HTTP file reading helpers

This implements reading and seeking files and streams.

modules/access/http/file.h

+/*****************************************************************************
+ * file.h: HTTP read-only file
+ *****************************************************************************
+ * Copyright (C) 2015 Rémi Denis-Courmont
+ *
+ * This program 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 2.1 of the License, 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.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#include <stdint.h>
+
+struct vlc_http_file;
+struct vlc_http_mgr;
+struct block_t;
+
+struct vlc_http_file *vlc_http_file_create(struct vlc_http_mgr *mgr,
+                                           const char *url, const char *ua,
+                                           const char *ref);
+void vlc_http_file_destroy(struct vlc_http_file *file);
+
+int vlc_http_file_get_status(struct vlc_http_file *file);
+char *vlc_http_file_get_redirect(struct vlc_http_file *file);
+
+uintmax_t vlc_http_file_get_size(struct vlc_http_file *file);
+bool vlc_http_file_can_seek(struct vlc_http_file *file);
+char *vlc_http_file_get_type(struct vlc_http_file *file);
+int vlc_http_file_seek(struct vlc_http_file *file, uint64_t offset);
+struct block_t *vlc_http_file_read(struct vlc_http_file *file);