NetBSD/gnu/usr.bin/groff/afmtodit/afmtodit.pl

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#! /usr/bin/perl -P-
# -*- Perl -*-
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#Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
# Written by James Clark (jjc@jclark.com)
#
#This file is part of groff.
#
#groff 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, or (at your option) any later
#version.
#
#groff 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 groff; see the file COPYING. If not, write to the Free Software
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#Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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$prog = $0;
$prog =~ s@.*/@@;
do 'getopts.pl';
do Getopts('e:sd:i:a:n');
if ($#ARGV != 2) {
die "Usage: $prog [-ns] [-d DESC] [-e encoding] [-i n] [-a angle] afmfile mapfile font\n";
}
$afm = $ARGV[0];
$map = $ARGV[1];
$font = $ARGV[2];
$desc = $opt_d || "DESC";
# read the afm file
open(AFM, $afm) || die "$prog: can't open \`$ARGV[0]': $!\n";
while (<AFM>) {
chop;
@field = split(' ');
if ($field[0] eq "FontName") {
$psname = $field[1];
}
elsif($field[0] eq "ItalicAngle") {
$italic_angle = -$field[1];
}
elsif ($field[0] eq "KPX") {
if ($#field == 3) {
push(kern1, $field[1]);
push(kern2, $field[2]);
push(kernx, $field[3]);
}
}
elsif ($field[0] eq "italicCorrection") {
$italic_correction{$field[1]} = $field[2];
}
elsif ($field[0] eq "leftItalicCorrection") {
$left_italic_correction{$field[1]} = $field[2];
}
elsif ($field[0] eq "subscriptCorrection") {
$subscript_correction{$field[1]} = $field[2];
}
elsif ($field[0] eq "StartCharMetrics") {
while (<AFM>) {
@field = split(' ');
last if ($field[0] eq "EndCharMetrics");
if ($field[0] eq "C") {
$c = -1;
$wx = 0;
$n = "";
$lly = 0;
$ury = 0;
$llx = 0;
$urx = 0;
$c = $field[1];
$i = 2;
while ($i <= $#field) {
if ($field[$i] eq "WX") {
$w = $field[$i + 1];
$i += 2;
}
elsif ($field[$i] eq "N") {
$n = $field[$i + 1];
$i += 2;
}
elsif ($field[$i] eq "B") {
$llx = $field[$i + 1];
$lly = $field[$i + 2];
$urx = $field[$i + 3];
$ury = $field[$i + 4];
$i += 5;
}
elsif ($field[$i] eq "L") {
push(ligatures, $field[$i + 2]);
$i += 3;
}
else {
while ($i <= $#field && $field[$i] ne ";") {
$i++;
}
$i++;
}
}
if (!$opt_e && $c != -1) {
$encoding[$c] = $n;
$in_encoding{$n} = 1;
}
$width{$n} = $w;
$height{$n} = $ury;
$depth{$n} = -$lly;
$left_side_bearing{$n} = -$llx;
$right_side_bearing{$n} = $urx - $w;
}
}
}
}
close(AFM);
# read the DESC file
$sizescale = 1;
open(DESC, $desc) || die "$prog: can't open \`$desc': $!\n";
while (<DESC>) {
next if /^#/;
chop;
@field = split(' ');
last if $field[0] eq "charset";
if ($field[0] eq "res") { $resolution = $field[1]; }
if ($field[0] eq "unitwidth") { $unitwidth = $field[1]; }
if ($field[0] eq "sizescale") { $sizescale = $field[1]; }
}
close(DESC);
if ($opt_e) {
# read the encoding file
open(ENCODING, $opt_e) || die "$prog: can't open \`$opt_e': $!\n";
while (<ENCODING>) {
chop;
@field = split(' ');
if ($#field == 1) {
if ($field[1] >= 0 && defined $width{$field[0]}) {
$encoding[$field[1]] = $field[0];
$in_encoding{$field[0]} = 1;
}
}
}
close(ENCODING);
}
# read the map file
open(MAP, $map) || die "$prog: can't open \`$map': $!\n";
while (<MAP>) {
next if /^#/;
chop;
@field = split(' ');
if ($#field == 1 && $in_encoding{$field[0]}) {
if (defined $mapped{$field[1]}) {
warn "Both $mapped{$field[1]} and $field[0] map to $field[1]";
}
elsif ($field[1] eq "space") {
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# the PostScript character "space" is automatically mapped
# to the groff character "space"; this is for grops
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warn "you are not allowed to map to the groff character `space'";
}
elsif ($field[0] eq "space") {
warn "you are not allowed to map the PostScript character `space'";
}
else {
$nmap{$field[0]} += 0;
$map{$field[0],$nmap{$field[0]}} = $field[1];
$nmap{$field[0]} += 1;
$mapped{$field[1]} = $field[0];
}
}
}
close(MAP);
$italic_angle = $opt_a if $opt_a;
# print it all out
open(FONT, ">$font") || die "$prog: can't open \`$font' for output: $!\n";
select(FONT);
print("name $font\n");
print("internalname $psname\n") if $psname;
print("special\n") if $opt_s;
printf("slant %g\n", $italic_angle) if $italic_angle != 0;
printf("spacewidth %d\n", do conv($width{"space"})) if defined $width{"space"};
if ($opt_e) {
$e = $opt_e;
$e =~ s@.*/@@;
print("encoding $e\n");
}
if (!$opt_n && $#ligatures >= 0) {
print("ligatures");
foreach $lig (@ligatures) {
print(" $lig");
}
print(" 0\n");
}
if ($#kern1 >= 0) {
print("kernpairs\n");
for ($i = 0; $i <= $#kern1; $i++) {
$c1 = $kern1[$i];
$c2 = $kern2[$i];
if ($in_encoding{$c1} == 1 && $nmap{$c1} != 0
&& $in_encoding{$c2} == 1 && $nmap{$c2} != 0) {
for ($j = 0; $j < $nmap{$c1}; $j++) {
for ($k = 0; $k < $nmap{$c2}; $k++) {
if ($kernx[$i] != 0) {
printf("%s %s %d\n",
$map{$c1,$j},
$map{$c2,$k},
do conv($kernx[$i]));
}
}
}
}
}
}
# characters not shorter than asc_boundary are considered to have ascenders
$asc_boundary = $height{"t"} - 1;
# likewise for descenders
$desc_boundary = $depth{"g"};
$desc_boundary = $depth{"j"} if $depth{"j"} < $desc_boundary;
$desc_boundary = $depth{"p"} if $depth{"p"} < $desc_boundary;
$desc_boundary = $depth{"q"} if $depth{"q"} < $desc_boundary;
$desc_boundary = $depth{"y"} if $depth{"y"} < $desc_boundary;
$desc_boundary -= 1;
if (defined $height{"x"}) {
$xheight = $height{"x"};
}
elsif (defined $height{"alpha"}) {
$xheight = $height{"alpha"};
}
else {
$xheight = 450;
}
$italic_angle = $italic_angle*3.14159265358979323846/180.0;
$slant = sin($italic_angle)/cos($italic_angle);
$slant = 0 if $slant < 0;
print("charset\n");
for ($i = 0; $i < 256; $i++) {
$ch = $encoding[$i];
if ($ch ne "" && $ch ne "space") {
$map{$ch,"0"} = "---" if $nmap{$ch} == 0;
$type = 0;
$h = $height{$ch};
$h = 0 if $h < 0;
$d = $depth{$ch};
$d = 0 if $d < 0;
$type = 1 if $d >= $desc_boundary;
$type += 2 if $h >= $asc_boundary;
printf("%s\t%d", $map{$ch,"0"}, do conv($width{$ch}));
$italic_correction = 0;
$left_math_fit = 0;
$subscript_correction = 0;
if (defined $opt_i) {
$italic_correction = $right_side_bearing{$ch} + $opt_i;
$italic_correction = 0 if $italic_correction < 0;
$subscript_correction = $slant * $xheight * .8;
$subscript_correction = $italic_correction if
$subscript_correction > $italic_correction;
$left_math_fit = $left_side_bearing{$ch} + $opt_i;
}
if (defined $italic_correction{$ch}) {
$italic_correction = $italic_correction{$ch};
}
if (defined $left_italic_correction{$ch}) {
$left_math_fit = $left_italic_correction{$ch};
}
if (defined $subscript_correction{$ch}) {
$subscript_correction = $subscript_correction{$ch};
}
if ($subscript_correction != 0) {
printf(",%d,%d", do conv($h), do conv($d));
printf(",%d,%d,%d", do conv($italic_correction),
do conv($left_math_fit),
do conv($subscript_correction));
}
elsif ($left_math_fit != 0) {
printf(",%d,%d", do conv($h), do conv($d));
printf(",%d,%d", do conv($italic_correction),
do conv($left_math_fit));
}
elsif ($italic_correction != 0) {
printf(",%d,%d", do conv($h), do conv($d));
printf(",%d", do conv($italic_correction));
}
elsif ($d != 0) {
printf(",%d,%d", do conv($h), do conv($d));
}
else {
# always put the height in to stop groff guessing
printf(",%d", do conv($h));
}
printf("\t%d", $type);
printf("\t0%03o\t%s\n", $i, $ch);
for ($j = 1; $j < $nmap{$ch}; $j++) {
printf("%s\t\"\n", $map{$ch,$j});
}
}
if ($ch eq "space" && defined $width{"space"}) {
printf("space\t%d\t0\t0%03o\n", do conv($width{"space"}), $i);
}
}
sub conv {
$_[0]*$unitwidth*$resolution/(72*1000*$sizescale) + ($_[0] < 0 ? -.5 : .5);
}