_handler (filename, Qfile_name_directory);
|
|
428
|
344 if (!NILP (handler))
|
|
444
|
345 return call2_check_string_or_nil (handler, Qfile_name_directory, filename);
|
|
428
|
346
|
|
|
347 #ifdef FILE_SYSTEM_CASE
|
|
444
|
348 filename = FILE_SYSTEM_CASE (filename);
|
|
428
|
349 #endif
|
|
444
|
350 beg = XSTRING_DATA (filename);
|
|
771
|
351 /* XEmacs: no need to alloca-copy here */
|
|
444
|
352 p = beg + XSTRING_LENGTH (filename);
|
|
428
|
353
|
|
771
|
354 while (p != beg && !IS_DIRECTORY_SEP (p[-1])
|
|
657
|
355 #ifdef WIN32_FILENAMES
|
|
771
|
356 /* only recognise drive specifier at the beginning */
|
|
|
357 && !(p[-1] == ':'
|
|
|
358 /* handle the "/:d:foo" and "/:foo" cases correctly */
|
|
|
359 && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg))
|
|
|
360 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
|
|
428
|
361 #endif
|
|
771
|
362 ) p--;
|
|
428
|
363
|
|
|
364 if (p == beg)
|
|
|
365 return Qnil;
|
|
442
|
366 #ifdef WIN32_NATIVE
|
|
428
|
367 /* Expansion of "c:" to drive and default directory. */
|
|
771
|
368 if (p[-1] == ':')
|
|
428
|
369 {
|
|
771
|
370 Intbyte *res;
|
|
|
371 Intbyte *wd = mswindows_getdcwd (toupper (*beg) - 'A' + 1);
|
|
|
372
|
|
|
373 res = alloca_array (Intbyte,
|
|
|
374 (wd ? qxestrlen (wd) : 0) + 10); /* go overboard */
|
|
|
375 if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':')
|
|
|
376 {
|
|
|
377 qxestrncpy (res, beg, 2);
|
|
|
378 beg += 2;
|
|
|
379 }
|
|
|
380
|
|
|
381 if (wd)
|
|
428
|
382 {
|
|
771
|
383 qxestrcat (res, wd);
|
|
|
384 if (!IS_DIRECTORY_SEP (res[qxestrlen (res) - 1]))
|
|
|
385 qxestrcat (res, (Intbyte *) "/");
|
|
428
|
386 beg = res;
|
|
771
|
387 p = beg + qxestrlen (beg);
|
|
428
|
388 }
|
|
771
|
389 if (wd)
|
|
|
390 xfree (wd);
|
|
428
|
391 }
|
|
771
|
392
|
|
|
393 #if 0 /* No! This screws up efs, which calls file-name-directory on URL's
|
|
|
394 and expects the slashes to be left alone. This is here because of
|
|
|
395 an analogous call in FSF 21. */
|
|
|
396 {
|
|
|
397 Bytecount len = p - beg;
|
|
|
398 Intbyte *newbeg = alloca_intbytes (len + 1);
|
|
|
399 Lisp_Object return_me;
|
|
|
400
|
|
|
401 qxestrncpy (newbeg, beg, len);
|
|
|
402 newbeg[len] = '\0';
|
|
|
403 newbeg = mswindows_canonicalize_filename (newbeg);
|
|
|
404 return_me = build_intstring (newbeg);
|
|
|
405 xfree (newbeg);
|
|
|
406 return return_me;
|
|
|
407 }
|
|
|
408 #endif
|
|
|
409 #endif /* not WIN32_NATIVE */
|
|
428
|
410 return make_string (beg, p - beg);
|
|
|
411 }
|
|
|
412
|
|
|
413 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
444
|
414 Return file name FILENAME sans its directory.
|
|
428
|
415 For example, in a Unix-syntax file name,
|
|
|
416 this is everything after the last slash,
|
|
|
417 or the entire name if it contains no slash.
|
|
|
418 */
|
|
444
|
419 (filename))
|
|
428
|
420 {
|
|
442
|
421 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
422 /* This function synched with Emacs 21.0.103. */
|
|
665
|
423 Intbyte *beg, *p, *end;
|
|
428
|
424 Lisp_Object handler;
|
|
|
425
|
|
444
|
426 CHECK_STRING (filename);
|
|
428
|
427
|
|
|
428 /* If the file name has special constructs in it,
|
|
|
429 call the corresponding file handler. */
|
|
444
|
430 handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory);
|
|
428
|
431 if (!NILP (handler))
|
|
444
|
432 return call2_check_string (handler, Qfile_name_nondirectory, filename);
|
|
|
433
|
|
|
434 beg = XSTRING_DATA (filename);
|
|
|
435 end = p = beg + XSTRING_LENGTH (filename);
|
|
428
|
436
|
|
771
|
437 while (p != beg && !IS_DIRECTORY_SEP (p[-1])
|
|
657
|
438 #ifdef WIN32_FILENAMES
|
|
771
|
439 /* only recognise drive specifier at beginning */
|
|
|
440 && !(p[-1] == ':'
|
|
|
441 /* handle the "/:d:foo" case correctly */
|
|
|
442 && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
|
|
428
|
443 #endif
|
|
771
|
444 )
|
|
|
445 p--;
|
|
428
|
446
|
|
|
447 return make_string (p, end - p);
|
|
|
448 }
|
|
|
449
|
|
|
450 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
|
451 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
452 A `directly usable' directory name is one that may be used without the
|
|
|
453 intervention of any file handler.
|
|
|
454 If FILENAME is a directly usable file itself, return
|
|
|
455 \(file-name-directory FILENAME).
|
|
|
456 The `call-process' and `start-process' functions use this function to
|
|
|
457 get a current directory to run processes in.
|
|
|
458 */
|
|
444
|
459 (filename))
|
|
428
|
460 {
|
|
442
|
461 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
462 Lisp_Object handler;
|
|
|
463
|
|
|
464 /* If the file name has special constructs in it,
|
|
|
465 call the corresponding file handler. */
|
|
|
466 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
467 if (!NILP (handler))
|
|
|
468 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
469 filename);
|
|
|
470
|
|
|
471 return Ffile_name_directory (filename);
|
|
|
472 }
|
|
|
473
|
|
|
474
|
|
771
|
475 static Intbyte *
|
|
|
476 file_name_as_directory (Intbyte *out, Intbyte *in)
|
|
428
|
477 {
|
|
442
|
478 /* This function cannot GC */
|
|
771
|
479 int size = qxestrlen (in);
|
|
428
|
480
|
|
|
481 if (size == 0)
|
|
|
482 {
|
|
|
483 out[0] = '.';
|
|
|
484 out[1] = DIRECTORY_SEP;
|
|
|
485 out[2] = '\0';
|
|
|
486 }
|
|
|
487 else
|
|
|
488 {
|
|
771
|
489 qxestrcpy (out, in);
|
|
428
|
490 /* Append a slash if necessary */
|
|
|
491 if (!IS_ANY_SEP (out[size-1]))
|
|
|
492 {
|
|
|
493 out[size] = DIRECTORY_SEP;
|
|
|
494 out[size + 1] = '\0';
|
|
|
495 }
|
|
|
496 }
|
|
|
497 return out;
|
|
|
498 }
|
|
|
499
|
|
|
500 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
|
501 Return a string representing file FILENAME interpreted as a directory.
|
|
|
502 This operation exists because a directory is also a file, but its name as
|
|
|
503 a directory is different from its name as a file.
|
|
|
504 The result can be used as the value of `default-directory'
|
|
|
505 or passed as second argument to `expand-file-name'.
|
|
|
506 For a Unix-syntax file name, just appends a slash,
|
|
|
507 except for (file-name-as-directory \"\") => \"./\".
|
|
|
508 */
|
|
444
|
509 (filename))
|
|
428
|
510 {
|
|
442
|
511 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
512 Intbyte *buf;
|
|
428
|
513 Lisp_Object handler;
|
|
|
514
|
|
444
|
515 CHECK_STRING (filename);
|
|
428
|
516
|
|
|
517 /* If the file name has special constructs in it,
|
|
|
518 call the corresponding file handler. */
|
|
444
|
519 handler = Ffind_file_name_handler (filename, Qfile_name_as_directory);
|
|
428
|
520 if (!NILP (handler))
|
|
444
|
521 return call2_check_string (handler, Qfile_name_as_directory, filename);
|
|
|
522
|
|
771
|
523 buf = alloca_intbytes (XSTRING_LENGTH (filename) + 10);
|
|
|
524 return build_intstring (file_name_as_directory (buf, XSTRING_DATA (filename)));
|
|
428
|
525 }
|
|
|
526
|
|
|
527 /*
|
|
|
528 * Convert from directory name to filename.
|
|
|
529 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
|
530 *
|
|
|
531 * Value is nonzero if the string output is different from the input.
|
|
|
532 */
|
|
|
533
|
|
|
534 static int
|
|
771
|
535 directory_file_name (const Intbyte *src, Intbyte *dst)
|
|
428
|
536 {
|
|
442
|
537 /* This function cannot GC */
|
|
771
|
538 long slen = qxestrlen (src);
|
|
428
|
539 /* Process as Unix format: just remove any final slash.
|
|
|
540 But leave "/" unchanged; do not change it to "". */
|
|
771
|
541 qxestrcpy (dst, src);
|
|
428
|
542 if (slen > 1
|
|
|
543 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
657
|
544 #ifdef WIN32_FILENAMES
|
|
428
|
545 && !IS_ANY_SEP (dst[slen - 2])
|
|
657
|
546 #endif /* WIN32_FILENAMES */
|
|
428
|
547 )
|
|
|
548 dst[slen - 1] = 0;
|
|
|
549 return 1;
|
|
|
550 }
|
|
|
551
|
|
|
552 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
444
|
553 Return the file name of the directory named DIRECTORY.
|
|
|
554 This is the name of the file that holds the data for the directory.
|
|
428
|
555 This operation exists because a directory is also a file, but its name as
|
|
|
556 a directory is different from its name as a file.
|
|
|
557 In Unix-syntax, this function just removes the final slash.
|
|
|
558 */
|
|
|
559 (directory))
|
|
|
560 {
|
|
442
|
561 /* This function can GC. GC checked 2000-07-28 ben */
|
|
771
|
562 Intbyte *buf;
|
|
428
|
563 Lisp_Object handler;
|
|
|
564
|
|
|
565 CHECK_STRING (directory);
|
|
|
566
|
|
|
567 #if 0 /* #### WTF? */
|
|
|
568 if (NILP (directory))
|
|
|
569 return Qnil;
|
|
|
570 #endif
|
|
|
571
|
|
|
572 /* If the file name has special constructs in it,
|
|
|
573 call the corresponding file handler. */
|
|
|
574 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
575 if (!NILP (handler))
|
|
|
576 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
851
|
577 buf = (Intbyte *) ALLOCA (XSTRING_LENGTH (directory) + 20);
|
|
771
|
578 directory_file_name (XSTRING_DATA (directory), buf);
|
|
|
579 return build_intstring (buf);
|
|
428
|
580 }
|
|
|
581
|
|
|
582 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
583 proved too broken for our purposes (it supported only 26 or 62
|
|
|
584 unique names under some implementations). For example, this
|
|
|
585 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
586
|
|
|
587 This implementation is better than what one usually finds in libc.
|
|
|
588 --hniksic */
|
|
|
589
|
|
442
|
590 static unsigned int temp_name_rand;
|
|
|
591
|
|
428
|
592 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
442
|
593 Generate a temporary file name starting with PREFIX.
|
|
428
|
594 The Emacs process number forms part of the result, so there is no
|
|
|
595 danger of generating a name being used by another process.
|
|
|
596
|
|
|
597 In addition, this function makes an attempt to choose a name that
|
|
|
598 does not specify an existing file. To make this work, PREFIX should
|
|
844
|
599 be an absolute file name. A reasonable idiom is
|
|
|
600
|
|
|
601 \(make-temp-name (expand-file-name "myprefix" (temp-directory)))
|
|
|
602
|
|
|
603 which puts the file in the OS-specified temporary directory.
|
|
428
|
604 */
|
|
|
605 (prefix))
|
|
|
606 {
|
|
442
|
607 static const char tbl[64] =
|
|
|
608 {
|
|
428
|
609 'A','B','C','D','E','F','G','H',
|
|
|
610 'I','J','K','L','M','N','O','P',
|
|
|
611 'Q','R','S','T','U','V','W','X',
|
|
|
612 'Y','Z','a','b','c','d','e','f',
|
|
|
613 'g','h','i','j','k','l','m','n',
|
|
|
614 'o','p','q','r','s','t','u','v',
|
|
|
615 'w','x','y','z','0','1','2','3',
|
|
442
|
616 '4','5','6','7','8','9','-','_'
|
|
|
617 };
|
|
428
|
618
|
|
|
619 Bytecount len;
|
|
665
|
620 Intbyte *p, *data;
|
|
844
|
621 Lisp_Object handler;
|
|
428
|
622
|
|
|
623 CHECK_STRING (prefix);
|
|
844
|
624 handler = Ffind_file_name_handler (prefix, Qmake_temp_name);
|
|
|
625 if (!NILP (handler))
|
|
|
626 return call2_check_string (handler, Qmake_temp_name, prefix);
|
|
428
|
627
|
|
|
628 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
629 a bad idea because:
|
|
|
630
|
|
|
631 1) It might change the prefix, so the resulting string might not
|
|
|
632 begin with PREFIX. This violates the principle of least
|
|
|
633 surprise.
|
|
|
634
|
|
|
635 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
636 the code that uses (make-temp-name "") instead of
|
|
|
637 (make-temp-name "./").
|
|
|
638
|
|
844
|
639 [[ 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
640 of EFS and file name handlers.]] Now that we check for a handler,
|
|
|
641 that's less of a concern. --ben */
|
|
428
|
642
|
|
|
643 len = XSTRING_LENGTH (prefix);
|
|
771
|
644 data = alloca_intbytes (len + 7);
|
|
428
|
645 memcpy (data, XSTRING_DATA (prefix), len);
|
|
|
646 p = data + len;
|
|
771
|
647 p[6] = '\0';
|
|
428
|
648
|
|
|
649 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
650 are the PID of this process, in base 64, and the second three are
|
|
442
|
651 a pseudo-random number seeded from process startup time. This
|
|
|
652 ensures 262144 unique file names per PID per PREFIX per machine. */
|
|
|
653
|
|
|
654 {
|
|
771
|
655 unsigned int pid = (unsigned int) qxe_getpid ();
|
|
442
|
656 *p++ = tbl[(pid >> 0) & 63];
|
|
|
657 *p++ = tbl[(pid >> 6) & 63];
|
|
|
658 *p++ = tbl[(pid >> 12) & 63];
|
|
|
659 }
|
|
428
|
660
|
|
|
661 /* Here we try to minimize useless stat'ing when this function is
|
|
|
662 invoked many times successively with the same PREFIX. We achieve
|
|
442
|
663 this by using a very pseudo-random number generator to generate
|
|
|
664 file names unique to this process, with a very long cycle. */
|
|
428
|
665
|
|
|
666 while (1)
|
|
|
667 {
|
|
|
668 struct stat ignored;
|
|
442
|
669
|
|
|
670 p[0] = tbl[(temp_name_rand >> 0) & 63];
|
|
|
671 p[1] = tbl[(temp_name_rand >> 6) & 63];
|
|
|
672 p[2] = tbl[(temp_name_rand >> 12) & 63];
|
|
428
|
673
|
|
|
674 /* Poor man's congruential RN generator. Replace with ++count
|
|
|
675 for debugging. */
|
|
442
|
676 temp_name_rand += 25229;
|
|
|
677 temp_name_rand %= 225307;
|
|
428
|
678
|
|
|
679 QUIT;
|
|
|
680
|
|
771
|
681 if (qxe_stat (data, &ignored) < 0)
|
|
428
|
682 {
|
|
|
683 /* We want to return only if errno is ENOENT. */
|
|
|
684 if (errno == ENOENT)
|
|
771
|
685 return make_string (data, len + 6);
|
|
428
|
686
|
|
|
687 /* The error here is dubious, but there is little else we
|
|
|
688 can do. The alternatives are to return nil, which is
|
|
|
689 as bad as (and in many cases worse than) throwing the
|
|
|
690 error, or to ignore the error, which will likely result
|
|
|
691 in inflooping. */
|
|
|
692 report_file_error ("Cannot create temporary name for prefix",
|
|
563
|
693 prefix);
|
|
428
|
694 return Qnil; /* not reached */
|
|
|
695 }
|
|
|
696 }
|
|
|
697 }
|
|
|
698
|
|
|
699
|
|
771
|
700
|
|
428
|
701 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
|
702 Convert filename NAME to absolute, and canonicalize it.
|
|
|
703 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
704 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
444
|
705 the current buffer's value of `default-directory' is used.
|
|
428
|
706 File name components that are `.' are removed, and
|
|
|
707 so are file name components followed by `..', along with the `..' itself;
|
|
|
708 note that these simplifications are done without checking the resulting
|
|
|
709 file names in the file system.
|
|
|
710 An initial `~/' expands to your home directory.
|
|
|
711 An initial `~USER/' expands to USER's home directory.
|
|
|
712 See also the function `substitute-in-file-name'.
|
|
|
713 */
|
|
|
714 (name, default_directory))
|
|
|
715 {
|
|
771
|
716 /* This function can GC. GC-checked 2000-11-18.
|
|
|
717 This function synched with Emacs 21.0.103. */
|
|
665
|
718 Intbyte *nm;
|
|
|
719
|
|
|
720 Intbyte *newdir, *p, *o;
|
|
428
|
721 int tlen;
|
|
665
|
722 Intbyte *target;
|
|
657
|
723 #ifdef WIN32_FILENAMES
|
|
428
|
724 int drive = 0;
|
|
|
725 int collapse_newdir = 1;
|
|
771
|
726 /* XEmacs note: This concerns the special '/:' syntax for preventing
|
|
|
727 wildcards and such. We don't support this currently but I'm
|
|
|
728 keeping the code here in case we do. */
|
|
|
729 int is_escaped = 0;
|
|
657
|
730 #endif
|
|
|
731 #ifndef WIN32_NATIVE
|
|
428
|
732 struct passwd *pw;
|
|
771
|
733 #endif
|
|
428
|
734 int length;
|
|
446
|
735 Lisp_Object handler = Qnil;
|
|
|
736 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
442
|
737
|
|
|
738 /* both of these get set below */
|
|
446
|
739 GCPRO3 (name, default_directory, handler);
|
|
428
|
740
|
|
|
741 CHECK_STRING (name);
|
|
|
742
|
|
|
743 /* If the file name has special constructs in it,
|
|
|
744 call the corresponding file handler. */
|
|
|
745 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
746 if (!NILP (handler))
|
|
446
|
747 RETURN_UNGCPRO (call3_check_string (handler, Qexpand_file_name,
|
|
|
748 name, default_directory));
|
|
428
|
749
|
|
|
750 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
751 if (NILP (default_directory))
|
|
|
752 default_directory = current_buffer->directory;
|
|
|
753 if (! STRINGP (default_directory))
|
|
771
|
754 #ifdef WIN32_NATIVE
|
|
|
755 default_directory = build_string ("C:\\");
|
|
|
756 #else
|
|
428
|
757 default_directory = build_string ("/");
|
|
771
|
758 #endif
|
|
428
|
759
|
|
|
760 if (!NILP (default_directory))
|
|
|
761 {
|
|
|
762 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
763 if (!NILP (handler))
|
|
446
|
764 RETURN_UNGCPRO (call3 (handler, Qexpand_file_name,
|
|
|
765 name, default_directory));
|
|
428
|
766 }
|
|
|
767
|
|
|
768 o = XSTRING_DATA (default_directory);
|
|
|
769
|
|
|
770 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
|
771 It would be better to do this down below where we actually use
|
|
|
772 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
|
773 could invoke GC, and the strings might be relocated. This would
|
|
|
774 be annoying because we have pointers into strings lying around
|
|
|
775 that would need adjusting, and people would add new pointers to
|
|
|
776 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
777 Putting this call here avoids all that crud.
|
|
|
778
|
|
|
779 The EQ test avoids infinite recursion. */
|
|
|
780 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
|
781 /* Save time in some common cases - as long as default_directory
|
|
|
782 is not relative, it can be canonicalized with name below (if it
|
|
|
783 is needed at all) without requiring it to be expanded now. */
|
|
657
|
784 #ifdef WIN32_FILENAMES
|
|
442
|
785 /* Detect Windows file names with drive specifiers. */
|
|
428
|
786 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
787 /* Detect Windows file names in UNC format. */
|
|
|
788 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
657
|
789 #endif /* not WIN32_FILENAMES */
|
|
|
790 #ifndef WIN32_NATIVE
|
|
428
|
791 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
442
|
792 Windows). */
|
|
428
|
793 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
442
|
794 #endif /* not WIN32_NATIVE */
|
|
428
|
795 )
|
|
442
|
796
|
|
|
797 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
428
|
798
|
|
|
799 #ifdef FILE_SYSTEM_CASE
|
|
|
800 name = FILE_SYSTEM_CASE (name);
|
|
|
801 #endif
|
|
|
802
|
|
|
803 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
804 into name should be safe during all of this, though. */
|
|
|
805 nm = XSTRING_DATA (name);
|
|
|
806
|
|
657
|
807 #ifdef WIN32_FILENAMES
|
|
428
|
808 /* We will force directory separators to be either all \ or /, so make
|
|
|
809 a local copy to modify, even if there ends up being no change. */
|
|
771
|
810 nm = qxestrcpy (alloca_intbytes (qxestrlen (nm) + 1), nm);
|
|
|
811
|
|
|
812 /* Note if special escape prefix is present, but remove for now. */
|
|
|
813 if (nm[0] == '/' && nm[1] == ':')
|
|
|
814 {
|
|
|
815 is_escaped = 1;
|
|
|
816 nm += 2;
|
|
|
817 }
|
|
428
|
818
|
|
|
819 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
820 even if the rest of the name appears to be relative. */
|
|
|
821 {
|
|
771
|
822 Intbyte *colon = qxestrrchr (nm, ':');
|
|
428
|
823
|
|
|
824 if (colon)
|
|
657
|
825 {
|
|
428
|
826 /* Only recognize colon as part of drive specifier if there is a
|
|
|
827 single alphabetic character preceding the colon (and if the
|
|
|
828 character before the drive letter, if present, is a directory
|
|
|
829 separator); this is to support the remote system syntax used by
|
|
|
830 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
831 look_again:
|
|
|
832 if (nm == colon)
|
|
|
833 nm++;
|
|
|
834 else if (IS_DRIVE (colon[-1])
|
|
|
835 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
|
836 {
|
|
|
837 drive = colon[-1];
|
|
|
838 nm = colon + 1;
|
|
|
839 }
|
|
|
840 else
|
|
|
841 {
|
|
|
842 while (--colon >= nm)
|
|
|
843 if (colon[0] == ':')
|
|
|
844 goto look_again;
|
|
|
845 }
|
|
657
|
846 }
|
|
428
|
847 }
|
|
|
848
|
|
|
849 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
850 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
851 "//somedir". */
|
|
|
852 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
853 nm++;
|
|
657
|
854 #endif /* WIN32_FILENAMES */
|
|
428
|
855
|
|
771
|
856 #ifdef WIN32_FILENAMES
|
|
|
857 /* Discard any previous drive specifier if nm is now in UNC format. */
|
|
|
858 if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
859 {
|
|
|
860 drive = 0;
|
|
|
861 }
|
|
|
862 #endif
|
|
|
863
|
|
428
|
864 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
865 found, we can probably return right away. We will avoid allocating
|
|
|
866 a new string if name is already fully expanded. */
|
|
|
867 if (
|
|
|
868 IS_DIRECTORY_SEP (nm[0])
|
|
442
|
869 #ifdef WIN32_NATIVE
|
|
771
|
870 && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped
|
|
428
|
871 #endif
|
|
|
872 )
|
|
|
873 {
|
|
|
874 /* If it turns out that the filename we want to return is just a
|
|
|
875 suffix of FILENAME, we don't need to go through and edit
|
|
|
876 things; we just need to construct a new string using data
|
|
|
877 starting at the middle of FILENAME. If we set lose to a
|
|
|
878 non-zero value, that means we've discovered that we can't do
|
|
|
879 that cool trick. */
|
|
|
880 int lose = 0;
|
|
|
881
|
|
|
882 p = nm;
|
|
|
883 while (*p)
|
|
|
884 {
|
|
|
885 /* Since we know the name is absolute, we can assume that each
|
|
|
886 element starts with a "/". */
|
|
|
887
|
|
|
888 /* "." and ".." are hairy. */
|
|
|
889 if (IS_DIRECTORY_SEP (p[0])
|
|
|
890 && p[1] == '.'
|
|
|
891 && (IS_DIRECTORY_SEP (p[2])
|
|
|
892 || p[2] == 0
|
|
|
893 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
894 || p[3] == 0))))
|
|
|
895 lose = 1;
|
|
771
|
896 /* We want to replace multiple `/' in a row with a single
|
|
|
897 slash. */
|
|
|
898 else if (p > nm
|
|
|
899 && IS_DIRECTORY_SEP (p[0])
|
|
|
900 && IS_DIRECTORY_SEP (p[1]))
|
|
|
901 lose = 1;
|
|
428
|
902 p++;
|
|
|
903 }
|
|
|
904 if (!lose)
|
|
|
905 {
|
|
657
|
906 #ifdef WIN32_FILENAMES
|
|
|
907 if (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
428
|
908 {
|
|
771
|
909 Intbyte *newnm;
|
|
|
910
|
|
657
|
911 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
912 {
|
|
771
|
913 newnm = mswindows_canonicalize_filename (nm);
|
|
|
914 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
915 name = build_intstring (newnm);
|
|
657
|
916 }
|
|
771
|
917 else
|
|
657
|
918 {
|
|
771
|
919 /* drive must be set, so this is okay */
|
|
|
920 newnm = mswindows_canonicalize_filename (nm - 2);
|
|
|
921 if (qxestrcmp (newnm, XSTRING_DATA (name)) != 0)
|
|
|
922 {
|
|
|
923 name = build_intstring (newnm);
|
|
|
924 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
925 XSTRING_DATA (name)[1] = ':';
|
|
|
926 }
|
|
657
|
927 }
|
|
771
|
928 xfree (newnm);
|
|
657
|
929 RETURN_UNGCPRO (name);
|
|
428
|
930 }
|
|
771
|
931 #endif /* WIN32_FILENAMES */
|
|
657
|
932 #ifndef WIN32_NATIVE
|
|
428
|
933 if (nm == XSTRING_DATA (name))
|
|
442
|
934 RETURN_UNGCPRO (name);
|
|
771
|
935 RETURN_UNGCPRO (build_intstring (nm));
|
|
442
|
936 #endif /* not WIN32_NATIVE */
|
|
428
|
937 }
|
|
|
938 }
|
|
|
939
|
|
|
940 /* At this point, nm might or might not be an absolute file name. We
|
|
|
941 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
942 default_directory if nm is not absolute, and finally collapse /./
|
|
|
943 and /foo/../ sequences.
|
|
|
944
|
|
|
945 We set newdir to be the appropriate prefix if one is needed:
|
|
|
946 - the relevant user directory if nm starts with ~ or ~user
|
|
|
947 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
948 start with /
|
|
|
949 - the value of default_directory.
|
|
|
950
|
|
|
951 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
952 for the working dir of a drive). Therefore, to ensure we always
|
|
|
953 return an absolute name, if the final prefix is not absolute we
|
|
|
954 append it to the current working directory. */
|
|
|
955
|
|
|
956 newdir = 0;
|
|
|
957
|
|
|
958 if (nm[0] == '~') /* prefix ~ */
|
|
|
959 {
|
|
|
960 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
961 || nm[1] == 0) /* ~ by itself */
|
|
|
962 {
|
|
771
|
963 Intbyte *homedir = get_home_directory ();
|
|
|
964
|
|
|
965 if (!homedir)
|
|
665
|
966 newdir = (Intbyte *) "";
|
|
428
|
967 else
|
|
771
|
968 newdir = homedir;
|
|
428
|
969
|
|
|
970 nm++;
|
|
657
|
971 #ifdef WIN32_FILENAMES
|
|
428
|
972 collapse_newdir = 0;
|
|
|
973 #endif
|
|
|
974 }
|
|
|
975 else /* ~user/filename */
|
|
|
976 {
|
|
|
977 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
978 DO_NOTHING;
|
|
851
|
979 o = (Intbyte *) ALLOCA (p - nm + 1);
|
|
771
|
980 memcpy (o, nm, p - nm);
|
|
428
|
981 o [p - nm] = 0;
|
|
|
982
|
|
558
|
983 /* #### While NT is single-user (for the moment) you still
|
|
|
984 can have multiple user profiles users defined, each with
|
|
|
985 its HOME. So maybe possibly we should think about handling
|
|
|
986 ~user. --ben */
|
|
|
987 #ifndef WIN32_NATIVE
|
|
442
|
988 #ifdef CYGWIN
|
|
771
|
989 {
|
|
|
990 Intbyte *user;
|
|
|
991
|
|
|
992 if ((user = user_login_name (NULL)) != NULL)
|
|
|
993 {
|
|
|
994 /* Does the user login name match the ~name? */
|
|
|
995 if (qxestrcmp (user, o + 1) == 0)
|
|
|
996 {
|
|
|
997 newdir = get_home_directory ();
|
|
|
998 nm = p;
|
|
|
999 }
|
|
|
1000 }
|
|
|
1001 }
|
|
|
1002 if (!newdir)
|
|
428
|
1003 {
|
|
442
|
1004 #endif /* CYGWIN */
|
|
428
|
1005 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
1006 occurring in it. (It can call select()). */
|
|
|
1007 slow_down_interrupts ();
|
|
771
|
1008 pw = (struct passwd *) qxe_getpwnam (o + 1);
|
|
428
|
1009 speed_up_interrupts ();
|
|
|
1010 if (pw)
|
|
|
1011 {
|
|
771
|
1012 newdir = (Intbyte *) pw->pw_dir;
|
|
428
|
1013 nm = p;
|
|
771
|
1014 /* FSF: if WIN32_NATIVE, collapse_newdir = 0;
|
|
|
1015 not possible here. */
|
|
428
|
1016 }
|
|
442
|
1017 #ifdef CYGWIN
|
|
428
|
1018 }
|
|
|
1019 #endif
|
|
442
|
1020 #endif /* not WIN32_NATIVE */
|
|
428
|
1021
|
|
|
1022 /* If we don't find a user of that name, leave the name
|
|
|
1023 unchanged; don't move nm forward to p. */
|
|
|
1024 }
|
|
|
1025 }
|
|
|
1026
|
|
657
|
1027 #ifdef WIN32_FILENAMES
|
|
428
|
1028 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
1029 use the drive's current directory as the prefix if needed. */
|
|
|
1030 if (!newdir && drive)
|
|
|
1031 {
|
|
657
|
1032 #ifdef WIN32_NATIVE
|
|
428
|
1033 /* Get default directory if needed to make nm absolute. */
|
|
|
1034 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1035 {
|
|
771
|
1036 Intbyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
|
1037 if (newcwd)
|
|
|
1038 {
|
|
|
1039 INTBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
|
1040 xfree (newcwd);
|
|
|
1041 }
|
|
|
1042 else
|
|
428
|
1043 newdir = NULL;
|
|
|
1044 }
|
|
657
|
1045 #endif /* WIN32_NATIVE */
|
|
428
|
1046 if (!newdir)
|
|
|
1047 {
|
|
|
1048 /* Either nm starts with /, or drive isn't mounted. */
|
|
851
|
1049 newdir = (Intbyte *) ALLOCA (4);
|
|
428
|
1050 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1051 newdir[1] = ':';
|
|
|
1052 newdir[2] = '/';
|
|
|
1053 newdir[3] = 0;
|
|
|
1054 }
|
|
|
1055 }
|
|
657
|
1056 #endif /* WIN32_FILENAMES */
|
|
428
|
1057
|
|
|
1058 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1059 then it must be expanded relative to default_directory. */
|
|
|
1060
|
|
|
1061 if (1
|
|
442
|
1062 #ifndef WIN32_NATIVE
|
|
428
|
1063 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1064 && !IS_DIRECTORY_SEP (nm[0])
|
|
657
|
1065 #endif
|
|
|
1066 #ifdef WIN32_FILENAMES
|
|
428
|
1067 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1068 #endif
|
|
|
1069 && !newdir)
|
|
|
1070 {
|
|
|
1071 newdir = XSTRING_DATA (default_directory);
|
|
771
|
1072 #ifdef WIN32_FILENAMES
|
|
|
1073 /* Note if special escape prefix is present, but remove for now. */
|
|
|
1074 if (newdir[0] == '/' && newdir[1] == ':')
|
|
|
1075 {
|
|
|
1076 is_escaped = 1;
|
|
|
1077 newdir += 2;
|
|
|
1078 }
|
|
|
1079 #endif
|
|
428
|
1080 }
|
|
|
1081
|
|
657
|
1082 #ifdef WIN32_FILENAMES
|
|
428
|
1083 if (newdir)
|
|
|
1084 {
|
|
|
1085 /* First ensure newdir is an absolute name. */
|
|
|
1086 if (
|
|
442
|
1087 /* Detect Windows file names with drive specifiers. */
|
|
428
|
1088 ! (IS_DRIVE (newdir[0])
|
|
|
1089 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1090 /* Detect Windows file names in UNC format. */
|
|
|
1091 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
771
|
1092 /* XEmacs: added these two lines: Detect drive spec by itself */
|
|
428
|
1093 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
657
|
1094 /* Detect unix format. */
|
|
|
1095 #ifndef WIN32_NATIVE
|
|
|
1096 && ! (IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1097 #endif
|
|
428
|
1098 )
|
|
|
1099 {
|
|
|
1100 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1101 Because of the admonition against calling expand-file-name
|
|
|
1102 when we have pointers into lisp strings, we accomplish this
|
|
|
1103 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1104 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1105
|
|
|
1106 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1107 {
|
|
|
1108 drive = newdir[0];
|
|
|
1109 newdir += 2;
|
|
|
1110 }
|
|
|
1111 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1112 {
|
|
851
|
1113 Intbyte *tmp = (Intbyte *) ALLOCA (qxestrlen (newdir) +
|
|
771
|
1114 qxestrlen (nm) + 2);
|
|
|
1115 file_name_as_directory (tmp, newdir);
|
|
|
1116 qxestrcat (tmp, nm);
|
|
428
|
1117 nm = tmp;
|
|
|
1118 }
|
|
|
1119 if (drive)
|
|
|
1120 {
|
|
657
|
1121 #ifdef WIN32_NATIVE
|
|
771
|
1122 Intbyte *newcwd = mswindows_getdcwd (toupper (drive) - 'A' + 1);
|
|
|
1123 if (newcwd)
|
|
|
1124 {
|
|
|
1125 INTBYTE_STRING_TO_ALLOCA (newcwd, newdir);
|
|
|
1126 xfree (newcwd);
|
|
|
1127 }
|
|
|
1128 else
|
|
657
|
1129 #endif
|
|
771
|
1130 INTBYTE_STRING_TO_ALLOCA ((Intbyte *) "/", newdir);
|
|
428
|
1131 }
|
|
|
1132 else
|
|
771
|
1133 INTBYTE_STRING_TO_ALLOCA (get_initial_directory (0, 0), newdir);
|
|
428
|
1134 }
|
|
|
1135
|
|
|
1136 /* Strip off drive name from prefix, if present. */
|
|
|
1137 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1138 {
|
|
|
1139 drive = newdir[0];
|
|
|
1140 newdir += 2;
|
|
|
1141 }
|
|
|
1142
|
|
|
1143 /* Keep only a prefix from newdir if nm starts with slash
|
|
771
|
1144 (//server/share for UNC, nothing otherwise). */
|
|
657
|
1145 if (IS_DIRECTORY_SEP (nm[0])
|
|
|
1146 #ifndef WIN32_NATIVE
|
|
|
1147 && IS_DIRECTORY_SEP (nm[1])
|
|
|
1148 #endif
|
|
|
1149 && collapse_newdir)
|
|
428
|
1150 {
|
|
|
1151 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1152 {
|
|
664
|
1153 newdir =
|
|
665
|
1154 (Intbyte *)
|
|
851
|
1155 qxestrcpy ((Intbyte *) ALLOCA (qxestrlen (newdir) + 1),
|
|
771
|
1156 newdir);
|
|
428
|
1157 p = newdir + 2;
|
|
|
1158 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1159 p++;
|
|
|
1160 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1161 *p = 0;
|
|
|
1162 }
|
|
|
1163 else
|
|
665
|
1164 newdir = (Intbyte *) "";
|
|
428
|
1165 }
|
|
|
1166 }
|
|
657
|
1167 #endif /* WIN32_FILENAMES */
|
|
428
|
1168
|
|
|
1169 if (newdir)
|
|
|
1170 {
|
|
|
1171 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
771
|
1172 just / or // (an incomplete UNC name). */
|
|
|
1173 length = qxestrlen (newdir);
|
|
428
|
1174 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
657
|
1175 #ifdef WIN32_FILENAMES
|
|
428
|
1176 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1177 #endif
|
|
|
1178 )
|
|
|
1179 {
|
|
851
|
1180 Intbyte *temp = (Intbyte *) ALLOCA (length);
|
|
428
|
1181 memcpy (temp, newdir, length - 1);
|
|
|
1182 temp[length - 1] = 0;
|
|
|
1183 newdir = temp;
|
|
|
1184 }
|
|
|
1185 tlen = length + 1;
|
|
|
1186 }
|
|
|
1187 else
|
|
|
1188 tlen = 0;
|
|
|
1189
|
|
|
1190 /* Now concatenate the directory and name to new space in the stack frame */
|
|
771
|
1191 tlen += qxestrlen (nm) + 1;
|
|
657
|
1192 #ifdef WIN32_FILENAMES
|
|
771
|
1193 /* Reserve space for drive specifier and escape prefix, since either
|
|
|
1194 or both may need to be inserted. (The Microsoft x86 compiler
|
|
428
|
1195 produces incorrect code if the following two lines are combined.) */
|
|
851
|
1196 target = (Intbyte *) ALLOCA (tlen + 4);
|
|
771
|
1197 target += 4;
|
|
657
|
1198 #else /* not WIN32_FILENAMES */
|
|
851
|
1199 target = (Intbyte *) ALLOCA (tlen);
|
|
657
|
1200 #endif /* not WIN32_FILENAMES */
|
|
428
|
1201 *target = 0;
|
|
|
1202
|
|
|
1203 if (newdir)
|
|
|
1204 {
|
|
|
1205 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
771
|
1206 {
|
|
|
1207 #ifdef WIN32_FILENAMES
|
|
|
1208 /* If newdir is effectively "C:/", then the drive letter will have
|
|
|
1209 been stripped and newdir will be "/". Concatenating with an
|
|
|
1210 absolute directory in nm produces "//", which will then be
|
|
|
1211 incorrectly treated as a network share. Ignore newdir in
|
|
|
1212 this case (keeping the drive letter). */
|
|
|
1213 if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0])
|
|
|
1214 && newdir[1] == '\0'))
|
|
|
1215 #endif
|
|
|
1216 qxestrcpy (target, newdir);
|
|
|
1217 }
|
|
428
|
1218 else
|
|
771
|
1219 file_name_as_directory (target, newdir);
|
|
428
|
1220 }
|
|
|
1221
|
|
771
|
1222 qxestrcat (target, nm);
|
|
428
|
1223
|
|
|
1224 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
|
1225
|
|
771
|
1226 /* Now canonicalize by removing `//', `/.' and `/foo/..' if they
|
|
|
1227 appear. */
|
|
428
|
1228
|
|
|
1229 p = target;
|
|
|
1230 o = target;
|
|
|
1231
|
|
|
1232 while (*p)
|
|
|
1233 {
|
|
|
1234 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1235 {
|
|
|
1236 *o++ = *p++;
|
|
|
1237 }
|
|
|
1238 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1239 && p[1] == '.'
|
|
|
1240 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1241 || p[2] == 0))
|
|
|
1242 {
|
|
|
1243 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1244 just delete the whole "/.". */
|
|
|
1245 if (o == target && p[2] == '\0')
|
|
|
1246 *o++ = *p;
|
|
|
1247 p += 2;
|
|
|
1248 }
|
|
|
1249 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1250 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1251 && o != target
|
|
|
1252 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1253 {
|
|
|
1254 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1255 ;
|
|
|
1256 /* Keep initial / only if this is the whole name. */
|
|
|
1257 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
|
1258 ++o;
|
|
|
1259 p += 3;
|
|
|
1260 }
|
|
771
|
1261 else if (p > target
|
|
|
1262 && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1263 {
|
|
|
1264 /* Collapse multiple `/' in a row. */
|
|
|
1265 *o++ = *p++;
|
|
|
1266 while (IS_DIRECTORY_SEP (*p))
|
|
|
1267 ++p;
|
|
|
1268 }
|
|
428
|
1269 else
|
|
|
1270 {
|
|
|
1271 *o++ = *p++;
|
|
|
1272 }
|
|
|
1273 }
|
|
|
1274
|
|
657
|
1275 #ifdef WIN32_FILENAMES
|
|
428
|
1276 /* At last, set drive name, except for network file name. */
|
|
|
1277 if (drive)
|
|
|
1278 {
|
|
|
1279 target -= 2;
|
|
|
1280 target[0] = DRIVE_LETTER (drive);
|
|
|
1281 target[1] = ':';
|
|
|
1282 }
|
|
657
|
1283 #ifdef WIN32_NATIVE
|
|
428
|
1284 else
|
|
|
1285 {
|
|
|
1286 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
|
1287 }
|
|
657
|
1288 #endif
|
|
771
|
1289 /* Reinsert the escape prefix if required. */
|
|
|
1290 if (is_escaped)
|
|
|
1291 {
|
|
|
1292 target -= 2;
|
|
|
1293 target[0] = '/';
|
|
|
1294 target[1] = ':';
|
|
|
1295 }
|
|
|
1296
|
|
|
1297 *o = '\0';
|
|
|
1298
|
|
|
1299 {
|
|
|
1300 Intbyte *newtarget = mswindows_canonicalize_filename (target);
|
|
|
1301 Lisp_Object result = build_intstring (newtarget);
|
|
|
1302 xfree (newtarget);
|
|
|
1303
|
|
|
1304 RETURN_UNGCPRO (result);
|
|
|
1305 }
|
|
|
1306 #else /* not WIN32_FILENAMES */
|
|
442
|
1307 RETURN_UNGCPRO (make_string (target, o - target));
|
|
771
|
1308 #endif /* not WIN32_FILENAMES */
|
|
428
|
1309 }
|
|
|
1310
|
|
|
1311 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
444
|
1312 Return the canonical name of FILENAME.
|
|
|
1313 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
428
|
1314 (does not start with slash); if DEFAULT is nil or missing,
|
|
444
|
1315 the current buffer's value of `default-directory' is used.
|
|
428
|
1316 No component of the resulting pathname will be a symbolic link, as
|
|
|
1317 in the realpath() function.
|
|
|
1318 */
|
|
|
1319 (filename, default_))
|
|
|
1320 {
|
|
442
|
1321 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1322 Lisp_Object expanded_name;
|
|
|
1323 struct gcpro gcpro1;
|
|
|
1324
|
|
|
1325 CHECK_STRING (filename);
|
|
|
1326
|
|
|
1327 expanded_name = Fexpand_file_name (filename, default_);
|
|
|
1328
|
|
|
1329 if (!STRINGP (expanded_name))
|
|
|
1330 return Qnil;
|
|
|
1331
|
|
|
1332 GCPRO1 (expanded_name);
|
|
442
|
1333
|
|
|
1334 {
|
|
|
1335 Lisp_Object handler =
|
|
|
1336 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1337
|
|
|
1338 if (!NILP (handler))
|
|
|
1339 RETURN_UNGCPRO
|
|
|
1340 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1341 }
|
|
428
|
1342
|
|
|
1343 {
|
|
771
|
1344 Intbyte resolved_path[PATH_MAX];
|
|
|
1345 Bytecount elen = XSTRING_LENGTH (expanded_name);
|
|
|
1346 Intbyte *path;
|
|
|
1347 Intbyte *p;
|
|
|
1348
|
|
|
1349 LISP_STRING_TO_ALLOCA (expanded_name, path);
|
|
428
|
1350 p = path;
|
|
442
|
1351
|
|
428
|
1352 /* Try doing it all at once. */
|
|
771
|
1353 if (!qxe_realpath (path, resolved_path))
|
|
428
|
1354 {
|
|
|
1355 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1356 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1357 It claims to return a useful value in the "error" case, but since
|
|
|
1358 there is no indication provided of how far along the pathname
|
|
|
1359 the function went before erring, there is no way to use the
|
|
442
|
1360 partial result returned. What a piece of junk.
|
|
|
1361
|
|
|
1362 The above comment refers to historical versions of
|
|
|
1363 realpath(). The Unix98 specs state:
|
|
|
1364
|
|
|
1365 "On successful completion, realpath() returns a
|
|
|
1366 pointer to the resolved name. Otherwise, realpath()
|
|
|
1367 returns a null pointer and sets errno to indicate the
|
|
|
1368 error, and the contents of the buffer pointed to by
|
|
|
1369 resolved_name are undefined."
|
|
|
1370
|
|
771
|
1371 Since we depend on undocumented semantics of various system
|
|
|
1372 realpath()s, we just use our own version in realpath.c. */
|
|
428
|
1373 for (;;)
|
|
|
1374 {
|
|
771
|
1375 Intbyte *pos;
|
|
446
|
1376
|
|
657
|
1377 #ifdef WIN32_FILENAMES
|
|
446
|
1378 if (IS_DRIVE (p[0]) && IS_DEVICE_SEP (p[1])
|
|
|
1379 && IS_DIRECTORY_SEP (p[2]))
|
|
|
1380 /* don't test c: on windows */
|
|
|
1381 p = p+2;
|
|
|
1382 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1383 /* start after // */
|
|
|
1384 p = p+1;
|
|
|
1385 #endif
|
|
|
1386 for (pos = p + 1; pos < path + elen; pos++)
|
|
|
1387 if (IS_DIRECTORY_SEP (*pos))
|
|
|
1388 {
|
|
|
1389 *(p = pos) = 0;
|
|
|
1390 break;
|
|
|
1391 }
|
|
|
1392 if (p != pos)
|
|
|
1393 p = 0;
|
|
428
|
1394
|
|
771
|
1395 if (qxe_realpath (path, resolved_path))
|
|
428
|
1396 {
|
|
|
1397 if (p)
|
|
446
|
1398 *p = DIRECTORY_SEP;
|
|
428
|
1399 else
|
|
|
1400 break;
|
|
|
1401
|
|
|
1402 }
|
|
|
1403 else if (errno == ENOENT || errno == EACCES)
|
|
|
1404 {
|
|
|
1405 /* Failed on this component. Just tack on the rest of
|
|
|
1406 the string and we are done. */
|
|
771
|
1407 int rlen = qxestrlen (resolved_path);
|
|
428
|
1408
|
|
|
1409 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1410 the error, and places in resolved_path the absolute pathname
|
|
|
1411 of the path component which could not be resolved." */
|
|
442
|
1412
|
|
|
1413 if (p)
|
|
428
|
1414 {
|
|
|
1415 int plen = elen - (p - path);
|
|
|
1416
|
|
446
|
1417 if (rlen > 1 && IS_DIRECTORY_SEP (resolved_path[rlen - 1]))
|
|
428
|
1418 rlen = rlen - 1;
|
|
|
1419
|
|
|
1420 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1421 goto toolong;
|
|
|
1422
|
|
446
|
1423 resolved_path[rlen] = DIRECTORY_SEP;
|
|
428
|
1424 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1425 }
|
|
|
1426 break;
|
|
|
1427 }
|
|
|
1428 else
|
|
|
1429 goto lose;
|
|
|
1430 }
|
|
|
1431 }
|
|
|
1432
|
|
|
1433 {
|
|
442
|
1434 Lisp_Object resolved_name;
|
|
771
|
1435 int rlen = qxestrlen (resolved_path);
|
|
826
|
1436 if (elen > 0 && IS_DIRECTORY_SEP (string_byte (expanded_name, elen - 1))
|
|
446
|
1437 && !(rlen > 0 && IS_DIRECTORY_SEP (resolved_path[rlen - 1])))
|
|
428
|
1438 {
|
|
|
1439 if (rlen + 1 > countof (resolved_path))
|
|
|
1440 goto toolong;
|
|
446
|
1441 resolved_path[rlen++] = DIRECTORY_SEP;
|
|
442
|
1442 resolved_path[rlen] = '\0';
|
|
428
|
1443 }
|
|
771
|
1444 resolved_name = make_string (resolved_path, rlen);
|
|
442
|
1445 RETURN_UNGCPRO (resolved_name);
|
|
428
|
1446 }
|
|
|
1447
|
|
|
1448 toolong:
|
|
|
1449 errno = ENAMETOOLONG;
|
|
|
1450 goto lose;
|
|
|
1451 lose:
|
|
563
|
1452 report_file_error ("Finding truename", expanded_name);
|
|
428
|
1453 }
|
|
442
|
1454 RETURN_UNGCPRO (Qnil);
|
|
428
|
1455 }
|
|
|
1456
|
|
|
1457
|
|
|
1458 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
|
1459 Substitute environment variables referred to in FILENAME.
|
|
|
1460 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1461 the value of that variable. The variable name should be terminated
|
|
444
|
1462 with a character, not a letter, digit or underscore; otherwise, enclose
|
|
428
|
1463 the entire variable name in braces.
|
|
|
1464 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1465 */
|
|
444
|
1466 (filename))
|
|
428
|
1467 {
|
|
442
|
1468 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
665
|
1469 Intbyte *nm;
|
|
|
1470
|
|
|
1471 Intbyte *s, *p, *o, *x, *endp;
|
|
|
1472 Intbyte *target = 0;
|
|
428
|
1473 int total = 0;
|
|
|
1474 int substituted = 0;
|
|
665
|
1475 Intbyte *xnm;
|
|
428
|
1476 Lisp_Object handler;
|
|
|
1477
|
|
444
|
1478 CHECK_STRING (filename);
|
|
428
|
1479
|
|
|
1480 /* If the file name has special constructs in it,
|
|
|
1481 call the corresponding file handler. */
|
|
444
|
1482 handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name);
|
|
428
|
1483 if (!NILP (handler))
|
|
|
1484 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
444
|
1485 filename);
|
|
|
1486
|
|
|
1487 nm = XSTRING_DATA (filename);
|
|
|
1488 endp = nm + XSTRING_LENGTH (filename);
|
|
428
|
1489
|
|
|
1490 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1491
|
|
|
1492 for (p = nm; p != endp; p++)
|
|
|
1493 {
|
|
|
1494 if ((p[0] == '~'
|
|
657
|
1495 #if defined (WIN32_FILENAMES)
|
|
440
|
1496 /* // at start of file name is meaningful in WindowsNT systems */
|
|
428
|
1497 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
657
|
1498 #else /* not (WIN32_FILENAMES) */
|
|
428
|
1499 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1500 #endif /* not (WIN32_FILENAMES) */
|
|
428
|
1501 )
|
|
|
1502 && p != nm
|
|
|
1503 && (IS_DIRECTORY_SEP (p[-1])))
|
|
|
1504 {
|
|
|
1505 nm = p;
|
|
|
1506 substituted = 1;
|
|
|
1507 }
|
|
657
|
1508 #ifdef WIN32_FILENAMES
|
|
428
|
1509 /* see comment in expand-file-name about drive specifiers */
|
|
|
1510 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1511 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1512 {
|
|
|
1513 nm = p;
|
|
|
1514 substituted = 1;
|
|
|
1515 }
|
|
657
|
1516 #endif /* WIN32_FILENAMES */
|
|
428
|
1517 }
|
|
|
1518
|
|
|
1519 /* See if any variables are substituted into the string
|
|
|
1520 and find the total length of their values in `total' */
|
|
|
1521
|
|
|
1522 for (p = nm; p != endp;)
|
|
|
1523 if (*p != '$')
|
|
|
1524 p++;
|
|
|
1525 else
|
|
|
1526 {
|
|
|
1527 p++;
|
|
|
1528 if (p == endp)
|
|
|
1529 goto badsubst;
|
|
|
1530 else if (*p == '$')
|
|
|
1531 {
|
|
|
1532 /* "$$" means a single "$" */
|
|
|
1533 p++;
|
|
|
1534 total -= 1;
|
|
|
1535 substituted = 1;
|
|
|
1536 continue;
|
|
|
1537 }
|
|
|
1538 else if (*p == '{')
|
|
|
1539 {
|
|
|
1540 o = ++p;
|
|
|
1541 while (p != endp && *p != '}') p++;
|
|
|
1542 if (*p != '}') goto missingclose;
|
|
|
1543 s = p;
|
|
|
1544 }
|
|
|
1545 else
|
|
|
1546 {
|
|
|
1547 o = p;
|
|
|
1548 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1549 s = p;
|
|
|
1550 }
|
|
|
1551
|
|
|
1552 /* Copy out the variable name */
|
|
851
|
1553 target = (Intbyte *) ALLOCA (s - o + 1);
|
|
771
|
1554 qxestrncpy (target, o, s - o);
|
|
428
|
1555 target[s - o] = 0;
|
|
442
|
1556 #ifdef WIN32_NATIVE
|
|
428
|
1557 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1558 #endif /* WIN32_NATIVE */
|
|
428
|
1559
|
|
|
1560 /* Get variable value */
|
|
771
|
1561 o = egetenv ((CIntbyte *) target);
|
|
428
|
1562 if (!o) goto badvar;
|
|
771
|
1563 total += qxestrlen (o);
|
|
428
|
1564 substituted = 1;
|
|
|
1565 }
|
|
|
1566
|
|
|
1567 if (!substituted)
|
|
444
|
1568 return filename;
|
|
|
1569
|
|
|
1570 /* If substitution required, recopy the filename and do it */
|
|
428
|
1571 /* Make space in stack frame for the new copy */
|
|
851
|
1572 xnm = (Intbyte *) ALLOCA (XSTRING_LENGTH (filename) + total + 1);
|
|
428
|
1573 x = xnm;
|
|
|
1574
|
|
|
1575 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1576 for (p = nm; *p;)
|
|
|
1577 if (*p != '$')
|
|
|
1578 *x++ = *p++;
|
|
|
1579 else
|
|
|
1580 {
|
|
|
1581 p++;
|
|
|
1582 if (p == endp)
|
|
|
1583 goto badsubst;
|
|
|
1584 else if (*p == '$')
|
|
|
1585 {
|
|
|
1586 *x++ = *p++;
|
|
|
1587 continue;
|
|
|
1588 }
|
|
|
1589 else if (*p == '{')
|
|
|
1590 {
|
|
|
1591 o = ++p;
|
|
|
1592 while (p != endp && *p != '}') p++;
|
|
|
1593 if (*p != '}') goto missingclose;
|
|
|
1594 s = p++;
|
|
|
1595 }
|
|
|
1596 else
|
|
|
1597 {
|
|
|
1598 o = p;
|
|
|
1599 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1600 s = p;
|
|
|
1601 }
|
|
|
1602
|
|
|
1603 /* Copy out the variable name */
|
|
851
|
1604 target = (Intbyte *) ALLOCA (s - o + 1);
|
|
771
|
1605 qxestrncpy (target, o, s - o);
|
|
428
|
1606 target[s - o] = 0;
|
|
442
|
1607 #ifdef WIN32_NATIVE
|
|
428
|
1608 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1609 #endif /* WIN32_NATIVE */
|
|
428
|
1610
|
|
|
1611 /* Get variable value */
|
|
771
|
1612 o = egetenv ((CIntbyte *) target);
|
|
428
|
1613 if (!o)
|
|
|
1614 goto badvar;
|
|
|
1615
|
|
771
|
1616 qxestrcpy (x, o);
|
|
|
1617 x += qxestrlen (o);
|
|
428
|
1618 }
|
|
|
1619
|
|
|
1620 *x = 0;
|
|
|
1621
|
|
|
1622 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1623
|
|
|
1624 for (p = xnm; p != x; p++)
|
|
|
1625 if ((p[0] == '~'
|
|
657
|
1626 #if defined (WIN32_FILENAMES)
|
|
428
|
1627 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
657
|
1628 #else /* not WIN32_FILENAMES */
|
|
428
|
1629 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1630 #endif /* not WIN32_FILENAMES */
|
|
428
|
1631 )
|
|
|
1632 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1633 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1634 xnm = p;
|
|
657
|
1635 #ifdef WIN32_FILENAMES
|
|
428
|
1636 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1637 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1638 xnm = p;
|
|
|
1639 #endif
|
|
|
1640
|
|
|
1641 return make_string (xnm, x - xnm);
|
|
|
1642
|
|
|
1643 badsubst:
|
|
444
|
1644 syntax_error ("Bad format environment-variable substitution", filename);
|
|
428
|
1645 missingclose:
|
|
442
|
1646 syntax_error ("Missing \"}\" in environment-variable substitution",
|
|
444
|
1647 filename);
|
|
428
|
1648 badvar:
|
|
442
|
1649 syntax_error_2 ("Substituting nonexistent environment variable",
|
|
771
|
1650 filename, build_intstring (target));
|
|
428
|
1651
|
|
801
|
1652 RETURN_NOT_REACHED (Qnil)
|
|
428
|
1653 }
|
|
|
1654
|
|
|
1655 /* A slightly faster and more convenient way to get
|
|
|
1656 (directory-file-name (expand-file-name FOO)). */
|
|
|
1657
|
|
|
1658 Lisp_Object
|
|
|
1659 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1660 {
|
|
442
|
1661 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1662 Lisp_Object abspath;
|
|
|
1663 struct gcpro gcpro1;
|
|
|
1664
|
|
|
1665 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1666 GCPRO1 (abspath);
|
|
|
1667 /* Remove final slash, if any (unless path is root).
|
|
|
1668 stat behaves differently depending! */
|
|
|
1669 if (XSTRING_LENGTH (abspath) > 1
|
|
826
|
1670 && IS_DIRECTORY_SEP (string_byte (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1671 && !IS_DEVICE_SEP (string_byte (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
428
|
1672 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1673 abspath = Fdirectory_file_name (abspath);
|
|
|
1674 UNGCPRO;
|
|
|
1675 return abspath;
|
|
|
1676 }
|
|
|
1677
|
|
|
1678 /* Signal an error if the file ABSNAME already exists.
|
|
|
1679 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1680 and bypass the error if the user says to go ahead.
|
|
|
1681 QUERYSTRING is a name for the action that is being considered
|
|
|
1682 to alter the file.
|
|
|
1683 *STATPTR is used to store the stat information if the file exists.
|
|
|
1684 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1685
|
|
|
1686 static void
|
|
442
|
1687 barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring,
|
|
428
|
1688 int interactive, struct stat *statptr)
|
|
|
1689 {
|
|
442
|
1690 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1691 struct stat statbuf;
|
|
|
1692
|
|
|
1693 /* stat is a good way to tell whether the file exists,
|
|
|
1694 regardless of what access permissions it has. */
|
|
771
|
1695 if (qxe_stat (XSTRING_DATA (absname), &statbuf) >= 0)
|
|
428
|
1696 {
|
|
|
1697 Lisp_Object tem;
|
|
|
1698
|
|
|
1699 if (interactive)
|
|
|
1700 {
|
|
|
1701 Lisp_Object prompt;
|
|
|
1702 struct gcpro gcpro1;
|
|
|
1703
|
|
771
|
1704 prompt =
|
|
|
1705 emacs_sprintf_string
|
|
|
1706 (CGETTEXT ("File %s already exists; %s anyway? "),
|
|
|
1707 XSTRING_DATA (absname), CGETTEXT (querystring));
|
|
428
|
1708
|
|
|
1709 GCPRO1 (prompt);
|
|
|
1710 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1711 UNGCPRO;
|
|
|
1712 }
|
|
|
1713 else
|
|
|
1714 tem = Qnil;
|
|
|
1715
|
|
|
1716 if (NILP (tem))
|
|
|
1717 Fsignal (Qfile_already_exists,
|
|
771
|
1718 list2 (build_msg_string ("File already exists"),
|
|
428
|
1719 absname));
|
|
|
1720 if (statptr)
|
|
|
1721 *statptr = statbuf;
|
|
|
1722 }
|
|
|
1723 else
|
|
|
1724 {
|
|
|
1725 if (statptr)
|
|
|
1726 statptr->st_mode = 0;
|
|
|
1727 }
|
|
|
1728 return;
|
|
|
1729 }
|
|
|
1730
|
|
|
1731 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1732 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
444
|
1733 Copy FILENAME to NEWNAME. Both args must be strings.
|
|
428
|
1734 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1735 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1736 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1737 This is what happens in interactive use with M-x.
|
|
|
1738 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1739 last-modified time as the old one. (This works on only some systems.)
|
|
|
1740 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1741 */
|
|
|
1742 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1743 {
|
|
442
|
1744 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1745 int ifd, ofd, n;
|
|
|
1746 char buf[16 * 1024];
|
|
|
1747 struct stat st, out_st;
|
|
|
1748 Lisp_Object handler;
|
|
|
1749 int speccount = specpdl_depth ();
|
|
|
1750 struct gcpro gcpro1, gcpro2;
|
|
|
1751 /* Lisp_Object args[6]; */
|
|
|
1752 int input_file_statable_p;
|
|
|
1753
|
|
|
1754 GCPRO2 (filename, newname);
|
|
|
1755 CHECK_STRING (filename);
|
|
|
1756 CHECK_STRING (newname);
|
|
|
1757 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1758 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1759
|
|
|
1760 /* If the input file name has special constructs in it,
|
|
|
1761 call the corresponding file handler. */
|
|
|
1762 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1763 /* Likewise for output file name. */
|
|
|
1764 if (NILP (handler))
|
|
|
1765 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1766 if (!NILP (handler))
|
|
|
1767 {
|
|
|
1768 UNGCPRO;
|
|
|
1769 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1770 ok_if_already_exists, keep_time);
|
|
|
1771 }
|
|
|
1772
|
|
|
1773 /* When second argument is a directory, copy the file into it.
|
|
|
1774 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1775 */
|
|
|
1776 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1777 {
|
|
|
1778 Lisp_Object args[3];
|
|
|
1779 struct gcpro ngcpro1;
|
|
|
1780 int i = 1;
|
|
|
1781
|
|
|
1782 args[0] = newname;
|
|
|
1783 args[1] = Qnil; args[2] = Qnil;
|
|
|
1784 NGCPRO1 (*args);
|
|
|
1785 ngcpro1.nvars = 3;
|
|
826
|
1786 if (!IS_DIRECTORY_SEP (string_byte (newname,
|
|
442
|
1787 XSTRING_LENGTH (newname) - 1)))
|
|
|
1788
|
|
|
1789 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1790 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1791 newname = Fconcat (i, args);
|
|
|
1792 NUNGCPRO;
|
|
|
1793 }
|
|
|
1794
|
|
|
1795 if (NILP (ok_if_already_exists)
|
|
|
1796 || INTP (ok_if_already_exists))
|
|
|
1797 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1798 INTP (ok_if_already_exists), &out_st);
|
|
771
|
1799 else if (qxe_stat (XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1800 out_st.st_mode = 0;
|
|
|
1801
|
|
771
|
1802 ifd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
1803 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
1804 if (ifd < 0)
|
|
563
|
1805 report_file_error ("Opening input file", filename);
|
|
428
|
1806
|
|
|
1807 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1808
|
|
|
1809 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1810 copyable by us. */
|
|
771
|
1811 input_file_statable_p = (qxe_fstat (ifd, &st) >= 0);
|
|
428
|
1812
|
|
442
|
1813 #ifndef WIN32_NATIVE
|
|
428
|
1814 if (out_st.st_mode != 0
|
|
|
1815 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1816 {
|
|
|
1817 errno = 0;
|
|
|
1818 report_file_error ("Input and output files are the same",
|
|
563
|
1819 list3 (Qunbound, filename, newname));
|
|
428
|
1820 }
|
|
|
1821 #endif
|
|
|
1822
|
|
|
1823 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1824 if (input_file_statable_p)
|
|
|
1825 {
|
|
|
1826 if (!(S_ISREG (st.st_mode))
|
|
|
1827 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1828 #ifdef S_ISCHR
|
|
|
1829 && !(S_ISCHR (st.st_mode))
|
|
|
1830 #endif
|
|
|
1831 && !(S_ISLNK (st.st_mode)))
|
|
|
1832 {
|
|
|
1833 #if defined (EISDIR)
|
|
|
1834 /* Get a better looking error message. */
|
|
|
1835 errno = EISDIR;
|
|
|
1836 #endif /* EISDIR */
|
|
563
|
1837 report_file_error ("Non-regular file", filename);
|
|
428
|
1838 }
|
|
|
1839 }
|
|
|
1840 #endif /* S_ISREG && S_ISLNK */
|
|
|
1841
|
|
771
|
1842 ofd = qxe_open (XSTRING_DATA (newname),
|
|
|
1843 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
428
|
1844 if (ofd < 0)
|
|
563
|
1845 report_file_error ("Opening output file", newname);
|
|
428
|
1846
|
|
|
1847 {
|
|
|
1848 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1849
|
|
|
1850 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1851
|
|
|
1852 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1853 {
|
|
|
1854 if (write_allowing_quit (ofd, buf, n) != n)
|
|
563
|
1855 report_file_error ("I/O error", newname);
|
|
428
|
1856 }
|
|
|
1857
|
|
|
1858 /* Closing the output clobbers the file times on some systems. */
|
|
771
|
1859 if (retry_close (ofd) < 0)
|
|
563
|
1860 report_file_error ("I/O error", newname);
|
|
428
|
1861
|
|
|
1862 if (input_file_statable_p)
|
|
|
1863 {
|
|
442
|
1864 if (!NILP (keep_time))
|
|
|
1865 {
|
|
|
1866 EMACS_TIME atime, mtime;
|
|
|
1867 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1868 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
592
|
1869 if (set_file_times (newname, atime, mtime))
|
|
|
1870 report_file_error ("I/O error", list1 (newname));
|
|
442
|
1871 }
|
|
771
|
1872 qxe_chmod (XSTRING_DATA (newname), st.st_mode & 07777);
|
|
428
|
1873 }
|
|
|
1874
|
|
|
1875 /* We'll close it by hand */
|
|
|
1876 XCAR (ofd_locative) = Qnil;
|
|
|
1877
|
|
|
1878 /* Close ifd */
|
|
771
|
1879 unbind_to (speccount);
|
|
428
|
1880 }
|
|
|
1881
|
|
|
1882 UNGCPRO;
|
|
|
1883 return Qnil;
|
|
|
1884 }
|
|
|
1885
|
|
|
1886 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1887 Create a directory. One argument, a file name string.
|
|
|
1888 */
|
|
|
1889 (dirname_))
|
|
|
1890 {
|
|
|
1891 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1892 Lisp_Object handler;
|
|
|
1893 struct gcpro gcpro1;
|
|
771
|
1894 DECLARE_EISTRING (dir);
|
|
428
|
1895
|
|
|
1896 CHECK_STRING (dirname_);
|
|
|
1897 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1898
|
|
|
1899 GCPRO1 (dirname_);
|
|
|
1900 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1901 UNGCPRO;
|
|
|
1902 if (!NILP (handler))
|
|
|
1903 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1904
|
|
771
|
1905 eicpy_lstr (dir, dirname_);
|
|
|
1906 if (eigetch_char (dir, eicharlen (dir) - 1) == '/')
|
|
|
1907 eidel (dir, eilen (dir) - 1, -1, 1, -1);
|
|
|
1908
|
|
|
1909 if (qxe_mkdir (eidata (dir), 0777) != 0)
|
|
563
|
1910 report_file_error ("Creating directory", dirname_);
|
|
428
|
1911
|
|
|
1912 return Qnil;
|
|
|
1913 }
|
|
|
1914
|
|
|
1915 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1916 Delete a directory. One argument, a file name or directory name string.
|
|
|
1917 */
|
|
|
1918 (dirname_))
|
|
|
1919 {
|
|
|
1920 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1921 Lisp_Object handler;
|
|
|
1922 struct gcpro gcpro1;
|
|
|
1923
|
|
|
1924 CHECK_STRING (dirname_);
|
|
|
1925
|
|
|
1926 GCPRO1 (dirname_);
|
|
|
1927 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1928 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1929
|
|
|
1930 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1931 UNGCPRO;
|
|
|
1932 if (!NILP (handler))
|
|
|
1933 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1934
|
|
771
|
1935 if (qxe_rmdir (XSTRING_DATA (dirname_)) != 0)
|
|
563
|
1936 report_file_error ("Removing directory", dirname_);
|
|
428
|
1937
|
|
|
1938 return Qnil;
|
|
|
1939 }
|
|
|
1940
|
|
|
1941 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1942 Delete the file named FILENAME (a string).
|
|
|
1943 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1944 */
|
|
|
1945 (filename))
|
|
|
1946 {
|
|
|
1947 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1948 Lisp_Object handler;
|
|
|
1949 struct gcpro gcpro1;
|
|
|
1950
|
|
|
1951 CHECK_STRING (filename);
|
|
|
1952 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1953
|
|
|
1954 GCPRO1 (filename);
|
|
|
1955 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1956 UNGCPRO;
|
|
|
1957 if (!NILP (handler))
|
|
|
1958 return call2 (handler, Qdelete_file, filename);
|
|
|
1959
|
|
771
|
1960 if (0 > qxe_unlink (XSTRING_DATA (filename)))
|
|
563
|
1961 report_file_error ("Removing old name", filename);
|
|
428
|
1962 return Qnil;
|
|
|
1963 }
|
|
|
1964
|
|
|
1965 static Lisp_Object
|
|
|
1966 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1967 {
|
|
|
1968 return Qt;
|
|
|
1969 }
|
|
|
1970
|
|
|
1971 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1972
|
|
|
1973 int
|
|
|
1974 internal_delete_file (Lisp_Object filename)
|
|
|
1975 {
|
|
|
1976 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1977 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1978 internal_delete_file_1, Qnil));
|
|
|
1979 }
|
|
|
1980
|
|
|
1981 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1982 "fRename file: \nFRename %s to file: \np", /*
|
|
444
|
1983 Rename FILENAME as NEWNAME. Both args must be strings.
|
|
|
1984 If file has names other than FILENAME, it continues to have those names.
|
|
428
|
1985 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1986 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1987 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1988 This is what happens in interactive use with M-x.
|
|
|
1989 */
|
|
|
1990 (filename, newname, ok_if_already_exists))
|
|
|
1991 {
|
|
|
1992 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1993 Lisp_Object handler;
|
|
|
1994 struct gcpro gcpro1, gcpro2;
|
|
|
1995
|
|
|
1996 GCPRO2 (filename, newname);
|
|
|
1997 CHECK_STRING (filename);
|
|
|
1998 CHECK_STRING (newname);
|
|
|
1999 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2000 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2001
|
|
|
2002 /* If the file name has special constructs in it,
|
|
|
2003 call the corresponding file handler. */
|
|
|
2004 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
2005 if (NILP (handler))
|
|
|
2006 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
2007 if (!NILP (handler))
|
|
|
2008 {
|
|
|
2009 UNGCPRO;
|
|
|
2010 return call4 (handler, Qrename_file,
|
|
|
2011 filename, newname, ok_if_already_exists);
|
|
|
2012 }
|
|
|
2013
|
|
|
2014 /* When second argument is a directory, rename the file into it.
|
|
|
2015 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
2016 */
|
|
|
2017 if (!NILP (Ffile_directory_p (newname)))
|
|
|
2018 {
|
|
|
2019 Lisp_Object args[3];
|
|
|
2020 struct gcpro ngcpro1;
|
|
|
2021 int i = 1;
|
|
|
2022
|
|
|
2023 args[0] = newname;
|
|
|
2024 args[1] = Qnil; args[2] = Qnil;
|
|
|
2025 NGCPRO1 (*args);
|
|
|
2026 ngcpro1.nvars = 3;
|
|
826
|
2027 if (string_byte (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
428
|
2028 args[i++] = build_string ("/");
|
|
|
2029 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
2030 newname = Fconcat (i, args);
|
|
|
2031 NUNGCPRO;
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 if (NILP (ok_if_already_exists)
|
|
|
2035 || INTP (ok_if_already_exists))
|
|
|
2036 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
2037 INTP (ok_if_already_exists), 0);
|
|
|
2038
|
|
442
|
2039 /* We have configure check for rename() and emulate using
|
|
|
2040 link()/unlink() if necessary. */
|
|
771
|
2041 if (0 > qxe_rename (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2042 {
|
|
|
2043 if (errno == EXDEV)
|
|
|
2044 {
|
|
|
2045 Fcopy_file (filename, newname,
|
|
|
2046 /* We have already prompted if it was an integer,
|
|
|
2047 so don't have copy-file prompt again. */
|
|
|
2048 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
2049 Qt);
|
|
|
2050 Fdelete_file (filename);
|
|
|
2051 }
|
|
|
2052 else
|
|
|
2053 {
|
|
563
|
2054 report_file_error ("Renaming", list3 (Qunbound, filename, newname));
|
|
428
|
2055 }
|
|
|
2056 }
|
|
|
2057 UNGCPRO;
|
|
|
2058 return Qnil;
|
|
|
2059 }
|
|
|
2060
|
|
|
2061 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
2062 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
444
|
2063 Give FILENAME additional name NEWNAME. Both args must be strings.
|
|
428
|
2064 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
2065 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2066 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
2067 This is what happens in interactive use with M-x.
|
|
|
2068 */
|
|
|
2069 (filename, newname, ok_if_already_exists))
|
|
|
2070 {
|
|
|
2071 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2072 Lisp_Object handler;
|
|
|
2073 struct gcpro gcpro1, gcpro2;
|
|
|
2074
|
|
|
2075 GCPRO2 (filename, newname);
|
|
|
2076 CHECK_STRING (filename);
|
|
|
2077 CHECK_STRING (newname);
|
|
|
2078 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2079 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2080
|
|
|
2081 /* If the file name has special constructs in it,
|
|
|
2082 call the corresponding file handler. */
|
|
|
2083 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2084 if (!NILP (handler))
|
|
|
2085 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2086 newname, ok_if_already_exists));
|
|
|
2087
|
|
|
2088 /* If the new name has special constructs in it,
|
|
|
2089 call the corresponding file handler. */
|
|
|
2090 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2091 if (!NILP (handler))
|
|
|
2092 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2093 newname, ok_if_already_exists));
|
|
|
2094
|
|
|
2095 if (NILP (ok_if_already_exists)
|
|
|
2096 || INTP (ok_if_already_exists))
|
|
|
2097 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2098 INTP (ok_if_already_exists), 0);
|
|
771
|
2099 /* #### Emacs 20.6 contains an implementation of link() in w32.c.
|
|
|
2100 Need to port. */
|
|
|
2101 #ifndef HAVE_LINK
|
|
563
|
2102 signal_error_2 (Qunimplemented, "Adding new name", filename, newname);
|
|
771
|
2103 #else /* HAVE_LINK */
|
|
|
2104 qxe_unlink (XSTRING_DATA (newname));
|
|
|
2105 if (0 > qxe_link (XSTRING_DATA (filename), XSTRING_DATA (newname)))
|
|
428
|
2106 {
|
|
|
2107 report_file_error ("Adding new name",
|
|
563
|
2108 list3 (Qunbound, filename, newname));
|
|
428
|
2109 }
|
|
771
|
2110 #endif /* HAVE_LINK */
|
|
428
|
2111
|
|
|
2112 UNGCPRO;
|
|
|
2113 return Qnil;
|
|
|
2114 }
|
|
|
2115
|
|
|
2116 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2117 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2118 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2119 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2120 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2121 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2122 This happens for interactive use with M-x.
|
|
|
2123 */
|
|
|
2124 (filename, linkname, ok_if_already_exists))
|
|
|
2125 {
|
|
|
2126 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2127 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2128 Lisp_Object handler;
|
|
|
2129 struct gcpro gcpro1, gcpro2;
|
|
|
2130
|
|
|
2131 GCPRO2 (filename, linkname);
|
|
|
2132 CHECK_STRING (filename);
|
|
|
2133 CHECK_STRING (linkname);
|
|
|
2134 /* If the link target has a ~, we must expand it to get
|
|
|
2135 a truly valid file name. Otherwise, do not expand;
|
|
|
2136 we want to permit links to relative file names. */
|
|
826
|
2137 if (string_byte (filename, 0) == '~')
|
|
428
|
2138 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2139 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2140
|
|
|
2141 /* If the file name has special constructs in it,
|
|
|
2142 call the corresponding file handler. */
|
|
|
2143 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2144 if (!NILP (handler))
|
|
|
2145 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2146 ok_if_already_exists));
|
|
|
2147
|
|
|
2148 /* If the new link name has special constructs in it,
|
|
|
2149 call the corresponding file handler. */
|
|
|
2150 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2151 if (!NILP (handler))
|
|
|
2152 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2153 linkname, ok_if_already_exists));
|
|
|
2154
|
|
771
|
2155 #ifdef HAVE_SYMLINK
|
|
428
|
2156 if (NILP (ok_if_already_exists)
|
|
|
2157 || INTP (ok_if_already_exists))
|
|
|
2158 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2159 INTP (ok_if_already_exists), 0);
|
|
|
2160
|
|
771
|
2161 qxe_unlink (XSTRING_DATA (linkname));
|
|
|
2162 if (0 > qxe_symlink (XSTRING_DATA (filename),
|
|
|
2163 XSTRING_DATA (linkname)))
|
|
428
|
2164 {
|
|
|
2165 report_file_error ("Making symbolic link",
|
|
563
|
2166 list3 (Qunbound, filename, linkname));
|
|
428
|
2167 }
|
|
771
|
2168 #endif
|
|
442
|
2169
|
|
428
|
2170 UNGCPRO;
|
|
|
2171 return Qnil;
|
|
|
2172 }
|
|
|
2173
|
|
|
2174 #ifdef HPUX_NET
|
|
|
2175
|
|
|
2176 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2177 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2178 */
|
|
|
2179 (path, login))
|
|
|
2180 {
|
|
|
2181 int netresult;
|
|
440
|
2182 const char *path_ext;
|
|
|
2183 const char *login_ext;
|
|
428
|
2184
|
|
|
2185 CHECK_STRING (path);
|
|
|
2186 CHECK_STRING (login);
|
|
|
2187
|
|
|
2188 /* netunam, being a strange-o system call only used once, is not
|
|
|
2189 encapsulated. */
|
|
440
|
2190
|
|
442
|
2191 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2192 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2193
|
|
|
2194 netresult = netunam (path_ext, login_ext);
|
|
|
2195
|
|
|
2196 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2197 }
|
|
|
2198 #endif /* HPUX_NET */
|
|
|
2199
|
|
|
2200 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2201 Return t if file FILENAME specifies an absolute path name.
|
|
|
2202 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2203 */
|
|
|
2204 (filename))
|
|
|
2205 {
|
|
|
2206 /* This function does not GC */
|
|
665
|
2207 Intbyte *ptr;
|
|
428
|
2208
|
|
|
2209 CHECK_STRING (filename);
|
|
|
2210 ptr = XSTRING_DATA (filename);
|
|
|
2211 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
657
|
2212 #ifdef WIN32_FILENAMES
|
|
428
|
2213 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2214 #endif
|
|
|
2215 ) ? Qt : Qnil;
|
|
|
2216 }
|
|
|
2217
|
|
|
2218 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2219
|
|
|
2220 static int
|
|
771
|
2221 check_executable (Lisp_Object filename)
|
|
428
|
2222 {
|
|
442
|
2223 #ifdef WIN32_NATIVE
|
|
428
|
2224 struct stat st;
|
|
771
|
2225 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2226 return 0;
|
|
|
2227 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2228 #else /* not WIN32_NATIVE */
|
|
428
|
2229 #ifdef HAVE_EACCESS
|
|
771
|
2230 return qxe_eaccess (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2231 #else
|
|
|
2232 /* Access isn't quite right because it uses the real uid
|
|
|
2233 and we really want to test with the effective uid.
|
|
|
2234 But Unix doesn't give us a right way to do it. */
|
|
771
|
2235 return qxe_access (XSTRING_DATA (filename), X_OK) >= 0;
|
|
428
|
2236 #endif /* HAVE_EACCESS */
|
|
442
|
2237 #endif /* not WIN32_NATIVE */
|
|
428
|
2238 }
|
|
|
2239
|
|
|
2240 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2241
|
|
|
2242 static int
|
|
771
|
2243 check_writable (const Intbyte *filename)
|
|
428
|
2244 {
|
|
|
2245 #ifdef HAVE_EACCESS
|
|
771
|
2246 return (qxe_eaccess (filename, W_OK) >= 0);
|
|
428
|
2247 #else
|
|
|
2248 /* Access isn't quite right because it uses the real uid
|
|
|
2249 and we really want to test with the effective uid.
|
|
|
2250 But Unix doesn't give us a right way to do it.
|
|
|
2251 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2252 but would lose for directories. */
|
|
771
|
2253 return (qxe_access (filename, W_OK) >= 0);
|
|
428
|
2254 #endif
|
|
|
2255 }
|
|
|
2256
|
|
|
2257 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2258 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2259 See also `file-readable-p' and `file-attributes'.
|
|
|
2260 */
|
|
|
2261 (filename))
|
|
|
2262 {
|
|
442
|
2263 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2264 Lisp_Object abspath;
|
|
|
2265 Lisp_Object handler;
|
|
|
2266 struct stat statbuf;
|
|
|
2267 struct gcpro gcpro1;
|
|
|
2268
|
|
|
2269 CHECK_STRING (filename);
|
|
|
2270 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2271
|
|
|
2272 /* If the file name has special constructs in it,
|
|
|
2273 call the corresponding file handler. */
|
|
|
2274 GCPRO1 (abspath);
|
|
|
2275 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2276 UNGCPRO;
|
|
|
2277 if (!NILP (handler))
|
|
|
2278 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2279
|
|
771
|
2280 return qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2281 }
|
|
|
2282
|
|
|
2283 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2284 Return t if FILENAME can be executed by you.
|
|
|
2285 For a directory, this means you can access files in that directory.
|
|
|
2286 */
|
|
|
2287 (filename))
|
|
|
2288
|
|
|
2289 {
|
|
442
|
2290 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2291 Lisp_Object abspath;
|
|
|
2292 Lisp_Object handler;
|
|
|
2293 struct gcpro gcpro1;
|
|
|
2294
|
|
|
2295 CHECK_STRING (filename);
|
|
|
2296 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2297
|
|
|
2298 /* If the file name has special constructs in it,
|
|
|
2299 call the corresponding file handler. */
|
|
|
2300 GCPRO1 (abspath);
|
|
|
2301 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2302 UNGCPRO;
|
|
|
2303 if (!NILP (handler))
|
|
|
2304 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2305
|
|
771
|
2306 return check_executable (abspath) ? Qt : Qnil;
|
|
428
|
2307 }
|
|
|
2308
|
|
|
2309 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2310 Return t if file FILENAME exists and you can read it.
|
|
|
2311 See also `file-exists-p' and `file-attributes'.
|
|
|
2312 */
|
|
|
2313 (filename))
|
|
|
2314 {
|
|
|
2315 /* This function can GC */
|
|
|
2316 Lisp_Object abspath = Qnil;
|
|
|
2317 Lisp_Object handler;
|
|
|
2318 struct gcpro gcpro1;
|
|
|
2319 GCPRO1 (abspath);
|
|
|
2320
|
|
|
2321 CHECK_STRING (filename);
|
|
|
2322 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2323
|
|
|
2324 /* If the file name has special constructs in it,
|
|
|
2325 call the corresponding file handler. */
|
|
|
2326 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2327 if (!NILP (handler))
|
|
|
2328 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2329
|
|
657
|
2330 #if defined(WIN32_FILENAMES)
|
|
428
|
2331 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2332 UNGCPRO;
|
|
771
|
2333 if (qxe_access (XSTRING_DATA (abspath), 0) == 0)
|
|
428
|
2334 return Qt;
|
|
|
2335 else
|
|
|
2336 return Qnil;
|
|
657
|
2337 #else /* not WIN32_FILENAMES */
|
|
428
|
2338 {
|
|
771
|
2339 int desc = qxe_interruptible_open (XSTRING_DATA (abspath),
|
|
|
2340 O_RDONLY | OPEN_BINARY, 0);
|
|
428
|
2341 UNGCPRO;
|
|
|
2342 if (desc < 0)
|
|
|
2343 return Qnil;
|
|
771
|
2344 retry_close (desc);
|
|
428
|
2345 return Qt;
|
|
|
2346 }
|
|
657
|
2347 #endif /* not WIN32_FILENAMES */
|
|
428
|
2348 }
|
|
|
2349
|
|
|
2350 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2351 on the RT/PC. */
|
|
|
2352 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2353 Return t if file FILENAME can be written or created by you.
|
|
|
2354 */
|
|
|
2355 (filename))
|
|
|
2356 {
|
|
|
2357 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2358 Lisp_Object abspath, dir;
|
|
|
2359 Lisp_Object handler;
|
|
|
2360 struct stat statbuf;
|
|
|
2361 struct gcpro gcpro1;
|
|
|
2362
|
|
|
2363 CHECK_STRING (filename);
|
|
|
2364 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2365
|
|
|
2366 /* If the file name has special constructs in it,
|
|
|
2367 call the corresponding file handler. */
|
|
|
2368 GCPRO1 (abspath);
|
|
|
2369 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2370 UNGCPRO;
|
|
|
2371 if (!NILP (handler))
|
|
|
2372 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2373
|
|
771
|
2374 if (qxe_stat (XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2375 return (check_writable (XSTRING_DATA (abspath))
|
|
428
|
2376 ? Qt : Qnil);
|
|
|
2377
|
|
|
2378
|
|
|
2379 GCPRO1 (abspath);
|
|
|
2380 dir = Ffile_name_directory (abspath);
|
|
|
2381 UNGCPRO;
|
|
771
|
2382 return (check_writable (!NILP (dir) ? XSTRING_DATA (dir) : (Intbyte *) "")
|
|
428
|
2383 ? Qt : Qnil);
|
|
|
2384 }
|
|
|
2385
|
|
|
2386 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2387 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2388 The value is the name of the file to which it is linked.
|
|
|
2389 Otherwise returns nil.
|
|
|
2390 */
|
|
|
2391 (filename))
|
|
|
2392 {
|
|
|
2393 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2394 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
771
|
2395 #ifdef HAVE_READLINK
|
|
|
2396 Intbyte *buf;
|
|
428
|
2397 int bufsize;
|
|
|
2398 int valsize;
|
|
|
2399 Lisp_Object val;
|
|
442
|
2400 #endif
|
|
428
|
2401 Lisp_Object handler;
|
|
|
2402 struct gcpro gcpro1;
|
|
|
2403
|
|
|
2404 CHECK_STRING (filename);
|
|
|
2405 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2406
|
|
|
2407 /* If the file name has special constructs in it,
|
|
|
2408 call the corresponding file handler. */
|
|
|
2409 GCPRO1 (filename);
|
|
|
2410 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2411 UNGCPRO;
|
|
|
2412 if (!NILP (handler))
|
|
|
2413 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2414
|
|
771
|
2415 #ifdef HAVE_READLINK
|
|
428
|
2416 bufsize = 100;
|
|
|
2417 while (1)
|
|
|
2418 {
|
|
771
|
2419 buf = xnew_array_and_zero (Intbyte, bufsize);
|
|
|
2420 valsize = qxe_readlink (XSTRING_DATA (filename),
|
|
|
2421 buf, bufsize);
|
|
428
|
2422 if (valsize < bufsize) break;
|
|
|
2423 /* Buffer was not long enough */
|
|
|
2424 xfree (buf);
|
|
|
2425 bufsize *= 2;
|
|
|
2426 }
|
|
|
2427 if (valsize == -1)
|
|
|
2428 {
|
|
|
2429 xfree (buf);
|
|
|
2430 return Qnil;
|
|
|
2431 }
|
|
771
|
2432 val = make_string (buf, valsize);
|
|
428
|
2433 xfree (buf);
|
|
|
2434 return val;
|
|
771
|
2435 #else /* not HAVE_READLINK */
|
|
428
|
2436 return Qnil;
|
|
771
|
2437 #endif /* not HAVE_READLINK */
|
|
428
|
2438 }
|
|
|
2439
|
|
|
2440 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2441 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2442 A directory name spec may be given instead; then the value is t
|
|
|
2443 if the directory so specified exists and really is a directory.
|
|
|
2444 */
|
|
|
2445 (filename))
|
|
|
2446 {
|
|
|
2447 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2448 Lisp_Object abspath;
|
|
|
2449 struct stat st;
|
|
|
2450 Lisp_Object handler;
|
|
|
2451 struct gcpro gcpro1;
|
|
|
2452
|
|
|
2453 GCPRO1 (current_buffer->directory);
|
|
|
2454 abspath = expand_and_dir_to_file (filename,
|
|
|
2455 current_buffer->directory);
|
|
|
2456 UNGCPRO;
|
|
|
2457
|
|
|
2458 /* If the file name has special constructs in it,
|
|
|
2459 call the corresponding file handler. */
|
|
|
2460 GCPRO1 (abspath);
|
|
|
2461 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2462 UNGCPRO;
|
|
|
2463 if (!NILP (handler))
|
|
|
2464 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2465
|
|
771
|
2466 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2467 return Qnil;
|
|
|
2468 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2469 }
|
|
|
2470
|
|
|
2471 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2472 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2473 and files in that directory can be opened by you. In order to use a
|
|
|
2474 directory as a buffer's current directory, this predicate must return true.
|
|
|
2475 A directory name spec may be given instead; then the value is t
|
|
|
2476 if the directory so specified exists and really is a readable and
|
|
|
2477 searchable directory.
|
|
|
2478 */
|
|
|
2479 (filename))
|
|
|
2480 {
|
|
|
2481 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2482 Lisp_Object handler;
|
|
|
2483
|
|
|
2484 /* If the file name has special constructs in it,
|
|
|
2485 call the corresponding file handler. */
|
|
|
2486 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2487 if (!NILP (handler))
|
|
|
2488 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2489 filename);
|
|
|
2490
|
|
442
|
2491 #if !defined(WIN32_NATIVE)
|
|
428
|
2492 if (NILP (Ffile_directory_p (filename)))
|
|
|
2493 return (Qnil);
|
|
|
2494 else
|
|
|
2495 return Ffile_executable_p (filename);
|
|
|
2496 #else
|
|
|
2497 {
|
|
|
2498 int tem;
|
|
|
2499 struct gcpro gcpro1;
|
|
|
2500 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2501 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2502 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2503 relocates the string in `filename'; and finally file-directory-p
|
|
|
2504 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2505 to file-executable-p. */
|
|
|
2506 GCPRO1 (filename);
|
|
|
2507 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2508 || NILP (Ffile_executable_p (filename)));
|
|
|
2509 UNGCPRO;
|
|
|
2510 return tem ? Qnil : Qt;
|
|
|
2511 }
|
|
442
|
2512 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2513 }
|
|
|
2514
|
|
|
2515 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
|
2516 Return t if file FILENAME is the name of a regular file.
|
|
|
2517 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2518 */
|
|
|
2519 (filename))
|
|
|
2520 {
|
|
|
2521 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2522 Lisp_Object abspath;
|
|
|
2523 struct stat st;
|
|
|
2524 Lisp_Object handler;
|
|
|
2525 struct gcpro gcpro1;
|
|
|
2526
|
|
|
2527 GCPRO1 (current_buffer->directory);
|
|
|
2528 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2529 UNGCPRO;
|
|
|
2530
|
|
|
2531 /* If the file name has special constructs in it,
|
|
|
2532 call the corresponding file handler. */
|
|
|
2533 GCPRO1 (abspath);
|
|
|
2534 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2535 UNGCPRO;
|
|
|
2536 if (!NILP (handler))
|
|
|
2537 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2538
|
|
771
|
2539 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2540 return Qnil;
|
|
|
2541 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2542 }
|
|
|
2543
|
|
|
2544 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
444
|
2545 Return mode bits of file named FILENAME, as an integer.
|
|
428
|
2546 */
|
|
|
2547 (filename))
|
|
|
2548 {
|
|
|
2549 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2550 Lisp_Object abspath;
|
|
|
2551 struct stat st;
|
|
|
2552 Lisp_Object handler;
|
|
|
2553 struct gcpro gcpro1;
|
|
|
2554
|
|
|
2555 GCPRO1 (current_buffer->directory);
|
|
|
2556 abspath = expand_and_dir_to_file (filename,
|
|
|
2557 current_buffer->directory);
|
|
|
2558 UNGCPRO;
|
|
|
2559
|
|
|
2560 /* If the file name has special constructs in it,
|
|
|
2561 call the corresponding file handler. */
|
|
|
2562 GCPRO1 (abspath);
|
|
|
2563 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2564 UNGCPRO;
|
|
|
2565 if (!NILP (handler))
|
|
|
2566 return call2 (handler, Qfile_modes, abspath);
|
|
|
2567
|
|
771
|
2568 if (qxe_stat (XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2569 return Qnil;
|
|
|
2570 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2571 #if 0
|
|
442
|
2572 #ifdef WIN32_NATIVE
|
|
771
|
2573 if (check_executable (abspath))
|
|
428
|
2574 st.st_mode |= S_IEXEC;
|
|
442
|
2575 #endif /* WIN32_NATIVE */
|
|
428
|
2576 #endif /* 0 */
|
|
|
2577
|
|
|
2578 return make_int (st.st_mode & 07777);
|
|
|
2579 }
|
|
|
2580
|
|
|
2581 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
444
|
2582 Set mode bits of file named FILENAME to MODE (an integer).
|
|
428
|
2583 Only the 12 low bits of MODE are used.
|
|
|
2584 */
|
|
|
2585 (filename, mode))
|
|
|
2586 {
|
|
|
2587 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2588 Lisp_Object abspath;
|
|
|
2589 Lisp_Object handler;
|
|
|
2590 struct gcpro gcpro1;
|
|
|
2591
|
|
|
2592 GCPRO1 (current_buffer->directory);
|
|
|
2593 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2594 UNGCPRO;
|
|
|
2595
|
|
|
2596 CHECK_INT (mode);
|
|
|
2597
|
|
|
2598 /* If the file name has special constructs in it,
|
|
|
2599 call the corresponding file handler. */
|
|
|
2600 GCPRO1 (abspath);
|
|
|
2601 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2602 UNGCPRO;
|
|
|
2603 if (!NILP (handler))
|
|
|
2604 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2605
|
|
771
|
2606 if (qxe_chmod (XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
563
|
2607 report_file_error ("Doing chmod", abspath);
|
|
428
|
2608
|
|
|
2609 return Qnil;
|
|
|
2610 }
|
|
|
2611
|
|
|
2612 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2613 Set the file permission bits for newly created files.
|
|
444
|
2614 The argument MODE should be an integer; if a bit in MODE is 1,
|
|
|
2615 subsequently created files will not have the permission corresponding
|
|
|
2616 to that bit enabled. Only the low 9 bits are used.
|
|
428
|
2617 This setting is inherited by subprocesses.
|
|
|
2618 */
|
|
|
2619 (mode))
|
|
|
2620 {
|
|
|
2621 CHECK_INT (mode);
|
|
|
2622
|
|
|
2623 umask ((~ XINT (mode)) & 0777);
|
|
|
2624
|
|
|
2625 return Qnil;
|
|
|
2626 }
|
|
|
2627
|
|
|
2628 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2629 Return the default file protection for created files.
|
|
|
2630 The umask value determines which permissions are enabled in newly
|
|
|
2631 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2632 created files will not have that permission enabled.
|
|
|
2633 */
|
|
|
2634 ())
|
|
|
2635 {
|
|
|
2636 int mode;
|
|
|
2637
|
|
|
2638 mode = umask (0);
|
|
|
2639 umask (mode);
|
|
|
2640
|
|
|
2641 return make_int ((~ mode) & 0777);
|
|
|
2642 }
|
|
|
2643
|
|
|
2644 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2645 Tell Unix to finish all pending disk updates.
|
|
|
2646 */
|
|
|
2647 ())
|
|
|
2648 {
|
|
442
|
2649 #ifndef WIN32_NATIVE
|
|
428
|
2650 sync ();
|
|
|
2651 #endif
|
|
|
2652 return Qnil;
|
|
|
2653 }
|
|
|
2654
|
|
|
2655
|
|
|
2656 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2657 Return t if file FILE1 is newer than file FILE2.
|
|
|
2658 If FILE1 does not exist, the answer is nil;
|
|
|
2659 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2660 */
|
|
|
2661 (file1, file2))
|
|
|
2662 {
|
|
|
2663 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2664 Lisp_Object abspath1, abspath2;
|
|
|
2665 struct stat st;
|
|
|
2666 int mtime1;
|
|
|
2667 Lisp_Object handler;
|
|
|
2668 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2669
|
|
|
2670 CHECK_STRING (file1);
|
|
|
2671 CHECK_STRING (file2);
|
|
|
2672
|
|
|
2673 abspath1 = Qnil;
|
|
|
2674 abspath2 = Qnil;
|
|
|
2675
|
|
|
2676 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2677 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2678 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2679
|
|
|
2680 /* If the file name has special constructs in it,
|
|
|
2681 call the corresponding file handler. */
|
|
|
2682 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2683 if (NILP (handler))
|
|
|
2684 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2685 UNGCPRO;
|
|
|
2686 if (!NILP (handler))
|
|
|
2687 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2688 abspath2);
|
|
|
2689
|
|
771
|
2690 if (qxe_stat (XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2691 return Qnil;
|
|
|
2692
|
|
|
2693 mtime1 = st.st_mtime;
|
|
|
2694
|
|
771
|
2695 if (qxe_stat (XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2696 return Qt;
|
|
|
2697
|
|
|
2698 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2699 }
|
|
|
2700
|
|
|
2701
|
|
|
2702 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2703 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2704 #define READ_BUF_SIZE (1 << 15)
|
|
|
2705
|
|
|
2706 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2707 1, 7, 0, /*
|
|
|
2708 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2709 This function is identical to `insert-file-contents' except for the
|
|
771
|
2710 handling of the CODESYS and USED-CODESYS arguments.
|
|
|
2711
|
|
|
2712 The file is decoded according to CODESYS; if omitted, no conversion
|
|
|
2713 happens. If USED-CODESYS is non-nil, it should be a symbol, and the actual
|
|
|
2714 coding system that was used for the decoding is stored into it. It will in
|
|
|
2715 general be different from CODESYS if CODESYS specifies automatic encoding
|
|
|
2716 detection or end-of-line detection.
|
|
428
|
2717
|
|
444
|
2718 Currently START and END refer to byte positions (as opposed to character
|
|
771
|
2719 positions), even in Mule and under MS Windows. (Fixing this, particularly
|
|
|
2720 under Mule, is very difficult.)
|
|
428
|
2721 */
|
|
444
|
2722 (filename, visit, start, end, replace, codesys, used_codesys))
|
|
428
|
2723 {
|
|
|
2724 /* This function can call lisp */
|
|
|
2725 struct stat st;
|
|
|
2726 int fd;
|
|
|
2727 int saverrno = 0;
|
|
|
2728 Charcount inserted = 0;
|
|
|
2729 int speccount;
|
|
|
2730 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
2731 Lisp_Object handler = Qnil, val;
|
|
|
2732 int total;
|
|
665
|
2733 Intbyte read_buf[READ_BUF_SIZE];
|
|
428
|
2734 int mc_count;
|
|
|
2735 struct buffer *buf = current_buffer;
|
|
|
2736 Lisp_Object curbuf;
|
|
|
2737 int not_regular = 0;
|
|
771
|
2738 int do_speedy_insert =
|
|
|
2739 coding_system_is_binary (Fget_coding_system (codesys));
|
|
428
|
2740
|
|
|
2741 if (buf->base_buffer && ! NILP (visit))
|
|
563
|
2742 invalid_operation ("Cannot do file visiting in an indirect buffer", Qunbound);
|
|
428
|
2743
|
|
|
2744 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2745 That's called in begin_multiple_change() or wherever. */
|
|
|
2746
|
|
|
2747 val = Qnil;
|
|
|
2748
|
|
|
2749 /* #### dmoore - should probably check in various places to see if
|
|
|
2750 curbuf was killed and if so signal an error? */
|
|
|
2751
|
|
793
|
2752 curbuf = wrap_buffer (buf);
|
|
428
|
2753
|
|
|
2754 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
|
2755
|
|
|
2756 mc_count = (NILP (replace)) ?
|
|
|
2757 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2758 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2759
|
|
|
2760 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2761 an unwind_protect */
|
|
|
2762
|
|
|
2763 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2764
|
|
|
2765 /* If the file name has special constructs in it,
|
|
|
2766 call the corresponding file handler. */
|
|
|
2767 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2768 if (!NILP (handler))
|
|
|
2769 {
|
|
|
2770 val = call6 (handler, Qinsert_file_contents, filename,
|
|
444
|
2771 visit, start, end, replace);
|
|
428
|
2772 goto handled;
|
|
|
2773 }
|
|
|
2774
|
|
|
2775 if (!NILP (used_codesys))
|
|
|
2776 CHECK_SYMBOL (used_codesys);
|
|
|
2777
|
|
444
|
2778 if ( (!NILP (start) || !NILP (end)) && !NILP (visit) )
|
|
563
|
2779 invalid_operation ("Attempt to visit less than an entire file", Qunbound);
|
|
428
|
2780
|
|
|
2781 fd = -1;
|
|
|
2782
|
|
771
|
2783 if (qxe_stat (XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2784 {
|
|
771
|
2785 if (fd >= 0) retry_close (fd);
|
|
428
|
2786 badopen:
|
|
|
2787 if (NILP (visit))
|
|
563
|
2788 report_file_error ("Opening input file", filename);
|
|
428
|
2789 st.st_mtime = -1;
|
|
|
2790 goto notfound;
|
|
|
2791 }
|
|
|
2792
|
|
|
2793 #ifdef S_IFREG
|
|
|
2794 /* Signal an error if we are accessing a non-regular file, with
|
|
444
|
2795 REPLACE, START or END being non-nil. */
|
|
428
|
2796 if (!S_ISREG (st.st_mode))
|
|
|
2797 {
|
|
|
2798 not_regular = 1;
|
|
|
2799
|
|
|
2800 if (!NILP (visit))
|
|
|
2801 goto notfound;
|
|
|
2802
|
|
444
|
2803 if (!NILP (replace) || !NILP (start) || !NILP (end))
|
|
428
|
2804 {
|
|
|
2805 end_multiple_change (buf, mc_count);
|
|
|
2806
|
|
444
|
2807 RETURN_UNGCPRO
|
|
|
2808 (Fsignal (Qfile_error,
|
|
771
|
2809 list2 (build_msg_string("not a regular file"),
|
|
444
|
2810 filename)));
|
|
428
|
2811 }
|
|
|
2812 }
|
|
|
2813 #endif /* S_IFREG */
|
|
|
2814
|
|
444
|
2815 if (!NILP (start))
|
|
|
2816 CHECK_INT (start);
|
|
428
|
2817 else
|
|
444
|
2818 start = Qzero;
|
|
428
|
2819
|
|
|
2820 if (!NILP (end))
|
|
|
2821 CHECK_INT (end);
|
|
|
2822
|
|
|
2823 if (fd < 0)
|
|
|
2824 {
|
|
771
|
2825 if ((fd = qxe_interruptible_open (XSTRING_DATA (filename),
|
|
|
2826 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
428
|
2827 goto badopen;
|
|
|
2828 }
|
|
|
2829
|
|
|
2830 /* Replacement should preserve point as it preserves markers. */
|
|
|
2831 if (!NILP (replace))
|
|
|
2832 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2833
|
|
|
2834 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2835
|
|
|
2836 /* Supposedly happens on VMS. */
|
|
|
2837 if (st.st_size < 0)
|
|
563
|
2838 signal_error (Qfile_error, "File size is negative", Qunbound);
|
|
428
|
2839
|
|
|
2840 if (NILP (end))
|
|
|
2841 {
|
|
|
2842 if (!not_regular)
|
|
|
2843 {
|
|
|
2844 end = make_int (st.st_size);
|
|
|
2845 if (XINT (end) != st.st_size)
|
|
563
|
2846 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
2847 }
|
|
|
2848 }
|
|
|
2849
|
|
|
2850 /* If requested, replace the accessible part of the buffer
|
|
|
2851 with the file contents. Avoid replacing text at the
|
|
|
2852 beginning or end of the buffer that matches the file contents;
|
|
771
|
2853 that preserves markers pointing to the unchanged parts. */
|
|
|
2854 /* The replace-mode code is currently implemented by comparing the
|
|
|
2855 file on disk with the contents in the buffer, character by character.
|
|
|
2856 That works only if the characters on disk are exactly what will go into
|
|
|
2857 the buffer -- i.e. `binary' conversion.
|
|
|
2858
|
|
|
2859 FSF tries to implement this in all situations, even the non-binary
|
|
|
2860 conversion, by (in that case) loading the whole converted file into a
|
|
|
2861 separate memory area, then doing the comparison. I really don't see
|
|
|
2862 the point of this, and it will fail spectacularly if the file is many
|
|
|
2863 megabytes in size. To try to get around this, we could certainly read
|
|
|
2864 from the beginning and decode as necessary before comparing, but doing
|
|
|
2865 the same at the end gets very difficult because of the possibility of
|
|
|
2866 modal coding systems -- trying to decode data from any point forward
|
|
|
2867 without decoding previous data might always give you different results
|
|
|
2868 from starting at the beginning. We could try further tricks like
|
|
|
2869 keeping track of which coding systems are non-modal and providing some
|
|
|
2870 extra method for such coding systems to be given a chunk of data that
|
|
|
2871 came from a specified location in a specified file and ask the coding
|
|
|
2872 systems to return a "sync point" from which the data can be read
|
|
|
2873 forward and have results guaranteed to be the same as reading from the
|
|
|
2874 beginning to that point, but I really don't think it's worth it. If
|
|
|
2875 we implemented the FSF "brute-force" method, we would have to put a
|
|
|
2876 reasonable maximum file size on the files. Is any of this worth it?
|
|
|
2877 --ben
|
|
|
2878
|
|
|
2879 */
|
|
|
2880
|
|
428
|
2881 if (!NILP (replace))
|
|
|
2882 {
|
|
771
|
2883 if (!do_speedy_insert)
|
|
|
2884 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2885 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2886 else
|
|
428
|
2887 {
|
|
771
|
2888 char buffer[1 << 14];
|
|
|
2889 Charbpos same_at_start = BUF_BEGV (buf);
|
|
|
2890 Charbpos same_at_end = BUF_ZV (buf);
|
|
|
2891 int overlap;
|
|
|
2892
|
|
|
2893 /* Count how many chars at the start of the file
|
|
|
2894 match the text at the beginning of the buffer. */
|
|
|
2895 while (1)
|
|
|
2896 {
|
|
|
2897 int nread;
|
|
|
2898 Charbpos charbpos;
|
|
|
2899 nread = read_allowing_quit (fd, buffer, sizeof (buffer));
|
|
|
2900 if (nread < 0)
|
|
|
2901 report_file_error ("Reading", filename);
|
|
|
2902 else if (nread == 0)
|
|
|
2903 break;
|
|
|
2904 charbpos = 0;
|
|
|
2905 while (charbpos < nread && same_at_start < BUF_ZV (buf)
|
|
814
|
2906 && BUF_FETCH_CHAR (buf, same_at_start) ==
|
|
|
2907 buffer[charbpos])
|
|
771
|
2908 same_at_start++, charbpos++;
|
|
|
2909 /* If we found a discrepancy, stop the scan.
|
|
|
2910 Otherwise loop around and scan the next bufferful. */
|
|
|
2911 if (charbpos != nread)
|
|
|
2912 break;
|
|
|
2913 }
|
|
|
2914 /* If the file matches the buffer completely,
|
|
|
2915 there's no need to replace anything. */
|
|
|
2916 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2917 {
|
|
|
2918 retry_close (fd);
|
|
|
2919 unbind_to (speccount);
|
|
|
2920 /* Truncate the buffer to the size of the file. */
|
|
|
2921 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2922 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2923 goto handled;
|
|
|
2924 }
|
|
|
2925 /* Count how many chars at the end of the file
|
|
|
2926 match the text at the end of the buffer. */
|
|
|
2927 while (1)
|
|
|
2928 {
|
|
|
2929 int total_read, nread;
|
|
814
|
2930 Charcount charbpos, curpos, trial;
|
|
771
|
2931
|
|
|
2932 /* At what file position are we now scanning? */
|
|
|
2933 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2934 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2935 if (curpos == 0)
|
|
|
2936 break;
|
|
|
2937 /* How much can we scan in the next step? */
|
|
|
2938 trial = min (curpos, (Charbpos) sizeof (buffer));
|
|
|
2939 if (lseek (fd, curpos - trial, 0) < 0)
|
|
|
2940 report_file_error ("Setting file position", filename);
|
|
|
2941
|
|
|
2942 total_read = 0;
|
|
|
2943 while (total_read < trial)
|
|
|
2944 {
|
|
|
2945 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2946 trial - total_read);
|
|
|
2947 if (nread <= 0)
|
|
|
2948 report_file_error ("IO error reading file", filename);
|
|
|
2949 total_read += nread;
|
|
|
2950 }
|
|
|
2951 /* Scan this bufferful from the end, comparing with
|
|
|
2952 the Emacs buffer. */
|
|
|
2953 charbpos = total_read;
|
|
|
2954 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2955 as matching both at the file's beginning and at the end. */
|
|
|
2956 while (charbpos > 0 && same_at_end > same_at_start
|
|
|
2957 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2958 buffer[charbpos - 1])
|
|
|
2959 same_at_end--, charbpos--;
|
|
|
2960 /* If we found a discrepancy, stop the scan.
|
|
|
2961 Otherwise loop around and scan the preceding bufferful. */
|
|
|
2962 if (charbpos != 0)
|
|
|
2963 break;
|
|
|
2964 /* If display current starts at beginning of line,
|
|
|
2965 keep it that way. */
|
|
|
2966 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2967 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2968 !NILP (Fbolp (wrap_buffer (buf)));
|
|
|
2969 }
|
|
|
2970
|
|
|
2971 /* Don't try to reuse the same piece of text twice. */
|
|
|
2972 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2973 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2974 if (overlap > 0)
|
|
|
2975 same_at_end += overlap;
|
|
|
2976
|
|
|
2977 /* Arrange to read only the nonmatching middle part of the file. */
|
|
|
2978 start = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
2979 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2980
|
|
428
|
2981 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2982 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
771
|
2983 /* Insert from the file at the proper position. */
|
|
|
2984 BUF_SET_PT (buf, same_at_start);
|
|
428
|
2985 }
|
|
|
2986 }
|
|
|
2987
|
|
|
2988 if (!not_regular)
|
|
|
2989 {
|
|
444
|
2990 total = XINT (end) - XINT (start);
|
|
428
|
2991
|
|
|
2992 /* Make sure point-max won't overflow after this insertion. */
|
|
|
2993 if (total != XINT (make_int (total)))
|
|
563
|
2994 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
2995 }
|
|
|
2996 else
|
|
|
2997 /* For a special file, all we can do is guess. The value of -1
|
|
|
2998 will make the stream functions read as much as possible. */
|
|
|
2999 total = -1;
|
|
|
3000
|
|
444
|
3001 if (XINT (start) != 0
|
|
428
|
3002 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3003 connivings above will normally put the file pointer other than
|
|
|
3004 where it should be. */
|
|
771
|
3005 || (!NILP (replace) && do_speedy_insert))
|
|
428
|
3006 {
|
|
444
|
3007 if (lseek (fd, XINT (start), 0) < 0)
|
|
563
|
3008 report_file_error ("Setting file position", filename);
|
|
428
|
3009 }
|
|
|
3010
|
|
|
3011 {
|
|
665
|
3012 Charbpos cur_point = BUF_PT (buf);
|
|
428
|
3013 struct gcpro ngcpro1;
|
|
|
3014 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3015 LSTR_ALLOW_QUIT);
|
|
|
3016
|
|
|
3017 NGCPRO1 (stream);
|
|
|
3018 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
771
|
3019 stream = make_coding_input_stream
|
|
|
3020 (XLSTREAM (stream), get_coding_system_for_text_file (codesys, 1),
|
|
800
|
3021 CODING_DECODE, 0);
|
|
428
|
3022 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3023
|
|
|
3024 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
3025
|
|
|
3026 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3027 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3028 occurs inside of the filedesc stream. */
|
|
|
3029 while (1)
|
|
|
3030 {
|
|
665
|
3031 Bytecount this_len;
|
|
428
|
3032 Charcount cc_inserted;
|
|
|
3033
|
|
|
3034 QUIT;
|
|
|
3035 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3036 sizeof (read_buf));
|
|
|
3037
|
|
|
3038 if (this_len <= 0)
|
|
|
3039 {
|
|
|
3040 if (this_len < 0)
|
|
|
3041 saverrno = errno;
|
|
|
3042 break;
|
|
|
3043 }
|
|
|
3044
|
|
|
3045 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3046 this_len,
|
|
|
3047 !NILP (visit)
|
|
|
3048 ? INSDEL_NO_LOCKING : 0);
|
|
|
3049 inserted += cc_inserted;
|
|
|
3050 cur_point += cc_inserted;
|
|
|
3051 }
|
|
|
3052 if (!NILP (used_codesys))
|
|
|
3053 {
|
|
|
3054 Fset (used_codesys,
|
|
771
|
3055 XCODING_SYSTEM_NAME
|
|
|
3056 (coding_stream_detected_coding_system (XLSTREAM (stream))));
|
|
428
|
3057 }
|
|
|
3058 NUNGCPRO;
|
|
|
3059 }
|
|
|
3060
|
|
|
3061 /* Close the file/stream */
|
|
771
|
3062 unbind_to (speccount);
|
|
428
|
3063
|
|
|
3064 if (saverrno != 0)
|
|
|
3065 {
|
|
563
|
3066 errno = saverrno;
|
|
|
3067 report_file_error ("Reading", filename);
|
|
428
|
3068 }
|
|
|
3069
|
|
|
3070 notfound:
|
|
|
3071 handled:
|
|
|
3072
|
|
|
3073 end_multiple_change (buf, mc_count);
|
|
|
3074
|
|
|
3075 if (!NILP (visit))
|
|
|
3076 {
|
|
|
3077 if (!EQ (buf->undo_list, Qt))
|
|
|
3078 buf->undo_list = Qnil;
|
|
|
3079 if (NILP (handler))
|
|
|
3080 {
|
|
|
3081 buf->modtime = st.st_mtime;
|
|
|
3082 buf->filename = filename;
|
|
|
3083 /* XEmacs addition: */
|
|
|
3084 /* This function used to be in C, ostensibly so that
|
|
|
3085 it could be called here. But that's just silly.
|
|
|
3086 There's no reason C code can't call out to Lisp
|
|
|
3087 code, and it's a lot cleaner this way. */
|
|
444
|
3088 /* Note: compute-buffer-file-truename is called for
|
|
|
3089 side-effect! Its return value is intentionally
|
|
|
3090 ignored. */
|
|
428
|
3091 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
771
|
3092 call1 (Qcompute_buffer_file_truename, wrap_buffer (buf));
|
|
428
|
3093 }
|
|
|
3094 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3095 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3096 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3097 #ifdef CLASH_DETECTION
|
|
|
3098 if (NILP (handler))
|
|
|
3099 {
|
|
|
3100 if (!NILP (buf->file_truename))
|
|
|
3101 unlock_file (buf->file_truename);
|
|
|
3102 unlock_file (filename);
|
|
|
3103 }
|
|
|
3104 #endif /* CLASH_DETECTION */
|
|
|
3105 if (not_regular)
|
|
|
3106 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
771
|
3107 list2 (build_msg_string ("not a regular file"),
|
|
428
|
3108 filename)));
|
|
|
3109
|
|
|
3110 /* If visiting nonexistent file, return nil. */
|
|
|
3111 if (buf->modtime == -1)
|
|
|
3112 report_file_error ("Opening input file",
|
|
563
|
3113 filename);
|
|
428
|
3114 }
|
|
|
3115
|
|
|
3116 /* Decode file format */
|
|
|
3117 if (inserted > 0)
|
|
|
3118 {
|
|
|
3119 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3120 Qnil, make_int (inserted), visit);
|
|
|
3121 CHECK_INT (insval);
|
|
|
3122 inserted = XINT (insval);
|
|
|
3123 }
|
|
|
3124
|
|
|
3125 if (inserted > 0)
|
|
|
3126 {
|
|
|
3127 Lisp_Object p;
|
|
|
3128 struct gcpro ngcpro1;
|
|
|
3129
|
|
|
3130 NGCPRO1 (p);
|
|
|
3131 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
|
3132 {
|
|
|
3133 Lisp_Object insval =
|
|
|
3134 call1 (XCAR (p), make_int (inserted));
|
|
|
3135 if (!NILP (insval))
|
|
|
3136 {
|
|
|
3137 CHECK_NATNUM (insval);
|
|
|
3138 inserted = XINT (insval);
|
|
|
3139 }
|
|
|
3140 QUIT;
|
|
|
3141 }
|
|
|
3142 NUNGCPRO;
|
|
|
3143 }
|
|
|
3144
|
|
|
3145 UNGCPRO;
|
|
|
3146
|
|
|
3147 if (!NILP (val))
|
|
|
3148 return (val);
|
|
|
3149 else
|
|
|
3150 return (list2 (filename, make_int (inserted)));
|
|
|
3151 }
|
|
|
3152
|
|
|
3153
|
|
|
3154 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3155 Lisp_Object *annot);
|
|
|
3156 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3157
|
|
|
3158 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3159 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3160
|
|
|
3161 static Lisp_Object
|
|
|
3162 build_annotations_unwind (Lisp_Object buf)
|
|
|
3163 {
|
|
|
3164 Lisp_Object tembuf;
|
|
|
3165
|
|
|
3166 if (XBUFFER (buf) == current_buffer)
|
|
|
3167 return Qnil;
|
|
|
3168 tembuf = Fcurrent_buffer ();
|
|
|
3169 Fset_buffer (buf);
|
|
|
3170 Fkill_buffer (tembuf);
|
|
|
3171 return Qnil;
|
|
|
3172 }
|
|
|
3173
|
|
|
3174 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
|
3175 "r\nFWrite region to file: ", /*
|
|
|
3176 Write current region into specified file; no coding-system frobbing.
|
|
|
3177 This function is identical to `write-region' except for the handling
|
|
|
3178 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3179 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3180 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3181 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
764
|
3182
|
|
|
3183 As a special kludge to support auto-saving, when START is nil START and
|
|
|
3184 END are set to the beginning and end, respectively, of the buffer,
|
|
|
3185 regardless of any restrictions. Don't use this feature. It is documented
|
|
|
3186 here because write-region handler writers need to be aware of it.
|
|
428
|
3187 */
|
|
|
3188 (start, end, filename, append, visit, lockname, codesys))
|
|
|
3189 {
|
|
442
|
3190 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3191 int desc;
|
|
|
3192 int failure;
|
|
|
3193 int save_errno = 0;
|
|
|
3194 struct stat st;
|
|
442
|
3195 Lisp_Object fn = Qnil;
|
|
428
|
3196 int speccount = specpdl_depth ();
|
|
|
3197 int visiting_other = STRINGP (visit);
|
|
|
3198 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3199 int quietly = (!visiting && !NILP (visit));
|
|
|
3200 Lisp_Object visit_file = Qnil;
|
|
|
3201 Lisp_Object annotations = Qnil;
|
|
|
3202 struct buffer *given_buffer;
|
|
665
|
3203 Charbpos start1, end1;
|
|
442
|
3204 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3205 struct gcpro ngcpro1, ngcpro2;
|
|
793
|
3206 Lisp_Object curbuf = wrap_buffer (current_buffer);
|
|
|
3207
|
|
442
|
3208
|
|
|
3209 /* start, end, visit, and append are never modified in this fun
|
|
|
3210 so we don't protect them. */
|
|
|
3211 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3212 NGCPRO2 (curbuf, fn);
|
|
|
3213
|
|
|
3214 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3215 we should signal an error rather than blissfully continuing
|
|
|
3216 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3217 to protect the current_buffer from being destroyed, but the
|
|
442
|
3218 multiple return points make this a pain in the butt. ]] we do
|
|
|
3219 protect curbuf now. --ben */
|
|
428
|
3220
|
|
771
|
3221 codesys = get_coding_system_for_text_file (codesys, 0);
|
|
428
|
3222
|
|
|
3223 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3224 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3225 curbuf);
|
|
428
|
3226
|
|
|
3227 if (!NILP (start) && !STRINGP (start))
|
|
|
3228 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3229
|
|
|
3230 {
|
|
|
3231 Lisp_Object handler;
|
|
|
3232
|
|
|
3233 if (visiting_other)
|
|
|
3234 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3235 else
|
|
|
3236 visit_file = filename;
|
|
|
3237 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3238
|
|
|
3239 if (NILP (lockname))
|
|
|
3240 lockname = visit_file;
|
|
|
3241
|
|
442
|
3242 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3243 more Lisp calling. */
|
|
428
|
3244 /* If the file name has special constructs in it,
|
|
|
3245 call the corresponding file handler. */
|
|
|
3246 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3247 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3248 if (NILP (handler) && STRINGP (visit))
|
|
|
3249 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3250
|
|
|
3251 if (!NILP (handler))
|
|
|
3252 {
|
|
|
3253 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3254 filename, append, visit, lockname, codesys);
|
|
|
3255 if (visiting)
|
|
|
3256 {
|
|
|
3257 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3258 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3259 current_buffer->filename = visit_file;
|
|
|
3260 MARK_MODELINE_CHANGED;
|
|
|
3261 }
|
|
442
|
3262 NUNGCPRO;
|
|
|
3263 UNGCPRO;
|
|
428
|
3264 return val;
|
|
|
3265 }
|
|
|
3266 }
|
|
|
3267
|
|
|
3268 #ifdef CLASH_DETECTION
|
|
|
3269 if (!auto_saving)
|
|
442
|
3270 lock_file (lockname);
|
|
428
|
3271 #endif /* CLASH_DETECTION */
|
|
|
3272
|
|
|
3273 /* Special kludge to simplify auto-saving. */
|
|
|
3274 if (NILP (start))
|
|
|
3275 {
|
|
|
3276 start1 = BUF_BEG (current_buffer);
|
|
|
3277 end1 = BUF_Z (current_buffer);
|
|
|
3278 }
|
|
|
3279
|
|
|
3280 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3281
|
|
|
3282 given_buffer = current_buffer;
|
|
|
3283 annotations = build_annotations (start, end);
|
|
|
3284 if (current_buffer != given_buffer)
|
|
|
3285 {
|
|
|
3286 start1 = BUF_BEGV (current_buffer);
|
|
|
3287 end1 = BUF_ZV (current_buffer);
|
|
|
3288 }
|
|
|
3289
|
|
|
3290 fn = filename;
|
|
|
3291 desc = -1;
|
|
|
3292 if (!NILP (append))
|
|
|
3293 {
|
|
771
|
3294 desc = qxe_open (XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
428
|
3295 }
|
|
|
3296 if (desc < 0)
|
|
|
3297 {
|
|
771
|
3298 desc = qxe_open (XSTRING_DATA (fn),
|
|
|
3299 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3300 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3301 }
|
|
|
3302
|
|
|
3303 if (desc < 0)
|
|
|
3304 {
|
|
|
3305 #ifdef CLASH_DETECTION
|
|
|
3306 save_errno = errno;
|
|
|
3307 if (!auto_saving) unlock_file (lockname);
|
|
|
3308 errno = save_errno;
|
|
|
3309 #endif /* CLASH_DETECTION */
|
|
563
|
3310 report_file_error ("Opening output file", filename);
|
|
428
|
3311 }
|
|
|
3312
|
|
|
3313 {
|
|
|
3314 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3315 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3316 struct gcpro nngcpro1, nngcpro2;
|
|
771
|
3317 /* need to gcpro; QUIT could happen out of call to retry_write() */
|
|
442
|
3318 NNGCPRO2 (instream, outstream);
|
|
428
|
3319
|
|
|
3320 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3321
|
|
|
3322 if (!NILP (append))
|
|
|
3323 {
|
|
|
3324 if (lseek (desc, 0, 2) < 0)
|
|
|
3325 {
|
|
|
3326 #ifdef CLASH_DETECTION
|
|
|
3327 if (!auto_saving) unlock_file (lockname);
|
|
|
3328 #endif /* CLASH_DETECTION */
|
|
|
3329 report_file_error ("Lseek error",
|
|
563
|
3330 filename);
|
|
428
|
3331 }
|
|
|
3332 }
|
|
|
3333
|
|
|
3334 failure = 0;
|
|
|
3335
|
|
|
3336 /* Note: I tried increasing the buffering size, along with
|
|
|
3337 various other tricks, but nothing seemed to make much of
|
|
|
3338 a difference in the time it took to save a large file.
|
|
|
3339 (Actually that's not true. With a local disk, changing
|
|
|
3340 the buffer size doesn't seem to make much difference.
|
|
|
3341 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3342 because you're affecting the number of network requests
|
|
|
3343 that need to be made, and there could be a large latency
|
|
|
3344 for each request. So I've increased the buffer size
|
|
|
3345 to 64K.) */
|
|
|
3346 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3347 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3348 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3349 outstream =
|
|
800
|
3350 make_coding_output_stream (XLSTREAM (outstream), codesys,
|
|
|
3351 CODING_ENCODE, 0);
|
|
428
|
3352 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3353 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3354 if (STRINGP (start))
|
|
|
3355 {
|
|
|
3356 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3357 start1 = 0;
|
|
|
3358 }
|
|
|
3359 else
|
|
|
3360 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3361 LSTR_SELECTIVE |
|
|
|
3362 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3363 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3364 &annotations)));
|
|
|
3365 save_errno = errno;
|
|
|
3366 /* Note that this doesn't close the desc since we created the
|
|
|
3367 stream without the LSTR_CLOSING flag, but it does
|
|
|
3368 flush out any buffered data. */
|
|
|
3369 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3370 {
|
|
|
3371 failure = 1;
|
|
|
3372 save_errno = errno;
|
|
|
3373 }
|
|
|
3374 Lstream_close (XLSTREAM (instream));
|
|
|
3375
|
|
|
3376 #ifdef HAVE_FSYNC
|
|
|
3377 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3378 Disk full in NFS may be reported here. */
|
|
|
3379 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3380 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3381 if (!auto_saving && fsync (desc) < 0
|
|
|
3382 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3383 && errno != EINTR)
|
|
|
3384 {
|
|
|
3385 failure = 1;
|
|
|
3386 save_errno = errno;
|
|
|
3387 }
|
|
|
3388 #endif /* HAVE_FSYNC */
|
|
|
3389
|
|
440
|
3390 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3391 systems where close() can change the modtime. This is known to
|
|
|
3392 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3393 Rather than handling this on a per-system basis, we
|
|
771
|
3394 unconditionally do the qxe_stat() after the retry_close(). */
|
|
428
|
3395
|
|
|
3396 /* NFS can report a write failure now. */
|
|
771
|
3397 if (retry_close (desc) < 0)
|
|
428
|
3398 {
|
|
|
3399 failure = 1;
|
|
|
3400 save_errno = errno;
|
|
|
3401 }
|
|
|
3402
|
|
|
3403 /* Discard the close unwind-protect. Execute the one for
|
|
|
3404 build_annotations (switches back to the original current buffer
|
|
|
3405 as necessary). */
|
|
|
3406 XCAR (desc_locative) = Qnil;
|
|
771
|
3407 unbind_to (speccount);
|
|
442
|
3408
|
|
|
3409 NNUNGCPRO;
|
|
428
|
3410 }
|
|
|
3411
|
|
771
|
3412 qxe_stat (XSTRING_DATA (fn), &st);
|
|
428
|
3413
|
|
|
3414 #ifdef CLASH_DETECTION
|
|
|
3415 if (!auto_saving)
|
|
|
3416 unlock_file (lockname);
|
|
|
3417 #endif /* CLASH_DETECTION */
|
|
|
3418
|
|
|
3419 /* Do this before reporting IO error
|
|
|
3420 to avoid a "file has changed on disk" warning on
|
|
|
3421 next attempt to save. */
|
|
|
3422 if (visiting)
|
|
|
3423 current_buffer->modtime = st.st_mtime;
|
|
|
3424
|
|
|
3425 if (failure)
|
|
442
|
3426 {
|
|
|
3427 errno = save_errno;
|
|
563
|
3428 report_file_error ("Writing file", fn);
|
|
442
|
3429 }
|
|
428
|
3430
|
|
|
3431 if (visiting)
|
|
|
3432 {
|
|
|
3433 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3434 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3435 current_buffer->filename = visit_file;
|
|
|
3436 MARK_MODELINE_CHANGED;
|
|
|
3437 }
|
|
|
3438 else if (quietly)
|
|
|
3439 {
|
|
442
|
3440 NUNGCPRO;
|
|
|
3441 UNGCPRO;
|
|
428
|
3442 return Qnil;
|
|
|
3443 }
|
|
|
3444
|
|
|
3445 if (!auto_saving)
|
|
|
3446 {
|
|
|
3447 if (visiting_other)
|
|
|
3448 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3449 else
|
|
|
3450 {
|
|
446
|
3451 Lisp_Object fsp = Qnil;
|
|
442
|
3452 struct gcpro nngcpro1;
|
|
|
3453
|
|
|
3454 NNGCPRO1 (fsp);
|
|
428
|
3455 fsp = Ffile_symlink_p (fn);
|
|
|
3456 if (NILP (fsp))
|
|
|
3457 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3458 else
|
|
|
3459 message ("Wrote %s (symlink to %s)",
|
|
|
3460 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3461 NNUNGCPRO;
|
|
428
|
3462 }
|
|
|
3463 }
|
|
442
|
3464 NUNGCPRO;
|
|
|
3465 UNGCPRO;
|
|
428
|
3466 return Qnil;
|
|
|
3467 }
|
|
|
3468
|
|
|
3469 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3470 something so stupid as a subr, just sort the fucking list more
|
|
|
3471 intelligently. */
|
|
|
3472 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3473 Return t if (car A) is numerically less than (car B).
|
|
|
3474 */
|
|
|
3475 (a, b))
|
|
|
3476 {
|
|
|
3477 Lisp_Object objs[2];
|
|
|
3478 objs[0] = Fcar (a);
|
|
|
3479 objs[1] = Fcar (b);
|
|
|
3480 return Flss (2, objs);
|
|
|
3481 }
|
|
|
3482
|
|
|
3483 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3484 wrote the above comment. */
|
|
|
3485 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3486 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3487 */
|
|
|
3488 (a, b))
|
|
|
3489 {
|
|
|
3490 Lisp_Object objs[2];
|
|
|
3491 objs[0] = Fcdr (a);
|
|
|
3492 objs[1] = Fcdr (b);
|
|
|
3493 return Flss (2, objs);
|
|
|
3494 }
|
|
|
3495
|
|
|
3496 /* Build the complete list of annotations appropriate for writing out
|
|
|
3497 the text between START and END, by calling all the functions in
|
|
|
3498 write-region-annotate-functions and merging the lists they return.
|
|
|
3499 If one of these functions switches to a different buffer, we assume
|
|
|
3500 that buffer contains altered text. Therefore, the caller must
|
|
|
3501 make sure to restore the current buffer in all cases,
|
|
|
3502 as save-excursion would do. */
|
|
|
3503
|
|
|
3504 static Lisp_Object
|
|
|
3505 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3506 {
|
|
|
3507 /* This function can GC */
|
|
|
3508 Lisp_Object annotations;
|
|
|
3509 Lisp_Object p, res;
|
|
|
3510 struct gcpro gcpro1, gcpro2;
|
|
793
|
3511 Lisp_Object original_buffer = wrap_buffer (current_buffer);
|
|
|
3512
|
|
428
|
3513
|
|
|
3514 annotations = Qnil;
|
|
|
3515 p = Vwrite_region_annotate_functions;
|
|
|
3516 GCPRO2 (annotations, p);
|
|
|
3517 while (!NILP (p))
|
|
|
3518 {
|
|
|
3519 struct buffer *given_buffer = current_buffer;
|
|
|
3520 Vwrite_region_annotations_so_far = annotations;
|
|
|
3521 res = call2 (Fcar (p), start, end);
|
|
|
3522 /* If the function makes a different buffer current,
|
|
|
3523 assume that means this buffer contains altered text to be output.
|
|
|
3524 Reset START and END from the buffer bounds
|
|
|
3525 and discard all previous annotations because they should have
|
|
|
3526 been dealt with by this function. */
|
|
|
3527 if (current_buffer != given_buffer)
|
|
|
3528 {
|
|
|
3529 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3530 end = make_int (BUF_ZV (current_buffer));
|
|
|
3531 annotations = Qnil;
|
|
|
3532 }
|
|
|
3533 Flength (res); /* Check basic validity of return value */
|
|
|
3534 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3535 p = Fcdr (p);
|
|
|
3536 }
|
|
|
3537
|
|
|
3538 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3539 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3540 p = Vauto_save_file_format;
|
|
|
3541 else
|
|
|
3542 p = current_buffer->file_format;
|
|
|
3543 while (!NILP (p))
|
|
|
3544 {
|
|
|
3545 struct buffer *given_buffer = current_buffer;
|
|
|
3546 Vwrite_region_annotations_so_far = annotations;
|
|
|
3547 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3548 original_buffer);
|
|
|
3549 if (current_buffer != given_buffer)
|
|
|
3550 {
|
|
|
3551 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3552 end = make_int (BUF_ZV (current_buffer));
|
|
|
3553 annotations = Qnil;
|
|
|
3554 }
|
|
|
3555 Flength (res);
|
|
|
3556 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3557 p = Fcdr (p);
|
|
|
3558 }
|
|
|
3559 UNGCPRO;
|
|
|
3560 return annotations;
|
|
|
3561 }
|
|
|
3562
|
|
|
3563 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3564 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3565 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3566 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3567 each at its appropriate position.
|
|
|
3568
|
|
|
3569 Modify *ANNOT by discarding elements as we output them.
|
|
|
3570 The return value is negative in case of system call failure. */
|
|
|
3571
|
|
|
3572 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3573 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3574 batch to 64K to reduce the number of system calls. */
|
|
|
3575
|
|
|
3576 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3577
|
|
|
3578 static int
|
|
|
3579 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3580 Lisp_Object *annot)
|
|
|
3581 {
|
|
|
3582 Lisp_Object tem;
|
|
|
3583 int nextpos;
|
|
|
3584 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3585 Lstream *instr = XLSTREAM (instream);
|
|
|
3586 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3587
|
|
|
3588 while (LISTP (*annot))
|
|
|
3589 {
|
|
|
3590 tem = Fcar_safe (Fcar (*annot));
|
|
|
3591 if (INTP (tem))
|
|
|
3592 nextpos = XINT (tem);
|
|
|
3593 else
|
|
|
3594 nextpos = INT_MAX;
|
|
|
3595 #ifdef MULE
|
|
|
3596 /* If there are annotations left and we have Mule, then we
|
|
|
3597 have to do the I/O one emchar at a time so we can
|
|
|
3598 determine when to insert the annotation. */
|
|
|
3599 if (!NILP (*annot))
|
|
|
3600 {
|
|
|
3601 Emchar ch;
|
|
|
3602 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3603 {
|
|
|
3604 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3605 return -1;
|
|
|
3606 pos++;
|
|
|
3607 }
|
|
|
3608 }
|
|
|
3609 else
|
|
|
3610 #endif /* MULE */
|
|
|
3611 {
|
|
|
3612 while (pos != nextpos)
|
|
|
3613 {
|
|
|
3614 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3615 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3616
|
|
|
3617 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3618 if (chunk < 0)
|
|
|
3619 return -1;
|
|
|
3620 if (chunk == 0) /* EOF */
|
|
|
3621 break;
|
|
771
|
3622 if (Lstream_write (outstr, largebuf, chunk) < 0)
|
|
428
|
3623 return -1;
|
|
|
3624 pos += chunk;
|
|
|
3625 }
|
|
|
3626 }
|
|
|
3627 if (pos == nextpos)
|
|
|
3628 {
|
|
|
3629 tem = Fcdr (Fcar (*annot));
|
|
|
3630 if (STRINGP (tem))
|
|
|
3631 {
|
|
|
3632 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3633 XSTRING_LENGTH (tem)) < 0)
|
|
|
3634 return -1;
|
|
|
3635 }
|
|
|
3636 *annot = Fcdr (*annot);
|
|
|
3637 }
|
|
|
3638 else
|
|
|
3639 return 0;
|
|
|
3640 }
|
|
|
3641 return -1;
|
|
|
3642 }
|
|
|
3643
|
|
|
3644
|
|
|
3645
|
|
|
3646 #if 0
|
|
|
3647 #include <des_crypt.h>
|
|
|
3648
|
|
|
3649 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3650 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3651
|
|
|
3652 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3653 Encrypt STRING using KEY.
|
|
|
3654 */
|
|
|
3655 (string, key))
|
|
|
3656 {
|
|
|
3657 char *encrypted_string, *raw_key;
|
|
|
3658 int rounded_size, extra, key_size;
|
|
|
3659
|
|
|
3660 /* !!#### May produce bogus data under Mule. */
|
|
|
3661 CHECK_STRING (string);
|
|
|
3662 CHECK_STRING (key);
|
|
|
3663
|
|
|
3664 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3665 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
851
|
3666 encrypted_string = ALLOCA (rounded_size + 1);
|
|
428
|
3667 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
|
3668 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3669
|
|
|
3670 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3671
|
|
851
|
3672 raw_key = ALLOCA (CRYPT_KEY_SIZE + 1);
|
|
428
|
3673 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3674 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3675
|
|
|
3676 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3677 DES_ENCRYPT | DES_SW);
|
|
|
3678 return make_string (encrypted_string, rounded_size);
|
|
|
3679 }
|
|
|
3680
|
|
|
3681 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3682 Decrypt STRING using KEY.
|
|
|
3683 */
|
|
|
3684 (string, key))
|
|
|
3685 {
|
|
771
|
3686 /* !!#### May produce bogus data under Mule. */
|
|
428
|
3687 char *decrypted_string, *raw_key;
|
|
|
3688 int string_size, key_size;
|
|
|
3689
|
|
|
3690 CHECK_STRING (string);
|
|
|
3691 CHECK_STRING (key);
|
|
|
3692
|
|
|
3693 string_size = XSTRING_LENGTH (string) + 1;
|
|
851
|
3694 decrypted_string = ALLOCA (string_size);
|
|
428
|
3695 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
|
3696 decrypted_string[string_size - 1] = '\0';
|
|
|
3697
|
|
|
3698 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3699
|
|
851
|
3700 raw_key = ALLOCA (CRYPT_KEY_SIZE + 1);
|
|
428
|
3701 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3702 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3703
|
|
|
3704
|
|
|
3705 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
|
3706 return make_string (decrypted_string, string_size - 1);
|
|
|
3707 }
|
|
|
3708 #endif /* 0 */
|
|
|
3709
|
|
|
3710
|
|
|
3711 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
444
|
3712 Return t if last mod time of BUFFER's visited file matches what BUFFER records.
|
|
428
|
3713 This means that the file has not been changed since it was visited or saved.
|
|
|
3714 */
|
|
444
|
3715 (buffer))
|
|
428
|
3716 {
|
|
442
|
3717 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3718 struct buffer *b;
|
|
|
3719 struct stat st;
|
|
|
3720 Lisp_Object handler;
|
|
|
3721
|
|
444
|
3722 CHECK_BUFFER (buffer);
|
|
|
3723 b = XBUFFER (buffer);
|
|
428
|
3724
|
|
|
3725 if (!STRINGP (b->filename)) return Qt;
|
|
|
3726 if (b->modtime == 0) return Qt;
|
|
|
3727
|
|
|
3728 /* If the file name has special constructs in it,
|
|
|
3729 call the corresponding file handler. */
|
|
|
3730 handler = Ffind_file_name_handler (b->filename,
|
|
|
3731 Qverify_visited_file_modtime);
|
|
|
3732 if (!NILP (handler))
|
|
444
|
3733 return call2 (handler, Qverify_visited_file_modtime, buffer);
|
|
428
|
3734
|
|
771
|
3735 if (qxe_stat (XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3736 {
|
|
|
3737 /* If the file doesn't exist now and didn't exist before,
|
|
|
3738 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3739 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3740 st.st_mtime = -1;
|
|
|
3741 else
|
|
|
3742 st.st_mtime = 0;
|
|
|
3743 }
|
|
|
3744 if (st.st_mtime == b->modtime
|
|
|
3745 /* If both are positive, accept them if they are off by one second. */
|
|
|
3746 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3747 && (st.st_mtime == b->modtime + 1
|
|
|
3748 || st.st_mtime == b->modtime - 1)))
|
|
|
3749 return Qt;
|
|
|
3750 return Qnil;
|
|
|
3751 }
|
|
|
3752
|
|
|
3753 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3754 Clear out records of last mod time of visited file.
|
|
|
3755 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3756 */
|
|
|
3757 ())
|
|
|
3758 {
|
|
|
3759 current_buffer->modtime = 0;
|
|
|
3760 return Qnil;
|
|
|
3761 }
|
|
|
3762
|
|
|
3763 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3764 Return the current buffer's recorded visited file modification time.
|
|
|
3765 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3766 that `file-attributes' returns.
|
|
|
3767 */
|
|
|
3768 ())
|
|
|
3769 {
|
|
|
3770 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3771 }
|
|
|
3772
|
|
|
3773 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3774 Update buffer's recorded modification time from the visited file's time.
|
|
|
3775 Useful if the buffer was not read from the file normally
|
|
|
3776 or if the file itself has been changed for some known benign reason.
|
|
|
3777 An argument specifies the modification time value to use
|
|
|
3778 \(instead of that of the visited file), in the form of a list
|
|
|
3779 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3780 */
|
|
|
3781 (time_list))
|
|
|
3782 {
|
|
|
3783 /* This function can call lisp */
|
|
|
3784 if (!NILP (time_list))
|
|
|
3785 {
|
|
|
3786 time_t the_time;
|
|
|
3787 lisp_to_time (time_list, &the_time);
|
|
|
3788 current_buffer->modtime = (int) the_time;
|
|
|
3789 }
|
|
|
3790 else
|
|
|
3791 {
|
|
446
|
3792 Lisp_Object filename = Qnil;
|
|
428
|
3793 struct stat st;
|
|
|
3794 Lisp_Object handler;
|
|
|
3795 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3796
|
|
|
3797 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3798 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3799
|
|
|
3800 /* If the file name has special constructs in it,
|
|
|
3801 call the corresponding file handler. */
|
|
|
3802 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3803 UNGCPRO;
|
|
|
3804 if (!NILP (handler))
|
|
|
3805 /* The handler can find the file name the same way we did. */
|
|
|
3806 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
771
|
3807 else if (qxe_stat (XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3808 current_buffer->modtime = st.st_mtime;
|
|
|
3809 }
|
|
|
3810
|
|
|
3811 return Qnil;
|
|
|
3812 }
|
|
|
3813
|
|
|
3814 static Lisp_Object
|
|
|
3815 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3816 {
|
|
|
3817 /* This function can call lisp */
|
|
|
3818 if (gc_in_progress)
|
|
|
3819 return Qnil;
|
|
|
3820 /* Don't try printing an error message after everything is gone! */
|
|
|
3821 if (preparing_for_armageddon)
|
|
|
3822 return Qnil;
|
|
|
3823 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3824 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3825 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3826 Fsleep_for (make_int (1));
|
|
|
3827 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3828 Fsleep_for (make_int (1));
|
|
|
3829 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3830 Fsleep_for (make_int (1));
|
|
|
3831 return Qnil;
|
|
|
3832 }
|
|
|
3833
|
|
|
3834 static Lisp_Object
|
|
|
3835 auto_save_1 (Lisp_Object ignored)
|
|
|
3836 {
|
|
|
3837 /* This function can call lisp */
|
|
|
3838 /* #### I think caller is protecting current_buffer? */
|
|
|
3839 struct stat st;
|
|
|
3840 Lisp_Object fn = current_buffer->filename;
|
|
|
3841 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3842
|
|
|
3843 if (!STRINGP (a))
|
|
|
3844 return (Qnil);
|
|
|
3845
|
|
|
3846 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3847 if (STRINGP (fn) &&
|
|
771
|
3848 qxe_stat (XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
3849 /* But make sure we can overwrite it later! */
|
|
|
3850 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3851 else
|
|
|
3852 /* default mode for auto-save files of buffers with no file is
|
|
|
3853 readable by owner only. This may annoy some small number of
|
|
|
3854 people, but the alternative removes all privacy from email. */
|
|
|
3855 auto_save_mode_bits = 0600;
|
|
|
3856
|
|
|
3857 return
|
|
|
3858 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
771
|
3859 #if 1 /* #### Kyle wants it changed to not use escape-quoted. Think
|
|
|
3860 carefully about how this works. */
|
|
|
3861 Qescape_quoted
|
|
|
3862 #else
|
|
707
|
3863 current_buffer->buffer_file_coding_system
|
|
428
|
3864 #endif
|
|
|
3865 );
|
|
|
3866 }
|
|
|
3867
|
|
|
3868 static Lisp_Object
|
|
|
3869 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3870 {
|
|
771
|
3871 warn_when_safe_lispobj
|
|
793
|
3872 (Qfile, Qerror,
|
|
771
|
3873 Fcons (build_msg_string ("Invalid auto-save list-file"),
|
|
|
3874 Fcons (Vauto_save_list_file_name,
|
|
|
3875 condition_object)));
|
|
428
|
3876 return Qnil;
|
|
|
3877 }
|
|
|
3878
|
|
|
3879 static Lisp_Object
|
|
|
3880 auto_save_expand_name (Lisp_Object name)
|
|
|
3881 {
|
|
|
3882 struct gcpro gcpro1;
|
|
|
3883
|
|
|
3884 /* note that caller did NOT gc protect name, so we do it. */
|
|
771
|
3885 /* [[dmoore - this might not be necessary, if condition_case_1
|
|
|
3886 protects it. but I don't think it does.]] indeed it doesn't. --ben */
|
|
428
|
3887 GCPRO1 (name);
|
|
|
3888 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3889 }
|
|
|
3890
|
|
|
3891
|
|
|
3892 static Lisp_Object
|
|
|
3893 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3894 {
|
|
771
|
3895 retry_close (XINT (fd));
|
|
428
|
3896 return (fd);
|
|
|
3897 }
|
|
|
3898
|
|
|
3899 static Lisp_Object
|
|
|
3900 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3901 {
|
|
|
3902 auto_saving = XINT (old_auto_saving);
|
|
|
3903 return Qnil;
|
|
|
3904 }
|
|
|
3905
|
|
|
3906 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3907 and if so, tries to avoid touching lisp objects.
|
|
|
3908
|
|
|
3909 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3910 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3911 It's fairly important that we generate autosave files in that case!
|
|
|
3912 */
|
|
|
3913
|
|
|
3914 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
3915 Auto-save all buffers that need it.
|
|
|
3916 This is all buffers that have auto-saving enabled
|
|
|
3917 and are changed since last auto-saved.
|
|
|
3918 Auto-saving writes the buffer into a file
|
|
|
3919 so that your editing is not lost if the system crashes.
|
|
|
3920 This file is not the file you visited; that changes only when you save.
|
|
|
3921 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3922
|
|
|
3923 Non-nil first argument means do not print any message if successful.
|
|
|
3924 Non-nil second argument means save only current buffer.
|
|
|
3925 */
|
|
|
3926 (no_message, current_only))
|
|
|
3927 {
|
|
|
3928 /* This function can call lisp */
|
|
|
3929 struct buffer *b;
|
|
|
3930 Lisp_Object tail, buf;
|
|
|
3931 int auto_saved = 0;
|
|
|
3932 int do_handled_files;
|
|
|
3933 Lisp_Object oquit = Qnil;
|
|
|
3934 Lisp_Object listfile = Qnil;
|
|
|
3935 Lisp_Object old;
|
|
|
3936 int listdesc = -1;
|
|
|
3937 int speccount = specpdl_depth ();
|
|
|
3938 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3939
|
|
793
|
3940 old = wrap_buffer (current_buffer);
|
|
428
|
3941 GCPRO3 (oquit, listfile, old);
|
|
|
3942 check_quit (); /* make Vquit_flag accurate */
|
|
|
3943 /* Ordinarily don't quit within this function,
|
|
|
3944 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3945 oquit = Vquit_flag;
|
|
|
3946 Vquit_flag = Qnil;
|
|
|
3947
|
|
|
3948 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3949 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3950
|
|
|
3951 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3952 no_message = Qt;
|
|
|
3953
|
|
|
3954 run_hook (Qauto_save_hook);
|
|
|
3955
|
|
|
3956 if (STRINGP (Vauto_save_list_file_name))
|
|
|
3957 listfile = condition_case_1 (Qt,
|
|
|
3958 auto_save_expand_name,
|
|
|
3959 Vauto_save_list_file_name,
|
|
|
3960 auto_save_expand_name_error, Qnil);
|
|
|
3961
|
|
|
3962 /* Make sure auto_saving is reset. */
|
|
|
3963 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3964
|
|
|
3965 auto_saving = 1;
|
|
|
3966
|
|
|
3967 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3968 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3969 in the first place, and it would be a shame if Emacs failed to
|
|
|
3970 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3971 ange-ftp'd file. */
|
|
|
3972 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3973 {
|
|
|
3974 for (tail = Vbuffer_alist;
|
|
|
3975 CONSP (tail);
|
|
|
3976 tail = XCDR (tail))
|
|
|
3977 {
|
|
|
3978 buf = XCDR (XCAR (tail));
|
|
|
3979 b = XBUFFER (buf);
|
|
|
3980
|
|
|
3981 if (!NILP (current_only)
|
|
|
3982 && b != current_buffer)
|
|
|
3983 continue;
|
|
|
3984
|
|
|
3985 /* Don't auto-save indirect buffers.
|
|
|
3986 The base buffer takes care of it. */
|
|
|
3987 if (b->base_buffer)
|
|
|
3988 continue;
|
|
|
3989
|
|
|
3990 /* Check for auto save enabled
|
|
|
3991 and file changed since last auto save
|
|
|
3992 and file changed since last real save. */
|
|
|
3993 if (STRINGP (b->auto_save_file_name)
|
|
|
3994 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3995 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3996 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
3997 && XINT (b->saved_size) >= 0
|
|
|
3998 && (do_handled_files
|
|
|
3999 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4000 Qwrite_region))))
|
|
|
4001 {
|
|
|
4002 EMACS_TIME before_time, after_time;
|
|
|
4003
|
|
|
4004 EMACS_GET_TIME (before_time);
|
|
|
4005 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4006 if (!preparing_for_armageddon
|
|
|
4007 && b->auto_save_failure_time >= 0
|
|
|
4008 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4009 1200))
|
|
|
4010 continue;
|
|
|
4011
|
|
|
4012 if (!preparing_for_armageddon &&
|
|
|
4013 (XINT (b->saved_size) * 10
|
|
|
4014 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4015 /* A short file is likely to change a large fraction;
|
|
|
4016 spare the user annoying messages. */
|
|
|
4017 && XINT (b->saved_size) > 5000
|
|
|
4018 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4019 && !NILP (b->filename)
|
|
|
4020 && NILP (no_message)
|
|
|
4021 && disable_auto_save_when_buffer_shrinks)
|
|
|
4022 {
|
|
|
4023 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4024 Unless we're about to crash, in which case auto-save it
|
|
|
4025 anyway.
|
|
|
4026 */
|
|
|
4027 message
|
|
|
4028 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
4029 XSTRING_DATA (b->name));
|
|
|
4030 /* Turn off auto-saving until there's a real save,
|
|
|
4031 and prevent any more warnings. */
|
|
|
4032 b->saved_size = make_int (-1);
|
|
|
4033 if (!gc_in_progress)
|
|
|
4034 Fsleep_for (make_int (1));
|
|
|
4035 continue;
|
|
|
4036 }
|
|
|
4037 set_buffer_internal (b);
|
|
|
4038 if (!auto_saved && NILP (no_message))
|
|
|
4039 {
|
|
442
|
4040 static const unsigned char *msg
|
|
|
4041 = (const unsigned char *) "Auto-saving...";
|
|
428
|
4042 echo_area_message (selected_frame (), msg, Qnil,
|
|
442
|
4043 0, strlen ((const char *) msg),
|
|
428
|
4044 Qauto_saving);
|
|
|
4045 }
|
|
|
4046
|
|
|
4047 /* Open the auto-save list file, if necessary.
|
|
|
4048 We only do this now so that the file only exists
|
|
|
4049 if we actually auto-saved any files. */
|
|
444
|
4050 if (!auto_saved && !inhibit_auto_save_session
|
|
|
4051 && !NILP (Vauto_save_list_file_prefix)
|
|
|
4052 && STRINGP (listfile) && listdesc < 0)
|
|
428
|
4053 {
|
|
771
|
4054 listdesc =
|
|
|
4055 qxe_open (XSTRING_DATA (listfile),
|
|
|
4056 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
4057 CREAT_MODE);
|
|
428
|
4058
|
|
|
4059 /* Arrange to close that file whether or not we get
|
|
|
4060 an error. */
|
|
|
4061 if (listdesc >= 0)
|
|
|
4062 record_unwind_protect (do_auto_save_unwind,
|
|
|
4063 make_int (listdesc));
|
|
|
4064 }
|
|
|
4065
|
|
|
4066 /* Record all the buffers that we are auto-saving in
|
|
|
4067 the special file that lists them. For each of
|
|
|
4068 these buffers, record visited name (if any) and
|
|
|
4069 auto save name. */
|
|
|
4070 if (listdesc >= 0)
|
|
|
4071 {
|
|
442
|
4072 const Extbyte *auto_save_file_name_ext;
|
|
665
|
4073 Bytecount auto_save_file_name_ext_len;
|
|
428
|
4074
|
|
440
|
4075 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
4076 ALLOCA, (auto_save_file_name_ext,
|
|
|
4077 auto_save_file_name_ext_len),
|
|
771
|
4078 Qescape_quoted);
|
|
428
|
4079 if (!NILP (b->filename))
|
|
|
4080 {
|
|
442
|
4081 const Extbyte *filename_ext;
|
|
665
|
4082 Bytecount filename_ext_len;
|
|
428
|
4083
|
|
440
|
4084 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4085 ALLOCA, (filename_ext,
|
|
|
4086 filename_ext_len),
|
|
771
|
4087 Qescape_quoted);
|
|
|
4088 retry_write (listdesc, filename_ext, filename_ext_len);
|
|
428
|
4089 }
|
|
771
|
4090 retry_write (listdesc, "\n", 1);
|
|
|
4091 retry_write (listdesc, auto_save_file_name_ext,
|
|
428
|
4092 auto_save_file_name_ext_len);
|
|
771
|
4093 retry_write (listdesc, "\n", 1);
|
|
428
|
4094 }
|
|
|
4095
|
|
|
4096 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4097 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4098 cause lisp handlers to run. Those handlers may kill
|
|
|
4099 the buffer and then GC. Since the buffer is killed,
|
|
|
4100 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4101 by the GC. We also need to protect tail. */
|
|
|
4102 /* #### There is probably a lot of other code which has
|
|
|
4103 pointers into buffers which may get blown away by
|
|
|
4104 handlers. */
|
|
|
4105 {
|
|
|
4106 struct gcpro ngcpro1, ngcpro2;
|
|
|
4107 NGCPRO2 (buf, tail);
|
|
|
4108 condition_case_1 (Qt,
|
|
|
4109 auto_save_1, Qnil,
|
|
|
4110 auto_save_error, Qnil);
|
|
|
4111 NUNGCPRO;
|
|
|
4112 }
|
|
|
4113 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4114 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
793
|
4115 old = wrap_buffer (current_buffer);
|
|
428
|
4116
|
|
|
4117 set_buffer_internal (XBUFFER (old));
|
|
|
4118 auto_saved++;
|
|
|
4119
|
|
|
4120 /* Handler killed their own buffer! */
|
|
|
4121 if (!BUFFER_LIVE_P(b))
|
|
|
4122 continue;
|
|
|
4123
|
|
|
4124 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4125 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4126 EMACS_GET_TIME (after_time);
|
|
|
4127 /* If auto-save took more than 60 seconds,
|
|
|
4128 assume it was an NFS failure that got a timeout. */
|
|
|
4129 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4130 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4131 }
|
|
|
4132 }
|
|
|
4133 }
|
|
|
4134
|
|
|
4135 /* Prevent another auto save till enough input events come in. */
|
|
|
4136 if (auto_saved)
|
|
|
4137 record_auto_save ();
|
|
|
4138
|
|
|
4139 /* If we didn't save anything into the listfile, remove the old
|
|
|
4140 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4141 rather than before in case we get a crash attempting to autosave
|
|
|
4142 (in that case we'd still want the old one around). */
|
|
|
4143 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
771
|
4144 qxe_unlink (XSTRING_DATA (listfile));
|
|
428
|
4145
|
|
|
4146 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4147 if (auto_saved && NILP (no_message)
|
|
|
4148 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4149 {
|
|
442
|
4150 static const unsigned char *msg
|
|
|
4151 = (const unsigned char *)"Auto-saving...done";
|
|
428
|
4152 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
442
|
4153 strlen ((const char *) msg), Qauto_saving);
|
|
428
|
4154 }
|
|
|
4155
|
|
|
4156 Vquit_flag = oquit;
|
|
|
4157
|
|
771
|
4158 RETURN_UNGCPRO (unbind_to (speccount));
|
|
428
|
4159 }
|
|
|
4160
|
|
|
4161 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4162 Mark current buffer as auto-saved with its current text.
|
|
|
4163 No auto-save file will be written until the buffer changes again.
|
|
|
4164 */
|
|
|
4165 ())
|
|
|
4166 {
|
|
|
4167 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4168 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4169 current_buffer->auto_save_failure_time = -1;
|
|
|
4170 return Qnil;
|
|
|
4171 }
|
|
|
4172
|
|
|
4173 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4174 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4175 */
|
|
|
4176 ())
|
|
|
4177 {
|
|
|
4178 current_buffer->auto_save_failure_time = -1;
|
|
|
4179 return Qnil;
|
|
|
4180 }
|
|
|
4181
|
|
|
4182 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4183 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4184 */
|
|
|
4185 ())
|
|
|
4186 {
|
|
|
4187 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4188 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4189 }
|
|
|
4190
|
|
|
4191
|
|
|
4192 /************************************************************************/
|
|
|
4193 /* initialization */
|
|
|
4194 /************************************************************************/
|
|
|
4195
|
|
|
4196 void
|
|
|
4197 syms_of_fileio (void)
|
|
|
4198 {
|
|
563
|
4199 DEFSYMBOL (Qexpand_file_name);
|
|
|
4200 DEFSYMBOL (Qfile_truename);
|
|
|
4201 DEFSYMBOL (Qsubstitute_in_file_name);
|
|
|
4202 DEFSYMBOL (Qdirectory_file_name);
|
|
|
4203 DEFSYMBOL (Qfile_name_directory);
|
|
|
4204 DEFSYMBOL (Qfile_name_nondirectory);
|
|
|
4205 DEFSYMBOL (Qunhandled_file_name_directory);
|
|
|
4206 DEFSYMBOL (Qfile_name_as_directory);
|
|
|
4207 DEFSYMBOL (Qcopy_file);
|
|
|
4208 DEFSYMBOL (Qmake_directory_internal);
|
|
|
4209 DEFSYMBOL (Qdelete_directory);
|
|
|
4210 DEFSYMBOL (Qdelete_file);
|
|
|
4211 DEFSYMBOL (Qrename_file);
|
|
|
4212 DEFSYMBOL (Qadd_name_to_file);
|
|
|
4213 DEFSYMBOL (Qmake_symbolic_link);
|
|
844
|
4214 DEFSYMBOL (Qmake_temp_name);
|
|
563
|
4215 DEFSYMBOL (Qfile_exists_p);
|
|
|
4216 DEFSYMBOL (Qfile_executable_p);
|
|
|
4217 DEFSYMBOL (Qfile_readable_p);
|
|
|
4218 DEFSYMBOL (Qfile_symlink_p);
|
|
|
4219 DEFSYMBOL (Qfile_writable_p);
|
|
|
4220 DEFSYMBOL (Qfile_directory_p);
|
|
|
4221 DEFSYMBOL (Qfile_regular_p);
|
|
|
4222 DEFSYMBOL (Qfile_accessible_directory_p);
|
|
|
4223 DEFSYMBOL (Qfile_modes);
|
|
|
4224 DEFSYMBOL (Qset_file_modes);
|
|
|
4225 DEFSYMBOL (Qfile_newer_than_file_p);
|
|
|
4226 DEFSYMBOL (Qinsert_file_contents);
|
|
|
4227 DEFSYMBOL (Qwrite_region);
|
|
|
4228 DEFSYMBOL (Qverify_visited_file_modtime);
|
|
|
4229 DEFSYMBOL (Qset_visited_file_modtime);
|
|
|
4230 DEFSYMBOL (Qcar_less_than_car); /* Vomitous! */
|
|
|
4231
|
|
|
4232 DEFSYMBOL (Qauto_save_hook);
|
|
|
4233 DEFSYMBOL (Qauto_save_error);
|
|
|
4234 DEFSYMBOL (Qauto_saving);
|
|
|
4235
|
|
|
4236 DEFSYMBOL (Qformat_decode);
|
|
|
4237 DEFSYMBOL (Qformat_annotate_function);
|
|
|
4238
|
|
|
4239 DEFSYMBOL (Qcompute_buffer_file_truename);
|
|
|
4240
|
|
442
|
4241 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4242
|
|
|
4243 DEFSUBR (Ffind_file_name_handler);
|
|
|
4244
|
|
|
4245 DEFSUBR (Ffile_name_directory);
|
|
|
4246 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4247 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4248 DEFSUBR (Ffile_name_as_directory);
|
|
|
4249 DEFSUBR (Fdirectory_file_name);
|
|
|
4250 DEFSUBR (Fmake_temp_name);
|
|
|
4251 DEFSUBR (Fexpand_file_name);
|
|
|
4252 DEFSUBR (Ffile_truename);
|
|
|
4253 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4254 DEFSUBR (Fcopy_file);
|
|
|
4255 DEFSUBR (Fmake_directory_internal);
|
|
|
4256 DEFSUBR (Fdelete_directory);
|
|
|
4257 DEFSUBR (Fdelete_file);
|
|
|
4258 DEFSUBR (Frename_file);
|
|
|
4259 DEFSUBR (Fadd_name_to_file);
|
|
|
4260 DEFSUBR (Fmake_symbolic_link);
|
|
|
4261 #ifdef HPUX_NET
|
|
|
4262 DEFSUBR (Fsysnetunam);
|
|
|
4263 #endif /* HPUX_NET */
|
|
|
4264 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4265 DEFSUBR (Ffile_exists_p);
|
|
|
4266 DEFSUBR (Ffile_executable_p);
|
|
|
4267 DEFSUBR (Ffile_readable_p);
|
|
|
4268 DEFSUBR (Ffile_writable_p);
|
|
|
4269 DEFSUBR (Ffile_symlink_p);
|
|
|
4270 DEFSUBR (Ffile_directory_p);
|
|
|
4271 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4272 DEFSUBR (Ffile_regular_p);
|
|
|
4273 DEFSUBR (Ffile_modes);
|
|
|
4274 DEFSUBR (Fset_file_modes);
|
|
|
4275 DEFSUBR (Fset_default_file_modes);
|
|
|
4276 DEFSUBR (Fdefault_file_modes);
|
|
|
4277 DEFSUBR (Funix_sync);
|
|
|
4278 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4279 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4280 DEFSUBR (Fwrite_region_internal);
|
|
|
4281 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4282 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4283 #if 0
|
|
|
4284 DEFSUBR (Fencrypt_string);
|
|
|
4285 DEFSUBR (Fdecrypt_string);
|
|
|
4286 #endif
|
|
|
4287 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4288 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4289 DEFSUBR (Fvisited_file_modtime);
|
|
|
4290 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4291
|
|
|
4292 DEFSUBR (Fdo_auto_save);
|
|
|
4293 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4294 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4295 DEFSUBR (Frecent_auto_save_p);
|
|
|
4296 }
|
|
|
4297
|
|
|
4298 void
|
|
|
4299 vars_of_fileio (void)
|
|
|
4300 {
|
|
|
4301 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4302 *Format in which to write auto-save files.
|
|
|
4303 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4304 If it is t, which is the default, auto-save files are written in the
|
|
|
4305 same format as a regular save would use.
|
|
|
4306 */ );
|
|
|
4307 Vauto_save_file_format = Qt;
|
|
|
4308
|
|
|
4309 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4310 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4311 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4312 HANDLER.
|
|
|
4313
|
|
|
4314 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4315 to be handled; the remaining arguments are the arguments that were
|
|
|
4316 passed to that primitive. For example, if you do
|
|
|
4317 (file-exists-p FILENAME)
|
|
|
4318 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4319 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4320 The function `find-file-name-handler' checks this list for a handler
|
|
|
4321 for its argument.
|
|
|
4322 */ );
|
|
|
4323 Vfile_name_handler_alist = Qnil;
|
|
|
4324
|
|
|
4325 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4326 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4327 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4328 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4329 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4330 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4331 */ );
|
|
|
4332 Vafter_insert_file_functions = Qnil;
|
|
|
4333
|
|
|
4334 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4335 &Vwrite_region_annotate_functions /*
|
|
|
4336 A list of functions to be called at the start of `write-region'.
|
|
|
4337 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4338 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4339 effectively inserted at the specified positions of the file being written
|
|
|
4340 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4341 sorted into increasing order. If there are several functions in the list,
|
|
|
4342 the several lists are merged destructively.
|
|
|
4343 */ );
|
|
|
4344 Vwrite_region_annotate_functions = Qnil;
|
|
|
4345
|
|
|
4346 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4347 &Vwrite_region_annotations_so_far /*
|
|
|
4348 When an annotation function is called, this holds the previous annotations.
|
|
|
4349 These are the annotations made by other annotation functions
|
|
|
4350 that were already called. See also `write-region-annotate-functions'.
|
|
|
4351 */ );
|
|
|
4352 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4353
|
|
|
4354 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4355 A list of file name handlers that temporarily should not be used.
|
|
|
4356 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4357 */ );
|
|
|
4358 Vinhibit_file_name_handlers = Qnil;
|
|
|
4359
|
|
|
4360 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4361 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4362 */ );
|
|
|
4363 Vinhibit_file_name_operation = Qnil;
|
|
|
4364
|
|
|
4365 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4366 File name in which we write a list of all auto save file names.
|
|
|
4367 */ );
|
|
|
4368 Vauto_save_list_file_name = Qnil;
|
|
|
4369
|
|
444
|
4370 DEFVAR_LISP ("auto-save-list-file-prefix", &Vauto_save_list_file_prefix /*
|
|
|
4371 Prefix for generating auto-save-list-file-name.
|
|
|
4372 Emacs's pid and the system name will be appended to
|
|
|
4373 this prefix to create a unique file name.
|
|
|
4374 */ );
|
|
|
4375 Vauto_save_list_file_prefix = build_string ("~/.saves-");
|
|
|
4376
|
|
|
4377 DEFVAR_BOOL ("inhibit-auto-save-session", &inhibit_auto_save_session /*
|
|
|
4378 When non-nil, inhibit auto save list file creation.
|
|
|
4379 */ );
|
|
|
4380 inhibit_auto_save_session = 0;
|
|
|
4381
|
|
428
|
4382 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4383 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4384 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4385 This is to prevent you from losing your edits if you accidentally
|
|
|
4386 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4387 Saving the buffer normally turns auto-save back on.
|
|
|
4388 */ );
|
|
|
4389 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4390
|
|
|
4391 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4392 Directory separator character for built-in functions that return file names.
|
|
|
4393 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4394 This variable affects the built-in functions only on Windows,
|
|
|
4395 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4396 what the normal separator is.
|
|
|
4397 */ );
|
|
771
|
4398 Vdirectory_sep_char = make_char (DEFAULT_DIRECTORY_SEP);
|
|
442
|
4399
|
|
|
4400 reinit_vars_of_fileio ();
|
|
428
|
4401 }
|
|
442
|
4402
|
|
|
4403 void
|
|
|
4404 reinit_vars_of_fileio (void)
|
|
|
4405 {
|
|
|
4406 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4407 unique to the process, not to the executable. The danger is that
|
|
|
4408 two different XEmacs processes using the same binary on different
|
|
|
4409 machines creating temp files in the same directory will be
|
|
|
4410 unlucky enough to have the same pid. If we randomize using
|
|
|
4411 process startup time, then in practice they will be unlikely to
|
|
|
4412 collide. We use the microseconds field so that scripts that start
|
|
|
4413 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4414 chance of collision. */
|
|
|
4415 {
|
|
|
4416 EMACS_TIME thyme;
|
|
|
4417
|
|
|
4418 EMACS_GET_TIME (thyme);
|
|
|
4419 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4420 }
|
|
|
4421 }
|
