archive: added a C header for each plugin

Moved the archive plugin "extern" declarations into each plugin
header.

Makefile.am

@@ -198,6 +198,9 @@ mpd_headers = \
 	src/archive_internal.h \
 	src/archive_list.h \
 	src/archive_plugin.h \
+	src/archive/bz2_archive_plugin.h \
+	src/archive/iso9660_archive_plugin.h \
+	src/archive/zzip_archive_plugin.h \
 	src/input/archive_input_plugin.h \
 	src/cue/cue_tag.h
 

src/archive/bz2_archive_plugin.c

@@ -22,6 +22,7 @@
   */
 
 #include "config.h"
+#include "archive/bz2_archive_plugin.h"
 #include "archive_api.h"
 #include "input_plugin.h"
 

src/archive/bz2_archive_plugin.h

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_ARCHIVE_BZ2_H
+#define MPD_ARCHIVE_BZ2_H
+
+extern const struct archive_plugin bz2_archive_plugin;
+
+#endif

src/archive/iso9660_archive_plugin.c

@@ -22,6 +22,7 @@
   */
 
 #include "config.h"
+#include "archive/iso9660_archive_plugin.h"
 #include "archive_api.h"
 #include "input_plugin.h"
 

src/archive/iso9660_archive_plugin.h

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_ARCHIVE_ISO9660_H
+#define MPD_ARCHIVE_ISO9660_H
+
+extern const struct archive_plugin iso9660_archive_plugin;
+
+#endif

src/archive/zzip_archive_plugin.c

@@ -22,6 +22,7 @@
   */
 
 #include "config.h"
+#include "archive/zzip_archive_plugin.h"
 #include "archive_api.h"
 #include "archive_api.h"
 #include "input_plugin.h"

src/archive/zzip_archive_plugin.h

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_ARCHIVE_ZZIP_H
+#define MPD_ARCHIVE_ZZIP_H
+
+extern const struct archive_plugin zzip_archive_plugin;
+
+#endif

src/archive_list.c

@@ -21,14 +21,13 @@
 #include "archive_list.h"
 #include "archive_plugin.h"
 #include "utils.h"
+#include "archive/bz2_archive_plugin.h"
+#include "archive/iso9660_archive_plugin.h"
+#include "archive/zzip_archive_plugin.h"
 
 #include <string.h>
 #include <glib.h>
 
-extern const struct archive_plugin bz2_archive_plugin;
-extern const struct archive_plugin zzip_archive_plugin;
-extern const struct archive_plugin iso9660_archive_plugin;
-
 static const struct archive_plugin *const archive_plugins[] = {
 #ifdef HAVE_BZ2
 	&bz2_archive_plugin,