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Back-patch fix for extraction of fixed prefixes from regular expressions.

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Back-patch of commits 628cbb50ba and
c6aae3042b.  This has been broken since
7.3, so back-patch to all supported branches.
This commit is contained in:
Tom Lane
2012-07-10 18:00:44 -04:00
parent ed45a53730
commit a9287de176
11 changed files with 432 additions and 213 deletions
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4
src/include/regex/regex.h
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@@ -156,6 +156,9 @@ typedef struct
/* two specials for debugging and testing */
#define REG_ATOI 101 /* convert error-code name to number */
#define REG_ITOA 102 /* convert error-code number to name */
/* non-error result codes for pg_regprefix */
#define REG_PREFIX (-1) /* identified a common prefix */
#define REG_EXACT (-2) /* identified an exact match */
@@ -164,6 +167,7 @@ typedef struct
*/
extern int pg_regcomp(regex_t *, const pg_wchar *, size_t, int, Oid);
extern int pg_regexec(regex_t *, const pg_wchar *, size_t, size_t, rm_detail_t *, size_t, regmatch_t[], int);
extern int pg_regprefix(regex_t *, pg_wchar **, size_t *);
extern void pg_regfree(regex_t *);
extern size_t pg_regerror(int, const regex_t *, char *, size_t);
extern void pg_set_regex_collation(Oid collation);