internal.c

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/*
 * 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 <libcss/libcss.h>
 
#include "utils/nsurl.h"
 
#include "css/internal.h"
 
/* exported interface documented in content/handlers/css/internal.h */
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;
}