Build tags from information in cue sheets

With these methods a tag struct can be created
from the cdtext information in a cue sheet.
The methods depend on a cue parsing library.
Reading from strings (char*) as well as from
a file (FILE*) is supported.

2 files changed, 296 insertions, 0 deletions

diff --git a/src/cue/cue_tag.c b/src/cue/cue_tag.c
new file mode 100644
index 000000000..ce8202a81
--- /dev/null
+++ b/src/cue/cue_tag.c
@@ -0,0 +1,276 @@
+#include "cue_tag.h"
+
+static struct tag*
+cue_tag_cd(struct Cdtext* cdtext, struct Rem* rem)
+{
+	char* tmp = NULL;
+	struct tag* tag = NULL;
+
+	//if (cdtext == NULL)
+		//return NULL;
+
+	tag = tag_new();
+
+	tag_begin_add(tag);
+
+	{ /* TAG_ITEM_ALBUM_ARTIST */
+	if ((tmp = cdtext_get(PTI_PERFORMER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ALBUM_ARTIST, tmp);
+
+	else if ((tmp = cdtext_get(PTI_SONGWRITER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ALBUM_ARTIST, tmp);
+
+	else if ((tmp = cdtext_get(PTI_COMPOSER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ALBUM_ARTIST, tmp);
+
+	else if ((tmp = cdtext_get(PTI_ARRANGER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ALBUM_ARTIST, tmp);
+	/* TAG_ITEM_ALBUM_ARTIST */ }
+
+	{ /* TAG_ITEM_ARTIST */
+	if ((tmp = cdtext_get(PTI_PERFORMER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ARTIST, tmp);
+
+	else if ((tmp = cdtext_get(PTI_SONGWRITER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ARTIST, tmp);
+
+	else if ((tmp = cdtext_get(PTI_COMPOSER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ARTIST, tmp);
+
+	else if ((tmp = cdtext_get(PTI_ARRANGER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ARTIST, tmp);
+	/* TAG_ITEM_ARTIST */ }
+
+	/* TAG_ITEM_PERFORMER */
+	if ((tmp = cdtext_get(PTI_PERFORMER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_PERFORMER, tmp);
+
+	/* TAG_ITEM_COMPOSER */
+	if ((tmp = cdtext_get(PTI_COMPOSER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_COMPOSER, tmp);
+
+	/* TAG_ITEM_ALBUM */
+	if ((tmp = cdtext_get(PTI_TITLE, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ALBUM, tmp);
+
+	/* TAG_ITEM_GENRE */
+	if ((tmp = cdtext_get(PTI_GENRE, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_GENRE, tmp);
+
+	/* TAG_ITEM_DATE */
+	if ((tmp = rem_get(REM_DATE, rem)) != NULL)
+		tag_add_item(tag, TAG_ITEM_DATE, tmp);
+
+	/* TAG_ITEM_COMMENT */
+	if ((tmp = cdtext_get(PTI_MESSAGE, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_COMMENT, tmp);
+
+	/* TAG_ITEM_DISC */
+	if ((tmp = cdtext_get(PTI_DISC_ID, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_DISC, tmp);
+
+	/* stream name, usually empty
+	 * tag_add_item(tag, TAG_ITEM_NAME,);
+	 */
+
+	/* REM MUSICBRAINZ entry?
+	tag_add_item(tag, TAG_MUSICBRAINZ_ARTISTID,);
+	tag_add_item(tag, TAG_MUSICBRAINZ_ALBUMID,);
+	tag_add_item(tag, TAG_MUSICBRAINZ_ALBUMARTISTID,);
+	tag_add_item(tag, TAG_MUSICBRAINZ_TRACKID,);
+	*/
+
+	tag_end_add(tag);
+
+	if (tag != NULL)
+	{
+		if (tag_is_empty(tag))
+		{
+			tag_free(tag);
+			return NULL;
+		}
+		else
+			return tag;
+	}
+	else
+		return NULL;
+}
+
+static struct tag*
+cue_tag_track(struct Cdtext* cdtext, struct Rem* rem)
+{
+	char* tmp = NULL;
+	struct tag* tag = NULL;
+
+	//if (cdtext == NULL)
+		//return NULL;
+
+	tag = tag_new();
+
+	tag_begin_add(tag);
+
+	{ /* TAG_ITEM_ARTIST */
+	if ((tmp = cdtext_get(PTI_PERFORMER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ARTIST, tmp);
+
+	else if ((tmp = cdtext_get(PTI_SONGWRITER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ARTIST, tmp);
+
+	else if ((tmp = cdtext_get(PTI_COMPOSER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ARTIST, tmp);
+
+	else if ((tmp = cdtext_get(PTI_ARRANGER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_ARTIST, tmp);
+	/* TAG_ITEM_ARTIST */ }
+
+	/* TAG_ITEM_TITLE */
+	if ((tmp = cdtext_get(PTI_TITLE, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_TITLE, tmp);
+
+	/* TAG_ITEM_GENRE */
+	if ((tmp = cdtext_get(PTI_GENRE, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_GENRE, tmp);
+
+	/* TAG_ITEM_DATE */
+	if ((tmp = rem_get(REM_DATE, rem)) != NULL)
+		tag_add_item(tag, TAG_ITEM_DATE, tmp);
+
+	/* TAG_ITEM_COMPOSER */
+	if ((tmp = cdtext_get(PTI_COMPOSER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_COMPOSER, tmp);
+
+	/* TAG_ITEM_PERFORMER */
+	if ((tmp = cdtext_get(PTI_PERFORMER, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_PERFORMER, tmp);
+
+	/* TAG_ITEM_COMMENT */
+	if ((tmp = cdtext_get(PTI_MESSAGE, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_COMMENT, tmp);
+
+	/* TAG_ITEM_DISC */
+	if ((tmp = cdtext_get(PTI_DISC_ID, cdtext)) != NULL)
+		tag_add_item(tag, TAG_ITEM_DISC, tmp);
+
+	tag_end_add(tag);
+
+	if (tag != NULL)
+	{
+		if (tag_is_empty(tag))
+		{
+			tag_free(tag);
+			return NULL;
+		}
+		else
+			return tag;
+	}
+	else
+		return NULL;
+}
+
+struct tag*
+cue_tag_file(	FILE* fp,
+		const unsigned int tnum)
+{
+	struct tag* cd_tag = NULL;
+	struct tag* track_tag = NULL;
+	struct tag* merge_tag = NULL;
+	struct Cd* cd = NULL;
+
+	if (tnum > 256)
+		return NULL;
+
+	if (fp == NULL)
+		return NULL;
+	else
+		cd = cue_parse_file(fp);
+
+	if (cd == NULL)
+		return NULL;
+	else
+	{
+		/* tag from CDtext info */
+		cd_tag = cue_tag_cd(	cd_get_cdtext(cd),
+					cd_get_rem(cd));
+
+		/* tag from TRACKtext info */
+		track_tag = cue_tag_track(	track_get_cdtext(	cd_get_track(cd, tnum)),
+						track_get_rem(		cd_get_track(cd, tnum)));
+
+		cd_delete(cd);
+	}
+
+	if ((cd_tag != NULL) && (track_tag != NULL))
+	{
+		merge_tag = tag_merge(cd_tag, track_tag);
+		tag_free(cd_tag);
+		tag_free(track_tag);
+		return merge_tag;
+	}
+
+	else if (cd_tag != NULL)
+	{
+		return cd_tag;
+	}
+
+	else if (track_tag != NULL)
+	{
+		return track_tag;
+	}
+
+	else
+		return NULL;
+}
+
+struct tag*
+cue_tag_string(	char* str,
+		const unsigned int tnum)
+{
+	struct tag* cd_tag = NULL;
+	struct tag* track_tag = NULL;
+	struct tag* merge_tag = NULL;
+	struct Cd* cd = NULL;
+
+	if (tnum > 256)
+		return NULL;
+
+	if (str == NULL)
+		return NULL;
+	else
+		cd = cue_parse_string(str);
+
+	if (cd == NULL)
+		return NULL;
+	else
+	{
+		/* tag from CDtext info */
+		cd_tag = cue_tag_cd(	cd_get_cdtext(cd),
+					cd_get_rem(cd));
+
+		/* tag from TRACKtext info */
+		track_tag = cue_tag_track(	track_get_cdtext(	cd_get_track(cd, tnum)),
+						track_get_rem(		cd_get_track(cd, tnum)));
+
+		cd_delete(cd);
+	}
+
+	if ((cd_tag != NULL) && (track_tag != NULL))
+	{
+		merge_tag = tag_merge(cd_tag, track_tag);
+		tag_free(cd_tag);
+		tag_free(track_tag);
+		return merge_tag;
+	}
+
+	else if (cd_tag != NULL)
+	{
+		return cd_tag;
+	}
+
+	else if (track_tag != NULL)
+	{
+		return track_tag;
+	}
+
+	else
+		return NULL;
+}
diff --git a/src/cue/cue_tag.h b/src/cue/cue_tag.h
new file mode 100644
index 000000000..adc4c466e
--- /dev/null
+++ b/src/cue/cue_tag.h
@@ -0,0 +1,20 @@
+#ifndef MPD_CUE_TAG_H
+#define MPD_CUE_TAG_H
+
+#include "config.h"
+
+#ifdef HAVE_CUE /* libcue */
+
+#include <libcue/libcue.h>
+#include "../tag.h"
+
+struct tag*
+cue_tag_file(	FILE*,
+		const unsigned int);
+
+struct tag*
+cue_tag_string(	char*,
+		const unsigned int);
+
+#endif /* libcue */
+#endif