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Code Issues Releases Wiki Activity

TOOLS/mpv_identify.sh: move script body to a function

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Don't prepend each variable with __midentify__, just make them local
to the function.
This commit is contained in:
shdown 2014-08-30 20:30:56 +04:00 committed by wm4
parent cbe03b6255
commit 880d5c8a4a
1 changed files with 142 additions and 146 deletions
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102
TOOLS/mpv_identify.sh Executable file → Normal file
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@ -17,6 +17,8 @@
# When multiple files were specified, their info will be put into FOO_* for the
# first file, FOO_1_* for the second file, FOO_2_* for the third file, etc.
__midentify__main() {
case "$0" in
mpv_identify.sh|*/mpv_identify.sh)
# we are NOT being sourced
@ -42,25 +44,25 @@ if [ $# -lt 2 ]; then
echo >&2 "not always identify the specified file, but the"
echo >&2 "file providing the first chapter. Specify"
echo >&2 "--no-ordered-chapters to prevent this."
exit 1
return 1
fi
if [ -z "$MPV" ]; then
MPV="mpv"
local MPV="mpv"
fi
__midentify__LF="
local LF="
"
__midentify__nextprefix=$1
local nextprefix=$1
shift
if [ -n "$__midentify__nextprefix" ]; then
if [ -n "$nextprefix" ]; then
# in case of error, we always want this unset
eval unset $__midentify__nextprefix'path'
eval unset $nextprefix'path'
fi
__midentify__allprops="
local allprops="
filename
path
stream-start
@ -97,77 +99,71 @@ __midentify__allprops="
"
# TODO add metadata support once mpv can do it
__midentify__propstr="X-MIDENTIFY-START:$__midentify__LF"
for __midentify__key in $__midentify__allprops; do
__midentify__propstr=$__midentify__propstr"X-MIDENTIFY: $__midentify__key \${=$__midentify__key}$__midentify__LF"
__midentify__key=`echo "$__midentify__key" | tr - _`
eval unset $__midentify__nextprefix$__midentify__key
local propstr="X-MIDENTIFY-START:$LF"
local key
for key in $allprops; do
propstr=$propstr"X-MIDENTIFY: $key \${=$key}$LF"
key=`echo "$key" | tr - _`
eval unset $nextprefix$key
done
__midentify__output=`$MPV --term-playing-msg="$__midentify__propstr" --vo=null --ao=null --frames=1 --quiet --no-cache --no-config "$@"`
__midentify__fileindex=0
__midentify__prefix=
local output=`$MPV --term-playing-msg="$propstr" --vo=null --ao=null --frames=1 --quiet --no-cache --no-config "$@"`
local fileindex=0
local prefix=
while :; do
case "$__midentify__output" in
local line output
case "$output" in
'')
break
;;
*$__midentify__LF*)
__midentify__line=${__midentify__output%%$__midentify__LF*}
__midentify__output=${__midentify__output#*$__midentify__LF}
*$LF*)
line=${output%%$LF*}
output=${output#*$LF}
;;
*)
__midentify__line=$__midentify__output
__midentify__output=
line=$output
output=
;;
esac
case "$__midentify__line" in
case "$line" in
X-MIDENTIFY-START:)
if [ -n "$__midentify__nextprefix" ]; then
__midentify__prefix=$__midentify__nextprefix
if [ $__midentify__fileindex -gt 0 ]; then
__midentify__nextprefix=${__midentify__prefix%$__midentify__fileindex\_}
if [ -n "$nextprefix" ]; then
prefix=$nextprefix
if [ $fileindex -gt 0 ]; then
nextprefix=${prefix%$fileindex\_}
fi
__midentify__fileindex=$(($__midentify__fileindex+1))
__midentify__nextprefix=$__midentify__nextprefix$__midentify__fileindex\_
for __midentify__key in $__midentify__allprops; do
__midentify__key=`echo "$__midentify__key" | tr - _`
eval unset $__midentify__nextprefix$__midentify__key
fileindex=$(($fileindex+1))
nextprefix=$nextprefix$fileindex\_
for key in $allprops; do
key=`echo "$key" | tr - _`
eval unset $nextprefix$key
done
else
if [ $__midentify__fileindex -gt 0 ]; then
if [ $fileindex -gt 0 ]; then
echo
fi
__midentify__fileindex=$(($__midentify__fileindex+1))
fileindex=$(($fileindex+1))
fi
;;
X-MIDENTIFY:\ *)
__midentify__key=${__midentify__line#X-MIDENTIFY:\ }
__midentify__value=${__midentify__key#* }
__midentify__key=${__midentify__key%% *}
__midentify__key=`echo "$__midentify__key" | tr - _`
if [ -n "$__midentify__nextprefix" ]; then
if [ -z "$__midentify__prefix" ]; then
key=${line#X-MIDENTIFY:\ }
local value=${key#* }
key=${key%% *}
key=`echo "$key" | tr - _`
if [ -n "$nextprefix" ]; then
if [ -z "$prefix" ]; then
echo >&2 "Got X-MIDENTIFY: without X-MIDENTIFY-START:"
elif [ -n "$__midentify__value" ]; then
eval $__midentify__prefix$__midentify__key=\$__midentify__value
elif [ -n "$value" ]; then
eval $prefix$key=\$value
fi
else
if [ -n "$__midentify__value" ]; then
echo "$__midentify__key=$__midentify__value"
if [ -n "$value" ]; then
echo "$key=$value"
fi
fi
;;
esac
done
}
unset __midentify__fileindex
unset __midentify__allprops
unset __midentify__key
unset __midentify__LF
unset __midentify__line
unset __midentify__output
unset __midentify__nextprefix
unset __midentify__prefix
unset __midentify__propstr
unset __midentify__value
__midentify__main "$@"