зеркало из https://github.com/mozilla/pjs.git
647 строки
20 KiB
Perl
647 строки
20 KiB
Perl
#!/bin/perl
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#
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# The contents of this file are subject to the Mozilla Public
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# License Version 1.1 (the "License"); you may not use this file
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# except in compliance with the License. You may obtain a copy of
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# the License at http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS
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# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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# implied. See the License for the specific language governing
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# rights and limitations under the License.
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#
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# The Original Code is Mozilla MathML Project.
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#
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# The Initial Developer of the Original Code is The University Of
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# Queensland. Portions created by The University Of Queensland are
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# Copyright (C) 2001 The University Of Queensland. All
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# Rights Reserved.
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#
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# Contributor(s):
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# Roger B. Sidje <rbs@maths.uq.edu.au> - Original Author
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#
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# RBS - Last Modified: March 14, 2001.
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#
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# Usage: perl encode.pl font-encoding-table.html [-t truetype | type1]
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#
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require 'getopts.pl';
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our($opt_h, $opt_f, $opt_t);
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#
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require 'mathfont.pl';
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my($DEBUG) = 1;
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# where is the MathML DTD file?
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my($DTDfile) = "C:\\Mozilla\\src\\mozilla\\layout\\mathml\\content\\src\\mathml.dtd";
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# where to load the PUA file?
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my($PUAfile) = "C:\\Mozilla\\src\\mozilla\\layout\\mathml\\base\\src\\mathfontPUA.properties";
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# where to save the PUA file if new assignments to the PUA are made?
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my($newPUAfile) = $PUAfile;
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# get the basename of the script
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my($progname) = $0 =~ /([^\/\\]+)$/;
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sub usage
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{
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my($comment) = @_;
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my($usage) = <<__USAGE__;
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Usage: perl $progname [-h] -f fontfile.html [-t truetype | type1]
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Purpose
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This script takes in input a Mozilla's MathFont Encoding Table and
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outputs the data needed to support the font, i.e., the data for the
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ucvmath module and the data for the MathFont Property File.
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Options
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-h (help, this message)
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-f fontfile.html
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The file that contains the font's encoding table. To see examples,
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launch 'view-source' on the .html files of the default
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fonts at: http://www.mozilla.org/projects/mathml/fonts/encoding/
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These .html files are *exactly* the files passed to this script
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with this -f option. For example, to get the data currently used
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by Mozilla for the Math1 font, this script was executed as:
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encode.pl -f math1.html
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The script parses the .html file to extract the mapping enclosed in
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<!--cmap-->
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...
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<!--/cmap-->
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Not only does this ease maintenance, but it also means that the website
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reflects the latest updates. Note however that the MathFont Property
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Files are also hand-tuned to refine the results and to add further
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customization. Such refinements should not be done on the files generated
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by this script directly (see below). Otherwise you will overwrite and
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thus lose your changes if you run the script again.
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-t encodingtype
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This option should not be used if the TrueType and Type1 versions
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have the same encoding. If there are different encodings, use
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-t truetype : to process the TrueType encoding table inside the file
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-t type1 : to process the Type1 encoding table inside the file
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OUTPUT:
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Given the fontfile.html on input, three files are created on output:
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1. a file called fontname-ucvmath.txt : this is the data to pass to
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"umaptable" for the ucvmath module.
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For example, running "encode.pl -f math1.html" produces math1-ucvmath.txt.
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Then, running "umaptable -uf < math1-ucvmath.txt > mathematica1.uf" will
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produce the resulting file that is currently in mozilla/intl/uconv/ucvmath.
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"umaptable" is a standalone C program that can be built from
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mozilla/intl/uconv/tools and the executable copied where you want.
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2. fontname-properties.txt : this is the data for the MathFont Property File.
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Continuing with the example of Math1, a file called math1-properties.txt
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will be created. Then after hand-tuning (if necessary), the file is copied
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to its final destination:
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mozilla/layout/mathml/base/src/mathfontMath1.properties
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3. fontname-encoding.html : the is a prettified output that shows the
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resulting mappings. For the example of Math1, this is the file that is at:
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http://www.mozilla.org/projects/mathml/fonts/encoding/math1-encoding.html
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4. Furthermore, since new assignments can be made to the PUA during
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processing, the mathfontPUA.properties file is updated with any new
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assignments that may have been made.
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__USAGE__
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$comment = "\nBad usage: $comment\n" if $comment;
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die "$comment\n$usage";
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}
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#
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&usage("Missing arguments") if !&Getopts('hf:t:');
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&usage("") if $opt_h; # help option
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# The file that contains MathFont Encoding Table(s)
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my($encoding_file) = $opt_f;
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&usage("Missing file") unless $opt_f;
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$encoding_file = "encoding\\" . $encoding_file;
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# The encoding type should be:
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# . "" (empty), if there is only one encoding for both TrueType and Type1
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# . "truetype", to process the TrueType encoding table inside the file
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# . "type1", to process the Type1 encoding table inside the file
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my($encoding_type) = $opt_t;
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&usage("Unexpected type") unless $encoding_type eq "" ||
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$encoding_type eq "type1" ||
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$encoding_type eq "truetype";
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# Processing starts here
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#######################################################################
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# global variables -- in capitals
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# $UNIDATA{$unicode} holds a whitespace-separated list of entities and
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# annotated unicode points that all resolve to that $unicode point.
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# %UNIDATA is declared in mathfont.pl
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# $GLYPHDATA{$glyph} holds a whitespace-separated list of entities and
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# annotated unicode points that all resolve to that $glyph index.
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my(%GLYPHDATA);
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# $MAP{$glyph} holds the ultimate resolved unicode point of the $glyph
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# (could be a PUA value).
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my(%MAP);
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# load current assignments to the PUA
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&load_PUA($PUAfile);
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# parse the supplied encoding data
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my($fontfamily) = &parse_mapping_table($encoding_file, $encoding_type);
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# resolve all mappings
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&generate_mapping_data($fontfamily);
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# save the PUA to preserve any new assignments
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&save_PUA($PUAfile, $newPUAfile);
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# dump results
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&output_stretchy_data($fontfamily, $encoding_type);
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&output_mapping_data($fontfamily, $encoding_type);
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&output_encoding_map($fontfamily, $encoding_type);
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exit(0);
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#########################################################################
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# parse_mapping_table:
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#
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# Parse a file containing the mapping between glyph indices and
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# unicode points. The file is formatted as:
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# <!--cmap:FontFamilyName(:truetype|:type1)-->
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# 0xNN 0xNNNN #optional trailing comment
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# 0xNN 0xNNNN:0
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# 0xNN 0xNNNN:1
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# -0xNN
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# 0xNN 0xNNNN:T, 0xABCD
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# 0xNN 0xNNNN:G, 0xABCD
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# 0xNN >PUA #required comment with &entity;
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# ...etc
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# <!--/cmap:FontFamilyName(:truetype|:type1)-->
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#
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# Note that there is an enclosing: <cmap> ... </cmap> with the *required*
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# FontFamilyName and the optional type (exactly 'truetype' or 'type1').
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#
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# The first field may contain a dash '-', in which case the line is skipped.
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# The second field is the glyph index.
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# The third field is a comma-delimited list of its associated unicode points
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# with annotations w.r.t their applicability ('T', 'L', 'M', 'B', 'R', '0'-'9').
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#
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# Partial glyphs can apply to different chars. The annotation for '0' is
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# optional, i.e., it is assumed if no other annotation has been specified.
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# The list can run over many lines provided the preceding line ends
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# with a comma.
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#
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# If the keyword '>PUA' is present, or the unicode point is in plane 1,
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# a PUA code is assigned, and is associated with the required '&entity;'
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# that must be provided in the comment field.
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#########################################################################
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sub parse_mapping_table
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{
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my($file, $type) = @_;
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local(*FILE);
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open(FILE, $file) || die "Cannot find $file\n";
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my($data) = join("", <FILE>);
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close(FILE);
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my($fontfamily);
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$type = ':' . $type if $type;
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if ($data =~ m|<!--cmap:([^>]+?)$type-->(.+?)<!--/cmap:([^>]+?)$type-->|s) {
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die "ERROR *** Bad mapping: mistmatching tags $type start:$1 end:$3" unless $1 eq $3;
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($fontfamily, $data) = ($1, $2);
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die "ERROR *** No specified font type $1" if $fontfamily =~ /:/;
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}
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else {
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die "ERROR *** Bad mapping: data must be enclosed in the <cmap> tag";
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}
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my($isContinuation) = 0;
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my($line, $glyph, $comment, $oldline, $oldcomment);
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my (@lines) = split("\n", $data);
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foreach $line (@lines) {
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# skip bogus lines
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next if $line =~ m/^-/;
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# remove leading and trailing whitespace
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$line =~ s/^\s+//; $line =~ s/\s+$//;
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# cache comments in case the keyword '>PUA' is present
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$comment = ($line =~ m/#(.*)/) ? $1 : "";
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$line =~ s/\s*#.*//;
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# see if this is the continuation of a longer line
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if ($isContinuation) {
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$line = $oldline . ' ' . $line;
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$comment = $oldcomment . ' ' . $comment;
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$isContinuation = 0;
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}
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# if the line ends with a comma, the next line is a continuation
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if ($line =~ m/,$/) {
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$oldline = $line;
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$oldcomment = $comment;
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$isContinuation = 1;
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next;
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}
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# get the mapping on the line
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next unless ($line =~ m/^(0x..)\s+(.+)$/);
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($glyph, $data) = ($1, $2);
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# see if this a '>PUA' or plane 1 character
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if (($data eq '>PUA') || ($data =~ m/^0x1..../)) {
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my($entitylist) = '';
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while ($comment =~ /&(.+?);/g) {
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$entitylist .= ' ' . $1;
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}
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$entitylist =~ s/^\s//;
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die "ERROR *** No entities found: $line" unless $entitylist;
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$GLYPHDATA{$glyph} = $entitylist;
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# continue to next line
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next;
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}
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# skip bogus lines where uncertainties still remain
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$data .= ' ';
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next unless $data =~ /^0x....\s*[, ]/ || $data =~ /^0x....:[TLMBRG0-9]\s*[, ]/;
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chop($data);
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# convert from comma-delimited to whitespace-delimited
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$data =~ s/\s*,\s*/ /g;
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# add explicit 0 at size0
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$data =~ s/(0x....) /$1:0 /;
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$data =~ s/(0x....)$/$1:0/;
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# $GLYPHDATA{$glyph} is a list of referrers to that glyph
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$GLYPHDATA{$glyph} = $data;
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}
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# check for correctness
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&verify_mapping_table();
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return $fontfamily;
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}
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#########################################################################
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# verify_mapping_table:
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#
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# helper to check that some common mistakes were not made when
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# setting up the encoding table.
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#########################################################################
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sub verify_mapping_table
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{
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my($glyph, $entry, $tmp);
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foreach $glyph (keys %GLYPHDATA) {
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my(@data) = split(' ', $GLYPHDATA{$glyph});
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foreach $entry (@data) {
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# verify that $entry wasn't listed twice on distinct lines
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foreach $tmp (keys %GLYPHDATA) {
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next if $tmp eq $glyph;
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next unless $GLYPHDATA{$tmp} =~ /\b$entry\b/;
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die "ERROR *** Duplicate: $glyph $GLYPHDATA{$glyph} vs. $tmp $GLYPHDATA{$tmp}";
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}
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# verify that $entry wasn't listed twice on the same line
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$tmp = $GLYPHDATA{$glyph};
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$tmp =~ s/\b$entry\b//;
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next unless $tmp =~ /\b$entry\b/;
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die "ERROR *** Duplicate: $glyph $GLYPHDATA{$glyph}";
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}
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}
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}
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#########################################################################
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# generate_mapping_data:
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#
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# This routine resolves the unicode points (PUA and non-PUA) of all
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# elements. Upon completion, the assignments for all entities, annotated
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# unicode points, and glyph indices are known.
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#########################################################################
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sub generate_mapping_data
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{
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my($font) = @_;
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my($glyph);
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foreach $glyph (sort keys %GLYPHDATA) {
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# $GLYPHDATA{$glyph} is a list of referrers to that glyph
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# see if one of the referrers is already resolved
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my($entry);
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my($unicode) = '';
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my(@data) = split(' ', $GLYPHDATA{$glyph});
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foreach $entry (@data) {
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# see if this entry is the unicode associated to size0
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if ($entry =~ /(0x....):0/) {
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$unicode = $1;
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last;
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}
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# see if this entry is already associated to a unicode point
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$unicode = get_unicode($entry);
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last if $unicode;
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}
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# if we found one entry that was already resolved, make
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# everybody on the list resolve to that unicode point
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if ($unicode) {
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foreach $entry (@data) {
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next if $entry =~ /0x....:0/;
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if (defined $UNIDATA{$unicode}) {
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$UNIDATA{$unicode} .= " $entry"
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unless $UNIDATA{$unicode} =~ /\b$entry\b/;
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}
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else {
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$UNIDATA{$unicode} = $entry;
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}
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}
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}
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else {
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# make a new assignment to the PUA for this encoding point
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$unicode = &assign_PUA($GLYPHDATA{$glyph});
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}
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# now, we know the unicode point of the glyph
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die "ERROR *** Duplicate $glyph" if defined $MAP{$glyph};
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$MAP{$glyph} = $unicode;
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}
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# check that all went well
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verify_mapping_data();
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}
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#########################################################################
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# verify_mapping_data:
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#
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# helper to check the validity of the resolved mapping.
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#########################################################################
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sub verify_mapping_data
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{
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my($unicode, $entry, $tmp);
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foreach $unicode (keys %UNIDATA) {
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my(@data) = split(' ', $UNIDATA{$unicode});
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foreach $entry (@data) {
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# verify that $entry wasn't assigned twice on distinct slots
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foreach $tmp (keys %UNIDATA) {
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next if $tmp eq $unicode;
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# we don't care about different mappings outside the PUA because
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# these are not kept in the mathfontPUA.properties file
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next unless &is_pua($tmp) && &is_pua($unicode);
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next unless $UNIDATA{$tmp} =~ /\b$entry\b/;
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# if we reach here, different mappings in the PUA were found
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# for the same annotated code point, something is wrong
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die "ERROR *** Duplicate: $unicode $UNIDATA{$unicode} vs. $tmp $UNIDATA{$tmp}";
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}
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# verify that $entry wasn't listed twice on the same slot
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$tmp = $UNIDATA{$unicode};
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$tmp =~ s/\b$entry\b//;
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next unless $tmp =~ /\b$entry\b/;
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die "ERROR *** Duplicate: $unicode $UNIDATA{$unicode}";
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}
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}
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}
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sub is_pua
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{
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my($value) = @_;
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if ($value =~ s/^0x//) {
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my($numeric) = hex($value);
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return 1 if $numeric >= 0xE000 && $numeric <= 0xF8FF;
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}
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return 0;
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}
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#########################################################################
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# output_mapping_data:
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#
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# output the mapping data that goes in the ucvmath module
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#########################################################################
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sub output_mapping_data
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{
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my($font, $type) = @_;
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$type = "-$type" if $type;
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my($file) = "$font-ucvmath$type.txt";
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$file =~ s/ //g;
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$file = lc($file);
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print "Saving mapping data of $font in: $file\n";
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local(*FILE);
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open(FILE, ">$file") || die "Cannot open $file\n";
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my($glyph);
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foreach $glyph (sort keys %MAP) {
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print FILE "$glyph $MAP{$glyph}\n";
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}
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close(FILE);
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}
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#########################################################################
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# output_stretchy_data:
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#
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# output the list of stretchy data in the compact format expected by
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# the MathFont Property File.
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#########################################################################
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sub output_stretchy_data
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{
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my($font, $type) = @_;
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$type = "-$type" if $type;
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my($file) = "$font-properties$type.txt";
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$file =~ s/ //g;
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$file = lc($file);
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print "Saving properties of $font in: $file\n";
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&load_DTD($DTDfile);
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my($pattern);
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my(@patterns) = qw {
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(\S+):[TL]
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(\S+):M
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(\S+):[BR]
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(\S+):G
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};
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my($unicode, $glyph, $label);
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# construct the _transpose_ of the GLYPHDATA table so that upon
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# completion, $table{unicode} = list of its associated glyph
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# indices with the annotations flipped on the other side
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my(%table);
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foreach $glyph (%GLYPHDATA) {
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my(@data) = split(' ', $GLYPHDATA{$glyph});
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foreach $unicode (@data) {
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# the '0x' prefix is not kept here
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next unless $unicode =~ m|0x(....):(.)|;
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($unicode, $label) = ($1, $2);
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if (defined $table{$unicode}) {
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$table{$unicode} .= " $glyph:$label";
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}
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else {
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$table{$unicode} = "$glyph:$label";
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}
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}
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}
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# now, replace the glyph indices with their resolved unicode points
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my($parts, $sizes, $comment);
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local(*FILE);
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open(FILE, ">$file") || die "Cannot open $file\n";
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foreach $unicode (sort keys %table) {
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my($isMutable) = 0;
|
|
|
|
# partial glyphs
|
|
$parts = '';
|
|
foreach $pattern (@patterns) {
|
|
if ($table{$unicode} =~ m/$pattern/) {
|
|
$glyph = $1;
|
|
$parts .= &indirect_pua($MAP{$glyph});
|
|
$isMutable = 1;
|
|
}
|
|
else {
|
|
$parts .= '\uFFFD';
|
|
}
|
|
}
|
|
|
|
# glyphs of larger sizes
|
|
my($sizes) = "\\u$unicode"; # size0 is the char itself
|
|
$label = '1';
|
|
while ($table{$unicode} =~ m/(\S+):$label/) {
|
|
$glyph = $1;
|
|
$sizes .= &indirect_pua($MAP{$glyph});
|
|
++$label;
|
|
$isMutable = 1;
|
|
}
|
|
|
|
# ignore this character if it is not mutable
|
|
next unless $isMutable;
|
|
|
|
# entry for the list of glyphs
|
|
$comment = $ENTITY{"0x$unicode"};
|
|
if ($DEBUG) {
|
|
print FILE "\\u$unicode = $parts$sizes $comment\n";
|
|
}
|
|
else {
|
|
print FILE "$comment\n\\u$unicode = $parts$sizes\n";
|
|
}
|
|
}
|
|
close(FILE);
|
|
}
|
|
|
|
sub indirect_pua
|
|
{
|
|
my($unicode) = @_;
|
|
|
|
# see if this code is the PUA
|
|
my($numeric) = hex($unicode);
|
|
die "ERROR *** Forbidden mapping" if $numeric == 0xF8FF;
|
|
if ($numeric >= 0xE000 && $numeric <= 0xF8FF) {
|
|
# return the flag to indicate to lookup in the PUA
|
|
return '\uF8FF';
|
|
}
|
|
# re-use the existing unicode point
|
|
$unicode =~ s/0x/\\u/;
|
|
return $unicode;
|
|
}
|
|
|
|
#########################################################################
|
|
# output_encoding_map:
|
|
#
|
|
# output the encoding map in html format for visual comparison with the
|
|
# graphical character map.
|
|
#########################################################################
|
|
sub output_encoding_map
|
|
{
|
|
my($font, $type) = @_;
|
|
$type = "-$type" if $type;
|
|
|
|
my($shorttype) = '';
|
|
$shorttype = '-t1' if $type eq '-type1';
|
|
$shorttype = '-ttf' if $type eq '-truetype';
|
|
|
|
my($file) = "$font$shorttype-encoding.html";
|
|
$file =~ s/ //g;
|
|
$file = lc($file);
|
|
print "Saving visual encoding result of $font in: $file\n";
|
|
|
|
local(*FILE);
|
|
open(FILE, ">$file") || die "Cannot open $file\n";
|
|
|
|
# header
|
|
print FILE "<html>\n"
|
|
. "<head>\n"
|
|
. " <title>$font$type - Visual Encoding Result</title>\n"
|
|
. " <style type='text/css'>.glyph {font-family: $font} </style>\n"
|
|
. "</head>\n"
|
|
. "<body>\n"
|
|
. "<h2>$font$type - Visual Encoding Result</h2>\n\n";
|
|
# column indices
|
|
print FILE "<table border='1' cellpadding='4'>\n<tr align='center'><td> </td>";
|
|
my($i, $j);
|
|
for ($j = 0; $j <= 15; ++$j) {
|
|
print FILE sprintf("<td bgcolor='silver'>%X </td>", $j);
|
|
}
|
|
print FILE "</tr>\n";
|
|
# cmap array
|
|
for ($i = 0; $i <= 15; ++$i) {
|
|
print FILE sprintf("<tr align='center'><td>%X </td>", $i);
|
|
for ($j = 0; $j <= 15; ++$j) {
|
|
my($glyph) = sprintf("0x%X%X", $i, $j);
|
|
if (defined $GLYPHDATA{$glyph}) {
|
|
my($unicode) = $MAP{$glyph};
|
|
my($data) = $GLYPHDATA{$glyph};
|
|
$unicode =~ s|0(x....)|&#$1;|;
|
|
$data =~ s| |<br />|g;
|
|
$data =~ s|(0x....):(.)|<font color='darkblue'>$1</font>:<font color='brown'>$2</font>|g;
|
|
print FILE "<td>"
|
|
. "<font size='-1' color='#666666'>$MAP{$glyph}</font><br />"
|
|
. "<span class='glyph'>$unicode</span><br />"
|
|
. $data
|
|
. "</td>";
|
|
}
|
|
else {
|
|
print FILE '<td> </td>';
|
|
}
|
|
}
|
|
print FILE "</tr>\n";
|
|
}
|
|
# footer
|
|
print FILE "</table>\n\n</body>\n</html>\n";
|
|
|
|
close(FILE);
|
|
}
|
|
|
|
#########################################################################
|
|
# load_DTD:
|
|
#
|
|
# load the mathml DTD so that we can comment outputs with entities
|
|
#########################################################################
|
|
sub load_DTD
|
|
{
|
|
my($file) = @_;
|
|
local(*FILE);
|
|
open(FILE, $file) || die "Cannot open $file\n";
|
|
while (<FILE>) {
|
|
while (/<!ENTITY\s+(\S+)\s+'&#x([^>]+);'>/g) {
|
|
my($entity, $unicode) = ($1, "0x$2");
|
|
$entity = chr(hex($unicode)) if hex($unicode) <= 0xFF;
|
|
if (defined $ENTITY{$unicode}) {
|
|
$ENTITY{$unicode} .= ", $entity";
|
|
}
|
|
else {
|
|
$ENTITY{$unicode} = "# $entity";
|
|
}
|
|
}
|
|
}
|
|
close(FILE);
|
|
}
|