summaryrefslogtreecommitdiff
path: root/language/chinese/CJK/cjk-4.8.5/utils/subfonts/sfd2uni.pl
blob: 5aa1946d329271a2b518754c1db193a1a5111272 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
#! /usr/bin/perl -w
#
# This script creates virtual subfonts in Unicode encoding for a font
# encoding given by a subfont definition file (which must use Unicode
# code points).
#
# As prerequisites it needs the programs `tftopl' and `vptovf' which must be
# in the path.
#
# Call the script as
#
#   perl sfd2uni.pl sfd-file namestem uni-namestem codingscheme
#
# `sfd-file' is the subfont definition file, `namestem' is the name stem
# of the subfonts defined in `sfd-file', and `uni-namestem' holds the prefix
# for the Unicode subfonts. `codingscheme' (converted to uppercase) is used
# for the CODINGSCHEME parameter in the resulting TFM files.
#
# `sfd2uni.pl' reads all TFM files from the font family with name stem
# `namestem'.
#
# Example:
#
#   perl sfd2uni.pl UKS-HLaTeX.sfd wmj uwmj HLATEX
#
# A collection of useful subfont definition files for CJK fonts can be found
# in the ttf2pk package.

# Copyright (C) 1994-2021  Werner Lemberg <wl@gnu.org>
#
# 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 in doc/COPYING; if not, write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301 USA

use strict;

my $prog = $0;
$prog =~ s@.*/@@;

if ($#ARGV != 3) {
  die("usage: $prog sfd-file namestem uni-namestem codingscheme\n");
}

my $sfdfile = $ARGV[0];
my $namestem = $ARGV[1];
my $uninamestem = $ARGV[2];
my $codingscheme = $ARGV[3];


# Read subfont definition file.

my %sfd;
my @subfonts;

read_sfdfile($sfdfile, \%sfd, \@subfonts);


# Read TFM files.

my @unicmetrics;

foreach my $sub (@subfonts) {
  my $tfmname = "$namestem$sub.tfm";

  read_tfmfile($tfmname, \@unicmetrics, \%sfd, $sub);
}


# Read FONTDIMEN block.

my $fontdimen = read_fontdimen("$namestem$subfonts[0].tfm");


# Write VPL files.

my $index = 0;
foreach my $i (0 .. 255) {
  my @entries;

  foreach my $j (0 .. 255) {
    if (defined ($unicmetrics[$index])) {
      push(@entries, "$j $unicmetrics[$index]");
    }
    $index++;
  }

  if ($#entries >= 0) {
    write_vplfile($uninamestem . sprintf("%02x.vpl", $i), \@entries);
  }
}


# Generate VF and TFM files, then remove the VPL files.

my @vplfiles = glob("$uninamestem*.vpl");
foreach my $vplfile (@vplfiles) {
  print("Processing \`$vplfile'...\n");
  my $arg = "vptovf $vplfile";
  system($arg) == 0
  || die("$prog: calling \`$arg' failed: $?");;
  print("Removing \`$vplfile'...\n");
  unlink($vplfile);
}


# Read an SFD file.
#
#   $1: Name of the SFD file.
#   $2: Reference to the target hash file, mapping from the subfont index to
#       the character code. The format of the key value is the concatenation
#       of the subfont suffix, a space, and the index.
#   $3: Reference to a target array which holds the subfont suffixes.

sub read_sfdfile {
  my ($sfdfile, $sfdhash, $sfdarray) = @_;

  print("Reading subfont definition file \`$sfdfile'...\n");

  open(SFD, $sfdfile)
  || die("$prog: can't open \`$sfdfile': $!\n");

  my $line;
  my $continuation = 0;
  while (<SFD>) {
    chop;

    next if /^\s*$/;
    next if /^#/;

    if ($continuation) {
      $line .= $_;
    }
    else {
      $line = $_;
    }
    $continuation = 0;

    if ($line =~ s/\\$//) {
      $continuation = 1;
      next;
    }

    $_ = $line;
    my @field = split(" ");

    my $suffix = $field[0];
    push(@{$sfdarray}, $suffix);

    shift(@field);
    my $index = 0;

    while (@field) {
      if ($field[0] =~ /(.*):$/) {
        $index = $1;
      }
      elsif ($field[0] =~ /(.*)_(.*)/) {
        my $start = $1;
        my $end = $2;
        $start = oct($start) if ($start =~ /^0/);
        $end = oct($end) if ($end =~ /^0/);
        foreach my $i ($start .. $end) {
          $sfdhash->{"$suffix $index"} = $i;
          $index++;
        }
      }
      else {
        my $value = $field[0];
        $value = oct($value) if ($value =~ /^0/);
        $sfdhash->{"$suffix $index"} = $value;
        $index++;
      }
      shift(@field);
    }
  }
  close(SFD);
}


# Read TFM file.
#
#   $1: Name of the TFM file.
#   $2: Reference to the target array holding metric information in the form
#       `<subfont> <subfont_index> <width> <heigth> <depth>'.
#   $3: Reference to a hash created by `read_sfdfile'.
#   $4: Subfont suffix.

sub read_tfmfile {
  my ($tfmfile, $unicarray, $sfdhash, $sub) = @_;

  print("Processing metrics file \`$tfmfile'...\n");
  my $arg = "tftopl $tfmfile > $tfmfile.pl";
  system($arg) == 0
  || die("$prog: calling \`$arg' failed: $?\n");

  print("Reading property list file \`$tfmfile.pl'...\n");
  open(PL, "$tfmfile.pl")
  || die("$prog: can't open \`$tfmfile.pl': $!\n");

  while (<PL>) {
    my $index;
    if (/^\(CHARACTER O (\d+)/) {
      $index = oct($1);
    }
    elsif (/^\(CHARACTER C (.)/) {
      $index = ord($1);
    }
    else {
      next;
    }

    my $wd = "0";
    my $ht = "0";
    my $dp = "0";

    $_ = <PL>;
    if (/\(CHARWD R (.*)\)/) {
      $wd = "$1";
      $_ = <PL>;
    }
    if (/\(CHARHT R (.*)\)/) {
      $ht = "$1";
      $_ = <PL>;
    }
    if (/\(CHARDP R (.*)\)/) {
      $dp = "$1";
    }

    if (defined ($sfdhash->{"$sub $index"})) {
      $unicarray->[$sfdhash->{"$sub $index"}] = "$sub $index $wd $ht $dp";
    }
  }
  close(PL);
  print("Removing \`$tfmfile.pl'...\n");
  unlink("$tfmfile.pl");
}


# Read FONTDIMEN block of a TFM file.
#
#   $1: Name of the TFM file.
#
# Return the block as a string.

sub read_fontdimen {
  my ($tfmfile) = @_;

  print("Processing metrics file \`$tfmfile'...\n");
  my $arg = "tftopl $tfmfile > $tfmfile.pl";
  system($arg) == 0
  || die("$prog: calling \`$arg' failed: $?\n");

  print("Reading property list file \`$tfmfile.pl'...\n");
  open(PL, "$tfmfile.pl")
  || die("$prog: can't open \`$tfmfile.pl': $!\n");

  my $s = "";
  my $have_fontdimen = 0;

  while (<PL>) {
    if (/^\(FONTDIMEN/) {
      $have_fontdimen = 1;
    }

    if ($have_fontdimen) {
      $s .= $_;

      last if (/^   \)/);
    }
  }

  close(PL);
  print("Removing \`$tfmfile.pl'...\n");
  unlink("$tfmfile.pl");

  return $s;
}


# Write VPL file.
#
#   $1: Name of the VPL file.
#   $2: Reference to list which holds the font entries.  An entry has the
#       form `<idx> <subfont> <subfont_idx> <width> <height> <depth>'.

sub write_vplfile {
  my ($vplfile, $metricsarray) = @_;

  my %subfonts;
  my $subcount = 0;

  foreach my $entry (@{$metricsarray}) {
    my @field = split(" ", $entry);
    my $subfont = $field[1];
    if (!defined ($subfonts{$subfont})) {
      $subfonts{$subfont} = $subcount;
      $subcount++;
    }
  }

  print("Writing virtual property list file \`$vplfile'...\n");

  open(VPL, ">", $vplfile)
  || die("$prog: can't open \`$vplfile': $!\n");
  my $oldfh = select(VPL);

  print("(VTITLE Created by \`$prog " . join(" ", @ARGV) . "')\n");
  print("(FAMILY TEX-\U$uninamestem\E)\n");
  print("(CODINGSCHEME \U$codingscheme\E)\n");
  print $fontdimen;

  foreach my $subfont
             (sort { $subfonts{$a} <=> $subfonts{$b} } keys %subfonts) {
    print("(MAPFONT D $subfonts{$subfont}\n");
    print("   (FONTNAME $namestem$subfont)\n");
    print("   )\n");
  }

  foreach my $entry (@{$metricsarray}) {
    my ($index, $subnumber, $subindex, $wd, $ht, $dp) = split(" ", $entry);

    print("(CHARACTER D $index\n");
    print("   (CHARWD R $wd)\n");
    print("   (CHARHT R $ht)\n");
    print("   (CHARDP R $dp)\n");
    print("   (MAP\n");
    print("      (SELECTFONT D $subfonts{$subnumber})\n");
    print("      (SETCHAR D $subindex)\n");
    print("      )\n");
    print("   )\n");
  }

  close(VPL);
  select($oldfh);
}


# eof