mirror of
https://gitlab.xiph.org/xiph/ezstream.git
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c5da3377ac
empty line. But ... git-svn-id: https://svn.xiph.org/trunk/ezstream@16525 0101bb08-14d6-0310-b084-bc0e0c8e3800
126 lines
3.4 KiB
Bash
Executable File
126 lines
3.4 KiB
Bash
Executable File
#!/bin/sh
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# Example playlist script, by Moritz Grimm
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# Public Domain where available. Anywhere else: all possible permissions
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# are granted and all warranties whatsoever are disclaimed. Use at your
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# own risk.
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#
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# The script plays a simple playlist, but also logs when and which new
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# song is queued. Because it writes the entire playlist each time it is
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# run, the script will probably not perform well with huge (500+kB)
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# playlist files.
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#
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# Before using it, the configuration variables below should be adjusted
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# appropriately.
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#
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# When using this script in multiple instances of ezstream, use
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# different STATE_DIR locations or rename the script to a unique name.
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#########################
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## BEGIN CONFIGURATION #######################################################
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#########################
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# STATE_DIR
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# Directory where this script keeps state. The directory should only be
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# writeable by the user and nobody else (therefore, /tmp is not
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# suitable.)
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STATE_DIR="."
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# PLAYLIST
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# The playlist that should be played by this script.
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PLAYLIST="playlist.txt"
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# LOGFILE (optional)
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# File to log song changes to. If not set, logging to file is disabled
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# (and this script can be replaced by $PLAYLIST.)
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LOGFILE="ezstream.log"
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# REPEAT (optional)
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# Set to 1 to repeat the playlist indefinitely, set to 0 or leave commented
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# out to allow ezstream to determine what to do at end-of-playlist.
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#REPEAT=1
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#######################
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## END CONFIGURATION #########################################################
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#######################
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_myname="$(basename $0)"
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# Check configuration above:
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if [ -z "${STATE_DIR}" -o ! -d "${STATE_DIR}" ]; then
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echo "${_myname}: STATE_DIR is not configured, does not exist or is not a directory." >&2
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exit 1
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fi
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if [ -z "${PLAYLIST}" -o ! -e "${PLAYLIST}" ]; then
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echo "${_myname}: PLAYLIST is not configured or does not exist." >&2
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exit 1
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fi
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test -n "${REPEAT}" || REPEAT=0
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# Set up helper files:
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_state="${STATE_DIR}/${_myname}.state"
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_playlist="`mktemp "${STATE_DIR}/${_myname}.XXXXXXXXXX"`"
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if [ $? -ne 0 ]; then
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echo "${_myname}: Unable to create temporary file." >&2
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exit 1
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fi
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trap 'rm -f ${_playlist}' 0
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trap 'rm -f ${_playlist}; exit 1' 2 15
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# Strip comments and empty lines from PLAYLIST, to support .m3u:
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sed -e 's,#.*,,g' < ${PLAYLIST} | grep -v '^[[:space:]]*$' >> ${_playlist}
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if [ $? -ne 0 ]; then
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echo "${_myname}: Unable to prepare playlist." >&2
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exit 1
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fi
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# Create state file, if it does not exist:
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test -f "${_state}" || touch "${_state}"
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if [ $? -ne 0 ]; then
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echo "${_myname}: Unable to create state file." >&2
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exit 1
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fi
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# Read current track no. from state file:
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read _track_no < "${_state}"
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if [ -z "${_track_no}" ]; then
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_track_no=1
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fi
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# Count number of tracks in the playlist:
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_num_tracks="$(wc -l < ${_playlist})"
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if [ ${_num_tracks} -eq 0 ]; then
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# Nothing to do, really.
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exit 0
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fi
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# Handle the end-of-playlist case:
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if [ ${_track_no} -gt ${_num_tracks} ]; then
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if [ ${REPEAT} -ne 1 ]; then
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# We're done.
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# Output an empty line to indicate end-of-playlist:
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echo
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rm -f "${_state}"
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exit 0
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fi
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_track_no=1
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fi
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# Get the current track from the playlist:
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_track="$(head -n ${_track_no} ${_playlist} | tail -n 1)"
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# Output:
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echo "${_track}"
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test -z "${LOGFILE}" || \
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echo "$(date '+%b %d %H:%M:%S') playlist=\"${PLAYLIST}\" no=${_track_no} track=\"${_track}\"" \
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>> "${LOGFILE}"
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# Increment track number and store:
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: $((_track_no += 1))
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echo "${_track_no}" > "${_state}"
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exit 0
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