#!/usr/bin/env perl

## getnonfreefonts
## Copyright 2006 Reinhard Kotucha <reinhard.kotucha@web.de>
#
# This work may be distributed and/or modified under the
# conditions of the LaTeX Project Public License, either version 1.3
# of this license or (at your option) any later version.
# The latest version of this license is in
#   http://www.latex-project.org/lppl.txt
# 
# The current maintainer is Reinhard Kotucha.

my $TL_version='2006';

my $getfont_url="ftp://tug.org/tex/getnonfreefonts/getfont$TL_version";

use File::Copy;
use Getopt::Long;
$Getopt::Long::autoabbrev=0;

$opt_lsfonts=0;
$opt_force=0;

sub usage {
    print <<'EOF';
Usage:
    getnonfreefonts[-sys] [-a|--all] [-d|--debug] [-f|--force]
        [-l|--lsfonts] [-v|--verbose] [--version] [font1] [font2] ...

    getnonfreefonts installs fonts in $TEXMFHOME.
    getnonfreefonts-sys installs fonts in $TEXMFLOCAL.

    Options:
        -a|--all      Install all fonts.

        -d|--debug    Provide additional messages for debugging.

        -f|--force    Install fonts even if they are installed already.

        -h|--help     Print this message.

        -l|--lsfonts  List all fonts available.

        -v|--verbose  Be more verbose.

        --version     Print version number.

EOF
;
}

unless (@ARGV) {
    usage;
    exit 1;
}

GetOptions 
    "all|a",
    "debug|d",
    "force|f",
    "help|h",
    "lsfonts|l",
    "verbose|v",
    "version",
    "sys";

$^W=1 if $opt_debug;

my $sys=($0=~/-sys$/)? 1:0;
$sys=1 if $opt_sys;

@allpackages=@ARGV;

sub message {
    my $message=shift;
    if ($message=~/^\[/) {
	print "$message\n";
    } else {
	printf "%-60s", $message;
    }
}


sub debug_msg {
    my $message=shift;
    if ($opt_debug) {
	print STDERR "DEBUG: $message.\n";
    }
}


sub expand_var {
    my $var=shift;

    if (-d "/usr/bin") {
	open KPSEWHICH, 'kpsewhich --expand-var=\$' . "$var |";
    } else {
	open KPSEWHICH, 'kpsewhich --expand-var=$'  . "$var |";
    }
    while (<KPSEWHICH>) {
	chop;
	return $_;
    }
    close KPSEWHICH;
}



# get TMP|TEMP|TMPDIR environment variable

if ($opt_debug) {
    for my $var ("TMP","TEMP","TMPDIR") {
	if (defined $ENV{$var}) {
	    debug_msg "Environment variable $var='$ENV{$var}'";
	} else {
	    debug_msg "Environment variable $var not set";
	}
    }
}

print "$TL_version\n" and exit 0 if $opt_version; 


if (defined $ENV{'TMP'}) {
    $SYSTMP="$ENV{'TMP'}";
} elsif (defined $ENV{'TEMP'}) {
    $SYSTMP="$ENV{'TEMP'}";
} elsif (defined $ENV{'TMPDIR'}) {
    $SYSTMP="$ENV{'TMPDIR'}";
} else {
    $SYSTMP="/tmp";
}

debug_msg "Internal variable SYSTMP set to '$SYSTMP'";

# Windows usually uses backslashes though forward slashes are probably
# allowed.  Perl always needs forward slashes.

# We convert backslashes to forward slashes if it looks like a Windows
# directory.
$SYSTMP=~s/\\/\//g if ($SYSTMP=~/^.:\\/); # c:\abc\def
$SYSTMP=~s/\\/\//g if ($SYSTMP=~/^\\\\/); # \\abc\def

debug_msg "Internal variable SYSTMP converted to '$SYSTMP'";

die "! ERROR: The temporary directory '$SYSTMP' doesn't exist.\n"
    unless (-d "$SYSTMP");

die "! ERROR: The temporary directory '$SYSTMP' is not writable.\n"
    unless (-w "$SYSTMP");


# Determine INSTALLROOT.

if ($opt_debug) {
    my @path=split ':', $ENV{PATH};
    for my $dir (@path) {
	debug_msg "Search for kpsewhich in '$dir'";
	opendir DIR, "$dir";
	my @kpsewichs=grep /^kpsewhich/, readdir DIR;
	closedir DIR;
	for (@kpsewichs) {
	    debug_msg "Found $dir/$_" if /^kpsewhich/;
	}
    }
}


if ($sys) {
    $INSTALLROOT=expand_var 'TEXMFLOCAL';
} else {
    $INSTALLROOT=expand_var 'TEXMFHOME';
}

($sys)? debug_msg "sys=true":debug_msg "sys=false";

debug_msg "INSTALLROOT='$INSTALLROOT'";

$INSTALLROOT=~s/\\/\//g if ($INSTALLROOT=~/^.:\\/); # c:\abc\def
$INSTALLROOT=~s/\\/\//g if ($INSTALLROOT=~/^\\\\/); # \\abc\def

debug_msg "Internal variable INSTALLROOT converted to '$INSTALLROOT'";

die "! ERROR: The install directory '$INSTALLROOT' doesn't exist.\n"
    unless (-d "$INSTALLROOT");

die "! ERROR: The install directory '$INSTALLROOT' is not writable.\n"
    unless (-w "$INSTALLROOT");


if ($opt_help) {
    print "\nThis is getnonfreefonts";
    print '-sys' if ($sys);
    print ", version $TL_version.\n\n";
    
    usage; 
    print <<"ENDUSAGE";
  Directories:
       temporary: '$SYSTMP/getfont-<PID>'
       install:   '$INSTALLROOT'

ENDUSAGE
exit 0;
}


my $tmpdir="$SYSTMP/getfont-$$";
debug_msg "Internal variable tmpdir set to '$tmpdir'";

mkdir "$tmpdir" or die "! ERROR: Can't mkdir '$tmpdir'.";
chdir "$tmpdir" or die "! ERROR: Can't cd '$tmpdir'.";

sub remove_tmpdir {
    chdir "$SYSTMP" or die "! ERROR: Can't cd '$SYSTMP'.\n";
    opendir TMPDIR, "$tmpdir" 
	or print "! ERROR: Can't read directory '$tmpdir'.\n";

    @alltmps=readdir TMPDIR;
    closedir TMPDIR;

    foreach $file (@alltmps) {
	next if $file=~/^\./;
	unlink "$tmpdir/$file";
    }
    rmdir "$tmpdir" or die "! ERROR: Can't remove directory '$tmpdir'.\n";
}

# Signal handlers for UNIX, maybe ignored by Windows.

$SIG{INT} =\&remove_tmpdir;
$SIG{QUIT}=\&remove_tmpdir;
$SIG{BUS} =\&remove_tmpdir;
$SIG{PIPE}=\&remove_tmpdir;
$SIG{TERM}=\&remove_tmpdir;
$SIG{ABRT}=\&remove_tmpdir;
$SIG{SEGV}=\&remove_tmpdir;

# Download the script from tug.org.

debug_msg "Running 'wget $getfont_url'";

system ('wget', "$getfont_url");

# Download the fonts.

my @getfont=('perl', "./getfont$TL_version", '--getnonfreefonts');
push @getfont, "--installroot=$INSTALLROOT";
push @getfont, '--lsfonts' if $opt_lsfonts;
push @getfont, '--force' if $opt_force;
push @getfont, '--debug' if $opt_debug;
push @getfont, '--verbose' if $opt_verbose;
push @getfont, '--sys' if $sys;
push @getfont, '--all' if $opt_all;
push @getfont, @allpackages;

debug_msg "Running '@getfont'";

system @getfont;

# Evaluate the exit status.  It will be 2 if something had been
# installed and in this case we need to run texhash/updmap.

my $exit_code=$?;
my $exit_status=int($exit_code/256);

if ($sys) {		     
    debug_msg "Info: Execute updmap-sys if exit status is 2";
} else {
    debug_msg "Info: Execute updmap if exit status is 2";
}

debug_msg "Exit status of getfont$TL_version is $exit_status";

if ($exit_status==2) {
    print "\n";
    system 'texhash', "$INSTALLROOT";
    $updmap_command=($sys)? 'updmap-sys':'updmap';
    @updmap=("$updmap_command");
    push @updmap, '--quiet' unless $opt_verbose;
    print "\n";
    message "Updating map files ($updmap_command)...";
    system @updmap;
    
    message $?? '[failed]':'[done]';
}

remove_tmpdir;

__END__