pdfkit
Version:
A PDF generation library for Node.js
121 lines (98 loc) • 4.94 kB
text/coffeescript
Table = require '../table'
Data = require '../../data'
class PostTable extends Table
parse: (data) ->
data.pos = @offset
@format = data.readInt()
@italicAngle = data.readInt()
@underlinePosition = data.readShort()
@underlineThickness = data.readShort()
@isFixedPitch = data.readInt()
@minMemType42 = data.readInt()
@maxMemType42 = data.readInt()
@minMemType1 = data.readInt()
@maxMemType1 = data.readInt()
switch @format
when 0x00010000 then break
when 0x00020000
numberOfGlyphs = data.readUInt16()
@glyphNameIndex = []
for i in [0...numberOfGlyphs]
@glyphNameIndex.push data.readUInt16()
@names = []
while data.pos < @offset + @length
length = data.readByte()
@names.push data.readString(length)
when 0x00025000
numberOfGlyphs = data.readUInt16()
@offsets = data.read(numberOfGlyphs)
when 0x00030000 then break
when 0x00040000
@map = (data.readUInt32() for i in [0...@file.maxp.numGlyphs])
glyphFor: (code) ->
switch @format
when 0x00010000
POSTSCRIPT_GLYPHS[code] or '.notdef'
when 0x00020000
index = @glyphNameIndex[code]
if index <= 257
POSTSCRIPT_GLYPHS[index]
else
@names[index - 258] or '.notdef'
when 0x00025000
POSTSCRIPT_GLYPHS[code + @offsets[code]] or '.notdef'
when 0x00030000
'.notdef'
when 0x00040000
@map[code] or 0xFFFF
encode: (mapping) ->
return null unless @exists
raw = @raw()
return raw if @format is 0x00030000
table = new Data raw[0...32]
table.writeUInt32 0x00020000 # set format
table.pos = 32
indexes = []
strings = []
for id in mapping
post = @glyphFor id
position = POSTSCRIPT_GLYPHS.indexOf post
if position isnt -1
indexes.push position
else
indexes.push 257 + strings.length
strings.push post
table.writeUInt16 Object.keys(mapping).length
for index in indexes
table.writeUInt16 index
for string in strings
table.writeByte string.length
table.writeString string
return table.data
POSTSCRIPT_GLYPHS = '''
.notdef .null nonmarkingreturn space exclam quotedbl numbersign dollar percent
ampersand quotesingle parenleft parenright asterisk plus comma hyphen period slash
zero one two three four five six seven eight nine colon semicolon less equal greater
question at A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
bracketleft backslash bracketright asciicircum underscore grave
a b c d e f g h i j k l m n o p q r s t u v w x y z
braceleft bar braceright asciitilde Adieresis Aring Ccedilla Eacute Ntilde Odieresis
Udieresis aacute agrave acircumflex adieresis atilde aring ccedilla eacute egrave
ecircumflex edieresis iacute igrave icircumflex idieresis ntilde oacute ograve
ocircumflex odieresis otilde uacute ugrave ucircumflex udieresis dagger degree cent
sterling section bullet paragraph germandbls registered copyright trademark acute
dieresis notequal AE Oslash infinity plusminus lessequal greaterequal yen mu
partialdiff summation product pi integral ordfeminine ordmasculine Omega ae oslash
questiondown exclamdown logicalnot radical florin approxequal Delta guillemotleft
guillemotright ellipsis nonbreakingspace Agrave Atilde Otilde OE oe endash emdash
quotedblleft quotedblright quoteleft quoteright divide lozenge ydieresis Ydieresis
fraction currency guilsinglleft guilsinglright fi fl daggerdbl periodcentered
quotesinglbase quotedblbase perthousand Acircumflex Ecircumflex Aacute Edieresis
Egrave Iacute Icircumflex Idieresis Igrave Oacute Ocircumflex apple Ograve Uacute
Ucircumflex Ugrave dotlessi circumflex tilde macron breve dotaccent ring cedilla
hungarumlaut ogonek caron Lslash lslash Scaron scaron Zcaron zcaron brokenbar Eth
eth Yacute yacute Thorn thorn minus multiply onesuperior twosuperior threesuperior
onehalf onequarter threequarters franc Gbreve gbreve Idotaccent Scedilla scedilla
Cacute cacute Ccaron ccaron dcroat
'''.split(/\s+/g)
module.exports = PostTable