+/** The different sorting methods of the ls command. */
+enum ls_sorting_method {
+ /** -sp (default) */
+ LS_SORT_BY_PATH,
+ /** -ss */
+ LS_SORT_BY_SCORE,
+ /** -sl */
+ LS_SORT_BY_LAST_PLAYED,
+ /** -sn */
+ LS_SORT_BY_NUM_PLAYED,
+ /** -sf */
+ LS_SORT_BY_FREQUENCY,
+ /** -sc */
+ LS_SORT_BY_CHANNELS,
+ /** -si */
+ LS_SORT_BY_IMAGE_ID,
+ /** -sy */
+ LS_SORT_BY_LYRICS_ID,
+ /** -sb */
+ LS_SORT_BY_BITRATE,
+ /** -sd */
+ LS_SORT_BY_DURATION,
+ /** -sa */
+ LS_SORT_BY_AUDIO_FORMAT,
+ /** -sh */
+ LS_SORT_BY_HASH,
+};
+
+/** The different listing modes of the ls command. */
+enum ls_listing_mode {
+ /** Default listing mode. */
+ LS_MODE_SHORT,
+ /** -l or -ll */
+ LS_MODE_LONG,
+ /** -lv */
+ LS_MODE_VERBOSE,
+ /** -lm */
+ LS_MODE_MBOX
+};
+
+/** The flags accepted by the ls command. */
+enum ls_flags {
+ /** -p */
+ LS_FLAG_FULL_PATH = 1,
+ /** -a */
+ LS_FLAG_ADMISSIBLE_ONLY = 2,
+ /** -r */
+ LS_FLAG_REVERSE = 4,
+};
+
+/**
+ * The size of the individual output fields of the ls command.
+ *
+ * These depend on the actual content being listed. If, for instance only files
+ * with duration less than an hour are being listed, then the duration with is
+ * made smaller because then the duration is listed as mm:ss rather than
+ * hh:mm:ss.
+ */
+struct ls_widths {
+ /** size of the score field. */
+ unsigned short score_width;
+ /** size of the image id field. */
+ unsigned short image_id_width;
+ /** size of the lyrics id field. */
+ unsigned short lyrics_id_width;
+ /** size of the bitrate field. */
+ unsigned short bitrate_width;
+ /** size of the frequency field. */
+ unsigned short frequency_width;
+ /** size of the duration field. */
+ unsigned short duration_width;
+ /** size of the num played field. */
+ unsigned short num_played_width;
+};
+
+/** Data passed to the different compare functions (called by qsort()). */
+struct ls_data {
+ /** Usual audio format handler information. */
+ struct audio_format_info afhi;
+ /** Audio file selector information. */
+ struct afs_info afsi;
+ /** The full path of the audio file. */
+ char *path;
+ /** The score value (if -a was given). */
+ long score;
+ /** The sha1 hash of audio file. */
+ HASH_TYPE *hash;
+};
+
+struct ls_options {
+ unsigned flags;
+ enum ls_sorting_method sorting;
+ enum ls_listing_mode mode;
+ char **patterns;
+ int num_patterns;
+ struct ls_widths widths;
+ uint32_t array_size;
+ uint32_t num_matching_paths;
+ struct ls_data *data;
+ struct ls_data **data_ptr;
+};
+