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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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135 getpwnam ((char *) string_data (XSTRING (Vuser_login_name)));
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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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145 p = string_data (XSTRING (Vuser_full_name));
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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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151 alloca (strlen ((char *) p) +
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152 string_length (XSTRING (Vuser_login_name)) + 1);
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153 Charcount fullname_off = bytecount_to_charcount (p, q - p);
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154 memcpy (r, p, q - p);
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155 r[q - p] = 0;
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156 strcat (r, (char *) string_data (XSTRING (Vuser_login_name)));
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157 strcat (r, q + 1);
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158 Vuser_full_name = build_string (r);
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159 set_string_char (XSTRING (Vuser_full_name), fullname_off,
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160 UPCASE (current_buffer,
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161 string_char (XSTRING (Vuser_full_name),
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162 fullname_off)));
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163 }
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164 #endif /* AMPERSAND_FULL_NAME */
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165
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166 p = (Bufbyte *) getenv ("NAME");
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167 if (p)
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168 Vuser_full_name = build_string ((char *) p);
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169 #endif /* 0 */
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170 }
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171
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172 DEFUN ("char-to-string", Fchar_to_string, Schar_to_string, 1, 1, 0 /*
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173 Convert arg CH to a one-character string containing that character.
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174 */ )
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175 (ch)
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176 Lisp_Object ch;
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177 {
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178 Bytecount len;
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179 Bufbyte str[MAX_EMCHAR_LEN];
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180
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181 if (EVENTP (ch))
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182 {
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183 Lisp_Object ch2 = Fevent_to_character (ch, Qt, Qnil, Qnil);
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184 if (NILP (ch2))
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185 return
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186 signal_simple_continuable_error
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187 ("character has no ASCII equivalent:", Fcopy_event (ch, Qnil));
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188 ch = ch2;
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189 }
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190
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191 CHECK_CHAR_COERCE_INT (ch);
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192
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193 len = set_charptr_emchar (str, XCHAR (ch));
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194 return make_string (str, len);
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195 }
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196
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197 DEFUN ("string-to-char", Fstring_to_char, Sstring_to_char, 1, 1, 0 /*
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198 Convert arg STRING to a character, the first character of that string.
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199 */ )
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200 (str)
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201 Lisp_Object str;
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202 {
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203 struct Lisp_String *p;
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204 CHECK_STRING (str);
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205
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206 p = XSTRING (str);
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207 if (string_length (p) != 0)
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208 {
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209 return (make_char (string_char (p, 0)));
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210 }
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211 else /* #### Gag me! */
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212 return (Qzero);
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213 }
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214
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215
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216 static Lisp_Object
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217 buildmark (Bufpos val, Lisp_Object buffer)
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218 {
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219 Lisp_Object mark;
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220 mark = Fmake_marker ();
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221 Fset_marker (mark, make_int (val), buffer);
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222 return mark;
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223 }
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224
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225 DEFUN ("point", Fpoint, Spoint, 0, 1, 0 /*
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226 Return value of point, as an integer.
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227 Beginning of buffer is position (point-min).
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228 If BUFFER is nil, the current buffer is assumed.
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229 */ )
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230 (buffer)
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231 Lisp_Object buffer;
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232 {
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233 struct buffer *b = decode_buffer (buffer, 1);
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234 return (make_int (BUF_PT (b)));
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235 }
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236
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237 DEFUN ("point-marker", Fpoint_marker, Spoint_marker, 0, 2, 0 /*
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238 Return value of point, as a marker object.
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239 This marker is a copy; you may modify it with reckless abandon.
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240 If optional argument DONT-COPY-P is non-nil, then it returns the real
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241 point-marker; modifying the position of this marker will move point.
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242 It is illegal to change the buffer of it, or make it point nowhere.
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243 If BUFFER is nil, the current buffer is assumed.
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244 */ )
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245 (dont_copy_p, buffer)
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246 Lisp_Object dont_copy_p, buffer;
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247 {
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248 struct buffer *b = decode_buffer (buffer, 1);
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249 if (NILP (dont_copy_p))
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250 return Fcopy_marker (b->point_marker, Qnil);
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251 return b->point_marker;
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252 }
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253
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254 /* The following two functions end up being identical but it's
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255 cleaner to declare them separately. */
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256
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257 Bufpos
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258 bufpos_clip_to_bounds (Bufpos lower, Bufpos num, Bufpos upper)
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259 {
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260 if (num < lower)
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261 return lower;
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262 else if (num > upper)
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263 return upper;
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264 else
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265 return num;
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266 }
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267
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268 Bytind
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269 bytind_clip_to_bounds (Bytind lower, Bytind num, Bytind upper)
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270 {
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271 if (num < lower)
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272 return lower;
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273 else if (num > upper)
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274 return upper;
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275 else
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276 return num;
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277 }
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278
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279 /*
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280 * Chuck says:
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281 * There is no absolute way to determine if goto-char is the function
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282 * being run. this-command doesn't work because it is often eval'd
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283 * and this-command ends up set to eval-expression. So this flag gets
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284 * added for now.
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285 *
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286 * Jamie thinks he's wrong, but we'll leave this in for now.
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287 */
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288 int atomic_extent_goto_char_p;
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289
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290 DEFUN ("goto-char", Fgoto_char, Sgoto_char, 1, 2, "NGoto char: " /*
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291 Set point to POSITION, a number or marker.
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292 Beginning of buffer is position (point-min), end is (point-max).
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293 If BUFFER is nil, the current buffer is assumed.
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294 Return value of POSITION, as an integer.
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295 */ )
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296 (position, buffer)
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297 Lisp_Object position, buffer;
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298 {
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299 struct buffer *b = decode_buffer (buffer, 1);
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300 Bufpos n = get_buffer_pos_char (b, position, GB_COERCE_RANGE);
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301 BUF_SET_PT (b, n);
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302 atomic_extent_goto_char_p = 1;
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303 return (make_int (n));
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304 }
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305
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306 static Lisp_Object
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307 region_limit (int beginningp, struct buffer *b)
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308 {
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309 Lisp_Object m;
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310
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311 #if 0 /* FSFmacs */
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312 if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive)
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313 && NILP (b->mark_active))
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314 Fsignal (Qmark_inactive, Qnil);
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315 #endif
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316 m = Fmarker_position (b->mark);
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317 if (NILP (m)) error ("There is no region now");
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318 if (!!(BUF_PT (b) < XINT (m)) == !!beginningp)
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319 return (make_int (BUF_PT (b)));
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320 else
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321 return (m);
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322 }
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323
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324 DEFUN ("region-beginning", Fregion_beginning, Sregion_beginning, 0, 1, 0 /*
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325 Return position of beginning of region, as an integer.
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326 If BUFFER is nil, the current buffer is assumed.
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327 */ )
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328 (buffer)
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329 Lisp_Object buffer;
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330 {
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331 return (region_limit (1, decode_buffer (buffer, 1)));
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332 }
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333
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334 DEFUN ("region-end", Fregion_end, Sregion_end, 0, 1, 0 /*
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335 Return position of end of region, as an integer.
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336 If BUFFER is nil, the current buffer is assumed.
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337 */ )
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338 (buffer)
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339 Lisp_Object buffer;
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340 {
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341 return (region_limit (0, decode_buffer (buffer, 1)));
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342 }
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343
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344 /* Whether to use lispm-style active-regions */
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345 int zmacs_regions;
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346
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347 /* Whether the zmacs region is active. This is not per-buffer because
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348 there can be only one active region at a time. #### Now that the
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349 zmacs region are not directly tied to the X selections this may not
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350 necessarily have to be true. */
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351 int zmacs_region_active_p;
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352
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353 int zmacs_region_stays;
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354
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355 Lisp_Object Qzmacs_update_region, Qzmacs_deactivate_region;
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356 Lisp_Object Qzmacs_region_buffer;
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357
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358 void
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359 zmacs_update_region (void)
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360 {
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361 /* This function can GC */
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362 if (zmacs_region_active_p)
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363 call0 (Qzmacs_update_region);
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364 }
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365
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366 void
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367 zmacs_deactivate_region (void)
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368 {
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369 /* This function can GC */
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370 if (zmacs_region_active_p)
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371 call0 (Qzmacs_deactivate_region);
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372 }
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373
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374 Lisp_Object
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375 zmacs_region_buffer (void)
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376 {
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377 if (zmacs_region_active_p)
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378 return call0 (Qzmacs_region_buffer);
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379 else
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380 return Qnil;
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381 }
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382
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383 DEFUN ("mark-marker", Fmark_marker, Smark_marker, 0, 2, 0 /*
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384 Return this buffer's mark, as a marker object.
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385 If `zmacs-regions' is true, then this returns nil unless the region is
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386 currently in the active (highlighted) state. If optional argument FORCE
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387 is t, this returns the mark (if there is one) regardless of the zmacs-region
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388 state. You should *generally* not use the mark unless the region is active,
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389 if the user has expressed a preference for the zmacs-region model.
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390 Watch out! Moving this marker changes the mark position.
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391 If you set the marker not to point anywhere, the buffer will have no mark.
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392 If BUFFER is nil, the current buffer is assumed.
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393 */ )
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394 (force, buffer)
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395 Lisp_Object force, buffer;
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396 {
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397 struct buffer *b = decode_buffer (buffer, 1);
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398 if (! zmacs_regions || zmacs_region_active_p || !NILP (force))
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399 return b->mark;
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400 return Qnil;
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401 }
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|
|
402
|
|
|
403
|
|
|
404 /* The saved object looks like this:
|
|
|
405
|
|
|
406 (COPY-OF-POINT-MARKER . (COPY-OF-MARK . VISIBLE-P))
|
|
|
407
|
|
|
408 where
|
|
|
409
|
|
|
410 VISIBLE-P is t if `(eq (current-buffer) (window-buffer (selected-window)))'
|
|
|
411 but is not actually used any more.
|
|
|
412 */
|
|
|
413 Lisp_Object
|
|
|
414 save_excursion_save (void)
|
|
|
415 {
|
|
|
416 struct buffer *b;
|
|
|
417 int visible;
|
|
|
418 Lisp_Object tem;
|
|
|
419
|
|
|
420 if (preparing_for_armageddon)
|
|
|
421 return Qnil;
|
|
|
422 else
|
|
|
423 {
|
|
|
424 b = current_buffer;
|
|
|
425 visible = (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == b);
|
|
|
426 tem = ((visible) ? Qt : Qnil);
|
|
|
427 }
|
|
|
428
|
|
|
429 #ifdef ERROR_CHECK_BUFPOS
|
|
|
430 assert (XINT (Fpoint (Qnil)) ==
|
|
|
431 XINT (Fmarker_position (Fpoint_marker (Qt, Qnil))));
|
|
|
432 #endif
|
|
|
433
|
|
|
434 #if 0 /* FSFmacs */
|
|
|
435 tem = Fcons (tem, b->mark_active);
|
|
|
436 #endif
|
|
|
437
|
|
|
438 return noseeum_cons (noseeum_copy_marker (Fpoint_marker (Qt, Qnil), Qnil),
|
|
|
439 noseeum_cons (noseeum_copy_marker (b->mark, Qnil),
|
|
|
440 tem));
|
|
|
441 }
|
|
|
442
|
|
|
443 Lisp_Object
|
|
|
444 save_excursion_restore (Lisp_Object info)
|
|
|
445 {
|
|
|
446 Lisp_Object tem;
|
|
|
447 int visible;
|
|
|
448 struct gcpro gcpro1, gcpro2;
|
|
|
449
|
|
|
450 tem = Fmarker_buffer (Fcar (info));
|
|
|
451 /* If buffer being returned to is now deleted, avoid error */
|
|
|
452 /* Otherwise could get error here while unwinding to top level
|
|
|
453 and crash */
|
|
|
454 /* In that case, Fmarker_buffer returns nil now. */
|
|
|
455 if (NILP (tem))
|
|
|
456 return Qnil;
|
|
|
457 /* Need gcpro in case Lisp hooks get run */
|
|
|
458 GCPRO2 (info, tem);
|
|
|
459 Fset_buffer (tem);
|
|
|
460 tem = Fcar (info);
|
|
|
461 Fgoto_char (tem, Fcurrent_buffer ());
|
|
|
462 tem = Fcar (Fcdr (info));
|
|
|
463 Fset_marker (current_buffer->mark, tem, Fcurrent_buffer ());
|
|
|
464 tem = Fcdr (Fcdr (info));
|
|
|
465 visible = !NILP (tem);
|
|
|
466
|
|
|
467 #if 0 /* We used to make the current buffer visible in the selected window
|
|
|
468 if that was true previously. That avoids some anomalies.
|
|
|
469 But it creates others, and it wasn't documented, and it is simpler
|
|
|
470 and cleaner never to alter the window/buffer connections. */
|
|
|
471 /* #### I'm certain some code somewhere depends on this behavior. --jwz */
|
|
|
472
|
|
|
473 if (visible
|
|
|
474 && (current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)))
|
|
|
475 switch_to_buffer (Fcurrent_buffer (), Qnil);
|
|
|
476 #endif
|
|
|
477
|
|
|
478 UNGCPRO;
|
|
|
479 /* Free all the junk we allocated, so that a `save-excursion' comes
|
|
|
480 for free in terms of GC junk. */
|
|
|
481 free_marker (XMARKER (XCAR (info)));
|
|
|
482 free_marker (XMARKER (XCAR (XCDR (info))));
|
|
|
483 free_cons (XCONS (XCDR (info)));
|
|
|
484 free_cons (XCONS (info));
|
|
|
485 return Qnil;
|
|
|
486 }
|
|
|
487
|
|
|
488 DEFUN ("save-excursion", Fsave_excursion, Ssave_excursion, 0, UNEVALLED, 0 /*
|
|
|
489 Save point, mark, and current buffer; execute BODY; restore those things.
|
|
|
490 Executes BODY just like `progn'.
|
|
|
491 The values of point, mark and the current buffer are restored
|
|
|
492 even in case of abnormal exit (throw or error).
|
|
|
493 */ )
|
|
|
494 (args)
|
|
|
495 Lisp_Object args;
|
|
|
496 {
|
|
|
497 /* This function can GC */
|
|
|
498 int speccount = specpdl_depth ();
|
|
|
499
|
|
|
500 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
501
|
|
|
502 return unbind_to (speccount, Fprogn (args));
|
|
|
503 }
|
|
|
504
|
|
|
505 DEFUN ("buffer-size", Fbufsize, Sbufsize, 0, 1, 0 /*
|
|
|
506 Return the number of characters in BUFFER.
|
|
|
507 If BUFFER is nil, the current buffer is assumed.
|
|
|
508 */ )
|
|
|
509 (buffer)
|
|
|
510 Lisp_Object buffer;
|
|
|
511 {
|
|
|
512 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
513 return (make_int (BUF_SIZE (b)));
|
|
|
514 }
|
|
|
515
|
|
|
516 DEFUN ("point-min", Fpoint_min, Spoint_min, 0, 1, 0 /*
|
|
|
517 Return the minimum permissible value of point in BUFFER.
|
|
|
518 This is 1, unless narrowing (a buffer restriction) is in effect.
|
|
|
519 If BUFFER is nil, the current buffer is assumed.
|
|
|
520 */ )
|
|
|
521 (buffer)
|
|
|
522 Lisp_Object buffer;
|
|
|
523 {
|
|
|
524 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
525 return (make_int (BUF_BEGV (b)));
|
|
|
526 }
|
|
|
527
|
|
|
528 DEFUN ("point-min-marker", Fpoint_min_marker, Spoint_min_marker, 0, 1, 0 /*
|
|
|
529 Return a marker to the minimum permissible value of point in BUFFER.
|
|
|
530 This is the beginning, unless narrowing (a buffer restriction) is in effect.
|
|
|
531 If BUFFER is nil, the current buffer is assumed.
|
|
|
532 */ )
|
|
|
533 (buffer)
|
|
|
534 Lisp_Object buffer;
|
|
|
535 {
|
|
|
536 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
537 return buildmark (BUF_BEGV (b), make_buffer (b));
|
|
|
538 }
|
|
|
539
|
|
|
540 DEFUN ("point-max", Fpoint_max, Spoint_max, 0, 1, 0 /*
|
|
|
541 Return the maximum permissible value of point in BUFFER.
|
|
|
542 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
|
|
|
543 is in effect, in which case it is less.
|
|
|
544 If BUFFER is nil, the current buffer is assumed.
|
|
|
545 */ )
|
|
|
546 (buffer)
|
|
|
547 Lisp_Object buffer;
|
|
|
548 {
|
|
|
549 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
550 return (make_int (BUF_ZV (b)));
|
|
|
551 }
|
|
|
552
|
|
|
553 DEFUN ("point-max-marker", Fpoint_max_marker, Spoint_max_marker, 0, 1, 0 /*
|
|
|
554 Return a marker to the maximum permissible value of point BUFFER.
|
|
|
555 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)
|
|
|
556 is in effect, in which case it is less.
|
|
|
557 If BUFFER is nil, the current buffer is assumed.
|
|
|
558 */ )
|
|
|
559 (buffer)
|
|
|
560 Lisp_Object buffer;
|
|
|
561 {
|
|
|
562 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
563 return buildmark (BUF_ZV (b), make_buffer (b));
|
|
|
564 }
|
|
|
565
|
|
|
566 DEFUN ("following-char", Ffollowing_char, Sfollowing_char, 0, 1, 0 /*
|
|
|
567 Return the character following point, as a number.
|
|
|
568 At the end of the buffer or accessible region, return 0.
|
|
|
569 If BUFFER is nil, the current buffer is assumed.
|
|
|
570 */ )
|
|
|
571 (buffer)
|
|
|
572 Lisp_Object buffer;
|
|
|
573 {
|
|
|
574 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
575 if (BUF_PT (b) >= BUF_ZV (b))
|
|
|
576 return (Qzero); /* #### Gag me! */
|
|
|
577 else
|
|
|
578 return (make_char (BUF_FETCH_CHAR (b, BUF_PT (b))));
|
|
|
579 }
|
|
|
580
|
|
|
581 DEFUN ("preceding-char", Fpreceding_char, Spreceding_char, 0, 1, 0 /*
|
|
|
582 Return the character preceding point, as a number.
|
|
|
583 At the beginning of the buffer or accessible region, return 0.
|
|
|
584 If BUFFER is nil, the current buffer is assumed.
|
|
|
585 */ )
|
|
|
586 (buffer)
|
|
|
587 Lisp_Object buffer;
|
|
|
588 {
|
|
|
589 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
590 if (BUF_PT (b) <= BUF_BEGV (b))
|
|
|
591 return (Qzero); /* #### Gag me! */
|
|
|
592 else
|
|
|
593 return (make_char (BUF_FETCH_CHAR (b, BUF_PT (b) - 1)));
|
|
|
594 }
|
|
|
595
|
|
|
596 DEFUN ("bobp", Fbobp, Sbobp, 0, 1, 0 /*
|
|
|
597 Return T if point is at the beginning of the buffer.
|
|
|
598 If the buffer is narrowed, this means the beginning of the narrowed part.
|
|
|
599 If BUFFER is nil, the current buffer is assumed.
|
|
|
600 */ )
|
|
|
601 (buffer)
|
|
|
602 Lisp_Object buffer;
|
|
|
603 {
|
|
|
604 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
605 if (BUF_PT (b) == BUF_BEGV (b))
|
|
|
606 return Qt;
|
|
|
607 return Qnil;
|
|
|
608 }
|
|
|
609
|
|
|
610 DEFUN ("eobp", Feobp, Seobp, 0, 1, 0 /*
|
|
|
611 Return T if point is at the end of the buffer.
|
|
|
612 If the buffer is narrowed, this means the end of the narrowed part.
|
|
|
613 If BUFFER is nil, the current buffer is assumed.
|
|
|
614 */ )
|
|
|
615 (buffer)
|
|
|
616 Lisp_Object buffer;
|
|
|
617 {
|
|
|
618 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
619 if (BUF_PT (b) == BUF_ZV (b))
|
|
|
620 return Qt;
|
|
|
621 return Qnil;
|
|
|
622 }
|
|
|
623
|
|
|
624 int
|
|
|
625 beginning_of_line_p (struct buffer *b, Bufpos pt)
|
|
|
626 {
|
|
|
627 if (pt <= BUF_BEGV (b))
|
|
|
628 return 1;
|
|
|
629 return BUF_FETCH_CHAR (b, pt - 1) == '\n';
|
|
|
630 }
|
|
|
631
|
|
|
632
|
|
|
633 DEFUN ("bolp", Fbolp, Sbolp, 0, 1, 0 /*
|
|
|
634 Return T if point is at the beginning of a line.
|
|
|
635 If BUFFER is nil, the current buffer is assumed.
|
|
|
636 */ )
|
|
|
637 (buffer)
|
|
|
638 Lisp_Object buffer;
|
|
|
639 {
|
|
|
640 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
641
|
|
|
642 return beginning_of_line_p (b, BUF_PT (b)) ? Qt : Qnil;
|
|
|
643 }
|
|
|
644
|
|
|
645 DEFUN ("eolp", Feolp, Seolp, 0, 1, 0 /*
|
|
|
646 Return T if point is at the end of a line.
|
|
|
647 `End of a line' includes point being at the end of the buffer.
|
|
|
648 If BUFFER is nil, the current buffer is assumed.
|
|
|
649 */ )
|
|
|
650 (buffer)
|
|
|
651 Lisp_Object buffer;
|
|
|
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
|
|
|
659 DEFUN ("char-after", Fchar_after, Schar_after, 1, 2, 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.
|
|
|
664 */ )
|
|
|
665 (pos, buffer)
|
|
|
666 Lisp_Object pos, buffer;
|
|
|
667 {
|
|
|
668 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
669 Bufpos n = get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD);
|
|
|
670
|
|
|
671 if (n < 0 || n == BUF_ZV (b))
|
|
|
672 return Qnil;
|
|
|
673 return (make_char (BUF_FETCH_CHAR (b, n)));
|
|
|
674 }
|
|
|
675
|
|
|
676
|
|
|
677 DEFUN ("user-login-name", Fuser_login_name, Suser_login_name, 0, 1, 0 /*
|
|
|
678 Return the name under which the user logged in, as a string.
|
|
|
679 This is based on the effective uid, not the real uid.
|
|
|
680 Also, if the environment variable LOGNAME or USER is set,
|
|
|
681 that determines the value of this function.
|
|
|
682 If the optional argument UID is present, then environment variables are
|
|
|
683 ignored and this function returns the login name for that UID, or nil.
|
|
|
684 */ )
|
|
|
685 (uid)
|
|
|
686 Lisp_Object uid;
|
|
|
687 {
|
|
|
688 struct passwd *pw = NULL;
|
|
|
689
|
|
|
690 if (!NILP (uid))
|
|
|
691 {
|
|
|
692 CHECK_INT (uid);
|
|
|
693 pw = (struct passwd *) getpwuid (XINT (uid));
|
|
|
694 }
|
|
|
695 else
|
|
|
696 {
|
|
|
697 char *user_name;
|
|
|
698 /* #### - when euid != uid, then LOGNAME and USER are leftovers from the
|
|
|
699 old environment (I site observed behavior on sunos and linux), so the
|
|
|
700 environment variables should be disregarded in that case. --Stig */
|
|
|
701 user_name = getenv ("LOGNAME");
|
|
|
702 if (!user_name)
|
|
|
703 #ifdef WINDOWSNT
|
|
|
704 user_name = (char *) getenv ("USERNAME"); /* it's USERNAME on NT */
|
|
|
705 #else /* WINDOWSNT */
|
|
|
706 user_name = (char *) getenv ("USER");
|
|
|
707 #endif /* WINDOWSNT */
|
|
|
708 if (user_name)
|
|
|
709 return (build_string (user_name));
|
|
|
710 else
|
|
|
711 pw = (struct passwd *) getpwuid (geteuid ());
|
|
|
712 }
|
|
|
713 /* #### - I believe this should return nil instead of "unknown" when pw==0 */
|
|
|
714 return (pw ? build_string (pw->pw_name) : Qnil);
|
|
|
715 }
|
|
|
716
|
|
|
717 DEFUN ("user-real-login-name", Fuser_real_login_name, Suser_real_login_name,
|
|
|
718 0, 0, 0 /*
|
|
|
719 Return the name of the user's real uid, as a string.
|
|
|
720 This ignores the environment variables LOGNAME and USER, so it differs from
|
|
|
721 `user-login-name' when running under `su'.
|
|
|
722 */ )
|
|
|
723 ()
|
|
|
724 {
|
|
|
725 struct passwd *pw = (struct passwd *) getpwuid (getuid ());
|
|
|
726 /* #### - I believe this should return nil instead of "unknown" when pw==0 */
|
|
|
727
|
|
|
728 #ifdef MSDOS
|
|
|
729 /* We let the real user name default to "root" because that's quite
|
|
|
730 accurate on MSDOG and because it lets Emacs find the init file.
|
|
|
731 (The DVX libraries override the Djgpp libraries here.) */
|
|
|
732 Lisp_Object tem = build_string (pw ? pw->pw_name : "root");/* no gettext */
|
|
|
733 #else
|
|
|
734 Lisp_Object tem = build_string (pw ? pw->pw_name : "unknown");/* no gettext */
|
|
|
735 #endif
|
|
|
736 return (tem);
|
|
|
737 }
|
|
|
738
|
|
|
739 DEFUN ("user-uid", Fuser_uid, Suser_uid, 0, 0, 0 /*
|
|
|
740 Return the effective uid of Emacs, as an integer.
|
|
|
741 */ )
|
|
|
742 ()
|
|
|
743 {
|
|
|
744 return make_int (geteuid ());
|
|
|
745 }
|
|
|
746
|
|
|
747 DEFUN ("user-real-uid", Fuser_real_uid, Suser_real_uid, 0, 0, 0 /*
|
|
|
748 Return the real uid of Emacs, as an integer.
|
|
|
749 */ )
|
|
|
750 ()
|
|
|
751 {
|
|
|
752 return make_int (getuid ());
|
|
|
753 }
|
|
|
754
|
|
|
755 DEFUN ("user-full-name", Fuser_full_name, Suser_full_name, 0, 1, 0 /*
|
|
|
756 Return the full name of the user logged in, as a string.
|
|
|
757 If the optional argument USER is given, then the full name for that
|
|
|
758 user is returned, or nil. USER may be either a login name or a uid.
|
|
|
759 */ )
|
|
|
760 (user)
|
|
|
761 Lisp_Object user;
|
|
|
762 {
|
|
|
763 Lisp_Object uname = (STRINGP (user) ? user : Fuser_login_name (user));
|
|
|
764 struct passwd *pw = NULL;
|
|
|
765 Lisp_Object tem;
|
|
|
766 char *p, *q;
|
|
|
767
|
|
|
768 if (!NILP (uname)) /* nil when nonexistent UID passed as arg */
|
|
|
769 {
|
|
|
770 CONST char *uname_ext;
|
|
|
771
|
|
|
772 /* Fuck me. getpwnam() can call select() and (under IRIX at least)
|
|
|
773 things get wedged if a SIGIO arrives during this time. */
|
|
|
774 GET_C_STRING_OS_DATA_ALLOCA (uname, uname_ext);
|
|
|
775 slow_down_interrupts ();
|
|
|
776 pw = (struct passwd *) getpwnam (uname_ext);
|
|
|
777 speed_up_interrupts ();
|
|
|
778 }
|
|
|
779
|
|
|
780 /* #### - Stig sez: this should return nil instead of "unknown" when pw==0 */
|
|
|
781 /* Ben sez: bad idea because it's likely to break something */
|
|
|
782 #ifndef AMPERSAND_FULL_NAME
|
|
|
783 p = (char *) ((pw) ? USER_FULL_NAME : "unknown"); /* don't gettext */
|
|
|
784 q = (char *) strchr ((char *) p, ',');
|
|
|
785 #else
|
|
|
786 p = (char *) ((pw) ? USER_FULL_NAME : "unknown"); /* don't gettext */
|
|
|
787 q = (char *) strchr ((char *) p, ',');
|
|
|
788 #endif
|
|
|
789 tem = ((!NILP (user) && !pw)
|
|
|
790 ? Qnil
|
|
|
791 : make_ext_string ((unsigned char *) p, (q ? q - p : strlen (p)),
|
|
|
792 FORMAT_OS));
|
|
|
793
|
|
|
794 #ifdef AMPERSAND_FULL_NAME
|
|
|
795 if (!NILP (tem))
|
|
|
796 {
|
|
|
797 p = (char *) string_data (XSTRING (tem));
|
|
|
798 q = strchr (p, '&');
|
|
|
799 /* Substitute the login name for the &, upcasing the first character. */
|
|
|
800 if (q)
|
|
|
801 {
|
|
|
802 char *r = (char *) alloca (strlen (p) +
|
|
|
803 string_length (XSTRING (uname)) + 1);
|
|
|
804 memcpy (r, p, q - p);
|
|
|
805 r[q - p] = 0;
|
|
|
806 strcat (r, (char *) string_data (XSTRING (uname)));
|
|
|
807 /* #### current_buffer dependency! */
|
|
|
808 r[q - p] = UPCASE (current_buffer, r[q - p]);
|
|
|
809 strcat (r, q + 1);
|
|
|
810 tem = build_string (r);
|
|
|
811 }
|
|
|
812 }
|
|
|
813 #endif /* AMPERSAND_FULL_NAME */
|
|
|
814
|
|
|
815 p = getenv ("NAME");
|
|
|
816 if (p)
|
|
|
817 tem = build_string (p);
|
|
|
818 return (tem);
|
|
|
819 }
|
|
|
820
|
|
|
821 DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0 /*
|
|
|
822 Return the name of the machine you are running on, as a string.
|
|
|
823 */ )
|
|
|
824 ()
|
|
|
825 {
|
|
|
826 return (Fcopy_sequence (Vsystem_name));
|
|
|
827 }
|
|
|
828
|
|
|
829 /* For the benefit of callers who don't want to include lisp.h.
|
|
|
830 Caller must free! */
|
|
|
831 char *
|
|
|
832 get_system_name (void)
|
|
|
833 {
|
|
|
834 return xstrdup ((char *) string_data (XSTRING (Vsystem_name)));
|
|
|
835 }
|
|
|
836
|
|
|
837 DEFUN ("emacs-pid", Femacs_pid, Semacs_pid, 0, 0, 0 /*
|
|
|
838 Return the process ID of Emacs, as an integer.
|
|
|
839 */ )
|
|
|
840 ()
|
|
|
841 {
|
|
|
842 return make_int (getpid ());
|
|
|
843 }
|
|
|
844
|
|
|
845 DEFUN ("current-time", Fcurrent_time, Scurrent_time, 0, 0, 0 /*
|
|
|
846 Return the current time, as the number of seconds since 1970-01-01 00:00:00.
|
|
|
847 The time is returned as a list of three integers. The first has the
|
|
|
848 most significant 16 bits of the seconds, while the second has the
|
|
|
849 least significant 16 bits. The third integer gives the microsecond
|
|
|
850 count.
|
|
|
851
|
|
|
852 The microsecond count is zero on systems that do not provide
|
|
|
853 resolution finer than a second.
|
|
|
854 */ )
|
|
|
855 ()
|
|
|
856 {
|
|
|
857 EMACS_TIME t;
|
|
|
858 Lisp_Object result[3];
|
|
|
859
|
|
|
860 EMACS_GET_TIME (t);
|
|
|
861 XSETINT (result[0], (EMACS_SECS (t) >> 16) & 0xffff);
|
|
|
862 XSETINT (result[1], (EMACS_SECS (t) >> 0) & 0xffff);
|
|
|
863 XSETINT (result[2], EMACS_USECS (t));
|
|
|
864
|
|
|
865 return Flist (3, result);
|
|
|
866 }
|
|
|
867
|
|
|
868 DEFUN ("current-process-time", Fcurrent_process_time, Scurrent_process_time,
|
|
|
869 0, 0, 0 /*
|
|
|
870 Return the amount of time used by this XEmacs process so far.
|
|
|
871 The return value is a list of three floating-point numbers, expressing
|
|
|
872 the user, system, and real times used by the process. The user time
|
|
|
873 measures the time actually spent by the CPU executing the code in this
|
|
|
874 process. The system time measures time spent by the CPU executing kernel
|
|
|
875 code on behalf of this process (e.g. I/O requests made by the process).
|
|
|
876
|
|
|
877 Note that the user and system times measure processor time, as opposed
|
|
|
878 to real time, and only accrue when the processor is actually doing
|
|
|
879 something: Time spent in an idle wait (waiting for user events to come
|
|
|
880 in or for I/O on a disk drive or other device to complete) does not
|
|
|
881 count. Thus, the user and system times will often be considerably
|
|
|
882 less than the real time.
|
|
|
883
|
|
|
884 Some systems do not allow the user and system times to be distinguished.
|
|
|
885 In this case, the user time will be the total processor time used by
|
|
|
886 the process, and the system time will be 0.
|
|
|
887
|
|
|
888 Some systems do not allow the real and processor times to be distinguished.
|
|
|
889 In this case, the user and real times will be the same and the system
|
|
|
890 time will be 0.
|
|
|
891 */ )
|
|
|
892 ()
|
|
|
893 {
|
|
|
894 double user, sys, real;
|
|
|
895
|
|
|
896 get_process_times (&user, &sys, &real);
|
|
|
897 return list3 (make_float (user), make_float (sys), make_float (real));
|
|
|
898 }
|
|
|
899
|
|
|
900
|
|
|
901 int
|
|
|
902 lisp_to_time (Lisp_Object specified_time, time_t *result)
|
|
|
903 {
|
|
|
904 if (NILP (specified_time))
|
|
|
905 return time (result) != -1;
|
|
|
906 else
|
|
|
907 {
|
|
|
908 Lisp_Object high, low;
|
|
|
909 high = Fcar (specified_time);
|
|
|
910 CHECK_INT (high);
|
|
|
911 low = Fcdr (specified_time);
|
|
|
912 if (CONSP (low))
|
|
|
913 low = Fcar (low);
|
|
|
914 CHECK_INT (low);
|
|
|
915 *result = (XINT (high) << 16) + (XINT (low) & 0xffff);
|
|
|
916 return *result >> 16 == XINT (high);
|
|
|
917 }
|
|
|
918 }
|
|
|
919
|
|
|
920 Lisp_Object
|
|
|
921 time_to_lisp (time_t the_time)
|
|
|
922 {
|
|
|
923 unsigned int item = (unsigned int) the_time;
|
|
|
924 return Fcons (make_int (item >> 16), make_int (item & 0xffff));
|
|
|
925 }
|
|
|
926
|
|
|
927 size_t emacs_strftime (char *string, size_t max, CONST char *format,
|
|
|
928 CONST struct tm *tm);
|
|
|
929 static long difftm (CONST struct tm *a, CONST struct tm *b);
|
|
|
930
|
|
|
931
|
|
|
932 DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string,
|
|
|
933 2, 2, 0 /*
|
|
|
934 Use FORMAT-STRING to format the time TIME.
|
|
|
935 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from
|
|
|
936 `current-time' and `file-attributes'.
|
|
|
937 FORMAT-STRING may contain %-sequences to substitute parts of the time.
|
|
|
938 %a is replaced by the abbreviated name of the day of week.
|
|
|
939 %A is replaced by the full name of the day of week.
|
|
|
940 %b is replaced by the abbreviated name of the month.
|
|
|
941 %B is replaced by the full name of the month.
|
|
|
942 %c is a synonym for \"%x %X\".
|
|
|
943 %C is a locale-specific synonym, which defaults to \"%A, %B %e, %Y\" in the C locale.
|
|
|
944 %d is replaced by the day of month, zero-padded.
|
|
|
945 %D is a synonym for \"%m/%d/%y\".
|
|
|
946 %e is replaced by the day of month, blank-padded.
|
|
|
947 %h is a synonym for \"%b\".
|
|
|
948 %H is replaced by the hour (00-23).
|
|
|
949 %I is replaced by the hour (00-12).
|
|
|
950 %j is replaced by the day of the year (001-366).
|
|
|
951 %k is replaced by the hour (0-23), blank padded.
|
|
|
952 %l is replaced by the hour (1-12), blank padded.
|
|
|
953 %m is replaced by the month (01-12).
|
|
|
954 %M is replaced by the minute (00-59).
|
|
|
955 %n is a synonym for \"\\n\".
|
|
|
956 %p is replaced by AM or PM, as appropriate.
|
|
|
957 %r is a synonym for \"%I:%M:%S %p\".
|
|
|
958 %R is a synonym for \"%H:%M\".
|
|
|
959 %S is replaced by the second (00-60).
|
|
|
960 %t is a synonym for \"\\t\".
|
|
|
961 %T is a synonym for \"%H:%M:%S\".
|
|
|
962 %U is replaced by the week of the year (00-53), first day of week is Sunday.
|
|
|
963 %w is replaced by the day of week (0-6), Sunday is day 0.
|
|
|
964 %W is replaced by the week of the year (00-53), first day of week is Monday.
|
|
|
965 %x is a locale-specific synonym, which defaults to \"%D\" in the C locale.
|
|
|
966 %X is a locale-specific synonym, which defaults to \"%T\" in the C locale.
|
|
|
967 %y is replaced by the year without century (00-99).
|
|
|
968 %Y is replaced by the year with century.
|
|
|
969 %Z is replaced by the time zone abbreviation.
|
|
|
970
|
|
|
971 The number of options reflects the `strftime' function.
|
|
|
972
|
|
|
973 BUG: If the charset used by the current locale is not ISO 8859-1, the
|
|
|
974 characters appearing in the day and month names may be incorrect.
|
|
|
975 */ )
|
|
|
976 (format_string, _time)
|
|
|
977 Lisp_Object format_string, _time;
|
|
|
978 {
|
|
|
979 time_t value;
|
|
|
980 int size;
|
|
|
981
|
|
|
982 CHECK_STRING (format_string);
|
|
|
983
|
|
|
984 if (! lisp_to_time (_time, &value))
|
|
|
985 error ("Invalid time specification");
|
|
|
986
|
|
|
987 /* This is probably enough. */
|
|
|
988 size = string_length (XSTRING (format_string)) * 6 + 50;
|
|
|
989
|
|
|
990 while (1)
|
|
|
991 {
|
|
|
992 char *buf = (char *) alloca (size);
|
|
|
993 *buf = 1;
|
|
|
994 if (emacs_strftime (buf, size,
|
|
|
995 (CONST char *) string_data (XSTRING (format_string)),
|
|
|
996 localtime (&value))
|
|
|
997 || !*buf)
|
|
|
998 return build_ext_string (buf, FORMAT_BINARY);
|
|
|
999 /* If buffer was too small, make it bigger. */
|
|
|
1000 size *= 2;
|
|
|
1001 }
|
|
|
1002 }
|
|
|
1003
|
|
|
1004 DEFUN ("decode-time", Fdecode_time, Sdecode_time, 0, 1, 0 /*
|
|
|
1005 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).
|
|
|
1006 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)
|
|
|
1007 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'
|
|
|
1008 to use the current time. The list has the following nine members:
|
|
|
1009 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which
|
|
|
1010 only some operating systems support. MINUTE is an integer between 0 and 59.
|
|
|
1011 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.
|
|
|
1012 MONTH is an integer between 1 and 12. YEAR is an integer indicating the
|
|
|
1013 four-digit year. DOW is the day of week, an integer between 0 and 6, where
|
|
|
1014 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.
|
|
|
1015 ZONE is an integer indicating the number of seconds east of Greenwich.
|
|
|
1016 \(Note that Common Lisp has different meanings for DOW and ZONE.)
|
|
|
1017 */ )
|
|
|
1018 (specified_time)
|
|
|
1019 Lisp_Object specified_time;
|
|
|
1020 {
|
|
|
1021 time_t time_spec;
|
|
|
1022 struct tm save_tm;
|
|
|
1023 struct tm *decoded_time;
|
|
|
1024 Lisp_Object list_args[9];
|
|
|
1025
|
|
|
1026 if (! lisp_to_time (specified_time, &time_spec))
|
|
|
1027 error ("Invalid time specification");
|
|
|
1028
|
|
|
1029 decoded_time = localtime (&time_spec);
|
|
|
1030 XSETINT (list_args[0], decoded_time->tm_sec);
|
|
|
1031 XSETINT (list_args[1], decoded_time->tm_min);
|
|
|
1032 XSETINT (list_args[2], decoded_time->tm_hour);
|
|
|
1033 XSETINT (list_args[3], decoded_time->tm_mday);
|
|
|
1034 XSETINT (list_args[4], decoded_time->tm_mon + 1);
|
|
|
1035 XSETINT (list_args[5], decoded_time->tm_year + 1900);
|
|
|
1036 XSETINT (list_args[6], decoded_time->tm_wday);
|
|
|
1037 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil;
|
|
|
1038
|
|
|
1039 /* Make a copy, in case gmtime modifies the struct. */
|
|
|
1040 save_tm = *decoded_time;
|
|
|
1041 decoded_time = gmtime (&time_spec);
|
|
|
1042 if (decoded_time == 0)
|
|
|
1043 list_args[8] = Qnil;
|
|
|
1044 else
|
|
|
1045 XSETINT (list_args[8], difftm (&save_tm, decoded_time));
|
|
|
1046 return Flist (9, list_args);
|
|
|
1047 }
|
|
|
1048
|
|
|
1049 static void set_time_zone_rule (char *tzstring);
|
|
|
1050
|
|
|
1051 DEFUN ("encode-time", Fencode_time, Sencode_time, 6, MANY, 0 /*
|
|
|
1052 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.
|
|
|
1053 This is the reverse operation of `decode-time', which see.
|
|
|
1054 ZONE defaults to the current time zone rule. This can
|
|
|
1055 be a string (as from `set-time-zone-rule'), or it can be a list
|
|
|
1056 (as from `current-time-zone') or an integer (as from `decode-time')
|
|
|
1057 applied without consideration for daylight savings time.
|
|
|
1058
|
|
|
1059 You can pass more than 7 arguments; then the first six arguments
|
|
|
1060 are used as SECOND through YEAR, and the *last* argument is used as ZONE.
|
|
|
1061 The intervening arguments are ignored.
|
|
|
1062 This feature lets (apply 'encode-time (decode-time ...)) work.
|
|
|
1063
|
|
|
1064 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;
|
|
|
1065 for example, a DAY of 0 means the day preceding the given month.
|
|
|
1066 Year numbers less than 100 are treated just like other year numbers.
|
|
|
1067 If you want them to stand for years in this century, you must do that yourself
|
|
|
1068 */ )
|
|
|
1069 (nargs, args)
|
|
|
1070 int nargs;
|
|
|
1071 Lisp_Object *args;
|
|
|
1072 {
|
|
|
1073 time_t _time;
|
|
|
1074 struct tm tm;
|
|
|
1075 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil;
|
|
|
1076
|
|
|
1077 CHECK_INT (args[0]); /* second */
|
|
|
1078 CHECK_INT (args[1]); /* minute */
|
|
|
1079 CHECK_INT (args[2]); /* hour */
|
|
|
1080 CHECK_INT (args[3]); /* day */
|
|
|
1081 CHECK_INT (args[4]); /* month */
|
|
|
1082 CHECK_INT (args[5]); /* year */
|
|
|
1083
|
|
|
1084 tm.tm_sec = XINT (args[0]);
|
|
|
1085 tm.tm_min = XINT (args[1]);
|
|
|
1086 tm.tm_hour = XINT (args[2]);
|
|
|
1087 tm.tm_mday = XINT (args[3]);
|
|
|
1088 tm.tm_mon = XINT (args[4]) - 1;
|
|
|
1089 tm.tm_year = XINT (args[5]) - 1900;
|
|
|
1090 tm.tm_isdst = -1;
|
|
|
1091
|
|
|
1092 if (CONSP (zone))
|
|
|
1093 zone = Fcar (zone);
|
|
|
1094 if (NILP (zone))
|
|
|
1095 _time = mktime (&tm);
|
|
|
1096 else
|
|
|
1097 {
|
|
|
1098 char tzbuf[100];
|
|
|
1099 char *tzstring;
|
|
|
1100 char **oldenv = environ, **newenv;
|
|
|
1101
|
|
|
1102 if (STRINGP (zone))
|
|
|
1103 tzstring = (char *) string_data (XSTRING (zone));
|
|
|
1104 else if (INTP (zone))
|
|
|
1105 {
|
|
|
1106 int abszone = abs (XINT (zone));
|
|
|
1107 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0),
|
|
|
1108 abszone / (60*60), (abszone/60) % 60, abszone % 60);
|
|
|
1109 tzstring = tzbuf;
|
|
|
1110 }
|
|
|
1111 else
|
|
|
1112 error ("Invalid time zone specification");
|
|
|
1113
|
|
|
1114 /* Set TZ before calling mktime; merely adjusting mktime's returned
|
|
|
1115 value doesn't suffice, since that would mishandle leap seconds. */
|
|
|
1116 set_time_zone_rule (tzstring);
|
|
|
1117
|
|
|
1118 _time = mktime (&tm);
|
|
|
1119
|
|
|
1120 /* Restore TZ to previous value. */
|
|
|
1121 newenv = environ;
|
|
|
1122 environ = oldenv;
|
|
|
1123 free (newenv);
|
|
|
1124 #ifdef LOCALTIME_CACHE
|
|
|
1125 tzset ();
|
|
|
1126 #endif
|
|
|
1127 }
|
|
|
1128
|
|
|
1129 if (_time == (time_t) -1)
|
|
|
1130 error ("Specified time is not representable");
|
|
|
1131
|
|
|
1132 return wasteful_word_to_lisp (_time);
|
|
|
1133 }
|
|
|
1134
|
|
|
1135 DEFUN ("current-time-string", Fcurrent_time_string, Scurrent_time_string,
|
|
|
1136 0, 1, 0 /*
|
|
|
1137 Return the current time, as a human-readable string.
|
|
|
1138 Programs can use this function to decode a time,
|
|
|
1139 since the number of columns in each field is fixed.
|
|
|
1140 The format is `Sun Sep 16 01:03:52 1973'.
|
|
|
1141 If an argument is given, it specifies a time to format
|
|
|
1142 instead of the current time. The argument should have the form:
|
|
|
1143 (HIGH . LOW)
|
|
|
1144 or the form:
|
|
|
1145 (HIGH LOW . IGNORED).
|
|
|
1146 Thus, you can use times obtained from `current-time'
|
|
|
1147 and from `file-attributes'.
|
|
|
1148 */ )
|
|
|
1149 (specified_time)
|
|
|
1150 Lisp_Object specified_time;
|
|
|
1151 {
|
|
|
1152 time_t value;
|
|
|
1153 char buf[30];
|
|
|
1154 char *tem;
|
|
|
1155
|
|
|
1156 if (! lisp_to_time (specified_time, &value))
|
|
|
1157 value = -1;
|
|
|
1158 tem = (char *) ctime (&value);
|
|
|
1159
|
|
|
1160 strncpy (buf, tem, 24);
|
|
|
1161 buf[24] = 0;
|
|
|
1162
|
|
|
1163 return build_ext_string (buf, FORMAT_BINARY);
|
|
|
1164 }
|
|
|
1165
|
|
|
1166 #define TM_YEAR_ORIGIN 1900
|
|
|
1167
|
|
|
1168 /* Yield A - B, measured in seconds. */
|
|
|
1169 static long
|
|
|
1170 difftm (CONST struct tm *a, CONST struct tm *b)
|
|
|
1171 {
|
|
|
1172 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1);
|
|
|
1173 int by = b->tm_year + (TM_YEAR_ORIGIN - 1);
|
|
|
1174 /* Some compilers can't handle this as a single return statement. */
|
|
|
1175 long days = (
|
|
|
1176 /* difference in day of year */
|
|
|
1177 a->tm_yday - b->tm_yday
|
|
|
1178 /* + intervening leap days */
|
|
|
1179 + ((ay >> 2) - (by >> 2))
|
|
|
1180 - (ay/100 - by/100)
|
|
|
1181 + ((ay/100 >> 2) - (by/100 >> 2))
|
|
|
1182 /* + difference in years * 365 */
|
|
|
1183 + (long)(ay-by) * 365
|
|
|
1184 );
|
|
|
1185 return (60*(60*(24*days + (a->tm_hour - b->tm_hour))
|
|
|
1186 + (a->tm_min - b->tm_min))
|
|
|
1187 + (a->tm_sec - b->tm_sec));
|
|
|
1188 }
|
|
|
1189
|
|
|
1190 DEFUN ("current-time-zone", Fcurrent_time_zone, Scurrent_time_zone, 0, 1, 0 /*
|
|
|
1191 Return the offset and name for the local time zone.
|
|
|
1192 This returns a list of the form (OFFSET NAME).
|
|
|
1193 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).
|
|
|
1194 A negative value means west of Greenwich.
|
|
|
1195 NAME is a string giving the name of the time zone.
|
|
|
1196 If an argument is given, it specifies when the time zone offset is determined
|
|
|
1197 instead of using the current time. The argument should have the form:
|
|
|
1198 (HIGH . LOW)
|
|
|
1199 or the form:
|
|
|
1200 (HIGH LOW . IGNORED).
|
|
|
1201 Thus, you can use times obtained from `current-time'
|
|
|
1202 and from `file-attributes'.
|
|
|
1203
|
|
|
1204 Some operating systems cannot provide all this information to Emacs;
|
|
|
1205 in this case, `current-time-zone' returns a list containing nil for
|
|
|
1206 the data it can't find.
|
|
|
1207 */ )
|
|
|
1208 (specified_time)
|
|
|
1209 Lisp_Object specified_time;
|
|
|
1210 {
|
|
|
1211 time_t value;
|
|
|
1212 struct tm *t;
|
|
|
1213
|
|
|
1214 if (lisp_to_time (specified_time, &value)
|
|
|
1215 && (t = gmtime (&value)) != 0)
|
|
|
1216 {
|
|
|
1217 struct tm gmt;
|
|
|
1218 long offset;
|
|
|
1219 char *s, buf[6];
|
|
|
1220
|
|
|
1221 gmt = *t; /* Make a copy, in case localtime modifies *t. */
|
|
|
1222 t = localtime (&value);
|
|
|
1223 offset = difftm (t, &gmt);
|
|
|
1224 s = 0;
|
|
|
1225 #ifdef HAVE_TM_ZONE
|
|
|
1226 if (t->tm_zone)
|
|
|
1227 s = (char *)t->tm_zone;
|
|
|
1228 #else /* not HAVE_TM_ZONE */
|
|
|
1229 #ifdef HAVE_TZNAME
|
|
|
1230 if (t->tm_isdst == 0 || t->tm_isdst == 1)
|
|
|
1231 s = tzname[t->tm_isdst];
|
|
|
1232 #endif
|
|
|
1233 #endif /* not HAVE_TM_ZONE */
|
|
|
1234 if (!s)
|
|
|
1235 {
|
|
|
1236 /* No local time zone name is available; use "+-NNNN" instead. */
|
|
|
1237 int am = (offset < 0 ? -offset : offset) / 60;
|
|
|
1238 sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60);
|
|
|
1239 s = buf;
|
|
|
1240 }
|
|
|
1241 return list2 (make_int (offset), build_string (s));
|
|
|
1242 }
|
|
|
1243 else
|
|
|
1244 return list2 (Qnil, Qnil);
|
|
|
1245 }
|
|
|
1246
|
|
|
1247 /* Set the local time zone rule to TZSTRING.
|
|
|
1248 This allocates memory into `environ', which it is the caller's
|
|
|
1249 responsibility to free. */
|
|
|
1250 static void
|
|
|
1251 set_time_zone_rule (char *tzstring)
|
|
|
1252 {
|
|
|
1253 int envptrs;
|
|
|
1254 char **from, **to, **newenv;
|
|
|
1255
|
|
|
1256 for (from = environ; *from; from++)
|
|
|
1257 continue;
|
|
|
1258 envptrs = from - environ + 2;
|
|
|
1259 newenv = to = (char **) xmalloc (envptrs * sizeof (char *)
|
|
|
1260 + (tzstring ? strlen (tzstring) + 4 : 0));
|
|
|
1261 if (tzstring)
|
|
|
1262 {
|
|
|
1263 char *t = (char *) (to + envptrs);
|
|
|
1264 strcpy (t, "TZ=");
|
|
|
1265 strcat (t, tzstring);
|
|
|
1266 *to++ = t;
|
|
|
1267 }
|
|
|
1268
|
|
|
1269 for (from = environ; *from; from++)
|
|
|
1270 if (strncmp (*from, "TZ=", 3) != 0)
|
|
|
1271 *to++ = *from;
|
|
|
1272 *to = 0;
|
|
|
1273
|
|
|
1274 environ = newenv;
|
|
|
1275
|
|
|
1276 #ifdef LOCALTIME_CACHE
|
|
|
1277 tzset ();
|
|
|
1278 #endif
|
|
|
1279 }
|
|
|
1280
|
|
|
1281 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, Sset_time_zone_rule,
|
|
|
1282 1, 1, 0 /*
|
|
|
1283 Set the local time zone using TZ, a string specifying a time zone rule.
|
|
|
1284 If TZ is nil, use implementation-defined default time zone information.
|
|
|
1285 */ )
|
|
|
1286 (tz)
|
|
|
1287 Lisp_Object tz;
|
|
|
1288 {
|
|
|
1289 char *tzstring;
|
|
|
1290
|
|
|
1291 if (NILP (tz))
|
|
|
1292 tzstring = 0;
|
|
|
1293 else
|
|
|
1294 {
|
|
|
1295 CHECK_STRING (tz);
|
|
|
1296 tzstring = (char *) string_data (XSTRING (tz));
|
|
|
1297 }
|
|
|
1298
|
|
|
1299 set_time_zone_rule (tzstring);
|
|
|
1300 if (environbuf)
|
|
|
1301 xfree (environbuf);
|
|
|
1302 environbuf = environ;
|
|
|
1303
|
|
|
1304 return Qnil;
|
|
|
1305 }
|
|
|
1306
|
|
|
1307
|
|
|
1308 void
|
|
|
1309 buffer_insert1 (struct buffer *buf, Lisp_Object arg)
|
|
|
1310 {
|
|
|
1311 /* This function can GC */
|
|
|
1312 struct gcpro gcpro1;
|
|
|
1313 GCPRO1 (arg);
|
|
|
1314 retry:
|
|
|
1315 if (CHAR_OR_CHAR_INTP (arg))
|
|
|
1316 {
|
|
|
1317 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg));
|
|
|
1318 }
|
|
|
1319 else if (STRINGP (arg))
|
|
|
1320 {
|
|
|
1321 buffer_insert_lisp_string (buf, arg);
|
|
|
1322 }
|
|
|
1323 else
|
|
|
1324 {
|
|
|
1325 arg = wrong_type_argument (Qchar_or_string_p, arg);
|
|
|
1326 goto retry;
|
|
|
1327 }
|
|
|
1328 zmacs_region_stays = 0;
|
|
|
1329 UNGCPRO;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332
|
|
|
1333 /* Callers passing one argument to Finsert need not gcpro the
|
|
|
1334 argument "array", since the only element of the array will
|
|
|
1335 not be used after calling insert_emacs_char or insert_lisp_string,
|
|
|
1336 so we don't care if it gets trashed. */
|
|
|
1337
|
|
|
1338 DEFUN ("insert", Finsert, Sinsert, 0, MANY, 0 /*
|
|
|
1339 Insert the arguments, either strings or characters, at point.
|
|
|
1340 Point moves forward so that it ends up after the inserted text.
|
|
|
1341 Any other markers at the point of insertion remain before the text.
|
|
|
1342 If a string has non-null string-extent-data, new extents will be created.
|
|
|
1343 */ )
|
|
|
1344 (nargs, args)
|
|
|
1345 int nargs;
|
|
|
1346 Lisp_Object *args;
|
|
|
1347 {
|
|
|
1348 /* This function can GC */
|
|
|
1349 REGISTER int argnum;
|
|
|
1350
|
|
|
1351 for (argnum = 0; argnum < nargs; argnum++)
|
|
|
1352 {
|
|
|
1353 buffer_insert1 (current_buffer, args[argnum]);
|
|
|
1354 }
|
|
|
1355
|
|
|
1356 return Qnil;
|
|
|
1357 }
|
|
|
1358
|
|
|
1359 DEFUN ("insert-before-markers", Finsert_before_markers, Sinsert_before_markers, 0, MANY, 0 /*
|
|
|
1360 Insert strings or characters at point, relocating markers after the text.
|
|
|
1361 Point moves forward so that it ends up after the inserted text.
|
|
|
1362 Any other markers at the point of insertion also end up after the text.
|
|
|
1363 */ )
|
|
|
1364 (nargs, args)
|
|
|
1365 int nargs;
|
|
|
1366 Lisp_Object *args;
|
|
|
1367 {
|
|
|
1368 /* This function can GC */
|
|
|
1369 REGISTER int argnum;
|
|
|
1370 REGISTER Lisp_Object tem;
|
|
|
1371
|
|
|
1372 for (argnum = 0; argnum < nargs; argnum++)
|
|
|
1373 {
|
|
|
1374 tem = args[argnum];
|
|
|
1375 retry:
|
|
|
1376 if (CHAR_OR_CHAR_INTP (tem))
|
|
|
1377 {
|
|
|
1378 buffer_insert_emacs_char_1 (current_buffer, -1,
|
|
|
1379 XCHAR_OR_CHAR_INT (tem),
|
|
|
1380 INSDEL_BEFORE_MARKERS);
|
|
|
1381 }
|
|
|
1382 else if (STRINGP (tem))
|
|
|
1383 {
|
|
|
1384 buffer_insert_lisp_string_1 (current_buffer, -1, tem,
|
|
|
1385 INSDEL_BEFORE_MARKERS);
|
|
|
1386 }
|
|
|
1387 else
|
|
|
1388 {
|
|
|
1389 tem = wrong_type_argument (Qchar_or_string_p, tem);
|
|
|
1390 goto retry;
|
|
|
1391 }
|
|
|
1392 }
|
|
|
1393 zmacs_region_stays = 0;
|
|
|
1394 return Qnil;
|
|
|
1395 }
|
|
|
1396
|
|
|
1397 DEFUN ("insert-string", Finsert_string, Sinsert_string, 1, 2, 0 /*
|
|
|
1398 Insert STRING into BUFFER at BUFFER's point.
|
|
|
1399 Point moves forward so that it ends up after the inserted text.
|
|
|
1400 Any other markers at the point of insertion remain before the text.
|
|
|
1401 If a string has non-null string-extent-data, new extents will be created.
|
|
|
1402 BUFFER defaults to the current buffer.
|
|
|
1403 */ )
|
|
|
1404 (string, buffer)
|
|
|
1405 Lisp_Object string, buffer;
|
|
|
1406 {
|
|
|
1407 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1408 CHECK_STRING (string);
|
|
|
1409 buffer_insert_lisp_string (buf, string);
|
|
|
1410 zmacs_region_stays = 0;
|
|
|
1411 return Qnil;
|
|
|
1412 }
|
|
|
1413
|
|
|
1414 /* Third argument in FSF is INHERIT:
|
|
|
1415
|
|
|
1416 "The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
|
|
|
1417 from adjoining text, if those properties are sticky."
|
|
|
1418
|
|
|
1419 Jamie thinks this is bogus. */
|
|
|
1420
|
|
|
1421
|
|
|
1422 DEFUN ("insert-char", Finsert_char, Sinsert_char, 1, 4, 0 /*
|
|
|
1423 Insert COUNT (second arg) copies of CHR (first arg).
|
|
|
1424 Point and all markers are affected as in the function `insert'.
|
|
|
1425 COUNT defaults to 1 if omitted.
|
|
|
1426 The optional third arg IGNORED is INHERIT under FSF Emacs.
|
|
|
1427 This is highly bogus, however, and XEmacs always behaves as if
|
|
|
1428 `t' were passed to INHERIT.
|
|
|
1429 The optional fourth arg BUFFER specifies the buffer to insert the
|
|
|
1430 text into. If BUFFER is nil, the current buffer is assumed.
|
|
|
1431 */ )
|
|
|
1432 (chr, count, ignored, buffer)
|
|
|
1433 Lisp_Object chr, count, ignored, buffer;
|
|
|
1434 {
|
|
|
1435 /* This function can GC */
|
|
|
1436 REGISTER Bufbyte *string;
|
|
|
1437 REGISTER int slen;
|
|
|
1438 REGISTER int i, j;
|
|
|
1439 REGISTER Bytecount n;
|
|
|
1440 REGISTER Bytecount charlen;
|
|
|
1441 Bufbyte str[MAX_EMCHAR_LEN];
|
|
|
1442 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1443 int cou;
|
|
|
1444
|
|
|
1445 CHECK_CHAR_COERCE_INT (chr);
|
|
|
1446 if (NILP (count))
|
|
|
1447 cou = 1;
|
|
|
1448 else
|
|
|
1449 {
|
|
|
1450 CHECK_INT (count);
|
|
|
1451 cou = XINT (count);
|
|
|
1452 }
|
|
|
1453
|
|
|
1454 charlen = set_charptr_emchar (str, XCHAR (chr));
|
|
|
1455 n = cou * charlen;
|
|
|
1456 if (n <= 0)
|
|
|
1457 return Qnil;
|
|
|
1458 slen = min (n, 768);
|
|
|
1459 string = (Bufbyte *) alloca (slen * sizeof (Bufbyte));
|
|
|
1460 /* Write as many copies of the character into the temp string as will fit. */
|
|
|
1461 for (i = 0; i + charlen <= slen; i += charlen)
|
|
|
1462 for (j = 0; j < charlen; j++)
|
|
|
1463 string[i + j] = str[j];
|
|
|
1464 slen = i;
|
|
|
1465 while (n >= slen)
|
|
|
1466 {
|
|
|
1467 buffer_insert_raw_string (buf, string, slen);
|
|
|
1468 n -= slen;
|
|
|
1469 }
|
|
|
1470 if (n > 0)
|
|
|
1471 #if 0 /* FSFmacs bogosity */
|
|
|
1472 {
|
|
|
1473 if (!NILP (inherit))
|
|
|
1474 insert_and_inherit (string, n);
|
|
|
1475 else
|
|
|
1476 insert (string, n);
|
|
|
1477 }
|
|
|
1478 #else
|
|
|
1479 buffer_insert_raw_string (buf, string, n);
|
|
|
1480 #endif
|
|
|
1481
|
|
|
1482 zmacs_region_stays = 0;
|
|
|
1483 return Qnil;
|
|
|
1484 }
|
|
|
1485
|
|
|
1486
|
|
|
1487 /* Making strings from buffer contents. */
|
|
|
1488
|
|
|
1489 DEFUN ("buffer-substring", Fbuffer_substring, Sbuffer_substring, 0, 3, 0 /*
|
|
|
1490 Return the contents of part of BUFFER as a string.
|
|
|
1491 The two arguments START and END are character positions;
|
|
|
1492 they can be in either order. If omitted, they default to the beginning
|
|
|
1493 and end of BUFFER, respectively.
|
|
|
1494 If there are duplicable extents in the region, the string remembers
|
|
|
1495 them in its extent data.
|
|
|
1496 If BUFFER is nil, the current buffer is assumed.
|
|
|
1497 */ )
|
|
|
1498 (start, end, buffer)
|
|
|
1499 Lisp_Object start, end, buffer;
|
|
|
1500 {
|
|
|
1501 /* This function can GC */
|
|
|
1502 Bufpos begv, zv;
|
|
|
1503 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1504
|
|
|
1505 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
|
|
|
1506 return make_string_from_buffer (b, begv, zv - begv);
|
|
|
1507 }
|
|
|
1508
|
|
|
1509 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, Sinsert_buffer_substring,
|
|
|
1510 1, 3, 0 /*
|
|
|
1511 Insert before point a substring of the contents of buffer BUFFER.
|
|
|
1512 BUFFER may be a buffer or a buffer name.
|
|
|
1513 Arguments START and END are character numbers specifying the substring.
|
|
|
1514 They default to the beginning and the end of BUFFER.
|
|
|
1515 */ )
|
|
|
1516 (buffer, start, end)
|
|
|
1517 Lisp_Object buffer, start, end;
|
|
|
1518 {
|
|
|
1519 /* This function can GC */
|
|
|
1520 Bufpos b, e;
|
|
|
1521 struct buffer *bp;
|
|
|
1522
|
|
|
1523 bp = XBUFFER (get_buffer (buffer, 1));
|
|
|
1524 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL);
|
|
|
1525
|
|
|
1526 if (b < e)
|
|
|
1527 buffer_insert_from_buffer (current_buffer, bp, b, e - b);
|
|
|
1528
|
|
|
1529 return Qnil;
|
|
|
1530 }
|
|
|
1531
|
|
|
1532 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, Scompare_buffer_substrings,
|
|
|
1533 6, 6, 0 /*
|
|
|
1534 Compare two substrings of two buffers; return result as number.
|
|
|
1535 the value is -N if first string is less after N-1 chars,
|
|
|
1536 +N if first string is greater after N-1 chars, or 0 if strings match.
|
|
|
1537 Each substring is represented as three arguments: BUFFER, START and END.
|
|
|
1538 That makes six args in all, three for each substring.
|
|
|
1539
|
|
|
1540 The value of `case-fold-search' in the current buffer
|
|
|
1541 determines whether case is significant or ignored.
|
|
|
1542 */ )
|
|
|
1543 (buffer1, start1, end1, buffer2, start2, end2)
|
|
|
1544 Lisp_Object buffer1, start1, end1, buffer2, start2, end2;
|
|
|
1545 {
|
|
|
1546 Bufpos begp1, endp1, begp2, endp2;
|
|
|
1547 REGISTER Charcount len1, len2, length, i;
|
|
|
1548 struct buffer *bp1, *bp2;
|
|
|
1549 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ?
|
|
|
1550 current_buffer->case_canon_table : Qnil);
|
|
|
1551
|
|
|
1552 /* Find the first buffer and its substring. */
|
|
|
1553
|
|
|
1554 bp1 = decode_buffer (buffer1, 1);
|
|
|
1555 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL);
|
|
|
1556
|
|
|
1557 /* Likewise for second substring. */
|
|
|
1558
|
|
|
1559 bp2 = decode_buffer (buffer2, 1);
|
|
|
1560 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL);
|
|
|
1561
|
|
|
1562 len1 = endp1 - begp1;
|
|
|
1563 len2 = endp2 - begp2;
|
|
|
1564 length = len1;
|
|
|
1565 if (len2 < length)
|
|
|
1566 length = len2;
|
|
|
1567
|
|
|
1568 for (i = 0; i < length; i++)
|
|
|
1569 {
|
|
|
1570 Emchar c1 = BUF_FETCH_CHAR (bp1, begp1 + i);
|
|
|
1571 Emchar c2 = BUF_FETCH_CHAR (bp2, begp2 + i);
|
|
|
1572 if (!NILP (trt))
|
|
|
1573 {
|
|
|
1574 c1 = TRT_TABLE_OF (trt, c1);
|
|
|
1575 c2 = TRT_TABLE_OF (trt, c2);
|
|
|
1576 }
|
|
|
1577 if (c1 < c2)
|
|
|
1578 return make_int (- 1 - i);
|
|
|
1579 if (c1 > c2)
|
|
|
1580 return make_int (i + 1);
|
|
|
1581 }
|
|
|
1582
|
|
|
1583 /* The strings match as far as they go.
|
|
|
1584 If one is shorter, that one is less. */
|
|
|
1585 if (length < len1)
|
|
|
1586 return make_int (length + 1);
|
|
|
1587 else if (length < len2)
|
|
|
1588 return make_int (- length - 1);
|
|
|
1589
|
|
|
1590 /* Same length too => they are equal. */
|
|
|
1591 return Qzero;
|
|
|
1592 }
|
|
|
1593
|
|
|
1594
|
|
|
1595 static Lisp_Object
|
|
|
1596 subst_char_in_region_unwind (Lisp_Object arg)
|
|
|
1597 {
|
|
|
1598 XBUFFER (XCAR (arg))->undo_list = XCDR (arg);
|
|
|
1599 return Qnil;
|
|
|
1600 }
|
|
|
1601
|
|
|
1602 static Lisp_Object
|
|
|
1603 subst_char_in_region_unwind_1 (Lisp_Object arg)
|
|
|
1604 {
|
|
|
1605 XBUFFER (XCAR (arg))->filename = XCDR (arg);
|
|
|
1606 return Qnil;
|
|
|
1607 }
|
|
|
1608
|
|
|
1609 DEFUN ("subst-char-in-region", Fsubst_char_in_region,
|
|
|
1610 Ssubst_char_in_region, 4, 5, 0 /*
|
|
|
1611 From START to END, replace FROMCHAR with TOCHAR each time it occurs.
|
|
|
1612 If optional arg NOUNDO is non-nil, don't record this change for undo
|
|
|
1613 and don't mark the buffer as really changed.
|
|
|
1614 */ )
|
|
|
1615 (start, end, fromchar, tochar, noundo)
|
|
|
1616 Lisp_Object start, end, fromchar, tochar, noundo;
|
|
|
1617 {
|
|
|
1618 /* This function can GC */
|
|
|
1619 Bufpos pos, stop;
|
|
|
1620 Emchar fromc, toc;
|
|
|
1621 int mc_count;
|
|
|
1622 struct buffer *buf = current_buffer;
|
|
|
1623 int count = specpdl_depth ();
|
|
|
1624
|
|
|
1625 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
|
|
|
1626 CHECK_CHAR_COERCE_INT (fromchar);
|
|
|
1627 CHECK_CHAR_COERCE_INT (tochar);
|
|
|
1628
|
|
|
1629 fromc = XCHAR (fromchar);
|
|
|
1630 toc = XCHAR (tochar);
|
|
|
1631
|
|
|
1632 /* If we don't want undo, turn off putting stuff on the list.
|
|
|
1633 That's faster than getting rid of things,
|
|
|
1634 and it prevents even the entry for a first change.
|
|
|
1635 Also inhibit locking the file. */
|
|
|
1636 if (!NILP (noundo))
|
|
|
1637 {
|
|
|
1638 record_unwind_protect (subst_char_in_region_unwind,
|
|
|
1639 Fcons (Fcurrent_buffer (), buf->undo_list));
|
|
|
1640 buf->undo_list = Qt;
|
|
|
1641 /* Don't do file-locking. */
|
|
|
1642 record_unwind_protect (subst_char_in_region_unwind_1,
|
|
|
1643 Fcons (Fcurrent_buffer (), buf->filename));
|
|
|
1644 buf->filename = Qnil;
|
|
|
1645 }
|
|
|
1646
|
|
|
1647 mc_count = begin_multiple_change (buf, pos, stop);
|
|
|
1648 while (pos < stop)
|
|
|
1649 {
|
|
|
1650 if (BUF_FETCH_CHAR (buf, pos) == fromc)
|
|
|
1651 {
|
|
|
1652 /* There used to be some code here that set the buffer to
|
|
|
1653 unmodified if NOUNDO was specified and there was only
|
|
|
1654 one change to the buffer since it was last saved.
|
|
|
1655 This is a crock of shit, so I'm not duplicating this
|
|
|
1656 behavior. I think this was left over from when
|
|
|
1657 prepare_to_modify_buffer() actually bumped MODIFF,
|
|
|
1658 so that code was supposed to undo this change. --ben */
|
|
|
1659 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0);
|
|
|
1660
|
|
|
1661 /* If noundo is not nil then we don't mark the buffer as
|
|
|
1662 modified. In reality that needs to happen externally
|
|
|
1663 only. Internally redisplay needs to know that the actual
|
|
|
1664 contents it should be displaying have changed. */
|
|
|
1665 if (!NILP (noundo))
|
|
|
1666 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil);
|
|
|
1667 }
|
|
|
1668 pos++;
|
|
|
1669 }
|
|
|
1670 end_multiple_change (buf, mc_count);
|
|
|
1671
|
|
|
1672 unbind_to (count, Qnil);
|
|
|
1673 return Qnil;
|
|
|
1674 }
|
|
|
1675
|
|
|
1676 DEFUN ("translate-region", Ftranslate_region, Stranslate_region, 3, 3, 0 /*
|
|
|
1677 From START to END, translate characters according to TABLE.
|
|
|
1678 TABLE is a string; the Nth character in it is the mapping
|
|
|
1679 for the character with code N. Returns the number of characters changed.
|
|
|
1680 */ )
|
|
|
1681 (start, end, table)
|
|
|
1682 Lisp_Object start;
|
|
|
1683 Lisp_Object end;
|
|
|
1684 Lisp_Object table;
|
|
|
1685 {
|
|
|
1686 /* This function can GC */
|
|
|
1687 Bufpos pos, stop; /* Limits of the region. */
|
|
|
1688 REGISTER Emchar oc; /* Old character. */
|
|
|
1689 REGISTER Emchar nc; /* New character. */
|
|
|
1690 int cnt; /* Number of changes made. */
|
|
|
1691 Charcount size; /* Size of translate table. */
|
|
|
1692 int mc_count;
|
|
|
1693 struct buffer *buf = current_buffer;
|
|
|
1694
|
|
|
1695 get_buffer_range_char (buf, start, end, &pos, &stop, 0);
|
|
|
1696 CHECK_STRING (table);
|
|
|
1697
|
|
|
1698 size = string_char_length (XSTRING (table));
|
|
|
1699
|
|
|
1700 cnt = 0;
|
|
|
1701 mc_count = begin_multiple_change (buf, pos, stop);
|
|
|
1702 for (; pos < stop; pos++)
|
|
|
1703 {
|
|
|
1704 oc = BUF_FETCH_CHAR (buf, pos);
|
|
|
1705 if (oc >= 0 && oc < size)
|
|
|
1706 {
|
|
|
1707 nc = string_char (XSTRING (table), oc);
|
|
|
1708 if (nc != oc)
|
|
|
1709 {
|
|
|
1710 buffer_replace_char (buf, pos, nc, 0, 0);
|
|
|
1711 ++cnt;
|
|
|
1712 }
|
|
|
1713 }
|
|
|
1714 }
|
|
|
1715 end_multiple_change (buf, mc_count);
|
|
|
1716
|
|
|
1717 return make_int (cnt);
|
|
|
1718 }
|
|
|
1719
|
|
|
1720 DEFUN ("delete-region", Fdelete_region, Sdelete_region, 2, 3, "r" /*
|
|
|
1721 Delete the text between point and mark.
|
|
|
1722 When called from a program, expects two arguments,
|
|
|
1723 positions (integers or markers) specifying the stretch to be deleted.
|
|
|
1724 If BUFFER is nil, the current buffer is assumed.
|
|
|
1725 */ )
|
|
|
1726 (b, e, buffer)
|
|
|
1727 Lisp_Object b, e, buffer;
|
|
|
1728 {
|
|
|
1729 /* This function can GC */
|
|
|
1730 Bufpos start, end;
|
|
|
1731 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1732
|
|
|
1733 get_buffer_range_char (buf, b, e, &start, &end, 0);
|
|
|
1734 buffer_delete_range (buf, start, end, 0);
|
|
|
1735 zmacs_region_stays = 0;
|
|
|
1736 return Qnil;
|
|
|
1737 }
|
|
|
1738
|
|
|
1739 void
|
|
|
1740 widen_buffer (struct buffer *b, int no_clip)
|
|
|
1741 {
|
|
|
1742 if (BUF_BEGV (b) != BUF_BEG (b))
|
|
|
1743 {
|
|
|
1744 clip_changed = 1;
|
|
|
1745 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BI_BUF_BEG (b));
|
|
|
1746 }
|
|
|
1747 if (BUF_ZV (b) != BUF_Z (b))
|
|
|
1748 {
|
|
|
1749 clip_changed = 1;
|
|
|
1750 SET_BOTH_BUF_ZV (b, BUF_Z (b), BI_BUF_Z (b));
|
|
|
1751 }
|
|
|
1752 if (clip_changed)
|
|
|
1753 {
|
|
|
1754 if (!no_clip)
|
|
|
1755 MARK_CLIP_CHANGED;
|
|
|
1756 /* Changing the buffer bounds invalidates any recorded current
|
|
|
1757 column. */
|
|
|
1758 invalidate_current_column ();
|
|
|
1759 }
|
|
|
1760 }
|
|
|
1761
|
|
|
1762 DEFUN ("widen", Fwiden, Swiden, 0, 1, "" /*
|
|
|
1763 Remove restrictions (narrowing) from BUFFER.
|
|
|
1764 This allows the buffer's full text to be seen and edited.
|
|
|
1765 If BUFFER is nil, the current buffer is assumed.
|
|
|
1766 */ )
|
|
|
1767 (buffer)
|
|
|
1768 Lisp_Object buffer;
|
|
|
1769 {
|
|
|
1770 struct buffer *b = decode_buffer (buffer, 1);
|
|
|
1771 widen_buffer (b, 0);
|
|
|
1772 zmacs_region_stays = 0;
|
|
|
1773 return Qnil;
|
|
|
1774 }
|
|
|
1775
|
|
|
1776 DEFUN ("narrow-to-region", Fnarrow_to_region, Snarrow_to_region, 2, 3, "r" /*
|
|
|
1777 Restrict editing in BUFFER to the current region.
|
|
|
1778 The rest of the text becomes temporarily invisible and untouchable
|
|
|
1779 but is not deleted; if you save the buffer in a file, the invisible
|
|
|
1780 text is included in the file. \\[widen] makes all visible again.
|
|
|
1781 If BUFFER is nil, the current buffer is assumed.
|
|
|
1782 See also `save-restriction'.
|
|
|
1783
|
|
|
1784 When calling from a program, pass two arguments; positions (integers
|
|
|
1785 or markers) bounding the text that should remain visible.
|
|
|
1786 */ )
|
|
|
1787 (b, e, buffer)
|
|
|
1788 Lisp_Object b, e, buffer;
|
|
|
1789 {
|
|
|
1790 Bufpos start, end;
|
|
|
1791 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1792 Bytind bi_start, bi_end;
|
|
|
1793
|
|
|
1794 get_buffer_range_char (buf, b, e, &start, &end, GB_ALLOW_PAST_ACCESSIBLE);
|
|
|
1795 bi_start = bufpos_to_bytind (buf, start);
|
|
|
1796 bi_end = bufpos_to_bytind (buf, end);
|
|
|
1797
|
|
|
1798 SET_BOTH_BUF_BEGV (buf, start, bi_start);
|
|
|
1799 SET_BOTH_BUF_ZV (buf, end, bi_end);
|
|
|
1800 if (BUF_PT (buf) < start)
|
|
|
1801 BUF_SET_PT (buf, start);
|
|
|
1802 if (BUF_PT (buf) > end)
|
|
|
1803 BUF_SET_PT (buf, end);
|
|
|
1804 MARK_CLIP_CHANGED;
|
|
|
1805 /* Changing the buffer bounds invalidates any recorded current column. */
|
|
|
1806 invalidate_current_column ();
|
|
|
1807 zmacs_region_stays = 0;
|
|
|
1808 return Qnil;
|
|
|
1809 }
|
|
|
1810
|
|
|
1811 Lisp_Object
|
|
|
1812 save_restriction_save (void)
|
|
|
1813 {
|
|
|
1814 Lisp_Object bottom, top;
|
|
|
1815 /* Note: I tried using markers here, but it does not win
|
|
|
1816 because insertion at the end of the saved region
|
|
|
1817 does not advance mh and is considered "outside" the saved region. */
|
|
|
1818 bottom = make_int (BUF_BEGV (current_buffer) - BUF_BEG (current_buffer));
|
|
|
1819 top = make_int (BUF_Z (current_buffer) - BUF_ZV (current_buffer));
|
|
|
1820
|
|
|
1821 return noseeum_cons (Fcurrent_buffer (), noseeum_cons (bottom, top));
|
|
|
1822 }
|
|
|
1823
|
|
|
1824 Lisp_Object
|
|
|
1825 save_restriction_restore (Lisp_Object data)
|
|
|
1826 {
|
|
|
1827 struct buffer *buf;
|
|
|
1828 Charcount newhead, newtail;
|
|
|
1829 Lisp_Object tem;
|
|
|
1830 int local_clip_changed = 0;
|
|
|
1831
|
|
|
1832 buf = XBUFFER (Fcar (data));
|
|
|
1833 if (!BUFFER_LIVE_P (buf))
|
|
|
1834 /* someone could have killed the buffer in the meantime ... */
|
|
|
1835 return Qnil;
|
|
|
1836 tem = Fcdr (data);
|
|
|
1837 newhead = XINT (Fcar (tem));
|
|
|
1838 newtail = XINT (Fcdr (tem));
|
|
|
1839 while (CONSP (data))
|
|
|
1840 {
|
|
|
1841 struct Lisp_Cons *victim = XCONS (data);
|
|
|
1842 data = victim->cdr;
|
|
|
1843 free_cons (victim);
|
|
|
1844 }
|
|
|
1845
|
|
|
1846 if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf))
|
|
|
1847 {
|
|
|
1848 newhead = 0;
|
|
|
1849 newtail = 0;
|
|
|
1850 }
|
|
|
1851 {
|
|
|
1852 Bufpos start, end;
|
|
|
1853 Bytind bi_start, bi_end;
|
|
|
1854
|
|
|
1855 start = BUF_BEG (buf) + newhead;
|
|
|
1856 end = BUF_Z (buf) - newtail;
|
|
|
1857
|
|
|
1858 bi_start = bufpos_to_bytind (buf, start);
|
|
|
1859 bi_end = bufpos_to_bytind (buf, end);
|
|
|
1860
|
|
|
1861 if (BUF_BEGV (buf) != start)
|
|
|
1862 {
|
|
|
1863 local_clip_changed = 1;
|
|
|
1864 SET_BOTH_BUF_BEGV (buf, start, bi_start);
|
|
|
1865 }
|
|
|
1866 if (BUF_ZV (buf) != end)
|
|
|
1867 {
|
|
|
1868 local_clip_changed = 1;
|
|
|
1869 SET_BOTH_BUF_ZV (buf, end, bi_end);
|
|
|
1870 }
|
|
|
1871 }
|
|
|
1872 if (local_clip_changed)
|
|
|
1873 MARK_CLIP_CHANGED;
|
|
|
1874
|
|
|
1875 /* If point is outside the new visible range, move it inside. */
|
|
|
1876 BUF_SET_PT (buf,
|
|
|
1877 bufpos_clip_to_bounds (BUF_BEGV (buf),
|
|
|
1878 BUF_PT (buf),
|
|
|
1879 BUF_ZV (buf)));
|
|
|
1880
|
|
|
1881 return Qnil;
|
|
|
1882 }
|
|
|
1883
|
|
|
1884 DEFUN ("save-restriction", Fsave_restriction, Ssave_restriction, 0, UNEVALLED, 0 /*
|
|
|
1885 Execute BODY, saving and restoring current buffer's restrictions.
|
|
|
1886 The buffer's restrictions make parts of the beginning and end invisible.
|
|
|
1887 \(They are set up with `narrow-to-region' and eliminated with `widen'.)
|
|
|
1888 This special form, `save-restriction', saves the current buffer's restrictions
|
|
|
1889 when it is entered, and restores them when it is exited.
|
|
|
1890 So any `narrow-to-region' within BODY lasts only until the end of the form.
|
|
|
1891 The old restrictions settings are restored
|
|
|
1892 even in case of abnormal exit (throw or error).
|
|
|
1893
|
|
|
1894 The value returned is the value of the last form in BODY.
|
|
|
1895
|
|
|
1896 `save-restriction' can get confused if, within the BODY, you widen
|
|
|
1897 and then make changes outside the area within the saved restrictions.
|
|
|
1898
|
|
|
1899 Note: if you are using both `save-excursion' and `save-restriction',
|
|
|
1900 use `save-excursion' outermost:
|
|
|
1901 (save-excursion (save-restriction ...))
|
|
|
1902 */ )
|
|
|
1903 (body)
|
|
|
1904 Lisp_Object body;
|
|
|
1905 {
|
|
|
1906 /* This function can GC */
|
|
|
1907 int speccount = specpdl_depth ();
|
|
|
1908
|
|
|
1909 record_unwind_protect (save_restriction_restore, save_restriction_save ());
|
|
|
1910
|
|
|
1911 return unbind_to (speccount, Fprogn (body));
|
|
|
1912 }
|
|
|
1913
|
|
|
1914
|
|
|
1915 DEFUN ("format", Fformat, Sformat, 1, MANY, 0 /*
|
|
|
1916 Format a string out of a control-string and arguments.
|
|
|
1917 The first argument is a control string.
|
|
|
1918 The other arguments are substituted into it to make the result, a string.
|
|
|
1919 It may contain %-sequences meaning to substitute the next argument.
|
|
|
1920 %s means print all objects as-is, using `princ'.
|
|
|
1921 %S means print all objects as s-expressions, using `prin1'.
|
|
|
1922 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex,
|
|
|
1923 %X uppercase hex).
|
|
|
1924 %c means print as a single character.
|
|
|
1925 %f means print as a floating-point number in fixed notation (e.g. 785.200).
|
|
|
1926 %e or %E means print as a floating-point number in scientific notation
|
|
|
1927 (e.g. 7.85200e+03).
|
|
|
1928 %g or %G means print as a floating-point number in \"pretty format\";
|
|
|
1929 depending on the number, either %f or %e/%E format will be used, and
|
|
|
1930 trailing zeroes are removed from the fractional part.
|
|
|
1931 The argument used for all but %s and %S must be a number. It will be
|
|
|
1932 converted to an integer or a floating-point number as necessary.
|
|
|
1933
|
|
|
1934 %$ means reposition to read a specific numbered argument; for example,
|
|
|
1935 %3$s would apply the `%s' to the third argument after the control string,
|
|
|
1936 and the next format directive would use the fourth argument, the
|
|
|
1937 following one the fifth argument, etc. (There must be a positive integer
|
|
|
1938 between the % and the $).
|
|
|
1939 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be
|
|
|
1940 specified between the optional repositioning spec and the conversion
|
|
|
1941 character; see below.
|
|
|
1942 An optional minimum field width may be specified after any flag characters
|
|
|
1943 and before the conversion character; it specifies the minimum number of
|
|
|
1944 characters that the converted argument will take up. Padding will be
|
|
|
1945 added on the left (or on the right, if the `-' flag is specified), as
|
|
|
1946 necessary. Padding is done with spaces, or with zeroes if the `0' flag
|
|
|
1947 is specified.
|
|
|
1948 An optional period character and precision may be specified after any
|
|
|
1949 minimum field width. It specifies the minimum number of digits to
|
|
|
1950 appear in %d, %i, %o, %x, and %X conversions (the number is padded
|
|
|
1951 on the left with zeroes as necessary); the number of digits printed
|
|
|
1952 after the decimal point for %f, %e, and %E conversions; the number
|
|
|
1953 of significant digits printed in %g and %G conversions; and the
|
|
|
1954 maximum number of non-padding characters printed in %s and %S
|
|
|
1955 conversions. The default precision for floating-point conversions
|
|
|
1956 is six.
|
|
|
1957
|
|
|
1958 The ` ' and `+' flags mean prefix non-negative numbers with a space or
|
|
|
1959 plus sign, respectively.
|
|
|
1960 The `#' flag means print numbers in an alternate, more verbose format:
|
|
|
1961 octal numbers begin with zero; hex numbers begin with a 0x or 0X;
|
|
|
1962 a decimal point is printed in %f, %e, and %E conversions even if no
|
|
|
1963 numbers are printed after it; and trailing zeroes are not omitted in
|
|
|
1964 %g and %G conversions.
|
|
|
1965
|
|
|
1966 Use %% to put a single % into the output.
|
|
|
1967 */ )
|
|
|
1968 (nargs, args)
|
|
|
1969 int nargs;
|
|
|
1970 Lisp_Object *args;
|
|
|
1971 {
|
|
|
1972 /* It should not be necessary to GCPRO ARGS, because
|
|
|
1973 the caller in the interpreter should take care of that. */
|
|
|
1974
|
|
|
1975 CHECK_STRING (args[0]);
|
|
|
1976 return emacs_doprnt_string_lisp (0, args[0], 0, nargs - 1, args + 1);
|
|
|
1977 }
|
|
|
1978
|
|
|
1979
|
|
|
1980 DEFUN ("char-equal", Fchar_equal, Schar_equal, 2, 3, 0 /*
|
|
|
1981 Return t if two characters match, optionally ignoring case.
|
|
|
1982 Both arguments must be characters (i.e. integers).
|
|
|
1983 Case is ignored if `case-fold-search' is non-nil in BUFFER.
|
|
|
1984 If BUFFER is nil, the current buffer is assumed.
|
|
|
1985 */ )
|
|
|
1986 (c1, c2, buffer)
|
|
|
1987 Lisp_Object c1, c2, buffer;
|
|
|
1988 {
|
|
|
1989 Emchar x1, x2;
|
|
|
1990 struct buffer *buf = decode_buffer (buffer, 1);
|
|
|
1991
|
|
|
1992 CHECK_CHAR_COERCE_INT (c1);
|
|
|
1993 CHECK_CHAR_COERCE_INT (c2);
|
|
|
1994 x1 = XCHAR (c1);
|
|
|
1995 x2 = XCHAR (c2);
|
|
|
1996
|
|
|
1997 if (!NILP (buf->case_fold_search)
|
|
|
1998 ? DOWNCASE (buf, x1) == DOWNCASE (buf, x2)
|
|
|
1999 : x1 == x2)
|
|
|
2000 return Qt;
|
|
|
2001 return Qnil;
|
|
|
2002 }
|
|
|
2003
|
|
|
2004 #if 0 /* Undebugged FSFmacs code */
|
|
|
2005 /* Transpose the markers in two regions of the current buffer, and
|
|
|
2006 adjust the ones between them if necessary (i.e.: if the regions
|
|
|
2007 differ in size).
|
|
|
2008
|
|
|
2009 Traverses the entire marker list of the buffer to do so, adding an
|
|
|
2010 appropriate amount to some, subtracting from some, and leaving the
|
|
|
2011 rest untouched. Most of this is copied from adjust_markers in insdel.c.
|
|
|
2012
|
|
|
2013 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */
|
|
|
2014
|
|
|
2015 void
|
|
|
2016 transpose_markers (Bufpos start1, Bufpos end1, Bufpos start2, Bufpos end2)
|
|
|
2017 {
|
|
|
2018 Charcount amt1, amt2, diff;
|
|
|
2019 Bufpos mpos;
|
|
|
2020 Lisp_Object marker;
|
|
|
2021 struct buffer *buf = current_buffer;
|
|
|
2022
|
|
|
2023 /* Update point as if it were a marker. */
|
|
|
2024 if (BUF_PT (buf) < start1)
|
|
|
2025 ;
|
|
|
2026 else if (BUF_PT (buf) < end1)
|
|
|
2027 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1));
|
|
|
2028 else if (BUF_PT (buf) < start2)
|
|
|
2029 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1));
|
|
|
2030 else if (BUF_PT (buf) < end2)
|
|
|
2031 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1));
|
|
|
2032
|
|
|
2033 /* We used to adjust the endpoints here to account for the gap, but that
|
|
|
2034 isn't good enough. Even if we assume the caller has tried to move the
|
|
|
2035 gap out of our way, it might still be at start1 exactly, for example;
|
|
|
2036 and that places it `inside' the interval, for our purposes. The amount
|
|
|
2037 of adjustment is nontrivial if there's a `denormalized' marker whose
|
|
|
2038 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
|
|
|
2039 the dirty work to Fmarker_position, below. */
|
|
|
2040
|
|
|
2041 /* The difference between the region's lengths */
|
|
|
2042 diff = (end2 - start2) - (end1 - start1);
|
|
|
2043
|
|
|
2044 /* For shifting each marker in a region by the length of the other
|
|
|
2045 * region plus the distance between the regions.
|
|
|
2046 */
|
|
|
2047 amt1 = (end2 - start2) + (start2 - end1);
|
|
|
2048 amt2 = (end1 - start1) + (start2 - end1);
|
|
|
2049
|
|
|
2050 for (marker = BUF_MARKERS (buf); !NILP (marker);
|
|
|
2051 marker = XMARKER (marker)->chain)
|
|
|
2052 {
|
|
|
2053 mpos = marker_position (marker);
|
|
|
2054 if (mpos >= start1 && mpos < end2)
|
|
|
2055 {
|
|
|
2056 if (mpos < end1)
|
|
|
2057 mpos += amt1;
|
|
|
2058 else if (mpos < start2)
|
|
|
2059 mpos += diff;
|
|
|
2060 else
|
|
|
2061 mpos -= amt2;
|
|
|
2062 set_marker_position (marker, mpos);
|
|
|
2063 }
|
|
|
2064 }
|
|
|
2065 }
|
|
|
2066
|
|
|
2067 #endif
|
|
|
2068
|
|
|
2069 DEFUN ("transpose-regions", Ftranspose_regions, Stranspose_regions, 4, 5, 0 /*
|
|
|
2070 Transpose region START1 to END1 with START2 to END2.
|
|
|
2071 The regions may not be overlapping, because the size of the buffer is
|
|
|
2072 never changed in a transposition.
|
|
|
2073
|
|
|
2074 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose
|
|
|
2075 any markers that happen to be located in the regions. (#### BUG: currently
|
|
|
2076 this function always acts as if LEAVE_MARKERS is non-nil.)
|
|
|
2077
|
|
|
2078 Transposing beyond buffer boundaries is an error.
|
|
|
2079 */ )
|
|
|
2080 (startr1, endr1, startr2, endr2, leave_markers)
|
|
|
2081 Lisp_Object startr1, endr1, startr2, endr2, leave_markers;
|
|
|
2082 {
|
|
|
2083 Bufpos start1, end1, start2, end2;
|
|
|
2084 Charcount len1, len2;
|
|
|
2085 Lisp_Object string1, string2;
|
|
|
2086 struct buffer *buf = current_buffer;
|
|
|
2087
|
|
|
2088 get_buffer_range_char (buf, startr1, endr1, &start1, &end1, 0);
|
|
|
2089 get_buffer_range_char (buf, startr2, endr2, &start2, &end2, 0);
|
|
|
2090
|
|
|
2091 len1 = end1 - start1;
|
|
|
2092 len2 = end2 - start2;
|
|
|
2093
|
|
|
2094 if (start2 < end1)
|
|
|
2095 error ("transposed regions not properly ordered");
|
|
|
2096 else if (start1 == end1 || start2 == end2)
|
|
|
2097 error ("transposed region may not be of length 0");
|
|
|
2098
|
|
|
2099 string1 = make_string_from_buffer (buf, start1, len1);
|
|
|
2100 string2 = make_string_from_buffer (buf, start2, len2);
|
|
|
2101 buffer_delete_range (buf, start2, end2, 0);
|
|
|
2102 buffer_insert_lisp_string_1 (buf, start2, string1, 0);
|
|
|
2103 buffer_delete_range (buf, start1, end1, 0);
|
|
|
2104 buffer_insert_lisp_string_1 (buf, start1, string2, 0);
|
|
|
2105
|
|
|
2106 /* In FSFmacs there is a whole bunch of really ugly code here
|
|
|
2107 to attempt to transpose the regions without using up any
|
|
|
2108 extra memory. Although the intent may be good, the result
|
|
|
2109 was highly bogus. */
|
|
|
2110
|
|
|
2111 return Qnil;
|
|
|
2112 }
|
|
|
2113
|
|
|
2114
|
|
|
2115 /************************************************************************/
|
|
|
2116 /* initialization */
|
|
|
2117 /************************************************************************/
|
|
|
2118
|
|
|
2119 void
|
|
|
2120 syms_of_editfns (void)
|
|
|
2121 {
|
|
|
2122 defsymbol (&Qpoint, "point");
|
|
|
2123 defsymbol (&Qmark, "mark");
|
|
|
2124 defsymbol (&Qregion_beginning, "region-beginning");
|
|
|
2125 defsymbol (&Qregion_end, "region-end");
|
|
|
2126 defsymbol (&Qformat, "format");
|
|
|
2127
|
|
|
2128 defsubr (&Schar_equal);
|
|
|
2129 defsubr (&Sgoto_char);
|
|
|
2130 defsubr (&Sstring_to_char);
|
|
|
2131 defsubr (&Schar_to_string);
|
|
|
2132 defsubr (&Sbuffer_substring);
|
|
|
2133
|
|
|
2134 defsubr (&Spoint_marker);
|
|
|
2135 defsubr (&Smark_marker);
|
|
|
2136 defsubr (&Spoint);
|
|
|
2137 defsubr (&Sregion_beginning);
|
|
|
2138 defsubr (&Sregion_end);
|
|
|
2139 defsubr (&Ssave_excursion);
|
|
|
2140
|
|
|
2141 defsubr (&Sbufsize);
|
|
|
2142 defsubr (&Spoint_max);
|
|
|
2143 defsubr (&Spoint_min);
|
|
|
2144 defsubr (&Spoint_min_marker);
|
|
|
2145 defsubr (&Spoint_max_marker);
|
|
|
2146
|
|
|
2147 defsubr (&Sbobp);
|
|
|
2148 defsubr (&Seobp);
|
|
|
2149 defsubr (&Sbolp);
|
|
|
2150 defsubr (&Seolp);
|
|
|
2151 defsubr (&Sfollowing_char);
|
|
|
2152 defsubr (&Spreceding_char);
|
|
|
2153 defsubr (&Schar_after);
|
|
|
2154 defsubr (&Sinsert);
|
|
|
2155 defsubr (&Sinsert_string);
|
|
|
2156 defsubr (&Sinsert_before_markers);
|
|
|
2157 defsubr (&Sinsert_char);
|
|
|
2158
|
|
|
2159 defsubr (&Suser_login_name);
|
|
|
2160 defsubr (&Suser_real_login_name);
|
|
|
2161 defsubr (&Suser_uid);
|
|
|
2162 defsubr (&Suser_real_uid);
|
|
|
2163 defsubr (&Suser_full_name);
|
|
|
2164 defsubr (&Semacs_pid);
|
|
|
2165 defsubr (&Scurrent_time);
|
|
|
2166 defsubr (&Scurrent_process_time);
|
|
|
2167 defsubr (&Sformat_time_string);
|
|
|
2168 defsubr (&Sdecode_time);
|
|
|
2169 defsubr (&Sencode_time);
|
|
|
2170 defsubr (&Scurrent_time_string);
|
|
|
2171 defsubr (&Scurrent_time_zone);
|
|
|
2172 defsubr (&Sset_time_zone_rule);
|
|
|
2173 defsubr (&Ssystem_name);
|
|
|
2174 defsubr (&Sformat);
|
|
|
2175
|
|
|
2176 defsubr (&Sinsert_buffer_substring);
|
|
|
2177 defsubr (&Scompare_buffer_substrings);
|
|
|
2178 defsubr (&Ssubst_char_in_region);
|
|
|
2179 defsubr (&Stranslate_region);
|
|
|
2180 defsubr (&Sdelete_region);
|
|
|
2181 defsubr (&Swiden);
|
|
|
2182 defsubr (&Snarrow_to_region);
|
|
|
2183 defsubr (&Ssave_restriction);
|
|
|
2184 defsubr (&Stranspose_regions);
|
|
|
2185
|
|
|
2186 defsymbol (&Qzmacs_update_region, "zmacs-update-region");
|
|
|
2187 defsymbol (&Qzmacs_deactivate_region, "zmacs-deactivate-region");
|
|
|
2188 defsymbol (&Qzmacs_region_buffer, "zmacs-region-buffer");
|
|
|
2189 }
|
|
|
2190
|
|
|
2191 void
|
|
|
2192 vars_of_editfns (void)
|
|
|
2193 {
|
|
|
2194 staticpro (&Vsystem_name);
|
|
|
2195 #if 0
|
|
|
2196 staticpro (&Vuser_full_name);
|
|
|
2197 staticpro (&Vuser_name);
|
|
|
2198 staticpro (&Vuser_real_name);
|
|
|
2199 #endif
|
|
|
2200 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /*
|
|
|
2201 *Whether LISPM-style active regions should be used.
|
|
|
2202 This means that commands which operate on the region (the area between the
|
|
|
2203 point and the mark) will only work while the region is in the ``active''
|
|
|
2204 state, which is indicated by highlighting. Executing most commands causes
|
|
|
2205 the region to not be in the active state, so (for example) \\[kill-region] will only
|
|
|
2206 work immediately after activating the region.
|
|
|
2207
|
|
|
2208 More specifically:
|
|
|
2209
|
|
|
2210 - Commands which operate on the region only work if the region is active.
|
|
|
2211 - Only a very small set of commands cause the region to become active:
|
|
|
2212 Those commands whose semantics are to mark an area, like mark-defun.
|
|
|
2213 - The region is deactivated after each command that is executed, except that:
|
|
|
2214 - \"Motion\" commands do not change whether the region is active or not.
|
|
|
2215
|
|
|
2216 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the
|
|
|
2217 cursor with normal motion commands (C-n, C-p, etc) will cause the region
|
|
|
2218 between point and the recently-pushed mark to be highlighted. It will
|
|
|
2219 remain highlighted until some non-motion comand is executed.
|
|
|
2220
|
|
|
2221 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a
|
|
|
2222 region and execute a command that operates on it, you can reactivate the
|
|
|
2223 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it
|
|
|
2224 again.
|
|
|
2225
|
|
|
2226 Generally, commands which push marks as a means of navigation (like
|
|
|
2227 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the
|
|
|
2228 region. But commands which push marks as a means of marking an area of
|
|
|
2229 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer]))
|
|
|
2230 do activate the region.
|
|
|
2231
|
|
|
2232 The way the command loop actually works with regard to deactivating the
|
|
|
2233 region is as follows:
|
|
|
2234
|
|
|
2235 - If the variable `zmacs-region-stays' has been set to t during the command
|
|
|
2236 just executed, the region is left alone (this is how the motion commands
|
|
|
2237 make the region stay around; see the `_' flag in the `interactive'
|
|
|
2238 specification). `zmacs-region-stays' is reset to nil before each command
|
|
|
2239 is executed.
|
|
|
2240 - If the function `zmacs-activate-region' has been called during the command
|
|
|
2241 just executed, the region is left alone. Very few functions should
|
|
|
2242 actually call this function.
|
|
|
2243 - Otherwise, if the region is active, the region is deactivated and
|
|
|
2244 the `zmacs-deactivate-region-hook' is called.
|
|
|
2245 */ );
|
|
|
2246 /* Zmacs style active regions are now ON by default */
|
|
|
2247 zmacs_regions = 1;
|
|
|
2248
|
|
|
2249 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /*
|
|
|
2250 Do not alter this. It is for internal use only.
|
|
|
2251 */ );
|
|
|
2252 zmacs_region_active_p = 0;
|
|
|
2253
|
|
|
2254 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /*
|
|
|
2255 Commands which do not wish to affect whether the region is currently
|
|
|
2256 highlighted should set this to t. Normally, the region is turned off after
|
|
|
2257 executing each command that did not explicitly turn it on with the function
|
|
|
2258 zmacs-activate-region. Setting this to true lets a command be non-intrusive.
|
|
|
2259 See the variable `zmacs-regions'.
|
|
|
2260 */ );
|
|
|
2261 zmacs_region_stays = 0;
|
|
|
2262
|
|
|
2263 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /*
|
|
|
2264 Do not use this -- it will be going away soon.
|
|
|
2265 Indicates if `goto-char' has just been run. This information is allegedly
|
|
|
2266 needed to get the desired behavior for atomic extents and unfortunately
|
|
|
2267 is not available by any other means.
|
|
|
2268 */ );
|
|
|
2269 atomic_extent_goto_char_p = 0;
|
|
|
2270 }
|
