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plaintext [2020/11/09 17:36] – tags rjtplaintext [2024/03/02 18:03] (current) – Added some commands I use to work with playlists rjt
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 ====== Plaintext ====== ====== Plaintext ======
 +
 +===== My Use =====
 +
 +I mostly use [[mpd]] for playing digital music. This means the playlists are in a plaintext format (m3u), which I find really handy as I can easily modify them. Some examples:
 +
 +Search playlists for a term, for example a song or artist name.
 +
 +<code bash>grep -r -n -i [term] .</code>
 +
 +Replace term in playlists. For example if I move a directory or change a filename. You have to escape more non alphanumeric characters with a ''\'', common ones being ''/'', ''['', '']'', ''('', '')''. You can replace the asterisk with a specific file if you want. I'm using a pound symbol instead of the deaful ''/'' to make this a little less of a hassle.
 +
 +<code bash>sed -i 's#[find]#[replace]#g' *</code>
 +
 +I have a convoluted [[bash]] script to convert the paths in playlists formatted to work with [[mpd]] to ones that will works with, say, [[vlc]]. But hey, I learnt how to add arguments and do if/then statements in Bash so I'm very happy it works. (still have to add logging and show diff options)
 +
 +<code bash>
 +#!/bin/bash
 +# Converts .M3U playlists generated in MPD into
 +# ones usable outside MPD—in VLC, for example—by
 +# prepending information to the paths.
 +
 +# options:
 +# -f Convert single playlist, provide filename with extension.
 +# By default it will convert all .M3U files in mpd directory
 +# -a Convert to absolute paths (in /home/[user]/Music/Playlists/path_absolute)
 +# -r Convert to relative paths (in /home/[user]/Music/Playlists)
 +
 +dir=true
 +abs=false
 +rel=false
 +
 +while getopts :f:ard flag
 +do
 + case $flag in
 + f)
 + file=${OPTARG}
 + dir=false
 + ;;
 + a)
 + abs=true
 + ;;
 + r)
 + rel=true
 + ;;
 + esac
 +done
 +
 +if [ "$dir" = true ]
 +then
 + if [ "$abs" = true ] && [ "$rel" = false ]
 + then
 + for pl in /home/[user]/Music/Playlists/mpd/*.m3u
 + do
 + sed -e "s#^#/home/[user]/Music/#" "$pl" > "/home/[user]/Music/Playlists/path_absolute/${pl##*/}"
 + done
 + echo "Converted directory using absolute paths"
 + elif [ "$rel" = true ] && [ "$abs" = false ]
 + then
 + for pl in /home/[user]/Music/Playlists/mpd/*.m3u
 + do
 + sed -e "s#^#../#" "$pl" > "/home/[user]/Music/Playlists/${pl##*/}"
 + done
 + echo "Converted directory using relative paths"
 + elif [ "$abs" = true ] && [ "$rel" = true ]
 + then
 + for pl in /home/[user]/Music/Playlists/mpd/*.m3u
 + do
 + sed -e "s#^#/home/[user]/Music/#" "$pl" > "/home/[user]/Music/Playlists/path_absolute/${pl##*/}" &&
 + sed -e "s#^#../#" "$pl" > "/home/[user]/Music/Playlists/${pl##*/}"
 + done
 + echo "Converted directory using absolute and relative paths"
 + fi
 +elif [ "$dir" = false ]
 +then
 + if [ "$abs" = true ] && [ "$rel" = false ]
 + then
 + sed -e "s#^#/home/[user]/Music/#" "/home/[user]/Music/Playlists/mpd/$file.m3u" > "/home/[user]/Playlists/path_absolute/$file.m3u"
 + echo "Converted single file using absolute paths"
 + elif [ "$rel" = true ] && [ "$abs" = false ]
 + then
 + sed -e "s#^#../#" "/home/[user]/Music/Playlists/mpd/$file.m3u" > "/home/[user]/Music/Playlists/$file.m3u"
 + echo "Converted single file using relative paths"
 + elif [ "$abs" = true ] && [ "$rel" = true ]
 + then
 + sed -e "s#^#/home/[user]/Music/#" "/home/[user]/Music/Playlists/mpd/$file.m3u" > "/home/[user]/Playlists/path_absolute/$file.m3u" &&
 + sed -e "s#^#../#" "/home/[user]/Music/Playlists/mpd/$file.m3u" > "/home/[user]/Music/Playlists/$file.m3u"
 + echo "Converted single file using absolute and relative paths"
 + fi
 +fi
 +</code>
  
 ===== Metaforms ===== ===== Metaforms =====
plaintext.txt · Last modified: 2024/03/02 18:03 by rjt