test/visit_archive: new debug program

Makefile.am

@@ -1038,6 +1038,10 @@ noinst_PROGRAMS = \
 	test/run_normalize \
 	test/software_volume
 
+if ENABLE_ARCHIVE
+noinst_PROGRAMS += test/visit_archive
+endif
+
 if HAVE_ID3TAG
 noinst_PROGRAMS += test/dump_rva2
 endif
@@ -1089,6 +1093,28 @@ test_run_input_SOURCES = test/run_input.cxx \
 	src/uri.c \
 	src/fd_util.c
 
+if ENABLE_ARCHIVE
+
+test_visit_archive_LDADD = \
+	$(INPUT_LIBS) \
+	$(ARCHIVE_LIBS) \
+	libevent.a \
+	libfs.a \
+	$(GLIB_LIBS)
+test_visit_archive_SOURCES = test/visit_archive.cxx \
+	src/IOThread.cxx \
+	src/InputStream.cxx \
+	src/ConfigFile.cxx src/tokenizer.c src/utils.c src/string_util.c \
+	src/Tag.cxx src/TagNames.c src/TagPool.cxx \
+	src/uri.c \
+	src/fd_util.c
+
+if ENABLE_DESPOTIFY
+test_visit_archive_SOURCES += src/DespotifyUtils.cxx
+endif
+
+endif
+
 test_dump_text_file_LDADD = \
 	$(INPUT_LIBS) \
 	$(ARCHIVE_LIBS) \

test/visit_archive.cxx

@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2003-2013 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.
+ */
+
+#include "config.h"
+#include "stdbin.h"
+#include "tag.h"
+#include "conf.h"
+#include "IOThread.hxx"
+#include "InputInit.hxx"
+#include "ArchiveList.hxx"
+#include "ArchivePlugin.hxx"
+#include "ArchiveVisitor.hxx"
+#include "fs/Path.hxx"
+
+#include <glib.h>
+
+#include <unistd.h>
+#include <stdlib.h>
+
+static void
+my_log_func(const gchar *log_domain, G_GNUC_UNUSED GLogLevelFlags log_level,
+	    const gchar *message, G_GNUC_UNUSED gpointer user_data)
+{
+	if (log_domain != NULL)
+		g_printerr("%s: %s\n", log_domain, message);
+	else
+		g_printerr("%s\n", message);
+}
+
+class MyArchiveVisitor final : public ArchiveVisitor {
+ public:
+	virtual void VisitArchiveEntry(const char *path_utf8) override {
+		printf("%s\n", path_utf8);
+	}
+};
+
+int
+main(int argc, char **argv)
+{
+	GError *error = nullptr;
+
+	if (argc != 3) {
+		fprintf(stderr, "Usage: visit_archive PLUGIN PATH\n");
+		return EXIT_FAILURE;
+	}
+
+	const char *plugin_name = argv[1];
+	const Path path = Path::FromFS(argv[2]);
+
+	/* initialize GLib */
+
+	g_thread_init(NULL);
+	g_log_set_default_handler(my_log_func, NULL);
+
+	/* initialize MPD */
+
+	config_global_init();
+
+	io_thread_init();
+	if (!io_thread_start(&error)) {
+		g_warning("%s", error->message);
+		g_error_free(error);
+		return EXIT_FAILURE;
+	}
+
+	archive_plugin_init_all();
+
+	if (!input_stream_global_init(&error)) {
+		g_warning("%s", error->message);
+		g_error_free(error);
+		return 2;
+	}
+
+	/* open the archive and dump it */
+
+	const archive_plugin *plugin = archive_plugin_from_name(plugin_name);
+	if (plugin == nullptr) {
+		fprintf(stderr, "No such plugin: %s\n", plugin_name);
+		return EXIT_FAILURE;
+	}
+
+	int result = EXIT_SUCCESS;
+
+	archive_file *file = archive_file_open(plugin, path.c_str(), &error);
+	if (file != nullptr) {
+		MyArchiveVisitor visitor;
+		archive_file_visit(file, visitor);
+	} else {
+		fprintf(stderr, "%s\n", error->message);
+		g_error_free(error);
+		result = EXIT_FAILURE;
+	}
+
+	/* deinitialize everything */
+
+	input_stream_global_finish();
+
+	archive_plugin_deinit_all();
+
+	io_thread_deinit();
+
+	config_global_finish();
+
+	return result;
+}