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https://github.com/mpv-player/mpv
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TOOLS/mpv_identify.sh: move script body to a function
Don't prepend each variable with __midentify__, just make them local to the function.
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288
TOOLS/mpv_identify.sh
Executable file → Normal file
288
TOOLS/mpv_identify.sh
Executable file → Normal file
@ -17,157 +17,153 @@
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# When multiple files were specified, their info will be put into FOO_* for the
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# first file, FOO_1_* for the second file, FOO_2_* for the third file, etc.
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case "$0" in
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mpv_identify.sh|*/mpv_identify.sh)
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# we are NOT being sourced
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case "$1" in
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__midentify__main() {
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case "$0" in
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mpv_identify.sh|*/mpv_identify.sh)
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# we are NOT being sourced
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case "$1" in
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'')
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;;
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*)
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set -- '' "$@"
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;;
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esac
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;;
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esac
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if [ $# -lt 2 ]; then
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echo >&2 "Usage 1 (for humans only): $0 filename.mkv"
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echo >&2 "will print all property values."
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echo >&2 "Note that this output really shouldn't be parsed, as the"
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echo >&2 "format is subject to change."
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echo >&2
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echo >&2 "Usage 2 (for use by scripts): see top of this file"
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echo >&2
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echo >&2 "NOTE: for mkv with ordered chapters, this may"
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echo >&2 "not always identify the specified file, but the"
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echo >&2 "file providing the first chapter. Specify"
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echo >&2 "--no-ordered-chapters to prevent this."
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return 1
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fi
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if [ -z "$MPV" ]; then
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local MPV="mpv"
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fi
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local LF="
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"
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local nextprefix=$1
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shift
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if [ -n "$nextprefix" ]; then
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# in case of error, we always want this unset
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eval unset $nextprefix'path'
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fi
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local allprops="
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filename
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path
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stream-start
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stream-end
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stream-length
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demuxer
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length
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chapters
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editions
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titles
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audio
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audio-bitrate
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audio-codec
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audio-format
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channels
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samplerate
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video
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angle
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video-bitrate
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video-codec
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video-format
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video-aspect
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fps
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width
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height
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dwidth
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dheight
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sub
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"
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# TODO add metadata support once mpv can do it
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local propstr="X-MIDENTIFY-START:$LF"
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local key
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for key in $allprops; do
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propstr=$propstr"X-MIDENTIFY: $key \${=$key}$LF"
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key=`echo "$key" | tr - _`
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eval unset $nextprefix$key
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done
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local output=`$MPV --term-playing-msg="$propstr" --vo=null --ao=null --frames=1 --quiet --no-cache --no-config "$@"`
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local fileindex=0
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local prefix=
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while :; do
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local line output
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case "$output" in
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'')
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break
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;;
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*$LF*)
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line=${output%%$LF*}
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output=${output#*$LF}
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;;
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*)
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set -- '' "$@"
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line=$output
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output=
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;;
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esac
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;;
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esac
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if [ $# -lt 2 ]; then
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echo >&2 "Usage 1 (for humans only): $0 filename.mkv"
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echo >&2 "will print all property values."
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echo >&2 "Note that this output really shouldn't be parsed, as the"
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echo >&2 "format is subject to change."
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echo >&2
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echo >&2 "Usage 2 (for use by scripts): see top of this file"
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echo >&2
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echo >&2 "NOTE: for mkv with ordered chapters, this may"
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echo >&2 "not always identify the specified file, but the"
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echo >&2 "file providing the first chapter. Specify"
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echo >&2 "--no-ordered-chapters to prevent this."
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exit 1
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fi
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if [ -z "$MPV" ]; then
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MPV="mpv"
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fi
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__midentify__LF="
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"
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__midentify__nextprefix=$1
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shift
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if [ -n "$__midentify__nextprefix" ]; then
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# in case of error, we always want this unset
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eval unset $__midentify__nextprefix'path'
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fi
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__midentify__allprops="
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filename
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path
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stream-start
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stream-end
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stream-length
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demuxer
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length
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chapters
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editions
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titles
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audio
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audio-bitrate
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audio-codec
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audio-format
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channels
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samplerate
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video
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angle
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video-bitrate
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video-codec
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video-format
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video-aspect
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fps
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width
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height
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dwidth
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dheight
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sub
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"
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# TODO add metadata support once mpv can do it
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__midentify__propstr="X-MIDENTIFY-START:$__midentify__LF"
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for __midentify__key in $__midentify__allprops; do
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__midentify__propstr=$__midentify__propstr"X-MIDENTIFY: $__midentify__key \${=$__midentify__key}$__midentify__LF"
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__midentify__key=`echo "$__midentify__key" | tr - _`
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eval unset $__midentify__nextprefix$__midentify__key
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done
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__midentify__output=`$MPV --term-playing-msg="$__midentify__propstr" --vo=null --ao=null --frames=1 --quiet --no-cache --no-config "$@"`
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__midentify__fileindex=0
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__midentify__prefix=
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while :; do
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case "$__midentify__output" in
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'')
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break
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;;
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*$__midentify__LF*)
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__midentify__line=${__midentify__output%%$__midentify__LF*}
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__midentify__output=${__midentify__output#*$__midentify__LF}
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;;
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*)
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__midentify__line=$__midentify__output
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__midentify__output=
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;;
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esac
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case "$__midentify__line" in
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X-MIDENTIFY-START:)
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if [ -n "$__midentify__nextprefix" ]; then
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__midentify__prefix=$__midentify__nextprefix
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if [ $__midentify__fileindex -gt 0 ]; then
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__midentify__nextprefix=${__midentify__prefix%$__midentify__fileindex\_}
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case "$line" in
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X-MIDENTIFY-START:)
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if [ -n "$nextprefix" ]; then
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prefix=$nextprefix
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if [ $fileindex -gt 0 ]; then
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nextprefix=${prefix%$fileindex\_}
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fi
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fileindex=$(($fileindex+1))
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nextprefix=$nextprefix$fileindex\_
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for key in $allprops; do
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key=`echo "$key" | tr - _`
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eval unset $nextprefix$key
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done
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else
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if [ $fileindex -gt 0 ]; then
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echo
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fi
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fileindex=$(($fileindex+1))
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fi
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__midentify__fileindex=$(($__midentify__fileindex+1))
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__midentify__nextprefix=$__midentify__nextprefix$__midentify__fileindex\_
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for __midentify__key in $__midentify__allprops; do
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__midentify__key=`echo "$__midentify__key" | tr - _`
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eval unset $__midentify__nextprefix$__midentify__key
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done
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else
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if [ $__midentify__fileindex -gt 0 ]; then
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echo
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;;
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X-MIDENTIFY:\ *)
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key=${line#X-MIDENTIFY:\ }
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local value=${key#* }
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key=${key%% *}
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key=`echo "$key" | tr - _`
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if [ -n "$nextprefix" ]; then
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if [ -z "$prefix" ]; then
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echo >&2 "Got X-MIDENTIFY: without X-MIDENTIFY-START:"
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elif [ -n "$value" ]; then
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eval $prefix$key=\$value
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fi
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else
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if [ -n "$value" ]; then
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echo "$key=$value"
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fi
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fi
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__midentify__fileindex=$(($__midentify__fileindex+1))
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fi
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;;
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X-MIDENTIFY:\ *)
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__midentify__key=${__midentify__line#X-MIDENTIFY:\ }
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__midentify__value=${__midentify__key#* }
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__midentify__key=${__midentify__key%% *}
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__midentify__key=`echo "$__midentify__key" | tr - _`
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if [ -n "$__midentify__nextprefix" ]; then
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if [ -z "$__midentify__prefix" ]; then
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echo >&2 "Got X-MIDENTIFY: without X-MIDENTIFY-START:"
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elif [ -n "$__midentify__value" ]; then
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eval $__midentify__prefix$__midentify__key=\$__midentify__value
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fi
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else
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if [ -n "$__midentify__value" ]; then
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echo "$__midentify__key=$__midentify__value"
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fi
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fi
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;;
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esac
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done
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;;
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esac
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done
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}
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unset __midentify__fileindex
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unset __midentify__allprops
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unset __midentify__key
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unset __midentify__LF
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unset __midentify__line
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unset __midentify__output
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unset __midentify__nextprefix
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unset __midentify__prefix
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unset __midentify__propstr
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unset __midentify__value
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__midentify__main "$@"
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