Mercurial > hg
annotate mcabber/src/utils.c @ 844:5002948c7360
"/say_to ." is not valid
author | Mikael Berthe <mikael@lilotux.net> |
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date | Sat, 06 May 2006 18:41:24 +0200 |
parents | a6628f0aabc1 |
children | fe57dd753a56 |
rev | line source |
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241 | 1 /* |
2 * utils.c -- Various utility functions | |
393 | 3 * |
699 | 4 * Copyright (C) 2005, 2006 Mikael Berthe <bmikael@lists.lilotux.net> |
241 | 5 * ut_* functions are derived from Cabber debug/log code. |
6 * from_iso8601() comes from the Gaim project. | |
7 * | |
8 * This program is free software; you can redistribute it and/or modify | |
9 * it under the terms of the GNU General Public License as published by | |
10 * the Free Software Foundation; either version 2 of the License, or (at | |
11 * your option) any later version. | |
12 * | |
13 * This program is distributed in the hope that it will be useful, but | |
14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 * General Public License for more details. | |
17 * | |
18 * You should have received a copy of the GNU General Public License | |
19 * along with this program; if not, write to the Free Software | |
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
21 * USA | |
22 */ | |
23 | |
24 | 24 #include <stdio.h> |
25 #include <stdlib.h> | |
77 | 26 #include <string.h> |
24 | 27 #include <stdarg.h> |
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28 |
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29 /* For Cygwin (thanks go to Yitzchak Scott-Thoennes) */ |
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30 #ifdef __CYGWIN__ |
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31 # define timezonevar |
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32 extern long timezone; |
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33 #endif |
24 | 34 #include <time.h> |
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35 #include <unistd.h> |
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36 #include <sys/types.h> |
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37 #include <sys/stat.h> |
452 | 38 #include <ctype.h> |
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39 #include <glib.h> |
24 | 40 |
241 | 41 #include <config.h> |
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42 #include "logprint.h" |
241 | 43 |
76 | 44 static int DebugEnabled; |
77 | 45 static char *FName; |
24 | 46 |
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47 void ut_InitDebug(unsigned int level, const char *filename) |
24 | 48 { |
77 | 49 FILE *fp; |
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50 struct stat buf; |
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51 int err; |
77 | 52 |
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53 if (level < 1) { |
138 | 54 DebugEnabled = 0; |
55 FName = NULL; | |
56 return; | |
57 } | |
58 | |
59 if (filename) | |
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60 FName = g_strdup(filename); |
77 | 61 else { |
138 | 62 FName = getenv("HOME"); |
63 if (!FName) | |
64 FName = "/tmp/mcabberlog"; | |
65 else { | |
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66 char *tmpname = g_new(char, strlen(FName) + 12); |
138 | 67 strcpy(tmpname, FName); |
68 strcat(tmpname, "/mcabberlog"); | |
69 FName = tmpname; | |
70 } | |
77 | 71 } |
24 | 72 |
73 DebugEnabled = level; | |
76 | 74 |
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75 fp = fopen(FName, "a"); |
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76 if (!fp) { |
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77 fprintf(stderr, "ERROR: Cannot open tracelog file\n"); |
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78 return; |
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79 } |
428
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80 |
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81 err = fstat(fileno(fp), &buf); |
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82 if (err || buf.st_uid != geteuid()) { |
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83 fclose(fp); |
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84 DebugEnabled = 0; |
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85 FName = NULL; |
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86 if (err) { |
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87 fprintf(stderr, "ERROR: cannot stat the tracelog file!\n"); |
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88 } else { |
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89 fprintf(stderr, "ERROR: tracelog file does not belong to you!\n"); |
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90 } |
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91 return; |
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92 } |
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93 fchmod(fileno(fp), S_IRUSR|S_IWUSR); |
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94 |
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95 fprintf(fp, "New trace log started.\n" |
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96 "----------------------\n"); |
24 | 97 fclose(fp); |
98 } | |
99 | |
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100 void ut_WriteLog(unsigned int flag, const char *data) |
24 | 101 { |
374
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102 if (!DebugEnabled || !FName) return; |
393 | 103 |
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104 if (((DebugEnabled == 2) && (flag & (LPRINT_LOG|LPRINT_DEBUG))) || |
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105 ((DebugEnabled == 1) && (flag & LPRINT_LOG))) { |
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106 FILE *fp = fopen(FName, "a+"); |
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107 if (!fp) { |
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108 scr_LogPrint(LPRINT_NORMAL, "ERROR: Cannot open tracelog file"); |
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109 return; |
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110 } |
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111 fputs(data, fp); |
24 | 112 fclose(fp); |
113 } | |
114 } | |
115 | |
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116 // checkset_perm(name, setmode) |
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117 // Check the permissions of the "name" file/dir |
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118 // If setmode is true, correct the permissions if they are wrong |
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119 // Return values: -1 == bad file/dir, 0 == success, 1 == cannot correct |
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120 int checkset_perm(const char *name, unsigned int setmode) |
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121 { |
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122 int fd; |
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123 struct stat buf; |
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124 |
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125 #ifdef __CYGWIN__ |
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126 // Permission checking isn't efficent on Cygwin |
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127 return 0; |
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128 #endif |
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129 |
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130 fd = lstat(name, &buf); |
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131 if (fd == -1) return -1; |
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132 |
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133 if (buf.st_uid != geteuid()) { |
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134 scr_LogPrint(LPRINT_LOGNORM, "Wrong file owner [%s]", name); |
362
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135 return 1; |
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136 } |
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137 |
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138 if (buf.st_mode & (S_IRGRP | S_IWGRP | S_IXGRP) || |
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139 buf.st_mode & (S_IROTH | S_IWOTH | S_IXOTH)) { |
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140 if (setmode) { |
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141 mode_t newmode = 0; |
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142 scr_LogPrint(LPRINT_LOGNORM, "Bad permissions [%s]", name); |
362
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143 if (S_ISDIR(buf.st_mode)) |
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144 newmode |= S_IXUSR; |
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145 newmode |= S_IRUSR | S_IWUSR; |
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146 if (chmod(name, newmode)) { |
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147 scr_LogPrint(LPRINT_LOGNORM, "WARNING: Failed to correct permissions!"); |
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148 return 1; |
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149 } |
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150 scr_LogPrint(LPRINT_LOGNORM, "Permissions have been corrected"); |
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151 } else { |
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152 scr_LogPrint(LPRINT_LOGNORM, "WARNING: Bad permissions [%s]", name); |
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153 return 1; |
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154 } |
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155 } |
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156 |
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157 return 0; |
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158 } |
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159 |
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160 const char *ut_get_tmpdir(void) |
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161 { |
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162 static const char *tmpdir; |
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163 const char *tmpvars[] = { "MCABBERTMPDIR", "TMP", "TMPDIR", "TEMP" }; |
735 | 164 unsigned int i; |
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165 |
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166 if (tmpdir) |
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167 return tmpdir; |
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168 |
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169 for (i = 0; i < (sizeof(tmpvars) / sizeof(const char *)); i++) { |
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170 tmpdir = getenv(tmpvars[i]); |
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171 if (tmpdir && tmpdir[0] && tmpdir[0] == '/' && tmpdir[1]) { |
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172 // Looks ok. |
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173 return tmpdir; |
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174 } |
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175 } |
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176 |
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177 // Default temporary directory |
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178 tmpdir = "/tmp"; |
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179 return tmpdir; |
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180 } |
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181 |
241 | 182 // to_iso8601(dststr, timestamp) |
183 // Convert timestamp to iso8601 format, and store it in dststr. | |
184 // NOTE: dststr should be at last 19 chars long. | |
185 // Return should be 0 | |
186 int to_iso8601(char *dststr, time_t timestamp) | |
187 { | |
188 struct tm *tm_time; | |
189 int ret; | |
190 | |
191 tm_time = gmtime(×tamp); | |
192 | |
193 ret = snprintf(dststr, 19, "%.4d%02d%02dT%02d:%02d:%02dZ", | |
194 1900+tm_time->tm_year, tm_time->tm_mon+1, tm_time->tm_mday, | |
195 tm_time->tm_hour, tm_time->tm_min, tm_time->tm_sec); | |
196 | |
197 return ((ret == -1) ? -1 : 0); | |
198 } | |
199 | |
200 // from_iso8601(timestamp, utc) | |
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201 // This function came from the Gaim project, gaim_str_to_time(). |
241 | 202 // (Actually date may not be pure iso-8601) |
203 // Thanks, guys! | |
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204 // ** Modified by somian 10 Apr 2006 with advice from ysth. |
241 | 205 time_t from_iso8601(const char *timestamp, int utc) |
206 { | |
207 struct tm t; | |
208 time_t retval = 0; | |
209 char buf[32]; | |
210 char *c; | |
211 int tzoff = 0; | |
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212 int hms_succ = 0; |
241 | 213 |
214 time(&retval); | |
215 localtime_r(&retval, &t); | |
216 | |
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217 /* Reset time to midnight (00:00:00) */ |
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218 t.tm_hour = t.tm_min = t.tm_sec = 0; |
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219 |
241 | 220 snprintf(buf, sizeof(buf), "%s", timestamp); |
221 c = buf; | |
222 | |
223 /* 4 digit year */ | |
224 if (!sscanf(c, "%04d", &t.tm_year)) return 0; | |
225 c+=4; | |
226 if (*c == '-') | |
227 c++; | |
228 | |
229 t.tm_year -= 1900; | |
230 | |
231 /* 2 digit month */ | |
232 if (!sscanf(c, "%02d", &t.tm_mon)) return 0; | |
233 c+=2; | |
234 if (*c == '-') | |
235 c++; | |
236 | |
237 t.tm_mon -= 1; | |
238 | |
239 /* 2 digit day */ | |
240 if (!sscanf(c, "%02d", &t.tm_mday)) return 0; | |
241 c+=2; | |
242 if (*c == 'T' || *c == '.') { /* we have more than a date, keep going */ | |
243 c++; /* skip the "T" */ | |
244 | |
245 /* 2 digit hour */ | |
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246 if (sscanf(c, "%02d:%02d:%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3) |
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247 { |
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248 hms_succ = 1; |
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249 c += 8; |
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250 } |
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251 else if (sscanf(c, "%02d%02d%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3) |
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252 { |
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253 hms_succ = 1; |
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254 c += 6; |
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255 } |
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256 |
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257 if (hms_succ) { |
241 | 258 int tzhrs, tzmins; |
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259 |
241 | 260 if (*c == '.') /* dealing with precision we don't care about */ |
261 c += 4; | |
262 | |
263 if ((*c == '+' || *c == '-') && | |
264 sscanf(c+1, "%02d:%02d", &tzhrs, &tzmins)) { | |
265 tzoff = tzhrs*60*60 + tzmins*60; | |
266 if (*c == '+') | |
267 tzoff *= -1; | |
268 } | |
269 | |
270 if (tzoff || utc) { | |
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271 #ifdef HAVE_TM_GMTOFF |
241 | 272 tzoff += t.tm_gmtoff; |
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273 #else |
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274 # ifdef HAVE_TIMEZONE |
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275 tzset(); /* making sure */ |
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276 tzoff -= timezone; |
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277 # endif |
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278 #endif |
241 | 279 } |
280 } | |
281 } | |
282 | |
283 t.tm_isdst = -1; | |
284 | |
285 retval = mktime(&t); | |
286 | |
287 retval += tzoff; | |
288 | |
289 return retval; | |
290 } | |
419 | 291 |
292 // Should only be used for delays < 1s | |
293 inline void safe_usleep(unsigned int usec) | |
294 { | |
295 struct timespec req; | |
296 req.tv_sec = 0; | |
297 req.tv_nsec = (long)usec * 1000L; | |
298 nanosleep(&req, NULL); | |
299 } | |
452 | 300 |
301 /** | |
302 * Derived from libjabber/jid.c, because the libjabber version is not | |
303 * really convenient for our usage. | |
304 * | |
305 * Check if the full JID is valid | |
306 * Return 0 if it is valid, non zero otherwise | |
307 */ | |
308 int check_jid_syntax(char *jid) | |
309 { | |
310 char *str; | |
311 char *domain, *resource; | |
312 int domlen; | |
313 | |
314 if (!jid) return 1; | |
315 | |
316 domain = strchr(jid, '@'); | |
317 | |
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318 /* the username is optional */ |
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319 if (!domain) { |
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320 domain = jid; |
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321 } else { |
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322 /* node identifiers may not be longer than 1023 bytes */ |
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323 if ((domain == jid) || (domain-jid > 1023)) |
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324 return 1; |
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325 domain++; |
452 | 326 |
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327 /* check for low and invalid ascii characters in the username */ |
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328 for (str = jid; *str != '@'; str++) { |
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329 if (*str <= 32 || *str == ':' || *str == '@' || |
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330 *str == '<' || *str == '>' || *str == '\'' || |
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331 *str == '"' || *str == '&') { |
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332 return 1; |
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333 } |
452 | 334 } |
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335 /* the username is okay as far as we can tell without LIBIDN */ |
452 | 336 } |
337 | |
338 resource = strchr(domain, '/'); | |
339 | |
340 /* the resource is optional */ | |
341 if (resource) { | |
342 domlen = resource - domain; | |
343 resource++; | |
344 /* resources may not be longer than 1023 bytes */ | |
345 if ((*resource == '\0') || strlen(resource) > 1023) | |
346 return 1; | |
347 } else { | |
348 domlen = strlen(domain); | |
349 } | |
350 | |
351 /* there must be a domain identifier */ | |
352 if (domlen == 0) return 1; | |
353 | |
354 /* and it must not be longer than 1023 bytes */ | |
355 if (domlen > 1023) return 1; | |
356 | |
357 /* make sure the hostname is valid characters */ | |
358 for (str = domain; *str != '\0' && *str != '/'; str++) { | |
359 if (!(isalnum(*str) || *str == '.' || *str == '-' || *str == '_')) | |
360 return 1; | |
361 } | |
362 | |
363 /* it's okay as far as we can tell without LIBIDN */ | |
364 return 0; | |
365 } | |
366 | |
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367 |
452 | 368 void mc_strtolower(char *str) |
369 { | |
370 if (!str) return; | |
371 for ( ; *str; str++) | |
372 *str = tolower(*str); | |
373 } | |
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374 |
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375 // strip_arg_special_chars(string) |
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376 // Remove quotes and backslashes before an escaped quote |
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377 // Only quotes need a backslash |
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378 // Ex.: ["a b"] -> [a b]; [a\"b] -> [a"b] |
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379 void strip_arg_special_chars(char *s) |
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380 { |
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381 int instring = FALSE; |
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382 int escape = FALSE; |
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383 char *p; |
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384 |
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385 for (p = s; *p; p++) { |
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386 if (*p == '"') { |
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387 if (!escape) { |
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388 instring = !instring; |
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389 strcpy(p, p+1); |
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390 p--; |
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391 } else { |
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392 escape = FALSE; |
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393 } |
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394 } else if (*p == '\\') { |
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395 if (!escape) { |
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396 if (*(p+1) == '"') { |
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397 strcpy(p, p+1); |
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398 p--; |
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399 } |
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400 escape = TRUE; |
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401 } else { |
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402 escape = FALSE; |
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403 } |
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404 } |
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405 } |
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406 } |
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407 |
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408 // split_arg(arg, n, preservelast) |
551
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409 // Split the string arg into a maximum of n pieces, taking care of |
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410 // double quotes. |
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411 // Return a null-terminated array of strings. This array should be freed |
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412 // be the caller after use, for example with free_arg_lst(). |
559
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413 // If dontstriplast is true, the Nth argument isn't stripped (i.e. no |
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414 // processing of quote chars) |
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415 char **split_arg(const char *arg, unsigned int n, int dontstriplast) |
551
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416 { |
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417 char **arglst; |
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418 const char *p, *start, *end; |
735 | 419 unsigned int i = 0; |
551
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420 int instring = FALSE; |
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421 int escape = FALSE; |
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422 |
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423 arglst = g_new0(char*, n+1); |
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424 |
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425 if (!arg || !n) return arglst; |
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|
426 |
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427 // Skip leading space |
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428 for (start = arg; *start && *start == ' '; start++) ; |
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429 // End of string pointer |
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430 for (end = start; *end; end++) ; |
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431 // Skip trailing space |
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432 while (end > start+1 && *(end-1) == ' ') |
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433 end--; |
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|
434 |
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435 for (p = start; p < end; p++) { |
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436 if (*p == '"' && !escape) |
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437 instring = !instring; |
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438 if (*p == '\\' && !escape) |
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439 escape = TRUE; |
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440 else if (escape) |
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441 escape = FALSE; |
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442 if (*p == ' ' && !instring && i+1 < n) { |
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443 // end of parameter |
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444 *(arglst+i) = g_strndup(start, p-start); |
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445 strip_arg_special_chars(*(arglst+i)); |
556 | 446 for (start = p+1; *start && *start == ' '; start++) ; |
551
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447 i++; |
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448 } |
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449 } |
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450 |
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451 if (start < end) { |
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452 *(arglst+i) = g_strndup(start, end-start); |
559
4eb579399613
Fix a small bug in split_arg()
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556
diff
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453 if (!dontstriplast || i+1 < n) |
554
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454 strip_arg_special_chars(*(arglst+i)); |
551
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455 } |
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|
456 |
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457 return arglst; |
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|
458 } |
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|
459 |
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|
460 // free_arg_lst(arglst) |
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461 // Free an array allocated by split_arg() |
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462 void free_arg_lst(char **arglst) |
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463 { |
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|
464 char **arg_elt; |
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|
465 |
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466 for (arg_elt = arglst; *arg_elt; arg_elt++) |
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|
467 g_free(*arg_elt); |
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|
468 g_free(arglst); |
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|
469 } |
576 | 470 |
655
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
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diff
changeset
|
471 // replace_nl_with_dots(bufstr) |
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Use "(...)" when cutting a multi-line status message in the log window
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|
472 // Replace '\n' with "(...)" (or with a NUL if the string is too short) |
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|
473 void replace_nl_with_dots(char *bufstr) |
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|
474 { |
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Use "(...)" when cutting a multi-line status message in the log window
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changeset
|
475 char *p = strchr(bufstr, '\n'); |
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diff
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|
476 if (p) { |
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parents:
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diff
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|
477 if (strlen(p) >= 5) |
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parents:
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|
478 strcpy(p, "(...)"); |
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parents:
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|
479 else |
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changeset
|
480 *p = 0; |
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changeset
|
481 } |
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parents:
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diff
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|
482 } |
de6837908702
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parents:
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diff
changeset
|
483 |
727
1c3620668857
Expand tabs when reading history files
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parents:
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changeset
|
484 // ut_expand_tabs(text) |
1c3620668857
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|
485 // Expand tabs in string text. |
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|
486 // If there is no tab in the string, a pointer to text is returned (be |
1c3620668857
Expand tabs when reading history files
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|
487 // careful _not_ to free the pointer in this case). |
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Expand tabs when reading history files
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parents:
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changeset
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488 // If there are some tabs, a new string with expanded chars is returned; this |
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489 // is up to the caller to free this string after use. |
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changeset
|
490 char *ut_expand_tabs(const char *text) |
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changeset
|
491 { |
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changeset
|
492 char *xtext; |
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changeset
|
493 char *p, *q; |
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changeset
|
494 guint8 n=0; |
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changeset
|
495 |
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changeset
|
496 xtext = (char*)text; |
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|
497 for (p=xtext; *p; p++) |
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|
498 if (*p == '\t') n++; |
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|
499 |
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|
500 if (!n) |
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|
501 return (char*)text; |
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changeset
|
502 |
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|
503 xtext = g_new(char, strlen(text) + 1 + 8*n); |
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504 p = (char*)text; |
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505 q = xtext; |
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|
506 do { |
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|
507 if (*p == '\t') { |
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|
508 do { *q++ = ' '; } while ((q-xtext)%8); |
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|
509 } else { |
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diff
changeset
|
510 *q++ = *p; |
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|
511 } |
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|
512 } while (*p++); |
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changeset
|
513 |
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|
514 return xtext; |
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diff
changeset
|
515 } |
1c3620668857
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diff
changeset
|
516 |
1c3620668857
Expand tabs when reading history files
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parents:
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diff
changeset
|
517 |
803
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
518 /* Cygwin's newlib does not have strcasestr() */ |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
changeset
|
519 /* The author of the code before the endif is |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
changeset
|
520 * Jeffrey Stedfast <fejj@ximian.com> |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
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|
521 * and this code is reusable in compliance with the GPL v2. -- somian */ |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
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|
522 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
changeset
|
523 #if !defined(HAVE_STRCASESTR) |
8f8d8f8157a2
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parents:
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diff
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|
524 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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diff
changeset
|
525 # define lowercase(c) (isupper ((int) (c)) ? tolower ((int) (c)) : (int) (c)) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
changeset
|
526 # define bm_index(c, icase) ((icase) ? lowercase (c) : (int) (c)) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
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527 # define bm_equal(c1, c2, icase) ((icase) ? lowercase (c1) == lowercase (c2) : (c1) == (c2)) |
8f8d8f8157a2
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parents:
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diff
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|
528 |
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diff
changeset
|
529 /* FIXME: this is just a guess... should really do some performace tests to get an accurate measure */ |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
changeset
|
530 # define bm_optimal(hlen, nlen) (((hlen) ? (hlen) > 20 : 1) && (nlen) > 10 ? 1 : 0) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
changeset
|
531 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
changeset
|
532 static unsigned char * |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
changeset
|
533 __boyer_moore (const unsigned char *haystack, size_t haystacklen, |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
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diff
changeset
|
534 const unsigned char *needle, size_t needlelen, int icase) |
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Take care of the strcasestr lacking (Cygwin)
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diff
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|
535 { |
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536 register unsigned char *hc_ptr, *nc_ptr; |
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537 unsigned char *he_ptr, *ne_ptr, *h_ptr; |
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|
538 size_t skiptable[256], n; |
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539 register int i; |
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|
540 |
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|
541 #ifdef BOYER_MOORE_CHECKS |
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542 /* we don't need to do these checks since memmem/strstr/etc do it already */ |
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543 /* if the haystack is shorter than the needle then we can't possibly match */ |
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544 if (haystacklen < needlelen) |
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545 return NULL; |
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diff
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|
546 |
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547 /* instant match if the pattern buffer is 0-length */ |
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802
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548 if (needlelen == 0) |
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549 return (unsigned char *) haystack; |
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550 #endif /* BOYER_MOORE_CHECKS */ |
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|
551 |
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552 /* set a pointer at the end of each string */ |
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553 ne_ptr = (unsigned char *) needle + needlelen - 1; |
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554 he_ptr = (unsigned char *) haystack + haystacklen - 1; |
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|
555 |
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diff
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|
556 /* create our skip table */ |
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Take care of the strcasestr lacking (Cygwin)
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802
diff
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|
557 for (i = 0; i < 256; i++) |
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558 skiptable[i] = needlelen; |
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559 for (nc_ptr = (unsigned char *) needle; nc_ptr < ne_ptr; nc_ptr++) |
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diff
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560 skiptable[bm_index (*nc_ptr, icase)] = (size_t) (ne_ptr - nc_ptr); |
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561 |
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562 h_ptr = (unsigned char *) haystack; |
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563 while (haystacklen >= needlelen) { |
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564 hc_ptr = h_ptr + needlelen - 1; /* set the haystack compare pointer */ |
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565 nc_ptr = ne_ptr; /* set the needle compare pointer */ |
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diff
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|
566 |
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diff
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567 /* work our way backwards till they don't match */ |
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diff
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|
568 for (i = 0; nc_ptr > (unsigned char *) needle; nc_ptr--, hc_ptr--, i++) |
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diff
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569 if (!bm_equal (*nc_ptr, *hc_ptr, icase)) |
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570 break; |
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|
571 |
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diff
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|
572 if (!bm_equal (*nc_ptr, *hc_ptr, icase)) { |
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diff
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573 n = skiptable[bm_index (*hc_ptr, icase)]; |
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diff
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|
574 if (n == needlelen && i) |
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diff
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575 if (bm_equal (*ne_ptr, ((unsigned char *) needle)[0], icase)) |
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576 n--; |
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577 h_ptr += n; |
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578 haystacklen -= n; |
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579 } else |
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580 return (unsigned char *) h_ptr; |
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diff
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|
581 } |
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802
diff
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|
582 |
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Take care of the strcasestr lacking (Cygwin)
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diff
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|
583 return NULL; |
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Take care of the strcasestr lacking (Cygwin)
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diff
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|
584 } |
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|
585 |
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diff
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|
586 /* |
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587 * strcasestr: |
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588 * @haystack: string to search |
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802
diff
changeset
|
589 * @needle: substring to search for |
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590 * |
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diff
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591 * Finds the first occurence of the substring @needle within the |
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diff
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|
592 * string @haystack ignoring case. |
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diff
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|
593 * |
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diff
changeset
|
594 * Returns a pointer to the beginning of the substring match within |
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diff
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|
595 * @haystack, or NULL if the substring is not found. |
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|
596 **/ |
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|
597 char * |
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diff
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|
598 strcasestr (const char *haystack, const char *needle) |
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diff
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|
599 { |
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diff
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|
600 register unsigned char *h, *n, *hc, *nc; |
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802
diff
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|
601 size_t needlelen; |
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802
diff
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|
602 |
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diff
changeset
|
603 needlelen = strlen (needle); |
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Take care of the strcasestr lacking (Cygwin)
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diff
changeset
|
604 |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
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|
605 if (needlelen == 0) { |
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Take care of the strcasestr lacking (Cygwin)
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802
diff
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|
606 return (char *) haystack; |
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Take care of the strcasestr lacking (Cygwin)
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802
diff
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|
607 } else if (bm_optimal (0, needlelen)) { |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
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|
608 return (char *) __boyer_moore ((const unsigned char *) haystack, |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
609 strlen (haystack), |
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Take care of the strcasestr lacking (Cygwin)
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diff
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|
610 (const unsigned char *) needle, |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
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|
611 needlelen, 1); |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
612 } |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
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|
613 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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802
diff
changeset
|
614 h = (unsigned char *) haystack; |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
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|
615 n = (unsigned char *) needle; |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
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|
616 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
617 while (*(h + needlelen - 1)) { |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
618 if (lowercase (*h) == lowercase (*n)) { |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
619 for (hc = h + 1, nc = n + 1; *hc && *nc; hc++, nc++) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
620 if (lowercase (*hc) != lowercase (*nc)) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
621 break; |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
622 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
623 if (!*nc) |
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Take care of the strcasestr lacking (Cygwin)
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802
diff
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|
624 return (char *) h; |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
625 } |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
626 h++; |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
627 } |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
628 return NULL; |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
629 } |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
630 #endif /* !HAVE_STRCASESTR */ |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
631 |
580 | 632 /* vim: set expandtab cindent cinoptions=>2\:2(0: For Vim users... */ |