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1 files changed, 124 insertions, 0 deletions

diff --git a/src/uri.c b/src/uri.c
new file mode 100644
index 0000000..8a2b744
--- /dev/null
+++ b/src/uri.c
@@ -0,0 +1,124 @@
+/* $Id: uri.c,v 1.1.1.1 2000-02-16 17:32:23 sdyoung Exp $
+ *
+ * This borrows the REGEX from RFC2396 to split a URI string into the five
+ * primary components. The components are:
+ *	scheme		the uri method (like "http", "ftp", "gopher")
+ *	authority	the domain and optional ":" port
+ *	path		path to the document/resource
+ *	query		an optional query (separated with a "?")
+ *	fragment	an optional fragement (separated with a "#")
+ *
+ * Copyright (C) 1999  Robert James Kaes (rjkaes@flarenet.com)
+ *
+ * This program 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; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <defines.h>
+#endif
+
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include "uri.h"
+#include "utils.h"
+#include "log.h"
+#include "regexp.h"
+
+#define NMATCH 10
+
+#define URIPATTERN "^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?"
+
+#define SCHEME        2
+#define AUTHORITY     4
+#define PATH          5
+#define QUERY_MARK    6
+#define QUERY         7
+#define FRAGMENT_MARK 8
+#define FRAGMENT      9
+
+static int extract_uri(regmatch_t pmatch[], const char *buffer, char **section,
+		       int substring)
+{
+	int len = pmatch[substring].rm_eo - pmatch[substring].rm_so;
+	if ((*section = xmalloc(len + 1)) == NULL)
+		return -1;
+
+	memset(*section, '\0', len + 1);
+	memcpy(*section, buffer + pmatch[substring].rm_so, len);
+
+	return 0;
+}
+
+void free_uri(URI * uri)
+{
+	safefree(uri->scheme);
+	safefree(uri->authority);
+	safefree(uri->path);
+	safefree(uri->query);
+	safefree(uri->fragment);
+	safefree(uri);
+}
+
+URI *explode_uri(const char *string)
+{
+	URI *uri;
+	regmatch_t pmatch[NMATCH];
+	regex_t preg;
+
+	if (!(uri = xmalloc(sizeof(URI))))
+		return NULL;
+	memset(uri, 0, sizeof(URI));
+
+	if (regcomp(&preg, URIPATTERN, REG_EXTENDED) != 0) {
+		log("ERROR explode_uri: regcomp");
+		goto ERROR_EXIT;
+	}
+
+	if (regexec(&preg, string, NMATCH, pmatch, 0) != 0) {
+		log("ERROR explode_uri: regexec");
+		goto ERROR_EXIT;
+	}
+
+	regfree(&preg);
+
+	if (pmatch[SCHEME].rm_so != -1) {
+		if (extract_uri(pmatch, string, &uri->scheme, SCHEME) < 0)
+			goto ERROR_EXIT;
+	}
+
+	if (pmatch[AUTHORITY].rm_so != -1) {
+		if (extract_uri(pmatch, string, &uri->authority, AUTHORITY) <
+		    0) goto ERROR_EXIT;
+	}
+
+	if (pmatch[PATH].rm_so != -1) {
+		if (extract_uri(pmatch, string, &uri->path, PATH) < 0)
+			goto ERROR_EXIT;
+	}
+
+	if (pmatch[QUERY_MARK].rm_so != -1) {
+		if (extract_uri(pmatch, string, &uri->query, QUERY) < 0)
+			goto ERROR_EXIT;
+	}
+
+	if (pmatch[FRAGMENT_MARK].rm_so != -1) {
+		if (extract_uri(pmatch, string, &uri->fragment, FRAGMENT) < 0)
+			goto ERROR_EXIT;
+	}
+
+	return uri;
+
+      ERROR_EXIT:
+	free_uri(uri);
+	return NULL;
+}