db_save, state_file: convert to C++

1 files changed, 136 insertions, 0 deletions

diff --git a/src/SongSave.cxx b/src/SongSave.cxx
new file mode 100644
index 00000000..21d073b8
--- /dev/null
+++ b/src/SongSave.cxx
@@ -0,0 +1,136 @@
+/*
+ * 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 "SongSave.hxx"
+#include "song.h"
+#include "TagSave.hxx"
+#include "directory.h"
+
+extern "C" {
+#include "tag.h"
+#include "text_file.h"
+#include "string_util.h"
+}
+
+#include <glib.h>
+
+#include <stdlib.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "song"
+
+#define SONG_MTIME "mtime"
+#define SONG_END "song_end"
+
+static GQuark
+song_save_quark(void)
+{
+	return g_quark_from_static_string("song_save");
+}
+
+void
+song_save(FILE *fp, const struct song *song)
+{
+	fprintf(fp, SONG_BEGIN "%s\n", song->uri);
+
+	if (song->end_ms > 0)
+		fprintf(fp, "Range: %u-%u\n", song->start_ms, song->end_ms);
+	else if (song->start_ms > 0)
+		fprintf(fp, "Range: %u-\n", song->start_ms);
+
+	if (song->tag != NULL)
+		tag_save(fp, song->tag);
+
+	fprintf(fp, SONG_MTIME ": %li\n", (long)song->mtime);
+	fprintf(fp, SONG_END "\n");
+}
+
+struct song *
+song_load(FILE *fp, struct directory *parent, const char *uri,
+	  GString *buffer, GError **error_r)
+{
+	struct song *song = parent != NULL
+		? song_file_new(uri, parent)
+		: song_remote_new(uri);
+	char *line, *colon;
+	enum tag_type type;
+	const char *value;
+
+	while ((line = read_text_line(fp, buffer)) != NULL &&
+	       strcmp(line, SONG_END) != 0) {
+		colon = strchr(line, ':');
+		if (colon == NULL || colon == line) {
+			if (song->tag != NULL)
+				tag_end_add(song->tag);
+			song_free(song);
+
+			g_set_error(error_r, song_save_quark(), 0,
+				    "unknown line in db: %s", line);
+			return NULL;
+		}
+
+		*colon++ = 0;
+		value = strchug_fast_c(colon);
+
+		if ((type = tag_name_parse(line)) != TAG_NUM_OF_ITEM_TYPES) {
+			if (!song->tag) {
+				song->tag = tag_new();
+				tag_begin_add(song->tag);
+			}
+
+			tag_add_item(song->tag, type, value);
+		} else if (strcmp(line, "Time") == 0) {
+			if (!song->tag) {
+				song->tag = tag_new();
+				tag_begin_add(song->tag);
+			}
+
+			song->tag->time = atoi(value);
+		} else if (strcmp(line, "Playlist") == 0) {
+			if (!song->tag) {
+				song->tag = tag_new();
+				tag_begin_add(song->tag);
+			}
+
+			song->tag->has_playlist = strcmp(value, "yes") == 0;
+		} else if (strcmp(line, SONG_MTIME) == 0) {
+			song->mtime = atoi(value);
+		} else if (strcmp(line, "Range") == 0) {
+			char *endptr;
+
+			song->start_ms = strtoul(value, &endptr, 10);
+			if (*endptr == '-')
+				song->end_ms = strtoul(endptr + 1, NULL, 10);
+		} else {
+			if (song->tag != NULL)
+				tag_end_add(song->tag);
+			song_free(song);
+
+			g_set_error(error_r, song_save_quark(), 0,
+				    "unknown line in db: %s", line);
+			return NULL;
+		}
+	}
+
+	if (song->tag != NULL)
+		tag_end_add(song->tag);
+
+	return song;
+}