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0
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1 /* Lisp functions pertaining to editing.
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2 Copyright (C) 1985-1987, 1989, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
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4 Copyright (C) 1996 Ben Wing.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Mule 2.0, FSF 19.30. */
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24
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25 /* This file has been Mule-ized. */
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26
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27 /* Hacked on for Mule by Ben Wing, December 1994. */
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28
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29 #include <config.h>
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30 #include "lisp.h"
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31
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32 #include "buffer.h"
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33 #include "commands.h"
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34 #include "events.h" /* for EVENTP */
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35 #include "extents.h"
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36 #include "frame.h"
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37 #include "insdel.h"
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38 #include "window.h"
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39
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40 #include "systime.h"
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41 #include "sysdep.h"
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42 #include "syspwd.h"
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43
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44 /* Some static data, and a function to initialize it for each run */
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45
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46 Lisp_Object Vsystem_name; /* #### - I don't see why this should be */
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47 /* static, either... --Stig */
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48 #if 0 /* XEmacs - this is now dynamic */
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49 /* if at some point it's deemed desirable to
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50 use lisp variables here, then they can be
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51 initialized to nil and then set to their
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52 real values upon the first call to the
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53 functions that generate them. --stig */
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54 Lisp_Object Vuser_real_login_name; /* login name of current user ID */
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55 Lisp_Object Vuser_full_name; /* full name of current user */
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56 Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER. */
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57 #endif
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58
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59 extern char *get_system_name (void);
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60
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61 Lisp_Object Qformat;
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62
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63 Lisp_Object Qpoint, Qmark, Qregion_beginning, Qregion_end;
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64
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65 /* This holds the value of `environ' produced by the previous
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66 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
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67 has never been called. */
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68 static char **environbuf;
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69
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70 void
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71 init_editfns (void)
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72 {
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73 /* Only used in removed code below. */
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74 #if 0
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75 char *user_name;
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76 Bufbyte *p, *q;
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77 struct passwd *pw; /* password entry for the current user */
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78 Lisp_Object tem;
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79 #endif
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80
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81 environbuf = 0;
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82
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83 /* Set up system_name even when dumping. */
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84 init_system_name ();
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85
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86 #if 0 /* this is now dynamic */
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87 /* don't lose utterly if someone uses these during loadup. */
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88 Vuser_real_login_name = Qnil;
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89 Vuser_login_name = Qnil;
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90 Vuser_full_name = Qnil;
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91
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92 #ifndef CANNOT_DUMP
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93 /* Don't bother with this on initial start when just dumping out */
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94 if (!initialized)
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95 return;
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96 #endif /* not CANNOT_DUMP */
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97
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98 pw = (struct passwd *) getpwuid (getuid ());
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99 #ifdef MSDOS
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100 /* We let the real user name default to "root" because that's quite
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101 accurate on MSDOG and because it lets Emacs find the init file.
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102 (The DVX libraries override the Djgpp libraries here.) */
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103 Vuser_real_login_name = build_string (pw ? pw->pw_name : "root");
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104 #else
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105 Vuser_real_login_name = build_string (pw ? pw->pw_name : "unknown");
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106 #endif
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107
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108 /* Get the effective user name, by consulting environment variables,
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109 or the effective uid if those are unset. */
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110 user_name = getenv ("LOGNAME");
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111 if (!user_name)
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112 #ifdef WINDOWSNT
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113 user_name = (char *) getenv ("USERNAME"); /* it's USERNAME on NT */
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114 #else /* WINDOWSNT */
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115 user_name = (char *) getenv ("USER");
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116 #endif /* WINDOWSNT */
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117 if (!user_name)
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118 {
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119 /* #### - do we really want the EFFECTIVE uid here? Are these flipped? */
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120 /* I ask because LOGNAME and USER vars WILL NOT MATCH the euid. --Stig */
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121 pw = (struct passwd *) getpwuid (geteuid ());
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122 user_name = (char *) (pw ? pw->pw_name : "unknown");
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123 }
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124 Vuser_login_name = build_string (user_name);
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125
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126 /* If the user name claimed in the environment vars differs from
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127 the real uid, use the claimed name to find the full name. */
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128 tem = Fstring_equal (Vuser_login_name, Vuser_real_login_name);
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129 if (NILP (tem))
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130 {
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131 /* Jamie reports that IRIX gets wedged by SIGIO/SIGALARM occurring
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132 in select(), called from getpwnam(). */
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133 slow_down_interrupts ();
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134 pw = (struct passwd *)
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14
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135 getpwnam ((char *) XSTRING_DATA (Vuser_login_name));
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0
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136 speed_up_interrupts ();
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137 }
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138
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139 p = (Bufbyte *) ((pw) ? USER_FULL_NAME : "unknown"); /* don't gettext here */
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140 q = (Bufbyte *) strchr ((char *) p, ',');
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141 Vuser_full_name = make_ext_string (p, (q ? q - p : strlen ((char *) p)),
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142 FORMAT_OS);
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143
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144 #ifdef AMPERSAND_FULL_NAME
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14
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145 p = XSTRING_DATA (Vuser_full_name);
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0
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146 q = (Bufbyte *) strchr ((char *) p, '&');
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147 /* Substitute the login name for the &, upcasing the first character. */
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148 if (q)
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149 {
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150 char *r = (char *)
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14
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151 alloca (strlen ((char *) p) + XSTRING_LENGTH (Vuser_login_name) + 1);
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0
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152 Charcount fullname_off = bytecount_to_charcount (p, q - p);
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153 memcpy (r, p, q - p);
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154 r[q - p] = 0;
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14
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155 strcat (r, (char *) XSTRING_DATA (Vuser_login_name));
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0
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156 strcat (r, q + 1);
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157 Vuser_full_name = build_string (r);
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158 set_string_char (XSTRING (Vuser_full_name), fullname_off,
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159 UPCASE (current_buffer,
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160 string_char (XSTRING (Vuser_full_name),
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161 fullname_off)));
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162 }
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163 #endif /* AMPERSAND_FULL_NAME */
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164
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165 p = (Bufbyte *) getenv ("NAME");
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166 if (p)
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167 Vuser_full_name = build_string ((char *) p);
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168 #endif /* 0 */
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169 }
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170
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20
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171 DEFUN ("char-to-string", Fchar_to_string, 1, 1, 0, /*
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0
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172 Convert arg CH to a one-character string containing that character.
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20
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173 */
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174 (ch))
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0
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175 {
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176 Bytecount len;
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177 Bufbyte str[MAX_EMCHAR_LEN];
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178
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179 if (EVENTP (ch))
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180 {
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181 Lisp_Object ch2 = Fevent_to_character (ch, Qt, Qnil, Qnil);
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182 if (NILP (ch2))
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183 return
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184 signal_simple_continuable_error
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185 ("character has no ASCII equivalent:", Fcopy_event (ch, Qnil));
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186 ch = ch2;
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187 }
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188
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189 CHECK_CHAR_COERCE_INT (ch);
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190
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191 len = set_charptr_emchar (str, XCHAR (ch));
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192 return make_string (str, len);
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193 }
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194
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20
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195 DEFUN ("string-to-char", Fstring_to_char, 1, 1, 0, /*
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0
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196 Convert arg STRING to a character, the first character of that string.
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177
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197 An empty string will return the constant `nil'.
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20
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198 */
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199 (str))
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0
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200 {
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201 struct Lisp_String *p;
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202 CHECK_STRING (str);
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203
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204 p = XSTRING (str);
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205 if (string_length (p) != 0)
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149
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206 return make_char (string_char (p, 0));
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177
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207 else
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208 /* This used to return Qzero. That is broken, broken, broken. */
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209 /* It might be kinder to signal an error directly. -slb */
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210 return Qnil;
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0
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211 }
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212
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213
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214 static Lisp_Object
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215 buildmark (Bufpos val, Lisp_Object buffer)
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216 {
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217 Lisp_Object mark;
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218 mark = Fmake_marker ();
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219 Fset_marker (mark, make_int (val), buffer);
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220 return mark;
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221 }
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222
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20
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223 DEFUN ("point", Fpoint, 0, 1, 0, /*
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0
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224 Return value of point, as an integer.
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225 Beginning of buffer is position (point-min).
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226 If BUFFER is nil, the current buffer is assumed.
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20
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227 */
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228 (buffer))
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0
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229 {
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153
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230 struct buffer *b = decode_buffer (buffer, 1);
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231 return make_int (BUF_PT (b));
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0
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232 }
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233
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20
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234 DEFUN ("point-marker", Fpoint_marker, 0, 2, 0, /*
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0
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235 Return value of point, as a marker object.
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236 This marker is a copy; you may modify it with reckless abandon.
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237 If optional argument DONT-COPY-P is non-nil, then it returns the real
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238 point-marker; modifying the position of this marker will move point.
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239 It is illegal to change the buffer of it, or make it point nowhere.
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240 If BUFFER is nil, the current buffer is assumed.
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20
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241 */
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242 (dont_copy_p, buffer))
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0
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243 {
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244 struct buffer *b = decode_buffer (buffer, 1);
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245 if (NILP (dont_copy_p))
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246 return Fcopy_marker (b->point_marker, Qnil);
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247 return b->point_marker;
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248 }
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249
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250 /* The following two functions end up being identical but it's
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251 cleaner to declare them separately. */
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252
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253 Bufpos
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254 bufpos_clip_to_bounds (Bufpos lower, Bufpos num, Bufpos upper)
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255 {
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256 if (num < lower)
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257 return lower;
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258 else if (num > upper)
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259 return upper;
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260 else
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261 return num;
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262 }
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263
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264 Bytind
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265 bytind_clip_to_bounds (Bytind lower, Bytind num, Bytind upper)
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266 {
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267 if (num < lower)
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268 return lower;
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269 else if (num > upper)
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270 return upper;
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271 else
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272 return num;
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273 }
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274
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275 /*
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276 * Chuck says:
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277 * There is no absolute way to determine if goto-char is the function
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278 * being run. this-command doesn't work because it is often eval'd
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279 * and this-command ends up set to eval-expression. So this flag gets
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280 * added for now.
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281 *
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282 * Jamie thinks he's wrong, but we'll leave this in for now.
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283 */
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284 int atomic_extent_goto_char_p;
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285
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20
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286 DEFUN ("goto-char", Fgoto_char, 1, 2, "NGoto char: ", /*
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0
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287 Set point to POSITION, a number or marker.
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288 Beginning of buffer is position (point-min), end is (point-max).
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289 If BUFFER is nil, the current buffer is assumed.
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290 Return value of POSITION, as an integer.
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20
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291 */
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292 (position, buffer))
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0
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293 {
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294 struct buffer *b = decode_buffer (buffer, 1);
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295 Bufpos n = get_buffer_pos_char (b, position, GB_COERCE_RANGE);
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296 BUF_SET_PT (b, n);
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297 atomic_extent_goto_char_p = 1;
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149
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298 return make_int (n);
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0
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299 }
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300
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301 static Lisp_Object
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302 region_limit (int beginningp, struct buffer *b)
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303 {
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304 Lisp_Object m;
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305
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306 #if 0 /* FSFmacs */
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307 if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive)
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308 && NILP (b->mark_active))
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309 Fsignal (Qmark_inactive, Qnil);
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310 #endif
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311 m = Fmarker_position (b->mark);
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312 if (NILP (m)) error ("There is no region now");
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313 if (!!(BUF_PT (b) < XINT (m)) == !!beginningp)
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149
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314 return make_int (BUF_PT (b));
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0
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315 else
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149
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316 return m;
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0
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317 }
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318
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20
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319 DEFUN ("region-beginning", Fregion_beginning, 0, 1, 0, /*
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153
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320 Return position of beginning of region in BUFFER, as an integer.
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0
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321 If BUFFER is nil, the current buffer is assumed.
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20
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322 */
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323 (buffer))
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0
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324 {
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153
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325 return region_limit (1, decode_buffer (buffer, 1));
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0
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326 }
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327
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20
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328 DEFUN ("region-end", Fregion_end, 0, 1, 0, /*
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153
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329 Return position of end of region in BUFFER, as an integer.
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0
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330 If BUFFER is nil, the current buffer is assumed.
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20
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331 */
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332 (buffer))
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0
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333 {
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149
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334 return region_limit (0, decode_buffer (buffer, 1));
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0
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335 }
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336
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337 /* Whether to use lispm-style active-regions */
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338 int zmacs_regions;
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339
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340 /* Whether the zmacs region is active. This is not per-buffer because
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341 there can be only one active region at a time. #### Now that the
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342 zmacs region are not directly tied to the X selections this may not
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343 necessarily have to be true. */
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344 int zmacs_region_active_p;
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345
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346 int zmacs_region_stays;
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347
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348 Lisp_Object Qzmacs_update_region, Qzmacs_deactivate_region;
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349 Lisp_Object Qzmacs_region_buffer;
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350
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351 void
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352 zmacs_update_region (void)
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353 {
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354 /* This function can GC */
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355 if (zmacs_region_active_p)
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356 call0 (Qzmacs_update_region);
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357 }
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358
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359 void
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360 zmacs_deactivate_region (void)
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361 {
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362 /* This function can GC */
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363 if (zmacs_region_active_p)
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364 call0 (Qzmacs_deactivate_region);
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365 }
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366
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367 Lisp_Object
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368 zmacs_region_buffer (void)
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369 {
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370 if (zmacs_region_active_p)
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371 return call0 (Qzmacs_region_buffer);
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372 else
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373 return Qnil;
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374 }
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375
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20
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376 DEFUN ("mark-marker", Fmark_marker, 0, 2, 0, /*
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0
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377 Return this buffer's mark, as a marker object.
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378 If `zmacs-regions' is true, then this returns nil unless the region is
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379 currently in the active (highlighted) state. If optional argument FORCE
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380 is t, this returns the mark (if there is one) regardless of the zmacs-region
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381 state. You should *generally* not use the mark unless the region is active,
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382 if the user has expressed a preference for the zmacs-region model.
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383 Watch out! Moving this marker changes the mark position.
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384 If you set the marker not to point anywhere, the buffer will have no mark.
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385 If BUFFER is nil, the current buffer is assumed.
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20
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386 */
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387 (force, buffer))
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0
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388 {
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389 struct buffer *b = decode_buffer (buffer, 1);
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390 if (! zmacs_regions || zmacs_region_active_p || !NILP (force))
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391 return b->mark;
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392 return Qnil;
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393 }
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|
|
394
|
|
|
395
|
|
|
396 /* The saved object looks like this:
|
|
|
397
|
|
|
398 (COPY-OF-POINT-MARKER . (COPY-OF-MARK . VISIBLE-P))
|
|
|
399
|
|
|
400 where
|
|
|
401
|
|
|
402 VISIBLE-P is t if `(eq (current-buffer) (window-buffer (selected-window)))'
|
|
|
403 but is not actually used any more.
|
|
|
404 */
|
|
|
405 Lisp_Object
|
|
|
406 save_excursion_save (void)
|
|
|
407 {
|
|
|
408 struct buffer *b;
|
|
|
409 int visible;
|
|
|
410 Lisp_Object tem;
|
|
|
411
|
|
|
412 if (preparing_for_armageddon)
|
|
|
413 return Qnil;
|
|
|
414 else
|
|
|
415 {
|
|
|
416 b = current_buffer;
|
|
|
417 visible = (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == b);
|
|
|
418 tem = ((visible) ? Qt : Qnil);
|
|
|
419 }
|
|
|
420
|
|
|
421 #ifdef ERROR_CHECK_BUFPOS
|
|
|
422 assert (XINT (Fpoint (Qnil)) ==
|
|
|
423 XINT (Fmarker_position (Fpoint_marker (Qt, Qnil))));
|
|
|
424 #endif
|
|
|
425
|
|
|
426 #if 0 /* FSFmacs */
|
|
|
427 tem = Fcons (tem, b->mark_active);
|
|
|
428 #endif
|
|
|
429
|
|
|
430 return noseeum_cons (noseeum_copy_marker (Fpoint_marker (Qt, Qnil), Qnil),
|
|
|
431 noseeum_cons (noseeum_copy_marker (b->mark, Qnil),
|
|
|
432 tem));
|
|
|
433 }
|
|
|
434
|
|
|
435 Lisp_Object
|
|
|
436 save_excursion_restore (Lisp_Object info)
|
|
|
437 {
|
|
|
438 Lisp_Object tem;
|
|
|
439 int visible;
|
|
|
440 struct gcpro gcpro1, gcpro2;
|
|
|
441
|
|
|
442 tem = Fmarker_buffer (Fcar (info));
|
|
|
443 /* If buffer being returned to is now deleted, avoid error */
|
|
|
444 /* Otherwise could get error here while unwinding to top level
|
|
|
445 and crash */
|
|
|
446 /* In that case, Fmarker_buffer returns nil now. */
|
|
|
447 if (NILP (tem))
|
|
|
448 return Qnil;
|
|
|
449 /* Need gcpro in case Lisp hooks get run */
|
|
|
450 GCPRO2 (info, tem);
|
|
|
451 Fset_buffer (tem);
|
|
|
452 tem = Fcar (info);
|
|
|
453 Fgoto_char (tem, Fcurrent_buffer ());
|
|
|
454 tem = Fcar (Fcdr (info));
|
|
|
455 Fset_marker (current_buffer->mark, tem, Fcurrent_buffer ());
|
|
|
456 tem = Fcdr (Fcdr (info));
|
|
|
457 visible = !NILP (tem);
|
|
|
458
|
|
|
459 #if 0 /* We used to make the current buffer visible in the selected window
|
|
|
460 if that was true previously. That avoids some anomalies.
|
|
|
461 But it creates others, and it wasn't documented, and it is simpler
|
|
|
462 and cleaner never to alter the window/buffer connections. */
|
|
|
463 /* #### I'm certain some code somewhere depends on this behavior. --jwz */
|
|
|
464
|
|
|
465 if (visible
|
|
|
466 && (current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)))
|
|
|
467 switch_to_buffer (Fcurrent_buffer (), Qnil);
|
|
|
468 #endif
|
|
|
469
|
|
|
470 UNGCPRO;
|
|
|
471 /* Free all the junk we allocated, so that a `save-excursion' comes
|
|
|
472 for free in terms of GC junk. */
|
|
|
473 free_marker (XMARKER (XCAR (info)));
|
|
|
474 free_marker (XMARKER (XCAR (XCDR (info))));
|
|
|
475 free_cons (XCONS (XCDR (info)));
|
|
|
476 free_cons (XCONS (info));
|
|
|
477 return Qnil;
|
|
|
478 }
|
|
|
479
|
|
20
|
480 DEFUN ("save-excursion", Fsave_excursion, 0, UNEVALLED, 0, /*
|
|
0
|
481 Save point, mark, and current buffer; execute BODY; restore those things.
|
|
|
482 Executes BODY just like `progn'.
|
|
|
483 The values of point, mark and the current buffer are restored
|
|
|
484 even in case of abnormal exit (throw or error).
|
|
20
|
485 */
|
|
|
486 (args))
|
|
0
|
487 {
|
|
|
488 /* This function can GC */
|
|
|
489 int speccount = specpdl_depth ();
|
|
|
490
|
|
|
491 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
492
|
|
|
493 return unbind_to (speccount, Fprogn (args));
|
|
|
494 }
|
|
161
|
495
|
|
|
496 Lisp_Object
|
|
169
|
497 save_current_buffer_restore (Lisp_Object buffer)
|
|
161
|
498 {
|
|
|
499 struct buffer *buf = XBUFFER (buffer);
|
|
|
500 if (!BUFFER_LIVE_P (buf))
|
|
|
501 return Qnil;
|
|
|
502 set_buffer_internal (buf);
|
|
|
503 return Qnil;
|
|
|
504 }
|
|
|
505
|
|
|
506 DEFUN ("save-current-buffer", Fsave_current_buffer, 0, UNEVALLED, 0, /*
|
|
|
507 Save the current buffer; execute BODY; restore the current buffer.
|
|
|
508 Executes BODY just like `progn'.
|
|
|
509 */
|
|
169
|
510 (args))
|
|
161
|
511 {
|
|
|
512 /* This function can GC */
|
|
|
513 int speccount = specpdl_depth ();
|
|
|
514
|
|
|
515 record_unwind_protect (save_current_buffer_restore, Fcurrent_buffer ());
|
|
|
516
|
|
|
517 return unbind_to (speccount, Fprogn (args));
|
|
|
518 }
|
|
0
|
519
|
|
20
|
520 DEFUN ("buffer-size", Fbufsize, 0, 1, 0, /*
|
|
0
|
521 Return the number of characters in BUFFER.
|
|
|
522 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
523 */
|
|
|
524 (buffer))
|
|
0
|
525 {
|
|
|
526 struct buffer *b = decode_buffer (buffer, 1);
|
|
153
|
527 return make_int (BUF_SIZE (b));
|
|
0
|
528 }
|
|
|
529
|
|
20
|
530 DEFUN ("point-min", Fpoint_min, 0, 1, 0, /*
|
|
0
|
531 Return the minimum permissible value of point in BUFFER.
|
|
|
532 This is 1, unless narrowing (a buffer restriction) is in effect.
|
|
|
533 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
534 */
|
|
|
535 (buffer))
|
|
0
|
536 {
|
|
|
537 struct buffer *b = decode_buffer (buffer, 1);
|
|
153
|
538 return make_int (BUF_BEGV (b));
|
|
0
|
539 }
|
|
|
540
|
|
20
|
541 DEFUN ("point-min-marker", Fpoint_min_marker, 0, 1, 0, /*
|
|
0
|
542 Return a marker to the minimum permissible value of point in BUFFER.
|
|
|
543 This is the beginning, unless narrowing (a buffer restriction) is in effect.
|
|
|
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 return buildmark (BUF_BEGV (b), make_buffer (b));
|
|
|
550 }
|
|
|
551
|
|
20
|
552 DEFUN ("point-max", Fpoint_max, 0, 1, 0, /*
|
|
0
|
553 Return the maximum permissible value of point in BUFFER.
|
|
|
554 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
|
|
|
555 is in effect, in which case it is less.
|
|
|
556 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
557 */
|
|
|
558 (buffer))
|
|
0
|
559 {
|
|
153
|
560 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
561 return make_int (BUF_ZV (b));
|
|
0
|
562 }
|
|
|
563
|
|
20
|
564 DEFUN ("point-max-marker", Fpoint_max_marker, 0, 1, 0, /*
|
|
0
|
565 Return a marker to the maximum permissible value of point BUFFER.
|
|
|
566 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
|
|
|
567 is in effect, in which case it is less.
|
|
|
568 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
569 */
|
|
|
570 (buffer))
|
|
0
|
571 {
|
|
|
572 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
573 return buildmark (BUF_ZV (b), make_buffer (b));
|
|
|
574 }
|
|
|
575
|
|
20
|
576 DEFUN ("following-char", Ffollowing_char, 0, 1, 0, /*
|
|
78
|
577 Return the character following point.
|
|
0
|
578 At the end of the buffer or accessible region, return 0.
|
|
|
579 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
580 */
|
|
|
581 (buffer))
|
|
0
|
582 {
|
|
|
583 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
584 if (BUF_PT (b) >= BUF_ZV (b))
|
|
153
|
585 return Qzero; /* #### Gag me! */
|
|
0
|
586 else
|
|
153
|
587 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b)));
|
|
0
|
588 }
|
|
|
589
|
|
20
|
590 DEFUN ("preceding-char", Fpreceding_char, 0, 1, 0, /*
|
|
78
|
591 Return the character preceding point.
|
|
0
|
592 At the beginning of the buffer or accessible region, return 0.
|
|
|
593 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
594 */
|
|
|
595 (buffer))
|
|
0
|
596 {
|
|
|
597 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
598 if (BUF_PT (b) <= BUF_BEGV (b))
|
|
153
|
599 return Qzero; /* #### Gag me! */
|
|
0
|
600 else
|
|
153
|
601 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b) - 1));
|
|
0
|
602 }
|
|
|
603
|
|
20
|
604 DEFUN ("bobp", Fbobp, 0, 1, 0, /*
|
|
0
|
605 Return T if point is at the beginning of the buffer.
|
|
|
606 If the buffer is narrowed, this means the beginning of the narrowed part.
|
|
|
607 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
608 */
|
|
|
609 (buffer))
|
|
0
|
610 {
|
|
|
611 struct buffer *b = decode_buffer (buffer, 1);
|
|
78
|
612 return BUF_PT (b) == BUF_BEGV (b) ? Qt : Qnil;
|
|
0
|
613 }
|
|
|
614
|
|
20
|
615 DEFUN ("eobp", Feobp, 0, 1, 0, /*
|
|
0
|
616 Return T if point is at the end of the buffer.
|
|
|
617 If the buffer is narrowed, this means the end of the narrowed part.
|
|
|
618 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
619 */
|
|
|
620 (buffer))
|
|
0
|
621 {
|
|
|
622 struct buffer *b = decode_buffer (buffer, 1);
|
|
78
|
623 return BUF_PT (b) == BUF_ZV (b) ? Qt : Qnil;
|
|
0
|
624 }
|
|
|
625
|
|
|
626 int
|
|
|
627 beginning_of_line_p (struct buffer *b, Bufpos pt)
|
|
|
628 {
|
|
|
629 if (pt <= BUF_BEGV (b))
|
|
|
630 return 1;
|
|
|
631 return BUF_FETCH_CHAR (b, pt - 1) == '\n';
|
|
|
632 }
|
|
|
633
|
|
|
634
|
|
20
|
635 DEFUN ("bolp", Fbolp, 0, 1, 0, /*
|
|
0
|
636 Return T if point is at the beginning of a line.
|
|
|
637 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
638 */
|
|
|
639 (buffer))
|
|
0
|
640 {
|
|
|
641 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
642
|
|
|
643 return beginning_of_line_p (b, BUF_PT (b)) ? Qt : Qnil;
|
|
|
644 }
|
|
|
645
|
|
20
|
646 DEFUN ("eolp", Feolp, 0, 1, 0, /*
|
|
0
|
647 Return T if point is at the end of a line.
|
|
|
648 `End of a line' includes point being at the end of the buffer.
|
|
|
649 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
650 */
|
|
|
651 (buffer))
|
|
0
|
652 {
|
|
|
653 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
654 if (BUF_PT (b) == BUF_ZV (b) || BUF_FETCH_CHAR (b, BUF_PT (b)) == '\n')
|
|
|
655 return Qt;
|
|
|
656 return Qnil;
|
|
|
657 }
|
|
|
658
|
|
114
|
659 DEFUN ("char-after", Fchar_after, 0, 2, 0, /*
|
|
0
|
660 Return character in BUFFER at position POS.
|
|
|
661 POS is an integer or a buffer pointer.
|
|
|
662 If POS is out of range, the value is nil.
|
|
|
663 If BUFFER is nil, the current buffer is assumed.
|
|
114
|
664 if POS is nil, the value of point is assumed.
|
|
20
|
665 */
|
|
|
666 (pos, buffer))
|
|
0
|
667 {
|
|
|
668 struct buffer *b = decode_buffer (buffer, 1);
|
|
114
|
669 Bufpos n = (NILP (pos) ? BUF_PT (b) :
|
|
|
670 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD));
|
|
0
|
671
|
|
|
672 if (n < 0 || n == BUF_ZV (b))
|
|
|
673 return Qnil;
|
|
114
|
674 return make_char (BUF_FETCH_CHAR (b, n));
|
|
|
675 }
|
|
|
676
|
|
|
677 DEFUN ("char-before", Fchar_before, 0, 2, 0, /*
|
|
|
678 Return character in BUFFER before position POS.
|
|
|
679 POS is an integer or a buffer pointer.
|
|
|
680 If POS is out of range, the value is nil.
|
|
|
681 If BUFFER is nil, the current buffer is assumed.
|
|
|
682 if POS is nil, the value of point is assumed.
|
|
|
683 */
|
|
|
684 (pos, buffer))
|
|
|
685 {
|
|
|
686 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
687 Bufpos n = ((NILP (pos) ? BUF_PT (b) :
|
|
|
688 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD)));
|
|
|
689
|
|
|
690 n--;
|
|
|
691
|
|
|
692 if (n < BUF_BEGV (b))
|
|
|
693 return Qnil;
|
|
|
694 return make_char (BUF_FETCH_CHAR (b, n));
|
|
0
|
695 }
|
|
|
696
|
|
|
697
|
|
20
|
698 DEFUN ("user-login-name", Fuser_login_name, 0, 1, 0, /*
|
|
0
|
699 Return the name under which the user logged in, as a string.
|
|
|
700 This is based on the effective uid, not the real uid.
|
|
|
701 Also, if the environment variable LOGNAME or USER is set,
|
|
|
702 that determines the value of this function.
|
|
|
703 If the optional argument UID is present, then environment variables are
|
|
|
704 ignored and this function returns the login name for that UID, or nil.
|
|
20
|
705 */
|
|
|
706 (uid))
|
|
0
|
707 {
|
|
|
708 struct passwd *pw = NULL;
|
|
|
709
|
|
|
710 if (!NILP (uid))
|
|
|
711 {
|
|
|
712 CHECK_INT (uid);
|
|
|
713 pw = (struct passwd *) getpwuid (XINT (uid));
|
|
|
714 }
|
|
|
715 else
|
|
|
716 {
|
|
|
717 char *user_name;
|
|
|
718 /* #### - when euid != uid, then LOGNAME and USER are leftovers from the
|
|
|
719 old environment (I site observed behavior on sunos and linux), so the
|
|
|
720 environment variables should be disregarded in that case. --Stig */
|
|
|
721 user_name = getenv ("LOGNAME");
|
|
|
722 if (!user_name)
|
|
|
723 #ifdef WINDOWSNT
|
|
|
724 user_name = (char *) getenv ("USERNAME"); /* it's USERNAME on NT */
|
|
|
725 #else /* WINDOWSNT */
|
|
|
726 user_name = (char *) getenv ("USER");
|
|
|
727 #endif /* WINDOWSNT */
|
|
|
728 if (user_name)
|
|
149
|
729 return build_string (user_name);
|
|
0
|
730 else
|
|
|
731 pw = (struct passwd *) getpwuid (geteuid ());
|
|
|
732 }
|
|
|
733 /* #### - I believe this should return nil instead of "unknown" when pw==0 */
|
|
149
|
734 return pw ? build_string (pw->pw_name) : Qnil;
|
|
0
|
735 }
|
|
|
736
|
|
20
|
737 DEFUN ("user-real-login-name", Fuser_real_login_name, 0, 0, 0, /*
|
|
0
|
738 Return the name of the user's real uid, as a string.
|
|
|
739 This ignores the environment variables LOGNAME and USER, so it differs from
|
|
|
740 `user-login-name' when running under `su'.
|
|
20
|
741 */
|
|
|
742 ())
|
|
0
|
743 {
|
|
|
744 struct passwd *pw = (struct passwd *) getpwuid (getuid ());
|
|
|
745 /* #### - I believe this should return nil instead of "unknown" when pw==0 */
|
|
|
746
|
|
|
747 #ifdef MSDOS
|
|
|
748 /* We let the real user name default to "root" because that's quite
|
|
|
749 accurate on MSDOG and because it lets Emacs find the init file.
|
|
|
750 (The DVX libraries override the Djgpp libraries here.) */
|
|
|
751 Lisp_Object tem = build_string (pw ? pw->pw_name : "root");/* no gettext */
|
|
|
752 #else
|
|
|
753 Lisp_Object tem = build_string (pw ? pw->pw_name : "unknown");/* no gettext */
|
|
|
754 #endif
|
|
153
|
755 return tem;
|
|
0
|
756 }
|
|
|
757
|
|
20
|
758 DEFUN ("user-uid", Fuser_uid, 0, 0, 0, /*
|
|
0
|
759 Return the effective uid of Emacs, as an integer.
|
|
20
|
760 */
|
|
|
761 ())
|
|
0
|
762 {
|
|
|
763 return make_int (geteuid ());
|
|
|
764 }
|
|
|
765
|
|
20
|
766 DEFUN ("user-real-uid", Fuser_real_uid, 0, 0, 0, /*
|
|
0
|
767 Return the real uid of Emacs, as an integer.
|
|
20
|
768 */
|
|
|
769 ())
|
|
0
|
770 {
|
|
|
771 return make_int (getuid ());
|
|
|
772 }
|
|
|
773
|
|
20
|
774 DEFUN ("user-full-name", Fuser_full_name, 0, 1, 0, /*
|
|
0
|
775 Return the full name of the user logged in, as a string.
|
|
|
776 If the optional argument USER is given, then the full name for that
|
|
|
777 user is returned, or nil. USER may be either a login name or a uid.
|
|
20
|
778 */
|
|
|
779 (user))
|
|
0
|
780 {
|
|
163
|
781 Lisp_Object user_name = (STRINGP (user) ? user : Fuser_login_name (user));
|
|
0
|
782 struct passwd *pw = NULL;
|
|
|
783 Lisp_Object tem;
|
|
|
784 char *p, *q;
|
|
|
785
|
|
163
|
786 if (!NILP (user_name)) /* nil when nonexistent UID passed as arg */
|
|
0
|
787 {
|
|
163
|
788 CONST char *user_name_ext;
|
|
0
|
789
|
|
|
790 /* Fuck me. getpwnam() can call select() and (under IRIX at least)
|
|
|
791 things get wedged if a SIGIO arrives during this time. */
|
|
163
|
792 GET_C_STRING_OS_DATA_ALLOCA (user_name, user_name_ext);
|
|
0
|
793 slow_down_interrupts ();
|
|
163
|
794 pw = (struct passwd *) getpwnam (user_name_ext);
|
|
0
|
795 speed_up_interrupts ();
|
|
|
796 }
|
|
|
797
|
|
|
798 /* #### - Stig sez: this should return nil instead of "unknown" when pw==0 */
|
|
|
799 /* Ben sez: bad idea because it's likely to break something */
|
|
|
800 #ifndef AMPERSAND_FULL_NAME
|
|
|
801 p = (char *) ((pw) ? USER_FULL_NAME : "unknown"); /* don't gettext */
|
|
|
802 q = (char *) strchr ((char *) p, ',');
|
|
|
803 #else
|
|
|
804 p = (char *) ((pw) ? USER_FULL_NAME : "unknown"); /* don't gettext */
|
|
|
805 q = (char *) strchr ((char *) p, ',');
|
|
|
806 #endif
|
|
|
807 tem = ((!NILP (user) && !pw)
|
|
|
808 ? Qnil
|
|
|
809 : make_ext_string ((unsigned char *) p, (q ? q - p : strlen (p)),
|
|
|
810 FORMAT_OS));
|
|
|
811
|
|
|
812 #ifdef AMPERSAND_FULL_NAME
|
|
|
813 if (!NILP (tem))
|
|
|
814 {
|
|
14
|
815 p = (char *) XSTRING_DATA (tem);
|
|
0
|
816 q = strchr (p, '&');
|
|
|
817 /* Substitute the login name for the &, upcasing the first character. */
|
|
|
818 if (q)
|
|
|
819 {
|
|
163
|
820 char *r = (char *) alloca (strlen (p) + XSTRING_LENGTH (user_name) + 1);
|
|
0
|
821 memcpy (r, p, q - p);
|
|
|
822 r[q - p] = 0;
|
|
163
|
823 strcat (r, (char *) XSTRING_DATA (user_name));
|
|
0
|
824 /* #### current_buffer dependency! */
|
|
|
825 r[q - p] = UPCASE (current_buffer, r[q - p]);
|
|
|
826 strcat (r, q + 1);
|
|
|
827 tem = build_string (r);
|
|
|
828 }
|
|
|
829 }
|
|
|
830 #endif /* AMPERSAND_FULL_NAME */
|
|
|
831
|
|
|
832 p = getenv ("NAME");
|
|
|
833 if (p)
|
|
|
834 tem = build_string (p);
|
|
153
|
835 return tem;
|
|
0
|
836 }
|
|
|
837
|
|
20
|
838 DEFUN ("system-name", Fsystem_name, 0, 0, 0, /*
|
|
0
|
839 Return the name of the machine you are running on, as a string.
|
|
20
|
840 */
|
|
|
841 ())
|
|
0
|
842 {
|
|
153
|
843 return Fcopy_sequence (Vsystem_name);
|
|
0
|
844 }
|
|
|
845
|
|
|
846 /* For the benefit of callers who don't want to include lisp.h.
|
|
|
847 Caller must free! */
|
|
|
848 char *
|
|
|
849 get_system_name (void)
|
|
|
850 {
|
|
14
|
851 return xstrdup ((char *) XSTRING_DATA (Vsystem_name));
|
|
0
|
852 }
|
|
|
853
|
|
20
|
854 DEFUN ("emacs-pid", Femacs_pid, 0, 0, 0, /*
|
|
0
|
855 Return the process ID of Emacs, as an integer.
|
|
20
|
856 */
|
|
|
857 ())
|
|
0
|
858 {
|
|
|
859 return make_int (getpid ());
|
|
|
860 }
|
|
|
861
|
|
20
|
862 DEFUN ("current-time", Fcurrent_time, 0, 0, 0, /*
|
|
0
|
863 Return the current time, as the number of seconds since 1970-01-01 00:00:00.
|
|
|
864 The time is returned as a list of three integers. The first has the
|
|
|
865 most significant 16 bits of the seconds, while the second has the
|
|
|
866 least significant 16 bits. The third integer gives the microsecond
|
|
|
867 count.
|
|
|
868
|
|
|
869 The microsecond count is zero on systems that do not provide
|
|
|
870 resolution finer than a second.
|
|
20
|
871 */
|
|
|
872 ())
|
|
0
|
873 {
|
|
|
874 EMACS_TIME t;
|
|
|
875 Lisp_Object result[3];
|
|
|
876
|
|
|
877 EMACS_GET_TIME (t);
|
|
|
878 XSETINT (result[0], (EMACS_SECS (t) >> 16) & 0xffff);
|
|
|
879 XSETINT (result[1], (EMACS_SECS (t) >> 0) & 0xffff);
|
|
|
880 XSETINT (result[2], EMACS_USECS (t));
|
|
|
881
|
|
|
882 return Flist (3, result);
|
|
|
883 }
|
|
|
884
|
|
20
|
885 DEFUN ("current-process-time", Fcurrent_process_time, 0, 0, 0, /*
|
|
0
|
886 Return the amount of time used by this XEmacs process so far.
|
|
|
887 The return value is a list of three floating-point numbers, expressing
|
|
|
888 the user, system, and real times used by the process. The user time
|
|
|
889 measures the time actually spent by the CPU executing the code in this
|
|
|
890 process. The system time measures time spent by the CPU executing kernel
|
|
|
891 code on behalf of this process (e.g. I/O requests made by the process).
|
|
|
892
|
|
|
893 Note that the user and system times measure processor time, as opposed
|
|
|
894 to real time, and only accrue when the processor is actually doing
|
|
|
895 something: Time spent in an idle wait (waiting for user events to come
|
|
|
896 in or for I/O on a disk drive or other device to complete) does not
|
|
|
897 count. Thus, the user and system times will often be considerably
|
|
|
898 less than the real time.
|
|
|
899
|
|
|
900 Some systems do not allow the user and system times to be distinguished.
|
|
|
901 In this case, the user time will be the total processor time used by
|
|
|
902 the process, and the system time will be 0.
|
|
|
903
|
|
|
904 Some systems do not allow the real and processor times to be distinguished.
|
|
|
905 In this case, the user and real times will be the same and the system
|
|
|
906 time will be 0.
|
|
20
|
907 */
|
|
|
908 ())
|
|
0
|
909 {
|
|
|
910 double user, sys, real;
|
|
|
911
|
|
|
912 get_process_times (&user, &sys, &real);
|
|
|
913 return list3 (make_float (user), make_float (sys), make_float (real));
|
|
|
914 }
|
|
|
915
|
|
|
916
|
|
|
917 int
|
|
|
918 lisp_to_time (Lisp_Object specified_time, time_t *result)
|
|
|
919 {
|
|
|
920 if (NILP (specified_time))
|
|
|
921 return time (result) != -1;
|
|
|
922 else
|
|
|
923 {
|
|
|
924 Lisp_Object high, low;
|
|
|
925 high = Fcar (specified_time);
|
|
|
926 CHECK_INT (high);
|
|
|
927 low = Fcdr (specified_time);
|
|
|
928 if (CONSP (low))
|
|
|
929 low = Fcar (low);
|
|
|
930 CHECK_INT (low);
|
|
|
931 *result = (XINT (high) << 16) + (XINT (low) & 0xffff);
|
|
|
932 return *result >> 16 == XINT (high);
|
|
|
933 }
|
|
|
934 }
|
|
|
935
|
|
|
936 Lisp_Object
|
|
|
937 time_to_lisp (time_t the_time)
|
|
|
938 {
|
|
|
939 unsigned int item = (unsigned int) the_time;
|
|
|
940 return Fcons (make_int (item >> 16), make_int (item & 0xffff));
|
|
|
941 }
|
|
|
942
|
|
|
943 size_t emacs_strftime (char *string, size_t max, CONST char *format,
|
|
|
944 CONST struct tm *tm);
|
|
|
945 static long difftm (CONST struct tm *a, CONST struct tm *b);
|
|
|
946
|
|
|
947
|
|
151
|
948 DEFUN ("format-time-string", Fformat_time_string, 1, 2, 0, /*
|
|
0
|
949 Use FORMAT-STRING to format the time TIME.
|
|
|
950 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from
|
|
151
|
951 `current-time' and `file-attributes'. If TIME is not specified it
|
|
|
952 defaults to the current time.
|
|
0
|
953 FORMAT-STRING may contain %-sequences to substitute parts of the time.
|
|
|
954 %a is replaced by the abbreviated name of the day of week.
|
|
|
955 %A is replaced by the full name of the day of week.
|
|
|
956 %b is replaced by the abbreviated name of the month.
|
|
|
957 %B is replaced by the full name of the month.
|
|
|
958 %c is a synonym for \"%x %X\".
|
|
|
959 %C is a locale-specific synonym, which defaults to \"%A, %B %e, %Y\" in the C locale.
|
|
|
960 %d is replaced by the day of month, zero-padded.
|
|
|
961 %D is a synonym for \"%m/%d/%y\".
|
|
|
962 %e is replaced by the day of month, blank-padded.
|
|
|
963 %h is a synonym for \"%b\".
|
|
|
964 %H is replaced by the hour (00-23).
|
|
|
965 %I is replaced by the hour (00-12).
|
|
|
966 %j is replaced by the day of the year (001-366).
|
|
|
967 %k is replaced by the hour (0-23), blank padded.
|
|
|
968 %l is replaced by the hour (1-12), blank padded.
|
|
|
969 %m is replaced by the month (01-12).
|
|
|
970 %M is replaced by the minute (00-59).
|
|
|
971 %n is a synonym for \"\\n\".
|
|
|
972 %p is replaced by AM or PM, as appropriate.
|
|
|
973 %r is a synonym for \"%I:%M:%S %p\".
|
|
|
974 %R is a synonym for \"%H:%M\".
|
|
|
975 %S is replaced by the second (00-60).
|
|
|
976 %t is a synonym for \"\\t\".
|
|
|
977 %T is a synonym for \"%H:%M:%S\".
|
|
|
978 %U is replaced by the week of the year (00-53), first day of week is Sunday.
|
|
|
979 %w is replaced by the day of week (0-6), Sunday is day 0.
|
|
|
980 %W is replaced by the week of the year (00-53), first day of week is Monday.
|
|
|
981 %x is a locale-specific synonym, which defaults to \"%D\" in the C locale.
|
|
|
982 %X is a locale-specific synonym, which defaults to \"%T\" in the C locale.
|
|
|
983 %y is replaced by the year without century (00-99).
|
|
|
984 %Y is replaced by the year with century.
|
|
|
985 %Z is replaced by the time zone abbreviation.
|
|
|
986
|
|
|
987 The number of options reflects the `strftime' function.
|
|
|
988
|
|
|
989 BUG: If the charset used by the current locale is not ISO 8859-1, the
|
|
|
990 characters appearing in the day and month names may be incorrect.
|
|
20
|
991 */
|
|
|
992 (format_string, _time))
|
|
0
|
993 {
|
|
|
994 time_t value;
|
|
|
995 int size;
|
|
|
996
|
|
|
997 CHECK_STRING (format_string);
|
|
|
998
|
|
|
999 if (! lisp_to_time (_time, &value))
|
|
|
1000 error ("Invalid time specification");
|
|
|
1001
|
|
|
1002 /* This is probably enough. */
|
|
14
|
1003 size = XSTRING_LENGTH (format_string) * 6 + 50;
|
|
0
|
1004
|
|
|
1005 while (1)
|
|
|
1006 {
|
|
|
1007 char *buf = (char *) alloca (size);
|
|
|
1008 *buf = 1;
|
|
|
1009 if (emacs_strftime (buf, size,
|
|
14
|
1010 (CONST char *) XSTRING_DATA (format_string),
|
|
0
|
1011 localtime (&value))
|
|
|
1012 || !*buf)
|
|
|
1013 return build_ext_string (buf, FORMAT_BINARY);
|
|
|
1014 /* If buffer was too small, make it bigger. */
|
|
|
1015 size *= 2;
|
|
|
1016 }
|
|
|
1017 }
|
|
|
1018
|
|
20
|
1019 DEFUN ("decode-time", Fdecode_time, 0, 1, 0, /*
|
|
0
|
1020 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).
|
|
|
1021 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)
|
|
|
1022 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'
|
|
|
1023 to use the current time. The list has the following nine members:
|
|
|
1024 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which
|
|
|
1025 only some operating systems support. MINUTE is an integer between 0 and 59.
|
|
|
1026 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.
|
|
|
1027 MONTH is an integer between 1 and 12. YEAR is an integer indicating the
|
|
|
1028 four-digit year. DOW is the day of week, an integer between 0 and 6, where
|
|
|
1029 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.
|
|
|
1030 ZONE is an integer indicating the number of seconds east of Greenwich.
|
|
|
1031 \(Note that Common Lisp has different meanings for DOW and ZONE.)
|
|
20
|
1032 */
|
|
|
1033 (specified_time))
|
|
0
|
1034 {
|
|
|
1035 time_t time_spec;
|
|
|
1036 struct tm save_tm;
|
|
|
1037 struct tm *decoded_time;
|
|
|
1038 Lisp_Object list_args[9];
|
|
|
1039
|
|
|
1040 if (! lisp_to_time (specified_time, &time_spec))
|
|
|
1041 error ("Invalid time specification");
|
|
|
1042
|
|
|
1043 decoded_time = localtime (&time_spec);
|
|
|
1044 XSETINT (list_args[0], decoded_time->tm_sec);
|
|
|
1045 XSETINT (list_args[1], decoded_time->tm_min);
|
|
|
1046 XSETINT (list_args[2], decoded_time->tm_hour);
|
|
|
1047 XSETINT (list_args[3], decoded_time->tm_mday);
|
|
|
1048 XSETINT (list_args[4], decoded_time->tm_mon + 1);
|
|
|
1049 XSETINT (list_args[5], decoded_time->tm_year + 1900);
|
|
|
1050 XSETINT (list_args[6], decoded_time->tm_wday);
|
|
|
1051 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil;
|
|
|
1052
|
|
|
1053 /* Make a copy, in case gmtime modifies the struct. */
|
|
|
1054 save_tm = *decoded_time;
|
|
|
1055 decoded_time = gmtime (&time_spec);
|
|
|
1056 if (decoded_time == 0)
|
|
|
1057 list_args[8] = Qnil;
|
|
|
1058 else
|
|
|
1059 XSETINT (list_args[8], difftm (&save_tm, decoded_time));
|
|
|
1060 return Flist (9, list_args);
|
|
|
1061 }
|
|
|
1062
|
|
|
1063 static void set_time_zone_rule (char *tzstring);
|
|
|
1064
|
|
20
|
1065 DEFUN ("encode-time", Fencode_time, 6, MANY, 0, /*
|
|
0
|
1066 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.
|
|
|
1067 This is the reverse operation of `decode-time', which see.
|
|
|
1068 ZONE defaults to the current time zone rule. This can
|
|
|
1069 be a string (as from `set-time-zone-rule'), or it can be a list
|
|
|
1070 (as from `current-time-zone') or an integer (as from `decode-time')
|
|
|
1071 applied without consideration for daylight savings time.
|
|
|
1072
|
|
|
1073 You can pass more than 7 arguments; then the first six arguments
|
|
|
1074 are used as SECOND through YEAR, and the *last* argument is used as ZONE.
|
|
|
1075 The intervening arguments are ignored.
|
|
|
1076 This feature lets (apply 'encode-time (decode-time ...)) work.
|
|
|
1077
|
|
|
1078 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;
|
|
|
1079 for example, a DAY of 0 means the day preceding the given month.
|
|
|
1080 Year numbers less than 100 are treated just like other year numbers.
|
|
149
|
1081 If you want them to stand for years in this century, you must do that yourself.
|
|
20
|
1082 */
|
|
|
1083 (int nargs, Lisp_Object *args))
|
|
0
|
1084 {
|
|
|
1085 time_t _time;
|
|
|
1086 struct tm tm;
|
|
|
1087 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil;
|
|
|
1088
|
|
149
|
1089 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */
|
|
|
1090 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */
|
|
|
1091 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */
|
|
|
1092 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */
|
|
|
1093 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */
|
|
|
1094 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */
|
|
0
|
1095
|
|
|
1096 tm.tm_isdst = -1;
|
|
|
1097
|
|
|
1098 if (CONSP (zone))
|
|
|
1099 zone = Fcar (zone);
|
|
|
1100 if (NILP (zone))
|
|
|
1101 _time = mktime (&tm);
|
|
|
1102 else
|
|
|
1103 {
|
|
|
1104 char tzbuf[100];
|
|
|
1105 char *tzstring;
|
|
|
1106 char **oldenv = environ, **newenv;
|
|
|
1107
|
|
|
1108 if (STRINGP (zone))
|
|
14
|
1109 tzstring = (char *) XSTRING_DATA (zone);
|
|
0
|
1110 else if (INTP (zone))
|
|
|
1111 {
|
|
|
1112 int abszone = abs (XINT (zone));
|
|
|
1113 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0),
|
|
|
1114 abszone / (60*60), (abszone/60) % 60, abszone % 60);
|
|
|
1115 tzstring = tzbuf;
|
|
|
1116 }
|
|
|
1117 else
|
|
|
1118 error ("Invalid time zone specification");
|
|
|
1119
|
|
|
1120 /* Set TZ before calling mktime; merely adjusting mktime's returned
|
|
|
1121 value doesn't suffice, since that would mishandle leap seconds. */
|
|
|
1122 set_time_zone_rule (tzstring);
|
|
|
1123
|
|
|
1124 _time = mktime (&tm);
|
|
|
1125
|
|
|
1126 /* Restore TZ to previous value. */
|
|
|
1127 newenv = environ;
|
|
|
1128 environ = oldenv;
|
|
|
1129 free (newenv);
|
|
|
1130 #ifdef LOCALTIME_CACHE
|
|
|
1131 tzset ();
|
|
|
1132 #endif
|
|
|
1133 }
|
|
|
1134
|
|
|
1135 if (_time == (time_t) -1)
|
|
|
1136 error ("Specified time is not representable");
|
|
|
1137
|
|
|
1138 return wasteful_word_to_lisp (_time);
|
|
|
1139 }
|
|
|
1140
|
|
20
|
1141 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /*
|
|
0
|
1142 Return the current time, as a human-readable string.
|
|
|
1143 Programs can use this function to decode a time,
|
|
|
1144 since the number of columns in each field is fixed.
|
|
|
1145 The format is `Sun Sep 16 01:03:52 1973'.
|
|
|
1146 If an argument is given, it specifies a time to format
|
|
|
1147 instead of the current time. The argument should have the form:
|
|
|
1148 (HIGH . LOW)
|
|
|
1149 or the form:
|
|
|
1150 (HIGH LOW . IGNORED).
|
|
|
1151 Thus, you can use times obtained from `current-time'
|
|
|
1152 and from `file-attributes'.
|
|
20
|
1153 */
|
|
|
1154 (specified_time))
|
|
0
|
1155 {
|
|
|
1156 time_t value;
|
|
|
1157 char buf[30];
|
|
|
1158 char *tem;
|
|
|
1159
|
|
|
1160 if (! lisp_to_time (specified_time, &value))
|
|
|
1161 value = -1;
|
|
|
1162 tem = (char *) ctime (&value);
|
|
|
1163
|
|
|
1164 strncpy (buf, tem, 24);
|
|
|
1165 buf[24] = 0;
|
|
|
1166
|
|
|
1167 return build_ext_string (buf, FORMAT_BINARY);
|
|
|
1168 }
|
|
|
1169
|
|
|
1170 #define TM_YEAR_ORIGIN 1900
|
|
|
1171
|
|
|
1172 /* Yield A - B, measured in seconds. */
|
|
|
1173 static long
|
|
|
1174 difftm (CONST struct tm *a, CONST struct tm *b)
|
|
|
1175 {
|
|
|
1176 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1);
|
|
|
1177 int by = b->tm_year + (TM_YEAR_ORIGIN - 1);
|
|
|
1178 /* Some compilers can't handle this as a single return statement. */
|
|
|
1179 long days = (
|
|
|
1180 /* difference in day of year */
|
|
|
1181 a->tm_yday - b->tm_yday
|
|
|
1182 /* + intervening leap days */
|
|
|
1183 + ((ay >> 2) - (by >> 2))
|
|
|
1184 - (ay/100 - by/100)
|
|
|
1185 + ((ay/100 >> 2) - (by/100 >> 2))
|
|
|
1186 /* + difference in years * 365 */
|
|
|
1187 + (long)(ay-by) * 365
|
|
|
1188 );
|
|
|
1189 return (60*(60*(24*days + (a->tm_hour - b->tm_hour))
|
|
|
1190 + (a->tm_min - b->tm_min))
|
|
|
1191 + (a->tm_sec - b->tm_sec));
|
|
|
1192 }
|
|
|
1193
|
|
20
|
1194 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /*
|
|
0
|
1195 Return the offset and name for the local time zone.
|
|
|
1196 This returns a list of the form (OFFSET NAME).
|
|
|
1197 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).
|
|
|
1198 A negative value means west of Greenwich.
|
|
|
1199 NAME is a string giving the name of the time zone.
|
|
|
1200 If an argument is given, it specifies when the time zone offset is determined
|
|
|
1201 instead of using the current time. The argument should have the form:
|
|
|
1202 (HIGH . LOW)
|
|
|
1203 or the form:
|
|
|
1204 (HIGH LOW . IGNORED).
|
|
|
1205 Thus, you can use times obtained from `current-time'
|
|
|
1206 and from `file-attributes'.
|
|
|
1207
|
|
|
1208 Some operating systems cannot provide all this information to Emacs;
|
|
|
1209 in this case, `current-time-zone' returns a list containing nil for
|
|
|
1210 the data it can't find.
|
|
20
|
1211 */
|
|
|
1212 (specified_time))
|
|
0
|
1213 {
|
|
|
1214 time_t value;
|
|
|
1215 struct tm *t;
|
|
|
1216
|
|
|
1217 if (lisp_to_time (specified_time, &value)
|
|
|
1218 && (t = gmtime (&value)) != 0)
|
|
|
1219 {
|
|
|
1220 struct tm gmt;
|
|
|
1221 long offset;
|
|
|
1222 char *s, buf[6];
|
|
|
1223
|
|
|
1224 gmt = *t; /* Make a copy, in case localtime modifies *t. */
|
|
|
1225 t = localtime (&value);
|
|
|
1226 offset = difftm (t, &gmt);
|
|
|
1227 s = 0;
|
|
|
1228 #ifdef HAVE_TM_ZONE
|
|
|
1229 if (t->tm_zone)
|
|
|
1230 s = (char *)t->tm_zone;
|
|
|
1231 #else /* not HAVE_TM_ZONE */
|
|
|
1232 #ifdef HAVE_TZNAME
|
|
|
1233 if (t->tm_isdst == 0 || t->tm_isdst == 1)
|
|
|
1234 s = tzname[t->tm_isdst];
|
|
|
1235 #endif
|
|
|
1236 #endif /* not HAVE_TM_ZONE */
|
|
|
1237 if (!s)
|
|
|
1238 {
|
|
|
1239 /* No local time zone name is available; use "+-NNNN" instead. */
|
|
|
1240 int am = (offset < 0 ? -offset : offset) / 60;
|
|
|
1241 sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60);
|
|
|
1242 s = buf;
|
|
|
1243 }
|
|
|
1244 return list2 (make_int (offset), build_string (s));
|
|
|
1245 }
|
|
|
1246 else
|
|
|
1247 return list2 (Qnil, Qnil);
|
|
|
1248 }
|
|
|
1249
|
|
|
1250 /* Set the local time zone rule to TZSTRING.
|
|
|
1251 This allocates memory into `environ', which it is the caller's
|
|
|
1252 responsibility to free. */
|
|
|
1253 static void
|
|
|
1254 set_time_zone_rule (char *tzstring)
|
|
|
1255 {
|
|
|
1256 int envptrs;
|
|
|
1257 char **from, **to, **newenv;
|
|
|
1258
|
|
|
1259 for (from = environ; *from; from++)
|
|
|
1260 continue;
|
|
|
1261 envptrs = from - environ + 2;
|
|
|
1262 newenv = to = (char **) xmalloc (envptrs * sizeof (char *)
|
|
|
1263 + (tzstring ? strlen (tzstring) + 4 : 0));
|
|
|
1264 if (tzstring)
|
|
|
1265 {
|
|
|
1266 char *t = (char *) (to + envptrs);
|
|
|
1267 strcpy (t, "TZ=");
|
|
|
1268 strcat (t, tzstring);
|
|
|
1269 *to++ = t;
|
|
|
1270 }
|
|
|
1271
|
|
|
1272 for (from = environ; *from; from++)
|
|
|
1273 if (strncmp (*from, "TZ=", 3) != 0)
|
|
|
1274 *to++ = *from;
|
|
|
1275 *to = 0;
|
|
|
1276
|
|
|
1277 environ = newenv;
|
|
|
1278
|
|
|
1279 #ifdef LOCALTIME_CACHE
|
|
|
1280 tzset ();
|
|
|
1281 #endif
|
|
|
1282 }
|
|
|
1283
|
|
20
|
1284 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /*
|
|
0
|
1285 Set the local time zone using TZ, a string specifying a time zone rule.
|
|
|
1286 If TZ is nil, use implementation-defined default time zone information.
|
|
20
|
1287 */
|
|
|
1288 (tz))
|
|
0
|
1289 {
|
|
|
1290 char *tzstring;
|
|
|
1291
|
|
|
1292 if (NILP (tz))
|
|
|
1293 tzstring = 0;
|
|
|
1294 else
|
|
|
1295 {
|
|
|
1296 CHECK_STRING (tz);
|
|
14
|
1297 tzstring = (char *) XSTRING_DATA (tz);
|
|
0
|
1298 }
|
|
|
1299
|
|
|
1300 set_time_zone_rule (tzstring);
|
|
|
1301 if (environbuf)
|
|
|
1302 xfree (environbuf);
|
|
|
1303 environbuf = environ;
|
|
|
1304
|
|
|
1305 return Qnil;
|
|
|
1306 }
|
|
|
1307
|
|
|
1308
|
|
|
1309 void
|
|
|
1310 buffer_insert1 (struct buffer *buf, Lisp_Object arg)
|
|
|
1311 {
|
|
|
1312 /* This function can GC */
|
|
|
1313 struct gcpro gcpro1;
|
|
|
1314 GCPRO1 (arg);
|
|
|
1315 retry:
|
|
|
1316 if (CHAR_OR_CHAR_INTP (arg))
|
|
|
1317 {
|
|
|
1318 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg));
|
|
|
1319 }
|
|
|
1320 else if (STRINGP (arg))
|
|
|
1321 {
|
|
|
1322 buffer_insert_lisp_string (buf, arg);
|
|
|
1323 }
|
|
|
1324 else
|
|
|
1325 {
|
|
|
1326 arg = wrong_type_argument (Qchar_or_string_p, arg);
|
|
|
1327 goto retry;
|
|
|
1328 }
|
|
|
1329 zmacs_region_stays = 0;
|
|
|
1330 UNGCPRO;
|
|
|
1331 }
|
|
|
1332
|
|
|
1333
|
|
|
1334 /* Callers passing one argument to Finsert need not gcpro the
|
|
|
1335 argument "array", since the only element of the array will
|
|
|
1336 not be used after calling insert_emacs_char or insert_lisp_string,
|
|
|
1337 so we don't care if it gets trashed. */
|
|
|
1338
|
|
20
|
1339 DEFUN ("insert", Finsert, 0, MANY, 0, /*
|
|
0
|
1340 Insert the arguments, either strings or characters, at point.
|
|
|
1341 Point moves forward so that it ends up after the inserted text.
|
|
|
1342 Any other markers at the point of insertion remain before the text.
|
|
|
1343 If a string has non-null string-extent-data, new extents will be created.
|
|
20
|
1344 */
|
|
|
1345 (int nargs, Lisp_Object *args))
|
|
0
|
1346 {
|
|
|
1347 /* This function can GC */
|
|
|
1348 REGISTER int argnum;
|
|
|
1349
|
|
|
1350 for (argnum = 0; argnum < nargs; argnum++)
|
|
|
1351 {
|
|
|
1352 buffer_insert1 (current_buffer, args[argnum]);
|
|
|
1353 }
|
|
|
1354
|
|
|
1355 return Qnil;
|
|
|
1356 }
|
|
|
1357
|
|
20
|
1358 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /*
|
|
0
|
1359 Insert strings or characters at point, relocating markers after the text.
|
|
|
1360 Point moves forward so that it ends up after the inserted text.
|
|
|
1361 Any other markers at the point of insertion also end up after the text.
|
|
20
|
1362 */
|
|
|
1363 (int nargs, Lisp_Object *args))
|
|
0
|
1364 {
|
|
|
1365 /* This function can GC */
|
|
|
1366 REGISTER int argnum;
|
|
|
1367 REGISTER Lisp_Object tem;
|
|
|
1368
|
|
|
1369 for (argnum = 0; argnum < nargs; argnum++)
|
|
|
1370 {
|
|
|
1371 tem = args[argnum];
|
|
|
1372 retry:
|
|
|
1373 if (CHAR_OR_CHAR_INTP (tem))
|
|
|
1374 {
|
|
|
1375 buffer_insert_emacs_char_1 (current_buffer, -1,
|
|
|
1376 XCHAR_OR_CHAR_INT (tem),
|
|
|
1377 INSDEL_BEFORE_MARKERS);
|
|
|
1378 }
|
|
|
1379 else if (STRINGP (tem))
|
|
|
1380 {
|
|
|
1381 buffer_insert_lisp_string_1 (current_buffer, -1, tem,
|
|
|
1382 INSDEL_BEFORE_MARKERS);
|
|
|
1383 }
|
|
|
1384 else
|
|
|
1385 {
|
|
|
1386 tem = wrong_type_argument (Qchar_or_string_p, tem);
|
|
|
1387 goto retry;
|
|
|
1388 }
|
|
|
1389 }
|
|
|
1390 zmacs_region_stays = 0;
|
|
|
1391 return Qnil;
|
|
|
1392 }
|
|
|
1393
|
|
20
|
1394 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /*
|
|
0
|
1395 Insert STRING into BUFFER at BUFFER's point.
|
|
|
1396 Point moves forward so that it ends up after the inserted text.
|
|
|
1397 Any other markers at the point of insertion remain before the text.
|
|
|
1398 If a string has non-null string-extent-data, new extents will be created.
|
|
|
1399 BUFFER defaults to the current buffer.
|
|
20
|
1400 */
|
|
|
1401 (string, buffer))
|
|
0
|
1402 {
|
|
153
|
1403 struct buffer *b = decode_buffer (buffer, 1);
|
|
0
|
1404 CHECK_STRING (string);
|
|
153
|
1405 buffer_insert_lisp_string (b, string);
|
|
0
|
1406 zmacs_region_stays = 0;
|
|
|
1407 return Qnil;
|
|
|
1408 }
|
|
|
1409
|
|
|
1410 /* Third argument in FSF is INHERIT:
|
|
|
1411
|
|
|
1412 "The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
|
|
|
1413 from adjoining text, if those properties are sticky."
|
|
|
1414
|
|
|
1415 Jamie thinks this is bogus. */
|
|
|
1416
|
|
|
1417
|
|
20
|
1418 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /*
|
|
0
|
1419 Insert COUNT (second arg) copies of CHR (first arg).
|
|
|
1420 Point and all markers are affected as in the function `insert'.
|
|
|
1421 COUNT defaults to 1 if omitted.
|
|
|
1422 The optional third arg IGNORED is INHERIT under FSF Emacs.
|
|
|
1423 This is highly bogus, however, and XEmacs always behaves as if
|
|
|
1424 `t' were passed to INHERIT.
|
|
|
1425 The optional fourth arg BUFFER specifies the buffer to insert the
|
|
|
1426 text into. If BUFFER is nil, the current buffer is assumed.
|
|
20
|
1427 */
|
|
|
1428 (chr, count, ignored, buffer))
|
|
0
|
1429 {
|
|
|
1430 /* This function can GC */
|
|
|
1431 REGISTER Bufbyte *string;
|
|
|
1432 REGISTER int slen;
|
|
|
1433 REGISTER int i, j;
|
|
|
1434 REGISTER Bytecount n;
|
|
|
1435 REGISTER Bytecount charlen;
|
|
|
1436 Bufbyte str[MAX_EMCHAR_LEN];
|
|
153
|
1437 struct buffer *b = decode_buffer (buffer, 1);
|
|
0
|
1438 int cou;
|
|
|
1439
|
|
|
1440 CHECK_CHAR_COERCE_INT (chr);
|
|
|
1441 if (NILP (count))
|
|
|
1442 cou = 1;
|
|
|
1443 else
|
|
|
1444 {
|
|
|
1445 CHECK_INT (count);
|
|
|
1446 cou = XINT (count);
|
|
|
1447 }
|
|
|
1448
|
|
|
1449 charlen = set_charptr_emchar (str, XCHAR (chr));
|
|
|
1450 n = cou * charlen;
|
|
|
1451 if (n <= 0)
|
|
|
1452 return Qnil;
|
|
|
1453 slen = min (n, 768);
|
|
|
1454 string = (Bufbyte *) alloca (slen * sizeof (Bufbyte));
|
|
|
1455 /* Write as many copies of the character into the temp string as will fit. */
|
|
|
1456 for (i = 0; i + charlen <= slen; i += charlen)
|
|
|
1457 for (j = 0; j < charlen; j++)
|
|
|
1458 string[i + j] = str[j];
|
|
|
1459 slen = i;
|
|
|
1460 while (n >= slen)
|
|
|
1461 {
|
|
153
|
1462 buffer_insert_raw_string (b, string, slen);
|
|
0
|
1463 n -= slen;
|
|
|
1464 }
|
|
|
1465 if (n > 0)
|
|
|
1466 #if 0 /* FSFmacs bogosity */
|
|
|
1467 {
|
|
|
1468 if (!NILP (inherit))
|
|
|
1469 insert_and_inherit (string, n);
|
|
|
1470 else
|
|
|
1471 insert (string, n);
|
|
|
1472 }
|
|
|
1473 #else
|
|
153
|
1474 buffer_insert_raw_string (b, string, n);
|
|
0
|
1475 #endif
|
|
|
1476
|
|
|
1477 zmacs_region_stays = 0;
|
|
|
1478 return Qnil;
|
|
|
1479 }
|
|
|
1480
|
|
|
1481
|
|
|
1482 /* Making strings from buffer contents. */
|
|
|
1483
|
|
20
|
1484 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /*
|
|
0
|
1485 Return the contents of part of BUFFER as a string.
|
|
|
1486 The two arguments START and END are character positions;
|
|
|
1487 they can be in either order. If omitted, they default to the beginning
|
|
|
1488 and end of BUFFER, respectively.
|
|
|
1489 If there are duplicable extents in the region, the string remembers
|
|
|
1490 them in its extent data.
|
|
|
1491 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
1492 */
|
|
|
1493 (start, end, buffer))
|
|
0
|
1494 {
|
|
|
1495 /* This function can GC */
|
|
|
1496 Bufpos begv, zv;
|
|
|
1497 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1498
|
|
|
1499 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
|
|
|
1500 return make_string_from_buffer (b, begv, zv - begv);
|
|
|
1501 }
|
|
|
1502
|
|
20
|
1503 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /*
|
|
0
|
1504 Insert before point a substring of the contents of buffer BUFFER.
|
|
|
1505 BUFFER may be a buffer or a buffer name.
|
|
|
1506 Arguments START and END are character numbers specifying the substring.
|
|
|
1507 They default to the beginning and the end of BUFFER.
|
|
20
|
1508 */
|
|
|
1509 (buffer, start, end))
|
|
0
|
1510 {
|
|
|
1511 /* This function can GC */
|
|
|
1512 Bufpos b, e;
|
|
|
1513 struct buffer *bp;
|
|
|
1514
|
|
|
1515 bp = XBUFFER (get_buffer (buffer, 1));
|
|
|
1516 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL);
|
|
|
1517
|
|
|
1518 if (b < e)
|
|
|
1519 buffer_insert_from_buffer (current_buffer, bp, b, e - b);
|
|
|
1520
|
|
|
1521 return Qnil;
|
|
|
1522 }
|
|
|
1523
|
|
20
|
1524 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /*
|
|
0
|
1525 Compare two substrings of two buffers; return result as number.
|
|
|
1526 the value is -N if first string is less after N-1 chars,
|
|
|
1527 +N if first string is greater after N-1 chars, or 0 if strings match.
|
|
|
1528 Each substring is represented as three arguments: BUFFER, START and END.
|
|
|
1529 That makes six args in all, three for each substring.
|
|
|
1530
|
|
|
1531 The value of `case-fold-search' in the current buffer
|
|
|
1532 determines whether case is significant or ignored.
|
|
20
|
1533 */
|
|
|
1534 (buffer1, start1, end1, buffer2, start2, end2))
|
|
0
|
1535 {
|
|
|
1536 Bufpos begp1, endp1, begp2, endp2;
|
|
|
1537 REGISTER Charcount len1, len2, length, i;
|
|
|
1538 struct buffer *bp1, *bp2;
|
|
|
1539 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ?
|
|
|
1540 current_buffer->case_canon_table : Qnil);
|
|
|
1541
|
|
|
1542 /* Find the first buffer and its substring. */
|
|
|
1543
|
|
|
1544 bp1 = decode_buffer (buffer1, 1);
|
|
|
1545 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL);
|
|
|
1546
|
|
|
1547 /* Likewise for second substring. */
|
|
|
1548
|
|
|
1549 bp2 = decode_buffer (buffer2, 1);
|
|
|
1550 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL);
|
|
|
1551
|
|
|
1552 len1 = endp1 - begp1;
|
|
|
1553 len2 = endp2 - begp2;
|
|
|
1554 length = len1;
|
|
|
1555 if (len2 < length)
|
|
|
1556 length = len2;
|
|
|
1557
|
|
|
1558 for (i = 0; i < length; i++)
|
|
|
1559 {
|
|
|
1560 Emchar c1 = BUF_FETCH_CHAR (bp1, begp1 + i);
|
|
|
1561 Emchar c2 = BUF_FETCH_CHAR (bp2, begp2 + i);
|
|
|
1562 if (!NILP (trt))
|
|
|
1563 {
|
|
|
1564 c1 = TRT_TABLE_OF (trt, c1);
|
|
|
1565 c2 = TRT_TABLE_OF (trt, c2);
|
|
|
1566 }
|
|
|
1567 if (c1 < c2)
|
|
|
1568 return make_int (- 1 - i);
|
|
|
1569 if (c1 > c2)
|
|
|
1570 return make_int (i + 1);
|
|
|
1571 }
|
|
|
1572
|
|
|
1573 /* The strings match as far as they go.
|
|
|
1574 If one is shorter, that one is less. */
|
|
|
1575 if (length < len1)
|
|
|
1576 return make_int (length + 1);
|
|
|
1577 else if (length < len2)
|
|
|
1578 return make_int (- length - 1);
|
|
|
1579
|
|
|
1580 /* Same length too => they are equal. */
|
|
|
1581 return Qzero;
|
|
|
1582 }
|
|
|
1583
|
|
|
1584
|
|
|
1585 static Lisp_Object
|
|
|
1586 subst_char_in_region_unwind (Lisp_Object arg)
|
|
|
1587 {
|
|
|
1588 XBUFFER (XCAR (arg))->undo_list = XCDR (arg);
|
|
|
1589 return Qnil;
|
|
|
1590 }
|
|
|
1591
|
|
|
1592 static Lisp_Object
|
|
|
1593 subst_char_in_region_unwind_1 (Lisp_Object arg)
|
|
|
1594 {
|
|
|
1595 XBUFFER (XCAR (arg))->filename = XCDR (arg);
|
|
|
1596 return Qnil;
|
|
|
1597 }
|
|
|
1598
|
|
20
|
1599 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /*
|
|
0
|
1600 From START to END, replace FROMCHAR with TOCHAR each time it occurs.
|
|
|
1601 If optional arg NOUNDO is non-nil, don't record this change for undo
|
|
|
1602 and don't mark the buffer as really changed.
|
|
20
|
1603 */
|
|
70
|
1604 (start, end, fromchar, tochar, noundo))
|
|
0
|
1605 {
|
|
|
1606 /* This function can GC */
|
|
|
1607 Bufpos pos, stop;
|
|
|
1608 Emchar fromc, toc;
|
|
|
1609 int mc_count;
|
|
|
1610 struct buffer *buf = current_buffer;
|
|
|
1611 int count = specpdl_depth ();
|
|
|
1612
|
|
|
1613 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
|
|
|
1614 CHECK_CHAR_COERCE_INT (fromchar);
|
|
|
1615 CHECK_CHAR_COERCE_INT (tochar);
|
|
|
1616
|
|
|
1617 fromc = XCHAR (fromchar);
|
|
|
1618 toc = XCHAR (tochar);
|
|
|
1619
|
|
|
1620 /* If we don't want undo, turn off putting stuff on the list.
|
|
|
1621 That's faster than getting rid of things,
|
|
|
1622 and it prevents even the entry for a first change.
|
|
|
1623 Also inhibit locking the file. */
|
|
|
1624 if (!NILP (noundo))
|
|
|
1625 {
|
|
|
1626 record_unwind_protect (subst_char_in_region_unwind,
|
|
|
1627 Fcons (Fcurrent_buffer (), buf->undo_list));
|
|
|
1628 buf->undo_list = Qt;
|
|
|
1629 /* Don't do file-locking. */
|
|
|
1630 record_unwind_protect (subst_char_in_region_unwind_1,
|
|
|
1631 Fcons (Fcurrent_buffer (), buf->filename));
|
|
|
1632 buf->filename = Qnil;
|
|
|
1633 }
|
|
|
1634
|
|
|
1635 mc_count = begin_multiple_change (buf, pos, stop);
|
|
|
1636 while (pos < stop)
|
|
|
1637 {
|
|
|
1638 if (BUF_FETCH_CHAR (buf, pos) == fromc)
|
|
|
1639 {
|
|
|
1640 /* There used to be some code here that set the buffer to
|
|
|
1641 unmodified if NOUNDO was specified and there was only
|
|
|
1642 one change to the buffer since it was last saved.
|
|
|
1643 This is a crock of shit, so I'm not duplicating this
|
|
|
1644 behavior. I think this was left over from when
|
|
|
1645 prepare_to_modify_buffer() actually bumped MODIFF,
|
|
|
1646 so that code was supposed to undo this change. --ben */
|
|
|
1647 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0);
|
|
|
1648
|
|
|
1649 /* If noundo is not nil then we don't mark the buffer as
|
|
|
1650 modified. In reality that needs to happen externally
|
|
|
1651 only. Internally redisplay needs to know that the actual
|
|
|
1652 contents it should be displaying have changed. */
|
|
|
1653 if (!NILP (noundo))
|
|
|
1654 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil);
|
|
|
1655 }
|
|
|
1656 pos++;
|
|
|
1657 }
|
|
|
1658 end_multiple_change (buf, mc_count);
|
|
|
1659
|
|
|
1660 unbind_to (count, Qnil);
|
|
|
1661 return Qnil;
|
|
|
1662 }
|
|
|
1663
|
|
20
|
1664 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /*
|
|
0
|
1665 From START to END, translate characters according to TABLE.
|
|
|
1666 TABLE is a string; the Nth character in it is the mapping
|
|
|
1667 for the character with code N. Returns the number of characters changed.
|
|
20
|
1668 */
|
|
|
1669 (start, end, table))
|
|
0
|
1670 {
|
|
|
1671 /* This function can GC */
|
|
|
1672 Bufpos pos, stop; /* Limits of the region. */
|
|
|
1673 REGISTER Emchar oc; /* Old character. */
|
|
|
1674 REGISTER Emchar nc; /* New character. */
|
|
|
1675 int cnt; /* Number of changes made. */
|
|
|
1676 Charcount size; /* Size of translate table. */
|
|
|
1677 int mc_count;
|
|
|
1678 struct buffer *buf = current_buffer;
|
|
|
1679
|
|
|
1680 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
|
|
|
1681 CHECK_STRING (table);
|
|
|
1682
|
|
|
1683 size = string_char_length (XSTRING (table));
|
|
|
1684
|
|
|
1685 cnt = 0;
|
|
|
1686 mc_count = begin_multiple_change (buf, pos, stop);
|
|
|
1687 for (; pos < stop; pos++)
|
|
|
1688 {
|
|
|
1689 oc = BUF_FETCH_CHAR (buf, pos);
|
|
|
1690 if (oc >= 0 && oc < size)
|
|
|
1691 {
|
|
|
1692 nc = string_char (XSTRING (table), oc);
|
|
|
1693 if (nc != oc)
|
|
|
1694 {
|
|
|
1695 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1696 ++cnt;
|
|
|
1697 }
|
|
|
1698 }
|
|
|
1699 }
|
|
|
1700 end_multiple_change (buf, mc_count);
|
|
|
1701
|
|
|
1702 return make_int (cnt);
|
|
|
1703 }
|
|
|
1704
|
|
20
|
1705 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /*
|
|
0
|
1706 Delete the text between point and mark.
|
|
|
1707 When called from a program, expects two arguments,
|
|
|
1708 positions (integers or markers) specifying the stretch to be deleted.
|
|
|
1709 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
1710 */
|
|
|
1711 (b, e, buffer))
|
|
0
|
1712 {
|
|
|
1713 /* This function can GC */
|
|
|
1714 Bufpos start, end;
|
|
|
1715 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1716
|
|
|
1717 get_buffer_range_char (buf, b, e, &start, &end, 0);
|
|
|
1718 buffer_delete_range (buf, start, end, 0);
|
|
|
1719 zmacs_region_stays = 0;
|
|
|
1720 return Qnil;
|
|
|
1721 }
|
|
|
1722
|
|
|
1723 void
|
|
|
1724 widen_buffer (struct buffer *b, int no_clip)
|
|
|
1725 {
|
|
|
1726 if (BUF_BEGV (b) != BUF_BEG (b))
|
|
|
1727 {
|
|
|
1728 clip_changed = 1;
|
|
|
1729 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BI_BUF_BEG (b));
|
|
|
1730 }
|
|
|
1731 if (BUF_ZV (b) != BUF_Z (b))
|
|
|
1732 {
|
|
|
1733 clip_changed = 1;
|
|
|
1734 SET_BOTH_BUF_ZV (b, BUF_Z (b), BI_BUF_Z (b));
|
|
|
1735 }
|
|
|
1736 if (clip_changed)
|
|
|
1737 {
|
|
|
1738 if (!no_clip)
|
|
|
1739 MARK_CLIP_CHANGED;
|
|
|
1740 /* Changing the buffer bounds invalidates any recorded current
|
|
|
1741 column. */
|
|
|
1742 invalidate_current_column ();
|
|
|
1743 }
|
|
|
1744 }
|
|
|
1745
|
|
20
|
1746 DEFUN ("widen", Fwiden, 0, 1, "", /*
|
|
0
|
1747 Remove restrictions (narrowing) from BUFFER.
|
|
|
1748 This allows the buffer's full text to be seen and edited.
|
|
|
1749 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
1750 */
|
|
|
1751 (buffer))
|
|
0
|
1752 {
|
|
|
1753 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1754 widen_buffer (b, 0);
|
|
|
1755 zmacs_region_stays = 0;
|
|
|
1756 return Qnil;
|
|
|
1757 }
|
|
|
1758
|
|
20
|
1759 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /*
|
|
0
|
1760 Restrict editing in BUFFER to the current region.
|
|
|
1761 The rest of the text becomes temporarily invisible and untouchable
|
|
|
1762 but is not deleted; if you save the buffer in a file, the invisible
|
|
|
1763 text is included in the file. \\[widen] makes all visible again.
|
|
|
1764 If BUFFER is nil, the current buffer is assumed.
|
|
|
1765 See also `save-restriction'.
|
|
|
1766
|
|
|
1767 When calling from a program, pass two arguments; positions (integers
|
|
|
1768 or markers) bounding the text that should remain visible.
|
|
20
|
1769 */
|
|
|
1770 (b, e, buffer))
|
|
0
|
1771 {
|
|
|
1772 Bufpos start, end;
|
|
|
1773 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1774 Bytind bi_start, bi_end;
|
|
|
1775
|
|
|
1776 get_buffer_range_char (buf, b, e, &start, &end, GB_ALLOW_PAST_ACCESSIBLE);
|
|
|
1777 bi_start = bufpos_to_bytind (buf, start);
|
|
|
1778 bi_end = bufpos_to_bytind (buf, end);
|
|
|
1779
|
|
|
1780 SET_BOTH_BUF_BEGV (buf, start, bi_start);
|
|
|
1781 SET_BOTH_BUF_ZV (buf, end, bi_end);
|
|
|
1782 if (BUF_PT (buf) < start)
|
|
|
1783 BUF_SET_PT (buf, start);
|
|
|
1784 if (BUF_PT (buf) > end)
|
|
|
1785 BUF_SET_PT (buf, end);
|
|
|
1786 MARK_CLIP_CHANGED;
|
|
|
1787 /* Changing the buffer bounds invalidates any recorded current column. */
|
|
|
1788 invalidate_current_column ();
|
|
|
1789 zmacs_region_stays = 0;
|
|
|
1790 return Qnil;
|
|
|
1791 }
|
|
|
1792
|
|
|
1793 Lisp_Object
|
|
|
1794 save_restriction_save (void)
|
|
|
1795 {
|
|
|
1796 Lisp_Object bottom, top;
|
|
|
1797 /* Note: I tried using markers here, but it does not win
|
|
|
1798 because insertion at the end of the saved region
|
|
|
1799 does not advance mh and is considered "outside" the saved region. */
|
|
|
1800 bottom = make_int (BUF_BEGV (current_buffer) - BUF_BEG (current_buffer));
|
|
|
1801 top = make_int (BUF_Z (current_buffer) - BUF_ZV (current_buffer));
|
|
|
1802
|
|
|
1803 return noseeum_cons (Fcurrent_buffer (), noseeum_cons (bottom, top));
|
|
|
1804 }
|
|
|
1805
|
|
|
1806 Lisp_Object
|
|
|
1807 save_restriction_restore (Lisp_Object data)
|
|
|
1808 {
|
|
|
1809 struct buffer *buf;
|
|
|
1810 Charcount newhead, newtail;
|
|
|
1811 Lisp_Object tem;
|
|
|
1812 int local_clip_changed = 0;
|
|
|
1813
|
|
|
1814 buf = XBUFFER (Fcar (data));
|
|
|
1815 if (!BUFFER_LIVE_P (buf))
|
|
|
1816 /* someone could have killed the buffer in the meantime ... */
|
|
|
1817 return Qnil;
|
|
|
1818 tem = Fcdr (data);
|
|
|
1819 newhead = XINT (Fcar (tem));
|
|
|
1820 newtail = XINT (Fcdr (tem));
|
|
|
1821 while (CONSP (data))
|
|
|
1822 {
|
|
|
1823 struct Lisp_Cons *victim = XCONS (data);
|
|
|
1824 data = victim->cdr;
|
|
|
1825 free_cons (victim);
|
|
|
1826 }
|
|
|
1827
|
|
|
1828 if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf))
|
|
|
1829 {
|
|
|
1830 newhead = 0;
|
|
|
1831 newtail = 0;
|
|
|
1832 }
|
|
|
1833 {
|
|
|
1834 Bufpos start, end;
|
|
|
1835 Bytind bi_start, bi_end;
|
|
|
1836
|
|
|
1837 start = BUF_BEG (buf) + newhead;
|
|
|
1838 end = BUF_Z (buf) - newtail;
|
|
|
1839
|
|
|
1840 bi_start = bufpos_to_bytind (buf, start);
|
|
|
1841 bi_end = bufpos_to_bytind (buf, end);
|
|
|
1842
|
|
|
1843 if (BUF_BEGV (buf) != start)
|
|
|
1844 {
|
|
|
1845 local_clip_changed = 1;
|
|
|
1846 SET_BOTH_BUF_BEGV (buf, start, bi_start);
|
|
|
1847 }
|
|
|
1848 if (BUF_ZV (buf) != end)
|
|
|
1849 {
|
|
|
1850 local_clip_changed = 1;
|
|
|
1851 SET_BOTH_BUF_ZV (buf, end, bi_end);
|
|
|
1852 }
|
|
|
1853 }
|
|
|
1854 if (local_clip_changed)
|
|
|
1855 MARK_CLIP_CHANGED;
|
|
|
1856
|
|
|
1857 /* If point is outside the new visible range, move it inside. */
|
|
|
1858 BUF_SET_PT (buf,
|
|
|
1859 bufpos_clip_to_bounds (BUF_BEGV (buf),
|
|
|
1860 BUF_PT (buf),
|
|
|
1861 BUF_ZV (buf)));
|
|
|
1862
|
|
|
1863 return Qnil;
|
|
|
1864 }
|
|
|
1865
|
|
20
|
1866 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /*
|
|
0
|
1867 Execute BODY, saving and restoring current buffer's restrictions.
|
|
|
1868 The buffer's restrictions make parts of the beginning and end invisible.
|
|
|
1869 \(They are set up with `narrow-to-region' and eliminated with `widen'.)
|
|
|
1870 This special form, `save-restriction', saves the current buffer's restrictions
|
|
|
1871 when it is entered, and restores them when it is exited.
|
|
|
1872 So any `narrow-to-region' within BODY lasts only until the end of the form.
|
|
|
1873 The old restrictions settings are restored
|
|
|
1874 even in case of abnormal exit (throw or error).
|
|
|
1875
|
|
|
1876 The value returned is the value of the last form in BODY.
|
|
|
1877
|
|
|
1878 `save-restriction' can get confused if, within the BODY, you widen
|
|
|
1879 and then make changes outside the area within the saved restrictions.
|
|
|
1880
|
|
|
1881 Note: if you are using both `save-excursion' and `save-restriction',
|
|
|
1882 use `save-excursion' outermost:
|
|
|
1883 (save-excursion (save-restriction ...))
|
|
20
|
1884 */
|
|
|
1885 (body))
|
|
0
|
1886 {
|
|
|
1887 /* This function can GC */
|
|
|
1888 int speccount = specpdl_depth ();
|
|
|
1889
|
|
|
1890 record_unwind_protect (save_restriction_restore, save_restriction_save ());
|
|
|
1891
|
|
|
1892 return unbind_to (speccount, Fprogn (body));
|
|
|
1893 }
|
|
|
1894
|
|
|
1895
|
|
20
|
1896 DEFUN ("format", Fformat, 1, MANY, 0, /*
|
|
0
|
1897 Format a string out of a control-string and arguments.
|
|
|
1898 The first argument is a control string.
|
|
|
1899 The other arguments are substituted into it to make the result, a string.
|
|
|
1900 It may contain %-sequences meaning to substitute the next argument.
|
|
|
1901 %s means print all objects as-is, using `princ'.
|
|
|
1902 %S means print all objects as s-expressions, using `prin1'.
|
|
|
1903 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex,
|
|
|
1904 %X uppercase hex).
|
|
|
1905 %c means print as a single character.
|
|
|
1906 %f means print as a floating-point number in fixed notation (e.g. 785.200).
|
|
|
1907 %e or %E means print as a floating-point number in scientific notation
|
|
|
1908 (e.g. 7.85200e+03).
|
|
|
1909 %g or %G means print as a floating-point number in \"pretty format\";
|
|
|
1910 depending on the number, either %f or %e/%E format will be used, and
|
|
|
1911 trailing zeroes are removed from the fractional part.
|
|
|
1912 The argument used for all but %s and %S must be a number. It will be
|
|
|
1913 converted to an integer or a floating-point number as necessary.
|
|
|
1914
|
|
|
1915 %$ means reposition to read a specific numbered argument; for example,
|
|
|
1916 %3$s would apply the `%s' to the third argument after the control string,
|
|
|
1917 and the next format directive would use the fourth argument, the
|
|
|
1918 following one the fifth argument, etc. (There must be a positive integer
|
|
|
1919 between the % and the $).
|
|
|
1920 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be
|
|
|
1921 specified between the optional repositioning spec and the conversion
|
|
|
1922 character; see below.
|
|
|
1923 An optional minimum field width may be specified after any flag characters
|
|
|
1924 and before the conversion character; it specifies the minimum number of
|
|
|
1925 characters that the converted argument will take up. Padding will be
|
|
|
1926 added on the left (or on the right, if the `-' flag is specified), as
|
|
|
1927 necessary. Padding is done with spaces, or with zeroes if the `0' flag
|
|
|
1928 is specified.
|
|
|
1929 An optional period character and precision may be specified after any
|
|
|
1930 minimum field width. It specifies the minimum number of digits to
|
|
|
1931 appear in %d, %i, %o, %x, and %X conversions (the number is padded
|
|
|
1932 on the left with zeroes as necessary); the number of digits printed
|
|
|
1933 after the decimal point for %f, %e, and %E conversions; the number
|
|
|
1934 of significant digits printed in %g and %G conversions; and the
|
|
|
1935 maximum number of non-padding characters printed in %s and %S
|
|
|
1936 conversions. The default precision for floating-point conversions
|
|
|
1937 is six.
|
|
|
1938
|
|
|
1939 The ` ' and `+' flags mean prefix non-negative numbers with a space or
|
|
|
1940 plus sign, respectively.
|
|
|
1941 The `#' flag means print numbers in an alternate, more verbose format:
|
|
|
1942 octal numbers begin with zero; hex numbers begin with a 0x or 0X;
|
|
|
1943 a decimal point is printed in %f, %e, and %E conversions even if no
|
|
|
1944 numbers are printed after it; and trailing zeroes are not omitted in
|
|
|
1945 %g and %G conversions.
|
|
|
1946
|
|
|
1947 Use %% to put a single % into the output.
|
|
20
|
1948 */
|
|
|
1949 (int nargs, Lisp_Object *args))
|
|
0
|
1950 {
|
|
|
1951 /* It should not be necessary to GCPRO ARGS, because
|
|
|
1952 the caller in the interpreter should take care of that. */
|
|
|
1953
|
|
|
1954 CHECK_STRING (args[0]);
|
|
|
1955 return emacs_doprnt_string_lisp (0, args[0], 0, nargs - 1, args + 1);
|
|
|
1956 }
|
|
|
1957
|
|
|
1958
|
|
20
|
1959 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /*
|
|
0
|
1960 Return t if two characters match, optionally ignoring case.
|
|
110
|
1961 Both arguments must be characters (i.e. NOT integers).
|
|
0
|
1962 Case is ignored if `case-fold-search' is non-nil in BUFFER.
|
|
|
1963 If BUFFER is nil, the current buffer is assumed.
|
|
20
|
1964 */
|
|
|
1965 (c1, c2, buffer))
|
|
0
|
1966 {
|
|
|
1967 Emchar x1, x2;
|
|
153
|
1968 struct buffer *b = decode_buffer (buffer, 1);
|
|
0
|
1969
|
|
|
1970 CHECK_CHAR_COERCE_INT (c1);
|
|
|
1971 CHECK_CHAR_COERCE_INT (c2);
|
|
|
1972 x1 = XCHAR (c1);
|
|
|
1973 x2 = XCHAR (c2);
|
|
|
1974
|
|
153
|
1975 return (!NILP (b->case_fold_search)
|
|
|
1976 ? DOWNCASE (b, x1) == DOWNCASE (b, x2)
|
|
|
1977 : x1 == x2)
|
|
|
1978 ? Qt : Qnil;
|
|
0
|
1979 }
|
|
110
|
1980
|
|
|
1981 DEFUN ("char=", Fchar_Equal, 2, 3, 0, /*
|
|
|
1982 Return t if two characters match, case is significant.
|
|
|
1983 Both arguments must be characters (i.e. NOT integers).
|
|
|
1984 The optional buffer argument is for symmetry and is ignored.
|
|
|
1985 */
|
|
|
1986 (c1, c2, buffer))
|
|
|
1987 {
|
|
|
1988 CHECK_CHAR_COERCE_INT (c1);
|
|
|
1989 CHECK_CHAR_COERCE_INT (c2);
|
|
|
1990
|
|
153
|
1991 return XCHAR(c1) == XCHAR(c2) ? Qt : Qnil;
|
|
110
|
1992 }
|
|
0
|
1993
|
|
|
1994 #if 0 /* Undebugged FSFmacs code */
|
|
|
1995 /* Transpose the markers in two regions of the current buffer, and
|
|
|
1996 adjust the ones between them if necessary (i.e.: if the regions
|
|
|
1997 differ in size).
|
|
|
1998
|
|
|
1999 Traverses the entire marker list of the buffer to do so, adding an
|
|
|
2000 appropriate amount to some, subtracting from some, and leaving the
|
|
|
2001 rest untouched. Most of this is copied from adjust_markers in insdel.c.
|
|
|
2002
|
|
|
2003 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
|
|
|
2004
|
|
|
2005 void
|
|
|
2006 transpose_markers (Bufpos start1, Bufpos end1, Bufpos start2, Bufpos end2)
|
|
|
2007 {
|
|
|
2008 Charcount amt1, amt2, diff;
|
|
|
2009 Bufpos mpos;
|
|
|
2010 Lisp_Object marker;
|
|
|
2011 struct buffer *buf = current_buffer;
|
|
|
2012
|
|
|
2013 /* Update point as if it were a marker. */
|
|
|
2014 if (BUF_PT (buf) < start1)
|
|
|
2015 ;
|
|
|
2016 else if (BUF_PT (buf) < end1)
|
|
|
2017 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1));
|
|
|
2018 else if (BUF_PT (buf) < start2)
|
|
|
2019 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1));
|
|
|
2020 else if (BUF_PT (buf) < end2)
|
|
|
2021 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1));
|
|
|
2022
|
|
|
2023 /* We used to adjust the endpoints here to account for the gap, but that
|
|
|
2024 isn't good enough. Even if we assume the caller has tried to move the
|
|
|
2025 gap out of our way, it might still be at start1 exactly, for example;
|
|
|
2026 and that places it `inside' the interval, for our purposes. The amount
|
|
|
2027 of adjustment is nontrivial if there's a `denormalized' marker whose
|
|
|
2028 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
|
|
|
2029 the dirty work to Fmarker_position, below. */
|
|
|
2030
|
|
|
2031 /* The difference between the region's lengths */
|
|
|
2032 diff = (end2 - start2) - (end1 - start1);
|
|
|
2033
|
|
|
2034 /* For shifting each marker in a region by the length of the other
|
|
|
2035 * region plus the distance between the regions.
|
|
|
2036 */
|
|
|
2037 amt1 = (end2 - start2) + (start2 - end1);
|
|
|
2038 amt2 = (end1 - start1) + (start2 - end1);
|
|
|
2039
|
|
|
2040 for (marker = BUF_MARKERS (buf); !NILP (marker);
|
|
|
2041 marker = XMARKER (marker)->chain)
|
|
|
2042 {
|
|
|
2043 mpos = marker_position (marker);
|
|
|
2044 if (mpos >= start1 && mpos < end2)
|
|
|
2045 {
|
|
|
2046 if (mpos < end1)
|
|
|
2047 mpos += amt1;
|
|
|
2048 else if (mpos < start2)
|
|
|
2049 mpos += diff;
|
|
|
2050 else
|
|
|
2051 mpos -= amt2;
|
|
|
2052 set_marker_position (marker, mpos);
|
|
|
2053 }
|
|
|
2054 }
|
|
|
2055 }
|
|
|
2056
|
|
153
|
2057 #endif /* 0 */
|
|
0
|
2058
|
|
20
|
2059 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /*
|
|
0
|
2060 Transpose region START1 to END1 with START2 to END2.
|
|
|
2061 The regions may not be overlapping, because the size of the buffer is
|
|
|
2062 never changed in a transposition.
|
|
|
2063
|
|
|
2064 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose
|
|
|
2065 any markers that happen to be located in the regions. (#### BUG: currently
|
|
|
2066 this function always acts as if LEAVE_MARKERS is non-nil.)
|
|
|
2067
|
|
|
2068 Transposing beyond buffer boundaries is an error.
|
|
20
|
2069 */
|
|
70
|
2070 (startr1, endr1, startr2, endr2, leave_markers))
|
|
0
|
2071 {
|
|
|
2072 Bufpos start1, end1, start2, end2;
|
|
|
2073 Charcount len1, len2;
|
|
|
2074 Lisp_Object string1, string2;
|
|
|
2075 struct buffer *buf = current_buffer;
|
|
|
2076
|
|
|
2077 get_buffer_range_char (buf, startr1, endr1, &start1, &end1, 0);
|
|
|
2078 get_buffer_range_char (buf, startr2, endr2, &start2, &end2, 0);
|
|
|
2079
|
|
|
2080 len1 = end1 - start1;
|
|
|
2081 len2 = end2 - start2;
|
|
|
2082
|
|
|
2083 if (start2 < end1)
|
|
|
2084 error ("transposed regions not properly ordered");
|
|
|
2085 else if (start1 == end1 || start2 == end2)
|
|
|
2086 error ("transposed region may not be of length 0");
|
|
|
2087
|
|
|
2088 string1 = make_string_from_buffer (buf, start1, len1);
|
|
|
2089 string2 = make_string_from_buffer (buf, start2, len2);
|
|
|
2090 buffer_delete_range (buf, start2, end2, 0);
|
|
|
2091 buffer_insert_lisp_string_1 (buf, start2, string1, 0);
|
|
|
2092 buffer_delete_range (buf, start1, end1, 0);
|
|
|
2093 buffer_insert_lisp_string_1 (buf, start1, string2, 0);
|
|
|
2094
|
|
|
2095 /* In FSFmacs there is a whole bunch of really ugly code here
|
|
|
2096 to attempt to transpose the regions without using up any
|
|
|
2097 extra memory. Although the intent may be good, the result
|
|
|
2098 was highly bogus. */
|
|
|
2099
|
|
|
2100 return Qnil;
|
|
|
2101 }
|
|
|
2102
|
|
|
2103
|
|
|
2104 /************************************************************************/
|
|
|
2105 /* initialization */
|
|
|
2106 /************************************************************************/
|
|
|
2107
|
|
|
2108 void
|
|
|
2109 syms_of_editfns (void)
|
|
|
2110 {
|
|
|
2111 defsymbol (&Qpoint, "point");
|
|
|
2112 defsymbol (&Qmark, "mark");
|
|
|
2113 defsymbol (&Qregion_beginning, "region-beginning");
|
|
|
2114 defsymbol (&Qregion_end, "region-end");
|
|
|
2115 defsymbol (&Qformat, "format");
|
|
|
2116
|
|
20
|
2117 DEFSUBR (Fchar_equal);
|
|
110
|
2118 DEFSUBR (Fchar_Equal);
|
|
20
|
2119 DEFSUBR (Fgoto_char);
|
|
|
2120 DEFSUBR (Fstring_to_char);
|
|
|
2121 DEFSUBR (Fchar_to_string);
|
|
|
2122 DEFSUBR (Fbuffer_substring);
|
|
0
|
2123
|
|
20
|
2124 DEFSUBR (Fpoint_marker);
|
|
|
2125 DEFSUBR (Fmark_marker);
|
|
|
2126 DEFSUBR (Fpoint);
|
|
|
2127 DEFSUBR (Fregion_beginning);
|
|
|
2128 DEFSUBR (Fregion_end);
|
|
|
2129 DEFSUBR (Fsave_excursion);
|
|
161
|
2130 DEFSUBR (Fsave_current_buffer);
|
|
0
|
2131
|
|
20
|
2132 DEFSUBR (Fbufsize);
|
|
|
2133 DEFSUBR (Fpoint_max);
|
|
|
2134 DEFSUBR (Fpoint_min);
|
|
|
2135 DEFSUBR (Fpoint_min_marker);
|
|
|
2136 DEFSUBR (Fpoint_max_marker);
|
|
0
|
2137
|
|
20
|
2138 DEFSUBR (Fbobp);
|
|
|
2139 DEFSUBR (Feobp);
|
|
|
2140 DEFSUBR (Fbolp);
|
|
|
2141 DEFSUBR (Feolp);
|
|
|
2142 DEFSUBR (Ffollowing_char);
|
|
|
2143 DEFSUBR (Fpreceding_char);
|
|
|
2144 DEFSUBR (Fchar_after);
|
|
114
|
2145 DEFSUBR (Fchar_before);
|
|
20
|
2146 DEFSUBR (Finsert);
|
|
|
2147 DEFSUBR (Finsert_string);
|
|
|
2148 DEFSUBR (Finsert_before_markers);
|
|
|
2149 DEFSUBR (Finsert_char);
|
|
0
|
2150
|
|
20
|
2151 DEFSUBR (Fuser_login_name);
|
|
|
2152 DEFSUBR (Fuser_real_login_name);
|
|
|
2153 DEFSUBR (Fuser_uid);
|
|
|
2154 DEFSUBR (Fuser_real_uid);
|
|
|
2155 DEFSUBR (Fuser_full_name);
|
|
|
2156 DEFSUBR (Femacs_pid);
|
|
|
2157 DEFSUBR (Fcurrent_time);
|
|
|
2158 DEFSUBR (Fcurrent_process_time);
|
|
|
2159 DEFSUBR (Fformat_time_string);
|
|
|
2160 DEFSUBR (Fdecode_time);
|
|
|
2161 DEFSUBR (Fencode_time);
|
|
|
2162 DEFSUBR (Fcurrent_time_string);
|
|
|
2163 DEFSUBR (Fcurrent_time_zone);
|
|
|
2164 DEFSUBR (Fset_time_zone_rule);
|
|
|
2165 DEFSUBR (Fsystem_name);
|
|
|
2166 DEFSUBR (Fformat);
|
|
0
|
2167
|
|
20
|
2168 DEFSUBR (Finsert_buffer_substring);
|
|
|
2169 DEFSUBR (Fcompare_buffer_substrings);
|
|
|
2170 DEFSUBR (Fsubst_char_in_region);
|
|
|
2171 DEFSUBR (Ftranslate_region);
|
|
|
2172 DEFSUBR (Fdelete_region);
|
|
|
2173 DEFSUBR (Fwiden);
|
|
|
2174 DEFSUBR (Fnarrow_to_region);
|
|
|
2175 DEFSUBR (Fsave_restriction);
|
|
|
2176 DEFSUBR (Ftranspose_regions);
|
|
0
|
2177
|
|
|
2178 defsymbol (&Qzmacs_update_region, "zmacs-update-region");
|
|
|
2179 defsymbol (&Qzmacs_deactivate_region, "zmacs-deactivate-region");
|
|
|
2180 defsymbol (&Qzmacs_region_buffer, "zmacs-region-buffer");
|
|
|
2181 }
|
|
|
2182
|
|
|
2183 void
|
|
|
2184 vars_of_editfns (void)
|
|
|
2185 {
|
|
|
2186 staticpro (&Vsystem_name);
|
|
|
2187 #if 0
|
|
|
2188 staticpro (&Vuser_full_name);
|
|
|
2189 staticpro (&Vuser_name);
|
|
|
2190 staticpro (&Vuser_real_name);
|
|
|
2191 #endif
|
|
|
2192 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /*
|
|
|
2193 *Whether LISPM-style active regions should be used.
|
|
|
2194 This means that commands which operate on the region (the area between the
|
|
|
2195 point and the mark) will only work while the region is in the ``active''
|
|
|
2196 state, which is indicated by highlighting. Executing most commands causes
|
|
|
2197 the region to not be in the active state, so (for example) \\[kill-region] will only
|
|
|
2198 work immediately after activating the region.
|
|
|
2199
|
|
|
2200 More specifically:
|
|
|
2201
|
|
|
2202 - Commands which operate on the region only work if the region is active.
|
|
|
2203 - Only a very small set of commands cause the region to become active:
|
|
|
2204 Those commands whose semantics are to mark an area, like mark-defun.
|
|
|
2205 - The region is deactivated after each command that is executed, except that:
|
|
|
2206 - \"Motion\" commands do not change whether the region is active or not.
|
|
|
2207
|
|
|
2208 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the
|
|
|
2209 cursor with normal motion commands (C-n, C-p, etc) will cause the region
|
|
|
2210 between point and the recently-pushed mark to be highlighted. It will
|
|
110
|
2211 remain highlighted until some non-motion command is executed.
|
|
0
|
2212
|
|
|
2213 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a
|
|
|
2214 region and execute a command that operates on it, you can reactivate the
|
|
|
2215 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it
|
|
|
2216 again.
|
|
|
2217
|
|
|
2218 Generally, commands which push marks as a means of navigation (like
|
|
|
2219 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the
|
|
|
2220 region. But commands which push marks as a means of marking an area of
|
|
|
2221 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer]))
|
|
|
2222 do activate the region.
|
|
|
2223
|
|
|
2224 The way the command loop actually works with regard to deactivating the
|
|
|
2225 region is as follows:
|
|
|
2226
|
|
|
2227 - If the variable `zmacs-region-stays' has been set to t during the command
|
|
|
2228 just executed, the region is left alone (this is how the motion commands
|
|
|
2229 make the region stay around; see the `_' flag in the `interactive'
|
|
|
2230 specification). `zmacs-region-stays' is reset to nil before each command
|
|
|
2231 is executed.
|
|
|
2232 - If the function `zmacs-activate-region' has been called during the command
|
|
|
2233 just executed, the region is left alone. Very few functions should
|
|
|
2234 actually call this function.
|
|
|
2235 - Otherwise, if the region is active, the region is deactivated and
|
|
|
2236 the `zmacs-deactivate-region-hook' is called.
|
|
|
2237 */ );
|
|
|
2238 /* Zmacs style active regions are now ON by default */
|
|
|
2239 zmacs_regions = 1;
|
|
|
2240
|
|
|
2241 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /*
|
|
|
2242 Do not alter this. It is for internal use only.
|
|
|
2243 */ );
|
|
|
2244 zmacs_region_active_p = 0;
|
|
|
2245
|
|
|
2246 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /*
|
|
|
2247 Commands which do not wish to affect whether the region is currently
|
|
|
2248 highlighted should set this to t. Normally, the region is turned off after
|
|
|
2249 executing each command that did not explicitly turn it on with the function
|
|
|
2250 zmacs-activate-region. Setting this to true lets a command be non-intrusive.
|
|
|
2251 See the variable `zmacs-regions'.
|
|
|
2252 */ );
|
|
|
2253 zmacs_region_stays = 0;
|
|
|
2254
|
|
|
2255 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /*
|
|
|
2256 Do not use this -- it will be going away soon.
|
|
|
2257 Indicates if `goto-char' has just been run. This information is allegedly
|
|
|
2258 needed to get the desired behavior for atomic extents and unfortunately
|
|
|
2259 is not available by any other means.
|
|
|
2260 */ );
|
|
|
2261 atomic_extent_goto_char_p = 0;
|
|
|
2262 }
|
