Attached is a pacth against 7.2 which adds locale awareness to the
character classes of the regular expression engine. Please consider
including this feature to postgreSQL.
Regards,
Manuel.
*** src/backend/regex/regcomp.c.org Sun Mar 17 16:39:13 2002
--- src/backend/regex/regcomp.c Sun Mar 17 16:53:43 2002
***************
*** 47,53 ****
--- 47,64 ----
#include "regex/regex.h"
#include "regex/utils.h"
#include "regex/regex2.h"
+ #ifdef USE_LOCALE
+ struct cclass
+ {
+ char *name;
+ char *chars;
+ char *multis;
+ };
+ static struct cclass* cclasses = NULL;
+ static struct cclass* cclass_init(void);
+ #else
#include "regex/cclass.h"
+ #endif /* USE_LOCALE */
#include "regex/cname.h"
/*
***************
*** 174,179 ****
--- 185,195 ----
pg_wchar *wcp;
#endif
+ #ifdef USE_LOCALE
+ if ( cclasses == NULL )
+ cclasses = cclass_init();
+ #endif /* USE_LOCALE */
+
#ifdef REDEBUG
#define GOODFLAGS(f) (f)
#else
***************
*** 884,890 ****
struct cclass *cp;
size_t len;
char *u;
! char c;
while (MORE() && pg_isalpha(PEEK()))
NEXT();
--- 900,906 ----
struct cclass *cp;
size_t len;
char *u;
! unsigned char c;
while (MORE() && pg_isalpha(PEEK()))
NEXT();
***************
*** 905,911 ****
u = cp->chars;
while ((c = *u++) != '\0')
! CHadd(cs, c);
for (u = cp->multis; *u != '\0'; u += strlen(u) + 1)
MCadd(p, cs, u);
}
--- 921,927 ----
u = cp->chars;
while ((c = *u++) != '\0')
! CHadd(cs, c);
for (u = cp->multis; *u != '\0'; u += strlen(u) + 1)
MCadd(p, cs, u);
}
***************
*** 1716,1718 ****
--- 1732,1796 ----
return (islower((unsigned char) c));
#endif
}
+
+ #ifdef USE_LOCALE
+ static struct cclass *
+ cclass_init(void)
+ {
+ struct cclass *cp = NULL;
+ struct cclass *classes = NULL;
+ struct cclass_factory
+ {
+ char *name;
+ int (*func)(int);
+ char *chars;
+ } cclass_factories [] =
+ {
+ { "alnum", isalnum, NULL },
+ { "alpha", isalpha, NULL },
+ { "blank", NULL, " \t" },
+ { "cntrl", iscntrl, NULL },
+ { "digit", NULL, "0123456789" },
+ { "graph", isgraph, NULL },
+ { "lower", islower, NULL },
+ { "print", isprint, NULL },
+ { "punct", ispunct, NULL },
+ { "space", NULL, "\t\n\v\f\r " },
+ { "upper", isupper, NULL },
+ { "xdigit", isxdigit, NULL },
+ { NULL, NULL, NULL }
+ };
+ struct cclass_factory *cf = NULL;
+
+ classes = malloc(sizeof(struct cclass) * (sizeof(cclass_factories) / sizeof(struct cclass_factory)));
+ if (classes == NULL)
+ elog(ERROR,"cclass_init: out of memory");
+
+ cp = classes;
+ for(cf = cclass_factories; cf->name != NULL; cf++)
+ {
+ cp->name = strdup(cf->name);
+ if ( cf->chars )
+ cp->chars = strdup(cf->chars);
+ else
+ {
+ int x = 0, y = 0;
+ cp->chars = malloc(sizeof(char) * 256);
+ if (cp->chars == NULL)
+ elog(ERROR,"cclass_init: out of memory");
+ for (x = 0; x < 256; x++)
+ {
+ if((cf->func)(x))
+ *(cp->chars + y++) = x;
+ }
+ *(cp->chars + y) = '\0';
+ }
+ cp->multis = "";
+ cp++;
+ }
+ cp->name = cp->chars = NULL;
+ cp->multis = "";
+
+ return classes;
+ }
+ #endif /* USE_LOCALE */
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