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0
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1 /* Lisp functions pertaining to editing.
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2 Copyright (C) 1985-1987, 1989, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
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4 Copyright (C) 1996 Ben Wing.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Mule 2.0, FSF 19.30. */
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24
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25 /* This file has been Mule-ized. */
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26
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27 /* Hacked on for Mule by Ben Wing, December 1994. */
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28
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29 #include <config.h>
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30 #include "lisp.h"
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31
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32 #include "buffer.h"
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33 #include "commands.h"
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34 #include "events.h" /* for EVENTP */
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35 #include "extents.h"
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36 #include "frame.h"
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37 #include "insdel.h"
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38 #include "window.h"
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377
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39 #include "chartab.h"
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211
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40 #include "line-number.h"
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0
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41
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42 #include "systime.h"
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43 #include "sysdep.h"
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44 #include "syspwd.h"
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398
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45 #include "sysfile.h" /* for getcwd */
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0
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46
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47 /* Some static data, and a function to initialize it for each run */
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48
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49 Lisp_Object Vsystem_name; /* #### - I don't see why this should be */
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50 /* static, either... --Stig */
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51 #if 0 /* XEmacs - this is now dynamic */
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52 /* if at some point it's deemed desirable to
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53 use lisp variables here, then they can be
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54 initialized to nil and then set to their
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55 real values upon the first call to the
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56 functions that generate them. --stig */
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57 Lisp_Object Vuser_real_login_name; /* login name of current user ID */
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58 Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER. */
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59 #endif
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60
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219
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61 /* It's useful to be able to set this as user customization, so we'll
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62 keep it. */
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63 Lisp_Object Vuser_full_name;
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272
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64 EXFUN (Fuser_full_name, 1);
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219
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65
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0
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66 Lisp_Object Qformat;
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67
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68 Lisp_Object Qpoint, Qmark, Qregion_beginning, Qregion_end;
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69
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288
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70 Lisp_Object Quser_files_and_directories;
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71
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0
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72 /* This holds the value of `environ' produced by the previous
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73 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
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74 has never been called. */
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75 static char **environbuf;
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76
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77 void
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78 init_editfns (void)
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79 {
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80 /* Only used in removed code below. */
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272
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81 char *p;
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0
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82
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83 environbuf = 0;
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84
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85 /* Set up system_name even when dumping. */
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86 init_system_name ();
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87
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88 #ifndef CANNOT_DUMP
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89 if (!initialized)
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90 return;
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91 #endif
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92
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272
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93 if ((p = getenv ("NAME")))
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219
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94 /* I don't think it's the right thing to do the ampersand
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95 modification on NAME. Not that it matters anymore... -hniksic */
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398
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96 Vuser_full_name = build_ext_string (p, Qnative);
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219
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97 else
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98 Vuser_full_name = Fuser_full_name (Qnil);
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0
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99 }
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100
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20
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101 DEFUN ("char-to-string", Fchar_to_string, 1, 1, 0, /*
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0
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102 Convert arg CH to a one-character string containing that character.
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20
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103 */
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104 (ch))
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0
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105 {
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106 Bytecount len;
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107 Bufbyte str[MAX_EMCHAR_LEN];
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108
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109 if (EVENTP (ch))
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110 {
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111 Lisp_Object ch2 = Fevent_to_character (ch, Qt, Qnil, Qnil);
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112 if (NILP (ch2))
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113 return
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114 signal_simple_continuable_error
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115 ("character has no ASCII equivalent:", Fcopy_event (ch, Qnil));
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116 ch = ch2;
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117 }
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118
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119 CHECK_CHAR_COERCE_INT (ch);
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120
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121 len = set_charptr_emchar (str, XCHAR (ch));
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122 return make_string (str, len);
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123 }
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124
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20
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125 DEFUN ("string-to-char", Fstring_to_char, 1, 1, 0, /*
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0
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126 Convert arg STRING to a character, the first character of that string.
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177
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127 An empty string will return the constant `nil'.
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20
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128 */
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129 (str))
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0
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130 {
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398
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131 Lisp_String *p;
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0
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132 CHECK_STRING (str);
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133
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134 p = XSTRING (str);
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135 if (string_length (p) != 0)
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149
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136 return make_char (string_char (p, 0));
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177
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137 else
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138 /* This used to return Qzero. That is broken, broken, broken. */
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139 /* It might be kinder to signal an error directly. -slb */
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140 return Qnil;
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0
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141 }
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142
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143
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144 static Lisp_Object
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145 buildmark (Bufpos val, Lisp_Object buffer)
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146 {
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272
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147 Lisp_Object mark = Fmake_marker ();
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0
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148 Fset_marker (mark, make_int (val), buffer);
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149 return mark;
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150 }
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151
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20
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152 DEFUN ("point", Fpoint, 0, 1, 0, /*
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0
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153 Return value of point, as an integer.
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154 Beginning of buffer is position (point-min).
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155 If BUFFER is nil, the current buffer is assumed.
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20
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156 */
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157 (buffer))
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0
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158 {
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153
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159 struct buffer *b = decode_buffer (buffer, 1);
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160 return make_int (BUF_PT (b));
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0
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161 }
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162
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20
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163 DEFUN ("point-marker", Fpoint_marker, 0, 2, 0, /*
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0
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164 Return value of point, as a marker object.
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165 This marker is a copy; you may modify it with reckless abandon.
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166 If optional argument DONT-COPY-P is non-nil, then it returns the real
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167 point-marker; modifying the position of this marker will move point.
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168 It is illegal to change the buffer of it, or make it point nowhere.
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169 If BUFFER is nil, the current buffer is assumed.
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20
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170 */
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171 (dont_copy_p, buffer))
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0
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172 {
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173 struct buffer *b = decode_buffer (buffer, 1);
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174 if (NILP (dont_copy_p))
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175 return Fcopy_marker (b->point_marker, Qnil);
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219
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176 else
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177 return b->point_marker;
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0
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178 }
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179
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180 /* The following two functions end up being identical but it's
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181 cleaner to declare them separately. */
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182
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183 Bufpos
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184 bufpos_clip_to_bounds (Bufpos lower, Bufpos num, Bufpos upper)
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185 {
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272
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186 return (num < lower ? lower :
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187 num > upper ? upper :
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188 num);
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0
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189 }
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190
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191 Bytind
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192 bytind_clip_to_bounds (Bytind lower, Bytind num, Bytind upper)
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193 {
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272
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194 return (num < lower ? lower :
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195 num > upper ? upper :
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196 num);
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0
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197 }
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198
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199 /*
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200 * Chuck says:
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201 * There is no absolute way to determine if goto-char is the function
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202 * being run. this-command doesn't work because it is often eval'd
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203 * and this-command ends up set to eval-expression. So this flag gets
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204 * added for now.
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205 *
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206 * Jamie thinks he's wrong, but we'll leave this in for now.
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207 */
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208 int atomic_extent_goto_char_p;
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209
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20
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210 DEFUN ("goto-char", Fgoto_char, 1, 2, "NGoto char: ", /*
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0
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211 Set point to POSITION, a number or marker.
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212 Beginning of buffer is position (point-min), end is (point-max).
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213 If BUFFER is nil, the current buffer is assumed.
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214 Return value of POSITION, as an integer.
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20
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215 */
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216 (position, buffer))
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0
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217 {
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218 struct buffer *b = decode_buffer (buffer, 1);
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219 Bufpos n = get_buffer_pos_char (b, position, GB_COERCE_RANGE);
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220 BUF_SET_PT (b, n);
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221 atomic_extent_goto_char_p = 1;
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149
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222 return make_int (n);
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0
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223 }
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224
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225 static Lisp_Object
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226 region_limit (int beginningp, struct buffer *b)
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227 {
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228 Lisp_Object m;
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229
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230 #if 0 /* FSFmacs */
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231 if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive)
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232 && NILP (b->mark_active))
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233 Fsignal (Qmark_inactive, Qnil);
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234 #endif
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235 m = Fmarker_position (b->mark);
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236 if (NILP (m)) error ("There is no region now");
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237 if (!!(BUF_PT (b) < XINT (m)) == !!beginningp)
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149
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238 return make_int (BUF_PT (b));
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0
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239 else
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149
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240 return m;
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0
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241 }
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242
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20
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243 DEFUN ("region-beginning", Fregion_beginning, 0, 1, 0, /*
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153
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244 Return position of beginning of region in BUFFER, as an integer.
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0
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245 If BUFFER is nil, the current buffer is assumed.
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20
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246 */
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247 (buffer))
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0
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248 {
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153
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249 return region_limit (1, decode_buffer (buffer, 1));
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0
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250 }
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251
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20
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252 DEFUN ("region-end", Fregion_end, 0, 1, 0, /*
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153
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253 Return position of end of region in BUFFER, as an integer.
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0
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254 If BUFFER is nil, the current buffer is assumed.
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20
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255 */
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256 (buffer))
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0
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257 {
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149
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258 return region_limit (0, decode_buffer (buffer, 1));
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0
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259 }
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260
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261 /* Whether to use lispm-style active-regions */
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262 int zmacs_regions;
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263
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264 /* Whether the zmacs region is active. This is not per-buffer because
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265 there can be only one active region at a time. #### Now that the
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266 zmacs region are not directly tied to the X selections this may not
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267 necessarily have to be true. */
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268 int zmacs_region_active_p;
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269
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270 int zmacs_region_stays;
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271
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272 Lisp_Object Qzmacs_update_region, Qzmacs_deactivate_region;
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273 Lisp_Object Qzmacs_region_buffer;
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274
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275 void
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276 zmacs_update_region (void)
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277 {
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278 /* This function can GC */
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279 if (zmacs_region_active_p)
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280 call0 (Qzmacs_update_region);
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281 }
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282
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283 void
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284 zmacs_deactivate_region (void)
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285 {
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286 /* This function can GC */
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287 if (zmacs_region_active_p)
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288 call0 (Qzmacs_deactivate_region);
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289 }
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290
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291 Lisp_Object
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292 zmacs_region_buffer (void)
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293 {
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294 if (zmacs_region_active_p)
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295 return call0 (Qzmacs_region_buffer);
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296 else
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297 return Qnil;
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298 }
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299
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20
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300 DEFUN ("mark-marker", Fmark_marker, 0, 2, 0, /*
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0
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301 Return this buffer's mark, as a marker object.
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302 If `zmacs-regions' is true, then this returns nil unless the region is
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303 currently in the active (highlighted) state. If optional argument FORCE
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304 is t, this returns the mark (if there is one) regardless of the zmacs-region
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305 state. You should *generally* not use the mark unless the region is active,
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306 if the user has expressed a preference for the zmacs-region model.
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307 Watch out! Moving this marker changes the mark position.
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308 If you set the marker not to point anywhere, the buffer will have no mark.
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309 If BUFFER is nil, the current buffer is assumed.
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20
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310 */
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311 (force, buffer))
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0
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312 {
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313 struct buffer *b = decode_buffer (buffer, 1);
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314 if (! zmacs_regions || zmacs_region_active_p || !NILP (force))
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315 return b->mark;
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316 return Qnil;
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317 }
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318
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319
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219
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320 /* The saved object is a cons:
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0
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321
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219
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322 (COPY-OF-POINT-MARKER . COPY-OF-MARK)
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0
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323
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219
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324 We used to have another cons for a VISIBLE-P element, which was t
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325 if `(eq (current-buffer) (window-buffer (selected-window)))' but it
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326 was unused for a long time, so I removed it. --hniksic */
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0
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327 Lisp_Object
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328 save_excursion_save (void)
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329 {
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330 struct buffer *b;
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331
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219
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332 /* #### Huh? --hniksic */
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333 /*if (preparing_for_armageddon) return Qnil;*/
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0
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334
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335 #ifdef ERROR_CHECK_BUFPOS
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336 assert (XINT (Fpoint (Qnil)) ==
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337 XINT (Fmarker_position (Fpoint_marker (Qt, Qnil))));
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338 #endif
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339
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219
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340 b = current_buffer;
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0
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341
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219
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342 return noseeum_cons (noseeum_copy_marker (b->point_marker, Qnil),
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343 noseeum_copy_marker (b->mark, Qnil));
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0
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344 }
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345
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346 Lisp_Object
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347 save_excursion_restore (Lisp_Object info)
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348 {
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219
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349 Lisp_Object buffer = Fmarker_buffer (XCAR (info));
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0
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350
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219
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351 /* If buffer being returned to is now deleted, avoid error --
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352 otherwise could get error here while unwinding to top level and
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353 crash. In that case, Fmarker_buffer returns nil now. */
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354 if (!NILP (buffer))
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355 {
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356 struct buffer *buf = XBUFFER (buffer);
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357 struct gcpro gcpro1;
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358 GCPRO1 (info);
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359 set_buffer_internal (buf);
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360 Fgoto_char (XCAR (info), buffer);
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361 Fset_marker (buf->mark, XCDR (info), buffer);
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0
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362
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363 #if 0 /* We used to make the current buffer visible in the selected window
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364 if that was true previously. That avoids some anomalies.
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365 But it creates others, and it wasn't documented, and it is simpler
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366 and cleaner never to alter the window/buffer connections. */
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219
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367 /* I'm certain some code somewhere depends on this behavior. --jwz */
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368 /* Even if it did, it certainly doesn't matter anymore, because
|
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380
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369 this has been the behavior for countless XEmacs releases
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219
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370 now. --hniksic */
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371 if (visible
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372 && (current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)))
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373 switch_to_buffer (Fcurrent_buffer (), Qnil);
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0
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374 #endif
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375
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219
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376 UNGCPRO;
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377 }
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378
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0
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379 /* Free all the junk we allocated, so that a `save-excursion' comes
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380 for free in terms of GC junk. */
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381 free_marker (XMARKER (XCAR (info)));
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219
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382 free_marker (XMARKER (XCDR (info)));
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|
0
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383 free_cons (XCONS (info));
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384 return Qnil;
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|
385 }
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386
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|
20
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387 DEFUN ("save-excursion", Fsave_excursion, 0, UNEVALLED, 0, /*
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|
0
|
388 Save point, mark, and current buffer; execute BODY; restore those things.
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|
|
389 Executes BODY just like `progn'.
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|
|
390 The values of point, mark and the current buffer are restored
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|
|
391 even in case of abnormal exit (throw or error).
|
|
20
|
392 */
|
|
|
393 (args))
|
|
0
|
394 {
|
|
|
395 /* This function can GC */
|
|
|
396 int speccount = specpdl_depth ();
|
|
|
397
|
|
|
398 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
185
|
399
|
|
0
|
400 return unbind_to (speccount, Fprogn (args));
|
|
|
401 }
|
|
161
|
402
|
|
|
403 Lisp_Object
|
|
169
|
404 save_current_buffer_restore (Lisp_Object buffer)
|
|
161
|
405 {
|
|
|
406 struct buffer *buf = XBUFFER (buffer);
|
|
219
|
407 /* Avoid signaling an error if the buffer is no longer alive. This
|
|
|
408 is for consistency with save-excursion. */
|
|
272
|
409 if (BUFFER_LIVE_P (buf))
|
|
|
410 set_buffer_internal (buf);
|
|
161
|
411 return Qnil;
|
|
|
412 }
|
|
|
413
|
|
|
414 DEFUN ("save-current-buffer", Fsave_current_buffer, 0, UNEVALLED, 0, /*
|
|
|
415 Save the current buffer; execute BODY; restore the current buffer.
|
|
|
416 Executes BODY just like `progn'.
|
|
|
417 */
|
|
169
|
418 (args))
|
|
161
|
419 {
|
|
|
420 /* This function can GC */
|
|
|
421 int speccount = specpdl_depth ();
|
|
|
422
|
|
|
423 record_unwind_protect (save_current_buffer_restore, Fcurrent_buffer ());
|
|
|
424
|
|
|
425 return unbind_to (speccount, Fprogn (args));
|
|
|
426 }
|
|
0
|
427
|
|
272
|
428 DEFUN ("buffer-size", Fbuffer_size, 0, 1, 0, /*
|
|
0
|
429 Return the number of characters in BUFFER.
|
|
|
430 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
431 */
|
|
|
432 (buffer))
|
|
0
|
433 {
|
|
|
434 struct buffer *b = decode_buffer (buffer, 1);
|
|
153
|
435 return make_int (BUF_SIZE (b));
|
|
0
|
436 }
|
|
|
437
|
|
20
|
438 DEFUN ("point-min", Fpoint_min, 0, 1, 0, /*
|
|
0
|
439 Return the minimum permissible value of point in BUFFER.
|
|
398
|
440 This is 1, unless narrowing (a buffer restriction)
|
|
|
441 is in effect, in which case it may be greater.
|
|
0
|
442 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
443 */
|
|
|
444 (buffer))
|
|
0
|
445 {
|
|
|
446 struct buffer *b = decode_buffer (buffer, 1);
|
|
153
|
447 return make_int (BUF_BEGV (b));
|
|
0
|
448 }
|
|
|
449
|
|
20
|
450 DEFUN ("point-min-marker", Fpoint_min_marker, 0, 1, 0, /*
|
|
0
|
451 Return a marker to the minimum permissible value of point in BUFFER.
|
|
398
|
452 This is the beginning, unless narrowing (a buffer restriction)
|
|
|
453 is in effect, in which case it may be greater.
|
|
0
|
454 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
455 */
|
|
|
456 (buffer))
|
|
0
|
457 {
|
|
|
458 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
459 return buildmark (BUF_BEGV (b), make_buffer (b));
|
|
|
460 }
|
|
|
461
|
|
20
|
462 DEFUN ("point-max", Fpoint_max, 0, 1, 0, /*
|
|
0
|
463 Return the maximum permissible value of point in BUFFER.
|
|
|
464 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
|
|
398
|
465 is in effect, in which case it may be less.
|
|
0
|
466 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
467 */
|
|
|
468 (buffer))
|
|
0
|
469 {
|
|
153
|
470 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
471 return make_int (BUF_ZV (b));
|
|
0
|
472 }
|
|
|
473
|
|
20
|
474 DEFUN ("point-max-marker", Fpoint_max_marker, 0, 1, 0, /*
|
|
398
|
475 Return a marker to the maximum permissible value of point in BUFFER.
|
|
0
|
476 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
|
|
398
|
477 is in effect, in which case it may be less.
|
|
0
|
478 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
479 */
|
|
|
480 (buffer))
|
|
0
|
481 {
|
|
|
482 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
483 return buildmark (BUF_ZV (b), make_buffer (b));
|
|
|
484 }
|
|
|
485
|
|
20
|
486 DEFUN ("following-char", Ffollowing_char, 0, 1, 0, /*
|
|
78
|
487 Return the character following point.
|
|
0
|
488 At the end of the buffer or accessible region, return 0.
|
|
|
489 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
490 */
|
|
|
491 (buffer))
|
|
0
|
492 {
|
|
|
493 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
494 if (BUF_PT (b) >= BUF_ZV (b))
|
|
153
|
495 return Qzero; /* #### Gag me! */
|
|
0
|
496 else
|
|
153
|
497 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b)));
|
|
0
|
498 }
|
|
|
499
|
|
20
|
500 DEFUN ("preceding-char", Fpreceding_char, 0, 1, 0, /*
|
|
78
|
501 Return the character preceding point.
|
|
0
|
502 At the beginning of the buffer or accessible region, return 0.
|
|
|
503 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
504 */
|
|
|
505 (buffer))
|
|
0
|
506 {
|
|
|
507 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
508 if (BUF_PT (b) <= BUF_BEGV (b))
|
|
153
|
509 return Qzero; /* #### Gag me! */
|
|
0
|
510 else
|
|
153
|
511 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b) - 1));
|
|
0
|
512 }
|
|
|
513
|
|
20
|
514 DEFUN ("bobp", Fbobp, 0, 1, 0, /*
|
|
272
|
515 Return t if point is at the beginning of the buffer.
|
|
0
|
516 If the buffer is narrowed, this means the beginning of the narrowed part.
|
|
|
517 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
518 */
|
|
|
519 (buffer))
|
|
0
|
520 {
|
|
|
521 struct buffer *b = decode_buffer (buffer, 1);
|
|
78
|
522 return BUF_PT (b) == BUF_BEGV (b) ? Qt : Qnil;
|
|
0
|
523 }
|
|
|
524
|
|
20
|
525 DEFUN ("eobp", Feobp, 0, 1, 0, /*
|
|
272
|
526 Return t if point is at the end of the buffer.
|
|
0
|
527 If the buffer is narrowed, this means the end of the narrowed part.
|
|
|
528 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
529 */
|
|
|
530 (buffer))
|
|
0
|
531 {
|
|
|
532 struct buffer *b = decode_buffer (buffer, 1);
|
|
78
|
533 return BUF_PT (b) == BUF_ZV (b) ? Qt : Qnil;
|
|
0
|
534 }
|
|
|
535
|
|
|
536 int
|
|
|
537 beginning_of_line_p (struct buffer *b, Bufpos pt)
|
|
|
538 {
|
|
272
|
539 return pt <= BUF_BEGV (b) || BUF_FETCH_CHAR (b, pt - 1) == '\n';
|
|
0
|
540 }
|
|
|
541
|
|
|
542
|
|
20
|
543 DEFUN ("bolp", Fbolp, 0, 1, 0, /*
|
|
272
|
544 Return t if point is at the beginning of a line.
|
|
0
|
545 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
546 */
|
|
|
547 (buffer))
|
|
0
|
548 {
|
|
|
549 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
550 return beginning_of_line_p (b, BUF_PT (b)) ? Qt : Qnil;
|
|
|
551 }
|
|
|
552
|
|
20
|
553 DEFUN ("eolp", Feolp, 0, 1, 0, /*
|
|
272
|
554 Return t if point is at the end of a line.
|
|
0
|
555 `End of a line' includes point being at the end of the buffer.
|
|
|
556 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
557 */
|
|
|
558 (buffer))
|
|
0
|
559 {
|
|
|
560 struct buffer *b = decode_buffer (buffer, 1);
|
|
272
|
561 return (BUF_PT (b) == BUF_ZV (b) || BUF_FETCH_CHAR (b, BUF_PT (b)) == '\n')
|
|
|
562 ? Qt : Qnil;
|
|
0
|
563 }
|
|
|
564
|
|
114
|
565 DEFUN ("char-after", Fchar_after, 0, 2, 0, /*
|
|
398
|
566 Return the character at position POS in BUFFER.
|
|
|
567 POS is an integer or a marker.
|
|
0
|
568 If POS is out of range, the value is nil.
|
|
398
|
569 if POS is nil, the value of point is assumed.
|
|
0
|
570 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
571 */
|
|
|
572 (pos, buffer))
|
|
0
|
573 {
|
|
|
574 struct buffer *b = decode_buffer (buffer, 1);
|
|
114
|
575 Bufpos n = (NILP (pos) ? BUF_PT (b) :
|
|
|
576 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD));
|
|
0
|
577
|
|
|
578 if (n < 0 || n == BUF_ZV (b))
|
|
|
579 return Qnil;
|
|
114
|
580 return make_char (BUF_FETCH_CHAR (b, n));
|
|
|
581 }
|
|
|
582
|
|
|
583 DEFUN ("char-before", Fchar_before, 0, 2, 0, /*
|
|
398
|
584 Return the character preceding position POS in BUFFER.
|
|
|
585 POS is an integer or a marker.
|
|
114
|
586 If POS is out of range, the value is nil.
|
|
398
|
587 if POS is nil, the value of point is assumed.
|
|
114
|
588 If BUFFER is nil, the current buffer is assumed.
|
|
|
589 */
|
|
|
590 (pos, buffer))
|
|
|
591 {
|
|
|
592 struct buffer *b = decode_buffer (buffer, 1);
|
|
398
|
593 Bufpos n = (NILP (pos) ? BUF_PT (b) :
|
|
|
594 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD));
|
|
114
|
595
|
|
|
596 n--;
|
|
185
|
597
|
|
114
|
598 if (n < BUF_BEGV (b))
|
|
|
599 return Qnil;
|
|
|
600 return make_char (BUF_FETCH_CHAR (b, n));
|
|
0
|
601 }
|
|
|
602
|
|
|
603
|
|
263
|
604 DEFUN ("temp-directory", Ftemp_directory, 0, 0, 0, /*
|
|
|
605 Return the pathname to the directory to use for temporary files.
|
|
410
|
606 On MS Windows, this is obtained from the TEMP or TMP environment variables,
|
|
263
|
607 defaulting to / if they are both undefined.
|
|
|
608 On Unix it is obtained from TMPDIR, with /tmp as the default
|
|
|
609 */
|
|
|
610 ())
|
|
|
611 {
|
|
|
612 char *tmpdir;
|
|
410
|
613 #if defined(WIN32_NATIVE)
|
|
272
|
614 tmpdir = getenv ("TEMP");
|
|
263
|
615 if (!tmpdir)
|
|
272
|
616 tmpdir = getenv ("TMP");
|
|
263
|
617 if (!tmpdir)
|
|
272
|
618 tmpdir = "/";
|
|
410
|
619 #else /* WIN32_NATIVE */
|
|
272
|
620 tmpdir = getenv ("TMPDIR");
|
|
|
621 if (!tmpdir)
|
|
|
622 tmpdir = "/tmp";
|
|
263
|
623 #endif
|
|
|
624
|
|
398
|
625 return build_ext_string (tmpdir, Qfile_name);
|
|
263
|
626 }
|
|
|
627
|
|
20
|
628 DEFUN ("user-login-name", Fuser_login_name, 0, 1, 0, /*
|
|
0
|
629 Return the name under which the user logged in, as a string.
|
|
|
630 This is based on the effective uid, not the real uid.
|
|
|
631 Also, if the environment variable LOGNAME or USER is set,
|
|
|
632 that determines the value of this function.
|
|
|
633 If the optional argument UID is present, then environment variables are
|
|
|
634 ignored and this function returns the login name for that UID, or nil.
|
|
20
|
635 */
|
|
|
636 (uid))
|
|
0
|
637 {
|
|
294
|
638 char *returned_name;
|
|
398
|
639 uid_t local_uid;
|
|
0
|
640
|
|
|
641 if (!NILP (uid))
|
|
|
642 {
|
|
|
643 CHECK_INT (uid);
|
|
398
|
644 local_uid = XINT (uid);
|
|
|
645 returned_name = user_login_name (&local_uid);
|
|
294
|
646 }
|
|
|
647 else
|
|
|
648 {
|
|
398
|
649 returned_name = user_login_name (NULL);
|
|
294
|
650 }
|
|
|
651 /* #### - I believe this should return nil instead of "unknown" when pw==0
|
|
|
652 pw=0 is indicated by a null return from user_login_name
|
|
|
653 */
|
|
|
654 return returned_name ? build_string (returned_name) : Qnil;
|
|
|
655 }
|
|
|
656
|
|
|
657 /* This function may be called from other C routines when a
|
|
|
658 character string representation of the user_login_name is
|
|
|
659 needed but a Lisp Object is not. The UID is passed by
|
|
|
660 reference. If UID == NULL, then the USER name
|
|
298
|
661 for the user running XEmacs will be returned. This
|
|
294
|
662 corresponds to a nil argument to Fuser_login_name.
|
|
|
663 */
|
|
|
664 char*
|
|
398
|
665 user_login_name (uid_t *uid)
|
|
294
|
666 {
|
|
|
667 /* uid == NULL to return name of this user */
|
|
|
668 if (uid != NULL)
|
|
|
669 {
|
|
398
|
670 struct passwd *pw = getpwuid (*uid);
|
|
294
|
671 return pw ? pw->pw_name : NULL;
|
|
0
|
672 }
|
|
|
673 else
|
|
|
674 {
|
|
|
675 /* #### - when euid != uid, then LOGNAME and USER are leftovers from the
|
|
|
676 old environment (I site observed behavior on sunos and linux), so the
|
|
|
677 environment variables should be disregarded in that case. --Stig */
|
|
272
|
678 char *user_name = getenv ("LOGNAME");
|
|
0
|
679 if (!user_name)
|
|
272
|
680 user_name = getenv (
|
|
410
|
681 #ifdef WIN32_NATIVE
|
|
272
|
682 "USERNAME" /* it's USERNAME on NT */
|
|
|
683 #else
|
|
|
684 "USER"
|
|
|
685 #endif
|
|
|
686 );
|
|
0
|
687 if (user_name)
|
|
294
|
688 return (user_name);
|
|
0
|
689 else
|
|
294
|
690 {
|
|
398
|
691 struct passwd *pw = getpwuid (geteuid ());
|
|
410
|
692 #ifdef CYGWIN
|
|
294
|
693 /* Since the Cygwin environment may not have an /etc/passwd,
|
|
|
694 return "unknown" instead of the null if the username
|
|
|
695 cannot be determined.
|
|
|
696 */
|
|
|
697 return pw ? pw->pw_name : "unknown";
|
|
|
698 #else
|
|
|
699 /* For all but Cygwin return NULL (nil) */
|
|
|
700 return pw ? pw->pw_name : NULL;
|
|
|
701 #endif
|
|
|
702 }
|
|
0
|
703 }
|
|
|
704 }
|
|
|
705
|
|
20
|
706 DEFUN ("user-real-login-name", Fuser_real_login_name, 0, 0, 0, /*
|
|
0
|
707 Return the name of the user's real uid, as a string.
|
|
|
708 This ignores the environment variables LOGNAME and USER, so it differs from
|
|
|
709 `user-login-name' when running under `su'.
|
|
20
|
710 */
|
|
|
711 ())
|
|
0
|
712 {
|
|
272
|
713 struct passwd *pw = getpwuid (getuid ());
|
|
0
|
714 /* #### - I believe this should return nil instead of "unknown" when pw==0 */
|
|
|
715
|
|
|
716 Lisp_Object tem = build_string (pw ? pw->pw_name : "unknown");/* no gettext */
|
|
153
|
717 return tem;
|
|
0
|
718 }
|
|
|
719
|
|
20
|
720 DEFUN ("user-uid", Fuser_uid, 0, 0, 0, /*
|
|
0
|
721 Return the effective uid of Emacs, as an integer.
|
|
20
|
722 */
|
|
|
723 ())
|
|
0
|
724 {
|
|
|
725 return make_int (geteuid ());
|
|
|
726 }
|
|
|
727
|
|
20
|
728 DEFUN ("user-real-uid", Fuser_real_uid, 0, 0, 0, /*
|
|
0
|
729 Return the real uid of Emacs, as an integer.
|
|
20
|
730 */
|
|
|
731 ())
|
|
0
|
732 {
|
|
|
733 return make_int (getuid ());
|
|
|
734 }
|
|
|
735
|
|
20
|
736 DEFUN ("user-full-name", Fuser_full_name, 0, 1, 0, /*
|
|
0
|
737 Return the full name of the user logged in, as a string.
|
|
|
738 If the optional argument USER is given, then the full name for that
|
|
|
739 user is returned, or nil. USER may be either a login name or a uid.
|
|
219
|
740
|
|
|
741 If USER is nil, and `user-full-name' contains a string, the
|
|
|
742 value of `user-full-name' is returned.
|
|
20
|
743 */
|
|
|
744 (user))
|
|
0
|
745 {
|
|
219
|
746 Lisp_Object user_name;
|
|
0
|
747 struct passwd *pw = NULL;
|
|
|
748 Lisp_Object tem;
|
|
380
|
749 const char *p, *q;
|
|
185
|
750
|
|
219
|
751 if (NILP (user) && STRINGP (Vuser_full_name))
|
|
|
752 return Vuser_full_name;
|
|
|
753
|
|
|
754 user_name = (STRINGP (user) ? user : Fuser_login_name (user));
|
|
163
|
755 if (!NILP (user_name)) /* nil when nonexistent UID passed as arg */
|
|
0
|
756 {
|
|
398
|
757 const char *user_name_ext;
|
|
185
|
758
|
|
0
|
759 /* Fuck me. getpwnam() can call select() and (under IRIX at least)
|
|
|
760 things get wedged if a SIGIO arrives during this time. */
|
|
398
|
761 TO_EXTERNAL_FORMAT (LISP_STRING, user_name,
|
|
|
762 C_STRING_ALLOCA, user_name_ext,
|
|
|
763 Qnative);
|
|
0
|
764 slow_down_interrupts ();
|
|
163
|
765 pw = (struct passwd *) getpwnam (user_name_ext);
|
|
0
|
766 speed_up_interrupts ();
|
|
|
767 }
|
|
|
768
|
|
|
769 /* #### - Stig sez: this should return nil instead of "unknown" when pw==0 */
|
|
|
770 /* Ben sez: bad idea because it's likely to break something */
|
|
|
771 #ifndef AMPERSAND_FULL_NAME
|
|
400
|
772 p = pw ? USER_FULL_NAME : "unknown"; /* don't gettext */
|
|
272
|
773 q = strchr (p, ',');
|
|
0
|
774 #else
|
|
400
|
775 p = pw ? USER_FULL_NAME : "unknown"; /* don't gettext */
|
|
272
|
776 q = strchr (p, ',');
|
|
0
|
777 #endif
|
|
|
778 tem = ((!NILP (user) && !pw)
|
|
|
779 ? Qnil
|
|
272
|
780 : make_ext_string ((Extbyte *) p, (q ? q - p : strlen (p)),
|
|
398
|
781 Qnative));
|
|
0
|
782
|
|
|
783 #ifdef AMPERSAND_FULL_NAME
|
|
|
784 if (!NILP (tem))
|
|
|
785 {
|
|
14
|
786 p = (char *) XSTRING_DATA (tem);
|
|
0
|
787 q = strchr (p, '&');
|
|
|
788 /* Substitute the login name for the &, upcasing the first character. */
|
|
|
789 if (q)
|
|
|
790 {
|
|
163
|
791 char *r = (char *) alloca (strlen (p) + XSTRING_LENGTH (user_name) + 1);
|
|
0
|
792 memcpy (r, p, q - p);
|
|
|
793 r[q - p] = 0;
|
|
163
|
794 strcat (r, (char *) XSTRING_DATA (user_name));
|
|
0
|
795 /* #### current_buffer dependency! */
|
|
|
796 r[q - p] = UPCASE (current_buffer, r[q - p]);
|
|
|
797 strcat (r, q + 1);
|
|
|
798 tem = build_string (r);
|
|
|
799 }
|
|
|
800 }
|
|
|
801 #endif /* AMPERSAND_FULL_NAME */
|
|
|
802
|
|
153
|
803 return tem;
|
|
0
|
804 }
|
|
|
805
|
|
398
|
806 static Extbyte *cached_home_directory;
|
|
288
|
807
|
|
|
808 void
|
|
|
809 uncache_home_directory (void)
|
|
|
810 {
|
|
|
811 cached_home_directory = NULL; /* in some cases, this may cause the leaking
|
|
|
812 of a few bytes */
|
|
|
813 }
|
|
|
814
|
|
404
|
815 /* !!#### not Mule correct. */
|
|
|
816
|
|
386
|
817 /* Returns the home directory, in external format */
|
|
398
|
818 Extbyte *
|
|
288
|
819 get_home_directory (void)
|
|
|
820 {
|
|
404
|
821 /* !!#### this is hopelessly bogus. Rule #1: Do not make any assumptions
|
|
|
822 about what format an external string is in. Could be Unicode, for all
|
|
|
823 we know, and then all the operations below are totally bogus.
|
|
|
824 Instead, convert all data to internal format *right* at the juncture
|
|
|
825 between XEmacs and the outside world, the very moment we first get
|
|
|
826 the data. --ben */
|
|
288
|
827 int output_home_warning = 0;
|
|
|
828
|
|
|
829 if (cached_home_directory == NULL)
|
|
|
830 {
|
|
398
|
831 if ((cached_home_directory = (Extbyte *) getenv("HOME")) == NULL)
|
|
288
|
832 {
|
|
410
|
833 #if defined(WIN32_NATIVE)
|
|
398
|
834 char *homedrive, *homepath;
|
|
380
|
835
|
|
288
|
836 if ((homedrive = getenv("HOMEDRIVE")) != NULL &&
|
|
|
837 (homepath = getenv("HOMEPATH")) != NULL)
|
|
|
838 {
|
|
|
839 cached_home_directory =
|
|
398
|
840 (Extbyte *) xmalloc (strlen (homedrive) +
|
|
|
841 strlen (homepath) + 1);
|
|
|
842 sprintf((char *) cached_home_directory, "%s%s",
|
|
|
843 homedrive,
|
|
|
844 homepath);
|
|
288
|
845 }
|
|
|
846 else
|
|
|
847 {
|
|
404
|
848 # if 0 /* changed by ben. This behavior absolutely stinks, and the
|
|
|
849 possibility being addressed here occurs quite commonly.
|
|
|
850 Using the current directory makes absolutely no sense. */
|
|
288
|
851 /*
|
|
|
852 * Use the current directory.
|
|
|
853 * This preserves the existing XEmacs behavior, but is different
|
|
|
854 * from NT Emacs.
|
|
|
855 */
|
|
|
856 if (initial_directory[0] != '\0')
|
|
|
857 {
|
|
400
|
858 cached_home_directory = (Extbyte*) initial_directory;
|
|
288
|
859 }
|
|
|
860 else
|
|
|
861 {
|
|
|
862 /* This will probably give the wrong value */
|
|
400
|
863 cached_home_directory = (Extbyte*) getcwd (NULL, 0);
|
|
288
|
864 }
|
|
|
865 # else
|
|
|
866 /*
|
|
|
867 * This is NT Emacs behavior
|
|
|
868 */
|
|
398
|
869 cached_home_directory = (Extbyte *) "C:\\";
|
|
288
|
870 output_home_warning = 1;
|
|
|
871 # endif
|
|
|
872 }
|
|
410
|
873 #else /* !WIN32_NATIVE */
|
|
288
|
874 /*
|
|
|
875 * Unix, typically.
|
|
|
876 * Using "/" isn't quite right, but what should we do?
|
|
|
877 * We probably should try to extract pw_dir from /etc/passwd,
|
|
|
878 * before falling back to this.
|
|
|
879 */
|
|
398
|
880 cached_home_directory = (Extbyte *) "/";
|
|
288
|
881 output_home_warning = 1;
|
|
410
|
882 #endif /* !WIN32_NATIVE */
|
|
288
|
883 }
|
|
|
884 if (initialized && output_home_warning)
|
|
|
885 {
|
|
386
|
886 warn_when_safe (Quser_files_and_directories, Qwarning, "\n"
|
|
298
|
887 " XEmacs was unable to determine a good value for the user's $HOME\n"
|
|
288
|
888 " directory, and will be using the value:\n"
|
|
|
889 " %s\n"
|
|
|
890 " This is probably incorrect.",
|
|
386
|
891 cached_home_directory
|
|
|
892 );
|
|
288
|
893 }
|
|
|
894 }
|
|
386
|
895 return cached_home_directory;
|
|
288
|
896 }
|
|
|
897
|
|
|
898 DEFUN ("user-home-directory", Fuser_home_directory, 0, 0, 0, /*
|
|
|
899 Return the user's home directory, as a string.
|
|
|
900 */
|
|
|
901 ())
|
|
|
902 {
|
|
398
|
903 Extbyte *path = get_home_directory ();
|
|
288
|
904
|
|
386
|
905 return path == NULL ? Qnil :
|
|
|
906 Fexpand_file_name (Fsubstitute_in_file_name
|
|
398
|
907 (build_ext_string ((char *) path, Qfile_name)),
|
|
386
|
908 Qnil);
|
|
288
|
909 }
|
|
|
910
|
|
20
|
911 DEFUN ("system-name", Fsystem_name, 0, 0, 0, /*
|
|
0
|
912 Return the name of the machine you are running on, as a string.
|
|
20
|
913 */
|
|
|
914 ())
|
|
0
|
915 {
|
|
153
|
916 return Fcopy_sequence (Vsystem_name);
|
|
0
|
917 }
|
|
|
918
|
|
20
|
919 DEFUN ("emacs-pid", Femacs_pid, 0, 0, 0, /*
|
|
0
|
920 Return the process ID of Emacs, as an integer.
|
|
20
|
921 */
|
|
|
922 ())
|
|
0
|
923 {
|
|
|
924 return make_int (getpid ());
|
|
|
925 }
|
|
|
926
|
|
20
|
927 DEFUN ("current-time", Fcurrent_time, 0, 0, 0, /*
|
|
0
|
928 Return the current time, as the number of seconds since 1970-01-01 00:00:00.
|
|
|
929 The time is returned as a list of three integers. The first has the
|
|
|
930 most significant 16 bits of the seconds, while the second has the
|
|
|
931 least significant 16 bits. The third integer gives the microsecond
|
|
|
932 count.
|
|
|
933
|
|
|
934 The microsecond count is zero on systems that do not provide
|
|
|
935 resolution finer than a second.
|
|
20
|
936 */
|
|
|
937 ())
|
|
0
|
938 {
|
|
|
939 EMACS_TIME t;
|
|
|
940
|
|
|
941 EMACS_GET_TIME (t);
|
|
272
|
942 return list3 (make_int ((EMACS_SECS (t) >> 16) & 0xffff),
|
|
|
943 make_int ((EMACS_SECS (t) >> 0) & 0xffff),
|
|
|
944 make_int (EMACS_USECS (t)));
|
|
0
|
945 }
|
|
|
946
|
|
20
|
947 DEFUN ("current-process-time", Fcurrent_process_time, 0, 0, 0, /*
|
|
0
|
948 Return the amount of time used by this XEmacs process so far.
|
|
|
949 The return value is a list of three floating-point numbers, expressing
|
|
|
950 the user, system, and real times used by the process. The user time
|
|
|
951 measures the time actually spent by the CPU executing the code in this
|
|
|
952 process. The system time measures time spent by the CPU executing kernel
|
|
|
953 code on behalf of this process (e.g. I/O requests made by the process).
|
|
|
954
|
|
|
955 Note that the user and system times measure processor time, as opposed
|
|
|
956 to real time, and only accrue when the processor is actually doing
|
|
|
957 something: Time spent in an idle wait (waiting for user events to come
|
|
|
958 in or for I/O on a disk drive or other device to complete) does not
|
|
|
959 count. Thus, the user and system times will often be considerably
|
|
|
960 less than the real time.
|
|
|
961
|
|
|
962 Some systems do not allow the user and system times to be distinguished.
|
|
|
963 In this case, the user time will be the total processor time used by
|
|
|
964 the process, and the system time will be 0.
|
|
|
965
|
|
|
966 Some systems do not allow the real and processor times to be distinguished.
|
|
|
967 In this case, the user and real times will be the same and the system
|
|
|
968 time will be 0.
|
|
20
|
969 */
|
|
|
970 ())
|
|
0
|
971 {
|
|
|
972 double user, sys, real;
|
|
|
973
|
|
|
974 get_process_times (&user, &sys, &real);
|
|
|
975 return list3 (make_float (user), make_float (sys), make_float (real));
|
|
|
976 }
|
|
|
977
|
|
|
978
|
|
272
|
979 int lisp_to_time (Lisp_Object specified_time, time_t *result);
|
|
0
|
980 int
|
|
|
981 lisp_to_time (Lisp_Object specified_time, time_t *result)
|
|
|
982 {
|
|
272
|
983 Lisp_Object high, low;
|
|
|
984
|
|
0
|
985 if (NILP (specified_time))
|
|
|
986 return time (result) != -1;
|
|
272
|
987
|
|
|
988 CHECK_CONS (specified_time);
|
|
|
989 high = XCAR (specified_time);
|
|
|
990 low = XCDR (specified_time);
|
|
|
991 if (CONSP (low))
|
|
|
992 low = XCAR (low);
|
|
|
993 CHECK_INT (high);
|
|
|
994 CHECK_INT (low);
|
|
|
995 *result = (XINT (high) << 16) + (XINT (low) & 0xffff);
|
|
|
996 return *result >> 16 == XINT (high);
|
|
0
|
997 }
|
|
|
998
|
|
272
|
999 Lisp_Object time_to_lisp (time_t the_time);
|
|
0
|
1000 Lisp_Object
|
|
|
1001 time_to_lisp (time_t the_time)
|
|
|
1002 {
|
|
|
1003 unsigned int item = (unsigned int) the_time;
|
|
|
1004 return Fcons (make_int (item >> 16), make_int (item & 0xffff));
|
|
|
1005 }
|
|
|
1006
|
|
398
|
1007 size_t emacs_strftime (char *string, size_t max, const char *format,
|
|
|
1008 const struct tm *tm);
|
|
|
1009 static long difftm (const struct tm *a, const struct tm *b);
|
|
0
|
1010
|
|
|
1011
|
|
151
|
1012 DEFUN ("format-time-string", Fformat_time_string, 1, 2, 0, /*
|
|
0
|
1013 Use FORMAT-STRING to format the time TIME.
|
|
|
1014 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from
|
|
151
|
1015 `current-time' and `file-attributes'. If TIME is not specified it
|
|
|
1016 defaults to the current time.
|
|
0
|
1017 FORMAT-STRING may contain %-sequences to substitute parts of the time.
|
|
|
1018 %a is replaced by the abbreviated name of the day of week.
|
|
|
1019 %A is replaced by the full name of the day of week.
|
|
|
1020 %b is replaced by the abbreviated name of the month.
|
|
|
1021 %B is replaced by the full name of the month.
|
|
185
|
1022 %c is a synonym for "%x %X".
|
|
|
1023 %C is a locale-specific synonym, which defaults to "%A, %B %e, %Y" in the C locale.
|
|
0
|
1024 %d is replaced by the day of month, zero-padded.
|
|
185
|
1025 %D is a synonym for "%m/%d/%y".
|
|
0
|
1026 %e is replaced by the day of month, blank-padded.
|
|
185
|
1027 %h is a synonym for "%b".
|
|
0
|
1028 %H is replaced by the hour (00-23).
|
|
|
1029 %I is replaced by the hour (00-12).
|
|
|
1030 %j is replaced by the day of the year (001-366).
|
|
|
1031 %k is replaced by the hour (0-23), blank padded.
|
|
|
1032 %l is replaced by the hour (1-12), blank padded.
|
|
|
1033 %m is replaced by the month (01-12).
|
|
|
1034 %M is replaced by the minute (00-59).
|
|
185
|
1035 %n is a synonym for "\\n".
|
|
0
|
1036 %p is replaced by AM or PM, as appropriate.
|
|
185
|
1037 %r is a synonym for "%I:%M:%S %p".
|
|
|
1038 %R is a synonym for "%H:%M".
|
|
398
|
1039 %s is replaced by the time in seconds since 00:00:00, Jan 1, 1970 (a
|
|
|
1040 nonstandard extension)
|
|
0
|
1041 %S is replaced by the second (00-60).
|
|
185
|
1042 %t is a synonym for "\\t".
|
|
|
1043 %T is a synonym for "%H:%M:%S".
|
|
0
|
1044 %U is replaced by the week of the year (00-53), first day of week is Sunday.
|
|
|
1045 %w is replaced by the day of week (0-6), Sunday is day 0.
|
|
|
1046 %W is replaced by the week of the year (00-53), first day of week is Monday.
|
|
185
|
1047 %x is a locale-specific synonym, which defaults to "%D" in the C locale.
|
|
|
1048 %X is a locale-specific synonym, which defaults to "%T" in the C locale.
|
|
0
|
1049 %y is replaced by the year without century (00-99).
|
|
|
1050 %Y is replaced by the year with century.
|
|
|
1051 %Z is replaced by the time zone abbreviation.
|
|
|
1052
|
|
|
1053 The number of options reflects the `strftime' function.
|
|
|
1054
|
|
|
1055 BUG: If the charset used by the current locale is not ISO 8859-1, the
|
|
|
1056 characters appearing in the day and month names may be incorrect.
|
|
20
|
1057 */
|
|
380
|
1058 (format_string, time_))
|
|
0
|
1059 {
|
|
|
1060 time_t value;
|
|
272
|
1061 size_t size;
|
|
0
|
1062
|
|
|
1063 CHECK_STRING (format_string);
|
|
|
1064
|
|
380
|
1065 if (! lisp_to_time (time_, &value))
|
|
0
|
1066 error ("Invalid time specification");
|
|
|
1067
|
|
|
1068 /* This is probably enough. */
|
|
14
|
1069 size = XSTRING_LENGTH (format_string) * 6 + 50;
|
|
0
|
1070
|
|
|
1071 while (1)
|
|
|
1072 {
|
|
|
1073 char *buf = (char *) alloca (size);
|
|
|
1074 *buf = 1;
|
|
|
1075 if (emacs_strftime (buf, size,
|
|
398
|
1076 (const char *) XSTRING_DATA (format_string),
|
|
0
|
1077 localtime (&value))
|
|
|
1078 || !*buf)
|
|
398
|
1079 return build_ext_string (buf, Qbinary);
|
|
0
|
1080 /* If buffer was too small, make it bigger. */
|
|
|
1081 size *= 2;
|
|
|
1082 }
|
|
|
1083 }
|
|
|
1084
|
|
20
|
1085 DEFUN ("decode-time", Fdecode_time, 0, 1, 0, /*
|
|
0
|
1086 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).
|
|
|
1087 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)
|
|
|
1088 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'
|
|
|
1089 to use the current time. The list has the following nine members:
|
|
|
1090 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which
|
|
|
1091 only some operating systems support. MINUTE is an integer between 0 and 59.
|
|
|
1092 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.
|
|
|
1093 MONTH is an integer between 1 and 12. YEAR is an integer indicating the
|
|
|
1094 four-digit year. DOW is the day of week, an integer between 0 and 6, where
|
|
|
1095 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.
|
|
|
1096 ZONE is an integer indicating the number of seconds east of Greenwich.
|
|
|
1097 \(Note that Common Lisp has different meanings for DOW and ZONE.)
|
|
20
|
1098 */
|
|
|
1099 (specified_time))
|
|
0
|
1100 {
|
|
|
1101 time_t time_spec;
|
|
|
1102 struct tm save_tm;
|
|
|
1103 struct tm *decoded_time;
|
|
|
1104 Lisp_Object list_args[9];
|
|
185
|
1105
|
|
0
|
1106 if (! lisp_to_time (specified_time, &time_spec))
|
|
|
1107 error ("Invalid time specification");
|
|
|
1108
|
|
|
1109 decoded_time = localtime (&time_spec);
|
|
380
|
1110 list_args[0] = make_int (decoded_time->tm_sec);
|
|
|
1111 list_args[1] = make_int (decoded_time->tm_min);
|
|
|
1112 list_args[2] = make_int (decoded_time->tm_hour);
|
|
|
1113 list_args[3] = make_int (decoded_time->tm_mday);
|
|
|
1114 list_args[4] = make_int (decoded_time->tm_mon + 1);
|
|
|
1115 list_args[5] = make_int (decoded_time->tm_year + 1900);
|
|
|
1116 list_args[6] = make_int (decoded_time->tm_wday);
|
|
0
|
1117 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil;
|
|
|
1118
|
|
|
1119 /* Make a copy, in case gmtime modifies the struct. */
|
|
|
1120 save_tm = *decoded_time;
|
|
|
1121 decoded_time = gmtime (&time_spec);
|
|
|
1122 if (decoded_time == 0)
|
|
|
1123 list_args[8] = Qnil;
|
|
|
1124 else
|
|
380
|
1125 list_args[8] = make_int (difftm (&save_tm, decoded_time));
|
|
0
|
1126 return Flist (9, list_args);
|
|
|
1127 }
|
|
|
1128
|
|
|
1129 static void set_time_zone_rule (char *tzstring);
|
|
|
1130
|
|
20
|
1131 DEFUN ("encode-time", Fencode_time, 6, MANY, 0, /*
|
|
0
|
1132 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.
|
|
|
1133 This is the reverse operation of `decode-time', which see.
|
|
|
1134 ZONE defaults to the current time zone rule. This can
|
|
|
1135 be a string (as from `set-time-zone-rule'), or it can be a list
|
|
272
|
1136 \(as from `current-time-zone') or an integer (as from `decode-time')
|
|
0
|
1137 applied without consideration for daylight savings time.
|
|
|
1138
|
|
|
1139 You can pass more than 7 arguments; then the first six arguments
|
|
|
1140 are used as SECOND through YEAR, and the *last* argument is used as ZONE.
|
|
|
1141 The intervening arguments are ignored.
|
|
|
1142 This feature lets (apply 'encode-time (decode-time ...)) work.
|
|
|
1143
|
|
|
1144 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;
|
|
|
1145 for example, a DAY of 0 means the day preceding the given month.
|
|
|
1146 Year numbers less than 100 are treated just like other year numbers.
|
|
149
|
1147 If you want them to stand for years in this century, you must do that yourself.
|
|
20
|
1148 */
|
|
|
1149 (int nargs, Lisp_Object *args))
|
|
0
|
1150 {
|
|
380
|
1151 time_t the_time;
|
|
0
|
1152 struct tm tm;
|
|
|
1153 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil;
|
|
|
1154
|
|
149
|
1155 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */
|
|
|
1156 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */
|
|
|
1157 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */
|
|
|
1158 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */
|
|
|
1159 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */
|
|
|
1160 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */
|
|
0
|
1161
|
|
|
1162 tm.tm_isdst = -1;
|
|
|
1163
|
|
|
1164 if (CONSP (zone))
|
|
219
|
1165 zone = XCAR (zone);
|
|
0
|
1166 if (NILP (zone))
|
|
380
|
1167 the_time = mktime (&tm);
|
|
0
|
1168 else
|
|
|
1169 {
|
|
|
1170 char tzbuf[100];
|
|
|
1171 char *tzstring;
|
|
|
1172 char **oldenv = environ, **newenv;
|
|
185
|
1173
|
|
0
|
1174 if (STRINGP (zone))
|
|
14
|
1175 tzstring = (char *) XSTRING_DATA (zone);
|
|
0
|
1176 else if (INTP (zone))
|
|
|
1177 {
|
|
|
1178 int abszone = abs (XINT (zone));
|
|
|
1179 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0),
|
|
|
1180 abszone / (60*60), (abszone/60) % 60, abszone % 60);
|
|
|
1181 tzstring = tzbuf;
|
|
|
1182 }
|
|
|
1183 else
|
|
|
1184 error ("Invalid time zone specification");
|
|
|
1185
|
|
185
|
1186 /* Set TZ before calling mktime; merely adjusting mktime's returned
|
|
0
|
1187 value doesn't suffice, since that would mishandle leap seconds. */
|
|
|
1188 set_time_zone_rule (tzstring);
|
|
|
1189
|
|
380
|
1190 the_time = mktime (&tm);
|
|
0
|
1191
|
|
|
1192 /* Restore TZ to previous value. */
|
|
|
1193 newenv = environ;
|
|
|
1194 environ = oldenv;
|
|
|
1195 free (newenv);
|
|
|
1196 #ifdef LOCALTIME_CACHE
|
|
|
1197 tzset ();
|
|
|
1198 #endif
|
|
|
1199 }
|
|
|
1200
|
|
380
|
1201 if (the_time == (time_t) -1)
|
|
0
|
1202 error ("Specified time is not representable");
|
|
|
1203
|
|
380
|
1204 return wasteful_word_to_lisp (the_time);
|
|
0
|
1205 }
|
|
|
1206
|
|
20
|
1207 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /*
|
|
0
|
1208 Return the current time, as a human-readable string.
|
|
|
1209 Programs can use this function to decode a time,
|
|
|
1210 since the number of columns in each field is fixed.
|
|
|
1211 The format is `Sun Sep 16 01:03:52 1973'.
|
|
|
1212 If an argument is given, it specifies a time to format
|
|
|
1213 instead of the current time. The argument should have the form:
|
|
|
1214 (HIGH . LOW)
|
|
|
1215 or the form:
|
|
|
1216 (HIGH LOW . IGNORED).
|
|
|
1217 Thus, you can use times obtained from `current-time'
|
|
|
1218 and from `file-attributes'.
|
|
20
|
1219 */
|
|
|
1220 (specified_time))
|
|
0
|
1221 {
|
|
|
1222 time_t value;
|
|
|
1223 char buf[30];
|
|
|
1224 char *tem;
|
|
|
1225
|
|
|
1226 if (! lisp_to_time (specified_time, &value))
|
|
|
1227 value = -1;
|
|
|
1228 tem = (char *) ctime (&value);
|
|
|
1229
|
|
|
1230 strncpy (buf, tem, 24);
|
|
|
1231 buf[24] = 0;
|
|
|
1232
|
|
398
|
1233 return build_ext_string (buf, Qbinary);
|
|
0
|
1234 }
|
|
|
1235
|
|
|
1236 #define TM_YEAR_ORIGIN 1900
|
|
|
1237
|
|
|
1238 /* Yield A - B, measured in seconds. */
|
|
|
1239 static long
|
|
398
|
1240 difftm (const struct tm *a, const struct tm *b)
|
|
0
|
1241 {
|
|
|
1242 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1);
|
|
|
1243 int by = b->tm_year + (TM_YEAR_ORIGIN - 1);
|
|
|
1244 /* Some compilers can't handle this as a single return statement. */
|
|
|
1245 long days = (
|
|
|
1246 /* difference in day of year */
|
|
|
1247 a->tm_yday - b->tm_yday
|
|
|
1248 /* + intervening leap days */
|
|
|
1249 + ((ay >> 2) - (by >> 2))
|
|
|
1250 - (ay/100 - by/100)
|
|
|
1251 + ((ay/100 >> 2) - (by/100 >> 2))
|
|
|
1252 /* + difference in years * 365 */
|
|
|
1253 + (long)(ay-by) * 365
|
|
|
1254 );
|
|
|
1255 return (60*(60*(24*days + (a->tm_hour - b->tm_hour))
|
|
|
1256 + (a->tm_min - b->tm_min))
|
|
|
1257 + (a->tm_sec - b->tm_sec));
|
|
|
1258 }
|
|
|
1259
|
|
20
|
1260 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /*
|
|
0
|
1261 Return the offset and name for the local time zone.
|
|
|
1262 This returns a list of the form (OFFSET NAME).
|
|
|
1263 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).
|
|
|
1264 A negative value means west of Greenwich.
|
|
|
1265 NAME is a string giving the name of the time zone.
|
|
|
1266 If an argument is given, it specifies when the time zone offset is determined
|
|
|
1267 instead of using the current time. The argument should have the form:
|
|
|
1268 (HIGH . LOW)
|
|
|
1269 or the form:
|
|
|
1270 (HIGH LOW . IGNORED).
|
|
|
1271 Thus, you can use times obtained from `current-time'
|
|
|
1272 and from `file-attributes'.
|
|
|
1273
|
|
|
1274 Some operating systems cannot provide all this information to Emacs;
|
|
|
1275 in this case, `current-time-zone' returns a list containing nil for
|
|
|
1276 the data it can't find.
|
|
20
|
1277 */
|
|
|
1278 (specified_time))
|
|
0
|
1279 {
|
|
|
1280 time_t value;
|
|
272
|
1281 struct tm *t = NULL;
|
|
0
|
1282
|
|
|
1283 if (lisp_to_time (specified_time, &value)
|
|
|
1284 && (t = gmtime (&value)) != 0)
|
|
|
1285 {
|
|
272
|
1286 struct tm gmt = *t; /* Make a copy, in case localtime modifies *t. */
|
|
0
|
1287 long offset;
|
|
|
1288 char *s, buf[6];
|
|
|
1289
|
|
|
1290 t = localtime (&value);
|
|
|
1291 offset = difftm (t, &gmt);
|
|
|
1292 s = 0;
|
|
|
1293 #ifdef HAVE_TM_ZONE
|
|
|
1294 if (t->tm_zone)
|
|
|
1295 s = (char *)t->tm_zone;
|
|
|
1296 #else /* not HAVE_TM_ZONE */
|
|
|
1297 #ifdef HAVE_TZNAME
|
|
|
1298 if (t->tm_isdst == 0 || t->tm_isdst == 1)
|
|
|
1299 s = tzname[t->tm_isdst];
|
|
|
1300 #endif
|
|
|
1301 #endif /* not HAVE_TM_ZONE */
|
|
|
1302 if (!s)
|
|
|
1303 {
|
|
|
1304 /* No local time zone name is available; use "+-NNNN" instead. */
|
|
|
1305 int am = (offset < 0 ? -offset : offset) / 60;
|
|
|
1306 sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60);
|
|
|
1307 s = buf;
|
|
|
1308 }
|
|
|
1309 return list2 (make_int (offset), build_string (s));
|
|
|
1310 }
|
|
|
1311 else
|
|
|
1312 return list2 (Qnil, Qnil);
|
|
|
1313 }
|
|
|
1314
|
|
257
|
1315 #ifdef LOCALTIME_CACHE
|
|
|
1316
|
|
|
1317 /* These two values are known to load tz files in buggy implementations,
|
|
|
1318 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2.
|
|
|
1319 Their values shouldn't matter in non-buggy implementations.
|
|
272
|
1320 We don't use string literals for these strings,
|
|
257
|
1321 since if a string in the environment is in readonly
|
|
|
1322 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
|
|
|
1323 See Sun bugs 1113095 and 1114114, ``Timezone routines
|
|
|
1324 improperly modify environment''. */
|
|
|
1325
|
|
|
1326 static char set_time_zone_rule_tz1[] = "TZ=GMT+0";
|
|
|
1327 static char set_time_zone_rule_tz2[] = "TZ=GMT+1";
|
|
|
1328
|
|
|
1329 #endif
|
|
|
1330
|
|
0
|
1331 /* Set the local time zone rule to TZSTRING.
|
|
|
1332 This allocates memory into `environ', which it is the caller's
|
|
|
1333 responsibility to free. */
|
|
|
1334 static void
|
|
|
1335 set_time_zone_rule (char *tzstring)
|
|
|
1336 {
|
|
|
1337 int envptrs;
|
|
|
1338 char **from, **to, **newenv;
|
|
|
1339
|
|
|
1340 for (from = environ; *from; from++)
|
|
|
1341 continue;
|
|
|
1342 envptrs = from - environ + 2;
|
|
|
1343 newenv = to = (char **) xmalloc (envptrs * sizeof (char *)
|
|
|
1344 + (tzstring ? strlen (tzstring) + 4 : 0));
|
|
|
1345 if (tzstring)
|
|
|
1346 {
|
|
|
1347 char *t = (char *) (to + envptrs);
|
|
|
1348 strcpy (t, "TZ=");
|
|
|
1349 strcat (t, tzstring);
|
|
|
1350 *to++ = t;
|
|
|
1351 }
|
|
|
1352
|
|
|
1353 for (from = environ; *from; from++)
|
|
|
1354 if (strncmp (*from, "TZ=", 3) != 0)
|
|
|
1355 *to++ = *from;
|
|
|
1356 *to = 0;
|
|
|
1357
|
|
|
1358 environ = newenv;
|
|
|
1359
|
|
|
1360 #ifdef LOCALTIME_CACHE
|
|
257
|
1361 {
|
|
|
1362 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
|
|
|
1363 "US/Pacific" that loads a tz file, then changes to a value like
|
|
|
1364 "XXX0" that does not load a tz file, and then changes back to
|
|
|
1365 its original value, the last change is (incorrectly) ignored.
|
|
|
1366 Also, if TZ changes twice in succession to values that do
|
|
|
1367 not load a tz file, tzset can dump core (see Sun bug#1225179).
|
|
|
1368 The following code works around these bugs. */
|
|
|
1369
|
|
|
1370 if (tzstring)
|
|
|
1371 {
|
|
|
1372 /* Temporarily set TZ to a value that loads a tz file
|
|
|
1373 and that differs from tzstring. */
|
|
|
1374 char *tz = *newenv;
|
|
|
1375 *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0
|
|
|
1376 ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1);
|
|
|
1377 tzset ();
|
|
|
1378 *newenv = tz;
|
|
|
1379 }
|
|
|
1380 else
|
|
|
1381 {
|
|
|
1382 /* The implied tzstring is unknown, so temporarily set TZ to
|
|
|
1383 two different values that each load a tz file. */
|
|
|
1384 *to = set_time_zone_rule_tz1;
|
|
|
1385 to[1] = 0;
|
|
|
1386 tzset ();
|
|
|
1387 *to = set_time_zone_rule_tz2;
|
|
|
1388 tzset ();
|
|
|
1389 *to = 0;
|
|
|
1390 }
|
|
|
1391
|
|
|
1392 /* Now TZ has the desired value, and tzset can be invoked safely. */
|
|
|
1393 }
|
|
|
1394
|
|
0
|
1395 tzset ();
|
|
|
1396 #endif
|
|
|
1397 }
|
|
|
1398
|
|
20
|
1399 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /*
|
|
0
|
1400 Set the local time zone using TZ, a string specifying a time zone rule.
|
|
|
1401 If TZ is nil, use implementation-defined default time zone information.
|
|
20
|
1402 */
|
|
|
1403 (tz))
|
|
0
|
1404 {
|
|
|
1405 char *tzstring;
|
|
|
1406
|
|
|
1407 if (NILP (tz))
|
|
|
1408 tzstring = 0;
|
|
|
1409 else
|
|
|
1410 {
|
|
|
1411 CHECK_STRING (tz);
|
|
14
|
1412 tzstring = (char *) XSTRING_DATA (tz);
|
|
0
|
1413 }
|
|
|
1414
|
|
|
1415 set_time_zone_rule (tzstring);
|
|
|
1416 if (environbuf)
|
|
|
1417 xfree (environbuf);
|
|
|
1418 environbuf = environ;
|
|
|
1419
|
|
|
1420 return Qnil;
|
|
|
1421 }
|
|
|
1422
|
|
|
1423
|
|
|
1424 void
|
|
|
1425 buffer_insert1 (struct buffer *buf, Lisp_Object arg)
|
|
|
1426 {
|
|
|
1427 /* This function can GC */
|
|
|
1428 struct gcpro gcpro1;
|
|
|
1429 GCPRO1 (arg);
|
|
|
1430 retry:
|
|
|
1431 if (CHAR_OR_CHAR_INTP (arg))
|
|
|
1432 {
|
|
|
1433 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg));
|
|
|
1434 }
|
|
|
1435 else if (STRINGP (arg))
|
|
|
1436 {
|
|
|
1437 buffer_insert_lisp_string (buf, arg);
|
|
|
1438 }
|
|
|
1439 else
|
|
|
1440 {
|
|
|
1441 arg = wrong_type_argument (Qchar_or_string_p, arg);
|
|
|
1442 goto retry;
|
|
|
1443 }
|
|
|
1444 zmacs_region_stays = 0;
|
|
|
1445 UNGCPRO;
|
|
|
1446 }
|
|
|
1447
|
|
|
1448
|
|
|
1449 /* Callers passing one argument to Finsert need not gcpro the
|
|
|
1450 argument "array", since the only element of the array will
|
|
|
1451 not be used after calling insert_emacs_char or insert_lisp_string,
|
|
|
1452 so we don't care if it gets trashed. */
|
|
|
1453
|
|
20
|
1454 DEFUN ("insert", Finsert, 0, MANY, 0, /*
|
|
0
|
1455 Insert the arguments, either strings or characters, at point.
|
|
|
1456 Point moves forward so that it ends up after the inserted text.
|
|
|
1457 Any other markers at the point of insertion remain before the text.
|
|
|
1458 If a string has non-null string-extent-data, new extents will be created.
|
|
20
|
1459 */
|
|
|
1460 (int nargs, Lisp_Object *args))
|
|
0
|
1461 {
|
|
|
1462 /* This function can GC */
|
|
|
1463 REGISTER int argnum;
|
|
|
1464
|
|
|
1465 for (argnum = 0; argnum < nargs; argnum++)
|
|
|
1466 {
|
|
|
1467 buffer_insert1 (current_buffer, args[argnum]);
|
|
|
1468 }
|
|
|
1469
|
|
|
1470 return Qnil;
|
|
|
1471 }
|
|
|
1472
|
|
20
|
1473 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /*
|
|
0
|
1474 Insert strings or characters at point, relocating markers after the text.
|
|
|
1475 Point moves forward so that it ends up after the inserted text.
|
|
|
1476 Any other markers at the point of insertion also end up after the text.
|
|
20
|
1477 */
|
|
|
1478 (int nargs, Lisp_Object *args))
|
|
0
|
1479 {
|
|
|
1480 /* This function can GC */
|
|
|
1481 REGISTER int argnum;
|
|
|
1482 REGISTER Lisp_Object tem;
|
|
|
1483
|
|
|
1484 for (argnum = 0; argnum < nargs; argnum++)
|
|
|
1485 {
|
|
|
1486 tem = args[argnum];
|
|
|
1487 retry:
|
|
|
1488 if (CHAR_OR_CHAR_INTP (tem))
|
|
|
1489 {
|
|
|
1490 buffer_insert_emacs_char_1 (current_buffer, -1,
|
|
|
1491 XCHAR_OR_CHAR_INT (tem),
|
|
|
1492 INSDEL_BEFORE_MARKERS);
|
|
|
1493 }
|
|
|
1494 else if (STRINGP (tem))
|
|
|
1495 {
|
|
|
1496 buffer_insert_lisp_string_1 (current_buffer, -1, tem,
|
|
|
1497 INSDEL_BEFORE_MARKERS);
|
|
|
1498 }
|
|
|
1499 else
|
|
|
1500 {
|
|
|
1501 tem = wrong_type_argument (Qchar_or_string_p, tem);
|
|
|
1502 goto retry;
|
|
|
1503 }
|
|
|
1504 }
|
|
|
1505 zmacs_region_stays = 0;
|
|
|
1506 return Qnil;
|
|
|
1507 }
|
|
|
1508
|
|
20
|
1509 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /*
|
|
0
|
1510 Insert STRING into BUFFER at BUFFER's point.
|
|
|
1511 Point moves forward so that it ends up after the inserted text.
|
|
|
1512 Any other markers at the point of insertion remain before the text.
|
|
|
1513 If a string has non-null string-extent-data, new extents will be created.
|
|
|
1514 BUFFER defaults to the current buffer.
|
|
20
|
1515 */
|
|
|
1516 (string, buffer))
|
|
0
|
1517 {
|
|
153
|
1518 struct buffer *b = decode_buffer (buffer, 1);
|
|
0
|
1519 CHECK_STRING (string);
|
|
153
|
1520 buffer_insert_lisp_string (b, string);
|
|
0
|
1521 zmacs_region_stays = 0;
|
|
|
1522 return Qnil;
|
|
|
1523 }
|
|
|
1524
|
|
|
1525 /* Third argument in FSF is INHERIT:
|
|
|
1526
|
|
203
|
1527 "The optional third arg INHERIT, if non-nil, says to inherit text properties
|
|
0
|
1528 from adjoining text, if those properties are sticky."
|
|
|
1529
|
|
|
1530 Jamie thinks this is bogus. */
|
|
|
1531
|
|
|
1532
|
|
20
|
1533 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /*
|
|
0
|
1534 Insert COUNT (second arg) copies of CHR (first arg).
|
|
|
1535 Point and all markers are affected as in the function `insert'.
|
|
|
1536 COUNT defaults to 1 if omitted.
|
|
|
1537 The optional third arg IGNORED is INHERIT under FSF Emacs.
|
|
|
1538 This is highly bogus, however, and XEmacs always behaves as if
|
|
|
1539 `t' were passed to INHERIT.
|
|
|
1540 The optional fourth arg BUFFER specifies the buffer to insert the
|
|
|
1541 text into. If BUFFER is nil, the current buffer is assumed.
|
|
20
|
1542 */
|
|
|
1543 (chr, count, ignored, buffer))
|
|
0
|
1544 {
|
|
|
1545 /* This function can GC */
|
|
|
1546 REGISTER Bufbyte *string;
|
|
|
1547 REGISTER int slen;
|
|
|
1548 REGISTER int i, j;
|
|
|
1549 REGISTER Bytecount n;
|
|
|
1550 REGISTER Bytecount charlen;
|
|
|
1551 Bufbyte str[MAX_EMCHAR_LEN];
|
|
153
|
1552 struct buffer *b = decode_buffer (buffer, 1);
|
|
0
|
1553 int cou;
|
|
|
1554
|
|
|
1555 CHECK_CHAR_COERCE_INT (chr);
|
|
|
1556 if (NILP (count))
|
|
|
1557 cou = 1;
|
|
|
1558 else
|
|
|
1559 {
|
|
|
1560 CHECK_INT (count);
|
|
|
1561 cou = XINT (count);
|
|
|
1562 }
|
|
|
1563
|
|
|
1564 charlen = set_charptr_emchar (str, XCHAR (chr));
|
|
|
1565 n = cou * charlen;
|
|
|
1566 if (n <= 0)
|
|
|
1567 return Qnil;
|
|
|
1568 slen = min (n, 768);
|
|
185
|
1569 string = alloca_array (Bufbyte, slen);
|
|
0
|
1570 /* Write as many copies of the character into the temp string as will fit. */
|
|
|
1571 for (i = 0; i + charlen <= slen; i += charlen)
|
|
|
1572 for (j = 0; j < charlen; j++)
|
|
|
1573 string[i + j] = str[j];
|
|
|
1574 slen = i;
|
|
|
1575 while (n >= slen)
|
|
|
1576 {
|
|
153
|
1577 buffer_insert_raw_string (b, string, slen);
|
|
0
|
1578 n -= slen;
|
|
|
1579 }
|
|
|
1580 if (n > 0)
|
|
|
1581 #if 0 /* FSFmacs bogosity */
|
|
|
1582 {
|
|
|
1583 if (!NILP (inherit))
|
|
|
1584 insert_and_inherit (string, n);
|
|
|
1585 else
|
|
|
1586 insert (string, n);
|
|
|
1587 }
|
|
|
1588 #else
|
|
153
|
1589 buffer_insert_raw_string (b, string, n);
|
|
0
|
1590 #endif
|
|
|
1591
|
|
|
1592 zmacs_region_stays = 0;
|
|
|
1593 return Qnil;
|
|
|
1594 }
|
|
|
1595
|
|
|
1596
|
|
|
1597 /* Making strings from buffer contents. */
|
|
|
1598
|
|
20
|
1599 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /*
|
|
0
|
1600 Return the contents of part of BUFFER as a string.
|
|
|
1601 The two arguments START and END are character positions;
|
|
|
1602 they can be in either order. If omitted, they default to the beginning
|
|
|
1603 and end of BUFFER, respectively.
|
|
|
1604 If there are duplicable extents in the region, the string remembers
|
|
|
1605 them in its extent data.
|
|
|
1606 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
1607 */
|
|
|
1608 (start, end, buffer))
|
|
0
|
1609 {
|
|
|
1610 /* This function can GC */
|
|
|
1611 Bufpos begv, zv;
|
|
|
1612 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1613
|
|
|
1614 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
|
|
|
1615 return make_string_from_buffer (b, begv, zv - begv);
|
|
|
1616 }
|
|
|
1617
|
|
377
|
1618 /* It might make more sense to name this
|
|
|
1619 `buffer-substring-no-extents', but this name is FSFmacs-compatible,
|
|
|
1620 and what the function does is probably good enough for what the
|
|
|
1621 user-code will typically want to use it for. */
|
|
|
1622 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /*
|
|
|
1623 Return the text from BEG to END, as a string, without copying the extents.
|
|
|
1624 */
|
|
|
1625 (start, end, buffer))
|
|
|
1626 {
|
|
|
1627 /* This function can GC */
|
|
|
1628 Bufpos begv, zv;
|
|
|
1629 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1630
|
|
|
1631 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
|
|
|
1632 return make_string_from_buffer_no_extents (b, begv, zv - begv);
|
|
|
1633 }
|
|
|
1634
|
|
20
|
1635 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /*
|
|
0
|
1636 Insert before point a substring of the contents of buffer BUFFER.
|
|
|
1637 BUFFER may be a buffer or a buffer name.
|
|
|
1638 Arguments START and END are character numbers specifying the substring.
|
|
|
1639 They default to the beginning and the end of BUFFER.
|
|
20
|
1640 */
|
|
|
1641 (buffer, start, end))
|
|
0
|
1642 {
|
|
|
1643 /* This function can GC */
|
|
|
1644 Bufpos b, e;
|
|
|
1645 struct buffer *bp;
|
|
|
1646
|
|
|
1647 bp = XBUFFER (get_buffer (buffer, 1));
|
|
|
1648 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL);
|
|
|
1649
|
|
|
1650 if (b < e)
|
|
|
1651 buffer_insert_from_buffer (current_buffer, bp, b, e - b);
|
|
|
1652
|
|
|
1653 return Qnil;
|
|
|
1654 }
|
|
|
1655
|
|
20
|
1656 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /*
|
|
0
|
1657 Compare two substrings of two buffers; return result as number.
|
|
|
1658 the value is -N if first string is less after N-1 chars,
|
|
|
1659 +N if first string is greater after N-1 chars, or 0 if strings match.
|
|
|
1660 Each substring is represented as three arguments: BUFFER, START and END.
|
|
|
1661 That makes six args in all, three for each substring.
|
|
|
1662
|
|
|
1663 The value of `case-fold-search' in the current buffer
|
|
|
1664 determines whether case is significant or ignored.
|
|
20
|
1665 */
|
|
|
1666 (buffer1, start1, end1, buffer2, start2, end2))
|
|
0
|
1667 {
|
|
|
1668 Bufpos begp1, endp1, begp2, endp2;
|
|
|
1669 REGISTER Charcount len1, len2, length, i;
|
|
|
1670 struct buffer *bp1, *bp2;
|
|
|
1671 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ?
|
|
|
1672 current_buffer->case_canon_table : Qnil);
|
|
|
1673
|
|
|
1674 /* Find the first buffer and its substring. */
|
|
|
1675
|
|
|
1676 bp1 = decode_buffer (buffer1, 1);
|
|
|
1677 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL);
|
|
|
1678
|
|
|
1679 /* Likewise for second substring. */
|
|
|
1680
|
|
|
1681 bp2 = decode_buffer (buffer2, 1);
|
|
|
1682 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL);
|
|
|
1683
|
|
|
1684 len1 = endp1 - begp1;
|
|
|
1685 len2 = endp2 - begp2;
|
|
|
1686 length = len1;
|
|
|
1687 if (len2 < length)
|
|
|
1688 length = len2;
|
|
|
1689
|
|
|
1690 for (i = 0; i < length; i++)
|
|
|
1691 {
|
|
|
1692 Emchar c1 = BUF_FETCH_CHAR (bp1, begp1 + i);
|
|
|
1693 Emchar c2 = BUF_FETCH_CHAR (bp2, begp2 + i);
|
|
|
1694 if (!NILP (trt))
|
|
|
1695 {
|
|
|
1696 c1 = TRT_TABLE_OF (trt, c1);
|
|
|
1697 c2 = TRT_TABLE_OF (trt, c2);
|
|
|
1698 }
|
|
|
1699 if (c1 < c2)
|
|
|
1700 return make_int (- 1 - i);
|
|
|
1701 if (c1 > c2)
|
|
|
1702 return make_int (i + 1);
|
|
|
1703 }
|
|
|
1704
|
|
|
1705 /* The strings match as far as they go.
|
|
|
1706 If one is shorter, that one is less. */
|
|
|
1707 if (length < len1)
|
|
|
1708 return make_int (length + 1);
|
|
|
1709 else if (length < len2)
|
|
|
1710 return make_int (- length - 1);
|
|
|
1711
|
|
|
1712 /* Same length too => they are equal. */
|
|
|
1713 return Qzero;
|
|
|
1714 }
|
|
|
1715
|
|
|
1716
|
|
|
1717 static Lisp_Object
|
|
|
1718 subst_char_in_region_unwind (Lisp_Object arg)
|
|
|
1719 {
|
|
|
1720 XBUFFER (XCAR (arg))->undo_list = XCDR (arg);
|
|
|
1721 return Qnil;
|
|
|
1722 }
|
|
|
1723
|
|
|
1724 static Lisp_Object
|
|
|
1725 subst_char_in_region_unwind_1 (Lisp_Object arg)
|
|
|
1726 {
|
|
|
1727 XBUFFER (XCAR (arg))->filename = XCDR (arg);
|
|
|
1728 return Qnil;
|
|
|
1729 }
|
|
|
1730
|
|
20
|
1731 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /*
|
|
0
|
1732 From START to END, replace FROMCHAR with TOCHAR each time it occurs.
|
|
|
1733 If optional arg NOUNDO is non-nil, don't record this change for undo
|
|
|
1734 and don't mark the buffer as really changed.
|
|
20
|
1735 */
|
|
70
|
1736 (start, end, fromchar, tochar, noundo))
|
|
0
|
1737 {
|
|
|
1738 /* This function can GC */
|
|
|
1739 Bufpos pos, stop;
|
|
|
1740 Emchar fromc, toc;
|
|
|
1741 int mc_count;
|
|
|
1742 struct buffer *buf = current_buffer;
|
|
|
1743 int count = specpdl_depth ();
|
|
|
1744
|
|
|
1745 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
|
|
|
1746 CHECK_CHAR_COERCE_INT (fromchar);
|
|
|
1747 CHECK_CHAR_COERCE_INT (tochar);
|
|
|
1748
|
|
|
1749 fromc = XCHAR (fromchar);
|
|
|
1750 toc = XCHAR (tochar);
|
|
|
1751
|
|
|
1752 /* If we don't want undo, turn off putting stuff on the list.
|
|
|
1753 That's faster than getting rid of things,
|
|
|
1754 and it prevents even the entry for a first change.
|
|
|
1755 Also inhibit locking the file. */
|
|
|
1756 if (!NILP (noundo))
|
|
|
1757 {
|
|
|
1758 record_unwind_protect (subst_char_in_region_unwind,
|
|
|
1759 Fcons (Fcurrent_buffer (), buf->undo_list));
|
|
|
1760 buf->undo_list = Qt;
|
|
|
1761 /* Don't do file-locking. */
|
|
|
1762 record_unwind_protect (subst_char_in_region_unwind_1,
|
|
|
1763 Fcons (Fcurrent_buffer (), buf->filename));
|
|
|
1764 buf->filename = Qnil;
|
|
|
1765 }
|
|
|
1766
|
|
|
1767 mc_count = begin_multiple_change (buf, pos, stop);
|
|
|
1768 while (pos < stop)
|
|
|
1769 {
|
|
|
1770 if (BUF_FETCH_CHAR (buf, pos) == fromc)
|
|
|
1771 {
|
|
|
1772 /* There used to be some code here that set the buffer to
|
|
|
1773 unmodified if NOUNDO was specified and there was only
|
|
|
1774 one change to the buffer since it was last saved.
|
|
|
1775 This is a crock of shit, so I'm not duplicating this
|
|
|
1776 behavior. I think this was left over from when
|
|
|
1777 prepare_to_modify_buffer() actually bumped MODIFF,
|
|
|
1778 so that code was supposed to undo this change. --ben */
|
|
|
1779 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0);
|
|
|
1780
|
|
|
1781 /* If noundo is not nil then we don't mark the buffer as
|
|
|
1782 modified. In reality that needs to happen externally
|
|
|
1783 only. Internally redisplay needs to know that the actual
|
|
|
1784 contents it should be displaying have changed. */
|
|
|
1785 if (!NILP (noundo))
|
|
|
1786 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil);
|
|
|
1787 }
|
|
|
1788 pos++;
|
|
|
1789 }
|
|
|
1790 end_multiple_change (buf, mc_count);
|
|
|
1791
|
|
|
1792 unbind_to (count, Qnil);
|
|
|
1793 return Qnil;
|
|
|
1794 }
|
|
|
1795
|
|
377
|
1796 /* #### Shouldn't this also accept a BUFFER argument, in the good old
|
|
|
1797 XEmacs tradition? */
|
|
20
|
1798 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /*
|
|
377
|
1799 Translate characters from START to END according to TABLE.
|
|
|
1800
|
|
|
1801 If TABLE is a string, the Nth character in it is the mapping for the
|
|
|
1802 character with code N.
|
|
|
1803
|
|
|
1804 If TABLE is a vector, its Nth element is the mapping for character
|
|
|
1805 with code N. The values of elements may be characters, strings, or
|
|
|
1806 nil (nil meaning don't replace.)
|
|
|
1807
|
|
|
1808 If TABLE is a char-table, its elements describe the mapping between
|
|
|
1809 characters and their replacements. The char-table should be of type
|
|
|
1810 `char' or `generic'.
|
|
|
1811
|
|
|
1812 Returns the number of substitutions performed.
|
|
20
|
1813 */
|
|
|
1814 (start, end, table))
|
|
0
|
1815 {
|
|
|
1816 /* This function can GC */
|
|
|
1817 Bufpos pos, stop; /* Limits of the region. */
|
|
377
|
1818 int cnt = 0; /* Number of changes made. */
|
|
0
|
1819 int mc_count;
|
|
|
1820 struct buffer *buf = current_buffer;
|
|
377
|
1821 Emchar oc;
|
|
0
|
1822
|
|
|
1823 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
|
|
|
1824 mc_count = begin_multiple_change (buf, pos, stop);
|
|
377
|
1825 if (STRINGP (table))
|
|
0
|
1826 {
|
|
398
|
1827 Lisp_String *stable = XSTRING (table);
|
|
377
|
1828 Charcount size = string_char_length (stable);
|
|
|
1829 #ifdef MULE
|
|
|
1830 /* Under Mule, string_char(n) is O(n), so for large tables or
|
|
|
1831 large regions it makes sense to create an array of Emchars. */
|
|
|
1832 if (size * (stop - pos) > 65536)
|
|
0
|
1833 {
|
|
377
|
1834 Emchar *etable = alloca_array (Emchar, size);
|
|
|
1835 convert_bufbyte_string_into_emchar_string
|
|
|
1836 (string_data (stable), string_length (stable), etable);
|
|
|
1837 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
|
|
0
|
1838 {
|
|
377
|
1839 if (oc < size)
|
|
|
1840 {
|
|
|
1841 Emchar nc = etable[oc];
|
|
|
1842 if (nc != oc)
|
|
|
1843 {
|
|
|
1844 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1845 ++cnt;
|
|
|
1846 }
|
|
|
1847 }
|
|
|
1848 }
|
|
|
1849 }
|
|
|
1850 else
|
|
|
1851 #endif /* MULE */
|
|
|
1852 {
|
|
|
1853 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
|
|
|
1854 {
|
|
|
1855 if (oc < size)
|
|
|
1856 {
|
|
|
1857 Emchar nc = string_char (stable, oc);
|
|
|
1858 if (nc != oc)
|
|
|
1859 {
|
|
|
1860 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1861 ++cnt;
|
|
|
1862 }
|
|
|
1863 }
|
|
0
|
1864 }
|
|
|
1865 }
|
|
|
1866 }
|
|
377
|
1867 else if (VECTORP (table))
|
|
|
1868 {
|
|
|
1869 Charcount size = XVECTOR_LENGTH (table);
|
|
|
1870 Lisp_Object *vtable = XVECTOR_DATA (table);
|
|
|
1871
|
|
|
1872 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
|
|
|
1873 {
|
|
|
1874 if (oc < size)
|
|
|
1875 {
|
|
|
1876 Lisp_Object replacement = vtable[oc];
|
|
|
1877 retry:
|
|
|
1878 if (CHAR_OR_CHAR_INTP (replacement))
|
|
|
1879 {
|
|
|
1880 Emchar nc = XCHAR_OR_CHAR_INT (replacement);
|
|
|
1881 if (nc != oc)
|
|
|
1882 {
|
|
|
1883 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1884 ++cnt;
|
|
|
1885 }
|
|
|
1886 }
|
|
|
1887 else if (STRINGP (replacement))
|
|
|
1888 {
|
|
|
1889 Charcount incr = XSTRING_CHAR_LENGTH (replacement) - 1;
|
|
|
1890 buffer_delete_range (buf, pos, pos + 1, 0);
|
|
|
1891 buffer_insert_lisp_string_1 (buf, pos, replacement, 0);
|
|
|
1892 pos += incr, stop += incr;
|
|
|
1893 ++cnt;
|
|
|
1894 }
|
|
|
1895 else if (!NILP (replacement))
|
|
|
1896 {
|
|
|
1897 replacement = wrong_type_argument (Qchar_or_string_p, replacement);
|
|
|
1898 goto retry;
|
|
|
1899 }
|
|
|
1900 }
|
|
|
1901 }
|
|
|
1902 }
|
|
|
1903 else if (CHAR_TABLEP (table)
|
|
|
1904 && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC
|
|
|
1905 || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR))
|
|
|
1906 {
|
|
398
|
1907 Lisp_Char_Table *ctable = XCHAR_TABLE (table);
|
|
377
|
1908
|
|
|
1909 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
|
|
|
1910 {
|
|
|
1911 Lisp_Object replacement = get_char_table (oc, ctable);
|
|
|
1912 retry2:
|
|
|
1913 if (CHAR_OR_CHAR_INTP (replacement))
|
|
|
1914 {
|
|
|
1915 Emchar nc = XCHAR_OR_CHAR_INT (replacement);
|
|
|
1916 if (nc != oc)
|
|
|
1917 {
|
|
|
1918 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1919 ++cnt;
|
|
|
1920 }
|
|
|
1921 }
|
|
|
1922 else if (STRINGP (replacement))
|
|
|
1923 {
|
|
|
1924 Charcount incr = XSTRING_CHAR_LENGTH (replacement) - 1;
|
|
|
1925 buffer_delete_range (buf, pos, pos + 1, 0);
|
|
|
1926 buffer_insert_lisp_string_1 (buf, pos, replacement, 0);
|
|
|
1927 pos += incr, stop += incr;
|
|
|
1928 ++cnt;
|
|
|
1929 }
|
|
|
1930 else if (!NILP (replacement))
|
|
|
1931 {
|
|
|
1932 replacement = wrong_type_argument (Qchar_or_string_p, replacement);
|
|
|
1933 goto retry2;
|
|
|
1934 }
|
|
|
1935 }
|
|
|
1936 }
|
|
|
1937 else
|
|
|
1938 dead_wrong_type_argument (Qstringp, table);
|
|
0
|
1939 end_multiple_change (buf, mc_count);
|
|
|
1940
|
|
|
1941 return make_int (cnt);
|
|
|
1942 }
|
|
|
1943
|
|
20
|
1944 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /*
|
|
0
|
1945 Delete the text between point and mark.
|
|
|
1946 When called from a program, expects two arguments,
|
|
|
1947 positions (integers or markers) specifying the stretch to be deleted.
|
|
|
1948 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
1949 */
|
|
|
1950 (b, e, buffer))
|
|
0
|
1951 {
|
|
|
1952 /* This function can GC */
|
|
|
1953 Bufpos start, end;
|
|
|
1954 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1955
|
|
|
1956 get_buffer_range_char (buf, b, e, &start, &end, 0);
|
|
|
1957 buffer_delete_range (buf, start, end, 0);
|
|
|
1958 zmacs_region_stays = 0;
|
|
|
1959 return Qnil;
|
|
|
1960 }
|
|
|
1961
|
|
|
1962 void
|
|
|
1963 widen_buffer (struct buffer *b, int no_clip)
|
|
|
1964 {
|
|
|
1965 if (BUF_BEGV (b) != BUF_BEG (b))
|
|
|
1966 {
|
|
|
1967 clip_changed = 1;
|
|
|
1968 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BI_BUF_BEG (b));
|
|
|
1969 }
|
|
|
1970 if (BUF_ZV (b) != BUF_Z (b))
|
|
|
1971 {
|
|
|
1972 clip_changed = 1;
|
|
|
1973 SET_BOTH_BUF_ZV (b, BUF_Z (b), BI_BUF_Z (b));
|
|
|
1974 }
|
|
|
1975 if (clip_changed)
|
|
|
1976 {
|
|
|
1977 if (!no_clip)
|
|
|
1978 MARK_CLIP_CHANGED;
|
|
|
1979 /* Changing the buffer bounds invalidates any recorded current
|
|
|
1980 column. */
|
|
|
1981 invalidate_current_column ();
|
|
211
|
1982 narrow_line_number_cache (b);
|
|
0
|
1983 }
|
|
|
1984 }
|
|
|
1985
|
|
20
|
1986 DEFUN ("widen", Fwiden, 0, 1, "", /*
|
|
0
|
1987 Remove restrictions (narrowing) from BUFFER.
|
|
|
1988 This allows the buffer's full text to be seen and edited.
|
|
|
1989 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
1990 */
|
|
|
1991 (buffer))
|
|
0
|
1992 {
|
|
|
1993 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1994 widen_buffer (b, 0);
|
|
|
1995 zmacs_region_stays = 0;
|
|
|
1996 return Qnil;
|
|
|
1997 }
|
|
|
1998
|
|
20
|
1999 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /*
|
|
0
|
2000 Restrict editing in BUFFER to the current region.
|
|
|
2001 The rest of the text becomes temporarily invisible and untouchable
|
|
|
2002 but is not deleted; if you save the buffer in a file, the invisible
|
|
|
2003 text is included in the file. \\[widen] makes all visible again.
|
|
|
2004 If BUFFER is nil, the current buffer is assumed.
|
|
|
2005 See also `save-restriction'.
|
|
|
2006
|
|
|
2007 When calling from a program, pass two arguments; positions (integers
|
|
|
2008 or markers) bounding the text that should remain visible.
|
|
20
|
2009 */
|
|
|
2010 (b, e, buffer))
|
|
0
|
2011 {
|
|
|
2012 Bufpos start, end;
|
|
|
2013 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
2014 Bytind bi_start, bi_end;
|
|
|
2015
|
|
|
2016 get_buffer_range_char (buf, b, e, &start, &end, GB_ALLOW_PAST_ACCESSIBLE);
|
|
|
2017 bi_start = bufpos_to_bytind (buf, start);
|
|
|
2018 bi_end = bufpos_to_bytind (buf, end);
|
|
|
2019
|
|
|
2020 SET_BOTH_BUF_BEGV (buf, start, bi_start);
|
|
|
2021 SET_BOTH_BUF_ZV (buf, end, bi_end);
|
|
|
2022 if (BUF_PT (buf) < start)
|
|
|
2023 BUF_SET_PT (buf, start);
|
|
|
2024 if (BUF_PT (buf) > end)
|
|
|
2025 BUF_SET_PT (buf, end);
|
|
|
2026 MARK_CLIP_CHANGED;
|
|
|
2027 /* Changing the buffer bounds invalidates any recorded current column. */
|
|
|
2028 invalidate_current_column ();
|
|
211
|
2029 narrow_line_number_cache (buf);
|
|
0
|
2030 zmacs_region_stays = 0;
|
|
|
2031 return Qnil;
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 Lisp_Object
|
|
|
2035 save_restriction_save (void)
|
|
|
2036 {
|
|
|
2037 Lisp_Object bottom, top;
|
|
|
2038 /* Note: I tried using markers here, but it does not win
|
|
|
2039 because insertion at the end of the saved region
|
|
|
2040 does not advance mh and is considered "outside" the saved region. */
|
|
|
2041 bottom = make_int (BUF_BEGV (current_buffer) - BUF_BEG (current_buffer));
|
|
|
2042 top = make_int (BUF_Z (current_buffer) - BUF_ZV (current_buffer));
|
|
|
2043
|
|
|
2044 return noseeum_cons (Fcurrent_buffer (), noseeum_cons (bottom, top));
|
|
|
2045 }
|
|
|
2046
|
|
|
2047 Lisp_Object
|
|
|
2048 save_restriction_restore (Lisp_Object data)
|
|
|
2049 {
|
|
|
2050 struct buffer *buf;
|
|
|
2051 Charcount newhead, newtail;
|
|
|
2052 Lisp_Object tem;
|
|
|
2053 int local_clip_changed = 0;
|
|
|
2054
|
|
219
|
2055 buf = XBUFFER (XCAR (data));
|
|
0
|
2056 if (!BUFFER_LIVE_P (buf))
|
|
|
2057 {
|
|
219
|
2058 /* someone could have killed the buffer in the meantime ... */
|
|
|
2059 free_cons (XCONS (XCDR (data)));
|
|
|
2060 free_cons (XCONS (data));
|
|
|
2061 return Qnil;
|
|
0
|
2062 }
|
|
219
|
2063 tem = XCDR (data);
|
|
|
2064 newhead = XINT (XCAR (tem));
|
|
|
2065 newtail = XINT (XCDR (tem));
|
|
|
2066
|
|
|
2067 free_cons (XCONS (XCDR (data)));
|
|
|
2068 free_cons (XCONS (data));
|
|
0
|
2069
|
|
|
2070 if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf))
|
|
|
2071 {
|
|
|
2072 newhead = 0;
|
|
|
2073 newtail = 0;
|
|
|
2074 }
|
|
219
|
2075
|
|
0
|
2076 {
|
|
|
2077 Bufpos start, end;
|
|
|
2078 Bytind bi_start, bi_end;
|
|
|
2079
|
|
|
2080 start = BUF_BEG (buf) + newhead;
|
|
|
2081 end = BUF_Z (buf) - newtail;
|
|
185
|
2082
|
|
0
|
2083 bi_start = bufpos_to_bytind (buf, start);
|
|
|
2084 bi_end = bufpos_to_bytind (buf, end);
|
|
|
2085
|
|
|
2086 if (BUF_BEGV (buf) != start)
|
|
|
2087 {
|
|
|
2088 local_clip_changed = 1;
|
|
|
2089 SET_BOTH_BUF_BEGV (buf, start, bi_start);
|
|
211
|
2090 narrow_line_number_cache (buf);
|
|
0
|
2091 }
|
|
|
2092 if (BUF_ZV (buf) != end)
|
|
|
2093 {
|
|
|
2094 local_clip_changed = 1;
|
|
|
2095 SET_BOTH_BUF_ZV (buf, end, bi_end);
|
|
|
2096 }
|
|
|
2097 }
|
|
|
2098 if (local_clip_changed)
|
|
|
2099 MARK_CLIP_CHANGED;
|
|
|
2100
|
|
|
2101 /* If point is outside the new visible range, move it inside. */
|
|
|
2102 BUF_SET_PT (buf,
|
|
|
2103 bufpos_clip_to_bounds (BUF_BEGV (buf),
|
|
|
2104 BUF_PT (buf),
|
|
|
2105 BUF_ZV (buf)));
|
|
|
2106
|
|
|
2107 return Qnil;
|
|
|
2108 }
|
|
|
2109
|
|
20
|
2110 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /*
|
|
0
|
2111 Execute BODY, saving and restoring current buffer's restrictions.
|
|
|
2112 The buffer's restrictions make parts of the beginning and end invisible.
|
|
|
2113 \(They are set up with `narrow-to-region' and eliminated with `widen'.)
|
|
|
2114 This special form, `save-restriction', saves the current buffer's restrictions
|
|
|
2115 when it is entered, and restores them when it is exited.
|
|
|
2116 So any `narrow-to-region' within BODY lasts only until the end of the form.
|
|
|
2117 The old restrictions settings are restored
|
|
|
2118 even in case of abnormal exit (throw or error).
|
|
|
2119
|
|
|
2120 The value returned is the value of the last form in BODY.
|
|
|
2121
|
|
|
2122 `save-restriction' can get confused if, within the BODY, you widen
|
|
|
2123 and then make changes outside the area within the saved restrictions.
|
|
|
2124
|
|
|
2125 Note: if you are using both `save-excursion' and `save-restriction',
|
|
|
2126 use `save-excursion' outermost:
|
|
|
2127 (save-excursion (save-restriction ...))
|
|
20
|
2128 */
|
|
|
2129 (body))
|
|
0
|
2130 {
|
|
|
2131 /* This function can GC */
|
|
|
2132 int speccount = specpdl_depth ();
|
|
|
2133
|
|
|
2134 record_unwind_protect (save_restriction_restore, save_restriction_save ());
|
|
|
2135
|
|
|
2136 return unbind_to (speccount, Fprogn (body));
|
|
|
2137 }
|
|
|
2138
|
|
|
2139
|
|
20
|
2140 DEFUN ("format", Fformat, 1, MANY, 0, /*
|
|
0
|
2141 Format a string out of a control-string and arguments.
|
|
|
2142 The first argument is a control string.
|
|
|
2143 The other arguments are substituted into it to make the result, a string.
|
|
|
2144 It may contain %-sequences meaning to substitute the next argument.
|
|
|
2145 %s means print all objects as-is, using `princ'.
|
|
|
2146 %S means print all objects as s-expressions, using `prin1'.
|
|
|
2147 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex,
|
|
|
2148 %X uppercase hex).
|
|
|
2149 %c means print as a single character.
|
|
|
2150 %f means print as a floating-point number in fixed notation (e.g. 785.200).
|
|
|
2151 %e or %E means print as a floating-point number in scientific notation
|
|
|
2152 (e.g. 7.85200e+03).
|
|
185
|
2153 %g or %G means print as a floating-point number in "pretty format";
|
|
0
|
2154 depending on the number, either %f or %e/%E format will be used, and
|
|
|
2155 trailing zeroes are removed from the fractional part.
|
|
|
2156 The argument used for all but %s and %S must be a number. It will be
|
|
|
2157 converted to an integer or a floating-point number as necessary.
|
|
|
2158
|
|
|
2159 %$ means reposition to read a specific numbered argument; for example,
|
|
|
2160 %3$s would apply the `%s' to the third argument after the control string,
|
|
|
2161 and the next format directive would use the fourth argument, the
|
|
|
2162 following one the fifth argument, etc. (There must be a positive integer
|
|
|
2163 between the % and the $).
|
|
|
2164 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be
|
|
|
2165 specified between the optional repositioning spec and the conversion
|
|
|
2166 character; see below.
|
|
|
2167 An optional minimum field width may be specified after any flag characters
|
|
|
2168 and before the conversion character; it specifies the minimum number of
|
|
|
2169 characters that the converted argument will take up. Padding will be
|
|
|
2170 added on the left (or on the right, if the `-' flag is specified), as
|
|
|
2171 necessary. Padding is done with spaces, or with zeroes if the `0' flag
|
|
|
2172 is specified.
|
|
203
|
2173 If the field width is specified as `*', the field width is assumed to have
|
|
|
2174 been specified as an argument. Any repositioning specification that
|
|
|
2175 would normally specify the argument to be converted will now specify
|
|
|
2176 where to find this field width argument, not where to find the argument
|
|
|
2177 to be converted. If there is no repositioning specification, the normal
|
|
|
2178 next argument is used. The argument to be converted will be the next
|
|
|
2179 argument after the field width argument unless the precision is also
|
|
|
2180 specified as `*' (see below).
|
|
|
2181
|
|
0
|
2182 An optional period character and precision may be specified after any
|
|
|
2183 minimum field width. It specifies the minimum number of digits to
|
|
|
2184 appear in %d, %i, %o, %x, and %X conversions (the number is padded
|
|
|
2185 on the left with zeroes as necessary); the number of digits printed
|
|
|
2186 after the decimal point for %f, %e, and %E conversions; the number
|
|
|
2187 of significant digits printed in %g and %G conversions; and the
|
|
|
2188 maximum number of non-padding characters printed in %s and %S
|
|
|
2189 conversions. The default precision for floating-point conversions
|
|
|
2190 is six.
|
|
203
|
2191 If the precision is specified as `*', the precision is assumed to have been
|
|
|
2192 specified as an argument. The argument used will be the next argument
|
|
|
2193 after the field width argument, if any. If the field width was not
|
|
|
2194 specified as an argument, any repositioning specification that would
|
|
|
2195 normally specify the argument to be converted will now specify where to
|
|
|
2196 find the precision argument. If there is no repositioning specification,
|
|
|
2197 the normal next argument is used.
|
|
0
|
2198
|
|
|
2199 The ` ' and `+' flags mean prefix non-negative numbers with a space or
|
|
|
2200 plus sign, respectively.
|
|
|
2201 The `#' flag means print numbers in an alternate, more verbose format:
|
|
|
2202 octal numbers begin with zero; hex numbers begin with a 0x or 0X;
|
|
|
2203 a decimal point is printed in %f, %e, and %E conversions even if no
|
|
|
2204 numbers are printed after it; and trailing zeroes are not omitted in
|
|
|
2205 %g and %G conversions.
|
|
|
2206
|
|
|
2207 Use %% to put a single % into the output.
|
|
20
|
2208 */
|
|
|
2209 (int nargs, Lisp_Object *args))
|
|
0
|
2210 {
|
|
|
2211 /* It should not be necessary to GCPRO ARGS, because
|
|
|
2212 the caller in the interpreter should take care of that. */
|
|
|
2213
|
|
|
2214 CHECK_STRING (args[0]);
|
|
|
2215 return emacs_doprnt_string_lisp (0, args[0], 0, nargs - 1, args + 1);
|
|
|
2216 }
|
|
|
2217
|
|
|
2218
|
|
20
|
2219 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /*
|
|
0
|
2220 Return t if two characters match, optionally ignoring case.
|
|
110
|
2221 Both arguments must be characters (i.e. NOT integers).
|
|
0
|
2222 Case is ignored if `case-fold-search' is non-nil in BUFFER.
|
|
|
2223 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
2224 */
|
|
|
2225 (c1, c2, buffer))
|
|
0
|
2226 {
|
|
|
2227 Emchar x1, x2;
|
|
153
|
2228 struct buffer *b = decode_buffer (buffer, 1);
|
|
0
|
2229
|
|
|
2230 CHECK_CHAR_COERCE_INT (c1);
|
|
|
2231 CHECK_CHAR_COERCE_INT (c2);
|
|
|
2232 x1 = XCHAR (c1);
|
|
|
2233 x2 = XCHAR (c2);
|
|
|
2234
|
|
153
|
2235 return (!NILP (b->case_fold_search)
|
|
|
2236 ? DOWNCASE (b, x1) == DOWNCASE (b, x2)
|
|
|
2237 : x1 == x2)
|
|
|
2238 ? Qt : Qnil;
|
|
0
|
2239 }
|
|
110
|
2240
|
|
398
|
2241 DEFUN ("char=", Fchar_Equal, 2, 2, 0, /*
|
|
110
|
2242 Return t if two characters match, case is significant.
|
|
|
2243 Both arguments must be characters (i.e. NOT integers).
|
|
|
2244 */
|
|
398
|
2245 (c1, c2))
|
|
110
|
2246 {
|
|
|
2247 CHECK_CHAR_COERCE_INT (c1);
|
|
|
2248 CHECK_CHAR_COERCE_INT (c2);
|
|
|
2249
|
|
398
|
2250 return EQ (c1, c2) ? Qt : Qnil;
|
|
110
|
2251 }
|
|
0
|
2252
|
|
|
2253 #if 0 /* Undebugged FSFmacs code */
|
|
|
2254 /* Transpose the markers in two regions of the current buffer, and
|
|
|
2255 adjust the ones between them if necessary (i.e.: if the regions
|
|
|
2256 differ in size).
|
|
|
2257
|
|
|
2258 Traverses the entire marker list of the buffer to do so, adding an
|
|
|
2259 appropriate amount to some, subtracting from some, and leaving the
|
|
|
2260 rest untouched. Most of this is copied from adjust_markers in insdel.c.
|
|
185
|
2261
|
|
0
|
2262 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
|
|
|
2263
|
|
|
2264 void
|
|
|
2265 transpose_markers (Bufpos start1, Bufpos end1, Bufpos start2, Bufpos end2)
|
|
|
2266 {
|
|
|
2267 Charcount amt1, amt2, diff;
|
|
|
2268 Lisp_Object marker;
|
|
|
2269 struct buffer *buf = current_buffer;
|
|
|
2270
|
|
|
2271 /* Update point as if it were a marker. */
|
|
|
2272 if (BUF_PT (buf) < start1)
|
|
|
2273 ;
|
|
|
2274 else if (BUF_PT (buf) < end1)
|
|
|
2275 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1));
|
|
|
2276 else if (BUF_PT (buf) < start2)
|
|
|
2277 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1));
|
|
|
2278 else if (BUF_PT (buf) < end2)
|
|
|
2279 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1));
|
|
|
2280
|
|
|
2281 /* We used to adjust the endpoints here to account for the gap, but that
|
|
|
2282 isn't good enough. Even if we assume the caller has tried to move the
|
|
|
2283 gap out of our way, it might still be at start1 exactly, for example;
|
|
|
2284 and that places it `inside' the interval, for our purposes. The amount
|
|
|
2285 of adjustment is nontrivial if there's a `denormalized' marker whose
|
|
|
2286 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
|
|
|
2287 the dirty work to Fmarker_position, below. */
|
|
|
2288
|
|
|
2289 /* The difference between the region's lengths */
|
|
|
2290 diff = (end2 - start2) - (end1 - start1);
|
|
185
|
2291
|
|
0
|
2292 /* For shifting each marker in a region by the length of the other
|
|
|
2293 * region plus the distance between the regions.
|
|
|
2294 */
|
|
|
2295 amt1 = (end2 - start2) + (start2 - end1);
|
|
|
2296 amt2 = (end1 - start1) + (start2 - end1);
|
|
|
2297
|
|
|
2298 for (marker = BUF_MARKERS (buf); !NILP (marker);
|
|
|
2299 marker = XMARKER (marker)->chain)
|
|
|
2300 {
|
|
272
|
2301 Bufpos mpos = marker_position (marker);
|
|
0
|
2302 if (mpos >= start1 && mpos < end2)
|
|
|
2303 {
|
|
|
2304 if (mpos < end1)
|
|
|
2305 mpos += amt1;
|
|
|
2306 else if (mpos < start2)
|
|
|
2307 mpos += diff;
|
|
|
2308 else
|
|
|
2309 mpos -= amt2;
|
|
|
2310 set_marker_position (marker, mpos);
|
|
|
2311 }
|
|
|
2312 }
|
|
|
2313 }
|
|
|
2314
|
|
153
|
2315 #endif /* 0 */
|
|
0
|
2316
|
|
20
|
2317 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /*
|
|
0
|
2318 Transpose region START1 to END1 with START2 to END2.
|
|
|
2319 The regions may not be overlapping, because the size of the buffer is
|
|
|
2320 never changed in a transposition.
|
|
|
2321
|
|
|
2322 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose
|
|
|
2323 any markers that happen to be located in the regions. (#### BUG: currently
|
|
|
2324 this function always acts as if LEAVE_MARKERS is non-nil.)
|
|
|
2325
|
|
|
2326 Transposing beyond buffer boundaries is an error.
|
|
20
|
2327 */
|
|
70
|
2328 (startr1, endr1, startr2, endr2, leave_markers))
|
|
0
|
2329 {
|
|
|
2330 Bufpos start1, end1, start2, end2;
|
|
|
2331 Charcount len1, len2;
|
|
|
2332 Lisp_Object string1, string2;
|
|
|
2333 struct buffer *buf = current_buffer;
|
|
|
2334
|
|
|
2335 get_buffer_range_char (buf, startr1, endr1, &start1, &end1, 0);
|
|
|
2336 get_buffer_range_char (buf, startr2, endr2, &start2, &end2, 0);
|
|
|
2337
|
|
|
2338 len1 = end1 - start1;
|
|
|
2339 len2 = end2 - start2;
|
|
|
2340
|
|
|
2341 if (start2 < end1)
|
|
|
2342 error ("transposed regions not properly ordered");
|
|
|
2343 else if (start1 == end1 || start2 == end2)
|
|
|
2344 error ("transposed region may not be of length 0");
|
|
|
2345
|
|
|
2346 string1 = make_string_from_buffer (buf, start1, len1);
|
|
|
2347 string2 = make_string_from_buffer (buf, start2, len2);
|
|
|
2348 buffer_delete_range (buf, start2, end2, 0);
|
|
|
2349 buffer_insert_lisp_string_1 (buf, start2, string1, 0);
|
|
|
2350 buffer_delete_range (buf, start1, end1, 0);
|
|
|
2351 buffer_insert_lisp_string_1 (buf, start1, string2, 0);
|
|
|
2352
|
|
|
2353 /* In FSFmacs there is a whole bunch of really ugly code here
|
|
|
2354 to attempt to transpose the regions without using up any
|
|
|
2355 extra memory. Although the intent may be good, the result
|
|
|
2356 was highly bogus. */
|
|
|
2357
|
|
|
2358 return Qnil;
|
|
|
2359 }
|
|
|
2360
|
|
|
2361
|
|
|
2362 /************************************************************************/
|
|
|
2363 /* initialization */
|
|
|
2364 /************************************************************************/
|
|
|
2365
|
|
|
2366 void
|
|
|
2367 syms_of_editfns (void)
|
|
|
2368 {
|
|
|
2369 defsymbol (&Qpoint, "point");
|
|
|
2370 defsymbol (&Qmark, "mark");
|
|
|
2371 defsymbol (&Qregion_beginning, "region-beginning");
|
|
|
2372 defsymbol (&Qregion_end, "region-end");
|
|
|
2373 defsymbol (&Qformat, "format");
|
|
288
|
2374 defsymbol (&Quser_files_and_directories, "user-files-and-directories");
|
|
0
|
2375
|
|
20
|
2376 DEFSUBR (Fchar_equal);
|
|
110
|
2377 DEFSUBR (Fchar_Equal);
|
|
20
|
2378 DEFSUBR (Fgoto_char);
|
|
|
2379 DEFSUBR (Fstring_to_char);
|
|
|
2380 DEFSUBR (Fchar_to_string);
|
|
|
2381 DEFSUBR (Fbuffer_substring);
|
|
377
|
2382 DEFSUBR (Fbuffer_substring_no_properties);
|
|
0
|
2383
|
|
20
|
2384 DEFSUBR (Fpoint_marker);
|
|
|
2385 DEFSUBR (Fmark_marker);
|
|
|
2386 DEFSUBR (Fpoint);
|
|
|
2387 DEFSUBR (Fregion_beginning);
|
|
|
2388 DEFSUBR (Fregion_end);
|
|
|
2389 DEFSUBR (Fsave_excursion);
|
|
161
|
2390 DEFSUBR (Fsave_current_buffer);
|
|
0
|
2391
|
|
272
|
2392 DEFSUBR (Fbuffer_size);
|
|
20
|
2393 DEFSUBR (Fpoint_max);
|
|
|
2394 DEFSUBR (Fpoint_min);
|
|
|
2395 DEFSUBR (Fpoint_min_marker);
|
|
|
2396 DEFSUBR (Fpoint_max_marker);
|
|
0
|
2397
|
|
20
|
2398 DEFSUBR (Fbobp);
|
|
|
2399 DEFSUBR (Feobp);
|
|
|
2400 DEFSUBR (Fbolp);
|
|
|
2401 DEFSUBR (Feolp);
|
|
|
2402 DEFSUBR (Ffollowing_char);
|
|
|
2403 DEFSUBR (Fpreceding_char);
|
|
|
2404 DEFSUBR (Fchar_after);
|
|
114
|
2405 DEFSUBR (Fchar_before);
|
|
20
|
2406 DEFSUBR (Finsert);
|
|
|
2407 DEFSUBR (Finsert_string);
|
|
|
2408 DEFSUBR (Finsert_before_markers);
|
|
|
2409 DEFSUBR (Finsert_char);
|
|
0
|
2410
|
|
263
|
2411 DEFSUBR (Ftemp_directory);
|
|
20
|
2412 DEFSUBR (Fuser_login_name);
|
|
|
2413 DEFSUBR (Fuser_real_login_name);
|
|
|
2414 DEFSUBR (Fuser_uid);
|
|
|
2415 DEFSUBR (Fuser_real_uid);
|
|
|
2416 DEFSUBR (Fuser_full_name);
|
|
288
|
2417 DEFSUBR (Fuser_home_directory);
|
|
20
|
2418 DEFSUBR (Femacs_pid);
|
|
|
2419 DEFSUBR (Fcurrent_time);
|
|
|
2420 DEFSUBR (Fcurrent_process_time);
|
|
|
2421 DEFSUBR (Fformat_time_string);
|
|
|
2422 DEFSUBR (Fdecode_time);
|
|
|
2423 DEFSUBR (Fencode_time);
|
|
|
2424 DEFSUBR (Fcurrent_time_string);
|
|
|
2425 DEFSUBR (Fcurrent_time_zone);
|
|
|
2426 DEFSUBR (Fset_time_zone_rule);
|
|
|
2427 DEFSUBR (Fsystem_name);
|
|
|
2428 DEFSUBR (Fformat);
|
|
0
|
2429
|
|
20
|
2430 DEFSUBR (Finsert_buffer_substring);
|
|
|
2431 DEFSUBR (Fcompare_buffer_substrings);
|
|
|
2432 DEFSUBR (Fsubst_char_in_region);
|
|
|
2433 DEFSUBR (Ftranslate_region);
|
|
|
2434 DEFSUBR (Fdelete_region);
|
|
|
2435 DEFSUBR (Fwiden);
|
|
|
2436 DEFSUBR (Fnarrow_to_region);
|
|
|
2437 DEFSUBR (Fsave_restriction);
|
|
|
2438 DEFSUBR (Ftranspose_regions);
|
|
0
|
2439
|
|
|
2440 defsymbol (&Qzmacs_update_region, "zmacs-update-region");
|
|
|
2441 defsymbol (&Qzmacs_deactivate_region, "zmacs-deactivate-region");
|
|
|
2442 defsymbol (&Qzmacs_region_buffer, "zmacs-region-buffer");
|
|
|
2443 }
|
|
|
2444
|
|
|
2445 void
|
|
|
2446 vars_of_editfns (void)
|
|
|
2447 {
|
|
|
2448 staticpro (&Vsystem_name);
|
|
|
2449 #if 0
|
|
|
2450 staticpro (&Vuser_name);
|
|
|
2451 staticpro (&Vuser_real_name);
|
|
185
|
2452 #endif
|
|
0
|
2453 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /*
|
|
|
2454 *Whether LISPM-style active regions should be used.
|
|
|
2455 This means that commands which operate on the region (the area between the
|
|
|
2456 point and the mark) will only work while the region is in the ``active''
|
|
|
2457 state, which is indicated by highlighting. Executing most commands causes
|
|
|
2458 the region to not be in the active state, so (for example) \\[kill-region] will only
|
|
|
2459 work immediately after activating the region.
|
|
|
2460
|
|
|
2461 More specifically:
|
|
|
2462
|
|
|
2463 - Commands which operate on the region only work if the region is active.
|
|
|
2464 - Only a very small set of commands cause the region to become active:
|
|
|
2465 Those commands whose semantics are to mark an area, like mark-defun.
|
|
|
2466 - The region is deactivated after each command that is executed, except that:
|
|
185
|
2467 - "Motion" commands do not change whether the region is active or not.
|
|
0
|
2468
|
|
|
2469 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the
|
|
|
2470 cursor with normal motion commands (C-n, C-p, etc) will cause the region
|
|
|
2471 between point and the recently-pushed mark to be highlighted. It will
|
|
110
|
2472 remain highlighted until some non-motion command is executed.
|
|
0
|
2473
|
|
|
2474 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a
|
|
|
2475 region and execute a command that operates on it, you can reactivate the
|
|
|
2476 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it
|
|
|
2477 again.
|
|
|
2478
|
|
|
2479 Generally, commands which push marks as a means of navigation (like
|
|
|
2480 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the
|
|
|
2481 region. But commands which push marks as a means of marking an area of
|
|
|
2482 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer]))
|
|
|
2483 do activate the region.
|
|
|
2484
|
|
|
2485 The way the command loop actually works with regard to deactivating the
|
|
|
2486 region is as follows:
|
|
|
2487
|
|
|
2488 - If the variable `zmacs-region-stays' has been set to t during the command
|
|
|
2489 just executed, the region is left alone (this is how the motion commands
|
|
|
2490 make the region stay around; see the `_' flag in the `interactive'
|
|
|
2491 specification). `zmacs-region-stays' is reset to nil before each command
|
|
|
2492 is executed.
|
|
|
2493 - If the function `zmacs-activate-region' has been called during the command
|
|
|
2494 just executed, the region is left alone. Very few functions should
|
|
|
2495 actually call this function.
|
|
|
2496 - Otherwise, if the region is active, the region is deactivated and
|
|
|
2497 the `zmacs-deactivate-region-hook' is called.
|
|
|
2498 */ );
|
|
|
2499 /* Zmacs style active regions are now ON by default */
|
|
|
2500 zmacs_regions = 1;
|
|
|
2501
|
|
|
2502 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /*
|
|
|
2503 Do not alter this. It is for internal use only.
|
|
|
2504 */ );
|
|
|
2505 zmacs_region_active_p = 0;
|
|
|
2506
|
|
|
2507 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /*
|
|
219
|
2508 Whether the current command will deactivate the region.
|
|
0
|
2509 Commands which do not wish to affect whether the region is currently
|
|
|
2510 highlighted should set this to t. Normally, the region is turned off after
|
|
|
2511 executing each command that did not explicitly turn it on with the function
|
|
|
2512 zmacs-activate-region. Setting this to true lets a command be non-intrusive.
|
|
|
2513 See the variable `zmacs-regions'.
|
|
219
|
2514
|
|
|
2515 The same effect can be achieved using the `_' interactive specification.
|
|
0
|
2516 */ );
|
|
|
2517 zmacs_region_stays = 0;
|
|
|
2518
|
|
|
2519 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /*
|
|
|
2520 Do not use this -- it will be going away soon.
|
|
|
2521 Indicates if `goto-char' has just been run. This information is allegedly
|
|
|
2522 needed to get the desired behavior for atomic extents and unfortunately
|
|
|
2523 is not available by any other means.
|
|
|
2524 */ );
|
|
|
2525 atomic_extent_goto_char_p = 0;
|
|
195
|
2526 #ifdef AMPERSAND_FULL_NAME
|
|
|
2527 Fprovide(intern("ampersand-full-name"));
|
|
|
2528 #endif
|
|
219
|
2529
|
|
|
2530 DEFVAR_LISP ("user-full-name", &Vuser_full_name /*
|
|
|
2531 *The name of the user.
|
|
|
2532 The function `user-full-name', which will return the value of this
|
|
|
2533 variable, when called without arguments.
|
|
|
2534 This is initialized to the value of the NAME environment variable.
|
|
|
2535 */ );
|
|
|
2536 /* Initialized at run-time. */
|
|
|
2537 Vuser_full_name = Qnil;
|
|
0
|
2538 }
|
