364 lines
11 KiB
Perl
Executable File
364 lines
11 KiB
Perl
Executable File
#!/usr/bin/env perl
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# vim:ts=4:sw=4:expandtab
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#
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# script to migrate an old config file (i3 < 4.0) to the new format (>= 4.0)
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# this script only uses modules which come with perl 5.10
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#
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# reads an i3 v3 config from stdin and spits out a v4 config on stdout
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# exit codes:
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# 0 = the input was a v3 config
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# 1 = the input was already a v4 config
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# (the config is printed to stdout nevertheless)
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#
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# © 2011 Michael Stapelberg and contributors, see LICENSE
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use strict;
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use warnings;
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use Getopt::Long;
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use v5.10;
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# is this a version 3 config file? disables auto-detection
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my $v3 = 0;
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my $result = GetOptions('v3' => \$v3);
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# reads stdin
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sub slurp {
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local $/;
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<>;
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}
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my @unchanged = qw(
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font
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set
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mode
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exec
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assign
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floating_modifier
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focus_follows_mouse
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ipc-socket
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ipc_socket
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client.focused
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client.focused_inactive
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client.unfocused
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client.urgent
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client.background
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);
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my %workspace_names;
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my $workspace_bar = 1;
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my $input = slurp();
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my @lines = split /\n/, $input;
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# remove whitespaces in the beginning of lines
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@lines = map { s/^[ \t]*//g; $_ } @lines;
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# Try to auto-detect if this is a v3 config file.
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sub need_to_convert {
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# If the user passed --v3, we need to convert in any case
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return 1 if $v3;
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for my $line (@lines) {
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# only v4 configfiles can use bindcode or workspace_layout
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return 0 if $line =~ /^bindcode/ ||
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$line =~ /^workspace_layout/ ||
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$line =~ /^force_focus_wrapping/;
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# have a look at bindings
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next unless $line =~ /^bind/;
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my ($statement, $key, $command) = ($line =~ /([a-zA-Z_-]+)[ \t]+([^ \t]+)[ \t]+(.*)/);
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return 0 if $command =~ /^layout/ ||
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$command =~ /^floating/ ||
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$command =~ /^workspace/ ||
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$command =~ /^focus (left|right|up|down)/ ||
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$command =~ /^border (normal|1pixel|none)/;
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}
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return 1;
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}
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if (!need_to_convert()) {
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# If this is already a v4 config file, we will spit out the lines
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# and exit with return code 1
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print $input;
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exit 1;
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}
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# first pass: get workspace names
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for my $line (@lines) {
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next if $line =~ /^#/ || $line =~ /^$/;
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my ($statement, $parameters) = ($line =~ /([a-zA-Z._-]+)(.*)/);
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# skip everything but workspace lines
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next unless defined($statement) and $statement eq 'workspace';
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my ($number, $params) = ($parameters =~ /[ \t]+([0-9]+) (.+)/);
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# save workspace name (unless the line is actually a workspace assignment)
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$workspace_names{$number} = $params unless $params =~ /^output/;
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}
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for my $line (@lines) {
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# directly use comments and empty lines
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if ($line =~ /^#/ || $line =~ /^$/) {
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print "$line\n";
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next;
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}
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my ($statement, $parameters) = ($line =~ /([a-zA-Z._-]+)(.*)/);
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# directly use lines which have not changed between 3.x and 4.x
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if (!defined($statement) || (lc $statement ~~ @unchanged)) {
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print "$line\n";
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next;
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}
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# new_container changed only the statement name to workspace_layout
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if ($statement eq 'new_container') {
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# TODO: new_container stack-limit
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print "workspace_layout$parameters\n";
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next;
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}
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# workspace_bar is gone, you should use i3bar now
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if ($statement eq 'workspace_bar') {
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$workspace_bar = ($parameters =~ /[ \t+](yes|true|on|enable|active)/);
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print "# XXX: REMOVED workspace_bar line. There is no internal workspace bar in v4.\n";
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next;
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}
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# new_window changed the parameters from bb to none etc.
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if ($statement eq 'new_window') {
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if ($parameters =~ /bb/) {
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print "new_window none\n";
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} elsif ($parameters =~ /bp/) {
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print "new_window 1pixel\n";
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} elsif ($parameters =~ /bn/) {
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print "new_window normal\n";
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} else {
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print "# XXX: Invalid parameter for new_window, not touching line:\n";
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print "$line\n";
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}
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next;
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}
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# bar colors are obsolete, need to be configured in i3bar
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if ($statement =~ /^bar\./) {
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print "# XXX: REMOVED $statement, configure i3bar instead.\n";
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print "# Old line: $line\n";
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next;
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}
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# one form of this is still ok (workspace assignments), the other (named workspaces) isn’t
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if ($statement eq 'workspace') {
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my ($number, $params) = ($parameters =~ /[ \t]+([0-9]+) (.+)/);
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if ($params =~ /^output/) {
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print "$line\n";
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next;
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} else {
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print "# XXX: workspace name will end up in the corresponding bindings.\n";
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next;
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}
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}
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if ($statement eq 'bind' || $statement eq 'bindsym') {
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convert_command($line);
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next;
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}
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print "# XXX: migration script could not handle line: $line\n";
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}
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#
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# Converts a command (after bind/bindsym)
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#
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sub convert_command {
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my ($line) = @_;
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my @unchanged_cmds = qw(
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exec
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mark
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kill
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restart
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reload
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exit
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stack-limit
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);
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my ($statement, $key, $command) = ($line =~ /([a-zA-Z_-]+)[ \t]+([^ \t]+)[ \t]+(.*)/);
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# turn 'bind' to 'bindcode'
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$statement = 'bindcode' if $statement eq 'bind';
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# check if it’s one of the unchanged commands
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my ($cmd) = ($command =~ /([a-zA-Z_-]+)/);
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if ($cmd ~~ @unchanged_cmds) {
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print "$statement $key $command\n";
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return;
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}
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# simple replacements
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my @replace = (
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qr/^s/ => 'layout stacking',
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qr/^d/ => 'layout default',
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qr/^T/ => 'layout tabbed',
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qr/^f($|[^go])/ => 'fullscreen',
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qr/^fg/ => 'fullscreen global',
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qr/^t/ => 'floating toggle',
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qr/^h/ => 'focus left',
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qr/^j($|[^u])/ => 'focus down',
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qr/^k/ => 'focus up',
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qr/^l/ => 'focus right',
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qr/^mh/ => 'move left',
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qr/^mj/ => 'move down',
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qr/^mk/ => 'move up',
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qr/^ml/ => 'move right',
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qr/^bn/ => 'border normal',
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qr/^bp/ => 'border 1pixel',
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qr/^bb/ => 'border none',
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qr/^bt/ => 'border toggle',
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qr/^pw/ => 'workspace prev',
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qr/^nw/ => 'workspace next',
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);
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my $replaced = 0;
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for (my $c = 0; $c < @replace; $c += 2) {
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if ($command =~ $replace[$c]) {
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$command = $replace[$c+1];
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$replaced = 1;
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last;
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}
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}
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# goto command is now obsolete due to criteria + focus command
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if ($command =~ /^goto/) {
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my ($mark) = ($command =~ /^goto (.*)/);
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print qq|$statement $key [con_mark="$mark"] focus\n|;
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return;
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}
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# the jump command is also obsolete due to criteria + focus
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if ($command =~ /^jump/) {
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my ($params) = ($command =~ /^jump (.*)/);
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if ($params =~ /^"/) {
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# jump ["]window class[/window title]["]
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($params) = ($params =~ /^"([^"]+)"/);
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# check if a window title was specified
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if ($params =~ m,/,) {
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my ($class, $title) = ($params =~ m,([^/]+)/(.+),);
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print qq|$statement $key [class="$class" title="$title"] focus\n|;
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} else {
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print qq|$statement $key [class="$params"] focus\n|;
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}
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return;
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} else {
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# jump <workspace> [ column row ]
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print "# XXX: jump workspace is obsolete in 4.x: $line\n";
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return;
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}
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}
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if (!$replaced && $command =~ /^focus/) {
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my ($what) = ($command =~ /^focus (.*)/);
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$what =~ s/[ \t]//g;
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if ($what eq 'ft') {
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$what = 'mode_toggle';
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} elsif ($what eq 'floating' || $what eq 'tiling') {
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# those are unchanged
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} else {
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print "# XXX: focus <number> is obsolete in 4.x: $line\n";
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return;
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}
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print qq|$statement $key focus $what\n|;
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return;
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}
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if ($command =~ /^mode/) {
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my ($parameters) = ($command =~ /^mode (.*)/);
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print qq|$statement $key mode "$parameters"\n|;
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return;
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}
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# the parameters of the resize command have changed
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if ($command =~ /^resize/) {
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# OLD: resize <left|right|top|bottom> [+|-]<pixels>\n")
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# NEW: resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt]
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my ($direction, $sign, $px) = ($command =~ /^resize (left|right|top|bottom) ([+-])([0-9]+)/);
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my $cmd = 'resize ';
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$cmd .= ($sign eq '+' ? 'grow' : 'shrink') . ' ';
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if ($direction eq 'top') {
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$direction = 'down';
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} elsif ($direction eq 'bottom') {
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$direction = 'up';
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}
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$cmd .= "$direction ";
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$cmd .= "$px px";
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print qq|$statement $key $cmd\n|;
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return;
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}
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# switch workspace
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if ($command =~ /^[0-9]+/) {
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my ($number) = ($command =~ /^([0-9]+)/);
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if (exists $workspace_names{$number}) {
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print qq|$statement $key workspace $workspace_names{$number}\n|;
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return;
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} else {
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print qq|$statement $key workspace $number\n|;
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return;
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}
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}
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# move to workspace
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if ($command =~ /^m[0-9]+/) {
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my ($number) = ($command =~ /^m([0-9]+)/);
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if (exists $workspace_names{$number}) {
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print qq|$statement $key move workspace $workspace_names{$number}\n|;
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return;
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} else {
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print qq|$statement $key move workspace $number\n|;
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return;
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}
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}
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# With Container-commands are now obsolete due to different abstraction
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if ($command =~ /^wc/) {
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$command =~ s/^wc//g;
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my $wc_replaced = 0;
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for (my $c = 0; $c < @replace; $c += 2) {
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if ($command =~ $replace[$c]) {
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$command = $replace[$c+1];
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$wc_replaced = 1;
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last;
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}
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}
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if (!$wc_replaced) {
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print "# XXX: migration script could not handle command: $line\n";
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} else {
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# NOTE: This is not 100% accurate, as it only works for one level
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# of nested containers. As this is a common use case, we use 'focus
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# parent; $command' nevertheless. For advanced use cases, the user
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# has to modify his config.
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print "$statement $key focus parent; $command\n";
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}
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return;
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}
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if ($replaced) {
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print "$statement $key $command\n";
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} else {
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print "# XXX: migration script could not handle command: $line\n";
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}
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}
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# add an i3bar invocation automatically if no 'workspace_bar no' was found
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if ($workspace_bar) {
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print "\n";
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print "# XXX: Automatically added a call to i3bar to provide a workspace bar\n";
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print "exec i3status | i3bar -d\n";
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}
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