#!/usr/bin/perl
#
# Copyright (C) 2005 Luis Gonzalez Miranda
#
# hex2sfd created in 2005 by Luis Gonzalez Miranda, http://www.lgm.cl
#
# LICENSE:
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 2 of the License, or
#    (at your option) any later version.
#  
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
#    GNU General Public License for more details.
#  
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#
# %combining = ();
# open(A, "<combining.txt");
# while(<A>) {
# 	chomp;
# 	$combining{$A} = 1;
# }
# close(A);
#
# Modified by Paul Hardy, June 2008.
#
# The original code above didn't work properly.  The replacement code
# below wastes RAM, but it works as a quick fix.
#
@combining = ();
for ($i = 0; $i < 65536; $i++) {
   push(@combining, 0);
}
open(A, "<combining.txt");
while (<A>) {
   chomp;
   $combining[ hex($_) ] = 1;
}
close(A);
#
# Modified by Paul Hardy, July 2008.
#
# Make pixel 64 units for greatest scale; floating point numbers in
# TrueType have 6 fractional bits, so this works out well (2^6 = 64).
# Also, make size of font a power of 2 (16 * 64) for efficient scaling
# to any point size in TrueType.  Made bitmask a variable for easy
# experimenting.
#
$pixel   = 64;
$descent = 2 * $pixel;
$ascent  = 16 * $pixel - $descent;
$bitmask = 25;  # round in x (doesn't really work), corner point selected

print << "END";
SplineFontDB: 1.0
FontName: unifont
FullName: GNU Unifont
FamilyName: unifont
Weight: Medium
Comments: Created from the 2008-07-06 version of the GNU Unifont
Comments: with Luis Gonzalez Miranda's Perl and FontForge scripts.
Comments: See http://www.lgm.cl/trabajos/unifont/index.en.html for
Comments: information on Luis' scripts.
Comments: See http://czyborra.com/unifont
Comments: and http://unifoundry.com/unifont.html
Comments: for information on GNU Unifont.
Comments: See http://fontforge.sf.net for information on FontForge.
Version: 1.00
ItalicAngle: 0
UnderlinePosition: -100
UnderlineWidth: 40
Ascent: $ascent
Descent: $descent
NeedsXUIDChange: 1
XUID: [1021 140 1293607838 5610107]
FSType: 0
PfmFamily: 33
TTFWeight: 500
TTFWidth: 5
Panose: 2 0 6 4 0 0 0 0 0 0
LineGap: 72
VLineGap: 0
OS2WinAscent: 0
OS2WinAOffset: 1
OS2WinDescent: 0
OS2WinDOffset: 1
HheadAscent: 0
HheadAOffset: 1
HheadDescent: 0
HheadDOffset: 1
ScriptLang: 1
 1 latn 1 dflt 
Encoding: UnicodeBmp
UnicodeInterp: none
DisplaySize: -24
AntiAlias: 1
FitToEm: 1
WinInfo: 0 50 22
TeXData: 1 0 0 346030 173015 115343 0 1048576 115343 783286 444596 497025 792723 393216 433062 380633 303038 157286 324010 404750 52429 2506097 1059062 262144
BeginChars: 65536 3
END
$count=0;
while(<STDIN>) {
	chomp;
	($c,$d)=split(/:/);
	$width=length($d)/4;
	$ptwidth=$pixel * $width;
#	if($combining{$c}) {             # this was the original "if"
	if ($combining[ hex($c) ]) {
		$ptwidth = 0;
	}
	$cn=hex($c);
        # Changed "Flags: H" to "Flags: HW" to fix spaces - Paul Hardy, 2008
	print << "END";
StartChar: $c
Encoding: $cn $cn $count
Width: $ptwidth
Flags: HW
TeX: 0 0 0 0
Fore
END

	for($i=0;$i<16;$i++) {
		$l=substr($d, $i*$width/4, $width/4);
		$num=hex($l);
		$prev=0;
		for($j=0; $j<$width; $j++) {
			$x=$width - 1 - $j;
			$y=15 - $i;
			if($num%2) {
				# point at i, width-1-j
				if(!$prev) {
					$x1=$x * $pixel + $pixel;
					$y1=$y * $pixel - $descent;
					$x2=$x1 + $pixel;
					$y2=$y1 + $pixel;
				}
				$prev=1;
			} else {
				if($prev) {
					$x2=$x * $pixel + $pixel;
					print << "END";
$x1 $y1 m $bitmask
 $x1 $y2 l $bitmask
 $x2 $y2 l $bitmask
 $x2 $y1 l $bitmask
 $x1 $y1 l $bitmask
END
				}
				$prev=0;
			}
			$num=int($num/2);
		}
		if($prev) {
			$x2=0;
			print << "END";
$x1 $y1 m $bitmask
 $x1 $y2 l $bitmask
 $x2 $y2 l $bitmask
 $x2 $y1 l $bitmask
 $x1 $y1 l $bitmask
END
		}
	}
	print << "END";
EndSplineSet
EndChar
END
	$count++;
}
print << "END";
EndChars
EndSplineFont
END