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annotate mcabber/src/utils.c @ 1080:4ce46a278336
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author | Mikael Berthe <mikael@lilotux.net> |
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date | Tue, 05 Dec 2006 19:00:30 +0100 |
parents | c0d44a9a99bc |
children | 8e12137fab20 |
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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 "utils.h" |
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43 #include "logprint.h" |
241 | 44 |
76 | 45 static int DebugEnabled; |
77 | 46 static char *FName; |
24 | 47 |
952 | 48 void ut_InitDebug(int level, const char *filename) |
24 | 49 { |
77 | 50 FILE *fp; |
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51 struct stat buf; |
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52 int err; |
77 | 53 |
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54 if (level < 1) { |
138 | 55 DebugEnabled = 0; |
56 FName = NULL; | |
57 return; | |
58 } | |
59 | |
60 if (filename) | |
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61 FName = g_strdup(filename); |
77 | 62 else { |
138 | 63 FName = getenv("HOME"); |
64 if (!FName) | |
65 FName = "/tmp/mcabberlog"; | |
66 else { | |
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67 char *tmpname = g_new(char, strlen(FName) + 12); |
138 | 68 strcpy(tmpname, FName); |
69 strcat(tmpname, "/mcabberlog"); | |
70 FName = tmpname; | |
71 } | |
77 | 72 } |
24 | 73 |
74 DebugEnabled = level; | |
76 | 75 |
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76 fp = fopen(FName, "a"); |
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77 if (!fp) { |
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78 fprintf(stderr, "ERROR: Cannot open tracelog file\n"); |
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79 return; |
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80 } |
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81 |
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82 err = fstat(fileno(fp), &buf); |
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83 if (err || buf.st_uid != geteuid()) { |
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84 fclose(fp); |
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85 DebugEnabled = 0; |
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86 FName = NULL; |
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87 if (err) { |
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88 fprintf(stderr, "ERROR: cannot stat the tracelog file!\n"); |
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89 } else { |
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90 fprintf(stderr, "ERROR: tracelog file does not belong to you!\n"); |
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91 } |
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92 return; |
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93 } |
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94 fchmod(fileno(fp), S_IRUSR|S_IWUSR); |
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95 |
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96 fprintf(fp, "New trace log started.\n" |
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97 "----------------------\n"); |
24 | 98 fclose(fp); |
99 } | |
100 | |
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101 void ut_WriteLog(unsigned int flag, const char *data) |
24 | 102 { |
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103 if (!DebugEnabled || !FName) return; |
393 | 104 |
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105 if (((DebugEnabled == 2) && (flag & (LPRINT_LOG|LPRINT_DEBUG))) || |
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106 ((DebugEnabled == 1) && (flag & LPRINT_LOG))) { |
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107 FILE *fp = fopen(FName, "a+"); |
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108 if (!fp) { |
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109 scr_LogPrint(LPRINT_NORMAL, "ERROR: Cannot open tracelog file"); |
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110 return; |
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111 } |
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112 fputs(data, fp); |
24 | 113 fclose(fp); |
114 } | |
115 } | |
116 | |
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117 // checkset_perm(name, setmode) |
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118 // Check the permissions of the "name" file/dir |
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119 // If setmode is true, correct the permissions if they are wrong |
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120 // Return values: -1 == bad file/dir, 0 == success, 1 == cannot correct |
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121 int checkset_perm(const char *name, unsigned int setmode) |
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122 { |
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123 int fd; |
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124 struct stat buf; |
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125 |
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126 #ifdef __CYGWIN__ |
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127 // Permission checking isn't efficent on Cygwin |
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128 return 0; |
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129 #endif |
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130 |
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131 fd = lstat(name, &buf); |
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132 if (fd == -1) return -1; |
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133 |
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134 if (buf.st_uid != geteuid()) { |
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135 scr_LogPrint(LPRINT_LOGNORM, "Wrong file owner [%s]", name); |
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136 return 1; |
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137 } |
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138 |
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139 if (buf.st_mode & (S_IRGRP | S_IWGRP | S_IXGRP) || |
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140 buf.st_mode & (S_IROTH | S_IWOTH | S_IXOTH)) { |
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141 if (setmode) { |
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142 mode_t newmode = 0; |
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143 scr_LogPrint(LPRINT_LOGNORM, "Bad permissions [%s]", name); |
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144 if (S_ISDIR(buf.st_mode)) |
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145 newmode |= S_IXUSR; |
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146 newmode |= S_IRUSR | S_IWUSR; |
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147 if (chmod(name, newmode)) { |
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148 scr_LogPrint(LPRINT_LOGNORM, "WARNING: Failed to correct permissions!"); |
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149 return 1; |
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150 } |
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151 scr_LogPrint(LPRINT_LOGNORM, "Permissions have been corrected"); |
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152 } else { |
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153 scr_LogPrint(LPRINT_LOGNORM, "WARNING: Bad permissions [%s]", name); |
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154 return 1; |
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155 } |
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156 } |
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157 |
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158 return 0; |
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159 } |
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160 |
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161 const char *ut_get_tmpdir(void) |
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162 { |
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163 static const char *tmpdir; |
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164 const char *tmpvars[] = { "MCABBERTMPDIR", "TMP", "TMPDIR", "TEMP" }; |
735 | 165 unsigned int i; |
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166 |
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167 if (tmpdir) |
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168 return tmpdir; |
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169 |
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170 for (i = 0; i < (sizeof(tmpvars) / sizeof(const char *)); i++) { |
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171 tmpdir = getenv(tmpvars[i]); |
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172 if (tmpdir && tmpdir[0] && tmpdir[0] == '/' && tmpdir[1]) { |
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173 // Looks ok. |
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174 return tmpdir; |
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175 } |
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176 } |
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177 |
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178 // Default temporary directory |
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179 tmpdir = "/tmp"; |
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180 return tmpdir; |
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181 } |
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182 |
241 | 183 // to_iso8601(dststr, timestamp) |
184 // Convert timestamp to iso8601 format, and store it in dststr. | |
185 // NOTE: dststr should be at last 19 chars long. | |
186 // Return should be 0 | |
187 int to_iso8601(char *dststr, time_t timestamp) | |
188 { | |
189 struct tm *tm_time; | |
190 int ret; | |
191 | |
192 tm_time = gmtime(×tamp); | |
193 | |
194 ret = snprintf(dststr, 19, "%.4d%02d%02dT%02d:%02d:%02dZ", | |
195 1900+tm_time->tm_year, tm_time->tm_mon+1, tm_time->tm_mday, | |
196 tm_time->tm_hour, tm_time->tm_min, tm_time->tm_sec); | |
197 | |
198 return ((ret == -1) ? -1 : 0); | |
199 } | |
200 | |
201 // from_iso8601(timestamp, utc) | |
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202 // This function came from the Gaim project, gaim_str_to_time(). |
241 | 203 // (Actually date may not be pure iso-8601) |
204 // Thanks, guys! | |
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205 // ** Modified by somian 10 Apr 2006 with advice from ysth. |
241 | 206 time_t from_iso8601(const char *timestamp, int utc) |
207 { | |
208 struct tm t; | |
209 time_t retval = 0; | |
210 char buf[32]; | |
211 char *c; | |
212 int tzoff = 0; | |
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213 int hms_succ = 0; |
241 | 214 |
215 time(&retval); | |
216 localtime_r(&retval, &t); | |
217 | |
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218 /* Reset time to midnight (00:00:00) */ |
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219 t.tm_hour = t.tm_min = t.tm_sec = 0; |
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220 |
241 | 221 snprintf(buf, sizeof(buf), "%s", timestamp); |
222 c = buf; | |
223 | |
224 /* 4 digit year */ | |
225 if (!sscanf(c, "%04d", &t.tm_year)) return 0; | |
226 c+=4; | |
227 if (*c == '-') | |
228 c++; | |
229 | |
230 t.tm_year -= 1900; | |
231 | |
232 /* 2 digit month */ | |
233 if (!sscanf(c, "%02d", &t.tm_mon)) return 0; | |
234 c+=2; | |
235 if (*c == '-') | |
236 c++; | |
237 | |
238 t.tm_mon -= 1; | |
239 | |
240 /* 2 digit day */ | |
241 if (!sscanf(c, "%02d", &t.tm_mday)) return 0; | |
242 c+=2; | |
243 if (*c == 'T' || *c == '.') { /* we have more than a date, keep going */ | |
244 c++; /* skip the "T" */ | |
245 | |
246 /* 2 digit hour */ | |
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247 if (sscanf(c, "%02d:%02d:%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3) |
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248 { |
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249 hms_succ = 1; |
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250 c += 8; |
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251 } |
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252 else if (sscanf(c, "%02d%02d%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3) |
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253 { |
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254 hms_succ = 1; |
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255 c += 6; |
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256 } |
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257 |
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258 if (hms_succ) { |
241 | 259 int tzhrs, tzmins; |
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260 |
241 | 261 if (*c == '.') /* dealing with precision we don't care about */ |
262 c += 4; | |
263 | |
264 if ((*c == '+' || *c == '-') && | |
265 sscanf(c+1, "%02d:%02d", &tzhrs, &tzmins)) { | |
266 tzoff = tzhrs*60*60 + tzmins*60; | |
267 if (*c == '+') | |
268 tzoff *= -1; | |
269 } | |
270 | |
271 if (tzoff || utc) { | |
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272 #ifdef HAVE_TM_GMTOFF |
241 | 273 tzoff += t.tm_gmtoff; |
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274 #else |
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275 # ifdef HAVE_TIMEZONE |
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276 tzset(); /* making sure */ |
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277 tzoff -= timezone; |
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278 # endif |
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279 #endif |
241 | 280 } |
281 } | |
282 } | |
283 | |
284 t.tm_isdst = -1; | |
285 | |
286 retval = mktime(&t); | |
287 | |
288 retval += tzoff; | |
289 | |
290 return retval; | |
291 } | |
419 | 292 |
293 // Should only be used for delays < 1s | |
294 inline void safe_usleep(unsigned int usec) | |
295 { | |
296 struct timespec req; | |
297 req.tv_sec = 0; | |
298 req.tv_nsec = (long)usec * 1000L; | |
299 nanosleep(&req, NULL); | |
300 } | |
452 | 301 |
302 /** | |
303 * Derived from libjabber/jid.c, because the libjabber version is not | |
304 * really convenient for our usage. | |
305 * | |
306 * Check if the full JID is valid | |
307 * Return 0 if it is valid, non zero otherwise | |
308 */ | |
1058 | 309 int check_jid_syntax(char *fjid) |
452 | 310 { |
311 char *str; | |
312 char *domain, *resource; | |
313 int domlen; | |
314 | |
1058 | 315 if (!fjid) return 1; |
452 | 316 |
1058 | 317 domain = strchr(fjid, JID_DOMAIN_SEPARATOR); |
452 | 318 |
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319 /* the username is optional */ |
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320 if (!domain) { |
1058 | 321 domain = fjid; |
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322 } else { |
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323 /* node identifiers may not be longer than 1023 bytes */ |
1058 | 324 if ((domain == fjid) || (domain-fjid > 1023)) |
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325 return 1; |
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326 domain++; |
452 | 327 |
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328 /* check for low and invalid ascii characters in the username */ |
1058 | 329 for (str = fjid; *str != JID_DOMAIN_SEPARATOR; str++) { |
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330 if (*str <= ' ' || *str == ':' || *str == JID_DOMAIN_SEPARATOR || |
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331 *str == '<' || *str == '>' || *str == '\'' || |
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332 *str == '"' || *str == '&') { |
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333 return 1; |
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334 } |
452 | 335 } |
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336 /* the username is okay as far as we can tell without LIBIDN */ |
452 | 337 } |
338 | |
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339 resource = strchr(domain, JID_RESOURCE_SEPARATOR); |
452 | 340 |
341 /* the resource is optional */ | |
342 if (resource) { | |
343 domlen = resource - domain; | |
344 resource++; | |
345 /* resources may not be longer than 1023 bytes */ | |
346 if ((*resource == '\0') || strlen(resource) > 1023) | |
347 return 1; | |
348 } else { | |
349 domlen = strlen(domain); | |
350 } | |
351 | |
352 /* there must be a domain identifier */ | |
353 if (domlen == 0) return 1; | |
354 | |
355 /* and it must not be longer than 1023 bytes */ | |
356 if (domlen > 1023) return 1; | |
357 | |
358 /* make sure the hostname is valid characters */ | |
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359 for (str = domain; *str != '\0' && *str != JID_RESOURCE_SEPARATOR; str++) { |
452 | 360 if (!(isalnum(*str) || *str == '.' || *str == '-' || *str == '_')) |
361 return 1; | |
362 } | |
363 | |
364 /* it's okay as far as we can tell without LIBIDN */ | |
365 return 0; | |
366 } | |
367 | |
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368 |
452 | 369 void mc_strtolower(char *str) |
370 { | |
371 if (!str) return; | |
372 for ( ; *str; str++) | |
373 *str = tolower(*str); | |
374 } | |
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375 |
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376 // strip_arg_special_chars(string) |
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377 // Remove quotes and backslashes before an escaped quote |
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378 // Only quotes need a backslash |
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379 // Ex.: ["a b"] -> [a b]; [a\"b] -> [a"b] |
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380 void strip_arg_special_chars(char *s) |
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381 { |
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382 int instring = FALSE; |
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383 int escape = FALSE; |
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384 char *p; |
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385 |
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386 if (!s) return; |
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387 |
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388 for (p = s; *p; p++) { |
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389 if (*p == '"') { |
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390 if (!escape) { |
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391 instring = !instring; |
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392 strcpy(p, p+1); |
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393 p--; |
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394 } else { |
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395 escape = FALSE; |
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396 } |
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397 } else if (*p == '\\') { |
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398 if (!escape) { |
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399 if (*(p+1) == '"') { |
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400 strcpy(p, p+1); |
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401 p--; |
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402 } |
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403 escape = TRUE; |
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404 } else { |
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405 escape = FALSE; |
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406 } |
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407 } |
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408 } |
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409 } |
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410 |
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411 // split_arg(arg, n, preservelast) |
551
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412 // Split the string arg into a maximum of n pieces, taking care of |
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413 // double quotes. |
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414 // Return a null-terminated array of strings. This array should be freed |
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415 // be the caller after use, for example with free_arg_lst(). |
559
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Fix a small bug in split_arg()
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parents:
556
diff
changeset
|
416 // If dontstriplast is true, the Nth argument isn't stripped (i.e. no |
4eb579399613
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parents:
556
diff
changeset
|
417 // processing of quote chars) |
554
2424bbf0a6db
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parents:
553
diff
changeset
|
418 char **split_arg(const char *arg, unsigned int n, int dontstriplast) |
551
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diff
changeset
|
419 { |
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diff
changeset
|
420 char **arglst; |
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diff
changeset
|
421 const char *p, *start, *end; |
735 | 422 unsigned int i = 0; |
551
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diff
changeset
|
423 int instring = FALSE; |
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parents:
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diff
changeset
|
424 int escape = FALSE; |
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parents:
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diff
changeset
|
425 |
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parents:
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diff
changeset
|
426 arglst = g_new0(char*, n+1); |
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parents:
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diff
changeset
|
427 |
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parents:
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diff
changeset
|
428 if (!arg || !n) return arglst; |
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parents:
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diff
changeset
|
429 |
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parents:
524
diff
changeset
|
430 // Skip leading space |
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parents:
524
diff
changeset
|
431 for (start = arg; *start && *start == ' '; start++) ; |
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parents:
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diff
changeset
|
432 // End of string pointer |
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parents:
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diff
changeset
|
433 for (end = start; *end; end++) ; |
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parents:
524
diff
changeset
|
434 // Skip trailing space |
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parents:
524
diff
changeset
|
435 while (end > start+1 && *(end-1) == ' ') |
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parents:
524
diff
changeset
|
436 end--; |
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parents:
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diff
changeset
|
437 |
c71699efa5cc
Add split_arg() / free_arg_lst()
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parents:
524
diff
changeset
|
438 for (p = start; p < end; p++) { |
c71699efa5cc
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parents:
524
diff
changeset
|
439 if (*p == '"' && !escape) |
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parents:
524
diff
changeset
|
440 instring = !instring; |
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parents:
524
diff
changeset
|
441 if (*p == '\\' && !escape) |
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parents:
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diff
changeset
|
442 escape = TRUE; |
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changeset
|
443 else if (escape) |
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parents:
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changeset
|
444 escape = FALSE; |
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parents:
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changeset
|
445 if (*p == ' ' && !instring && i+1 < n) { |
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parents:
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diff
changeset
|
446 // end of parameter |
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diff
changeset
|
447 *(arglst+i) = g_strndup(start, p-start); |
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parents:
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diff
changeset
|
448 strip_arg_special_chars(*(arglst+i)); |
556 | 449 for (start = p+1; *start && *start == ' '; start++) ; |
911 | 450 p = start; |
551
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changeset
|
451 i++; |
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parents:
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diff
changeset
|
452 } |
c71699efa5cc
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parents:
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diff
changeset
|
453 } |
c71699efa5cc
Add split_arg() / free_arg_lst()
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parents:
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diff
changeset
|
454 |
c71699efa5cc
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parents:
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diff
changeset
|
455 if (start < end) { |
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parents:
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diff
changeset
|
456 *(arglst+i) = g_strndup(start, end-start); |
559
4eb579399613
Fix a small bug in split_arg()
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parents:
556
diff
changeset
|
457 if (!dontstriplast || i+1 < n) |
554
2424bbf0a6db
Some more work on do_room()
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parents:
553
diff
changeset
|
458 strip_arg_special_chars(*(arglst+i)); |
551
c71699efa5cc
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parents:
524
diff
changeset
|
459 } |
c71699efa5cc
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parents:
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diff
changeset
|
460 |
c71699efa5cc
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parents:
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diff
changeset
|
461 return arglst; |
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parents:
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diff
changeset
|
462 } |
c71699efa5cc
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parents:
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diff
changeset
|
463 |
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parents:
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diff
changeset
|
464 // free_arg_lst(arglst) |
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diff
changeset
|
465 // Free an array allocated by split_arg() |
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parents:
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diff
changeset
|
466 void free_arg_lst(char **arglst) |
c71699efa5cc
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parents:
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diff
changeset
|
467 { |
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parents:
524
diff
changeset
|
468 char **arg_elt; |
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parents:
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diff
changeset
|
469 |
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parents:
524
diff
changeset
|
470 for (arg_elt = arglst; *arg_elt; arg_elt++) |
c71699efa5cc
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parents:
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diff
changeset
|
471 g_free(*arg_elt); |
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parents:
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diff
changeset
|
472 g_free(arglst); |
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parents:
524
diff
changeset
|
473 } |
576 | 474 |
655
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
475 // replace_nl_with_dots(bufstr) |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
476 // Replace '\n' with "(...)" (or with a NUL if the string is too short) |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
477 void replace_nl_with_dots(char *bufstr) |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
478 { |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
479 char *p = strchr(bufstr, '\n'); |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
480 if (p) { |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
481 if (strlen(p) >= 5) |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
482 strcpy(p, "(...)"); |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
483 else |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
484 *p = 0; |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
485 } |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
486 } |
de6837908702
Use "(...)" when cutting a multi-line status message in the log window
Mikael Berthe <mikael@lilotux.net>
parents:
580
diff
changeset
|
487 |
727
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
488 // ut_expand_tabs(text) |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
489 // Expand tabs in string text. |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
490 // If there is no tab in the string, a pointer to text is returned (be |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
491 // careful _not_ to free the pointer in this case). |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
492 // If there are some tabs, a new string with expanded chars is returned; this |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
493 // is up to the caller to free this string after use. |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
494 char *ut_expand_tabs(const char *text) |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
495 { |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
496 char *xtext; |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
497 char *p, *q; |
1c3620668857
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Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
498 guint8 n=0; |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
499 |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
500 xtext = (char*)text; |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
501 for (p=xtext; *p; p++) |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
502 if (*p == '\t') n++; |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
503 |
1c3620668857
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parents:
699
diff
changeset
|
504 if (!n) |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
505 return (char*)text; |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
506 |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
507 xtext = g_new(char, strlen(text) + 1 + 8*n); |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
508 p = (char*)text; |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
509 q = xtext; |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
510 do { |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
511 if (*p == '\t') { |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
512 do { *q++ = ' '; } while ((q-xtext)%8); |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
513 } else { |
1c3620668857
Expand tabs when reading history files
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parents:
699
diff
changeset
|
514 *q++ = *p; |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
515 } |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
516 } while (*p++); |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
517 |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
518 return xtext; |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
519 } |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
520 |
1c3620668857
Expand tabs when reading history files
Mikael Berthe <mikael@lilotux.net>
parents:
699
diff
changeset
|
521 |
803
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
522 /* Cygwin's newlib does not have strcasestr() */ |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
523 /* The author of the code before the endif is |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
524 * Jeffrey Stedfast <fejj@ximian.com> |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
525 * and this code is reusable in compliance with the GPL v2. -- somian */ |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
526 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
527 #if !defined(HAVE_STRCASESTR) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
528 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
529 # define lowercase(c) (isupper ((int) (c)) ? tolower ((int) (c)) : (int) (c)) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
530 # define bm_index(c, icase) ((icase) ? lowercase (c) : (int) (c)) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
531 # define bm_equal(c1, c2, icase) ((icase) ? lowercase (c1) == lowercase (c2) : (c1) == (c2)) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
532 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
533 /* 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)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
534 # define bm_optimal(hlen, nlen) (((hlen) ? (hlen) > 20 : 1) && (nlen) > 10 ? 1 : 0) |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
535 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
Soren Andersen <somian@pobox.com>
parents:
802
diff
changeset
|
536 static unsigned char * |
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Take care of the strcasestr lacking (Cygwin)
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537 __boyer_moore (const unsigned char *haystack, size_t haystacklen, |
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538 const unsigned char *needle, size_t needlelen, int icase) |
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539 { |
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540 register unsigned char *hc_ptr, *nc_ptr; |
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541 unsigned char *he_ptr, *ne_ptr, *h_ptr; |
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542 size_t skiptable[256], n; |
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543 register int i; |
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544 |
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545 #ifdef BOYER_MOORE_CHECKS |
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546 /* we don't need to do these checks since memmem/strstr/etc do it already */ |
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547 /* if the haystack is shorter than the needle then we can't possibly match */ |
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548 if (haystacklen < needlelen) |
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549 return NULL; |
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550 |
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diff
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551 /* instant match if the pattern buffer is 0-length */ |
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552 if (needlelen == 0) |
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553 return (unsigned char *) haystack; |
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554 #endif /* BOYER_MOORE_CHECKS */ |
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|
555 |
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556 /* set a pointer at the end of each string */ |
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557 ne_ptr = (unsigned char *) needle + needlelen - 1; |
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558 he_ptr = (unsigned char *) haystack + haystacklen - 1; |
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559 |
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560 /* create our skip table */ |
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561 for (i = 0; i < 256; i++) |
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562 skiptable[i] = needlelen; |
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563 for (nc_ptr = (unsigned char *) needle; nc_ptr < ne_ptr; nc_ptr++) |
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564 skiptable[bm_index (*nc_ptr, icase)] = (size_t) (ne_ptr - nc_ptr); |
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565 |
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566 h_ptr = (unsigned char *) haystack; |
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567 while (haystacklen >= needlelen) { |
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568 hc_ptr = h_ptr + needlelen - 1; /* set the haystack compare pointer */ |
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569 nc_ptr = ne_ptr; /* set the needle compare pointer */ |
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diff
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|
570 |
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|
571 /* work our way backwards till they don't match */ |
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572 for (i = 0; nc_ptr > (unsigned char *) needle; nc_ptr--, hc_ptr--, i++) |
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573 if (!bm_equal (*nc_ptr, *hc_ptr, icase)) |
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574 break; |
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|
575 |
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diff
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|
576 if (!bm_equal (*nc_ptr, *hc_ptr, icase)) { |
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diff
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577 n = skiptable[bm_index (*hc_ptr, icase)]; |
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578 if (n == needlelen && i) |
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579 if (bm_equal (*ne_ptr, ((unsigned char *) needle)[0], icase)) |
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580 n--; |
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581 h_ptr += n; |
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diff
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|
582 haystacklen -= n; |
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diff
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|
583 } else |
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584 return (unsigned char *) h_ptr; |
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diff
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|
585 } |
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|
586 |
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587 return NULL; |
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diff
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|
588 } |
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|
589 |
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diff
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|
590 /* |
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diff
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|
591 * strcasestr: |
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diff
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|
592 * @haystack: string to search |
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593 * @needle: substring to search for |
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|
594 * |
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595 * Finds the first occurence of the substring @needle within the |
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diff
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|
596 * string @haystack ignoring case. |
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597 * |
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598 * Returns a pointer to the beginning of the substring match within |
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diff
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|
599 * @haystack, or NULL if the substring is not found. |
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diff
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|
600 **/ |
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diff
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|
601 char * |
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diff
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|
602 strcasestr (const char *haystack, const char *needle) |
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diff
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|
603 { |
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diff
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|
604 register unsigned char *h, *n, *hc, *nc; |
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diff
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|
605 size_t needlelen; |
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diff
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|
606 |
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diff
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|
607 needlelen = strlen (needle); |
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Take care of the strcasestr lacking (Cygwin)
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diff
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|
608 |
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802
diff
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|
609 if (needlelen == 0) { |
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802
diff
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|
610 return (char *) haystack; |
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Take care of the strcasestr lacking (Cygwin)
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diff
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|
611 } 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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|
612 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
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|
613 strlen (haystack), |
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Take care of the strcasestr lacking (Cygwin)
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diff
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|
614 (const unsigned char *) needle, |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
615 needlelen, 1); |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
616 } |
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Take care of the strcasestr lacking (Cygwin)
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802
diff
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|
617 |
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diff
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|
618 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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|
619 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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|
620 |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
621 while (*(h + needlelen - 1)) { |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
622 if (lowercase (*h) == lowercase (*n)) { |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
623 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
|
624 if (lowercase (*hc) != lowercase (*nc)) |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
625 break; |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
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|
626 |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
627 if (!*nc) |
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Take care of the strcasestr lacking (Cygwin)
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diff
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|
628 return (char *) h; |
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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
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|
630 h++; |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
changeset
|
631 } |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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802
diff
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|
632 return NULL; |
8f8d8f8157a2
Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
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|
633 } |
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Take care of the strcasestr lacking (Cygwin)
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802
diff
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|
634 #endif /* !HAVE_STRCASESTR */ |
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Take care of the strcasestr lacking (Cygwin)
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parents:
802
diff
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|
635 |
580 | 636 /* vim: set expandtab cindent cinoptions=>2\:2(0: For Vim users... */ |