summaryrefslogtreecommitdiff
path: root/css/internal.c
diff options
context:
space:
mode:
Diffstat (limited to 'css/internal.c')
-rw-r--r--css/internal.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/css/internal.c b/css/internal.c
new file mode 100644
index 000000000..fd22af628
--- /dev/null
+++ b/css/internal.c
@@ -0,0 +1,82 @@
+/*
+ * 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/url.h"
+
+/**
+ * URL resolution callback for libcss
+ *
+ * \param pw Resolution context
+ * \param ctx Dictionary to intern result in
+ * \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, lwc_context *ctx,
+ const char *base, lwc_string *rel, lwc_string **abs)
+{
+ lwc_error lerror;
+ char *rel_url, *abs_url, *norm_url;
+ url_func_result res;
+
+ /* Copy relative URL and ensure it's NUL terminated */
+ rel_url = malloc(lwc_string_length(rel) + 1);
+ if (rel_url == NULL)
+ return CSS_NOMEM;
+
+ memcpy(rel_url, lwc_string_data(rel), lwc_string_length(rel));
+ rel_url[lwc_string_length(rel)] = '\0';
+
+ /* Resolve URI */
+ res = url_join(rel_url, base, &abs_url);
+ if (res != URL_FUNC_OK) {
+ free(rel_url);
+ return res == URL_FUNC_NOMEM ? CSS_NOMEM : CSS_INVALID;
+ }
+
+ free(rel_url);
+
+ /* Normalise it */
+ res = url_normalize(abs_url, &norm_url);
+ if (res != URL_FUNC_OK) {
+ free(abs_url);
+ return res == URL_FUNC_NOMEM ? CSS_NOMEM : CSS_INVALID;
+ }
+
+ free(abs_url);
+
+ /* Intern it */
+ lerror = lwc_context_intern(ctx, norm_url, strlen(norm_url), abs);
+ if (lerror != lwc_error_ok) {
+ *abs = NULL;
+ free(norm_url);
+ return lerror == lwc_error_oom ? CSS_NOMEM : CSS_INVALID;
+ }
+
+ free(norm_url);
+
+ return CSS_OK;
+}
+