зеркало из https://github.com/mozilla/pjs.git
178 строки
6.6 KiB
Perl
178 строки
6.6 KiB
Perl
#!/usr/local/bin/perl
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#
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# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is IBM code.
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#
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# The Initial Developer of the Original Code is
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# IBM. Portions created by IBM are Copyright (C) International Business Machines Corporation, 2000. All Rights Reserved.
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# Portions created by the Initial Developer are Copyright (C) 2001
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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# Simon Montagu
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either of the GNU General Public License Version 2 or later (the "GPL"),
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# or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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# This program generates the header file symmtable.h from the Unicode
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# informative data file BidiMirroring.txt.
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# See the comments in that file for details of its structure and contents.
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#
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# At the moment we only handle cases where there is another Unicode
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# character whose glyph can serve as at least an adequate version of
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# the mirror image of the original character's glyph. This leaves open
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# the problem of how to provide mirrored glyphs for characters where
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# this is not the case.
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# Process the input file
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$ucp = "[0-9a-fA-F]{4}"; # Unicode code point (4 successive hex digits) as a pattern to match
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open ( UNICODATA , "< BidiMirroring.txt")
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|| die "Cannot find BidiMirroring.txt.\
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The file should be avaiable here:\
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http://www.unicode.org/Public/UNIDATA/BidiMirroring.txt\n";
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while (<UNICODATA>) {
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chop;
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if (/^($ucp); ($ucp) # (.+)/) { # If the line looks like this pattern
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# (example: 0028; 0029 # LEFT PARENTHESIS)
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if (hex($1) > 0xFFFF) {
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printf "ALERT! %X There are now symmetric characters outside the BMP\n", $1;
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}
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@table[hex($1)]=hex($2); # Enter the symmetric pair in the table
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@isblock[hex(substr($1, 0, 2))]=1; # Remember this block
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}
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}
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close(UNICODATA);
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# Generate license and header
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open ( OUT , "> ../base/symmtable.h")
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|| die "cannot open output ../base/src/symmtable.h file";
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$npl = <<END_OF_NPL;
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is IBM code.
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*
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* The Initial Developer of the Original Code is
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* International Business Machines Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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DO NOT EDIT THIS DOCUMENT !!! THIS DOCUMENT IS GENERATED BY
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mozilla/layout/tools/gensymmtable.pl
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*/
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END_OF_NPL
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print OUT $npl;
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# Generate data tables
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$indexed_blocks = 0;
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printf OUT "\n/* Indexes to symmtable by Unicode block */\n";
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printf OUT "const static PRUint8 symmtable_index[256] = {\n";
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print OUT "/* ";
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foreach $byte (0 .. 0xf) {
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printf OUT "_%X ", $byte;
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}
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print OUT "*/\n";
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foreach $row (0 .. 0xf) {
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printf OUT "/* %X_ */ ", $row;
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foreach $byte (0 .. 0xf) {
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if (@isblock[($row << 4) | ($byte)]) {
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printf OUT " %d,", ++$indexed_blocks;
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} else {
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printf OUT " 0,";
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}
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}
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print OUT "\n";
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}
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print OUT "};\n";
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printf OUT "const static PRUint16 symmtable[%d] [256] = {\n", ($indexed_blocks);
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foreach $block (0 .. 0xff) {
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if (@isblock[$block]) {
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if ($block != 0) {
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printf OUT ",\n"
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}
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printf OUT " {\n/* Block U%02X__ */\n", $block;
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print OUT "/* ";
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foreach $byte (0 .. 0xf) {
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printf OUT " _%X ", $byte;
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}
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print OUT "*/\n";
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foreach $row (0 .. 0xf) {
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printf OUT "/* %X_ */ ", $row;
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foreach $byte (0 .. 0xf) {
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$ix = ($block << 8) | ($row << 4) | ($byte);
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printf OUT ("%#6x", (@table[$ix]) ? @table[$ix] : $ix);
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if ((($row << 4) | $byte) < 0xff) {
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print OUT ", ";
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}
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}
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print OUT "\n";
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}
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print OUT " }";
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}
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}
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print OUT "\n};\n";
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# Generate conversion method
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print OUT "\nstatic PRUint32 Mirrored(PRUint32 u)\n{\n";
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print OUT " if (u < 0x10000) {\n";
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print OUT " PRUint8 index = symmtable_index[(u & 0xFFFFFF00) >> 8];\n";
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print OUT " if (index) {\n";
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print OUT " return symmtable[index - 1] [u & 0xFF];\n";
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print OUT " }\n";
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print OUT " }\n return u;\n}\n";
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close(OUT);
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