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/***************************************************************************/
/* This code is part of WWW grabber called pavuk */
/* Copyright (c) 1997 - 2001 Stefan Ondrejicka */
/* Distributed under GPL 2 or later */
/***************************************************************************/
#include <string.h>
#include <stdlib.h>
#include "config.h"
#include "jstrans.h"
#include "tools.h"
#ifdef HAVE_REGEX
void js_transform_free(js_transform_t *jt)
{
re_free(jt->re);
_free(jt->transform);
_free(jt->tag);
_free(jt->attrib);
_free(jt);
}
js_transform_t *js_transform_new(const char *pattern, const char *transform,
const char *tag, const char *attrib, int type)
{
js_transform_t *rv;
re_entry *re;
if(!pattern || !transform || !tag || !attrib || !*pattern || !*transform)
return NULL;
re = re_make(pattern);
if(!re)
return NULL;
rv = _malloc(sizeof(js_transform_t));
rv->type = type;
rv->re = re;
rv->transform = tl_strdup(transform);
rv->tag = tl_strdup(tag);
rv->attrib = tl_strdup(attrib);
return rv;
}
int js_transform_match_tag(js_transform_t *jt, const char *tag)
{
int l;
if(jt->tag[0] == '*')
return TRUE;
l = strcspn(tag + 1, " \t\r\n>");
if(!strncasecmp(tag + 1, jt->tag, l) && (l == strlen(jt->tag)))
return TRUE;
return FALSE;
}
char *js_transform_apply(js_transform_t *jt, const char *attr, int nsub,
int *subs)
{
char *rv;
int n, l;
l = strcspn(jt->transform, "$");
rv = tl_strndup(jt->transform, l);
do
{
if(jt->transform[l] == '$')
{
n = atoi(jt->transform + l + 1);
if(n <= nsub)
{
rv = tl_str_nappend(rv, attr + subs[2 * n],
subs[2 * n + 1] - subs[2 * n]);
}
l += 1 + strspn(jt->transform + l + 1, "0123456789");
}
n = strcspn(jt->transform + l, "$");
rv = tl_str_nappend(rv, jt->transform + l, n);
l += n;
}
while(jt->transform[l]);
return rv;
}
#endif
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