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add perl tools which generate character frequency map and statistics files
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ftang%netscape.com
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72
intl/chardet/tools/charfreq.pl
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72
intl/chardet/tools/charfreq.pl
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#!/usr/bin/perl
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#!/usr/bin/perl
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#
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# The contents of this file are subject to the Netscape 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/NPL/
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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.org code.
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#
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# The Initial Developer of the Original Code is Netscape
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# Communications Corporation. Portions created by Netscape are
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# Copyright (C) 1999 Netscape Communications Corporation. All
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# Rights Reserved.
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#
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# Contributor(s):
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#
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# This file is used to generate a EUC based character frequency map
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# It will read in one character frequency map file
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# Read in one new file , add the data to the frequency map
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# And then updte the character frequency map to the stdout
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# file format
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# character count
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open (STAT,$ARGV[0]) || die " cannot open data file $ARGV[0]\n";
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@count;
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while(<STAT>)
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{
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@k = split(/\s+/, $_);
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$count{$k[0]} = $k[1];
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}
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$count = 0;
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while(<STDIN>)
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{
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@ck = split /\s*/, $_;
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$s = 0;
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$fb = 0;
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$cl = $#ck;
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$j = 0;
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while($j < $cl) {
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$cc = unpack("C", $ck[$j]);
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if(0 eq $s ) {
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if($cc > 0x80) {
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if($cc > 0xa0) {
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$fb = $ck[$j];
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$s = 2;
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} else {
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$s = 1;
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}
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}
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} elsif (1 eq $s) {
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} else {
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if($cc > 0xa0) {
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$fb .= $ck[$j];
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$count{$fb}++;
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print $fb . " " .$count{$fb} . "\n";
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$s = 0;
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} else {
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$s = 1;
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}
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}
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$j = $j + 1;
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}
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}
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foreach $c (sort(keys( %count )))
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{
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print $c . " ". $count{$c} . "\n";
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}
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135
intl/chardet/tools/charfreqtostat.pl
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135
intl/chardet/tools/charfreqtostat.pl
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#!/usr/bin/perl
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#
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# The contents of this file are subject to the Netscape 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/NPL/
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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.org code.
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#
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# The Initial Developer of the Original Code is Netscape
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# Communications Corporation. Portions created by Netscape are
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# Copyright (C) 1999 Netscape Communications Corporation. All
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# Rights Reserved.
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#
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# Contributor(s):
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#
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# This tool will read in a character frequency map and then used it to generate
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# the xxxStatistics.h file in the mozilla/intl/chardet/src directory
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# For Big5 , we used
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# http://www.geocities.com/hao510/charfreq/sorted.zip
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# as the character frequency map file (remove first several lines
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# For EUC-TW, we convert the above file into EUC-TW first
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# For others, create the character frequency map file by ourself.
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sub GenNPL {
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my($ret) = << "END_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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* The contents of this file are subject to the Netscape 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/NPL/
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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.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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END_NPL
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return $ret;
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}
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print GenNPL();
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$total=0;
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@h;
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@l;
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while(<STDIN>)
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{
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@k = split(/\s+/, $_);
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@i = unpack("CCCC", $k[0]);
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# printf("%x %x %s",$i[0] , $i[1] , "[" . $k[0] . "] " . $i . " " . $j . " " . $k[1] ."\n");
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if((0xA1 <= $i[0]) && (0xA1 <= $i[1])){
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$total += $k[1];
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$v = $i[0] - 0x00A1;
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$h[$v] += $k[1];
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$u = $i[1] - 0x00A1;
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$l[$u] += $k[1];
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# print "hello $v $h[$v] $u $l[$u]\n";
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}
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}
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$ffh = 0.0;
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$ffl = 0.0;
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for($i=0x00A1;$i< 0x00FF ; $i++)
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{
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$fh[$i - 0x00a1] = $h[$i- 0x00a1] / $total;
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$ffh += $fh[$i - 0x00a1];
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$fl[$i - 0x00a1] = $l[$i- 0x00a1] / $total;
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$ffl += $fl[$i - 0x00a1];
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}
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$mh = $ffh / 94.0;
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$ml = $ffl / 94.0;
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$sumh=0.0;
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$suml=0.0;
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for($i=0x00A1;$i< 0x00FF ; $i++)
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{
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$sh = $fh[$i - 0x00a1] - $mh;
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$sh *= $sh;
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$sumh += $sh;
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$sl = $fl[$i - 0x00a1] - $ml;
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$sl *= $sl;
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$suml += $sl;
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}
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$sumh /= 94.0;
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$suml /= 94.0;
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$stdh = sqrt($sumh);
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$stdl = sqrt($suml);
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print "{\n";
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print " {\n";
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for($i=0x00A1;$i< 0x00FF ; $i++)
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{
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if($i eq 0xfe) {
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printf(" %.6ff \/\/ FreqH[%2x]\n", $fh[$i - 0x00a1] , $i);
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} else {
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printf(" %.6ff, \/\/ FreqH[%2x]\n", $fh[$i - 0x00a1] , $i);
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}
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}
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print " },\n";
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printf ("%.6ff, \/\/ Lead Byte StdDev\n", $stdh);
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printf ("%.6ff, \/\/ Lead Byte Mean\n", $mh);
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printf ("%.6ff, \/\/ Lead Byte Weight\n", $stdh / ($stdh + $stdl));
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print " {\n";
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for($i=0x00A1;$i< 0x00FF ; $i++)
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{
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if($i eq 0xfe) {
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printf(" %.6ff \/\/ FreqL[%2x]\n", $fl[$i - 0x00a1] , $i);
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} else {
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printf(" %.6ff, \/\/ FreqL[%2x]\n", $fl[$i - 0x00a1] , $i);
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}
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}
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print " },\n";
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printf ("%.6ff, \/\/ Trail Byte StdDev\n", $stdl);
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printf ("%.6ff, \/\/ Trail Byte Mean\n", $ml);
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printf ("%.6ff \/\/ Trial Byte Weight\n", $stdl / ($stdh + $stdl));
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print "};\n";
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