+++ /dev/null
-#!/usr/bin/env perl
-# vim:ts=4:sw=4:expandtab
-#
-# © 2012 Michael Stapelberg
-#
-# No dependencies except for perl ≥ v5.10
-
-use strict;
-use warnings;
-use Data::Dumper;
-use IPC::Open2;
-use POSIX qw(locale_h);
-use File::Find;
-use File::Basename qw(basename);
-use File::Temp qw(tempfile);
-use Getopt::Long;
-use Pod::Usage;
-use v5.10;
-use utf8;
-use open ':encoding(utf8)';
-
-binmode STDOUT, ':utf8';
-binmode STDERR, ':utf8';
-
-# reads in a whole file
-sub slurp {
- open(my $fh, '<', shift) or die "$!";
- local $/;
- <$fh>;
-}
-
-my $entry_type = 'both';
-my $dmenu_cmd = 'dmenu -i';
-my $result = GetOptions(
- 'dmenu=s' => \$dmenu_cmd,
- 'entry-type=s' => \$entry_type,
- 'version' => sub {
- say "dmenu-desktop 1.1 © 2012 Michael Stapelberg";
- exit 0;
- },
- 'help' => sub {
- pod2usage(-exitval => 0);
- });
-
-die "Could not parse command line options" unless $result;
-
-# ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
-# ┃ Convert LC_MESSAGES into an ordered list of suffixes to search for in the ┃
-# ┃ .desktop files (e.g. “Name[de_DE@euro]” for LC_MESSAGES=de_DE.UTF-8@euro ┃
-# ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
-
-# For details on how the transformation of LC_MESSAGES to a list of keys that
-# should be looked up works, refer to “Localized values for keys” of the
-# “Desktop Entry Specification”:
-# http://standards.freedesktop.org/desktop-entry-spec/latest/ar01s04.html
-my $lc_messages = setlocale(LC_MESSAGES);
-
-# Ignore the encoding (e.g. .UTF-8)
-$lc_messages =~ s/\.[^@]+//g;
-
-my @suffixes = ($lc_messages);
-
-# _COUNTRY and @MODIFIER are present
-if ($lc_messages =~ /_[^@]+@/) {
- my $no_modifier = $lc_messages;
- $no_modifier =~ s/@.*//g;
- push @suffixes, $no_modifier;
-
- my $no_country = $lc_messages;
- $no_country =~ s/_[^@]+//g;
- push @suffixes, $no_country;
-}
-
-# Strip _COUNTRY and @MODIFIER if present
-$lc_messages =~ s/[_@].*//g;
-push @suffixes, $lc_messages;
-
-# ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
-# ┃ Read all .desktop files and store the values in which we are interested. ┃
-# ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
-
-my %desktops;
-# See http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html#variables
-my $xdg_data_home = $ENV{XDG_DATA_HOME};
-$xdg_data_home = $ENV{HOME} . '/.local/share' if
- !defined($xdg_data_home) ||
- $xdg_data_home eq '' ||
- ! -d $xdg_data_home;
-
-my $xdg_data_dirs = $ENV{XDG_DATA_DIRS};
-$xdg_data_dirs = '/usr/local/share/:/usr/share/' if
- !defined($xdg_data_dirs) ||
- $xdg_data_dirs eq '';
-
-my @searchdirs = ("$xdg_data_home/applications/");
-for my $dir (split(':', $xdg_data_dirs)) {
- push @searchdirs, "$dir/applications/";
-}
-
-# Cleanup the paths, maybe some application does not cope with double slashes
-# (the field code %k is replaced with the .desktop file location).
-@searchdirs = map { s,//,/,g; $_ } @searchdirs;
-
-# To avoid errors by File::Find’s find(), only pass existing directories.
-@searchdirs = grep { -d $_ } @searchdirs;
-
-find(
- {
- wanted => sub {
- return unless substr($_, -1 * length('.desktop')) eq '.desktop';
- my $relative = $File::Find::name;
-
- # + 1 for the trailing /, which is missing in ::topdir.
- substr($relative, 0, length($File::Find::topdir) + 1) = '';
-
- # Don’t overwrite files with the same relative path, we search in
- # descending order of importance.
- return if exists($desktops{$relative});
-
- $desktops{$relative} = $File::Find::name;
- },
- no_chdir => 1,
- },
- @searchdirs
-);
-
-my %apps;
-
-for my $file (values %desktops) {
- my $base = basename($file);
-
- # _ is an invalid character for a key, so we can use it for our own keys.
- $apps{$base}->{_Location} = $file;
-
- # Extract all “Name” and “Exec” keys from the [Desktop Entry] group
- # and store them in $apps{$base}.
- my %names;
- my @lines = split("\n", slurp($file));
- for my $line (@lines) {
- my $first = substr($line, 0, 1);
- next if $line eq '' || $first eq '#';
- next unless ($line eq '[Desktop Entry]' ..
- ($first eq '[' &&
- substr($line, -1) eq ']' &&
- $line ne '[Desktop Entry]'));
- next if $first eq '[';
-
- my ($key, $value) = ($line =~ /^
- (
- [A-Za-z0-9-]+ # the spec specifies these as valid key characters
- (?:\[[^]]+\])? # possibly, there as a locale suffix
- )
- \s* = \s* # whitespace around = should be ignored
- (.*) # no restrictions on the values
- $/x);
-
- if ($key =~ /^Name/) {
- $names{$key} = $value;
- } elsif ($key eq 'Exec' ||
- $key eq 'TryExec') {
- $apps{$base}->{$key} = $value;
- } elsif ($key eq 'NoDisplay' ||
- $key eq 'Hidden' ||
- $key eq 'StartupNotify' ||
- $key eq 'Terminal') {
- # Values of type boolean must either be string true or false,
- # see “Possible value types”:
- # http://standards.freedesktop.org/desktop-entry-spec/latest/ar01s03.html
- $apps{$base}->{$key} = ($value eq 'true');
- }
- }
-
- for my $suffix (@suffixes) {
- next unless exists($names{"Name[$suffix]"});
- $apps{$base}->{Name} = $names{"Name[$suffix]"};
- last;
- }
-
- # Fallback to unlocalized “Name”.
- $apps{$base}->{Name} = $names{Name} unless exists($apps{$base}->{Name});
-}
-
-# %apps now looks like this:
-#
-# %apps = {
-# 'evince.desktop' => {
-# 'Exec' => 'evince %U',
-# 'Name' => 'Dokumentenbetrachter',
-# '_Location' => '/usr/share/applications/evince.desktop'
-# },
-# 'gedit.desktop' => {
-# 'Exec' => 'gedit %U',
-# 'Name' => 'gedit',
-# '_Location' => '/usr/share/applications/gedit.desktop'
-# }
-# };
-
-# ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
-# ┃ Turn %apps inside out to provide Name → filename lookup. ┃
-# ┃ The Name is what we display in dmenu later. ┃
-# ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
-
-my %choices;
-for my $app (keys %apps) {
- my $name = $apps{$app}->{Name};
-
- # Don’t offer apps which have NoDisplay == true or Hidden == true.
- # See http://wiki.xfce.org/howto/customize-menu#hide_menu_entries
- # for the difference between NoDisplay and Hidden.
- next if (exists($apps{$app}->{NoDisplay}) && $apps{$app}->{NoDisplay}) ||
- (exists($apps{$app}->{Hidden}) && $apps{$app}->{Hidden});
-
- if (exists($apps{$app}->{TryExec})) {
- my $tryexec = $apps{$app}->{TryExec};
- if (substr($tryexec, 0, 1) eq '/') {
- # Skip if absolute path is not executable.
- next unless -x $tryexec;
- } else {
- # Search in $PATH for the executable.
- my $found = 0;
- for my $path (split(':', $ENV{PATH})) {
- next unless -x "$path/$tryexec";
- $found = 1;
- last;
- }
- next unless $found;
- }
- }
-
- if ($entry_type eq 'name' || $entry_type eq 'both') {
- if (exists($choices{$name})) {
- # There are two .desktop files which contain the same “Name” value.
- # I’m not sure if that is allowed to happen, but we disambiguate the
- # situation by appending “ (2)”, “ (3)”, etc. to the name.
- #
- # An example of this happening is exo-file-manager.desktop and
- # thunar-settings.desktop, both of which contain “Name=File Manager”.
- my $inc = 2;
- $inc++ while exists($choices{"$name ($inc)"});
- $name = "$name ($inc)";
- }
-
- $choices{$name} = $app;
- }
-
- if ($entry_type eq 'command' || $entry_type eq 'both') {
- my ($command) = split(' ', $apps{$app}->{Exec});
- $choices{basename($command)} = $app;
- }
-}
-
-# %choices now looks like this:
-#
-# %choices = {
-# 'Dokumentenbetrachter' => 'evince.desktop',
-# 'gedit' => 'gedit.desktop'
-# };
-
-# ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
-# ┃ Run dmenu to ask the user for her choice ┃
-# ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
-
-# open2 will just make dmenu’s STDERR go to our own STDERR.
-my ($dmenu_out, $dmenu_in);
-my $pid = open2($dmenu_out, $dmenu_in, $dmenu_cmd);
-binmode $dmenu_in, ':utf8';
-binmode $dmenu_out, ':utf8';
-
-# Feed dmenu the possible choices.
-say $dmenu_in $_ for sort keys %choices;
-close($dmenu_in);
-
-waitpid($pid, 0);
-my $status = ($? >> 8);
-
-# Pass on dmenu’s exit status if there was an error.
-exit $status unless $status == 0;
-
-my $choice = <$dmenu_out>;
-my $app;
-# Exact match: the user chose “Avidemux (GTK+)”
-if (exists($choices{$choice})) {
- $app = $apps{$choices{$choice}};
- $choice = '';
-} else {
- # Not an exact match: the user entered “Avidemux (GTK+) ~/movie.mp4”
- for my $possibility (keys %choices) {
- next unless substr($choice, 0, length($possibility)) eq $possibility;
- $app = $apps{$choices{$possibility}};
- substr($choice, 0, length($possibility)) = '';
- # Remove whitespace separating the entry and arguments.
- $choice =~ s/^\s//g;
- last;
- }
- if (!defined($app)) {
- die "Invalid input: “$choice” does not match any application.";
- }
-}
-
-# ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
-# ┃ Make i3 start the chosen application. ┃
-# ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
-
-my $name = $app->{Name};
-my $exec = $app->{Exec};
-my $location = $app->{_Location};
-
-# Quote as described by “The Exec key”:
-# http://standards.freedesktop.org/desktop-entry-spec/latest/ar01s06.html
-sub quote {
- my ($str) = @_;
- $str =~ s/("|`|\$|\\)/\\$1/g;
- $str = qq|"$str"| if $str ne "";
- return $str;
-}
-
-$choice = quote($choice);
-$location = quote($location);
-
-# Remove deprecated field codes, as the spec dictates.
-$exec =~ s/%[dDnNvm]//g;
-
-# Replace filename field codes with the rest of the command line.
-# Note that we assume the user uses precisely one file name,
-# not multiple file names.
-$exec =~ s/%[fF]/$choice/g;
-
-# If the program works with URLs,
-# we assume the user provided a URL instead of a filename.
-# As per the spec, there must be at most one of %f, %u, %F or %U present.
-$exec =~ s/%[uU]/$choice/g;
-
-# The translated name of the application.
-$exec =~ s/%c/$name/g;
-
-# XXX: Icons are not implemented. Is the complexity (looking up the path if
-# only a name is given) actually worth it?
-#$exec =~ s/%i/--icon $icon/g;
-
-# location of .desktop file
-$exec =~ s/%k/$location/g;
-
-# Literal % characters are represented as %%.
-$exec =~ s/%%/%/g;
-
-my $nosn = '';
-my $cmd;
-if (exists($app->{Terminal}) && $app->{Terminal}) {
- # For applications which specify “Terminal=true” (e.g. htop.desktop),
- # we need to create a temporary script that contains the full command line
- # as the syntax for starting commands with arguments varies from terminal
- # emulator to terminal emulator.
- # Then, we launch that script with i3-sensible-terminal.
- my ($fh, $filename) = tempfile();
- binmode($fh, ':utf8');
- say $fh <<EOT;
-#!/bin/sh
-rm $filename
-exec $exec
-EOT
- close($fh);
- chmod 0755, $filename;
-
- $cmd = qq|exec i3-sensible-terminal -e "$filename"|;
-} else {
- # i3 executes applications by passing the argument to i3’s “exec” command
- # as-is to $SHELL -c. The i3 parser supports quoted strings: When a string
- # starts with a double quote ("), everything is parsed as-is until the next
- # double quote which is NOT preceded by a backslash (\).
- #
- # Therefore, we escape all double quotes (") by replacing them with \"
- $exec =~ s/"/\\"/g;
-
- if (exists($app->{StartupNotify}) && !$app->{StartupNotify}) {
- $nosn = '--no-startup-id';
- }
- $cmd = qq|exec $nosn "$exec"|;
-}
-
-system('i3-msg', $cmd) == 0 or die "Could not launch i3-msg: $?";
-
-=encoding utf-8
-
-=head1 NAME
-
- i3-dmenu-desktop - run .desktop files with dmenu
-
-=head1 SYNOPSIS
-
- i3-dmenu-desktop [--dmenu='dmenu -i'] [--entry-type=both]
-
-=head1 DESCRIPTION
-
-i3-dmenu-desktop is a script which extracts the (localized) name from
-application .desktop files, offers the user a choice via dmenu(1) and then
-starts the chosen application via i3 (for startup notification support).
-The advantage of using .desktop files instead of dmenu_run(1) is that dmenu_run
-offers B<all> binaries in your $PATH, including non-interactive utilities like
-"sed". Also, .desktop files contain a proper name, information about whether
-the application runs in a terminal and whether it supports startup
-notifications.
-
-The .desktop files are searched in $XDG_DATA_HOME/applications (by default
-$HOME/.local/share/applications) and in the "applications" subdirectory of each
-entry of $XDG_DATA_DIRS (by default /usr/local/share/:/usr/share/).
-
-Files with the same name in $XDG_DATA_HOME/applications take precedence over
-files in $XDG_DATA_DIRS, so that you can overwrite parts of the system-wide
-.desktop files by copying them to your local directory and making changes.
-
-i3-dmenu-desktop displays the "Name" value in the localized version depending
-on LC_MESSAGES as specified in the Desktop Entry Specification.
-
-You can pass a filename or URL (%f/%F and %u/%U field codes in the .desktop
-file respectively) by appending it to the name of the application. E.g., if you
-want to launch "GNU Emacs 24" with the patch /tmp/foobar.txt, you would type
-"emacs", press TAB, type " /tmp/foobar.txt" and press ENTER.
-
-.desktop files with Terminal=true are started using i3-sensible-terminal(1).
-
-.desktop files with NoDisplay=true or Hidden=true are skipped.
-
-UTF-8 is supported, of course, but dmenu does not support displaying all
-glyphs. E.g., xfce4-terminal.desktop's Name[fi]=Pääte will be displayed just
-fine, but not its Name[ru]=Терминал.
-
-=head1 OPTIONS
-
-=over
-
-=item B<--dmenu=command>
-
-Execute command instead of 'dmenu -i'. This option can be used to pass custom
-parameters to dmenu, or to make i3-dmenu-desktop start a custom (patched?)
-version of dmenu.
-
-=item B<--entry-type=type>
-
-Display the (localized) "Name" (type = name) or the command (type = command) or
-both (type = both) in dmenu.
-
-Examples are "GNU Image Manipulation Program" (type = name), "gimp" (type =
-command) and both (type = both).
-
-=back
-
-=head1 VERSION
-
-Version 1.1
-
-=head1 AUTHOR
-
-Michael Stapelberg, C<< <michael at i3wm.org> >>
-
-=head1 LICENSE AND COPYRIGHT
-
-Copyright 2012 Michael Stapelberg.
-
-This program is free software; you can redistribute it and/or modify it
-under the terms of the BSD license.
-
-=cut
projects / i3 / i3 / blobdiff