netsurf/css/internal.c

74 lines
1.9 KiB
C

/*
* Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "css/internal.h"
#include "utils/nsurl.h"
/**
* URL resolution callback for libcss
*
* \param pw Resolution context
* \param base Base URI
* \param rel Relative URL
* \param abs Pointer to location to receive resolved URL
* \return CSS_OK on success,
* CSS_NOMEM on memory exhaustion,
* CSS_INVALID if resolution failed.
*/
css_error nscss_resolve_url(void *pw, const char *base,
lwc_string *rel, lwc_string **abs)
{
lwc_error lerror;
nserror error;
nsurl *nsbase;
nsurl *nsabs;
/* Create nsurl from base */
/* TODO: avoid this */
error = nsurl_create(base, &nsbase);
if (error != NSERROR_OK) {
return error == NSERROR_NOMEM ? CSS_NOMEM : CSS_INVALID;
}
/* Resolve URI */
error = nsurl_join(nsbase, lwc_string_data(rel), &nsabs);
if (error != NSERROR_OK) {
nsurl_unref(nsbase);
return error == NSERROR_NOMEM ? CSS_NOMEM : CSS_INVALID;
}
nsurl_unref(nsbase);
/* Intern it */
lerror = lwc_intern_string(nsurl_access(nsabs),
nsurl_length(nsabs), abs);
if (lerror != lwc_error_ok) {
*abs = NULL;
nsurl_unref(nsabs);
return lerror == lwc_error_oom ? CSS_NOMEM : CSS_INVALID;
}
nsurl_unref(nsabs);
return CSS_OK;
}