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/********************************************************************
* $Author: jgoerzen $
* $Revision: 1.5 $
* $Date: 2002/03/19 20:07:16 $
* $Source: /home/jgoerzen/tmp/gopher-umn/gopher/head/object/Regex.c,v $
* $Status: $
*
* Paul Lindner, University of Minnesota CIS.
*
* Copyright 1991, 1992 by the Regents of the University of Minnesota
* see the file "Copyright" in the distribution for conditions of use.
*********************************************************************
* MODULE: Regex.c
* Portable method of doing regular expressions
*********************************************************************
* Revision History:
* $Log: Regex.c,v $
* Revision 1.5 2002/03/19 20:07:16 jgoerzen
* GSgopherobj.c: Moved Regex.h include up.
*
* Regex.c, Regex.h: continuing full rewrites.
*
* Revision 1.4 2002/03/19 19:53:31 jgoerzen
* *** empty log message ***
*
* Revision 1.3 2002/02/12 20:50:21 jgoerzen
* Beginning of MacOS X (Darwin) support.
* Many modifications to Regex.[ch], see debian/changelog for details.
*
* Revision 1.2 2002/02/12 19:54:18 jgoerzen
* Updated with regex fixes
*
* Revision 1.1.1.1 2000/08/19 00:28:56 jgoerzen
* Import from UMN Gopher 2.3.1 after GPLization
*
* Revision 3.2 1994/07/25 13:56:53 lindner
* First crack at POSIX regular expressions
*
* Revision 3.1 1993/10/19 20:48:23 lindner
* Portable versions of Regular expression routines for System V and BSD..
*
*
*********************************************************************/
#define __GOPHER_REGEX_C__
/*
* If you're using gcc on Solaris you might need to copy /usr/include/regexp.h
* to /opt/whatever/regexp.h
*/
#define REGEX_CODEIT /* only include sysv regex code once.. */
#include "config.h"
#include "Regex.h"
#include "Malloc.h"
/**************************************************
POSIX
**************************************************/
#ifdef REGEX_POSIX
regex_t preg;
int pregallocated = 0;
char *posix_re_comp(char *regex) {
if (pregallocated) {
regfree(&preg);
}
pregallocated = 1;
return regcomp(&preg, regex, REG_NOSUB) ? "regcomp error" : NULL;
}
int posix_re_exec(char *string) {
return ! regexec(&preg, string, 0, NULL, 0);
}
#endif /* REGEX_POSIX */
/**************************************************
SYSV
**************************************************/
#ifdef REGEX_SYSV
#define ESIZE 512
static char expbuf[ESIZE];
char *
re_comp(char *expr)
{
char *result;
result = compile(expr, expbuf, &expbuf[ESIZE], '\0');
return(NULL);
}
int
re_exec(char *string)
{
return(step(string, expbuf));
}
#endif /* REGEX_SYSV */
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