metaflac-field2field: minor improvements, shellcheck
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aca5e08738
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@ -18,41 +18,45 @@
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#set -x
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print_usage()
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{
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echo "Usage:"
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echo " $0 <ACTION> <SRC_FIELD> <DST_FIELD> <FILE.flac> [ <FILE2.flac> [...] ]"
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echo "<ACTION> : copy | move | rmcopy | mvcopy"
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echo " copy: each occurrence of SRC_FIELD is duplicated to create an occurrence of"
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echo " DST_FIELD; all the existing occurrences of SRC_FIELD and DST_FIELD are"
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echo " kept."
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echo " move: each occurrence of SRC_FIELD is renamed to create an occurrence of"
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echo " DST_FIELD; the existing occurrences of DST_FIELD are kept."
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echo " rmcopy: the existing occurrences of DST_FIELD are deleted, then each"
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echo " occurrence of SRC_FIELD is duplicated to create an occurrence"
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echo " of DST_FIELD; the occurrences of SRC_FIELD are kept."
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echo " rmmove: the existing occurrences of DST_FIELD are deleted, then each"
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echo " occurrence of SRC_FIELD is renamed to create an occurrence of"
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echo " DST_FIELD."
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exit 1
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}
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USAGE=$(cat <<EOF
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Usage:
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$0 <ACTION> <SRC_FIELD> <DST_FIELD> <FILE.flac> [ <FILE2.flac> [...] ]
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<ACTION> : copy | move | rmcopy | mvcopy
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copy: each occurrence of SRC_FIELD is duplicated to create an occurrence of
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DST_FIELD; all the existing occurrences of SRC_FIELD and DST_FIELD are
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kept.
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move: each occurrence of SRC_FIELD is renamed to create an occurrence of
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DST_FIELD; the existing occurrences of DST_FIELD are kept.
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rmcopy: the existing occurrences of DST_FIELD are deleted, then each
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occurrence of SRC_FIELD is duplicated to create an occurrence
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of DST_FIELD; the occurrences of SRC_FIELD are kept.
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rmmove: the existing occurrences of DST_FIELD are deleted, then each
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occurrence of SRC_FIELD is renamed to create an occurrence of
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DST_FIELD.
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EOF
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)
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# Right number of arguments?
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if [ $# -lt 4 ] ; then
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echo "Wrong number of arguments!"
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echo "Wrong number of arguments!" >&2
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print_usage
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fi
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ACTION=$1
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ACTION="$1"
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shift
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# Known action type?
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case $ACTION in
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case "$ACTION" in
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copy) ;;
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move) ;;
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rmcopy) ;;
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rmmove) ;;
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*) echo "Action unknown \"$ACTION\"!" ; print_usage ;;
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*)
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printf 'Action unknown "%s"!\n\n' "$ACTION" >&2
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printf '%s\n' "$USAGE" >&2
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exit 1
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;;
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esac
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SRC_FIELD=$1
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@ -60,28 +64,28 @@ shift
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DST_FIELD=$1
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shift
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echo "Source field: $SRC_FIELD"
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echo "Destination field: $DST_FIELD"
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echo "Action: $ACTION"
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printf 'Source field: %s\n' "$SRC_FIELD"
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printf 'Destination field: %s\n' "$DST_FIELD"
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printf 'Action: %s\n' "$ACTION"
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echo "Processing files..."
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if echo $ACTION | egrep '^rm' >/dev/null ; then
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echo "Deleting field $DST_FIELD on each file..."
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metaflac --remove-tag=$DST_FIELD "$@"
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if echo "$ACTION" | grep '^rm' >/dev/null ; then
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printf 'Deleting field "%s" on each file...\n' "$DST_FIELD"
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metaflac --remove-tag="$DST_FIELD" "$@"
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fi
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for file in "$@" ; do
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echo "Setting field \"$DST_FIELD\" on file: $file"
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metaflac --show-tag=$SRC_FIELD "$file" | sed 's/^[A-Z]\+=//' | while read c1 ; do
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echo "Adding $DST_FIELD=$c1..."
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metaflac --set-tag=$DST_FIELD="$c1" "$file"
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printf 'Setting field "%s" on file: "%s"\n' "$DST_FIELD" "$file"
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metaflac --show-tag="$SRC_FIELD" "$file" | sed 's/^[A-Z]\+=//' | while read -r c1 ; do
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printf 'Adding "%s"...\n' "$DST_FIELD=$c1"
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metaflac --set-tag="$DST_FIELD"="$c1" "$file"
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done
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done
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if echo $ACTION | egrep 'move$' >/dev/null ; then
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echo "Deleting $SRC_FIELD on each file..."
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metaflac --remove-tag=$SRC_FIELD "$@"
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if echo "$ACTION" | grep 'move$' >/dev/null ; then
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printf 'Deleting "%s" on each file...\n' "$SRC_FIELD"
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metaflac --remove-tag="$SRC_FIELD" "$@"
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fi
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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