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