#------------------------------------------------------------------------------
# File: Font.pm
#
# Description: Read meta information from font files
#
# Revisions: 2010/01/15 - P. Harvey Created
#
# References: 1) http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6.html
# 2) http://www.microsoft.com/typography/otspec/otff.htm
# 3) http://partners.adobe.com/public/developer/opentype/index_font_file.html
# 4) http://partners.adobe.com/public/developer/en/font/5178.PFM.pdf
# 5) http://opensource.adobe.com/svn/opensource/flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/util/MimeMappings.java
# 6) http://www.adobe.com/devnet/font/pdfs/5004.AFM_Spec.pdf
#------------------------------------------------------------------------------
package Image::ExifTool::Font;
use strict;
use vars qw($VERSION %ttLang);
use Image::ExifTool qw(:DataAccess :Utils);
$VERSION = '1.05';
sub ProcessOTF($$);
# TrueType 'name' platform codes
my %ttPlatform = (
0 => 'Unicode',
1 => 'Macintosh',
2 => 'ISO',
3 => 'Windows',
4 => 'Custom',
);
# convert TrueType 'name' character encoding to ExifTool Charset (ref 1/2)
my %ttCharset = (
Macintosh => {
0 => 'MacRoman', 17 => 'MacMalayalam',
1 => 'MacJapanese', 18 => 'MacSinhalese',
2 => 'MacChineseTW', 19 => 'MacBurmese',
3 => 'MacKorean', 20 => 'MacKhmer',
4 => 'MacArabic', 21 => 'MacThai',
5 => 'MacHebrew', 22 => 'MacLaotian',
6 => 'MacGreek', 23 => 'MacGeorgian',
7 => 'MacCyrillic', 24 => 'MacArmenian', # 7=Russian
8 => 'MacRSymbol', 25 => 'MacChineseCN',
9 => 'MacDevanagari', 26 => 'MacTibetan',
10 => 'MacGurmukhi', 27 => 'MacMongolian',
11 => 'MacGujarati', 28 => 'MacGeez',
12 => 'MacOriya', 29 => 'MacCyrillic', # 29=Slavic
13 => 'MacBengali', 30 => 'MacVietnam',
14 => 'MacTamil', 31 => 'MacSindhi',
15 => 'MacTelugu', 32 => '', # 32=uninterpreted
16 => 'MacKannada',
},
Windows => {
0 => 'Symbol', 4 => 'Big5',
1 => 'UCS2', 5 => 'Wansung',
2 => 'ShiftJIS', 6 => 'Johab',
3 => 'PRC', 10 => 'UCS4',
},
Unicode => {
# (we don't currently handle the various Unicode flavours)
0 => 'UCS2', # Unicode 1.0 semantics
1 => 'UCS2', # Unicode 1.1 semantics
2 => 'UCS2', # ISO 10646 semantics
3 => 'UCS2', # Unicode 2.0 and onwards semantics, Unicode BMP only.
4 => 'UCS2', # Unicode 2.0 and onwards semantics, Unicode full repertoire.
# 5 => Unicode Variation Sequences (not used in Naming table)
},
ISO => { # (deprecated)
0 => 'UTF8', # (7-bit ASCII)
1 => 'UCS2', # ISO 10646
2 => 'Latin', # ISO 8859-1
},
Custom => { },
);
# convert TrueType 'name' language code to ExifTool language code
%ttLang = (
# Macintosh language codes (also used by QuickTime.pm)
# oddities:
# 49 - Cyrllic version 83 - Roman
# 50 - Arabic version 84 - Arabic
# 146 - with dot above
Macintosh => {
0 => 'en', 24 => 'lt', 48 => 'kk', 72 => 'ml', 129 => 'eu',
1 => 'fr', 25 => 'pl', 49 => 'az', 73 => 'kn', 130 => 'ca',
2 => 'de', 26 => 'hu', 50 => 'az', 74 => 'ta', 131 => 'la',
3 => 'it', 27 => 'et', 51 => 'hy', 75 => 'te', 132 => 'qu',
4 => 'nl', 28 => 'lv', 52 => 'ka', 76 => 'si', 133 => 'gn',
5 => 'sv', 29 => 'smi', 53 => 'ro', 77 => 'my', 134 => 'ay',
6 => 'es', 30 => 'fo', 54 => 'ky', 78 => 'km', 135 => 'tt',
7 => 'da', 31 => 'fa', 55 => 'tg', 79 => 'lo', 136 => 'ug',
8 => 'pt', 32 => 'ru', 56 => 'tk', 80 => 'vi', 137 => 'dz',
9 => 'no', 33 => 'zh-CN', 57 => 'mn-MN', 81 => 'id', 138 => 'jv',
10 => 'he', 34 => 'nl', 58 => 'mn-CN', 82 => 'tl', 139 => 'su',
11 => 'ja', 35 => 'ga', 59 => 'ps', 83 => 'ms-MY', 140 => 'gl',
12 => 'ar', 36 => 'sq', 60 => 'ku', 84 => 'ms-BN', 141 => 'af',
13 => 'fi', 37 => 'ro', 61 => 'ks', 85 => 'am', 142 => 'br',
14 => 'iu', 38 => 'cs', 62 => 'sd', 86 => 'ti', 144 => 'gd',
15 => 'is', 39 => 'sk', 63 => 'bo', 87 => 'om', 145 => 'vg',
16 => 'mt', 40 => 'sl', 64 => 'ne', 88 => 'so', 146 => 'ga',
17 => 'tr', 41 => 'yi', 65 => 'sa', 89 => 'sw', 147 => 'rar',
18 => 'hr', 42 => 'sr', 66 => 'mr', 90 => 'rw', 148 => 'el',
19 => 'zh-TW', 43 => 'mk', 67 => 'bn', 91 => 'rn', 149 => 'kl',
20 => 'ur', 44 => 'bg', 68 => 'as', 92 => 'ny', 150 => 'az',
21 => 'hi', 45 => 'uk', 69 => 'gu', 93 => 'mg',
22 => 'th', 46 => 'be', 70 => 'pa', 94 => 'eo',
23 => 'ko', 47 => 'uz', 71 => 'or', 128 => 'cy',
},
# Windows language codes (http://msdn.microsoft.com/en-us/library/0h88fahh(VS.85).aspx)
# Notes: This isn't an exact science. The reference above gives language codes
# which are different from some ISO 639-1 numbers. Also, some Windows language
# codes don't appear to have ISO 639-1 equivalents.
# 0x0428 - fa by ref above
# 0x048c - no ISO equivalent
# 0x081a/0x83c - sr-SP
# 0x0c0a - modern?
# 0x2409 - Carribean country code not found in ISO 3166-1
Windows => {
0x0401 => 'ar-SA', 0x0438 => 'fo', 0x0481 => 'mi', 0x1409 => 'en-NZ',
0x0402 => 'bg', 0x0439 => 'hi', 0x0482 => 'oc', 0x140a => 'es-CR',
0x0403 => 'ca', 0x043a => 'mt', 0x0483 => 'co', 0x140c => 'fr-LU',
0x0404 => 'zh-TW', 0x043b => 'se-NO', 0x0484 => 'gsw', 0x141a => 'bs-BA',
0x0405 => 'cs', 0x043c => 'gd', 0x0485 => 'sah', 0x143b => 'smj-SE',
0x0406 => 'da', 0x043d => 'yi', 0x0486 => 'ny', 0x1801 => 'ar-MA',
0x0407 => 'de-DE', 0x043e => 'ms-MY', 0x0487 => 'rw', 0x1809 => 'en-IE',
0x0408 => 'el', 0x043f => 'kk', 0x048c => 'Dari', 0x180a => 'es-PA',
0x0409 => 'en-US', 0x0440 => 'ky', 0x0801 => 'ar-IQ', 0x180c => 'fr-MC',
0x040a => 'es-ES', 0x0441 => 'sw', 0x0804 => 'zh-CN', 0x181a => 'sr-BA',
0x040b => 'fi', 0x0442 => 'tk', 0x0807 => 'de-CH', 0x183b => 'sma-NO',
0x040c => 'fr-FR', 0x0443 => 'uz-UZ', 0x0809 => 'en-GB', 0x1c01 => 'ar-TN',
0x040d => 'he', 0x0444 => 'tt', 0x080a => 'es-MX', 0x1c09 => 'en-ZA',
0x040e => 'hu', 0x0445 => 'bn-IN', 0x080c => 'fr-BE', 0x1c0a => 'es-DO',
0x040f => 'is', 0x0446 => 'pa', 0x0810 => 'it-CH', 0x1c1a => 'sr-BA',
0x0410 => 'it-IT', 0x0447 => 'gu', 0x0813 => 'nl-BE', 0x1c3b => 'sma-SE',
0x0411 => 'ja', 0x0448 => 'wo', 0x0814 => 'nn', 0x2001 => 'ar-OM',
0x0412 => 'ko', 0x0449 => 'ta', 0x0816 => 'pt-PT', 0x2009 => 'en-JM',
0x0413 => 'nl-NL', 0x044a => 'te', 0x0818 => 'ro-MO', 0x200a => 'es-VE',
0x0414 => 'no-NO', 0x044b => 'kn', 0x0819 => 'ru-MO', 0x201a => 'bs-BA',
0x0415 => 'pl', 0x044c => 'ml', 0x081a => 'sr-RS', 0x203b => 'sms',
0x0416 => 'pt-BR', 0x044d => 'as', 0x081d => 'sv-FI', 0x2401 => 'ar-YE',
0x0417 => 'rm', 0x044e => 'mr', 0x082c => 'az-AZ', 0x2409 => 'en-CB',
0x0418 => 'ro', 0x044f => 'sa', 0x082e => 'dsb', 0x240a => 'es-CO',
0x0419 => 'ru', 0x0450 => 'mn-MN', 0x083b => 'se-SE', 0x243b => 'smn',
0x041a => 'hr', 0x0451 => 'bo', 0x083c => 'ga', 0x2801 => 'ar-SY',
0x041b => 'sk', 0x0452 => 'cy', 0x083e => 'ms-BN', 0x2809 => 'en-BZ',
0x041c => 'sq', 0x0453 => 'km', 0x0843 => 'uz-UZ', 0x280a => 'es-PE',
0x041d => 'sv-SE', 0x0454 => 'lo', 0x0845 => 'bn-BD', 0x2c01 => 'ar-JO',
0x041e => 'th', 0x0456 => 'gl', 0x0850 => 'mn-CN', 0x2c09 => 'en-TT',
0x041f => 'tr', 0x0457 => 'kok', 0x085d => 'iu-CA', 0x2c0a => 'es-AR',
0x0420 => 'ur', 0x045a => 'syr', 0x085f => 'tmh', 0x3001 => 'ar-LB',
0x0421 => 'id', 0x045b => 'si', 0x086b => 'qu-EC', 0x3009 => 'en-ZW',
0x0422 => 'uk', 0x045d => 'iu-CA', 0x0c01 => 'ar-EG', 0x300a => 'es-EC',
0x0423 => 'be', 0x045e => 'am', 0x0c04 => 'zh-HK', 0x3401 => 'ar-KW',
0x0424 => 'sl', 0x0461 => 'ne', 0x0c07 => 'de-AT', 0x3409 => 'en-PH',
0x0425 => 'et', 0x0462 => 'fy', 0x0c09 => 'en-AU', 0x340a => 'es-CL',
0x0426 => 'lv', 0x0463 => 'ps', 0x0c0a => 'es-ES', 0x3801 => 'ar-AE',
0x0427 => 'lt', 0x0464 => 'fil', 0x0c0c => 'fr-CA', 0x380a => 'es-UY',
0x0428 => 'tg', 0x0465 => 'dv', 0x0c1a => 'sr-RS', 0x3c01 => 'ar-BH',
0x042a => 'vi', 0x0468 => 'ha', 0x0c3b => 'se-FI', 0x3c0a => 'es-PY',
0x042b => 'hy', 0x046a => 'yo', 0x0c6b => 'qu-PE', 0x4001 => 'ar-QA',
0x042c => 'az-AZ', 0x046b => 'qu-BO', 0x1001 => 'ar-LY', 0x4009 => 'en-IN',
0x042d => 'eu', 0x046c => 'st', 0x1004 => 'zh-SG', 0x400a => 'es-BO',
0x042e => 'hsb', 0x046d => 'ba', 0x1007 => 'de-LU', 0x4409 => 'en-MY',
0x042f => 'mk', 0x046e => 'lb', 0x1009 => 'en-CA', 0x440a => 'es-SV',
0x0430 => 'st', 0x046f => 'kl', 0x100a => 'es-GT', 0x4809 => 'en-SG',
0x0431 => 'ts', 0x0470 => 'ig', 0x100c => 'fr-CH', 0x480a => 'es-HN',
0x0432 => 'tn', 0x0478 => 'yi', 0x101a => 'hr-BA', 0x4c0a => 'es-NI',
0x0434 => 'xh', 0x047a => 'arn', 0x103b => 'smj-NO',0x500a => 'es-PR',
0x0435 => 'zu', 0x047c => 'moh', 0x1401 => 'ar-DZ', 0x540a => 'es-US',
0x0436 => 'af', 0x047e => 'br', 0x1404 => 'zh-MO',
0x0437 => 'ka', 0x0480 => 'ug', 0x1407 => 'de-LI',
},
Unicode => { },
ISO => { },
Custom => { },
);
# eclectic table of tags for various format font files
%Image::ExifTool::Font::Main = (
GROUPS => { 2 => 'Document' },
NOTES => q{
This table contains a collection of tags found in font files of various
formats. ExifTool current recognizes OTF, TTF, TTC, DFONT, PFA, PFB, PFM,
AFM, ACFM and AMFM font files.
},
name => {
SubDirectory => { TagTable => 'Image::ExifTool::Font::Name' },
},
PFM => {
Name => 'PFMHeader',
SubDirectory => { TagTable => 'Image::ExifTool::Font::PFM' },
},
PSInfo => {
Name => 'PSFontInfo',
SubDirectory => { TagTable => 'Image::ExifTool::Font::PSInfo' },
},
AFM => {
Name => 'AFM',
SubDirectory => { TagTable => 'Image::ExifTool::Font::AFM' },
},
numfonts => 'NumFonts',
fontname => 'FontName',
postfont => {
Name => 'PostScriptFontName',
Description => 'PostScript Font Name',
},
);
# TrueType name tags (ref 1/2)
%Image::ExifTool::Font::Name = (
GROUPS => { 2 => 'Document' },
NOTES => q{
The following tags are extracted from the TrueType font "name" table found
in OTF, TTF, TTC and DFONT files. These tags support localized languages by
adding a hyphen followed by a language code to the end of the tag name (ie.
"Copyright-fr" or "Licence-en-US"). Tags with no language code use the
default language of "en".
},
0 => { Name => 'Copyright', Groups => { 2 => 'Author' } },
1 => 'FontFamily',
2 => 'FontSubfamily',
3 => 'FontSubfamilyID',
4 => 'FontName', # full name
5 => 'NameTableVersion',
6 => { Name => 'PostScriptFontName', Description => 'PostScript Font Name' },
7 => 'Trademark',
8 => 'Manufacturer',
9 => 'Designer',
10 => 'Description',
11 => 'VendorURL',
12 => 'DesignerURL',
13 => 'License',
14 => 'LicenseInfoURL',
16 => 'PreferredFamily',
17 => 'PreferredSubfamily',
18 => 'CompatibleFontName',
19 => 'SampleText',
20 => {
Name => 'PostScriptFontName',
Description => 'PostScript Font Name',
},
21 => 'WWSFamilyName',
22 => 'WWSSubfamilyName',
);
# PostScript Font Metric file header (ref 4)
%Image::ExifTool::Font::PFM = (
GROUPS => { 2 => 'Document' },
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
NOTES => 'Tags extracted from the PFM file header.',
0 => {
Name => 'PFMVersion',
Format => 'int16u',
PrintConv => 'sprintf("%x.%.2x",$val>>8,$val&0xff)',
},
6 => { Name => 'Copyright', Format => 'string[60]', Groups => { 2 => 'Author' } },
66 => { Name => 'FontType', Format => 'int16u' },
68 => { Name => 'PointSize', Format => 'int16u' },
70 => { Name => 'YResolution', Format => 'int16u' },
72 => { Name => 'XResolution', Format => 'int16u' },
74 => { Name => 'Ascent', Format => 'int16u' },
76 => { Name => 'InternalLeading', Format => 'int16u' },
78 => { Name => 'ExternalLeading', Format => 'int16u' },
80 => { Name => 'Italic' },
81 => { Name => 'Underline' },
82 => { Name => 'Strikeout' },
83 => { Name => 'Weight', Format => 'int16u' },
85 => { Name => 'CharacterSet' },
86 => { Name => 'PixWidth', Format => 'int16u' },
88 => { Name => 'PixHeight', Format => 'int16u' },
90 => { Name => 'PitchAndFamily' },
91 => { Name => 'AvgWidth', Format => 'int16u' },
93 => { Name => 'MaxWidth', Format => 'int16u' },
95 => { Name => 'FirstChar' },
96 => { Name => 'LastChar' },
97 => { Name => 'DefaultChar' },
98 => { Name => 'BreakChar' },
99 => { Name => 'WidthBytes', Format => 'int16u' },
# 101 => { Name => 'DeviceTypeOffset', Format => 'int32u' },
# 105 => { Name => 'FontNameOffset', Format => 'int32u' },
# 109 => { Name => 'BitsPointer', Format => 'int32u' },
# 113 => { Name => 'BitsOffset', Format => 'int32u' },
);
# PostScript FontInfo attributes (PFA, PFB) (ref PH)
%Image::ExifTool::Font::PSInfo = (
GROUPS => { 2 => 'Document' },
NOTES => 'Tags extracted from PostScript font files (PFA and PFB).',
FullName => { },
FamilyName => { Name => 'FontFamily' },
Weight => { },
ItalicAngle => { },
isFixedPitch=> { },
UnderlinePosition => { },
UnderlineThickness => { },
Copyright => { Groups => { 2 => 'Author' } },
Notice => { Groups => { 2 => 'Author' } },
version => { },
FontName => { },
FontType => { },
FSType => { },
);
# Adobe Font Metrics tags (AFM) (ref 6)
%Image::ExifTool::Font::AFM = (
GROUPS => { 2 => 'Document' },
NOTES => 'Tags extracted from Adobe Font Metrics files (AFM, ACFM and AMFM).',
'Creation Date' => { Name => 'CreateDate', Groups => { 2 => 'Time' } },
FontName => { },
FullName => { },
FamilyName => { Name => 'FontFamily' },
Weight => { },
Version => { },
Notice => { Groups => { 2 => 'Author' } },
EncodingScheme => { },
MappingScheme => { },
EscChar => { },
CharacterSet=> { },
Characters => { },
IsBaseFont => { },
# VVector => { },
IsFixedV => { },
CapHeight => { },
XHeight => { },
Ascender => { },
Descender => { },
);
#------------------------------------------------------------------------------
# Read information from a TrueType font collection (TTC) (refs 2,3)
# Inputs: 0) ExifTool ref, 1) dirInfo ref
# Returns: 1 on success, 0 if this wasn't a valid TrueType font collection
sub ProcessTTC($$)
{
my ($exifTool, $dirInfo) = @_;
my $raf = $$dirInfo{RAF};
my ($buff, $i);
return 0 unless $raf->Read($buff, 12) == 12;
return 0 unless $buff =~ /^ttcf\0[\x01\x02]\0\0/;
SetByteOrder('MM');
my $num = Get32u(\$buff, 8);
# might as well put a limit on the number of fonts we will parse (< 256)
return 0 unless $num < 0x100 and $raf->Read($buff, $num * 4) == $num * 4;
$exifTool->SetFileType('TTC');
my $tagTablePtr = GetTagTable('Image::ExifTool::Font::Main');
$exifTool->HandleTag($tagTablePtr, 'numfonts', $num);
# loop through all fonts in the collection
for ($i=0; $i<$num; ++$i) {
my $n = $i + 1;
$exifTool->VPrint(0, "Font $n:\n");
$$exifTool{SET_GROUP1} = "+$n";
my $offset = Get32u(\$buff, $i * 4);
$raf->Seek($offset, 0) or last;
ProcessOTF($exifTool, $dirInfo) or last;
}
delete $$exifTool{SET_GROUP1};
return 1;
}
#------------------------------------------------------------------------------
# Read information from a TrueType font file (OTF or TTF) (refs 1,2)
# Inputs: 0) ExifTool ref, 1) dirInfo ref
# Returns: 1 on success, 0 if this wasn't a valid TrueType font file
sub ProcessOTF($$)
{
my ($exifTool, $dirInfo) = @_;
my $raf = $$dirInfo{RAF};
my ($tbl, $buff, $pos, $i);
my $base = $$dirInfo{Base} || 0;
return 0 unless $raf->Read($buff, 12) == 12;
return 0 unless $buff =~ /^(\0\x01\0\0|OTTO|true|typ1)[\0\x01]/;
$exifTool->SetFileType($1 eq 'OTTO' ? 'OTF' : 'TTF');
SetByteOrder('MM');
my $numTables = Get16u(\$buff, 4);
return 0 unless $numTables > 0 and $numTables < 0x200;
my $len = $numTables * 16;
return 0 unless $raf->Read($tbl, $len) == $len;
my $verbose = $exifTool->Options('Verbose');
my $oldIndent = $$exifTool{INDENT};
$$exifTool{INDENT} .= '| ';
$exifTool->VerboseDir('TrueType', $numTables) if $verbose;
for ($pos=0; $pos<$len; $pos+=16) {
# look for 'name' table
my $tag = substr($tbl, $pos, 4);
next unless $tag eq 'name' or $verbose;
my $offset = Get32u(\$tbl, $pos + 8);
my $size = Get32u(\$tbl, $pos + 12);
unless ($raf->Seek($offset+$base, 0) and $raf->Read($buff, $size) == $size) {
$exifTool->Warn("Error reading '$tag' data");
next;
}
if ($verbose) {
$tag =~ s/([\0-\x1f\x80-\xff])/sprintf('\x%.2x',ord $1)/ge;
my $str = sprintf("%s%d) Tag '%s' (offset 0x%.4x, %d bytes)\n",
$$exifTool{INDENT}, $pos/16, $tag, $offset, $size);
$exifTool->VPrint(0, $str);
$exifTool->VerboseDump(\$buff, Addr => $offset) if $verbose > 2;
next unless $tag eq 'name';
}
next unless $size >= 8;
my $entries = Get16u(\$buff, 2);
my $recEnd = 6 + $entries * 12;
if ($recEnd > $size) {
$exifTool->Warn('Truncated name record');
last;
}
my $strStart = Get16u(\$buff, 4);
if ($strStart < $recEnd or $strStart > $size) {
$exifTool->Warn('Invalid string offset');
last;
}
# parse language-tag record (in format 1 Naming table only) (ref 2)
my %langTag;
if (Get16u(\$buff, 0) == 1 and $recEnd + 2 <= $size) {
my $langTags = Get16u(\$buff, $recEnd);
if ($langTags and $recEnd + 2 + $langTags * 4 < $size) {
for ($i=0; $i<$langTags; ++$i) {
my $pt = $recEnd + 2 + $i * 4;
my $langLen = Get16u(\$buff, $pt);
# make sure the language string length is reasonable (UTF-16BE)
last if $langLen == 0 or $langLen & 0x01 or $langLen > 40;
my $langPt = Get16u(\$buff, $pt + 2) + $strStart;
last if $langPt + $langLen > $size;
my $lang = substr($buff, $langPt, $langLen);
$lang = $exifTool->Decode($lang,'UCS2','MM','UTF8');
$lang =~ tr/-_a-zA-Z0-9//dc; # remove naughty characters
$langTag{$i + 0x8000} = $lang;
}
}
}
my $tagTablePtr = GetTagTable('Image::ExifTool::Font::Name');
$$exifTool{INDENT} .= '| ';
$exifTool->VerboseDir('Name', $entries) if $verbose;
for ($i=0; $i<$entries; ++$i) {
my $pt = 6 + $i * 12;
my $platform = Get16u(\$buff, $pt);
my $encoding = Get16u(\$buff, $pt + 2);
my $langID = Get16u(\$buff, $pt + 4);
my $nameID = Get16u(\$buff, $pt + 6);
my $strLen = Get16u(\$buff, $pt + 8);
my $strPt = Get16u(\$buff, $pt + 10) + $strStart;
if ($strPt + $strLen <= $size) {
my $val = substr($buff, $strPt, $strLen);
my ($lang, $charset, $extra);
my $sys = $ttPlatform{$platform};
# translate from specified encoding
if ($sys) {
$lang = $ttLang{$sys}{$langID} || $langTag{$langID};
$charset = $ttCharset{$sys}{$encoding};
if (not $charset) {
if (not defined $charset and not $$exifTool{FontWarn}) {
$exifTool->Warn("Unknown $sys character set ($encoding)");
$$exifTool{FontWarn} = 1;
}
} else {
# translate to ExifTool character set
$val = $exifTool->Decode($val, $charset);
}
} else {
$exifTool->Warn("Unknown platform ($platform) for name $nameID");
}
# get the tagInfo for our specific language (use 'en' for default)
my $tagInfo = $exifTool->GetTagInfo($tagTablePtr, $nameID);
if ($tagInfo and $lang and $lang ne 'en') {
my $langInfo = Image::ExifTool::GetLangInfo($tagInfo, $lang);
$tagInfo = $langInfo if $langInfo;
}
if ($verbose) {
$langID > 0x400 and $langID = sprintf('0x%x', $langID);
$extra = ", Plat=$platform/" . ($sys || 'Unknown') . ', ' .
"Enc=$encoding/" . ($charset || 'Unknown') . ', ' .
"Lang=$langID/" . ($lang || 'Unknown');
}
$exifTool->HandleTag($tagTablePtr, $nameID, $val,
TagInfo => $tagInfo,
DataPt => \$buff,
DataPos => $offset,
Start => $strPt,
Size => $strLen,
Index => $i,
Extra => $extra,
);
}
}
$$exifTool{INDENT} = $oldIndent . '| ';
last unless $verbose;
}
$$exifTool{INDENT} = $oldIndent;
return 1;
}
#------------------------------------------------------------------------------
# Read information from an Adobe Font Metrics file (AFM, ACFM, AMFM) (ref 6)
# Inputs: 0) ExifTool ref, 1) dirInfo ref
# Returns: 1 on success, 0 if this wasn't a recognized AFM-type file
sub ProcessAFM($$)
{
my ($exifTool, $dirInfo) = @_;
my $raf = $$dirInfo{RAF};
my ($buff, $comment);
require Image::ExifTool::PostScript;
local $/ = Image::ExifTool::PostScript::GetInputRecordSeparator($raf);
$raf->ReadLine($buff);
return 0 unless $buff =~ /^Start(Comp|Master)?FontMetrics\s+\d+/;
my $ftyp = $1 ? ($1 eq 'Comp' ? 'ACFM' : 'AMFM') : 'AFM';
$exifTool->SetFileType($ftyp, 'application/x-font-afm');
my $tagTablePtr = GetTagTable('Image::ExifTool::Font::AFM');
for (;;) {
$raf->ReadLine($buff) or last;
if (defined $comment and $buff !~ /^Comment\s/) {
$exifTool->FoundTag('Comment', $comment);
undef $comment;
}
$buff =~ /^(\w+)\s+(.*?)[\x0d\x0a]/ or next;
my ($tag, $val) = ($1, $2);
if ($tag eq 'Comment' and $val =~ /^(Creation Date):\s+(.*)/) {
($tag, $val) = ($1, $2);
}
$val =~ s/^\((.*)\)$/$1/; # (some values may be in brackets)
if ($tag eq 'Comment') {
# concatinate all comments into a single value
$comment = defined($comment) ? "$comment\n$val" : $val;
next;
}
unless ($exifTool->HandleTag($tagTablePtr, $tag, $val)) {
# end parsing if we start any subsection
last if $tag =~ /^Start/ and $tag ne 'StartDirection';
}
}
return 1;
}
#------------------------------------------------------------------------------
# Read information from various format font files
# Inputs: 0) ExifTool ref, 1) dirInfo ref
# Returns: 1 on success, 0 if this wasn't a recognized Font file
sub ProcessFont($$)
{
my ($exifTool, $dirInfo) = @_;
my $raf = $$dirInfo{RAF};
my ($buff, $buf2, $rtnVal);
return 0 unless $raf->Read($buff, 24) and $raf->Seek(0,0);
if ($buff =~ /^(\0\x01\0\0|OTTO|true|typ1)[\0\x01]/) { # OTF, TTF
$rtnVal = ProcessOTF($exifTool, $dirInfo);
} elsif ($buff =~ /^ttcf\0[\x01\x02]\0\0/) { # TTC
$rtnVal = ProcessTTC($exifTool, $dirInfo);
} elsif ($buff =~ /^Start(Comp|Master)?FontMetrics\s+\d+/s) { # AFM
$rtnVal = ProcessAFM($exifTool, $dirInfo);
} elsif ($buff =~ /^(.{6})?%!(PS-(AdobeFont-|Bitstream )|FontType1-)/s) {# PFA, PFB
$raf->Seek(6,0) and $exifTool->SetFileType('PFB') if $1;
require Image::ExifTool::PostScript;
$rtnVal = Image::ExifTool::PostScript::ProcessPS($exifTool, $dirInfo);
} elsif ($buff =~ /^\0[\x01\x02]/ and $raf->Seek(0, 2) and # PFM
# validate file size
$raf->Tell() > 117 and $raf->Tell() == unpack('x2V',$buff) and
# read PFM header
$raf->Seek(0,0) and $raf->Read($buff,117) == 117 and
# validate "DeviceType" string (must be "PostScript\0")
SetByteOrder('II') and $raf->Seek(Get32u(\$buff, 101), 0) and
# the DeviceType should be "PostScript\0", but FontForge
# incorrectly writes "Postscript\0", so ignore case
$raf->Read($buf2, 11) == 11 and lc($buf2) eq "postscript\0")
{
$exifTool->SetFileType('PFM');
SetByteOrder('II');
my $tagTablePtr = GetTagTable('Image::ExifTool::Font::Main');
# process the PFM header
$exifTool->HandleTag($tagTablePtr, 'PFM', $buff);
# extract the font names
my $nameOff = Get32u(\$buff, 105);
if ($raf->Seek($nameOff, 0) and $raf->Read($buff, 256) and
$buff =~ /^([\x20-\xff]+)\0([\x20-\xff]+)\0/)
{
$exifTool->HandleTag($tagTablePtr, 'fontname', $1);
$exifTool->HandleTag($tagTablePtr, 'postfont', $2);
}
$rtnVal = 1;
} else {
$rtnVal = 0;
}
return $rtnVal;
}
1; # end
__END__
=head1 NAME
Image::ExifTool::Font - Read meta information from font files
=head1 SYNOPSIS
This module is used by Image::ExifTool
=head1 DESCRIPTION
This module contains the routines required by Image::ExifTool to read meta
information from various format font files. Currently recognized font file
types are OTF, TTF, TTC, DFONT, PFA, PFB, PFM, AFM, ACFM and AMFM.
=head1 AUTHOR
Copyright 2003-2011, Phil Harvey (phil at owl.phy.queensu.ca)
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
=head1 REFERENCES
=over 4
=item L<http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6.html>
=item L<http://www.microsoft.com/typography/otspec/otff.htm>
=item L<http://partners.adobe.com/public/developer/opentype/index_font_file.html>
=item L<http://partners.adobe.com/public/developer/en/font/5178.PFM.pdf>
=item L<http://opensource.adobe.com/svn/opensource/flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/util/MimeMappings.java>
=item L<http://www.adobe.com/devnet/font/pdfs/5004.AFM_Spec.pdf>
=back
=head1 SEE ALSO
L<Image::ExifTool::TagNames/Font Tags>,
L<Image::ExifTool(3pm)|Image::ExifTool>
=cut