Support Metalink.

This change adds experimental Metalink support to curl.
To enable Metalink support, run configure with --with-libmetalink.
To feed Metalink file to curl, use --metalink option like this:

  $ curl -O --metalink foo.metalink

We use libmetalink to parse Metalink files.

1 files changed, 54 insertions, 0 deletions

diff --git a/src/tool_metalink.h b/src/tool_metalink.h
new file mode 100644
index 000000000..c8534503a
--- /dev/null
+++ b/src/tool_metalink.h
@@ -0,0 +1,54 @@
+#ifndef HEADER_CURL_TOOL_METALINK_H
+#define HEADER_CURL_TOOL_METALINK_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include "tool_setup.h"
+
+#include <metalink/metalink_parser.h>
+
+#include "tool_cfgable.h"
+
+struct metalinkfile {
+  struct metalinkfile *next;
+  metalink_file_t *file;
+};
+
+struct metalink {
+  struct metalink *next;
+  metalink_t* metalink;
+};
+
+struct metalinkfile *new_metalinkfile(metalink_file_t *metalinkfile);
+
+struct metalink *new_metalink(metalink_t *metalink);
+
+int operatemetalink(CURL *curl,
+                    struct getout *urlnode,
+                    long retry_sleep_default,
+                    struct OutStruct outs,
+                    struct OutStruct heads,
+                    char *outfiles,
+                    struct Configurable *config);
+
+void clean_metalink(struct Configurable *config);
+
+#endif /* HEADER_CURL_TOOL_METALINK_H */