#!/usr/bin/perl
##############################################################################
# generates a file.menu format for Enlightenment out of menu hierarchies
#
# Copyright (C) 2003-2005 Kim Woelders
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies of the Software, its documentation and marketing & publicity
# materials, and acknowledgment shall be given in the documentation, materials
# and software packages that this Software was used.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
##############################################################################

# Likely  prefixes
$Prefixes = "/usr/local:/usr:/opt:/opt/kde:$ENV{'KDEDIR'}";
$Prefixes = RemoveDuplcates($Prefixes);

# Where to look for GNOME2/KDE2,3 stuff
$AppDirs = MkDirList($Prefixes, "/share/applications:/share/applications/kde");

$IconDirs = MkDirList($Prefixes, "/share/pixmaps");
$IconDirsKDE = MkDirList($Prefixes, "/share/icons");
$Themes = "default.kde:hicolor:locolor";

# Where to look for GNOME1 apps
$OldGnomeDirs = MkDirList($Prefixes, "/share/gnome/apps");
# Where to look for KDE1/2 apps
$OldKdeDirs = MkDirList($Prefixes, "/share/applnk");

# Pick up env vars
$EdirUser = "$ENV{'ECONFDIR'}";
$EdirRoot = "$ENV{'EROOT'}";
$EdirBin  = "$ENV{'EBIN'}";

# Localization bits. There may be better ways to do this.
$Lang = "$ENV{'LANG'}";
$loc1 = $loc2 = $loc3 = $Lang;
$loc2 =~ s/[\.\@].*//;
$loc3 =~ s/_.*//;
$loc1 = "" if ($loc1 eq $loc2);

$EdirUser = "$ENV{'HOME'}/.e16" unless $EdirUser;
$EdirRoot = "/usr/share/enlightenment" unless $EdirRoot;
$EdirBin  = "/usr/bin" unless $EdirBin;

$EdirIcons = "$EdirUser/icons";
$EdirMenus = "$EdirUser/menus";

$dbg      = "$ENV{'E_MENUGEN_DBG'}";

# Put EBIN first in path
$ENV{'PATH'} = "$EdirBin:$ENV{'PATH'}";

# Programs
$DoConvert = `which convert`;
$DoIconv = `which iconv`;

@CatsRemove = (
	"Qt",
	"QT",
	"GNOME",
	"KDE",
	"UtilityApplication",
	"Applications",
	"Application",
	"X-Red-Hat-Base-Only",
	"X-Red-Hat-BaseApplication",
	"X-Red-Hat-Base",
	"X-Red-Hat-ServerConfig",
	"X-Red-Hat-Extra",
	"X-KDE-information",
	"X-KDE-settings-accessibility",
	"X-KDE-settings-components",
	"X-KDE-settings-desktop",
	"X-KDE-settings-looknfeel",
	"X-KDE-settings-network",
	"X-KDE-settings-peripherals",
	"X-KDE-settings-power",
	"X-KDE-settings-security",
	"X-KDE-settings-sound",
	"X-KDE-settings-system",
	"X-KDE-settings-webbrowsing"
);

@MainMenu = (
	"t:User Menus",
	"m:User Application list:menus/user_apps.menu",
	"m:GNOME:menus/menus_GNOME/index.menu",
	"m:KDE:menus/menus_KDE/index.menu",
	"m:Other:menus/menus_Other/index.menu",
	"m:Enlightenment Epplets:menus/epplets.menu",
	"c:Restart Enlightenment:exit restart",
	"c:Log Out:exit logout"
);

@UserAppsMenu = (
	"t:User Application List",
	"x:Eterm:Eterm",
	"x:XTerm:xterm",
	"x:RXVT:rxvt",
	"x:Mozilla:mozilla",
	"x:Firefox:firefox",
	"x:Galeon:galeon",
	"x:Opera:opera",
	"x:Electric Eyes:ee",
	"x:Gmplayer:gmplayer",
	"x:Xine:xine",
	"x:The GIMP:gimp",
	"x:XV:xv",
	"x:GQView:gqview",
	"x:Gaim:gaim",
	"x:Grip:grip",
	"x:Xchat:xchat",
	"x:Xchat2:xchat2",
	"x:Xchat2:xchat-2",
	"x:XMag:xmag",
	"x:XMMS:xmms"
);

# Remove duplicates and nulls in ':' separated dir list
sub RemoveDuplcates {
	local $dl = shift;
	local @r;
	local %h;
	foreach $p (split(':', $dl)) {
		next unless $p;
		next if $h{$p};
		$h{$p} = $p;
		push @r, $p;
	}
	return join(':', @r);
}

# Make : separated directory list, check that they exist
sub MkDirList {
	local $dl = shift;
	local $sf = shift;
	local $d;
	local @r;
	foreach $p (split(':', $dl)) {
		foreach $q (split(':', $sf)) {
			$d = "$p$q";
			push(@r, "$d") if -d "$d";
		}
	}
	return join(':', @r);
}

# Make dir if non-existing
sub MkDir {
	local $d = shift;
	mkdir("$d") unless (-d "$d");
}

# Make simple menus
sub MakeMenu {
	local $f = shift;
	local $m = shift;

	$f = "$EdirMenus/$f";
	return if (-f "$f");
	open(FD, ">$f");
	foreach $e (@$m) {
		($t, $n, $p) = split(':', $e);
		if ($t eq "t") {
			print FD "\"$n\"\n";
		} elsif ($t eq "m") {
			print FD "\"$n\" NULL menu \"$p\"\n";
		} elsif ($t eq "x") {
			print FD "\"$n\" NULL exec \"$p\"\n";
		} elsif ($t eq "c") {
			print FD "\"$n\" NULL \"$p\"\n";
		}
	}
	close(FD);
}

# Process a .desktop file
sub ProcessFile {
	local $f = shift;
	local $Name, $Exec, $Icon, $Cats, $Type, $File;
	local $c;

	if (! -f "$f")  {
		print "Not found: $f\n" if $dbg ge 1;
		return;
	}

	# Global ref no
	$N++;

	$Name = $Exec = $Icon = "";
	$Nam1 = $Nam2 = $Nam3 = "";
	$Cats = shift;
	$Type = shift;

	open(FI,$f) or return;
	while (<FI>) {
		if (/^Name=(.*)$/) {
			$Name = $1;
		} elsif ($loc1 && /^Name\[$loc1\]=(.*)$/) {
			$Nam1 = $1;
		} elsif ($loc2 && /^Name\[$loc2\]=(.*)$/) {	
			$Nam2 = $1;
		} elsif ($loc3 && /^Name\[$loc3\]=(.*)$/) {	
			$Nam3 = $1;
		} elsif (/^Exec=(.*)$/) {
			$Exec = $1;
		} elsif (/^Icon=(.*)$/) {
			$Icon = $1;
		} elsif (/^OnlyShowIn=(.*);$/) {
			$Type = $1;
		} elsif (/^Categories=(.*)$/) {
			next if "$Cats";	# Given
			$Cats = $1;
			foreach $c (@CatsRemove) { $Cats =~ s/(^|;)$c;*/\1/g; }
		} elsif (/^Type=(.*)$/) {
			if ($1 ne "Application") {
				$Name = "";
				last;
			}
		}
		if ($Nam1 || $Nam2 || $Nam3) {
			if    ($Nam1) { $Name = $Nam1; }
			elsif ($Nam2) { $Name = $Nam2; }
			else          { $Name = $Nam3; }
			$Name = `echo "$Name" | iconv -f UTF-8` if $DoIconv;
			chomp($Name);
		}
	}
	close FI;

	$Cats =~ s/ +$//;
	if (!$Name || !$Exec || !$Cats) {
		printf("Skipped: %-24s %-24s %-20s %-20s %s\n",
			$f, $Name, $Exec, $Icon, $Cats) if $dbg ge 1;
		return;
	}

	# Basename
	$File = $f; $File =~ s/^.*\///;

	printf("%-24s: %-24s %-20s %-20s %s\n",
		$File, $Name, $Exec, $Icon, $Cats) if $dbg ge 3;

	if (!$Type) {
		if      ($File =~ /^gnome/) {
			$Type = "GNOME";
		} elsif ($File =~ /^kde/) {
			$Type = "KDE";
		} else {
			$Type = "Other";
		}
	}

	$Namx = "$Name-$N";	# Make key unique
	$Namx =~ tr/A-Z/a-z/;	# To lower case (for sorting)
	$File{$Namx} = $File;
	$Name{$Namx} = $Name;
	$Exec{$Namx} = $Exec;
	$Icon{$Namx} = $Icon;
	$Cats{$Namx} = $Cats;
	$Type{$Namx} = $Type;
}

# Process all .desktop files in a directory
sub ProcessDir {
	local $d = shift;
	local $dx = shift;
	local $t = shift;
	local @l;
	local $f;

	@l = grep /\.desktop$/, ReadDir($d);
	foreach $f (@l) {
		$f = "$d/$f";
		print "- File $f\n" if $dbg ge 2;
		ProcessFile("$f", "$dx", "$t");
	}
}

# Process old style GNOME/KDE directories
sub ProcessOldStyle {
	local $t = shift;
	local $dl = shift;
	local $d, $d2;
	local @d2l;

	foreach $d (split(':', $dl)) {
		print "Processing directory: $d\n" if $dbg ge 1;
		if (! -d "$d") {
			print "- Not found\n" if $dbg ge 1;
			next;
		}
		@d2l = grep !/^\./, ReadDir($d);
		foreach $d2 (@d2l) {
			print " Subdir: $d/$d2\n" if $dbg ge 1;
			next unless -d "$d/$d2";
			ProcessDir("$d/$d2", "$d2", "$t");
		}
	}
}

# Create scaled 18x18 pixel icon
sub ScaleIcon {
	local $f = shift;
	local $g = $f;

	return $f unless $DoConvert;

	$g =~ s/^.*\///;
	$g =~ s/\..*$//;
	$g = "$EdirIcons/$g.png";
	system("convert -geometry 18x18 $f $g");

	return $g;
}

# Find that $#@! thing
sub FindIcon {
	local $f = shift;

	return $f if (! $f);

	if (-f $f) {
		$i = ScaleIcon($f);
		return $i;
	}

	foreach $d (split(':', $IconDirs)) {
		$i = "$d/$f";
		next unless -f $i;
		$i = ScaleIcon($i);
		return $i;
	}

	foreach $d (split(':', $IconDirsKDE)) {
		foreach $t (split(':', $Themes)) {
			foreach $u (split(':', "apps:filesystems:actions")) {
				$i = "$d/$t/16x16/$u/$f";
				$i = "$i.png" unless ($f =~ /\.png$/);
				print "Testing $i\n" if $dbg >= 2;
				return $i if -f $i;
			}
		}
	}

	return $f;
}

# Make the Epplets menu
sub MakeEppsMenu {
	local $f = shift;
	local $d;
	local %done;
	open(FD, ">$EdirMenus/$f");
	print FD "\"Enlightenment Epplets\"\n";
	foreach $d (split(':', $ENV{'PATH'})) {
		next unless -d $d;
		next if ($done{$d});
		$done{$d} = 1;
		print "Looking for epplets in $d\n" if $dbg ge 1;
		@el = grep /\.epplet$/, ReadDir($d);
		foreach $e (@el) {
			$e =~ s/\.epplet$//;
			$i = "$EdirRoot/epplet_icons/$e.icon";
			$i = ScaleIcon("$i") if -f "$i";
			print FD "\"$e\" \"$i\" exec \"$d/$e.epplet\"\n";
		}
	}
	close(FD);
}

# Make the menu for a given app type
sub MakeAppsMenu {
	local $type = shift;
	local %menus;
	local $c, $k, $dir;

	$dir = "$EdirMenus/menus_$type";
	print "Generating Menu: $type in $dir\n" if $dbg ge 1;
	MkDir($dir);

	# Sort the apps into categories
	foreach $k (sort(keys(%Name))) {
		next if ($Type{$k} ne $type);
		$c = $Cats{$k};
		$c =~ s/;.*$//;
#		$menus{$c} = $k;
		push(@{$menus{$c}}, $k);
	}

	# Make top- and sub-menus
	open(FTopM, ">$dir/index.menu") or die "*** Couldn't create $dir/index.menu\n";
	print FTopM "\"$type Menu\"\n";
	foreach $m (sort(keys(%menus))) {
		open(FSubM, ">$dir/$m.menu") or die "*** Couldn't create $dir/$m.menu\n";
		print "- Submenu: $m\n" if $dbg ge 2;
		print FTopM "\"$m\" \"\" menu \"$dir/$m.menu\"\n";
		print FSubM "\"$m\"\n";
		foreach $k (sort(@{$menus{$m}})) {
			print " - Item: $k\n" if $dbg ge 2;
			$icon = FindIcon($Icon{$k});
			@exec = split(' ', $Exec{$k});
			$exec = @exec[0];
			printf FSubM "\"%s\" \"%s\" exec \"%s\"\n",
				$Name{$k}, $icon, $exec;
		}
		close(FSubM);
	}
	close(FTopM);
}

# Return list of files in dir
sub ReadDir {
	local $dir = shift;
	local @dirs;
	opendir DH, $dir or die "*** Not a directory: $dir\n";
	@dirs = readdir DH;
	closedir DH;
	return @dirs;
}

# Close all windows named "Message" (we assume they are E dialogs)
sub CloseMessageWindows {
	open(WL, "eesh -ewait wl |");
	while (<WL>) {
		if (/\s*(\w+) : Message\s/) {
			system("eesh -e \"wop $1 close\"");
		}
	}
	close(WL);
}


##############################################################################
# Here we go
##############################################################################
$N = 0;

CloseMessageWindows();
system("eesh -e \"dialog_ok Menus are being generated... Please Wait.\"");

# Process old style GNOME directories
ProcessOldStyle("GNOME", "$OldGnomeDirs");

# Process old style KDE directories
ProcessOldStyle("KDE", "$OldKdeDirs");

# Process new style (GNOME2, KDE2/3) directories
foreach $d (split(':', $AppDirs)) {
	print "Processing directory: $d\n" if $dbg ge 1;
	if (! -d $d) {
		print "- Not found\n" if $dbg ge 1;
		next;
	}
	ProcessDir($d);
}

# Make menu dir and scaled icon dir
MkDir("$EdirMenus");
MkDir("$EdirIcons");

# Make the menus
MakeMenu("file.menu", \@MainMenu);
MakeMenu("user_apps.menu", \@UserAppsMenu);
MakeEppsMenu("epplets.menu");
MakeAppsMenu("GNOME");
MakeAppsMenu("KDE");
MakeAppsMenu("Other");

CloseMessageWindows();
system("eesh -e 'menus reload'");
system("eesh -e 'dialog_ok Menu generation complete.'");