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|
#! /usr/local/bin/perl
#
# Usage: enc-afm afm-file enc-file > encoded-afm-file
#
# Where: afm-file is the original AFM file with an arbitrary
# encoding enc-file is the encoding file (in PS
# format, a la dvips .enc files) encoded-afm-file is
# the new AFM file with 'enc-file' encoding.
#
# what about .notdef?
$afmfile = @ARGV[0];
$encfile = @ARGV[1];
print STDERR "Reading encoding file: $encfile\n";
&read_encfile($encfile);
print STDERR "Reading AFM file: $afmfile\n";
&read_afmfile($afmfile);
# Assign the correct encoding position to each char
$missing = 0;
for ($count = 0; $count < $vectorlen; $count++) {
$missing_glyphs{@encoding[$count]} = 1, $missing = 1
if !defined($vectorplace{@encoding[$count]})
&& @encoding[$count] ne ".notdef";
$vectorplace{@encoding[$count]} = $count;
}
&print_long_list("Note: the following glyphs are missing "
. "from the AFM file: ",
sort (keys %missing_glyphs))
if $missing;
# Construct the CharMetrics lines
@output_encoding = ();
foreach $name (keys %metrics) {
push (@output_encoding,
sprintf("C %3d ; %s",
$vectorplace{$name}, $metrics{$name}));
}
# Sort the CharMetrics lines
@sorted_encoding = sort (@output_encoding);
# Move the unused characters to the end of the list
@output_encoding = grep(/^C\s+\d+/, @sorted_encoding);
@minusone_encoding = grep(/C\s+-1/, @sorted_encoding);
push(@output_encoding, @minusone_encoding);
# Print the new AFM file
print $line, "\n" while ($line = shift @preamble);
print "Comment Encoded with enc-afm from $encfile.\n";
print "EncodingScheme $encname\n";
printf "StartCharMetrics %d\n", $#output_encoding+1;
print $line, "\n" while ($line = shift @output_encoding);
print "EndCharMetrics\n";
print $line, "\n" while ($line = shift @postamble);
exit 0;
sub read_afmfile {
local ($afmfile) = @_;
local ($inpreamble, $inmetrics, $inpostamble) = (1,0);
local ($width, $name, $bbox, $prname);
@preamble = ();
%metrics = ();
%vectorplace = ();
@postamble = ();
open (AFM, $afmfile)
|| die "Can't open afm file: $afmfile\n";
while (<AFM>) {
chop;
push(@postamble, $_) if $inpostamble;
push(@preamble, $_)
if $inpreamble && ! /^EncodingScheme\s/i;
if (/^EndCharMetrics/) {
$inmetrics = 0;
$inpostamble = 1;
}
if ($inmetrics) {
$width = $1 if /[;\s]+WX\s+([0-9]+)[;\s]+/;
$name = $1 if /[;\s]+N\s+(\w+)[;\s]+/;
$bbox = $1 if /[;\s]+B\s+([^;]+)[;\s]+/;
die "Invalid line in AFM file: $_\n"
if ($name eq "");
$metrics{$name} = sprintf("WX %4d ; N %s ; B %s ;",
$width, $name, $bbox);
$vectorplace{$name} = -1;
}
if (/^StartCharMetrics/) {
$inpreamble = 0;
$inmetrics = 1;
}
}
}
sub read_encfile {
local ($encfile) = @_;
local ($place, $line);
open (ENC, $encfile)
|| die "Can't open encoding file: $encfile\n";
$encname = "";
@encoding = ();
$#encoding = 256; # set the array length
$vectorlen = 0;
$done = 0;
while (<ENC>) {
chop;
next if /^\s*%/;
$line = $_;
if ($encname eq "") {
die "Invalid line in encoding file: $_\n"
if ! /\s*\/(.*)\s*\[(.*)$/;
$encname = $1;
$line = $2;
}
$place = index($line, "%");
$line = substr($line,$[,$place-1) if $place >= $[;
$place = index($line, "]");
if ($place >= $[) {
$line = substr($line,$[,$place-1);
$done = 1;
}
while ($line =~ /^\s*\/(\S*)\s*(.*)$/) {
@encoding[$vectorlen++] = $1;
$line = $2;
}
last if $done;
}
}
############################################################
# This routine prints a message followed by a potentially
# long list of items, seperated by spaces. It will never
# allow "word wrap" to occur in the middle of a word. There
# has to be a better way, using Perl's report generation to
# do this, but I haven't looked yet.
#
sub print_long_list {
local ($message,@thelist) = @_;
local ($line) = $message;
local ($item, $displaystring) = ("", "");
foreach $item (@thelist) {
if (length($line . $item) < 73) {
$line .= $item . ", ";
} else {
$displaystring .= $line . "\n";
$line = $item . ", ";
}
}
$line =~ s/(.*),\s*$/$1/; # remove the last ", "...
$displaystring .= $line . "\n";
print STDERR $displaystring;
}
|
