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