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--- plaintext [2020/10/25 13:32] – ↷ Page moved from form:plaintext to plaintext rjt
+++ plaintext [2024/03/02 18:03] (current) – Added some commands I use to work with playlists rjt
@@ Line 1: / Line 1: @@
 ====== 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 =====
@@ Line 8: / Line 98: @@
 ===== See Also =====
+{{tag>form text}}