123 lines
3.3 KiB
Bash
Executable File
123 lines
3.3 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# Example playlist script, by Moritz Grimm
|
|
# Public Domain where available. Anywhere else: all possible permissions
|
|
# are granted and all warranties whatsoever are disclaimed. Use at your
|
|
# own risk.
|
|
#
|
|
# The script plays a simple playlist, but also logs when and which new
|
|
# song is queued. Because it writes the entire playlist each time it is
|
|
# run, the script will probably not perform well with huge (500+kB)
|
|
# playlist files.
|
|
#
|
|
# Before using it, the configuration variables below should be adjusted
|
|
# appropriately.
|
|
#
|
|
# When using this script in multiple instances of ezstream, use
|
|
# different STATE_DIR locations or rename the script to a unique name.
|
|
|
|
|
|
#########################
|
|
## BEGIN CONFIGURATION #######################################################
|
|
#########################
|
|
|
|
|
|
# STATE_DIR
|
|
# Directory where this script keeps state. The directory should only be
|
|
# writeable by the user and nobody else (therefore, /tmp is not
|
|
# suitable.)
|
|
STATE_DIR="."
|
|
|
|
# PLAYLIST
|
|
# The playlist that should be played by this script.
|
|
PLAYLIST="playlist.txt"
|
|
|
|
# LOGFILE (optional)
|
|
# File to log song changes to. If not set, logging to file is disabled
|
|
# (and this script can be replaced by $PLAYLIST.)
|
|
LOGFILE="ezstream.log"
|
|
|
|
# REPEAT (optional)
|
|
# Set to 1 to repeat the playlist indefinitely, set to 0 or leave commented
|
|
# out to allow ezstream to determine what to do at end-of-playlist.
|
|
#REPEAT=1
|
|
|
|
|
|
#######################
|
|
## END CONFIGURATION #########################################################
|
|
#######################
|
|
|
|
_myname="$(basename $0)"
|
|
|
|
# Ignore SIGHUP, and exit 1 on SIGINT and SIGTERM
|
|
trap '' 1
|
|
trap 'exit 1' 2 15
|
|
|
|
# Check configuration above:
|
|
if [ -z "${STATE_DIR}" -o ! -d "${STATE_DIR}" ]; then
|
|
echo "${_myname}: STATE_DIR is not configured, does not exist or is not a directory." >&2
|
|
exit 1
|
|
fi
|
|
if [ -z "${PLAYLIST}" -o ! -e "${PLAYLIST}" ]; then
|
|
echo "${_myname}: PLAYLIST is not configured or does not exist." >&2
|
|
exit 1
|
|
fi
|
|
test -n "${REPEAT}" || REPEAT=0
|
|
|
|
# Set up helper files:
|
|
_state="${STATE_DIR}/${_myname}.state"
|
|
_playlist="$(mktemp "${STATE_DIR}/${_myname}.XXXXXXXXXX")"
|
|
if [ $? -ne 0 ]; then
|
|
echo "${_myname}: Unable to create temporary file." >&2
|
|
exit 1
|
|
fi
|
|
# Delete temporary file on exit
|
|
trap 'rm -f ${_playlist}' 0
|
|
|
|
# Strip comments and empty lines from PLAYLIST, to support .m3u:
|
|
sed -e 's,#.*,,g' < ${PLAYLIST} | grep -v '^[[:space:]]*$' >> ${_playlist}
|
|
if [ $? -ne 0 ]; then
|
|
echo "${_myname}: Unable to prepare playlist." >&2
|
|
exit 1
|
|
fi
|
|
|
|
# Create state file, if it does not exist:
|
|
test -f "${_state}" || touch "${_state}"
|
|
if [ $? -ne 0 ]; then
|
|
echo "${_myname}: Unable to create state file." >&2
|
|
exit 1
|
|
fi
|
|
|
|
# Read current track no. from state file:
|
|
read _track_no < "${_state}"
|
|
if [ -z "${_track_no}" ]; then
|
|
_track_no=1
|
|
fi
|
|
|
|
# Handle the end-of-playlist case:
|
|
if [ ${_track_no} -gt ${_num_tracks} ]; then
|
|
if [ ${REPEAT} -ne 1 ]; then
|
|
# We're done.
|
|
# Output an empty line to indicate end-of-playlist:
|
|
echo
|
|
rm -f "${_state}"
|
|
exit 0
|
|
fi
|
|
_track_no=1
|
|
fi
|
|
|
|
# Get the current track from the playlist:
|
|
_track="$(head -n ${_track_no} ${_playlist} | tail -n 1)"
|
|
|
|
# Output:
|
|
echo "${_track}"
|
|
test -z "${LOGFILE}" || \
|
|
echo "$(date '+%b %d %H:%M:%S') playlist=\"${PLAYLIST}\" no=${_track_no} track=\"${_track}\"" \
|
|
>> "${LOGFILE}"
|
|
|
|
# Increment track number and store:
|
|
: $((_track_no += 1))
|
|
echo "${_track_no}" > "${_state}"
|
|
|
|
exit 0
|