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#!/usr/bin/perl
#
# any2ucs.pl
#
# This Perl script allows you to generate an ISO10646-1 encoded
# BDF font from another BDF font in any possible encoding. It was
# based on the ucs2any.pl script by Markus Kuhn.
use strict 'subs';
sub is_control {
my ($source) = @_;
return (($source >= 0x00 && $source <= 0x1f) ||
($source >= 0x7f && $source <= 0x9f));
}
# calculate the bounding box that covers both provided bounding boxes
sub combine_bbx {
my ($awidth, $aheight, $axoff, $ayoff,
$cwidth, $cheight, $cxoff, $cyoff) = @_;
if ($axoff < $cxoff) {
$cwidth += $cxoff - $axoff;
$cxoff = $axoff;
}
if ($ayoff < $cyoff) {
$cheight += $cyoff - $ayoff;
$cyoff = $ayoff;
}
if ($awidth + $axoff > $cwidth + $cxoff) {
$cwidth = $awidth + $axoff - $cxoff;
}
if ($aheight + $ayoff > $cheight + $cyoff) {
$cheight = $aheight + $ayoff - $cyoff;
}
return ($cwidth, $cheight, $cxoff, $cyoff);
}
print <<End if $#ARGV < 0;
Usage: any2ucs.pl <source-name> <mapping-file>
where
<source-name> is the name of the source BDF file
<mapping-file> is the name of a character set table like those on
<ftp://ftp.unicode.org/Public/MAPPINGS/>
Example:
any2ucs.pl 6x13.bdf 8859-7.TXT
will generate the file 6x13-iso10646-1.bdf
from the iso-8859-7 encoded file 6x13.bdf
End
exit if $#ARGV < 0;
# open and read source file
$fsource = $ARGV[0];
open(FSOURCE, "<$fsource") || die ("Can't read file '$fsource': $!\n");
# read header
$properties = 0;
$default_char = 0;
while (<FSOURCE>) {
last if /^CHARS\s/;
if (/^STARTFONT/) {
$startfont = $_;
} elsif (/^_XMBDFED_INFO\s/ || /^_XFREE86_GLYPH_RANGES\s/) {
$properties--;
} elsif (/DEFAULT_CHAR\s+([0-9]+)\s*$/) {
$default_char = $1;
$header .= "DEFAULT_CHAR 0\n";
} else {
if (/^STARTPROPERTIES\s+(\d+)/) {
$properties = $1;
} elsif (/^FONT\s+(.*-([^-]*-\S*))\s*$/) {
if ($2 eq "ISO10646-1") {
die("Font seems to already be ISO10646-1!\n");
};
} elsif (/^CHARSET_REGISTRY\s+"(.*)"\s*$/) {
if ($1 eq "ISO10646") {
die("Font seems to already be ISO10646-1!\n");
};
$registry = $1;
} elsif (/^CHARSET_ENCODING\s+"(.*)"\s*$/) {
$encoding = $1;
} elsif (/^SLANT\s+"(.*)"\s*$/) {
$slant = $1;
$slant =~ tr/a-z/A-Z/;
} elsif (/^SPACING\s+"(.*)"\s*$/) {
$spacing = $1;
$spacing =~ tr/a-z/A-Z/;
}
s/^COMMENT\s+\"(.*)\"$/COMMENT $1/;
s/^COMMENT\s+\$[I]d: (.*)\$\s*$/COMMENT Derived from $1\n/;
$header .= $_;
}
}
die ("No STARTFONT line found in '$fsource'!\n") unless $startfont;
die ("No CHARSET_REGISTRY line found in '$fsource'!\n") unless defined($registry);
die ("No CHARSET_ENCODING line found in '$fsource'!\n") unless defined($encoding);
$header =~ s/\nSTARTPROPERTIES\s+(\d+)\n/\nSTARTPROPERTIES $properties\n/;
# read characters
while (<FSOURCE>) {
if (/^STARTCHAR/) {
$sc = $_;
$code = -1;
} elsif (/^ENCODING\s+(-?\d+)/) {
$code = $1;
$startchar{$code} = $sc;
$char{$code} = "";
} elsif (/^ENDFONT$/) {
$code = -1;
$sc = "STARTCHAR ???\n";
} else {
$char{$code} .= $_;
if (/^ENDCHAR$/) {
$code = -1;
$sc = "STARTCHAR ???\n";
}
}
}
close FSOURCE;
delete $char{-1};
shift @ARGV;
$fmap = $ARGV[0];
# open and read source file
open(FMAP, "<$fmap")
|| die ("Can't read mapping file '$fmap': $!\n");
%map = ();
while (<FMAP>) {
next if /^\s*(\#.*)?$/;
if (/^\s*(0[xX])?([0-9A-Fa-f]{4}|[0-9A-Fa-f]{2})\s+(0[xX]|U\+|U-)?([0-9A-Fa-f]{4})/) {
$target = hex($4);
$source = hex($2);
if (!is_control($source)) {
if ($startchar{$source}) {
$map{$target} = $source;
} else {
printf STDERR "No glyph for character 0x%04x " .
"(U+%04X) available.\n", $source, $target;
}
}
} else {
printf STDERR "Unrecognized line in '$fmap':\n$_";
}
}
close FMAP;
# add default character
if (!(defined($map{0}) && $startchar{$map{0}})) {
if (defined($default_char) && $startchar{$default_char}) {
$map{0} = $default_char;
$startchar{$default_char} = "STARTCHAR defaultchar\n";
} else {
printf STDERR "No default character defined.\n";
}
}
# list of characters that will be written out
@chars = sort {$a <=> $b} keys(%map);
if ($#chars < 0) {
print STDERR "No characters found for $registry-$encoding.\n";
};
# find overall font bounding box
undef @bbx;
for $target (@chars) {
$source = $map{$target};
if ($char{$source} =~ /^BBX\s+(\d+)\s+(\d+)\s+(-?\d+)\s+(-?\d+)\s*$/m) {
if (@bbx) {
@bbx = combine_bbx(@bbx, $1, $2, $3, $4);
} else {
@bbx = ($1, $2, $3, $4);
}
} else {
printf STDERR "Warning: No BBX found for 0x%04x!\n", $source;
}
}
# generate output file name
if ($fsource =~ /^(.*).bdf$/i) {
$fout = $1 . "-iso10646-1.bdf";
} else {
$fout = $fsource . "-iso10646-1";
}
$fout =~ s/^(.*\/)?([^\/]+)$/$2/; # remove path prefix
# write new BDF file
printf STDERR "Writing %d characters into file '$fout'.\n", $#chars + 1;
open(FOUT, ">$fout")
|| die ("Can't write file '$fout': $!\n");
print FOUT $startfont;
print FOUT "COMMENT AUTOMATICALLY GENERATED FILE. DO NOT EDIT!\n";
print FOUT "COMMENT Generated with 'any2ucs.pl $fsource $fmap'\n";
print FOUT "COMMENT from a(n) $registry-$encoding encoded source BDF font.\n";
print FOUT "COMMENT any2ucs.pl is based on ucs2any.pl by Markus Kuhn <mkuhn\@acm.org>, 2000.\n";
$newheader = $header;
$newheader =~
s/^FONTBOUNDINGBOX\s+.*$/FONTBOUNDINGBOX @bbx/m
|| print STDERR "Warning: FONTBOUNDINGBOX not fixed!\n";
$newheader =~
s/^FONT\s+(.*)-\w+-\w+\s*$/FONT $1-ISO10646-1/m
|| print STDERR "Warning: FONT property not fixed!\n";
$newheader =~
s/^CHARSET_REGISTRY\s+.*$/CHARSET_REGISTRY "ISO10646"/m
|| print STDERR "Warning: CHARSET_REGISTRY not fixed!\n";
$newheader =~
s/^CHARSET_ENCODING\s+.*$/CHARSET_ENCODING "1"/m
|| print STDERR "Warning: CHARSET_ENCODING not fixed!\n";
print FOUT $newheader;
printf FOUT "CHARS %d\n", $#chars + 1;
# Write characters
for $target (@chars) {
$source = $map{$target};
print FOUT $startchar{$source};
print FOUT "ENCODING $target\n";
print FOUT $char{$source};
}
print FOUT "ENDFONT\n";
close(FOUT);
|
