string.c
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1 /************************************************************************/
14 /************************************************************************/
15 
16 #include <GKlib.h>
17 
18 
19 
20 /************************************************************************/
36 /************************************************************************/
37 char *gk_strchr_replace(char *str, char *fromlist, char *tolist)
38 {
39  gk_idx_t i, j, k;
40  size_t len, fromlen, tolen;
41 
42  len = strlen(str);
43  fromlen = strlen(fromlist);
44  tolen = strlen(tolist);
45 
46  for (i=j=0; i<len; i++) {
47  for (k=0; k<fromlen; k++) {
48  if (str[i] == fromlist[k]) {
49  if (k < tolen)
50  str[j++] = tolist[k];
51  break;
52  }
53  }
54  if (k == fromlen)
55  str[j++] = str[i];
56  }
57  str[j] = '\0';
58 
59  return str;
60 }
61 
62 
63 
64 /************************************************************************/
93 /************************************************************************/
94 int gk_strstr_replace(char *str, char *pattern, char *replacement, char *options,
95  char **new_str)
96 {
97  gk_idx_t i;
98  int j, rc, flags, global, nmatches;
99  size_t len, rlen, nlen, offset, noffset;
100  regex_t re;
101  regmatch_t matches[10];
102 
103 
104  /* Parse the options */
105  flags = REG_EXTENDED;
106  if (strchr(options, 'i') != NULL)
107  flags = flags | REG_ICASE;
108  global = (strchr(options, 'g') != NULL ? 1 : 0);
109 
110 
111  /* Compile the regex */
112  if ((rc = regcomp(&re, pattern, flags)) != 0) {
113  len = regerror(rc, &re, NULL, 0);
114  *new_str = gk_cmalloc(len, "gk_strstr_replace: new_str");
115  regerror(rc, &re, *new_str, len);
116  return 0;
117  }
118 
119  /* Prepare the output string */
120  len = strlen(str);
121  nlen = 2*len;
122  noffset = 0;
123  *new_str = gk_cmalloc(nlen+1, "gk_strstr_replace: new_str");
124 
125 
126  /* Get into the matching-replacing loop */
127  rlen = strlen(replacement);
128  offset = 0;
129  nmatches = 0;
130  do {
131  rc = regexec(&re, str+offset, 10, matches, 0);
132 
133  if (rc == REG_ESPACE) {
134  gk_free((void **)new_str, LTERM);
135  *new_str = gk_strdup("regexec ran out of memory.");
136  regfree(&re);
137  return 0;
138  }
139  else if (rc == REG_NOMATCH) {
140  if (nlen-noffset < len-offset) {
141  nlen += (len-offset) - (nlen-noffset);
142  *new_str = (char *)gk_realloc(*new_str, (nlen+1)*sizeof(char), "gk_strstr_replace: new_str");
143  }
144  strcpy(*new_str+noffset, str+offset);
145  noffset += (len-offset);
146  break;
147  }
148  else { /* A match was found! */
149  nmatches++;
150 
151  /* Copy the left unmatched portion of the string */
152  if (matches[0].rm_so > 0) {
153  if (nlen-noffset < matches[0].rm_so) {
154  nlen += matches[0].rm_so - (nlen-noffset);
155  *new_str = (char *)gk_realloc(*new_str, (nlen+1)*sizeof(char), "gk_strstr_replace: new_str");
156  }
157  strncpy(*new_str+noffset, str+offset, matches[0].rm_so);
158  noffset += matches[0].rm_so;
159  }
160 
161  /* Go and append the replacement string */
162  for (i=0; i<rlen; i++) {
163  switch (replacement[i]) {
164  case '\\':
165  if (i+1 < rlen) {
166  if (nlen-noffset < 1) {
167  nlen += nlen + 1;
168  *new_str = (char *)gk_realloc(*new_str, (nlen+1)*sizeof(char), "gk_strstr_replace: new_str");
169  }
170  *new_str[noffset++] = replacement[++i];
171  }
172  else {
173  gk_free((void **)new_str, LTERM);
174  *new_str = gk_strdup("Error in replacement string. Missing character following '\'.");
175  regfree(&re);
176  return 0;
177  }
178  break;
179 
180  case '$':
181  if (i+1 < rlen) {
182  j = (int)(replacement[++i] - '0');
183  if (j < 0 || j > 9) {
184  gk_free((void **)new_str, LTERM);
185  *new_str = gk_strdup("Error in captured subexpression specification.");
186  regfree(&re);
187  return 0;
188  }
189 
190  if (nlen-noffset < matches[j].rm_eo-matches[j].rm_so) {
191  nlen += nlen + (matches[j].rm_eo-matches[j].rm_so);
192  *new_str = (char *)gk_realloc(*new_str, (nlen+1)*sizeof(char), "gk_strstr_replace: new_str");
193  }
194 
195  strncpy(*new_str+noffset, str+offset+matches[j].rm_so, matches[j].rm_eo);
196  noffset += matches[j].rm_eo-matches[j].rm_so;
197  }
198  else {
199  gk_free((void **)new_str, LTERM);
200  *new_str = gk_strdup("Error in replacement string. Missing subexpression number folloing '$'.");
201  regfree(&re);
202  return 0;
203  }
204  break;
205 
206  default:
207  if (nlen-noffset < 1) {
208  nlen += nlen + 1;
209  *new_str = (char *)gk_realloc(*new_str, (nlen+1)*sizeof(char), "gk_strstr_replace: new_str");
210  }
211  (*new_str)[noffset++] = replacement[i];
212  }
213  }
214 
215  /* Update the offset of str for the next match */
216  offset += matches[0].rm_eo;
217 
218  if (!global) {
219  /* Copy the right portion of the string if no 'g' option */
220  if (nlen-noffset < len-offset) {
221  nlen += (len-offset) - (nlen-noffset);
222  *new_str = (char *)gk_realloc(*new_str, (nlen+1)*sizeof(char), "gk_strstr_replace: new_str");
223  }
224  strcpy(*new_str+noffset, str+offset);
225  noffset += (len-offset);
226  }
227  }
228  } while (global);
229 
230  (*new_str)[noffset] = '\0';
231 
232  regfree(&re);
233  return nmatches + 1;
234 
235 }
236 
237 
238 
239 /************************************************************************/
253 /*************************************************************************/
254 char *gk_strtprune(char *str, char *rmlist)
255 {
256  gk_idx_t i, j;
257  size_t len;
258 
259  len = strlen(rmlist);
260 
261  for (i=strlen(str)-1; i>=0; i--) {
262  for (j=0; j<len; j++) {
263  if (str[i] == rmlist[j])
264  break;
265  }
266  if (j == len)
267  break;
268  }
269 
270  str[i+1] = '\0';
271 
272  return str;
273 }
274 
275 
276 /************************************************************************/
290 /*************************************************************************/
291 char *gk_strhprune(char *str, char *rmlist)
292 {
293  gk_idx_t i, j;
294  size_t len;
295 
296  len = strlen(rmlist);
297 
298  for (i=0; str[i]; i++) {
299  for (j=0; j<len; j++) {
300  if (str[i] == rmlist[j])
301  break;
302  }
303  if (j == len)
304  break;
305  }
306 
307  if (i>0) { /* If something needs to be removed */
308  for (j=0; str[i]; i++, j++)
309  str[j] = str[i];
310  str[j] = '\0';
311  }
312 
313  return str;
314 }
315 
316 
317 /************************************************************************/
327 /*************************************************************************/
328 char *gk_strtoupper(char *str)
329 {
330  int i;
331 
332  for (i=0; str[i]!='\0'; str[i]=toupper(str[i]), i++);
333  return str;
334 }
335 
336 
337 /************************************************************************/
347 /*************************************************************************/
348 char *gk_strtolower(char *str)
349 {
350  int i;
351 
352  for (i=0; str[i]!='\0'; str[i]=tolower(str[i]), i++);
353  return str;
354 }
355 
356 
357 /************************************************************************/
371 /*************************************************************************/
372 char *gk_strdup(char *orgstr)
373 {
374  int len;
375  char *str=NULL;
376 
377  if (orgstr != NULL) {
378  len = strlen(orgstr)+1;
379  str = gk_malloc(len*sizeof(char), "gk_strdup: str");
380  strcpy(str, orgstr);
381  }
382 
383  return str;
384 }
385 
386 
387 /************************************************************************/
404 /*************************************************************************/
405 int gk_strcasecmp(char *s1, char *s2)
406 {
407  int i=0;
408 
409  if (strlen(s1) != strlen(s2))
410  return 0;
411 
412  while (s1[i] != '\0') {
413  if (tolower(s1[i]) != tolower(s2[i]))
414  return 0;
415  i++;
416  }
417 
418  return 1;
419 }
420 
421 
422 /************************************************************************/
432 /*************************************************************************/
433 int gk_strrcmp(char *s1, char *s2)
434 {
435  int i1 = strlen(s1)-1;
436  int i2 = strlen(s2)-1;
437 
438  while ((i1 >= 0) && (i2 >= 0)) {
439  if (s1[i1] != s2[i2])
440  return (s1[i1] - s2[i2]);
441  i1--;
442  i2--;
443  }
444 
445  /* i1 == -1 and/or i2 == -1 */
446 
447  if (i1 < i2)
448  return -1;
449  if (i1 > i2)
450  return 1;
451  return 0;
452 }
453 
454 
455 
456 /************************************************************************/
469 /*************************************************************************/
470 char *gk_time2str(time_t time)
471 {
472  static char datestr[128];
473  struct tm *tm;
474 
475  tm = localtime(&time);
476 
477  if (strftime(datestr, 128, "%m/%d/%Y %H:%M:%S", tm) == 0)
478  return NULL;
479  else
480  return datestr;
481 }
482 
483 
484 
485 #if !defined(WIN32) && !defined(__MINGW32__)
486 /************************************************************************/
498 /*************************************************************************/
499 time_t gk_str2time(char *str)
500 {
501  struct tm time;
502  time_t rtime;
503 
504  memset(&time, '\0', sizeof(time));
505 
506  if (strptime(str, "%m/%d/%Y %H:%M:%S", &time) == NULL)
507  return -1;
508 
509  rtime = mktime(&time);
510  return (rtime < 0 ? 0 : rtime);
511 }
512 #endif
513 
514 
515 /*************************************************************************
516 * This function returns the ID of a particular string based on the
517 * supplied StringMap array
518 **************************************************************************/
519 int gk_GetStringID(gk_StringMap_t *strmap, char *key)
520 {
521  int i;
522 
523  for (i=0; strmap[i].name; i++) {
524  if (gk_strcasecmp(key, strmap[i].name))
525  return strmap[i].id;
526  }
527 
528  return -1;
529 }
regmatch_t
Definition: gkregex.h:434
gtsam.examples.DogLegOptimizerExample.int
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Definition: DogLegOptimizerExample.py:111
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static double rtime
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Definition: string.c:519
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char * gk_strtoupper(char *str)
Converts a string to upper case.
Definition: string.c:328
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Converts a time_t time into a string.
Definition: string.c:470
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Definition: gk_types.h:22
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Definition: gkregex.h:272
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Converts a date/time string into its equivalent time_t value.
Definition: string.c:499
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int gk_strstr_replace(char *str, char *pattern, char *replacement, char *options, char **new_str)
Regex-based search-and-replace function.
Definition: string.c:94
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int gk_strcasecmp(char *s1, char *s2)
Case insensitive string comparison.
Definition: string.c:405
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Definition: string.c:254
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Replaces certain characters in a string.
Definition: string.c:37
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Definition: gkregex.h:268
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