char *
pcre_subst(const pcre *ppat, const pcre_extra *extra, const char *str, int len,
int offset, int options, const char *rep)
{
int nmat;
int ovec[MAXCAPTURE * 3];
nmat = pcre_exec(ppat, extra, str, len, offset, options,
ovec, sizeof(ovec));
#ifdef DEBUG_PCRE_SUBST
dumpmatch(str, len, rep, nmat, ovec);
#endif
if (nmat <= 0)
return NULL;
return(edit(str, len, rep, nmat, ovec));
}
char *
regexp_replace(char * from, char *to, char *text)
{
int nmat, offset = 0, textlen;
int ovec[MAXCAPTURE];
char *res, *ret, *pom;
const char *overfl = NULL; /* warning, go away */
int global, i;
#ifdef HAVE_PCRE
const char *er_ptr;
int erroffset;
#else
regmatch_t pmat[MAXCAPTURE/3];
regex_t ppat_data;
regex_t *ppat;
#endif
if( from == NULL || to == NULL || text == NULL)
{
if(text == NULL) return NULL;
ret = (unsigned char *)js_mem_alloc(strlen(text)+1);
strcpy(ret,text);
return ret;
}
while(*from == ' ' || *from == '\t') from++;
#ifdef HAVE_PCRE
pom = pcre_malloc(strlen(from)+1);
#else /* HAVE_PCRE */
pom = mem_alloc(strlen(from)+1);
#endif /* HAVE_PCRE */
if(*from != '/')
{
strcpy(pom, from);
global = 0;
}
else
{
for( i = strlen(from)-1; i > 1 && (from[i] == ' ' || from[i] == '\t'); i--);
if( from[i] == '/')
{
strncpy(pom, from+1, i-1);
pom[i-1] = '\0';
global = 0;
}else if( i > 1 && from[i] == 'g' && from[i-1] == '/')
{
strncpy(pom, from+1, i-2);
pom[i-2] = '\0';
global = 1;
}else
{
strncpy(pom, from, i+1);
pom[i+1] = '\0';
global = 0;
}
}
#ifdef REGEX_DEBUG
printf("Search pattern is '%s', global = %d\n",pom,global);
#endif /* REGEX_DEBUG */
#ifdef HAVE_PCRE
pcre *ppat = pcre_compile(pom, 0/*PCRE_ANCHORED*/, &er_ptr, &erroffset, NULL);
pcre_free(pom);
#else /* HAVE_PCRE */
ppat = &ppat_data;
if (regcomp(ppat, pom, REG_EXTENDED)) ppat = NULL;
mem_free(pom);
#endif /* HAVE_PCRE */
if (ppat == NULL)
{
if(text == NULL) return NULL;
ret = (unsigned char *)js_mem_alloc(strlen(text)+1);
strcpy(ret,text);
return ret;
}
textlen = strlen(text);
#ifdef HAVE_PCRE
res = pcre_malloc(MAXCAPTURE+textlen);
#else /* HAVE_PCRE */
res = mem_alloc(MAXCAPTURE+textlen);
#endif /* HAVE_PCRE */
cp = res;
ep = res+MAXCAPTURE+textlen;
if(global)
{
do {
#ifdef HAVE_PCRE
nmat = pcre_exec(ppat, NULL, text, textlen, offset, 0, ovec, sizeof(ovec)/sizeof(int));
#else /* HAVE_PCRE */
if (regexec(ppat, text+offset, MAXCAPTURE/3, pmat, 0))
nmat = 0;
else
for( nmat = 0; nmat < MAXCAPTURE/3; nmat++ )
if((ovec[nmat<<1] = pmat[nmat].rm_so) == -1 ||
(ovec[(nmat<<1)+1] = pmat[nmat].rm_eo) == -1) break;
#endif /* HAVE_PCRE */
#ifdef HAVE_PCRE
for(i = 0; i < nmat*2; i++)
ovec[i]-=offset;
#endif /* HAVE_PCRE */
#ifdef REGEX_DEBUG
dumpmatch(text+offset, textlen-offset, to, nmat, ovec);
#endif /* REGEX_DEBUG */
if(nmat > 0)
{
overfl = edit(text+offset, textlen - offset, to, nmat, ovec, res);
offset += ovec[1];
}
} while (nmat >0 && overfl);
}
else
{
#ifdef HAVE_PCRE
nmat = pcre_exec(ppat, NULL, text, textlen, 0, 0, ovec, sizeof(ovec)/sizeof(int));
#else /* HAVE_PCRE */
if (regexec(ppat, text, MAXCAPTURE/3, pmat, 0))
nmat = 0;
else
for( nmat = 0; nmat < MAXCAPTURE/3; nmat++ )
if((ovec[nmat<<1] = pmat[nmat].rm_so) == -1 ||
(ovec[(nmat<<1)+1] = pmat[nmat].rm_eo) == -1) break;
#endif /* HAVE_PCRE */
#ifdef REGEX_DEBUG
dumpmatch(text+offset, textlen-offset, to, nmat, ovec);
#endif /* REGEX_DEBUG */
if(nmat > 0)
{
overfl = edit(text+offset, textlen - offset, to, nmat, ovec, res);
offset += ovec[1];
}
}
if ( textlen >= offset && cp + textlen - offset < ep)
{
strncpy(cp, text+offset, textlen - offset);
*(cp +textlen - offset) = '\0';
}
else
*(ep-1) = '\0';
ret = (unsigned char *)js_mem_alloc(strlen(res)+1);
strcpy(ret,res);
#ifdef HAVE_PCRE
pcre_free(res);
pcre_free(ppat);
#else /* HAVE_PCRE */
mem_free(res);
regfree(ppat);
#endif /* HAVE_PCRE */
return ret;
}
