Add xdg mime support on Linux.

base/third_party/xdg_mime/xdgmime.h

Index: base/third_party/xdg_mime/xdgmime.h
===================================================================
--- base/third_party/xdg_mime/xdgmime.h	(revision 0)
+++ base/third_party/xdg_mime/xdgmime.h	(revision 0)
@@ -0,0 +1,127 @@
+/* -*- mode: C; c-file-style: "gnu" -*- */
+/* xdgmime.h: XDG Mime Spec mime resolver.  Based on version 0.11 of the spec.
+ *
+ * More info can be found at http://www.freedesktop.org/standards/
+ * 
+ * Copyright (C) 2003  Red Hat, Inc.
+ * Copyright (C) 2003  Jonathan Blandford <jrb@alum.mit.edu>
+ *
+ * Licensed under the Academic Free License version 2.0
+ * Or under the following terms:
+ * 
+ * This library 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 2 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __XDG_MIME_H__
+#define __XDG_MIME_H__
+
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#ifdef XDG_PREFIX
+#define XDG_ENTRY(func) _XDG_ENTRY2(XDG_PREFIX,func)
+#define _XDG_ENTRY2(prefix,func) _XDG_ENTRY3(prefix,func)
+#define _XDG_ENTRY3(prefix,func) prefix##_##func
+
+#define XDG_RESERVED_ENTRY(func) _XDG_RESERVED_ENTRY2(XDG_PREFIX,func)
+#define _XDG_RESERVED_ENTRY2(prefix,func) _XDG_RESERVED_ENTRY3(prefix,func)
+#define _XDG_RESERVED_ENTRY3(prefix,func) _##prefix##_##func
+#endif
+
+typedef void (*XdgMimeCallback) (void *user_data);
+typedef void (*XdgMimeDestroy)  (void *user_data);
+
+  
+#ifdef XDG_PREFIX
+#define xdg_mime_get_mime_type_for_data       XDG_ENTRY(get_mime_type_for_data)
+#define xdg_mime_get_mime_type_for_file       XDG_ENTRY(get_mime_type_for_file)
+#define xdg_mime_get_mime_type_from_file_name XDG_ENTRY(get_mime_type_from_file_name)
+#define xdg_mime_get_mime_types_from_file_name XDG_ENTRY(get_mime_types_from_file_name)
+#define xdg_mime_is_valid_mime_type           XDG_ENTRY(is_valid_mime_type)
+#define xdg_mime_mime_type_equal              XDG_ENTRY(mime_type_equal)
+#define xdg_mime_media_type_equal             XDG_ENTRY(media_type_equal)
+#define xdg_mime_mime_type_subclass           XDG_ENTRY(mime_type_subclass)
+#define xdg_mime_get_mime_parents             XDG_ENTRY(get_mime_parents)
+#define xdg_mime_list_mime_parents            XDG_ENTRY(list_mime_parents)
+#define xdg_mime_unalias_mime_type            XDG_ENTRY(unalias_mime_type)
+#define xdg_mime_get_max_buffer_extents       XDG_ENTRY(get_max_buffer_extents)
+#define xdg_mime_shutdown                     XDG_ENTRY(shutdown)
+#define xdg_mime_dump                         XDG_ENTRY(dump)
+#define xdg_mime_register_reload_callback     XDG_ENTRY(register_reload_callback)
+#define xdg_mime_remove_callback              XDG_ENTRY(remove_callback)
+#define xdg_mime_type_unknown                 XDG_ENTRY(type_unknown)
+#define xdg_mime_get_icon                     XDG_ENTRY(get_icon)
+#define xdg_mime_get_generic_icon             XDG_ENTRY(get_generic_icon)
+
+#define _xdg_mime_mime_type_equal             XDG_RESERVED_ENTRY(mime_type_equal)
+#define _xdg_mime_mime_type_subclass          XDG_RESERVED_ENTRY(mime_type_subclass)
+#define _xdg_mime_unalias_mime_type           XDG_RESERVED_ENTRY(unalias_mime_type)  
+#endif
+
+extern const char xdg_mime_type_unknown[];
+#define XDG_MIME_TYPE_UNKNOWN xdg_mime_type_unknown
+
+const char  *xdg_mime_get_mime_type_for_data       (const void *data,
+						    size_t      len,
+						    int        *result_prio);
+const char  *xdg_mime_get_mime_type_for_file       (const char *file_name,
+                                                    struct stat *statbuf);
+const char  *xdg_mime_get_mime_type_from_file_name (const char *file_name);
+int          xdg_mime_get_mime_types_from_file_name(const char *file_name,
+						    const char *mime_types[],
+						    int         n_mime_types);
+int          xdg_mime_is_valid_mime_type           (const char *mime_type);
+int          xdg_mime_mime_type_equal              (const char *mime_a,
+						    const char *mime_b);
+int          xdg_mime_media_type_equal             (const char *mime_a,
+						    const char *mime_b);
+int          xdg_mime_mime_type_subclass           (const char *mime_a,
+						    const char *mime_b);
+  /* xdg_mime_get_mime_parents() is deprecated since it does
+   * not work correctly with caches. Use xdg_mime_list_parents() 
+   * instead, but notice that that function expects you to free
+   * the array it returns. 
+   */
+const char **xdg_mime_get_mime_parents		   (const char *mime);
+char **      xdg_mime_list_mime_parents		   (const char *mime);
+const char  *xdg_mime_unalias_mime_type		   (const char *mime);
+const char  *xdg_mime_get_icon                     (const char *mime);
+const char  *xdg_mime_get_generic_icon             (const char *mime);
+int          xdg_mime_get_max_buffer_extents       (void);
+void         xdg_mime_shutdown                     (void);
+void         xdg_mime_dump                         (void);
+int          xdg_mime_register_reload_callback     (XdgMimeCallback  callback,
+						    void            *data,
+						    XdgMimeDestroy   destroy);
+void         xdg_mime_remove_callback              (int              callback_id);
+
+   /* Private versions of functions that don't call xdg_mime_init () */
+int          _xdg_mime_mime_type_equal             (const char *mime_a,
+						    const char *mime_b);
+int          _xdg_mime_mime_type_subclass          (const char *mime,
+						    const char *base);
+const char  *_xdg_mime_unalias_mime_type           (const char *mime);
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __XDG_MIME_H__ */