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428
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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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446
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39 #include "casetab.h"
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428
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40 #include "chartab.h"
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41 #include "line-number.h"
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42
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43 #include "systime.h"
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44 #include "sysdep.h"
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45 #include "syspwd.h"
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46 #include "sysfile.h" /* for getcwd */
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47
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48 /* Some static data, and a function to initialize it for each run */
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49
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50 Lisp_Object Vsystem_name; /* #### - I don't see why this should be */
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51 /* static, either... --Stig */
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52 #if 0 /* XEmacs - this is now dynamic */
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53 /* if at some point it's deemed desirable to
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54 use lisp variables here, then they can be
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55 initialized to nil and then set to their
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56 real values upon the first call to the
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57 functions that generate them. --stig */
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58 Lisp_Object Vuser_real_login_name; /* login name of current user ID */
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59 Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER. */
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60 #endif
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61
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62 /* It's useful to be able to set this as user customization, so we'll
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63 keep it. */
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64 Lisp_Object Vuser_full_name;
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65 EXFUN (Fuser_full_name, 1);
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66
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67 Lisp_Object Qformat;
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68
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69 Lisp_Object Qpoint, Qmark, Qregion_beginning, Qregion_end;
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70
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71 Lisp_Object Quser_files_and_directories;
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72
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73 /* This holds the value of `environ' produced by the previous
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74 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
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75 has never been called. */
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76 static char **environbuf;
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77
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78 void
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79 init_editfns (void)
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80 {
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81 /* Only used in removed code below. */
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82 char *p;
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83
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84 environbuf = 0;
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85
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86 /* Set up system_name even when dumping. */
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87 init_system_name ();
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88
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89 #ifndef CANNOT_DUMP
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90 if (!initialized)
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91 return;
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92 #endif
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93
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94 if ((p = getenv ("NAME")))
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95 /* I don't think it's the right thing to do the ampersand
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96 modification on NAME. Not that it matters anymore... -hniksic */
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440
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97 Vuser_full_name = build_ext_string (p, Qnative);
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428
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98 else
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99 Vuser_full_name = Fuser_full_name (Qnil);
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100 }
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101
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102 DEFUN ("char-to-string", Fchar_to_string, 1, 1, 0, /*
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444
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103 Convert CHARACTER to a one-character string containing that character.
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428
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104 */
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444
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105 (character))
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428
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106 {
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107 Bytecount len;
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665
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108 Intbyte str[MAX_EMCHAR_LEN];
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428
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109
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444
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110 if (EVENTP (character))
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428
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111 {
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444
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112 Lisp_Object ch2 = Fevent_to_character (character, Qt, Qnil, Qnil);
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428
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113 if (NILP (ch2))
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563
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114 invalid_argument
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115 ("character has no ASCII equivalent:", Fcopy_event (character, Qnil));
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444
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116 character = ch2;
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428
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117 }
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118
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444
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119 CHECK_CHAR_COERCE_INT (character);
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428
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120
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444
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121 len = set_charptr_emchar (str, XCHAR (character));
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428
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122 return make_string (str, len);
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123 }
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124
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125 DEFUN ("string-to-char", Fstring_to_char, 1, 1, 0, /*
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126 Convert arg STRING to a character, the first character of that string.
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127 An empty string will return the constant `nil'.
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128 */
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444
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129 (string))
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428
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130 {
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440
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131 Lisp_String *p;
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444
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132 CHECK_STRING (string);
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428
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133
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444
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134 p = XSTRING (string);
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428
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135 if (string_length (p) != 0)
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136 return make_char (string_char (p, 0));
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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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141 }
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142
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143
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144 static Lisp_Object
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665
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145 buildmark (Charbpos val, Lisp_Object buffer)
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428
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146 {
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147 Lisp_Object mark = Fmake_marker ();
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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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152 DEFUN ("point", Fpoint, 0, 1, 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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156 */
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157 (buffer))
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158 {
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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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161 }
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162
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163 DEFUN ("point-marker", Fpoint_marker, 0, 2, 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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170 */
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171 (dont_copy_p, buffer))
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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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176 else
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177 return b->point_marker;
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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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665
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183 Charbpos
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184 charbpos_clip_to_bounds (Charbpos lower, Charbpos num, Charbpos upper)
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428
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185 {
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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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189 }
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190
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665
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191 Bytebpos
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192 bytebpos_clip_to_bounds (Bytebpos lower, Bytebpos num, Bytebpos upper)
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428
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193 {
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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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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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210 DEFUN ("goto-char", Fgoto_char, 1, 2, "NGoto char: ", /*
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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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215 */
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216 (position, buffer))
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217 {
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218 struct buffer *b = decode_buffer (buffer, 1);
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665
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219 Charbpos n = get_buffer_pos_char (b, position, GB_COERCE_RANGE);
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428
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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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222 return make_int (n);
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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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563
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236 if (NILP (m)) invalid_operation ("There is no region now", Qunbound);
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428
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237 if (!!(BUF_PT (b) < XINT (m)) == !!beginningp)
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238 return make_int (BUF_PT (b));
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239 else
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240 return m;
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241 }
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242
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243 DEFUN ("region-beginning", Fregion_beginning, 0, 1, 0, /*
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244 Return position of beginning of region in BUFFER, as an integer.
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245 If BUFFER is nil, the current buffer is assumed.
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246 */
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247 (buffer))
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248 {
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249 return region_limit (1, decode_buffer (buffer, 1));
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250 }
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251
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252 DEFUN ("region-end", Fregion_end, 0, 1, 0, /*
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253 Return position of end of region in BUFFER, as an integer.
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254 If BUFFER is nil, the current buffer is assumed.
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255 */
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256 (buffer))
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257 {
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258 return region_limit (0, decode_buffer (buffer, 1));
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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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300 DEFUN ("mark-marker", Fmark_marker, 0, 2, 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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310 */
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311 (force, buffer))
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|
312 {
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|
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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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|
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317 }
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318
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|
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319
|
|
|
320 /* The saved object is a cons:
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321
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322 (COPY-OF-POINT-MARKER . COPY-OF-MARK)
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323
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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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327 Lisp_Object
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|
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328 save_excursion_save (void)
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|
|
329 {
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|
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330 struct buffer *b;
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331
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|
332 /* #### Huh? --hniksic */
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333 /*if (preparing_for_armageddon) return Qnil;*/
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334
|
|
665
|
335 #ifdef ERROR_CHECK_CHARBPOS
|
|
428
|
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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|
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339
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|
340 b = current_buffer;
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341
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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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|
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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|
|
349 Lisp_Object buffer = Fmarker_buffer (XCAR (info));
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|
350
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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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|
|
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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|
|
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
|
|
|
369 this has been the behavior for countless XEmacs releases
|
|
|
370 now. --hniksic */
|
|
|
371 if (visible
|
|
|
372 && (current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)))
|
|
|
373 switch_to_buffer (Fcurrent_buffer (), Qnil);
|
|
|
374 #endif
|
|
|
375
|
|
|
376 UNGCPRO;
|
|
|
377 }
|
|
|
378
|
|
|
379 /* Free all the junk we allocated, so that a `save-excursion' comes
|
|
|
380 for free in terms of GC junk. */
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|
|
381 free_marker (XMARKER (XCAR (info)));
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|
|
382 free_marker (XMARKER (XCDR (info)));
|
|
|
383 free_cons (XCONS (info));
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|
|
384 return Qnil;
|
|
|
385 }
|
|
|
386
|
|
|
387 DEFUN ("save-excursion", Fsave_excursion, 0, UNEVALLED, 0, /*
|
|
|
388 Save point, mark, and current buffer; execute BODY; restore those things.
|
|
|
389 Executes BODY just like `progn'.
|
|
|
390 The values of point, mark and the current buffer are restored
|
|
|
391 even in case of abnormal exit (throw or error).
|
|
|
392 */
|
|
|
393 (args))
|
|
|
394 {
|
|
|
395 /* This function can GC */
|
|
|
396 int speccount = specpdl_depth ();
|
|
|
397
|
|
|
398 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
399
|
|
|
400 return unbind_to (speccount, Fprogn (args));
|
|
|
401 }
|
|
|
402
|
|
|
403 Lisp_Object
|
|
|
404 save_current_buffer_restore (Lisp_Object buffer)
|
|
|
405 {
|
|
|
406 struct buffer *buf = XBUFFER (buffer);
|
|
|
407 /* Avoid signaling an error if the buffer is no longer alive. This
|
|
|
408 is for consistency with save-excursion. */
|
|
|
409 if (BUFFER_LIVE_P (buf))
|
|
|
410 set_buffer_internal (buf);
|
|
|
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 */
|
|
|
418 (args))
|
|
|
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 }
|
|
|
427
|
|
|
428 DEFUN ("buffer-size", Fbuffer_size, 0, 1, 0, /*
|
|
|
429 Return the number of characters in BUFFER.
|
|
|
430 If BUFFER is nil, the current buffer is assumed.
|
|
|
431 */
|
|
|
432 (buffer))
|
|
|
433 {
|
|
|
434 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
435 return make_int (BUF_SIZE (b));
|
|
|
436 }
|
|
|
437
|
|
|
438 DEFUN ("point-min", Fpoint_min, 0, 1, 0, /*
|
|
|
439 Return the minimum permissible value of point in BUFFER.
|
|
434
|
440 This is 1, unless narrowing (a buffer restriction)
|
|
|
441 is in effect, in which case it may be greater.
|
|
428
|
442 If BUFFER is nil, the current buffer is assumed.
|
|
|
443 */
|
|
|
444 (buffer))
|
|
|
445 {
|
|
|
446 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
447 return make_int (BUF_BEGV (b));
|
|
|
448 }
|
|
|
449
|
|
|
450 DEFUN ("point-min-marker", Fpoint_min_marker, 0, 1, 0, /*
|
|
|
451 Return a marker to the minimum permissible value of point in BUFFER.
|
|
434
|
452 This is the beginning, unless narrowing (a buffer restriction)
|
|
|
453 is in effect, in which case it may be greater.
|
|
428
|
454 If BUFFER is nil, the current buffer is assumed.
|
|
|
455 */
|
|
|
456 (buffer))
|
|
|
457 {
|
|
|
458 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
459 return buildmark (BUF_BEGV (b), make_buffer (b));
|
|
|
460 }
|
|
|
461
|
|
|
462 DEFUN ("point-max", Fpoint_max, 0, 1, 0, /*
|
|
|
463 Return the maximum permissible value of point in BUFFER.
|
|
|
464 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
|
|
434
|
465 is in effect, in which case it may be less.
|
|
428
|
466 If BUFFER is nil, the current buffer is assumed.
|
|
|
467 */
|
|
|
468 (buffer))
|
|
|
469 {
|
|
|
470 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
471 return make_int (BUF_ZV (b));
|
|
|
472 }
|
|
|
473
|
|
|
474 DEFUN ("point-max-marker", Fpoint_max_marker, 0, 1, 0, /*
|
|
434
|
475 Return a marker to the maximum permissible value of point in BUFFER.
|
|
428
|
476 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
|
|
434
|
477 is in effect, in which case it may be less.
|
|
428
|
478 If BUFFER is nil, the current buffer is assumed.
|
|
|
479 */
|
|
|
480 (buffer))
|
|
|
481 {
|
|
|
482 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
483 return buildmark (BUF_ZV (b), make_buffer (b));
|
|
|
484 }
|
|
|
485
|
|
|
486 DEFUN ("following-char", Ffollowing_char, 0, 1, 0, /*
|
|
|
487 Return the character following point.
|
|
|
488 At the end of the buffer or accessible region, return 0.
|
|
|
489 If BUFFER is nil, the current buffer is assumed.
|
|
|
490 */
|
|
|
491 (buffer))
|
|
|
492 {
|
|
|
493 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
494 if (BUF_PT (b) >= BUF_ZV (b))
|
|
|
495 return Qzero; /* #### Gag me! */
|
|
|
496 else
|
|
|
497 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b)));
|
|
|
498 }
|
|
|
499
|
|
|
500 DEFUN ("preceding-char", Fpreceding_char, 0, 1, 0, /*
|
|
|
501 Return the character preceding point.
|
|
|
502 At the beginning of the buffer or accessible region, return 0.
|
|
|
503 If BUFFER is nil, the current buffer is assumed.
|
|
|
504 */
|
|
|
505 (buffer))
|
|
|
506 {
|
|
|
507 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
508 if (BUF_PT (b) <= BUF_BEGV (b))
|
|
|
509 return Qzero; /* #### Gag me! */
|
|
|
510 else
|
|
|
511 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b) - 1));
|
|
|
512 }
|
|
|
513
|
|
|
514 DEFUN ("bobp", Fbobp, 0, 1, 0, /*
|
|
|
515 Return t if point is at the beginning of the buffer.
|
|
|
516 If the buffer is narrowed, this means the beginning of the narrowed part.
|
|
|
517 If BUFFER is nil, the current buffer is assumed.
|
|
|
518 */
|
|
|
519 (buffer))
|
|
|
520 {
|
|
|
521 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
522 return BUF_PT (b) == BUF_BEGV (b) ? Qt : Qnil;
|
|
|
523 }
|
|
|
524
|
|
|
525 DEFUN ("eobp", Feobp, 0, 1, 0, /*
|
|
|
526 Return t if point is at the end of the buffer.
|
|
|
527 If the buffer is narrowed, this means the end of the narrowed part.
|
|
|
528 If BUFFER is nil, the current buffer is assumed.
|
|
|
529 */
|
|
|
530 (buffer))
|
|
|
531 {
|
|
|
532 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
533 return BUF_PT (b) == BUF_ZV (b) ? Qt : Qnil;
|
|
|
534 }
|
|
|
535
|
|
|
536 int
|
|
665
|
537 beginning_of_line_p (struct buffer *b, Charbpos pt)
|
|
428
|
538 {
|
|
|
539 return pt <= BUF_BEGV (b) || BUF_FETCH_CHAR (b, pt - 1) == '\n';
|
|
|
540 }
|
|
|
541
|
|
|
542
|
|
|
543 DEFUN ("bolp", Fbolp, 0, 1, 0, /*
|
|
|
544 Return t if point is at the beginning of a line.
|
|
|
545 If BUFFER is nil, the current buffer is assumed.
|
|
|
546 */
|
|
|
547 (buffer))
|
|
|
548 {
|
|
|
549 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
550 return beginning_of_line_p (b, BUF_PT (b)) ? Qt : Qnil;
|
|
|
551 }
|
|
|
552
|
|
|
553 DEFUN ("eolp", Feolp, 0, 1, 0, /*
|
|
|
554 Return t if point is at the end of a line.
|
|
|
555 `End of a line' includes point being at the end of the buffer.
|
|
|
556 If BUFFER is nil, the current buffer is assumed.
|
|
|
557 */
|
|
|
558 (buffer))
|
|
|
559 {
|
|
|
560 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
561 return (BUF_PT (b) == BUF_ZV (b) || BUF_FETCH_CHAR (b, BUF_PT (b)) == '\n')
|
|
|
562 ? Qt : Qnil;
|
|
|
563 }
|
|
|
564
|
|
|
565 DEFUN ("char-after", Fchar_after, 0, 2, 0, /*
|
|
434
|
566 Return the character at position POS in BUFFER.
|
|
|
567 POS is an integer or a marker.
|
|
428
|
568 If POS is out of range, the value is nil.
|
|
434
|
569 if POS is nil, the value of point is assumed.
|
|
428
|
570 If BUFFER is nil, the current buffer is assumed.
|
|
|
571 */
|
|
|
572 (pos, buffer))
|
|
|
573 {
|
|
|
574 struct buffer *b = decode_buffer (buffer, 1);
|
|
665
|
575 Charbpos n = (NILP (pos) ? BUF_PT (b) :
|
|
428
|
576 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD));
|
|
|
577
|
|
|
578 if (n < 0 || n == BUF_ZV (b))
|
|
|
579 return Qnil;
|
|
|
580 return make_char (BUF_FETCH_CHAR (b, n));
|
|
|
581 }
|
|
|
582
|
|
|
583 DEFUN ("char-before", Fchar_before, 0, 2, 0, /*
|
|
434
|
584 Return the character preceding position POS in BUFFER.
|
|
|
585 POS is an integer or a marker.
|
|
428
|
586 If POS is out of range, the value is nil.
|
|
434
|
587 if POS is nil, the value of point is assumed.
|
|
428
|
588 If BUFFER is nil, the current buffer is assumed.
|
|
|
589 */
|
|
|
590 (pos, buffer))
|
|
|
591 {
|
|
|
592 struct buffer *b = decode_buffer (buffer, 1);
|
|
665
|
593 Charbpos n = (NILP (pos) ? BUF_PT (b) :
|
|
434
|
594 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD));
|
|
428
|
595
|
|
|
596 n--;
|
|
|
597
|
|
|
598 if (n < BUF_BEGV (b))
|
|
|
599 return Qnil;
|
|
|
600 return make_char (BUF_FETCH_CHAR (b, n));
|
|
|
601 }
|
|
|
602
|
|
442
|
603 #if !defined(WINDOWSNT) && !defined(MSDOS)
|
|
|
604 #include <sys/stat.h>
|
|
|
605 #include <fcntl.h>
|
|
|
606 #include <errno.h>
|
|
|
607 #include <limits.h>
|
|
|
608 #endif
|
|
428
|
609
|
|
|
610 DEFUN ("temp-directory", Ftemp_directory, 0, 0, 0, /*
|
|
|
611 Return the pathname to the directory to use for temporary files.
|
|
442
|
612 On MS Windows, this is obtained from the TEMP or TMP environment variables,
|
|
428
|
613 defaulting to / if they are both undefined.
|
|
444
|
614 On Unix it is obtained from TMPDIR, with /tmp as the default.
|
|
428
|
615 */
|
|
|
616 ())
|
|
|
617 {
|
|
|
618 char *tmpdir;
|
|
442
|
619 #if defined(WIN32_NATIVE)
|
|
428
|
620 tmpdir = getenv ("TEMP");
|
|
|
621 if (!tmpdir)
|
|
|
622 tmpdir = getenv ("TMP");
|
|
|
623 if (!tmpdir)
|
|
|
624 tmpdir = "/";
|
|
442
|
625 #else /* WIN32_NATIVE */
|
|
428
|
626 tmpdir = getenv ("TMPDIR");
|
|
|
627 if (!tmpdir)
|
|
442
|
628 {
|
|
|
629 struct stat st;
|
|
|
630 int myuid = getuid();
|
|
|
631 static char path[5 /* strlen ("/tmp/") */ + 1 + _POSIX_PATH_MAX];
|
|
|
632
|
|
|
633 strcpy (path, "/tmp/");
|
|
|
634 strncat (path, user_login_name (NULL), _POSIX_PATH_MAX);
|
|
|
635 if (lstat(path, &st) < 0 && errno == ENOENT)
|
|
|
636 {
|
|
|
637 mkdir(path, 0700); /* ignore retval -- checked next anyway. */
|
|
|
638 }
|
|
664
|
639 if (lstat(path, &st) == 0 && st.st_uid == (uid_t) myuid &&
|
|
|
640 S_ISDIR(st.st_mode))
|
|
442
|
641 {
|
|
|
642 tmpdir = path;
|
|
|
643 }
|
|
|
644 else
|
|
|
645 {
|
|
|
646 strcpy(path, getenv("HOME")); strncat(path, "/tmp/", _POSIX_PATH_MAX);
|
|
|
647 if (stat(path, &st) < 0 && errno == ENOENT)
|
|
|
648 {
|
|
|
649 int fd;
|
|
|
650 char warnpath[1+_POSIX_PATH_MAX];
|
|
|
651 mkdir(path, 0700); /* ignore retvals */
|
|
|
652 strcpy(warnpath, path);
|
|
|
653 strncat(warnpath, ".created_by_xemacs", _POSIX_PATH_MAX);
|
|
|
654 if ((fd = open(warnpath, O_WRONLY|O_CREAT, 0644)) > 0)
|
|
|
655 {
|
|
|
656 write(fd, "XEmacs created this directory because /tmp/<yourname> was unavailable -- \nPlease check !\n", 89);
|
|
|
657 close(fd);
|
|
|
658 }
|
|
|
659 }
|
|
|
660 if (stat(path, &st) == 0 && S_ISDIR(st.st_mode))
|
|
|
661 {
|
|
|
662 tmpdir = path;
|
|
|
663 }
|
|
|
664 else
|
|
|
665 {
|
|
428
|
666 tmpdir = "/tmp";
|
|
442
|
667 }
|
|
|
668 }
|
|
|
669 }
|
|
428
|
670 #endif
|
|
|
671
|
|
440
|
672 return build_ext_string (tmpdir, Qfile_name);
|
|
428
|
673 }
|
|
|
674
|
|
|
675 DEFUN ("user-login-name", Fuser_login_name, 0, 1, 0, /*
|
|
|
676 Return the name under which the user logged in, as a string.
|
|
|
677 This is based on the effective uid, not the real uid.
|
|
|
678 Also, if the environment variable LOGNAME or USER is set,
|
|
|
679 that determines the value of this function.
|
|
|
680 If the optional argument UID is present, then environment variables are
|
|
|
681 ignored and this function returns the login name for that UID, or nil.
|
|
|
682 */
|
|
|
683 (uid))
|
|
|
684 {
|
|
|
685 char *returned_name;
|
|
|
686 uid_t local_uid;
|
|
|
687
|
|
|
688 if (!NILP (uid))
|
|
|
689 {
|
|
|
690 CHECK_INT (uid);
|
|
|
691 local_uid = XINT (uid);
|
|
|
692 returned_name = user_login_name (&local_uid);
|
|
|
693 }
|
|
|
694 else
|
|
|
695 {
|
|
|
696 returned_name = user_login_name (NULL);
|
|
|
697 }
|
|
|
698 /* #### - I believe this should return nil instead of "unknown" when pw==0
|
|
|
699 pw=0 is indicated by a null return from user_login_name
|
|
|
700 */
|
|
|
701 return returned_name ? build_string (returned_name) : Qnil;
|
|
|
702 }
|
|
|
703
|
|
|
704 /* This function may be called from other C routines when a
|
|
|
705 character string representation of the user_login_name is
|
|
|
706 needed but a Lisp Object is not. The UID is passed by
|
|
|
707 reference. If UID == NULL, then the USER name
|
|
|
708 for the user running XEmacs will be returned. This
|
|
|
709 corresponds to a nil argument to Fuser_login_name.
|
|
|
710 */
|
|
|
711 char*
|
|
|
712 user_login_name (uid_t *uid)
|
|
|
713 {
|
|
|
714 /* uid == NULL to return name of this user */
|
|
|
715 if (uid != NULL)
|
|
|
716 {
|
|
|
717 struct passwd *pw = getpwuid (*uid);
|
|
|
718 return pw ? pw->pw_name : NULL;
|
|
|
719 }
|
|
|
720 else
|
|
|
721 {
|
|
|
722 /* #### - when euid != uid, then LOGNAME and USER are leftovers from the
|
|
|
723 old environment (I site observed behavior on sunos and linux), so the
|
|
|
724 environment variables should be disregarded in that case. --Stig */
|
|
|
725 char *user_name = getenv ("LOGNAME");
|
|
|
726 if (!user_name)
|
|
|
727 user_name = getenv (
|
|
442
|
728 #ifdef WIN32_NATIVE
|
|
428
|
729 "USERNAME" /* it's USERNAME on NT */
|
|
|
730 #else
|
|
|
731 "USER"
|
|
|
732 #endif
|
|
|
733 );
|
|
|
734 if (user_name)
|
|
|
735 return (user_name);
|
|
|
736 else
|
|
|
737 {
|
|
|
738 struct passwd *pw = getpwuid (geteuid ());
|
|
442
|
739 #ifdef CYGWIN
|
|
428
|
740 /* Since the Cygwin environment may not have an /etc/passwd,
|
|
|
741 return "unknown" instead of the null if the username
|
|
|
742 cannot be determined.
|
|
|
743 */
|
|
593
|
744 /* !!#### fix up in my mule ws */
|
|
|
745 return pw ? pw->pw_name : (char *) "unknown";
|
|
428
|
746 #else
|
|
|
747 /* For all but Cygwin return NULL (nil) */
|
|
|
748 return pw ? pw->pw_name : NULL;
|
|
|
749 #endif
|
|
|
750 }
|
|
|
751 }
|
|
|
752 }
|
|
|
753
|
|
|
754 DEFUN ("user-real-login-name", Fuser_real_login_name, 0, 0, 0, /*
|
|
|
755 Return the name of the user's real uid, as a string.
|
|
|
756 This ignores the environment variables LOGNAME and USER, so it differs from
|
|
|
757 `user-login-name' when running under `su'.
|
|
|
758 */
|
|
|
759 ())
|
|
|
760 {
|
|
|
761 struct passwd *pw = getpwuid (getuid ());
|
|
|
762 /* #### - I believe this should return nil instead of "unknown" when pw==0 */
|
|
|
763
|
|
|
764 Lisp_Object tem = build_string (pw ? pw->pw_name : "unknown");/* no gettext */
|
|
|
765 return tem;
|
|
|
766 }
|
|
|
767
|
|
|
768 DEFUN ("user-uid", Fuser_uid, 0, 0, 0, /*
|
|
|
769 Return the effective uid of Emacs, as an integer.
|
|
|
770 */
|
|
|
771 ())
|
|
|
772 {
|
|
|
773 return make_int (geteuid ());
|
|
|
774 }
|
|
|
775
|
|
|
776 DEFUN ("user-real-uid", Fuser_real_uid, 0, 0, 0, /*
|
|
|
777 Return the real uid of Emacs, as an integer.
|
|
|
778 */
|
|
|
779 ())
|
|
|
780 {
|
|
|
781 return make_int (getuid ());
|
|
|
782 }
|
|
|
783
|
|
|
784 DEFUN ("user-full-name", Fuser_full_name, 0, 1, 0, /*
|
|
|
785 Return the full name of the user logged in, as a string.
|
|
|
786 If the optional argument USER is given, then the full name for that
|
|
|
787 user is returned, or nil. USER may be either a login name or a uid.
|
|
|
788
|
|
|
789 If USER is nil, and `user-full-name' contains a string, the
|
|
|
790 value of `user-full-name' is returned.
|
|
|
791 */
|
|
|
792 (user))
|
|
|
793 {
|
|
|
794 Lisp_Object user_name;
|
|
|
795 struct passwd *pw = NULL;
|
|
|
796 Lisp_Object tem;
|
|
|
797 const char *p, *q;
|
|
|
798
|
|
|
799 if (NILP (user) && STRINGP (Vuser_full_name))
|
|
|
800 return Vuser_full_name;
|
|
|
801
|
|
|
802 user_name = (STRINGP (user) ? user : Fuser_login_name (user));
|
|
|
803 if (!NILP (user_name)) /* nil when nonexistent UID passed as arg */
|
|
|
804 {
|
|
442
|
805 const char *user_name_ext;
|
|
428
|
806
|
|
|
807 /* Fuck me. getpwnam() can call select() and (under IRIX at least)
|
|
|
808 things get wedged if a SIGIO arrives during this time. */
|
|
440
|
809 TO_EXTERNAL_FORMAT (LISP_STRING, user_name,
|
|
|
810 C_STRING_ALLOCA, user_name_ext,
|
|
|
811 Qnative);
|
|
428
|
812 slow_down_interrupts ();
|
|
|
813 pw = (struct passwd *) getpwnam (user_name_ext);
|
|
|
814 speed_up_interrupts ();
|
|
|
815 }
|
|
|
816
|
|
|
817 /* #### - Stig sez: this should return nil instead of "unknown" when pw==0 */
|
|
|
818 /* Ben sez: bad idea because it's likely to break something */
|
|
|
819 #ifndef AMPERSAND_FULL_NAME
|
|
442
|
820 p = pw ? USER_FULL_NAME : "unknown"; /* don't gettext */
|
|
428
|
821 q = strchr (p, ',');
|
|
|
822 #else
|
|
442
|
823 p = pw ? USER_FULL_NAME : "unknown"; /* don't gettext */
|
|
428
|
824 q = strchr (p, ',');
|
|
|
825 #endif
|
|
|
826 tem = ((!NILP (user) && !pw)
|
|
|
827 ? Qnil
|
|
664
|
828 : make_ext_string ((Extbyte *) p, (q ? q - p : (int) strlen (p)),
|
|
440
|
829 Qnative));
|
|
428
|
830
|
|
|
831 #ifdef AMPERSAND_FULL_NAME
|
|
|
832 if (!NILP (tem))
|
|
|
833 {
|
|
|
834 p = (char *) XSTRING_DATA (tem);
|
|
|
835 q = strchr (p, '&');
|
|
|
836 /* Substitute the login name for the &, upcasing the first character. */
|
|
|
837 if (q)
|
|
|
838 {
|
|
|
839 char *r = (char *) alloca (strlen (p) + XSTRING_LENGTH (user_name) + 1);
|
|
|
840 memcpy (r, p, q - p);
|
|
|
841 r[q - p] = 0;
|
|
|
842 strcat (r, (char *) XSTRING_DATA (user_name));
|
|
|
843 /* #### current_buffer dependency! */
|
|
|
844 r[q - p] = UPCASE (current_buffer, r[q - p]);
|
|
|
845 strcat (r, q + 1);
|
|
|
846 tem = build_string (r);
|
|
|
847 }
|
|
|
848 }
|
|
|
849 #endif /* AMPERSAND_FULL_NAME */
|
|
|
850
|
|
|
851 return tem;
|
|
|
852 }
|
|
|
853
|
|
440
|
854 static Extbyte *cached_home_directory;
|
|
428
|
855
|
|
|
856 void
|
|
|
857 uncache_home_directory (void)
|
|
|
858 {
|
|
|
859 cached_home_directory = NULL; /* in some cases, this may cause the leaking
|
|
|
860 of a few bytes */
|
|
|
861 }
|
|
|
862
|
|
442
|
863 /* !!#### not Mule correct. */
|
|
|
864
|
|
428
|
865 /* Returns the home directory, in external format */
|
|
440
|
866 Extbyte *
|
|
428
|
867 get_home_directory (void)
|
|
|
868 {
|
|
442
|
869 /* !!#### this is hopelessly bogus. Rule #1: Do not make any assumptions
|
|
|
870 about what format an external string is in. Could be Unicode, for all
|
|
|
871 we know, and then all the operations below are totally bogus.
|
|
|
872 Instead, convert all data to internal format *right* at the juncture
|
|
|
873 between XEmacs and the outside world, the very moment we first get
|
|
|
874 the data. --ben */
|
|
428
|
875 int output_home_warning = 0;
|
|
|
876
|
|
|
877 if (cached_home_directory == NULL)
|
|
|
878 {
|
|
440
|
879 if ((cached_home_directory = (Extbyte *) getenv("HOME")) == NULL)
|
|
428
|
880 {
|
|
442
|
881 #if defined(WIN32_NATIVE)
|
|
440
|
882 char *homedrive, *homepath;
|
|
428
|
883
|
|
|
884 if ((homedrive = getenv("HOMEDRIVE")) != NULL &&
|
|
|
885 (homepath = getenv("HOMEPATH")) != NULL)
|
|
|
886 {
|
|
|
887 cached_home_directory =
|
|
440
|
888 (Extbyte *) xmalloc (strlen (homedrive) +
|
|
|
889 strlen (homepath) + 1);
|
|
|
890 sprintf((char *) cached_home_directory, "%s%s",
|
|
|
891 homedrive,
|
|
|
892 homepath);
|
|
428
|
893 }
|
|
|
894 else
|
|
|
895 {
|
|
442
|
896 # if 0 /* changed by ben. This behavior absolutely stinks, and the
|
|
|
897 possibility being addressed here occurs quite commonly.
|
|
|
898 Using the current directory makes absolutely no sense. */
|
|
428
|
899 /*
|
|
|
900 * Use the current directory.
|
|
|
901 * This preserves the existing XEmacs behavior, but is different
|
|
|
902 * from NT Emacs.
|
|
|
903 */
|
|
|
904 if (initial_directory[0] != '\0')
|
|
|
905 {
|
|
442
|
906 cached_home_directory = (Extbyte*) initial_directory;
|
|
428
|
907 }
|
|
|
908 else
|
|
|
909 {
|
|
|
910 /* This will probably give the wrong value */
|
|
442
|
911 cached_home_directory = (Extbyte*) getcwd (NULL, 0);
|
|
428
|
912 }
|
|
|
913 # else
|
|
|
914 /*
|
|
|
915 * This is NT Emacs behavior
|
|
|
916 */
|
|
440
|
917 cached_home_directory = (Extbyte *) "C:\\";
|
|
428
|
918 output_home_warning = 1;
|
|
|
919 # endif
|
|
|
920 }
|
|
442
|
921 #else /* !WIN32_NATIVE */
|
|
428
|
922 /*
|
|
|
923 * Unix, typically.
|
|
|
924 * Using "/" isn't quite right, but what should we do?
|
|
|
925 * We probably should try to extract pw_dir from /etc/passwd,
|
|
|
926 * before falling back to this.
|
|
|
927 */
|
|
440
|
928 cached_home_directory = (Extbyte *) "/";
|
|
428
|
929 output_home_warning = 1;
|
|
442
|
930 #endif /* !WIN32_NATIVE */
|
|
428
|
931 }
|
|
|
932 if (initialized && output_home_warning)
|
|
|
933 {
|
|
|
934 warn_when_safe (Quser_files_and_directories, Qwarning, "\n"
|
|
|
935 " XEmacs was unable to determine a good value for the user's $HOME\n"
|
|
|
936 " directory, and will be using the value:\n"
|
|
|
937 " %s\n"
|
|
|
938 " This is probably incorrect.",
|
|
|
939 cached_home_directory
|
|
|
940 );
|
|
|
941 }
|
|
|
942 }
|
|
|
943 return cached_home_directory;
|
|
|
944 }
|
|
|
945
|
|
|
946 DEFUN ("user-home-directory", Fuser_home_directory, 0, 0, 0, /*
|
|
|
947 Return the user's home directory, as a string.
|
|
|
948 */
|
|
|
949 ())
|
|
|
950 {
|
|
440
|
951 Extbyte *path = get_home_directory ();
|
|
428
|
952
|
|
|
953 return path == NULL ? Qnil :
|
|
|
954 Fexpand_file_name (Fsubstitute_in_file_name
|
|
440
|
955 (build_ext_string ((char *) path, Qfile_name)),
|
|
428
|
956 Qnil);
|
|
|
957 }
|
|
|
958
|
|
|
959 DEFUN ("system-name", Fsystem_name, 0, 0, 0, /*
|
|
|
960 Return the name of the machine you are running on, as a string.
|
|
|
961 */
|
|
|
962 ())
|
|
|
963 {
|
|
|
964 return Fcopy_sequence (Vsystem_name);
|
|
|
965 }
|
|
|
966
|
|
|
967 DEFUN ("emacs-pid", Femacs_pid, 0, 0, 0, /*
|
|
|
968 Return the process ID of Emacs, as an integer.
|
|
|
969 */
|
|
|
970 ())
|
|
|
971 {
|
|
|
972 return make_int (getpid ());
|
|
|
973 }
|
|
|
974
|
|
|
975 DEFUN ("current-time", Fcurrent_time, 0, 0, 0, /*
|
|
|
976 Return the current time, as the number of seconds since 1970-01-01 00:00:00.
|
|
|
977 The time is returned as a list of three integers. The first has the
|
|
|
978 most significant 16 bits of the seconds, while the second has the
|
|
|
979 least significant 16 bits. The third integer gives the microsecond
|
|
|
980 count.
|
|
|
981
|
|
|
982 The microsecond count is zero on systems that do not provide
|
|
|
983 resolution finer than a second.
|
|
|
984 */
|
|
|
985 ())
|
|
|
986 {
|
|
|
987 EMACS_TIME t;
|
|
|
988
|
|
|
989 EMACS_GET_TIME (t);
|
|
|
990 return list3 (make_int ((EMACS_SECS (t) >> 16) & 0xffff),
|
|
|
991 make_int ((EMACS_SECS (t) >> 0) & 0xffff),
|
|
|
992 make_int (EMACS_USECS (t)));
|
|
|
993 }
|
|
|
994
|
|
|
995 DEFUN ("current-process-time", Fcurrent_process_time, 0, 0, 0, /*
|
|
|
996 Return the amount of time used by this XEmacs process so far.
|
|
|
997 The return value is a list of three floating-point numbers, expressing
|
|
|
998 the user, system, and real times used by the process. The user time
|
|
|
999 measures the time actually spent by the CPU executing the code in this
|
|
|
1000 process. The system time measures time spent by the CPU executing kernel
|
|
|
1001 code on behalf of this process (e.g. I/O requests made by the process).
|
|
|
1002
|
|
|
1003 Note that the user and system times measure processor time, as opposed
|
|
|
1004 to real time, and only accrue when the processor is actually doing
|
|
|
1005 something: Time spent in an idle wait (waiting for user events to come
|
|
|
1006 in or for I/O on a disk drive or other device to complete) does not
|
|
|
1007 count. Thus, the user and system times will often be considerably
|
|
|
1008 less than the real time.
|
|
|
1009
|
|
|
1010 Some systems do not allow the user and system times to be distinguished.
|
|
|
1011 In this case, the user time will be the total processor time used by
|
|
|
1012 the process, and the system time will be 0.
|
|
|
1013
|
|
|
1014 Some systems do not allow the real and processor times to be distinguished.
|
|
|
1015 In this case, the user and real times will be the same and the system
|
|
|
1016 time will be 0.
|
|
|
1017 */
|
|
|
1018 ())
|
|
|
1019 {
|
|
|
1020 double user, sys, real;
|
|
|
1021
|
|
|
1022 get_process_times (&user, &sys, &real);
|
|
|
1023 return list3 (make_float (user), make_float (sys), make_float (real));
|
|
|
1024 }
|
|
|
1025
|
|
|
1026
|
|
|
1027 int lisp_to_time (Lisp_Object specified_time, time_t *result);
|
|
|
1028 int
|
|
|
1029 lisp_to_time (Lisp_Object specified_time, time_t *result)
|
|
|
1030 {
|
|
|
1031 Lisp_Object high, low;
|
|
|
1032
|
|
|
1033 if (NILP (specified_time))
|
|
|
1034 return time (result) != -1;
|
|
|
1035
|
|
|
1036 CHECK_CONS (specified_time);
|
|
|
1037 high = XCAR (specified_time);
|
|
|
1038 low = XCDR (specified_time);
|
|
|
1039 if (CONSP (low))
|
|
|
1040 low = XCAR (low);
|
|
|
1041 CHECK_INT (high);
|
|
|
1042 CHECK_INT (low);
|
|
|
1043 *result = (XINT (high) << 16) + (XINT (low) & 0xffff);
|
|
|
1044 return *result >> 16 == XINT (high);
|
|
|
1045 }
|
|
|
1046
|
|
|
1047 Lisp_Object time_to_lisp (time_t the_time);
|
|
|
1048 Lisp_Object
|
|
|
1049 time_to_lisp (time_t the_time)
|
|
|
1050 {
|
|
|
1051 unsigned int item = (unsigned int) the_time;
|
|
|
1052 return Fcons (make_int (item >> 16), make_int (item & 0xffff));
|
|
|
1053 }
|
|
|
1054
|
|
442
|
1055 size_t emacs_strftime (char *string, size_t max, const char *format,
|
|
|
1056 const struct tm *tm);
|
|
|
1057 static long difftm (const struct tm *a, const struct tm *b);
|
|
428
|
1058
|
|
|
1059
|
|
|
1060 DEFUN ("format-time-string", Fformat_time_string, 1, 2, 0, /*
|
|
|
1061 Use FORMAT-STRING to format the time TIME.
|
|
|
1062 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from
|
|
|
1063 `current-time' and `file-attributes'. If TIME is not specified it
|
|
|
1064 defaults to the current time.
|
|
|
1065 FORMAT-STRING may contain %-sequences to substitute parts of the time.
|
|
|
1066 %a is replaced by the abbreviated name of the day of week.
|
|
|
1067 %A is replaced by the full name of the day of week.
|
|
|
1068 %b is replaced by the abbreviated name of the month.
|
|
|
1069 %B is replaced by the full name of the month.
|
|
|
1070 %c is a synonym for "%x %X".
|
|
|
1071 %C is a locale-specific synonym, which defaults to "%A, %B %e, %Y" in the C locale.
|
|
|
1072 %d is replaced by the day of month, zero-padded.
|
|
|
1073 %D is a synonym for "%m/%d/%y".
|
|
|
1074 %e is replaced by the day of month, blank-padded.
|
|
|
1075 %h is a synonym for "%b".
|
|
|
1076 %H is replaced by the hour (00-23).
|
|
|
1077 %I is replaced by the hour (00-12).
|
|
|
1078 %j is replaced by the day of the year (001-366).
|
|
|
1079 %k is replaced by the hour (0-23), blank padded.
|
|
|
1080 %l is replaced by the hour (1-12), blank padded.
|
|
|
1081 %m is replaced by the month (01-12).
|
|
|
1082 %M is replaced by the minute (00-59).
|
|
|
1083 %n is a synonym for "\\n".
|
|
|
1084 %p is replaced by AM or PM, as appropriate.
|
|
|
1085 %r is a synonym for "%I:%M:%S %p".
|
|
|
1086 %R is a synonym for "%H:%M".
|
|
|
1087 %s is replaced by the time in seconds since 00:00:00, Jan 1, 1970 (a
|
|
|
1088 nonstandard extension)
|
|
|
1089 %S is replaced by the second (00-60).
|
|
|
1090 %t is a synonym for "\\t".
|
|
|
1091 %T is a synonym for "%H:%M:%S".
|
|
|
1092 %U is replaced by the week of the year (00-53), first day of week is Sunday.
|
|
|
1093 %w is replaced by the day of week (0-6), Sunday is day 0.
|
|
|
1094 %W is replaced by the week of the year (00-53), first day of week is Monday.
|
|
|
1095 %x is a locale-specific synonym, which defaults to "%D" in the C locale.
|
|
|
1096 %X is a locale-specific synonym, which defaults to "%T" in the C locale.
|
|
|
1097 %y is replaced by the year without century (00-99).
|
|
|
1098 %Y is replaced by the year with century.
|
|
|
1099 %Z is replaced by the time zone abbreviation.
|
|
|
1100
|
|
|
1101 The number of options reflects the `strftime' function.
|
|
|
1102
|
|
|
1103 BUG: If the charset used by the current locale is not ISO 8859-1, the
|
|
|
1104 characters appearing in the day and month names may be incorrect.
|
|
|
1105 */
|
|
|
1106 (format_string, time_))
|
|
|
1107 {
|
|
|
1108 time_t value;
|
|
665
|
1109 Bytecount size;
|
|
428
|
1110
|
|
|
1111 CHECK_STRING (format_string);
|
|
|
1112
|
|
|
1113 if (! lisp_to_time (time_, &value))
|
|
563
|
1114 invalid_argument ("Invalid time specification", Qunbound);
|
|
428
|
1115
|
|
|
1116 /* This is probably enough. */
|
|
|
1117 size = XSTRING_LENGTH (format_string) * 6 + 50;
|
|
|
1118
|
|
|
1119 while (1)
|
|
|
1120 {
|
|
|
1121 char *buf = (char *) alloca (size);
|
|
|
1122 *buf = 1;
|
|
|
1123 if (emacs_strftime (buf, size,
|
|
442
|
1124 (const char *) XSTRING_DATA (format_string),
|
|
428
|
1125 localtime (&value))
|
|
|
1126 || !*buf)
|
|
440
|
1127 return build_ext_string (buf, Qbinary);
|
|
428
|
1128 /* If buffer was too small, make it bigger. */
|
|
|
1129 size *= 2;
|
|
|
1130 }
|
|
|
1131 }
|
|
|
1132
|
|
|
1133 DEFUN ("decode-time", Fdecode_time, 0, 1, 0, /*
|
|
|
1134 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).
|
|
|
1135 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)
|
|
|
1136 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'
|
|
|
1137 to use the current time. The list has the following nine members:
|
|
|
1138 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which
|
|
|
1139 only some operating systems support. MINUTE is an integer between 0 and 59.
|
|
|
1140 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.
|
|
|
1141 MONTH is an integer between 1 and 12. YEAR is an integer indicating the
|
|
|
1142 four-digit year. DOW is the day of week, an integer between 0 and 6, where
|
|
|
1143 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.
|
|
|
1144 ZONE is an integer indicating the number of seconds east of Greenwich.
|
|
|
1145 \(Note that Common Lisp has different meanings for DOW and ZONE.)
|
|
|
1146 */
|
|
|
1147 (specified_time))
|
|
|
1148 {
|
|
|
1149 time_t time_spec;
|
|
|
1150 struct tm save_tm;
|
|
|
1151 struct tm *decoded_time;
|
|
|
1152 Lisp_Object list_args[9];
|
|
|
1153
|
|
|
1154 if (! lisp_to_time (specified_time, &time_spec))
|
|
563
|
1155 invalid_argument ("Invalid time specification", Qunbound);
|
|
428
|
1156
|
|
|
1157 decoded_time = localtime (&time_spec);
|
|
|
1158 list_args[0] = make_int (decoded_time->tm_sec);
|
|
|
1159 list_args[1] = make_int (decoded_time->tm_min);
|
|
|
1160 list_args[2] = make_int (decoded_time->tm_hour);
|
|
|
1161 list_args[3] = make_int (decoded_time->tm_mday);
|
|
|
1162 list_args[4] = make_int (decoded_time->tm_mon + 1);
|
|
|
1163 list_args[5] = make_int (decoded_time->tm_year + 1900);
|
|
|
1164 list_args[6] = make_int (decoded_time->tm_wday);
|
|
|
1165 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil;
|
|
|
1166
|
|
|
1167 /* Make a copy, in case gmtime modifies the struct. */
|
|
|
1168 save_tm = *decoded_time;
|
|
|
1169 decoded_time = gmtime (&time_spec);
|
|
|
1170 if (decoded_time == 0)
|
|
|
1171 list_args[8] = Qnil;
|
|
|
1172 else
|
|
|
1173 list_args[8] = make_int (difftm (&save_tm, decoded_time));
|
|
|
1174 return Flist (9, list_args);
|
|
|
1175 }
|
|
|
1176
|
|
|
1177 static void set_time_zone_rule (char *tzstring);
|
|
|
1178
|
|
707
|
1179 /* from GNU Emacs 21, per Simon Josefsson, modified by stephen
|
|
|
1180 The slight inefficiency is justified since negative times are weird. */
|
|
|
1181 Lisp_Object
|
|
|
1182 make_time (time_t time)
|
|
|
1183 {
|
|
|
1184 return list2 (make_int (time < 0 ? time / 0x10000 : time >> 16),
|
|
|
1185 make_int (time & 0xFFFF));
|
|
|
1186 }
|
|
|
1187
|
|
428
|
1188 DEFUN ("encode-time", Fencode_time, 6, MANY, 0, /*
|
|
|
1189 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.
|
|
|
1190 This is the reverse operation of `decode-time', which see.
|
|
|
1191 ZONE defaults to the current time zone rule. This can
|
|
|
1192 be a string (as from `set-time-zone-rule'), or it can be a list
|
|
|
1193 \(as from `current-time-zone') or an integer (as from `decode-time')
|
|
|
1194 applied without consideration for daylight savings time.
|
|
|
1195
|
|
|
1196 You can pass more than 7 arguments; then the first six arguments
|
|
|
1197 are used as SECOND through YEAR, and the *last* argument is used as ZONE.
|
|
|
1198 The intervening arguments are ignored.
|
|
|
1199 This feature lets (apply 'encode-time (decode-time ...)) work.
|
|
|
1200
|
|
|
1201 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;
|
|
|
1202 for example, a DAY of 0 means the day preceding the given month.
|
|
|
1203 Year numbers less than 100 are treated just like other year numbers.
|
|
|
1204 If you want them to stand for years in this century, you must do that yourself.
|
|
|
1205 */
|
|
|
1206 (int nargs, Lisp_Object *args))
|
|
|
1207 {
|
|
|
1208 time_t the_time;
|
|
|
1209 struct tm tm;
|
|
|
1210 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil;
|
|
|
1211
|
|
|
1212 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */
|
|
|
1213 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */
|
|
|
1214 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */
|
|
|
1215 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */
|
|
|
1216 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */
|
|
|
1217 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */
|
|
|
1218
|
|
|
1219 tm.tm_isdst = -1;
|
|
|
1220
|
|
|
1221 if (CONSP (zone))
|
|
|
1222 zone = XCAR (zone);
|
|
|
1223 if (NILP (zone))
|
|
|
1224 the_time = mktime (&tm);
|
|
|
1225 else
|
|
|
1226 {
|
|
|
1227 char tzbuf[100];
|
|
|
1228 char *tzstring;
|
|
|
1229 char **oldenv = environ, **newenv;
|
|
|
1230
|
|
|
1231 if (STRINGP (zone))
|
|
|
1232 tzstring = (char *) XSTRING_DATA (zone);
|
|
|
1233 else if (INTP (zone))
|
|
|
1234 {
|
|
|
1235 int abszone = abs (XINT (zone));
|
|
|
1236 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0),
|
|
|
1237 abszone / (60*60), (abszone/60) % 60, abszone % 60);
|
|
|
1238 tzstring = tzbuf;
|
|
|
1239 }
|
|
|
1240 else
|
|
563
|
1241 invalid_argument ("Invalid time zone specification", Qunbound);
|
|
428
|
1242
|
|
|
1243 /* Set TZ before calling mktime; merely adjusting mktime's returned
|
|
|
1244 value doesn't suffice, since that would mishandle leap seconds. */
|
|
|
1245 set_time_zone_rule (tzstring);
|
|
|
1246
|
|
|
1247 the_time = mktime (&tm);
|
|
|
1248
|
|
|
1249 /* Restore TZ to previous value. */
|
|
|
1250 newenv = environ;
|
|
|
1251 environ = oldenv;
|
|
|
1252 free (newenv);
|
|
|
1253 #ifdef LOCALTIME_CACHE
|
|
|
1254 tzset ();
|
|
|
1255 #endif
|
|
|
1256 }
|
|
|
1257
|
|
|
1258 if (the_time == (time_t) -1)
|
|
563
|
1259 invalid_argument ("Specified time is not representable", Qunbound);
|
|
428
|
1260
|
|
707
|
1261 return make_time (the_time);
|
|
428
|
1262 }
|
|
|
1263
|
|
|
1264 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /*
|
|
|
1265 Return the current time, as a human-readable string.
|
|
|
1266 Programs can use this function to decode a time,
|
|
|
1267 since the number of columns in each field is fixed.
|
|
|
1268 The format is `Sun Sep 16 01:03:52 1973'.
|
|
|
1269 If an argument is given, it specifies a time to format
|
|
|
1270 instead of the current time. The argument should have the form:
|
|
|
1271 (HIGH . LOW)
|
|
|
1272 or the form:
|
|
|
1273 (HIGH LOW . IGNORED).
|
|
|
1274 Thus, you can use times obtained from `current-time'
|
|
|
1275 and from `file-attributes'.
|
|
|
1276 */
|
|
|
1277 (specified_time))
|
|
|
1278 {
|
|
|
1279 time_t value;
|
|
442
|
1280 char *the_ctime;
|
|
647
|
1281 EMACS_INT len; /* this is what make_ext_string() accepts; ####
|
|
665
|
1282 should it be an Bytecount? */
|
|
428
|
1283
|
|
|
1284 if (! lisp_to_time (specified_time, &value))
|
|
|
1285 value = -1;
|
|
442
|
1286 the_ctime = ctime (&value);
|
|
428
|
1287
|
|
442
|
1288 /* ctime is documented as always returning a "\n\0"-terminated
|
|
|
1289 26-byte American time string, but let's be careful anyways. */
|
|
|
1290 for (len = 0; the_ctime[len] != '\n' && the_ctime[len] != '\0'; len++)
|
|
|
1291 ;
|
|
428
|
1292
|
|
442
|
1293 return make_ext_string ((Extbyte *) the_ctime, len, Qbinary);
|
|
428
|
1294 }
|
|
|
1295
|
|
|
1296 #define TM_YEAR_ORIGIN 1900
|
|
|
1297
|
|
|
1298 /* Yield A - B, measured in seconds. */
|
|
|
1299 static long
|
|
442
|
1300 difftm (const struct tm *a, const struct tm *b)
|
|
428
|
1301 {
|
|
|
1302 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1);
|
|
|
1303 int by = b->tm_year + (TM_YEAR_ORIGIN - 1);
|
|
|
1304 /* Some compilers can't handle this as a single return statement. */
|
|
|
1305 long days = (
|
|
|
1306 /* difference in day of year */
|
|
|
1307 a->tm_yday - b->tm_yday
|
|
|
1308 /* + intervening leap days */
|
|
|
1309 + ((ay >> 2) - (by >> 2))
|
|
|
1310 - (ay/100 - by/100)
|
|
|
1311 + ((ay/100 >> 2) - (by/100 >> 2))
|
|
|
1312 /* + difference in years * 365 */
|
|
|
1313 + (long)(ay-by) * 365
|
|
|
1314 );
|
|
|
1315 return (60*(60*(24*days + (a->tm_hour - b->tm_hour))
|
|
|
1316 + (a->tm_min - b->tm_min))
|
|
|
1317 + (a->tm_sec - b->tm_sec));
|
|
|
1318 }
|
|
|
1319
|
|
|
1320 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /*
|
|
|
1321 Return the offset and name for the local time zone.
|
|
|
1322 This returns a list of the form (OFFSET NAME).
|
|
|
1323 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).
|
|
|
1324 A negative value means west of Greenwich.
|
|
|
1325 NAME is a string giving the name of the time zone.
|
|
|
1326 If an argument is given, it specifies when the time zone offset is determined
|
|
|
1327 instead of using the current time. The argument should have the form:
|
|
|
1328 (HIGH . LOW)
|
|
|
1329 or the form:
|
|
|
1330 (HIGH LOW . IGNORED).
|
|
|
1331 Thus, you can use times obtained from `current-time'
|
|
|
1332 and from `file-attributes'.
|
|
|
1333
|
|
|
1334 Some operating systems cannot provide all this information to Emacs;
|
|
|
1335 in this case, `current-time-zone' returns a list containing nil for
|
|
|
1336 the data it can't find.
|
|
|
1337 */
|
|
|
1338 (specified_time))
|
|
|
1339 {
|
|
|
1340 time_t value;
|
|
|
1341 struct tm *t = NULL;
|
|
|
1342
|
|
|
1343 if (lisp_to_time (specified_time, &value)
|
|
|
1344 && (t = gmtime (&value)) != 0)
|
|
|
1345 {
|
|
|
1346 struct tm gmt = *t; /* Make a copy, in case localtime modifies *t. */
|
|
|
1347 long offset;
|
|
|
1348 char *s, buf[6];
|
|
|
1349
|
|
|
1350 t = localtime (&value);
|
|
|
1351 offset = difftm (t, &gmt);
|
|
|
1352 s = 0;
|
|
|
1353 #ifdef HAVE_TM_ZONE
|
|
|
1354 if (t->tm_zone)
|
|
|
1355 s = (char *)t->tm_zone;
|
|
|
1356 #else /* not HAVE_TM_ZONE */
|
|
|
1357 #ifdef HAVE_TZNAME
|
|
|
1358 if (t->tm_isdst == 0 || t->tm_isdst == 1)
|
|
|
1359 s = tzname[t->tm_isdst];
|
|
|
1360 #endif
|
|
|
1361 #endif /* not HAVE_TM_ZONE */
|
|
|
1362 if (!s)
|
|
|
1363 {
|
|
|
1364 /* No local time zone name is available; use "+-NNNN" instead. */
|
|
|
1365 int am = (offset < 0 ? -offset : offset) / 60;
|
|
|
1366 sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60);
|
|
|
1367 s = buf;
|
|
|
1368 }
|
|
|
1369 return list2 (make_int (offset), build_string (s));
|
|
|
1370 }
|
|
|
1371 else
|
|
|
1372 return list2 (Qnil, Qnil);
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 #ifdef LOCALTIME_CACHE
|
|
|
1376
|
|
|
1377 /* These two values are known to load tz files in buggy implementations,
|
|
|
1378 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2.
|
|
|
1379 Their values shouldn't matter in non-buggy implementations.
|
|
|
1380 We don't use string literals for these strings,
|
|
|
1381 since if a string in the environment is in readonly
|
|
|
1382 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
|
|
|
1383 See Sun bugs 1113095 and 1114114, ``Timezone routines
|
|
|
1384 improperly modify environment''. */
|
|
|
1385
|
|
|
1386 static char set_time_zone_rule_tz1[] = "TZ=GMT+0";
|
|
|
1387 static char set_time_zone_rule_tz2[] = "TZ=GMT+1";
|
|
|
1388
|
|
|
1389 #endif
|
|
|
1390
|
|
|
1391 /* Set the local time zone rule to TZSTRING.
|
|
|
1392 This allocates memory into `environ', which it is the caller's
|
|
|
1393 responsibility to free. */
|
|
|
1394 static void
|
|
|
1395 set_time_zone_rule (char *tzstring)
|
|
|
1396 {
|
|
|
1397 int envptrs;
|
|
|
1398 char **from, **to, **newenv;
|
|
|
1399
|
|
|
1400 for (from = environ; *from; from++)
|
|
|
1401 continue;
|
|
|
1402 envptrs = from - environ + 2;
|
|
|
1403 newenv = to = (char **) xmalloc (envptrs * sizeof (char *)
|
|
|
1404 + (tzstring ? strlen (tzstring) + 4 : 0));
|
|
|
1405 if (tzstring)
|
|
|
1406 {
|
|
|
1407 char *t = (char *) (to + envptrs);
|
|
|
1408 strcpy (t, "TZ=");
|
|
|
1409 strcat (t, tzstring);
|
|
|
1410 *to++ = t;
|
|
|
1411 }
|
|
|
1412
|
|
|
1413 for (from = environ; *from; from++)
|
|
|
1414 if (strncmp (*from, "TZ=", 3) != 0)
|
|
|
1415 *to++ = *from;
|
|
|
1416 *to = 0;
|
|
|
1417
|
|
|
1418 environ = newenv;
|
|
|
1419
|
|
|
1420 #ifdef LOCALTIME_CACHE
|
|
|
1421 {
|
|
|
1422 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
|
|
|
1423 "US/Pacific" that loads a tz file, then changes to a value like
|
|
|
1424 "XXX0" that does not load a tz file, and then changes back to
|
|
|
1425 its original value, the last change is (incorrectly) ignored.
|
|
|
1426 Also, if TZ changes twice in succession to values that do
|
|
|
1427 not load a tz file, tzset can dump core (see Sun bug#1225179).
|
|
|
1428 The following code works around these bugs. */
|
|
|
1429
|
|
|
1430 if (tzstring)
|
|
|
1431 {
|
|
|
1432 /* Temporarily set TZ to a value that loads a tz file
|
|
|
1433 and that differs from tzstring. */
|
|
|
1434 char *tz = *newenv;
|
|
|
1435 *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0
|
|
|
1436 ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1);
|
|
|
1437 tzset ();
|
|
|
1438 *newenv = tz;
|
|
|
1439 }
|
|
|
1440 else
|
|
|
1441 {
|
|
|
1442 /* The implied tzstring is unknown, so temporarily set TZ to
|
|
|
1443 two different values that each load a tz file. */
|
|
|
1444 *to = set_time_zone_rule_tz1;
|
|
|
1445 to[1] = 0;
|
|
|
1446 tzset ();
|
|
|
1447 *to = set_time_zone_rule_tz2;
|
|
|
1448 tzset ();
|
|
|
1449 *to = 0;
|
|
|
1450 }
|
|
|
1451
|
|
|
1452 /* Now TZ has the desired value, and tzset can be invoked safely. */
|
|
|
1453 }
|
|
|
1454
|
|
|
1455 tzset ();
|
|
|
1456 #endif
|
|
|
1457 }
|
|
|
1458
|
|
|
1459 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /*
|
|
|
1460 Set the local time zone using TZ, a string specifying a time zone rule.
|
|
|
1461 If TZ is nil, use implementation-defined default time zone information.
|
|
|
1462 */
|
|
|
1463 (tz))
|
|
|
1464 {
|
|
|
1465 char *tzstring;
|
|
|
1466
|
|
|
1467 if (NILP (tz))
|
|
|
1468 tzstring = 0;
|
|
|
1469 else
|
|
|
1470 {
|
|
|
1471 CHECK_STRING (tz);
|
|
|
1472 tzstring = (char *) XSTRING_DATA (tz);
|
|
|
1473 }
|
|
|
1474
|
|
|
1475 set_time_zone_rule (tzstring);
|
|
|
1476 if (environbuf)
|
|
|
1477 xfree (environbuf);
|
|
|
1478 environbuf = environ;
|
|
|
1479
|
|
|
1480 return Qnil;
|
|
|
1481 }
|
|
|
1482
|
|
|
1483
|
|
|
1484 void
|
|
|
1485 buffer_insert1 (struct buffer *buf, Lisp_Object arg)
|
|
|
1486 {
|
|
|
1487 /* This function can GC */
|
|
|
1488 struct gcpro gcpro1;
|
|
|
1489 GCPRO1 (arg);
|
|
|
1490 retry:
|
|
|
1491 if (CHAR_OR_CHAR_INTP (arg))
|
|
|
1492 {
|
|
|
1493 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg));
|
|
|
1494 }
|
|
|
1495 else if (STRINGP (arg))
|
|
|
1496 {
|
|
|
1497 buffer_insert_lisp_string (buf, arg);
|
|
|
1498 }
|
|
|
1499 else
|
|
|
1500 {
|
|
|
1501 arg = wrong_type_argument (Qchar_or_string_p, arg);
|
|
|
1502 goto retry;
|
|
|
1503 }
|
|
|
1504 UNGCPRO;
|
|
|
1505 }
|
|
|
1506
|
|
|
1507
|
|
|
1508 /* Callers passing one argument to Finsert need not gcpro the
|
|
|
1509 argument "array", since the only element of the array will
|
|
|
1510 not be used after calling insert_emacs_char or insert_lisp_string,
|
|
|
1511 so we don't care if it gets trashed. */
|
|
|
1512
|
|
|
1513 DEFUN ("insert", Finsert, 0, MANY, 0, /*
|
|
|
1514 Insert the arguments, either strings or characters, at point.
|
|
|
1515 Point moves forward so that it ends up after the inserted text.
|
|
|
1516 Any other markers at the point of insertion remain before the text.
|
|
|
1517 If a string has non-null string-extent-data, new extents will be created.
|
|
|
1518 */
|
|
|
1519 (int nargs, Lisp_Object *args))
|
|
|
1520 {
|
|
|
1521 /* This function can GC */
|
|
|
1522 REGISTER int argnum;
|
|
|
1523
|
|
|
1524 for (argnum = 0; argnum < nargs; argnum++)
|
|
|
1525 {
|
|
|
1526 buffer_insert1 (current_buffer, args[argnum]);
|
|
|
1527 }
|
|
|
1528
|
|
|
1529 return Qnil;
|
|
|
1530 }
|
|
|
1531
|
|
|
1532 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /*
|
|
|
1533 Insert strings or characters at point, relocating markers after the text.
|
|
|
1534 Point moves forward so that it ends up after the inserted text.
|
|
|
1535 Any other markers at the point of insertion also end up after the text.
|
|
|
1536 */
|
|
|
1537 (int nargs, Lisp_Object *args))
|
|
|
1538 {
|
|
|
1539 /* This function can GC */
|
|
|
1540 REGISTER int argnum;
|
|
|
1541 REGISTER Lisp_Object tem;
|
|
|
1542
|
|
|
1543 for (argnum = 0; argnum < nargs; argnum++)
|
|
|
1544 {
|
|
|
1545 tem = args[argnum];
|
|
|
1546 retry:
|
|
|
1547 if (CHAR_OR_CHAR_INTP (tem))
|
|
|
1548 {
|
|
|
1549 buffer_insert_emacs_char_1 (current_buffer, -1,
|
|
|
1550 XCHAR_OR_CHAR_INT (tem),
|
|
|
1551 INSDEL_BEFORE_MARKERS);
|
|
|
1552 }
|
|
|
1553 else if (STRINGP (tem))
|
|
|
1554 {
|
|
|
1555 buffer_insert_lisp_string_1 (current_buffer, -1, tem,
|
|
|
1556 INSDEL_BEFORE_MARKERS);
|
|
|
1557 }
|
|
|
1558 else
|
|
|
1559 {
|
|
|
1560 tem = wrong_type_argument (Qchar_or_string_p, tem);
|
|
|
1561 goto retry;
|
|
|
1562 }
|
|
|
1563 }
|
|
|
1564 return Qnil;
|
|
|
1565 }
|
|
|
1566
|
|
|
1567 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /*
|
|
|
1568 Insert STRING into BUFFER at BUFFER's point.
|
|
|
1569 Point moves forward so that it ends up after the inserted text.
|
|
|
1570 Any other markers at the point of insertion remain before the text.
|
|
|
1571 If a string has non-null string-extent-data, new extents will be created.
|
|
|
1572 BUFFER defaults to the current buffer.
|
|
|
1573 */
|
|
|
1574 (string, buffer))
|
|
|
1575 {
|
|
|
1576 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1577 CHECK_STRING (string);
|
|
|
1578 buffer_insert_lisp_string (b, string);
|
|
|
1579 return Qnil;
|
|
|
1580 }
|
|
|
1581
|
|
|
1582 /* Third argument in FSF is INHERIT:
|
|
|
1583
|
|
|
1584 "The optional third arg INHERIT, if non-nil, says to inherit text properties
|
|
|
1585 from adjoining text, if those properties are sticky."
|
|
|
1586
|
|
|
1587 Jamie thinks this is bogus. */
|
|
|
1588
|
|
|
1589
|
|
|
1590 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /*
|
|
444
|
1591 Insert COUNT copies of CHARACTER into BUFFER.
|
|
428
|
1592 Point and all markers are affected as in the function `insert'.
|
|
|
1593 COUNT defaults to 1 if omitted.
|
|
|
1594 The optional third arg IGNORED is INHERIT under FSF Emacs.
|
|
|
1595 This is highly bogus, however, and XEmacs always behaves as if
|
|
|
1596 `t' were passed to INHERIT.
|
|
|
1597 The optional fourth arg BUFFER specifies the buffer to insert the
|
|
|
1598 text into. If BUFFER is nil, the current buffer is assumed.
|
|
|
1599 */
|
|
444
|
1600 (character, count, ignored, buffer))
|
|
428
|
1601 {
|
|
|
1602 /* This function can GC */
|
|
665
|
1603 REGISTER Intbyte *string;
|
|
428
|
1604 REGISTER int slen;
|
|
|
1605 REGISTER int i, j;
|
|
|
1606 REGISTER Bytecount n;
|
|
|
1607 REGISTER Bytecount charlen;
|
|
665
|
1608 Intbyte str[MAX_EMCHAR_LEN];
|
|
428
|
1609 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1610 int cou;
|
|
|
1611
|
|
444
|
1612 CHECK_CHAR_COERCE_INT (character);
|
|
428
|
1613 if (NILP (count))
|
|
|
1614 cou = 1;
|
|
|
1615 else
|
|
|
1616 {
|
|
|
1617 CHECK_INT (count);
|
|
|
1618 cou = XINT (count);
|
|
|
1619 }
|
|
|
1620
|
|
444
|
1621 charlen = set_charptr_emchar (str, XCHAR (character));
|
|
428
|
1622 n = cou * charlen;
|
|
|
1623 if (n <= 0)
|
|
|
1624 return Qnil;
|
|
|
1625 slen = min (n, 768);
|
|
665
|
1626 string = alloca_array (Intbyte, slen);
|
|
428
|
1627 /* Write as many copies of the character into the temp string as will fit. */
|
|
|
1628 for (i = 0; i + charlen <= slen; i += charlen)
|
|
|
1629 for (j = 0; j < charlen; j++)
|
|
|
1630 string[i + j] = str[j];
|
|
|
1631 slen = i;
|
|
|
1632 while (n >= slen)
|
|
|
1633 {
|
|
|
1634 buffer_insert_raw_string (b, string, slen);
|
|
|
1635 n -= slen;
|
|
|
1636 }
|
|
|
1637 if (n > 0)
|
|
|
1638 #if 0 /* FSFmacs bogosity */
|
|
|
1639 {
|
|
|
1640 if (!NILP (inherit))
|
|
|
1641 insert_and_inherit (string, n);
|
|
|
1642 else
|
|
|
1643 insert (string, n);
|
|
|
1644 }
|
|
|
1645 #else
|
|
|
1646 buffer_insert_raw_string (b, string, n);
|
|
|
1647 #endif
|
|
|
1648
|
|
|
1649 return Qnil;
|
|
|
1650 }
|
|
|
1651
|
|
|
1652
|
|
|
1653 /* Making strings from buffer contents. */
|
|
|
1654
|
|
|
1655 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /*
|
|
|
1656 Return the contents of part of BUFFER as a string.
|
|
|
1657 The two arguments START and END are character positions;
|
|
|
1658 they can be in either order. If omitted, they default to the beginning
|
|
|
1659 and end of BUFFER, respectively.
|
|
|
1660 If there are duplicable extents in the region, the string remembers
|
|
|
1661 them in its extent data.
|
|
|
1662 If BUFFER is nil, the current buffer is assumed.
|
|
|
1663 */
|
|
|
1664 (start, end, buffer))
|
|
|
1665 {
|
|
|
1666 /* This function can GC */
|
|
665
|
1667 Charbpos begv, zv;
|
|
428
|
1668 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1669
|
|
|
1670 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
|
|
|
1671 return make_string_from_buffer (b, begv, zv - begv);
|
|
|
1672 }
|
|
|
1673
|
|
|
1674 /* It might make more sense to name this
|
|
|
1675 `buffer-substring-no-extents', but this name is FSFmacs-compatible,
|
|
|
1676 and what the function does is probably good enough for what the
|
|
|
1677 user-code will typically want to use it for. */
|
|
|
1678 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /*
|
|
444
|
1679 Return the text from START to END as a string, without copying the extents.
|
|
428
|
1680 */
|
|
|
1681 (start, end, buffer))
|
|
|
1682 {
|
|
|
1683 /* This function can GC */
|
|
665
|
1684 Charbpos begv, zv;
|
|
428
|
1685 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1686
|
|
|
1687 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
|
|
|
1688 return make_string_from_buffer_no_extents (b, begv, zv - begv);
|
|
|
1689 }
|
|
|
1690
|
|
|
1691 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /*
|
|
|
1692 Insert before point a substring of the contents of buffer BUFFER.
|
|
|
1693 BUFFER may be a buffer or a buffer name.
|
|
|
1694 Arguments START and END are character numbers specifying the substring.
|
|
|
1695 They default to the beginning and the end of BUFFER.
|
|
|
1696 */
|
|
|
1697 (buffer, start, end))
|
|
|
1698 {
|
|
|
1699 /* This function can GC */
|
|
665
|
1700 Charbpos b, e;
|
|
428
|
1701 struct buffer *bp;
|
|
|
1702
|
|
|
1703 bp = XBUFFER (get_buffer (buffer, 1));
|
|
|
1704 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL);
|
|
|
1705
|
|
|
1706 if (b < e)
|
|
|
1707 buffer_insert_from_buffer (current_buffer, bp, b, e - b);
|
|
|
1708
|
|
|
1709 return Qnil;
|
|
|
1710 }
|
|
|
1711
|
|
|
1712 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /*
|
|
|
1713 Compare two substrings of two buffers; return result as number.
|
|
|
1714 the value is -N if first string is less after N-1 chars,
|
|
|
1715 +N if first string is greater after N-1 chars, or 0 if strings match.
|
|
|
1716 Each substring is represented as three arguments: BUFFER, START and END.
|
|
|
1717 That makes six args in all, three for each substring.
|
|
|
1718
|
|
|
1719 The value of `case-fold-search' in the current buffer
|
|
|
1720 determines whether case is significant or ignored.
|
|
|
1721 */
|
|
|
1722 (buffer1, start1, end1, buffer2, start2, end2))
|
|
|
1723 {
|
|
665
|
1724 Charbpos begp1, endp1, begp2, endp2;
|
|
428
|
1725 REGISTER Charcount len1, len2, length, i;
|
|
|
1726 struct buffer *bp1, *bp2;
|
|
|
1727 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ?
|
|
446
|
1728 XCASE_TABLE_CANON (current_buffer->case_table) : Qnil);
|
|
428
|
1729
|
|
|
1730 /* Find the first buffer and its substring. */
|
|
|
1731
|
|
|
1732 bp1 = decode_buffer (buffer1, 1);
|
|
|
1733 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL);
|
|
|
1734
|
|
|
1735 /* Likewise for second substring. */
|
|
|
1736
|
|
|
1737 bp2 = decode_buffer (buffer2, 1);
|
|
|
1738 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL);
|
|
|
1739
|
|
|
1740 len1 = endp1 - begp1;
|
|
|
1741 len2 = endp2 - begp2;
|
|
|
1742 length = len1;
|
|
|
1743 if (len2 < length)
|
|
|
1744 length = len2;
|
|
|
1745
|
|
|
1746 for (i = 0; i < length; i++)
|
|
|
1747 {
|
|
|
1748 Emchar c1 = BUF_FETCH_CHAR (bp1, begp1 + i);
|
|
|
1749 Emchar c2 = BUF_FETCH_CHAR (bp2, begp2 + i);
|
|
|
1750 if (!NILP (trt))
|
|
|
1751 {
|
|
|
1752 c1 = TRT_TABLE_OF (trt, c1);
|
|
|
1753 c2 = TRT_TABLE_OF (trt, c2);
|
|
|
1754 }
|
|
|
1755 if (c1 < c2)
|
|
|
1756 return make_int (- 1 - i);
|
|
|
1757 if (c1 > c2)
|
|
|
1758 return make_int (i + 1);
|
|
|
1759 }
|
|
|
1760
|
|
|
1761 /* The strings match as far as they go.
|
|
|
1762 If one is shorter, that one is less. */
|
|
|
1763 if (length < len1)
|
|
|
1764 return make_int (length + 1);
|
|
|
1765 else if (length < len2)
|
|
|
1766 return make_int (- length - 1);
|
|
|
1767
|
|
|
1768 /* Same length too => they are equal. */
|
|
|
1769 return Qzero;
|
|
|
1770 }
|
|
|
1771
|
|
|
1772
|
|
|
1773 static Lisp_Object
|
|
|
1774 subst_char_in_region_unwind (Lisp_Object arg)
|
|
|
1775 {
|
|
|
1776 XBUFFER (XCAR (arg))->undo_list = XCDR (arg);
|
|
|
1777 return Qnil;
|
|
|
1778 }
|
|
|
1779
|
|
|
1780 static Lisp_Object
|
|
|
1781 subst_char_in_region_unwind_1 (Lisp_Object arg)
|
|
|
1782 {
|
|
|
1783 XBUFFER (XCAR (arg))->filename = XCDR (arg);
|
|
|
1784 return Qnil;
|
|
|
1785 }
|
|
|
1786
|
|
|
1787 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /*
|
|
|
1788 From START to END, replace FROMCHAR with TOCHAR each time it occurs.
|
|
|
1789 If optional arg NOUNDO is non-nil, don't record this change for undo
|
|
|
1790 and don't mark the buffer as really changed.
|
|
|
1791 */
|
|
|
1792 (start, end, fromchar, tochar, noundo))
|
|
|
1793 {
|
|
|
1794 /* This function can GC */
|
|
665
|
1795 Charbpos pos, stop;
|
|
428
|
1796 Emchar fromc, toc;
|
|
|
1797 int mc_count;
|
|
|
1798 struct buffer *buf = current_buffer;
|
|
|
1799 int count = specpdl_depth ();
|
|
|
1800
|
|
|
1801 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
|
|
|
1802 CHECK_CHAR_COERCE_INT (fromchar);
|
|
|
1803 CHECK_CHAR_COERCE_INT (tochar);
|
|
|
1804
|
|
|
1805 fromc = XCHAR (fromchar);
|
|
|
1806 toc = XCHAR (tochar);
|
|
|
1807
|
|
|
1808 /* If we don't want undo, turn off putting stuff on the list.
|
|
|
1809 That's faster than getting rid of things,
|
|
|
1810 and it prevents even the entry for a first change.
|
|
|
1811 Also inhibit locking the file. */
|
|
|
1812 if (!NILP (noundo))
|
|
|
1813 {
|
|
|
1814 record_unwind_protect (subst_char_in_region_unwind,
|
|
|
1815 Fcons (Fcurrent_buffer (), buf->undo_list));
|
|
|
1816 buf->undo_list = Qt;
|
|
|
1817 /* Don't do file-locking. */
|
|
|
1818 record_unwind_protect (subst_char_in_region_unwind_1,
|
|
|
1819 Fcons (Fcurrent_buffer (), buf->filename));
|
|
|
1820 buf->filename = Qnil;
|
|
|
1821 }
|
|
|
1822
|
|
|
1823 mc_count = begin_multiple_change (buf, pos, stop);
|
|
|
1824 while (pos < stop)
|
|
|
1825 {
|
|
|
1826 if (BUF_FETCH_CHAR (buf, pos) == fromc)
|
|
|
1827 {
|
|
|
1828 /* There used to be some code here that set the buffer to
|
|
|
1829 unmodified if NOUNDO was specified and there was only
|
|
|
1830 one change to the buffer since it was last saved.
|
|
|
1831 This is a crock of shit, so I'm not duplicating this
|
|
|
1832 behavior. I think this was left over from when
|
|
|
1833 prepare_to_modify_buffer() actually bumped MODIFF,
|
|
|
1834 so that code was supposed to undo this change. --ben */
|
|
|
1835 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0);
|
|
|
1836
|
|
|
1837 /* If noundo is not nil then we don't mark the buffer as
|
|
|
1838 modified. In reality that needs to happen externally
|
|
|
1839 only. Internally redisplay needs to know that the actual
|
|
|
1840 contents it should be displaying have changed. */
|
|
|
1841 if (!NILP (noundo))
|
|
|
1842 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil);
|
|
|
1843 }
|
|
|
1844 pos++;
|
|
|
1845 }
|
|
|
1846 end_multiple_change (buf, mc_count);
|
|
|
1847
|
|
|
1848 unbind_to (count, Qnil);
|
|
|
1849 return Qnil;
|
|
|
1850 }
|
|
|
1851
|
|
|
1852 /* #### Shouldn't this also accept a BUFFER argument, in the good old
|
|
|
1853 XEmacs tradition? */
|
|
|
1854 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /*
|
|
|
1855 Translate characters from START to END according to TABLE.
|
|
|
1856
|
|
|
1857 If TABLE is a string, the Nth character in it is the mapping for the
|
|
|
1858 character with code N.
|
|
|
1859
|
|
|
1860 If TABLE is a vector, its Nth element is the mapping for character
|
|
|
1861 with code N. The values of elements may be characters, strings, or
|
|
|
1862 nil (nil meaning don't replace.)
|
|
|
1863
|
|
|
1864 If TABLE is a char-table, its elements describe the mapping between
|
|
|
1865 characters and their replacements. The char-table should be of type
|
|
|
1866 `char' or `generic'.
|
|
|
1867
|
|
|
1868 Returns the number of substitutions performed.
|
|
|
1869 */
|
|
|
1870 (start, end, table))
|
|
|
1871 {
|
|
|
1872 /* This function can GC */
|
|
665
|
1873 Charbpos pos, stop; /* Limits of the region. */
|
|
428
|
1874 int cnt = 0; /* Number of changes made. */
|
|
|
1875 int mc_count;
|
|
|
1876 struct buffer *buf = current_buffer;
|
|
|
1877 Emchar oc;
|
|
|
1878
|
|
|
1879 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
|
|
|
1880 mc_count = begin_multiple_change (buf, pos, stop);
|
|
|
1881 if (STRINGP (table))
|
|
|
1882 {
|
|
440
|
1883 Lisp_String *stable = XSTRING (table);
|
|
428
|
1884 Charcount size = string_char_length (stable);
|
|
|
1885 #ifdef MULE
|
|
|
1886 /* Under Mule, string_char(n) is O(n), so for large tables or
|
|
|
1887 large regions it makes sense to create an array of Emchars. */
|
|
|
1888 if (size * (stop - pos) > 65536)
|
|
|
1889 {
|
|
|
1890 Emchar *etable = alloca_array (Emchar, size);
|
|
665
|
1891 convert_intbyte_string_into_emchar_string
|
|
428
|
1892 (string_data (stable), string_length (stable), etable);
|
|
|
1893 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
|
|
|
1894 {
|
|
|
1895 if (oc < size)
|
|
|
1896 {
|
|
|
1897 Emchar nc = etable[oc];
|
|
|
1898 if (nc != oc)
|
|
|
1899 {
|
|
|
1900 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1901 ++cnt;
|
|
|
1902 }
|
|
|
1903 }
|
|
|
1904 }
|
|
|
1905 }
|
|
|
1906 else
|
|
|
1907 #endif /* MULE */
|
|
|
1908 {
|
|
|
1909 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
|
|
|
1910 {
|
|
|
1911 if (oc < size)
|
|
|
1912 {
|
|
|
1913 Emchar nc = string_char (stable, oc);
|
|
|
1914 if (nc != oc)
|
|
|
1915 {
|
|
|
1916 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1917 ++cnt;
|
|
|
1918 }
|
|
|
1919 }
|
|
|
1920 }
|
|
|
1921 }
|
|
|
1922 }
|
|
|
1923 else if (VECTORP (table))
|
|
|
1924 {
|
|
|
1925 Charcount size = XVECTOR_LENGTH (table);
|
|
|
1926 Lisp_Object *vtable = XVECTOR_DATA (table);
|
|
|
1927
|
|
|
1928 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
|
|
|
1929 {
|
|
|
1930 if (oc < size)
|
|
|
1931 {
|
|
|
1932 Lisp_Object replacement = vtable[oc];
|
|
|
1933 retry:
|
|
|
1934 if (CHAR_OR_CHAR_INTP (replacement))
|
|
|
1935 {
|
|
|
1936 Emchar nc = XCHAR_OR_CHAR_INT (replacement);
|
|
|
1937 if (nc != oc)
|
|
|
1938 {
|
|
|
1939 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1940 ++cnt;
|
|
|
1941 }
|
|
|
1942 }
|
|
|
1943 else if (STRINGP (replacement))
|
|
|
1944 {
|
|
|
1945 Charcount incr = XSTRING_CHAR_LENGTH (replacement) - 1;
|
|
|
1946 buffer_delete_range (buf, pos, pos + 1, 0);
|
|
|
1947 buffer_insert_lisp_string_1 (buf, pos, replacement, 0);
|
|
|
1948 pos += incr, stop += incr;
|
|
|
1949 ++cnt;
|
|
|
1950 }
|
|
|
1951 else if (!NILP (replacement))
|
|
|
1952 {
|
|
|
1953 replacement = wrong_type_argument (Qchar_or_string_p, replacement);
|
|
|
1954 goto retry;
|
|
|
1955 }
|
|
|
1956 }
|
|
|
1957 }
|
|
|
1958 }
|
|
|
1959 else if (CHAR_TABLEP (table)
|
|
|
1960 && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC
|
|
|
1961 || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR))
|
|
|
1962 {
|
|
440
|
1963 Lisp_Char_Table *ctable = XCHAR_TABLE (table);
|
|
428
|
1964
|
|
|
1965 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
|
|
|
1966 {
|
|
|
1967 Lisp_Object replacement = get_char_table (oc, ctable);
|
|
|
1968 retry2:
|
|
|
1969 if (CHAR_OR_CHAR_INTP (replacement))
|
|
|
1970 {
|
|
|
1971 Emchar nc = XCHAR_OR_CHAR_INT (replacement);
|
|
|
1972 if (nc != oc)
|
|
|
1973 {
|
|
|
1974 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1975 ++cnt;
|
|
|
1976 }
|
|
|
1977 }
|
|
|
1978 else if (STRINGP (replacement))
|
|
|
1979 {
|
|
|
1980 Charcount incr = XSTRING_CHAR_LENGTH (replacement) - 1;
|
|
|
1981 buffer_delete_range (buf, pos, pos + 1, 0);
|
|
|
1982 buffer_insert_lisp_string_1 (buf, pos, replacement, 0);
|
|
|
1983 pos += incr, stop += incr;
|
|
|
1984 ++cnt;
|
|
|
1985 }
|
|
|
1986 else if (!NILP (replacement))
|
|
|
1987 {
|
|
|
1988 replacement = wrong_type_argument (Qchar_or_string_p, replacement);
|
|
|
1989 goto retry2;
|
|
|
1990 }
|
|
|
1991 }
|
|
|
1992 }
|
|
|
1993 else
|
|
|
1994 dead_wrong_type_argument (Qstringp, table);
|
|
|
1995 end_multiple_change (buf, mc_count);
|
|
|
1996
|
|
|
1997 return make_int (cnt);
|
|
|
1998 }
|
|
|
1999
|
|
|
2000 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /*
|
|
|
2001 Delete the text between point and mark.
|
|
444
|
2002 When called from a program, expects two arguments START and END
|
|
|
2003 \(integers or markers) specifying the stretch to be deleted.
|
|
|
2004 If optional third arg BUFFER is nil, the current buffer is assumed.
|
|
428
|
2005 */
|
|
444
|
2006 (start, end, buffer))
|
|
428
|
2007 {
|
|
|
2008 /* This function can GC */
|
|
665
|
2009 Charbpos bp_start, bp_end;
|
|
428
|
2010 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
2011
|
|
444
|
2012 get_buffer_range_char (buf, start, end, &bp_start, &bp_end, 0);
|
|
|
2013 buffer_delete_range (buf, bp_start, bp_end, 0);
|
|
428
|
2014 return Qnil;
|
|
|
2015 }
|
|
|
2016
|
|
|
2017 void
|
|
|
2018 widen_buffer (struct buffer *b, int no_clip)
|
|
|
2019 {
|
|
|
2020 if (BUF_BEGV (b) != BUF_BEG (b))
|
|
|
2021 {
|
|
|
2022 clip_changed = 1;
|
|
|
2023 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BI_BUF_BEG (b));
|
|
|
2024 }
|
|
|
2025 if (BUF_ZV (b) != BUF_Z (b))
|
|
|
2026 {
|
|
|
2027 clip_changed = 1;
|
|
|
2028 SET_BOTH_BUF_ZV (b, BUF_Z (b), BI_BUF_Z (b));
|
|
|
2029 }
|
|
|
2030 if (clip_changed)
|
|
|
2031 {
|
|
|
2032 if (!no_clip)
|
|
|
2033 MARK_CLIP_CHANGED;
|
|
|
2034 /* Changing the buffer bounds invalidates any recorded current
|
|
|
2035 column. */
|
|
|
2036 invalidate_current_column ();
|
|
|
2037 narrow_line_number_cache (b);
|
|
|
2038 }
|
|
|
2039 }
|
|
|
2040
|
|
|
2041 DEFUN ("widen", Fwiden, 0, 1, "", /*
|
|
|
2042 Remove restrictions (narrowing) from BUFFER.
|
|
|
2043 This allows the buffer's full text to be seen and edited.
|
|
|
2044 If BUFFER is nil, the current buffer is assumed.
|
|
|
2045 */
|
|
|
2046 (buffer))
|
|
|
2047 {
|
|
|
2048 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
2049 widen_buffer (b, 0);
|
|
|
2050 return Qnil;
|
|
|
2051 }
|
|
|
2052
|
|
|
2053 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /*
|
|
|
2054 Restrict editing in BUFFER to the current region.
|
|
|
2055 The rest of the text becomes temporarily invisible and untouchable
|
|
|
2056 but is not deleted; if you save the buffer in a file, the invisible
|
|
|
2057 text is included in the file. \\[widen] makes all visible again.
|
|
|
2058 If BUFFER is nil, the current buffer is assumed.
|
|
|
2059 See also `save-restriction'.
|
|
|
2060
|
|
|
2061 When calling from a program, pass two arguments; positions (integers
|
|
|
2062 or markers) bounding the text that should remain visible.
|
|
|
2063 */
|
|
444
|
2064 (start, end, buffer))
|
|
428
|
2065 {
|
|
665
|
2066 Charbpos bp_start, bp_end;
|
|
428
|
2067 struct buffer *buf = decode_buffer (buffer, 1);
|
|
665
|
2068 Bytebpos bi_start, bi_end;
|
|
428
|
2069
|
|
444
|
2070 get_buffer_range_char (buf, start, end, &bp_start, &bp_end,
|
|
|
2071 GB_ALLOW_PAST_ACCESSIBLE);
|
|
665
|
2072 bi_start = charbpos_to_bytebpos (buf, bp_start);
|
|
|
2073 bi_end = charbpos_to_bytebpos (buf, bp_end);
|
|
428
|
2074
|
|
444
|
2075 SET_BOTH_BUF_BEGV (buf, bp_start, bi_start);
|
|
|
2076 SET_BOTH_BUF_ZV (buf, bp_end, bi_end);
|
|
|
2077 if (BUF_PT (buf) < bp_start)
|
|
|
2078 BUF_SET_PT (buf, bp_start);
|
|
|
2079 if (BUF_PT (buf) > bp_end)
|
|
|
2080 BUF_SET_PT (buf, bp_end);
|
|
428
|
2081 MARK_CLIP_CHANGED;
|
|
|
2082 /* Changing the buffer bounds invalidates any recorded current column. */
|
|
|
2083 invalidate_current_column ();
|
|
|
2084 narrow_line_number_cache (buf);
|
|
|
2085 return Qnil;
|
|
|
2086 }
|
|
|
2087
|
|
|
2088 Lisp_Object
|
|
|
2089 save_restriction_save (void)
|
|
|
2090 {
|
|
|
2091 Lisp_Object bottom, top;
|
|
|
2092 /* Note: I tried using markers here, but it does not win
|
|
|
2093 because insertion at the end of the saved region
|
|
|
2094 does not advance mh and is considered "outside" the saved region. */
|
|
|
2095 bottom = make_int (BUF_BEGV (current_buffer) - BUF_BEG (current_buffer));
|
|
|
2096 top = make_int (BUF_Z (current_buffer) - BUF_ZV (current_buffer));
|
|
|
2097
|
|
|
2098 return noseeum_cons (Fcurrent_buffer (), noseeum_cons (bottom, top));
|
|
|
2099 }
|
|
|
2100
|
|
|
2101 Lisp_Object
|
|
|
2102 save_restriction_restore (Lisp_Object data)
|
|
|
2103 {
|
|
|
2104 struct buffer *buf;
|
|
|
2105 Charcount newhead, newtail;
|
|
|
2106 Lisp_Object tem;
|
|
|
2107 int local_clip_changed = 0;
|
|
|
2108
|
|
|
2109 buf = XBUFFER (XCAR (data));
|
|
|
2110 if (!BUFFER_LIVE_P (buf))
|
|
|
2111 {
|
|
|
2112 /* someone could have killed the buffer in the meantime ... */
|
|
|
2113 free_cons (XCONS (XCDR (data)));
|
|
|
2114 free_cons (XCONS (data));
|
|
|
2115 return Qnil;
|
|
|
2116 }
|
|
|
2117 tem = XCDR (data);
|
|
|
2118 newhead = XINT (XCAR (tem));
|
|
|
2119 newtail = XINT (XCDR (tem));
|
|
|
2120
|
|
|
2121 free_cons (XCONS (XCDR (data)));
|
|
|
2122 free_cons (XCONS (data));
|
|
|
2123
|
|
|
2124 if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf))
|
|
|
2125 {
|
|
|
2126 newhead = 0;
|
|
|
2127 newtail = 0;
|
|
|
2128 }
|
|
|
2129
|
|
|
2130 {
|
|
665
|
2131 Charbpos start, end;
|
|
|
2132 Bytebpos bi_start, bi_end;
|
|
428
|
2133
|
|
|
2134 start = BUF_BEG (buf) + newhead;
|
|
|
2135 end = BUF_Z (buf) - newtail;
|
|
|
2136
|
|
665
|
2137 bi_start = charbpos_to_bytebpos (buf, start);
|
|
|
2138 bi_end = charbpos_to_bytebpos (buf, end);
|
|
428
|
2139
|
|
|
2140 if (BUF_BEGV (buf) != start)
|
|
|
2141 {
|
|
|
2142 local_clip_changed = 1;
|
|
|
2143 SET_BOTH_BUF_BEGV (buf, start, bi_start);
|
|
|
2144 narrow_line_number_cache (buf);
|
|
|
2145 }
|
|
|
2146 if (BUF_ZV (buf) != end)
|
|
|
2147 {
|
|
|
2148 local_clip_changed = 1;
|
|
|
2149 SET_BOTH_BUF_ZV (buf, end, bi_end);
|
|
|
2150 }
|
|
|
2151 }
|
|
|
2152 if (local_clip_changed)
|
|
|
2153 MARK_CLIP_CHANGED;
|
|
|
2154
|
|
|
2155 /* If point is outside the new visible range, move it inside. */
|
|
|
2156 BUF_SET_PT (buf,
|
|
665
|
2157 charbpos_clip_to_bounds (BUF_BEGV (buf),
|
|
428
|
2158 BUF_PT (buf),
|
|
|
2159 BUF_ZV (buf)));
|
|
|
2160
|
|
|
2161 return Qnil;
|
|
|
2162 }
|
|
|
2163
|
|
|
2164 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /*
|
|
|
2165 Execute BODY, saving and restoring current buffer's restrictions.
|
|
|
2166 The buffer's restrictions make parts of the beginning and end invisible.
|
|
|
2167 \(They are set up with `narrow-to-region' and eliminated with `widen'.)
|
|
|
2168 This special form, `save-restriction', saves the current buffer's restrictions
|
|
|
2169 when it is entered, and restores them when it is exited.
|
|
|
2170 So any `narrow-to-region' within BODY lasts only until the end of the form.
|
|
|
2171 The old restrictions settings are restored
|
|
|
2172 even in case of abnormal exit (throw or error).
|
|
|
2173
|
|
|
2174 The value returned is the value of the last form in BODY.
|
|
|
2175
|
|
|
2176 `save-restriction' can get confused if, within the BODY, you widen
|
|
|
2177 and then make changes outside the area within the saved restrictions.
|
|
|
2178
|
|
|
2179 Note: if you are using both `save-excursion' and `save-restriction',
|
|
|
2180 use `save-excursion' outermost:
|
|
|
2181 (save-excursion (save-restriction ...))
|
|
|
2182 */
|
|
|
2183 (body))
|
|
|
2184 {
|
|
|
2185 /* This function can GC */
|
|
|
2186 int speccount = specpdl_depth ();
|
|
|
2187
|
|
|
2188 record_unwind_protect (save_restriction_restore, save_restriction_save ());
|
|
|
2189
|
|
|
2190 return unbind_to (speccount, Fprogn (body));
|
|
|
2191 }
|
|
|
2192
|
|
|
2193
|
|
|
2194 DEFUN ("format", Fformat, 1, MANY, 0, /*
|
|
|
2195 Format a string out of a control-string and arguments.
|
|
|
2196 The first argument is a control string.
|
|
|
2197 The other arguments are substituted into it to make the result, a string.
|
|
|
2198 It may contain %-sequences meaning to substitute the next argument.
|
|
|
2199 %s means print all objects as-is, using `princ'.
|
|
|
2200 %S means print all objects as s-expressions, using `prin1'.
|
|
|
2201 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex,
|
|
|
2202 %X uppercase hex).
|
|
|
2203 %c means print as a single character.
|
|
|
2204 %f means print as a floating-point number in fixed notation (e.g. 785.200).
|
|
|
2205 %e or %E means print as a floating-point number in scientific notation
|
|
|
2206 (e.g. 7.85200e+03).
|
|
|
2207 %g or %G means print as a floating-point number in "pretty format";
|
|
|
2208 depending on the number, either %f or %e/%E format will be used, and
|
|
|
2209 trailing zeroes are removed from the fractional part.
|
|
|
2210 The argument used for all but %s and %S must be a number. It will be
|
|
|
2211 converted to an integer or a floating-point number as necessary.
|
|
|
2212
|
|
|
2213 %$ means reposition to read a specific numbered argument; for example,
|
|
|
2214 %3$s would apply the `%s' to the third argument after the control string,
|
|
|
2215 and the next format directive would use the fourth argument, the
|
|
|
2216 following one the fifth argument, etc. (There must be a positive integer
|
|
|
2217 between the % and the $).
|
|
|
2218 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be
|
|
|
2219 specified between the optional repositioning spec and the conversion
|
|
|
2220 character; see below.
|
|
|
2221 An optional minimum field width may be specified after any flag characters
|
|
|
2222 and before the conversion character; it specifies the minimum number of
|
|
|
2223 characters that the converted argument will take up. Padding will be
|
|
|
2224 added on the left (or on the right, if the `-' flag is specified), as
|
|
|
2225 necessary. Padding is done with spaces, or with zeroes if the `0' flag
|
|
|
2226 is specified.
|
|
|
2227 If the field width is specified as `*', the field width is assumed to have
|
|
|
2228 been specified as an argument. Any repositioning specification that
|
|
|
2229 would normally specify the argument to be converted will now specify
|
|
|
2230 where to find this field width argument, not where to find the argument
|
|
|
2231 to be converted. If there is no repositioning specification, the normal
|
|
|
2232 next argument is used. The argument to be converted will be the next
|
|
|
2233 argument after the field width argument unless the precision is also
|
|
|
2234 specified as `*' (see below).
|
|
|
2235
|
|
|
2236 An optional period character and precision may be specified after any
|
|
|
2237 minimum field width. It specifies the minimum number of digits to
|
|
|
2238 appear in %d, %i, %o, %x, and %X conversions (the number is padded
|
|
|
2239 on the left with zeroes as necessary); the number of digits printed
|
|
|
2240 after the decimal point for %f, %e, and %E conversions; the number
|
|
|
2241 of significant digits printed in %g and %G conversions; and the
|
|
|
2242 maximum number of non-padding characters printed in %s and %S
|
|
|
2243 conversions. The default precision for floating-point conversions
|
|
|
2244 is six.
|
|
|
2245 If the precision is specified as `*', the precision is assumed to have been
|
|
|
2246 specified as an argument. The argument used will be the next argument
|
|
|
2247 after the field width argument, if any. If the field width was not
|
|
|
2248 specified as an argument, any repositioning specification that would
|
|
|
2249 normally specify the argument to be converted will now specify where to
|
|
|
2250 find the precision argument. If there is no repositioning specification,
|
|
|
2251 the normal next argument is used.
|
|
|
2252
|
|
|
2253 The ` ' and `+' flags mean prefix non-negative numbers with a space or
|
|
|
2254 plus sign, respectively.
|
|
|
2255 The `#' flag means print numbers in an alternate, more verbose format:
|
|
|
2256 octal numbers begin with zero; hex numbers begin with a 0x or 0X;
|
|
|
2257 a decimal point is printed in %f, %e, and %E conversions even if no
|
|
|
2258 numbers are printed after it; and trailing zeroes are not omitted in
|
|
|
2259 %g and %G conversions.
|
|
|
2260
|
|
|
2261 Use %% to put a single % into the output.
|
|
|
2262 */
|
|
|
2263 (int nargs, Lisp_Object *args))
|
|
|
2264 {
|
|
|
2265 /* It should not be necessary to GCPRO ARGS, because
|
|
|
2266 the caller in the interpreter should take care of that. */
|
|
|
2267
|
|
|
2268 CHECK_STRING (args[0]);
|
|
|
2269 return emacs_doprnt_string_lisp (0, args[0], 0, nargs - 1, args + 1);
|
|
|
2270 }
|
|
|
2271
|
|
|
2272
|
|
|
2273 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /*
|
|
|
2274 Return t if two characters match, optionally ignoring case.
|
|
|
2275 Both arguments must be characters (i.e. NOT integers).
|
|
|
2276 Case is ignored if `case-fold-search' is non-nil in BUFFER.
|
|
|
2277 If BUFFER is nil, the current buffer is assumed.
|
|
|
2278 */
|
|
444
|
2279 (character1, character2, buffer))
|
|
428
|
2280 {
|
|
|
2281 Emchar x1, x2;
|
|
|
2282 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
2283
|
|
444
|
2284 CHECK_CHAR_COERCE_INT (character1);
|
|
|
2285 CHECK_CHAR_COERCE_INT (character2);
|
|
|
2286 x1 = XCHAR (character1);
|
|
|
2287 x2 = XCHAR (character2);
|
|
428
|
2288
|
|
|
2289 return (!NILP (b->case_fold_search)
|
|
|
2290 ? DOWNCASE (b, x1) == DOWNCASE (b, x2)
|
|
|
2291 : x1 == x2)
|
|
|
2292 ? Qt : Qnil;
|
|
|
2293 }
|
|
|
2294
|
|
434
|
2295 DEFUN ("char=", Fchar_Equal, 2, 2, 0, /*
|
|
428
|
2296 Return t if two characters match, case is significant.
|
|
|
2297 Both arguments must be characters (i.e. NOT integers).
|
|
|
2298 */
|
|
444
|
2299 (character1, character2))
|
|
428
|
2300 {
|
|
444
|
2301 CHECK_CHAR_COERCE_INT (character1);
|
|
|
2302 CHECK_CHAR_COERCE_INT (character2);
|
|
428
|
2303
|
|
444
|
2304 return EQ (character1, character2) ? Qt : Qnil;
|
|
428
|
2305 }
|
|
|
2306
|
|
|
2307 #if 0 /* Undebugged FSFmacs code */
|
|
|
2308 /* Transpose the markers in two regions of the current buffer, and
|
|
|
2309 adjust the ones between them if necessary (i.e.: if the regions
|
|
|
2310 differ in size).
|
|
|
2311
|
|
|
2312 Traverses the entire marker list of the buffer to do so, adding an
|
|
|
2313 appropriate amount to some, subtracting from some, and leaving the
|
|
|
2314 rest untouched. Most of this is copied from adjust_markers in insdel.c.
|
|
|
2315
|
|
|
2316 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
|
|
|
2317
|
|
|
2318 void
|
|
665
|
2319 transpose_markers (Charbpos start1, Charbpos end1, Charbpos start2, Charbpos end2)
|
|
428
|
2320 {
|
|
|
2321 Charcount amt1, amt2, diff;
|
|
|
2322 Lisp_Object marker;
|
|
|
2323 struct buffer *buf = current_buffer;
|
|
|
2324
|
|
|
2325 /* Update point as if it were a marker. */
|
|
|
2326 if (BUF_PT (buf) < start1)
|
|
|
2327 ;
|
|
|
2328 else if (BUF_PT (buf) < end1)
|
|
|
2329 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1));
|
|
|
2330 else if (BUF_PT (buf) < start2)
|
|
|
2331 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1));
|
|
|
2332 else if (BUF_PT (buf) < end2)
|
|
|
2333 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1));
|
|
|
2334
|
|
|
2335 /* We used to adjust the endpoints here to account for the gap, but that
|
|
|
2336 isn't good enough. Even if we assume the caller has tried to move the
|
|
|
2337 gap out of our way, it might still be at start1 exactly, for example;
|
|
|
2338 and that places it `inside' the interval, for our purposes. The amount
|
|
|
2339 of adjustment is nontrivial if there's a `denormalized' marker whose
|
|
|
2340 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
|
|
|
2341 the dirty work to Fmarker_position, below. */
|
|
|
2342
|
|
|
2343 /* The difference between the region's lengths */
|
|
|
2344 diff = (end2 - start2) - (end1 - start1);
|
|
|
2345
|
|
|
2346 /* For shifting each marker in a region by the length of the other
|
|
|
2347 * region plus the distance between the regions.
|
|
|
2348 */
|
|
|
2349 amt1 = (end2 - start2) + (start2 - end1);
|
|
|
2350 amt2 = (end1 - start1) + (start2 - end1);
|
|
|
2351
|
|
|
2352 for (marker = BUF_MARKERS (buf); !NILP (marker);
|
|
|
2353 marker = XMARKER (marker)->chain)
|
|
|
2354 {
|
|
665
|
2355 Charbpos mpos = marker_position (marker);
|
|
428
|
2356 if (mpos >= start1 && mpos < end2)
|
|
|
2357 {
|
|
|
2358 if (mpos < end1)
|
|
|
2359 mpos += amt1;
|
|
|
2360 else if (mpos < start2)
|
|
|
2361 mpos += diff;
|
|
|
2362 else
|
|
|
2363 mpos -= amt2;
|
|
|
2364 set_marker_position (marker, mpos);
|
|
|
2365 }
|
|
|
2366 }
|
|
|
2367 }
|
|
|
2368
|
|
|
2369 #endif /* 0 */
|
|
|
2370
|
|
|
2371 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /*
|
|
|
2372 Transpose region START1 to END1 with START2 to END2.
|
|
|
2373 The regions may not be overlapping, because the size of the buffer is
|
|
|
2374 never changed in a transposition.
|
|
|
2375
|
|
444
|
2376 Optional fifth arg LEAVE-MARKERS, if non-nil, means don't transpose
|
|
428
|
2377 any markers that happen to be located in the regions. (#### BUG: currently
|
|
444
|
2378 this function always acts as if LEAVE-MARKERS is non-nil.)
|
|
428
|
2379
|
|
|
2380 Transposing beyond buffer boundaries is an error.
|
|
|
2381 */
|
|
444
|
2382 (start1, end1, start2, end2, leave_markers))
|
|
428
|
2383 {
|
|
665
|
2384 Charbpos startr1, endr1, startr2, endr2;
|
|
428
|
2385 Charcount len1, len2;
|
|
|
2386 Lisp_Object string1, string2;
|
|
|
2387 struct buffer *buf = current_buffer;
|
|
|
2388
|
|
444
|
2389 get_buffer_range_char (buf, start1, end1, &startr1, &endr1, 0);
|
|
|
2390 get_buffer_range_char (buf, start2, end2, &startr2, &endr2, 0);
|
|
428
|
2391
|
|
444
|
2392 len1 = endr1 - startr1;
|
|
|
2393 len2 = endr2 - startr2;
|
|
428
|
2394
|
|
444
|
2395 if (startr2 < endr1)
|
|
563
|
2396 invalid_argument ("transposed regions not properly ordered", Qunbound);
|
|
444
|
2397 else if (startr1 == endr1 || startr2 == endr2)
|
|
563
|
2398 invalid_argument ("transposed region may not be of length 0", Qunbound);
|
|
428
|
2399
|
|
444
|
2400 string1 = make_string_from_buffer (buf, startr1, len1);
|
|
|
2401 string2 = make_string_from_buffer (buf, startr2, len2);
|
|
|
2402 buffer_delete_range (buf, startr2, endr2, 0);
|
|
|
2403 buffer_insert_lisp_string_1 (buf, startr2, string1, 0);
|
|
|
2404 buffer_delete_range (buf, startr1, endr1, 0);
|
|
|
2405 buffer_insert_lisp_string_1 (buf, startr1, string2, 0);
|
|
428
|
2406
|
|
|
2407 /* In FSFmacs there is a whole bunch of really ugly code here
|
|
|
2408 to attempt to transpose the regions without using up any
|
|
|
2409 extra memory. Although the intent may be good, the result
|
|
|
2410 was highly bogus. */
|
|
|
2411
|
|
|
2412 return Qnil;
|
|
|
2413 }
|
|
|
2414
|
|
|
2415
|
|
|
2416 /************************************************************************/
|
|
|
2417 /* initialization */
|
|
|
2418 /************************************************************************/
|
|
|
2419
|
|
|
2420 void
|
|
|
2421 syms_of_editfns (void)
|
|
|
2422 {
|
|
563
|
2423 DEFSYMBOL (Qpoint);
|
|
|
2424 DEFSYMBOL (Qmark);
|
|
|
2425 DEFSYMBOL (Qregion_beginning);
|
|
|
2426 DEFSYMBOL (Qregion_end);
|
|
|
2427 DEFSYMBOL (Qformat);
|
|
|
2428 DEFSYMBOL (Quser_files_and_directories);
|
|
428
|
2429
|
|
|
2430 DEFSUBR (Fchar_equal);
|
|
|
2431 DEFSUBR (Fchar_Equal);
|
|
|
2432 DEFSUBR (Fgoto_char);
|
|
|
2433 DEFSUBR (Fstring_to_char);
|
|
|
2434 DEFSUBR (Fchar_to_string);
|
|
|
2435 DEFSUBR (Fbuffer_substring);
|
|
|
2436 DEFSUBR (Fbuffer_substring_no_properties);
|
|
|
2437
|
|
|
2438 DEFSUBR (Fpoint_marker);
|
|
|
2439 DEFSUBR (Fmark_marker);
|
|
|
2440 DEFSUBR (Fpoint);
|
|
|
2441 DEFSUBR (Fregion_beginning);
|
|
|
2442 DEFSUBR (Fregion_end);
|
|
|
2443 DEFSUBR (Fsave_excursion);
|
|
|
2444 DEFSUBR (Fsave_current_buffer);
|
|
|
2445
|
|
|
2446 DEFSUBR (Fbuffer_size);
|
|
|
2447 DEFSUBR (Fpoint_max);
|
|
|
2448 DEFSUBR (Fpoint_min);
|
|
|
2449 DEFSUBR (Fpoint_min_marker);
|
|
|
2450 DEFSUBR (Fpoint_max_marker);
|
|
|
2451
|
|
|
2452 DEFSUBR (Fbobp);
|
|
|
2453 DEFSUBR (Feobp);
|
|
|
2454 DEFSUBR (Fbolp);
|
|
|
2455 DEFSUBR (Feolp);
|
|
|
2456 DEFSUBR (Ffollowing_char);
|
|
|
2457 DEFSUBR (Fpreceding_char);
|
|
|
2458 DEFSUBR (Fchar_after);
|
|
|
2459 DEFSUBR (Fchar_before);
|
|
|
2460 DEFSUBR (Finsert);
|
|
|
2461 DEFSUBR (Finsert_string);
|
|
|
2462 DEFSUBR (Finsert_before_markers);
|
|
|
2463 DEFSUBR (Finsert_char);
|
|
|
2464
|
|
|
2465 DEFSUBR (Ftemp_directory);
|
|
|
2466 DEFSUBR (Fuser_login_name);
|
|
|
2467 DEFSUBR (Fuser_real_login_name);
|
|
|
2468 DEFSUBR (Fuser_uid);
|
|
|
2469 DEFSUBR (Fuser_real_uid);
|
|
|
2470 DEFSUBR (Fuser_full_name);
|
|
|
2471 DEFSUBR (Fuser_home_directory);
|
|
|
2472 DEFSUBR (Femacs_pid);
|
|
|
2473 DEFSUBR (Fcurrent_time);
|
|
|
2474 DEFSUBR (Fcurrent_process_time);
|
|
|
2475 DEFSUBR (Fformat_time_string);
|
|
|
2476 DEFSUBR (Fdecode_time);
|
|
|
2477 DEFSUBR (Fencode_time);
|
|
|
2478 DEFSUBR (Fcurrent_time_string);
|
|
|
2479 DEFSUBR (Fcurrent_time_zone);
|
|
|
2480 DEFSUBR (Fset_time_zone_rule);
|
|
|
2481 DEFSUBR (Fsystem_name);
|
|
|
2482 DEFSUBR (Fformat);
|
|
|
2483
|
|
|
2484 DEFSUBR (Finsert_buffer_substring);
|
|
|
2485 DEFSUBR (Fcompare_buffer_substrings);
|
|
|
2486 DEFSUBR (Fsubst_char_in_region);
|
|
|
2487 DEFSUBR (Ftranslate_region);
|
|
|
2488 DEFSUBR (Fdelete_region);
|
|
|
2489 DEFSUBR (Fwiden);
|
|
|
2490 DEFSUBR (Fnarrow_to_region);
|
|
|
2491 DEFSUBR (Fsave_restriction);
|
|
|
2492 DEFSUBR (Ftranspose_regions);
|
|
|
2493
|
|
563
|
2494 DEFSYMBOL (Qzmacs_update_region);
|
|
|
2495 DEFSYMBOL (Qzmacs_deactivate_region);
|
|
|
2496 DEFSYMBOL (Qzmacs_region_buffer);
|
|
428
|
2497 }
|
|
|
2498
|
|
|
2499 void
|
|
|
2500 vars_of_editfns (void)
|
|
|
2501 {
|
|
|
2502 staticpro (&Vsystem_name);
|
|
|
2503 #if 0
|
|
|
2504 staticpro (&Vuser_name);
|
|
|
2505 staticpro (&Vuser_real_name);
|
|
|
2506 #endif
|
|
|
2507 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /*
|
|
|
2508 *Whether LISPM-style active regions should be used.
|
|
|
2509 This means that commands which operate on the region (the area between the
|
|
|
2510 point and the mark) will only work while the region is in the ``active''
|
|
|
2511 state, which is indicated by highlighting. Executing most commands causes
|
|
|
2512 the region to not be in the active state, so (for example) \\[kill-region] will only
|
|
|
2513 work immediately after activating the region.
|
|
|
2514
|
|
|
2515 More specifically:
|
|
|
2516
|
|
|
2517 - Commands which operate on the region only work if the region is active.
|
|
|
2518 - Only a very small set of commands cause the region to become active:
|
|
444
|
2519 Those commands whose semantics are to mark an area, like `mark-defun'.
|
|
428
|
2520 - The region is deactivated after each command that is executed, except that:
|
|
|
2521 - "Motion" commands do not change whether the region is active or not.
|
|
|
2522
|
|
|
2523 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the
|
|
|
2524 cursor with normal motion commands (C-n, C-p, etc) will cause the region
|
|
|
2525 between point and the recently-pushed mark to be highlighted. It will
|
|
|
2526 remain highlighted until some non-motion command is executed.
|
|
|
2527
|
|
|
2528 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a
|
|
|
2529 region and execute a command that operates on it, you can reactivate the
|
|
|
2530 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it
|
|
|
2531 again.
|
|
|
2532
|
|
|
2533 Generally, commands which push marks as a means of navigation (like
|
|
|
2534 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the
|
|
|
2535 region. But commands which push marks as a means of marking an area of
|
|
|
2536 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer]))
|
|
|
2537 do activate the region.
|
|
|
2538
|
|
|
2539 The way the command loop actually works with regard to deactivating the
|
|
|
2540 region is as follows:
|
|
|
2541
|
|
|
2542 - If the variable `zmacs-region-stays' has been set to t during the command
|
|
|
2543 just executed, the region is left alone (this is how the motion commands
|
|
|
2544 make the region stay around; see the `_' flag in the `interactive'
|
|
|
2545 specification). `zmacs-region-stays' is reset to nil before each command
|
|
|
2546 is executed.
|
|
|
2547 - If the function `zmacs-activate-region' has been called during the command
|
|
|
2548 just executed, the region is left alone. Very few functions should
|
|
|
2549 actually call this function.
|
|
|
2550 - Otherwise, if the region is active, the region is deactivated and
|
|
|
2551 the `zmacs-deactivate-region-hook' is called.
|
|
|
2552 */ );
|
|
|
2553 /* Zmacs style active regions are now ON by default */
|
|
|
2554 zmacs_regions = 1;
|
|
|
2555
|
|
|
2556 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /*
|
|
|
2557 Do not alter this. It is for internal use only.
|
|
|
2558 */ );
|
|
|
2559 zmacs_region_active_p = 0;
|
|
|
2560
|
|
|
2561 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /*
|
|
|
2562 Whether the current command will deactivate the region.
|
|
|
2563 Commands which do not wish to affect whether the region is currently
|
|
|
2564 highlighted should set this to t. Normally, the region is turned off after
|
|
|
2565 executing each command that did not explicitly turn it on with the function
|
|
|
2566 zmacs-activate-region. Setting this to true lets a command be non-intrusive.
|
|
|
2567 See the variable `zmacs-regions'.
|
|
|
2568
|
|
|
2569 The same effect can be achieved using the `_' interactive specification.
|
|
442
|
2570
|
|
|
2571 `zmacs-region-stays' is reset to nil before each command is executed.
|
|
428
|
2572 */ );
|
|
|
2573 zmacs_region_stays = 0;
|
|
|
2574
|
|
|
2575 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /*
|
|
|
2576 Do not use this -- it will be going away soon.
|
|
|
2577 Indicates if `goto-char' has just been run. This information is allegedly
|
|
|
2578 needed to get the desired behavior for atomic extents and unfortunately
|
|
|
2579 is not available by any other means.
|
|
|
2580 */ );
|
|
|
2581 atomic_extent_goto_char_p = 0;
|
|
|
2582 #ifdef AMPERSAND_FULL_NAME
|
|
|
2583 Fprovide(intern("ampersand-full-name"));
|
|
|
2584 #endif
|
|
|
2585
|
|
|
2586 DEFVAR_LISP ("user-full-name", &Vuser_full_name /*
|
|
|
2587 *The name of the user.
|
|
|
2588 The function `user-full-name', which will return the value of this
|
|
|
2589 variable, when called without arguments.
|
|
|
2590 This is initialized to the value of the NAME environment variable.
|
|
|
2591 */ );
|
|
|
2592 /* Initialized at run-time. */
|
|
|
2593 Vuser_full_name = Qnil;
|
|
|
2594 }
|
