83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
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/*
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* Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include "css/internal.h"
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#include "utils/url.h"
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/**
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* URL resolution callback for libcss
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*
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* \param pw Resolution context
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* \param ctx Dictionary to intern result in
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* \param base Base URI
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* \param rel Relative URL
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* \param abs Pointer to location to receive resolved URL
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* \return CSS_OK on success,
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* CSS_NOMEM on memory exhaustion,
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* CSS_INVALID if resolution failed.
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*/
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css_error nscss_resolve_url(void *pw, lwc_context *ctx,
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const char *base, lwc_string *rel, lwc_string **abs)
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{
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lwc_error lerror;
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char *rel_url, *abs_url, *norm_url;
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url_func_result res;
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/* Copy relative URL and ensure it's NUL terminated */
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rel_url = malloc(lwc_string_length(rel) + 1);
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if (rel_url == NULL)
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return CSS_NOMEM;
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memcpy(rel_url, lwc_string_data(rel), lwc_string_length(rel));
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rel_url[lwc_string_length(rel)] = '\0';
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/* Resolve URI */
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res = url_join(rel_url, base, &abs_url);
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if (res != URL_FUNC_OK) {
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free(rel_url);
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return res == URL_FUNC_NOMEM ? CSS_NOMEM : CSS_INVALID;
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}
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free(rel_url);
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/* Normalise it */
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res = url_normalize(abs_url, &norm_url);
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if (res != URL_FUNC_OK) {
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free(abs_url);
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return res == URL_FUNC_NOMEM ? CSS_NOMEM : CSS_INVALID;
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}
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free(abs_url);
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/* Intern it */
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lerror = lwc_context_intern(ctx, norm_url, strlen(norm_url), abs);
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if (lerror != lwc_error_ok) {
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*abs = NULL;
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free(norm_url);
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return lerror == lwc_error_oom ? CSS_NOMEM : CSS_INVALID;
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}
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free(norm_url);
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return CSS_OK;
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}
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