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authorViliam Mateicka <viliam.mateicka@gmail.com>2008-12-16 21:42:34 +0100
committerViliam Mateicka <viliam.mateicka@gmail.com>2008-12-16 21:42:34 +0100
commitc73ebac4af7a3158189ba82c5eb74ae26e2b1106 (patch)
tree32b460ff927e6e15dcdc49b7c886e494514c8f4a /src/archive_api.h
parent01c591fb84dff8c481dc5dc59420300880e37fcc (diff)
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new archive api, input_archive stream
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diff --git a/src/archive_api.h b/src/archive_api.h
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+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2008 Viliam Mateicka <viliam.mateicka@gmail.com>
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * 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 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef MPD_ARCHIVE_API_H
+#define MPD_ARCHIVE_API_H
+
+/*
+ * This is the public API which is used by archive plugins to
+ * provide transparent archive decompression layer for mpd
+ *
+ */
+
+#include "archive_internal.h"
+#include "input_stream.h"
+
+#include <stdbool.h>
+
+struct archive_file;
+
+struct archive_plugin {
+ const char *name;
+
+ /**
+ * optional, set this to NULL if the archive plugin doesn't
+ * have/need one this must false if there is an error and
+ * true otherwise
+ */
+ bool (*init)(void);
+
+ /**
+ * optional, set this to NULL if the archive plugin doesn't
+ * have/need one
+ */
+ void (*finish)(void);
+
+ /**
+ * tryes to open archive file and associates handle with archive
+ * returns pointer to handle used is all operations with this archive
+ * or NULL when opening fails
+ */
+ struct archive_file *(*open)(char * pathname);
+
+ /**
+ * reset routine will move current read index in archive to default
+ * position and then the filenames from archives can be read
+ * via scan_next routine
+ */
+ void (*scan_reset)(struct archive_file *);
+
+ /**
+ * the read method will return corresponding files from archive
+ * (as pathnames) and move read index to next file. When there is no
+ * next file it return NULL.
+ */
+ char *(*scan_next)(struct archive_file *);
+
+ /**
+ * this is used to setup input stream handle, to be able to read
+ * from archive. open method of inputstream can be the used to
+ * extract particular file
+ */
+ void (*setup_stream)(struct archive_file *, struct input_stream *is);
+
+ /**
+ * closes archive file.
+ */
+ void (*close)(struct archive_file *);
+
+ /**
+ * suffixes handled by this plugin.
+ * last element in these arrays must always be a NULL
+ */
+ const char *const*suffixes;
+};
+
+bool archive_lookup(char *pathname, char **archive, char **inpath, char **suffix);
+
+#endif
+