multi-byte characters removal, from "while read" to awk.
parent
7d073a56fd
commit
bd9aa59a26
198
get-tracks.sh
198
get-tracks.sh
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@ -1,74 +1,119 @@
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#!/usr/bin/env sh
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get_time(){
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echo "$*" | sed "s/[ \t].*//"
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regroup_lines(){
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awk '
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BEGIN {
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first=1
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}
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get_title(){
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echo "$*" | cut -d ' ' -f 2-
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{
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if (first == 1)
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line = $1;
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else
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line = line " " $1;
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first = 0;
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if ($1 == "0a") {
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print line;
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first = 1
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}
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}
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reverse_word_order(){
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local result=
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for word in $@; do
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result="$word $result"
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done
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echo "$result"
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END {
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if (first == 0)
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print line
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}
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'
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}
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# bc is mandatory: arythmetic operations are very limited in ash.
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get_seconds(){
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number_position=0
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value=0
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simple_quote(){
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sed "s/e2 80 99/27/g"
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}
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values=$(echo "$*" | sed 's/:/\
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/g' | sed "s/^0//")
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for i in $(reverse_word_order $values); do
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case $number_position in
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0) value=$(echo "$value + $i " | bc);;
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1) value=$(echo "$value + (60 * $i)" | bc);;
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2) value=$(echo "$value + (3600 * $i)" | bc);;
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*) echo "invalid timecode $*"; exit 1;;
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esac
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remove_multibyte_characters(){
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sed "s/e2 80 .. //g"
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}
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number_position=$((number_position+1))
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done
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to_hex_one_colomun(){
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xxd -p -c 1
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}
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echo $value
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from_hex(){
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xxd -p -r
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}
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to_ascii(){
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to_hex_one_colomun |
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regroup_lines |
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simple_quote |
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remove_multibyte_characters |
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from_hex
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}
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process_durations(){
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awk -v NONUMBER="$NONUMBER" -v SEPARATOR="$SEPARATOR" '
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BEGIN {
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OFS=" "
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}
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{
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if (NR > 1) {
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print timestamp, $1, title;
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}
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timestamp = $1;
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if (NONUMBER == 1) {
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title = $2
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}
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else {
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if (NR < 10) {
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title = "0" NR SEPARATOR $2
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}
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else {
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title = NR SEPARATOR $2
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}
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}
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for (i=3; i <= NF; i++) {
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title = title " " $i
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}
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}
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END {
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print timestamp, "END_OF_FILE", title;
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}
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'
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}
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first_column_to_seconds(){
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awk '
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{
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# from 10:30 to 630
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n = split ($1, arr, ":")
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for (i = 0; i <= n; i++) {
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if (i == 0) {
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v = arr[n-i];
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}
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else if (i == 1) {
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v += 60 * arr[n-i];
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}
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else if (i == 2) {
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v += 3600 * arr[n-i];
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}
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}
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$1 = v;
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print;
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v = 0;
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}
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'
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}
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# Get a more usable time representation for the beginning and the end of songs.
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get_values(){
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audio_file="$1"
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time_file="$2"
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track_number=1
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while read X; do
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if [ $track_number -ne 1 ]; then
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to_unformatted=$(get_time $X)
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to_s=$(get_seconds $to_unformatted)
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echo "$from_s $to_s $title"
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fi
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from_unformatted=$(get_time $X)
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from_s=$(get_seconds $from_unformatted)
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title=$(get_title $X)
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if [ "$NONUMBER" = "" ]; then
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track_n=$track_number
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if [ $track_number -lt 10 ]; then
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track_n="0$track_number"
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fi
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title="${track_n}${SEPARATOR}${title}"
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fi
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track_number=$(echo $track_number + 1 | bc)
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done < "${time_file}"
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echo "$from_s $eof_marker $title"
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process_time_file(){
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time_file="$1"
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to_ascii < "$time_file" | first_column_to_seconds | process_durations
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}
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run_ffmpeg(){
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@ -114,11 +159,11 @@ rip(){
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audio_file="$1"
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time_file="$2"
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get_values "$audio_file" "$time_file" | while read LINE; do
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process_time_file "$time_file" | while read LINE; do
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track_start_s=$(echo $LINE | cut -d ' ' -f 1)
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track_end_s=$(echo $LINE | cut -d ' ' -f 2)
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track_title=$(echo $LINE | cut -d ' ' -f 3-)
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if [ "$track_end_s" != "$eof_marker" ]; then
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if [ "$track_end_s" != "END_OF_FILE" ]; then
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track_duration=$(echo "$track_end_s - $track_start_s" | bc)
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else
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track_duration=""
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@ -137,7 +182,7 @@ usage(){
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echo "show output format: start end title"
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echo
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echo "envvar: SIMULATION, if non empty, do not invoke ffmpeg"
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echo "envvar: NONUMBER, if non empty, do not write song number"
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echo "envvar: NONUMBER, if equals 1, do not write song number"
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echo "envvar: FORMAT [mp3,ogg,opus,…], see the ffmpeg documentation"
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echo "envvar: SEPARATOR [separator] (default: ' - '), write song number, with this separator"
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echo " example with SEPARATOR='_': song names will be 01_song.opus 02_song.opus…"
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@ -158,17 +203,31 @@ shift
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if [ "$FORMAT" = "" ]; then
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echo "default FORMAT: opus"
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FORMAT="opus"
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else
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echo "FORMAT: $FORMAT"
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fi
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if [ "$VERBOSITY" = "" ]; then
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echo "default VERBOSITY: 1"
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VERBOSITY=1
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else
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echo "VERBOSITY level: $VERBOSITY"
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fi
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if [ "$NONUMBER" = "" ]; then
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echo "default NONUMBER: disabled"
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NONUMBER=0
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# Assume that there should be a separator.
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if [ "$SEPARATOR" = "" ]; then
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echo "default SEPARATOR: ' - '"
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SEPARATOR=" - "
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else
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echo "SEPARATOR: '$SEPARATOR'"
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fi
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else
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echo "NONUMBER: won't prefix tracks"
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SEPARATOR=""
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fi
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if [ "$SIMULATION" != "" ]; then
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@ -178,7 +237,18 @@ fi
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# soxi provides the total length of the music file.
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#which soxi 2>/dev/null
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#total_length=$(soxi -D "${audio_file}" | sed "s/\..*//") # integer values only
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eof_marker="END_OF_FILE"
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</dev/null xxd -p >/dev/null 2>/dev/null
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if [ $? -ne 0 ]; then
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echo "xxd: you don't have an xxd program with '-p' option." 1>&2
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exit 1
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fi
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</dev/null xxd -r >/dev/null 2>/dev/null
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if [ $? -ne 0 ]; then
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echo "xxd: you don't have an xxd program with '-r' option." 1>&2
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exit 1
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fi
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case "x-${command}" in
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x-show)
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@ -189,7 +259,7 @@ case "x-${command}" in
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exit 1
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fi
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get_values "$1" "$2"
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process_time_file "$2"
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;;
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x-rip)
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@ -203,6 +273,10 @@ case "x-${command}" in
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rip "$1" "$2"
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;;
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x-input)
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to_ascii < "$1"
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;;
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*)
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usage 1>&2
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exit 1
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