/[pcre]/code/trunk/pcreposix.c
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revision 286 by ph10, Mon Dec 17 14:46:11 2007 UTC revision 359 by ph10, Wed Jul 9 16:20:19 2008 UTC
# Line 6  Line 6 
6  and semantics are as close as possible to those of the Perl 5 language.  and semantics are as close as possible to those of the Perl 5 language.
7    
8                         Written by Philip Hazel                         Written by Philip Hazel
9             Copyright (c) 1997-2007 University of Cambridge             Copyright (c) 1997-2008 University of Cambridge
10    
11  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
12  Redistribution and use in source and binary forms, with or without  Redistribution and use in source and binary forms, with or without
# Line 126  static const int eint[] = { Line 126  static const int eint[] = {
126    REG_BADPAT,  /* (?+ or (?- must be followed by a non-zero number */    REG_BADPAT,  /* (?+ or (?- must be followed by a non-zero number */
127    REG_BADPAT,  /* number is too big */    REG_BADPAT,  /* number is too big */
128    REG_BADPAT,  /* subpattern name expected */    REG_BADPAT,  /* subpattern name expected */
129    REG_BADPAT   /* digit expected after (?+ */    REG_BADPAT,  /* digit expected after (?+ */
130      REG_BADPAT   /* ] is an invalid data character in JavaScript compatibility mode */
131  };  };
132    
133  /* Table of texts corresponding to POSIX error codes */  /* Table of texts corresponding to POSIX error codes */
# Line 159  static const char *const pstring[] = { Line 160  static const char *const pstring[] = {
160  *          Translate error code to string        *  *          Translate error code to string        *
161  *************************************************/  *************************************************/
162    
163  PCREPOSIX_EXP_DEFN size_t  PCREPOSIX_EXP_DEFN size_t PCRE_CALL_CONVENTION
164  regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)  regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)
165  {  {
166  const char *message, *addmessage;  const char *message, *addmessage;
# Line 194  return length + addlength; Line 195  return length + addlength;
195  *           Free store held by a regex           *  *           Free store held by a regex           *
196  *************************************************/  *************************************************/
197    
198  PCREPOSIX_EXP_DEFN void  PCREPOSIX_EXP_DEFN void PCRE_CALL_CONVENTION
199  regfree(regex_t *preg)  regfree(regex_t *preg)
200  {  {
201  (pcre_free)(preg->re_pcre);  (pcre_free)(preg->re_pcre);
# Line 217  Returns:      0 on success Line 218  Returns:      0 on success
218                various non-zero codes on failure                various non-zero codes on failure
219  */  */
220    
221  PCREPOSIX_EXP_DEFN int  PCREPOSIX_EXP_DEFN int PCRE_CALL_CONVENTION
222  regcomp(regex_t *preg, const char *pattern, int cflags)  regcomp(regex_t *preg, const char *pattern, int cflags)
223  {  {
224  const char *errorptr;  const char *errorptr;
# Line 259  If REG_NOSUB was specified at compile ti Line 260  If REG_NOSUB was specified at compile ti
260  be set. When this is the case, the nmatch and pmatch arguments are ignored, and  be set. When this is the case, the nmatch and pmatch arguments are ignored, and
261  the only result is yes/no/error. */  the only result is yes/no/error. */
262    
263  PCREPOSIX_EXP_DEFN int  PCREPOSIX_EXP_DEFN int PCRE_CALL_CONVENTION
264  regexec(const regex_t *preg, const char *string, size_t nmatch,  regexec(const regex_t *preg, const char *string, size_t nmatch,
265    regmatch_t pmatch[], int eflags)    regmatch_t pmatch[], int eflags)
266  {  {
267  int rc;  int rc, so, eo;
268  int options = 0;  int options = 0;
269  int *ovector = NULL;  int *ovector = NULL;
270  int small_ovector[POSIX_MALLOC_THRESHOLD * 3];  int small_ovector[POSIX_MALLOC_THRESHOLD * 3];
# Line 296  else if (nmatch > 0) Line 297  else if (nmatch > 0)
297      }      }
298    }    }
299    
300  rc = pcre_exec((const pcre *)preg->re_pcre, NULL, string, (int)strlen(string),  /* REG_STARTEND is a BSD extension, to allow for non-NUL-terminated strings.
301    The man page from OS X says "REG_STARTEND affects only the location of the
302    string, not how it is matched". That is why the "so" value is used to bump the
303    start location rather than being passed as a PCRE "starting offset". */
304    
305    if ((eflags & REG_STARTEND) != 0)
306      {
307      so = pmatch[0].rm_so;
308      eo = pmatch[0].rm_eo;
309      }
310    else
311      {
312      so = 0;
313      eo = strlen(string);
314      }
315    
316    rc = pcre_exec((const pcre *)preg->re_pcre, NULL, string + so, (eo - so),
317    0, options, ovector, nmatch * 3);    0, options, ovector, nmatch * 3);
318    
319  if (rc == 0) rc = nmatch;    /* All captured slots were filled in */  if (rc == 0) rc = nmatch;    /* All captured slots were filled in */
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