new examples folder

examples/print_css_urls.c

@@ -0,0 +1,70 @@
+/*
+ * Copyright(c) 2013 Tim Ruehsen
+ *
+ * This file is part of libmget.
+ *
+ * Libmget is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Libmget 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libmget.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Example for CSS parsing using libmget
+ *
+ * Changelog
+ * 14.01.2013  Tim Ruehsen  created
+ *
+ * Demonstrate how to extract URIs from CSS files.
+ * We don't care about character encoding in this example.
+ *
+ */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <unistd.h>
+#include <libmget.h>
+
+static void _css_parse_encoding(void *context G_GNUC_MGET_UNUSED, const char *encoding, size_t len)
+{
+	printf("URI encoding '%.*s'\n", (int)len, encoding);
+}
+
+static void _css_parse_uri(void *context G_GNUC_MGET_UNUSED, const char *url, size_t len, size_t pos G_GNUC_MGET_UNUSED)
+{
+	printf("  %.*s\n", (int)len, url);
+}
+
+static void css_parse_localfile(const char *fname)
+{
+	mget_css_parse_file(fname, _css_parse_uri, _css_parse_encoding, NULL);
+}
+
+int main(int argc, const char *const *argv)
+{
+	if (!isatty(STDIN_FILENO)) {
+		// read CSS data from STDIN
+		css_parse_localfile("-");
+	} else {
+		// parse CSS files given as arguments
+		int argpos;
+
+		for (argpos = 1; argpos < argc; argpos++) {
+			printf("%s:\n", argv[argpos]);
+
+			// use '-' as filename for STDIN
+			css_parse_localfile(argv[argpos]);
+		}
+	}
+
+	return 0;
+}