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Code Issues Releases Wiki Activity

TOOLS/mpv_identify.sh: various style improvements

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Double-quote everything, eliminate unneeded evals and deprecated
`backtits` substitution syntax.
This commit is contained in:
shdown 2014-08-30 20:31:38 +04:00 committed by wm4
parent 880d5c8a4a
commit 4a976c469c
1 changed files with 27 additions and 32 deletions
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59
TOOLS/mpv_identify.sh
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@ -22,17 +22,11 @@ __midentify__main() {
case "$0" in
mpv_identify.sh|*/mpv_identify.sh)
# we are NOT being sourced
case "$1" in
'')
;;
*)
set -- '' "$@"
;;
esac
[ -n "$1" ] && set -- '' "$@"
;;
esac
if [ $# -lt 2 ]; then
if [ "$#" -lt 2 ]; then
echo >&2 "Usage 1 (for humans only): $0 filename.mkv"
echo >&2 "will print all property values."
echo >&2 "Note that this output really shouldn't be parsed, as the"
@ -54,12 +48,12 @@ __midentify__main() {
local LF="
"
local nextprefix=$1
local nextprefix="$1"
shift
if [ -n "$nextprefix" ]; then
# in case of error, we always want this unset
eval unset $nextprefix'path'
unset "${nextprefix}path"
fi
local allprops="
@ -102,12 +96,13 @@ __midentify__main() {
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
propstr="${propstr}X-MIDENTIFY: $key \${=$key}$LF"
key="$(printf '%s\n' "$key" | tr - _)"
unset "$nextprefix$key"
done
local output=`$MPV --term-playing-msg="$propstr" --vo=null --ao=null --frames=1 --quiet --no-cache --no-config "$@"`
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
@ -116,45 +111,45 @@ __midentify__main() {
'')
break
;;
*$LF*)
line=${output%%$LF*}
output=${output#*$LF}
*"$LF"*)
line="${output%%$LF*}"
output="${output#*$LF}"
;;
*)
line=$output
line="$output"
output=
;;
esac
case "$line" in
X-MIDENTIFY-START:)
if [ -n "$nextprefix" ]; then
prefix=$nextprefix
if [ $fileindex -gt 0 ]; then
nextprefix=${prefix%$fileindex\_}
prefix="$nextprefix"
if [ "$fileindex" -gt 0 ]; then
nextprefix="${prefix%${fileindex}_}"
fi
fileindex=$(($fileindex+1))
nextprefix=$nextprefix$fileindex\_
fileindex="$(($fileindex+1))"
nextprefix="${nextprefix}${fileindex}_"
for key in $allprops; do
key=`echo "$key" | tr - _`
eval unset $nextprefix$key
key="$(printf '%s\n' "$key" | tr - _)"
unset "$nextprefix$key"
done
else
if [ $fileindex -gt 0 ]; then
if [ "$fileindex" -gt 0 ]; then
echo
fi
fileindex=$(($fileindex+1))
fileindex="$(($fileindex+1))"
fi
;;
X-MIDENTIFY:\ *)
key=${line#X-MIDENTIFY:\ }
local value=${key#* }
key=${key%% *}
key=`echo "$key" | tr - _`
local key="${line#X-MIDENTIFY:\ }"
local value="${key#* }"
key="${key%% *}"
key="$(printf '%s\n' "$key" | tr - _)"
if [ -n "$nextprefix" ]; then
if [ -z "$prefix" ]; then
echo >&2 "Got X-MIDENTIFY: without X-MIDENTIFY-START:"
elif [ -n "$value" ]; then
eval $prefix$key=\$value
eval "$prefix$key"='"$value"'
fi
else
if [ -n "$value" ]; then