Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 1 | """cffLib.py -- read/write tools for Adobe CFF fonts.""" |
| 2 | |
Just | ec46d16 | 1999-12-20 22:02:10 +0000 | [diff] [blame] | 3 | # |
jvr | 7ce02ea | 2002-05-17 20:04:05 +0000 | [diff] [blame^] | 4 | # $Id: cffLib.py,v 1.19 2002-05-17 20:04:05 jvr Exp $ |
Just | ec46d16 | 1999-12-20 22:02:10 +0000 | [diff] [blame] | 5 | # |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 6 | |
| 7 | import struct, sstruct |
| 8 | import string |
| 9 | import types |
Just | 528614e | 2000-01-16 22:14:02 +0000 | [diff] [blame] | 10 | from fontTools.misc import psCharStrings |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 11 | |
| 12 | |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 13 | DEBUG = 0 |
| 14 | |
| 15 | |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 16 | cffHeaderFormat = """ |
| 17 | major: B |
| 18 | minor: B |
| 19 | hdrSize: B |
| 20 | offSize: B |
| 21 | """ |
| 22 | |
| 23 | class CFFFontSet: |
| 24 | |
| 25 | def __init__(self): |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 26 | pass |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 27 | |
jvr | a2a75b3 | 2002-05-13 11:25:17 +0000 | [diff] [blame] | 28 | def decompile(self, file): |
| 29 | sstruct.unpack(cffHeaderFormat, file.read(4), self) |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 30 | assert self.major == 1 and self.minor == 0, \ |
| 31 | "unknown CFF format: %d.%d" % (self.major, self.minor) |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 32 | |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 33 | self.fontNames = list(Index(file, "fontNames")) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 34 | self.topDictIndex = TopDictIndex(file) |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 35 | self.strings = IndexedStrings(file) |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 36 | self.GlobalSubrs = CharStringIndex(file, name="GlobalSubrsIndex") |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 37 | self.topDictIndex.strings = self.strings |
jvr | 016ca76 | 2002-05-16 18:38:03 +0000 | [diff] [blame] | 38 | self.topDictIndex.GlobalSubrs = self.GlobalSubrs |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 39 | |
| 40 | def __len__(self): |
| 41 | return len(self.fontNames) |
| 42 | |
| 43 | def keys(self): |
| 44 | return self.fontNames[:] |
| 45 | |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 46 | def values(self): |
| 47 | return self.topDictIndex |
| 48 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 49 | def __getitem__(self, name): |
| 50 | try: |
| 51 | index = self.fontNames.index(name) |
| 52 | except ValueError: |
| 53 | raise KeyError, name |
jvr | 016ca76 | 2002-05-16 18:38:03 +0000 | [diff] [blame] | 54 | return self.topDictIndex[index] |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 55 | |
| 56 | def compile(self): |
| 57 | strings = IndexedStrings() |
| 58 | XXXX |
| 59 | |
| 60 | def toXML(self, xmlWriter, progress=None): |
| 61 | xmlWriter.newline() |
| 62 | for fontName in self.fontNames: |
| 63 | xmlWriter.begintag("CFFFont", name=fontName) |
| 64 | xmlWriter.newline() |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 65 | font = self[fontName] |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 66 | font.toXML(xmlWriter, progress) |
| 67 | xmlWriter.endtag("CFFFont") |
| 68 | xmlWriter.newline() |
| 69 | xmlWriter.newline() |
| 70 | xmlWriter.begintag("GlobalSubrs") |
| 71 | xmlWriter.newline() |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 72 | self.GlobalSubrs.toXML(xmlWriter, progress) |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 73 | xmlWriter.endtag("GlobalSubrs") |
| 74 | xmlWriter.newline() |
| 75 | xmlWriter.newline() |
| 76 | |
| 77 | def fromXML(self, (name, attrs, content)): |
| 78 | xxx |
| 79 | |
| 80 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 81 | class Index: |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 82 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 83 | """This class represents what the CFF spec calls an INDEX.""" |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 84 | |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 85 | def __init__(self, file, name=None): |
| 86 | if name is None: |
| 87 | name = self.__class__.__name__ |
| 88 | if DEBUG: |
| 89 | print "loading %s at %s" % (name, file.tell()) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 90 | self.file = file |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 91 | count = readCard16(file) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 92 | self.count = count |
| 93 | self.items = [None] * count |
| 94 | if count == 0: |
| 95 | self.offsets = [] |
| 96 | return |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 97 | offSize = readCard8(file) |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 98 | if DEBUG: |
| 99 | print "index count: %s offSize: %s" % (count, offSize) |
| 100 | assert offSize <= 4, "offSize too large: %s" % offSize |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 101 | self.offsets = offsets = [] |
| 102 | pad = '\0' * (4 - offSize) |
| 103 | for index in range(count+1): |
| 104 | chunk = file.read(offSize) |
| 105 | chunk = pad + chunk |
| 106 | offset, = struct.unpack(">L", chunk) |
| 107 | offsets.append(int(offset)) |
| 108 | self.offsetBase = file.tell() - 1 |
| 109 | file.seek(self.offsetBase + offsets[-1]) # pretend we've read the whole lot |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 110 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 111 | def __len__(self): |
| 112 | return self.count |
jvr | a2a75b3 | 2002-05-13 11:25:17 +0000 | [diff] [blame] | 113 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 114 | def __getitem__(self, index): |
| 115 | item = self.items[index] |
| 116 | if item is not None: |
| 117 | return item |
| 118 | offset = self.offsets[index] + self.offsetBase |
| 119 | size = self.offsets[index+1] - self.offsets[index] |
| 120 | file = self.file |
| 121 | file.seek(offset) |
| 122 | data = file.read(size) |
| 123 | assert len(data) == size |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 124 | item = self.produceItem(index, data, file, offset, size) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 125 | self.items[index] = item |
| 126 | return item |
| 127 | |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 128 | def produceItem(self, index, data, file, offset, size): |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 129 | return data |
| 130 | |
| 131 | |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 132 | class CharStringIndex(Index): |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 133 | |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 134 | def __init__(self, file, globalSubrs=None, private=None, fdSelect=None, fdArray=None, |
| 135 | name=None): |
| 136 | Index.__init__(self, file, name) |
| 137 | self.globalSubrs = globalSubrs |
| 138 | self.private = private |
| 139 | self.fdSelect = fdSelect |
| 140 | self.fdArray = fdArray |
| 141 | |
| 142 | def produceItem(self, index, data, file, offset, size): |
| 143 | if self.private is not None: |
| 144 | private = self.private |
| 145 | elif self.fdArray is not None: |
| 146 | private = self.fdArray[self.fdSelect[index]].Private |
| 147 | else: |
| 148 | private = None |
| 149 | if hasattr(private, "Subrs"): |
| 150 | subrs = private.Subrs |
| 151 | else: |
| 152 | subrs = [] |
| 153 | return psCharStrings.T2CharString(data, subrs=subrs, globalSubrs=self.globalSubrs) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 154 | |
| 155 | def toXML(self, xmlWriter, progress): |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 156 | fdSelect = self.fdSelect |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 157 | for i in range(len(self)): |
| 158 | xmlWriter.begintag("CharString", index=i) |
| 159 | xmlWriter.newline() |
| 160 | self[i].toXML(xmlWriter) |
| 161 | xmlWriter.endtag("CharString") |
| 162 | xmlWriter.newline() |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 163 | |
| 164 | def getItemAndSelector(self, index): |
| 165 | fdSelect = self.fdSelect |
| 166 | if fdSelect is None: |
| 167 | sel = None |
| 168 | else: |
| 169 | sel = fdSelect[index] |
| 170 | return self[index], sel |
| 171 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 172 | |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 173 | class TopDictIndex(Index): |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 174 | |
| 175 | def produceItem(self, index, data, file, offset, size): |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 176 | top = TopDict(self.strings, file, offset, self.GlobalSubrs) |
| 177 | top.decompile(data) |
| 178 | return top |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 179 | |
| 180 | def toXML(self, xmlWriter, progress): |
| 181 | for i in range(len(self)): |
| 182 | xmlWriter.begintag("FontDict", index=i) |
| 183 | xmlWriter.newline() |
| 184 | self[i].toXML(xmlWriter, progress) |
| 185 | xmlWriter.endtag("FontDict") |
| 186 | xmlWriter.newline() |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 187 | |
| 188 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 189 | class CharStrings: |
| 190 | |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 191 | def __init__(self, file, charset, globalSubrs, private, fdSelect, fdArray): |
| 192 | self.charStringsIndex = CharStringIndex(file, globalSubrs, private, fdSelect, fdArray) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 193 | self.nameToIndex = nameToIndex = {} |
| 194 | for i in range(len(charset)): |
| 195 | nameToIndex[charset[i]] = i |
| 196 | |
| 197 | def keys(self): |
| 198 | return self.nameToIndex.keys() |
| 199 | |
jvr | 016ca76 | 2002-05-16 18:38:03 +0000 | [diff] [blame] | 200 | def values(self): |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 201 | return self.charStringsIndex |
jvr | 016ca76 | 2002-05-16 18:38:03 +0000 | [diff] [blame] | 202 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 203 | def has_key(self, name): |
| 204 | return self.nameToIndex.has_key(name) |
| 205 | |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 206 | def __len__(self): |
| 207 | return len(self.charStringsIndex) |
| 208 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 209 | def __getitem__(self, name): |
| 210 | index = self.nameToIndex[name] |
| 211 | return self.charStringsIndex[index] |
| 212 | |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 213 | def getItemAndSelector(self, name): |
| 214 | index = self.nameToIndex[name] |
| 215 | return self.charStringsIndex.getItemAndSelector(index) |
| 216 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 217 | def toXML(self, xmlWriter, progress): |
| 218 | names = self.keys() |
| 219 | names.sort() |
| 220 | for name in names: |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 221 | charStr, fdSelect = self.getItemAndSelector(name) |
| 222 | if fdSelect is None: |
| 223 | xmlWriter.begintag("CharString", name=name) |
| 224 | else: |
| 225 | xmlWriter.begintag("CharString", |
| 226 | [('name', name), ('fdSelect', fdSelect)]) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 227 | xmlWriter.newline() |
| 228 | self[name].toXML(xmlWriter) |
| 229 | xmlWriter.endtag("CharString") |
| 230 | xmlWriter.newline() |
| 231 | |
| 232 | |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 233 | def readCard8(file): |
| 234 | return ord(file.read(1)) |
| 235 | |
| 236 | def readCard16(file): |
| 237 | value, = struct.unpack(">H", file.read(2)) |
| 238 | return value |
| 239 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 240 | def buildOperatorDict(table): |
| 241 | d = {} |
| 242 | for op, name, arg, default, conv in table: |
| 243 | d[op] = (name, arg) |
| 244 | return d |
| 245 | |
| 246 | def buildOrder(table): |
| 247 | l = [] |
| 248 | for op, name, arg, default, conv in table: |
| 249 | l.append(name) |
| 250 | return l |
| 251 | |
| 252 | def buildDefaults(table): |
| 253 | d = {} |
| 254 | for op, name, arg, default, conv in table: |
| 255 | if default is not None: |
| 256 | d[name] = default |
| 257 | return d |
| 258 | |
| 259 | def buildConverters(table): |
| 260 | d = {} |
| 261 | for op, name, arg, default, conv in table: |
| 262 | d[name] = conv |
| 263 | return d |
| 264 | |
| 265 | |
jvr | 7ce02ea | 2002-05-17 20:04:05 +0000 | [diff] [blame^] | 266 | class BaseConverter: |
| 267 | def read(self, parent, value): |
| 268 | return value |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 269 | def xmlWrite(self, xmlWriter, name, value): |
| 270 | xmlWriter.begintag(name) |
| 271 | xmlWriter.newline() |
| 272 | value.toXML(xmlWriter, None) |
| 273 | xmlWriter.endtag(name) |
| 274 | xmlWriter.newline() |
| 275 | |
jvr | 7ce02ea | 2002-05-17 20:04:05 +0000 | [diff] [blame^] | 276 | class PrivateDictConverter(BaseConverter): |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 277 | def read(self, parent, value): |
| 278 | size, offset = value |
| 279 | file = parent.file |
| 280 | pr = PrivateDict(parent.strings, file, offset) |
| 281 | file.seek(offset) |
| 282 | data = file.read(size) |
| 283 | len(data) == size |
| 284 | pr.decompile(data) |
| 285 | return pr |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 286 | |
jvr | 7ce02ea | 2002-05-17 20:04:05 +0000 | [diff] [blame^] | 287 | class SubrsConverter(BaseConverter): |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 288 | def read(self, parent, value): |
| 289 | file = parent.file |
| 290 | file.seek(parent.offset + value) # Offset(self) |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 291 | return CharStringIndex(file, name="SubrsIndex") |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 292 | |
jvr | 7ce02ea | 2002-05-17 20:04:05 +0000 | [diff] [blame^] | 293 | class CharStringsConverter(BaseConverter): |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 294 | def read(self, parent, value): |
| 295 | file = parent.file |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 296 | charset = parent.charset |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 297 | globalSubrs = parent.GlobalSubrs |
| 298 | if hasattr(parent, "ROS"): |
| 299 | fdSelect, fdArray = parent.FDSelect, parent.FDArray |
| 300 | private = None |
| 301 | else: |
| 302 | fdSelect, fdArray = None, None |
| 303 | private = parent.Private |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 304 | file.seek(value) # Offset(0) |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 305 | return CharStrings(file, charset, globalSubrs, private, fdSelect, fdArray) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 306 | |
| 307 | class CharsetConverter: |
| 308 | def read(self, parent, value): |
| 309 | isCID = hasattr(parent, "ROS") |
| 310 | if value > 2: |
| 311 | numGlyphs = parent.numGlyphs |
| 312 | file = parent.file |
| 313 | file.seek(value) |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 314 | format = readCard8(file) |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 315 | if format == 0: |
jvr | 1890b95 | 2002-05-15 07:41:30 +0000 | [diff] [blame] | 316 | raise NotImplementedError |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 317 | elif format == 1 or format == 2: |
| 318 | charset = parseCharset(numGlyphs, file, parent.strings, isCID, format) |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 319 | elif format == 3: |
jvr | 1890b95 | 2002-05-15 07:41:30 +0000 | [diff] [blame] | 320 | raise NotImplementedError |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 321 | else: |
jvr | 1890b95 | 2002-05-15 07:41:30 +0000 | [diff] [blame] | 322 | raise NotImplementedError |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 323 | assert len(charset) == numGlyphs |
jvr | 1890b95 | 2002-05-15 07:41:30 +0000 | [diff] [blame] | 324 | else: |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 325 | if isCID or not hasattr(parent, "CharStrings"): |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 326 | assert value == 0 |
| 327 | charset = None |
| 328 | elif value == 0: |
| 329 | charset = ISOAdobe |
| 330 | elif value == 1: |
| 331 | charset = Expert |
| 332 | elif value == 2: |
| 333 | charset = ExpertSubset |
jvr | 1890b95 | 2002-05-15 07:41:30 +0000 | [diff] [blame] | 334 | # self.charset: |
| 335 | # 0: ISOAdobe (or CID font!) |
| 336 | # 1: Expert |
| 337 | # 2: ExpertSubset |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 338 | charset = None # |
| 339 | return charset |
| 340 | def xmlWrite(self, xmlWriter, name, value): |
| 341 | # XXX GlyphOrder needs to be stored *somewhere*, but not here... |
| 342 | xmlWriter.simpletag("charset", value=value) |
| 343 | xmlWriter.newline() |
| 344 | |
| 345 | |
| 346 | def parseCharset(numGlyphs, file, strings, isCID, format): |
| 347 | charset = ['.notdef'] |
| 348 | count = 1 |
| 349 | if format == 1: |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 350 | nLeftFunc = readCard8 |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 351 | else: |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 352 | nLeftFunc = readCard16 |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 353 | while count < numGlyphs: |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 354 | first = readCard16(file) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 355 | nLeft = nLeftFunc(file) |
| 356 | if isCID: |
| 357 | for CID in range(first, first+nLeft+1): |
| 358 | charset.append(CID) |
jvr | 1890b95 | 2002-05-15 07:41:30 +0000 | [diff] [blame] | 359 | else: |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 360 | for SID in range(first, first+nLeft+1): |
| 361 | charset.append(strings[SID]) |
| 362 | count = count + nLeft + 1 |
| 363 | return charset |
| 364 | |
| 365 | |
jvr | 7ce02ea | 2002-05-17 20:04:05 +0000 | [diff] [blame^] | 366 | class FDArrayConverter(BaseConverter): |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 367 | def read(self, parent, value): |
| 368 | file = parent.file |
| 369 | file.seek(value) |
| 370 | fdArray = TopDictIndex(file) |
| 371 | fdArray.strings = parent.strings |
| 372 | fdArray.GlobalSubrs = parent.GlobalSubrs |
| 373 | return fdArray |
| 374 | |
| 375 | |
| 376 | class FDSelectConverter: |
| 377 | def read(self, parent, value): |
| 378 | file = parent.file |
| 379 | file.seek(value) |
| 380 | format = readCard8(file) |
| 381 | numGlyphs = parent.numGlyphs |
| 382 | if format == 0: |
| 383 | from array import array |
| 384 | fdSelect = array("B", file.read(numGlyphs)).tolist() |
| 385 | elif format == 3: |
| 386 | fdSelect = [None] * numGlyphs |
| 387 | nRanges = readCard16(file) |
| 388 | prev = None |
| 389 | for i in range(nRanges): |
| 390 | first = readCard16(file) |
| 391 | if prev is not None: |
| 392 | for glyphID in range(prev, first): |
| 393 | fdSelect[glyphID] = fd |
| 394 | prev = first |
| 395 | fd = readCard8(file) |
| 396 | if prev is not None: |
| 397 | first = readCard16(file) |
| 398 | for glyphID in range(prev, first): |
| 399 | fdSelect[glyphID] = fd |
| 400 | else: |
| 401 | assert 0, "unsupported FDSelect format: %s" % format |
| 402 | return fdSelect |
| 403 | def xmlWrite(self, xmlWriter, name, value): |
| 404 | pass |
| 405 | |
| 406 | |
jvr | 7ce02ea | 2002-05-17 20:04:05 +0000 | [diff] [blame^] | 407 | class ROSConverter(BaseConverter): |
jvr | 155aa75 | 2002-05-17 19:58:49 +0000 | [diff] [blame] | 408 | def xmlWrite(self, xmlWriter, name, value): |
| 409 | registry, order, supplement = value |
| 410 | xmlWriter.simpletag(name, [('registry', registry), ('order', order), |
| 411 | ('supplement', supplement)]) |
| 412 | |
| 413 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 414 | topDictOperators = [ |
| 415 | # opcode name argument type default converter |
jvr | 155aa75 | 2002-05-17 19:58:49 +0000 | [diff] [blame] | 416 | ((12, 30), 'ROS', ('SID','SID','number'), None, ROSConverter()), |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 417 | (0, 'version', 'SID', None, None), |
| 418 | (1, 'Notice', 'SID', None, None), |
| 419 | ((12, 0), 'Copyright', 'SID', None, None), |
| 420 | (2, 'FullName', 'SID', None, None), |
jvr | 155aa75 | 2002-05-17 19:58:49 +0000 | [diff] [blame] | 421 | ((12, 38), 'FontName', 'SID', None, None), |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 422 | (3, 'FamilyName', 'SID', None, None), |
| 423 | (4, 'Weight', 'SID', None, None), |
| 424 | ((12, 1), 'isFixedPitch', 'number', 0, None), |
| 425 | ((12, 2), 'ItalicAngle', 'number', 0, None), |
| 426 | ((12, 3), 'UnderlinePosition', 'number', None, None), |
| 427 | ((12, 4), 'UnderlineThickness', 'number', 50, None), |
| 428 | ((12, 5), 'PaintType', 'number', 0, None), |
| 429 | ((12, 6), 'CharstringType', 'number', 2, None), |
| 430 | ((12, 7), 'FontMatrix', 'array', [0.001,0,0,0.001,0,0], None), |
| 431 | (13, 'UniqueID', 'number', None, None), |
| 432 | (5, 'FontBBox', 'array', [0,0,0,0], None), |
| 433 | ((12, 8), 'StrokeWidth', 'number', 0, None), |
| 434 | (14, 'XUID', 'array', None, None), |
| 435 | (15, 'charset', 'number', 0, CharsetConverter()), |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 436 | ((12, 20), 'SyntheticBase', 'number', None, None), |
| 437 | ((12, 21), 'PostScript', 'SID', None, None), |
| 438 | ((12, 22), 'BaseFontName', 'SID', None, None), |
| 439 | ((12, 23), 'BaseFontBlend', 'delta', None, None), |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 440 | ((12, 31), 'CIDFontVersion', 'number', 0, None), |
| 441 | ((12, 32), 'CIDFontRevision', 'number', 0, None), |
| 442 | ((12, 33), 'CIDFontType', 'number', 0, None), |
| 443 | ((12, 34), 'CIDCount', 'number', 8720, None), |
| 444 | ((12, 35), 'UIDBase', 'number', None, None), |
jvr | 155aa75 | 2002-05-17 19:58:49 +0000 | [diff] [blame] | 445 | (16, 'Encoding', 'number', 0, None), # XXX |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 446 | ((12, 36), 'FDArray', 'number', None, FDArrayConverter()), |
| 447 | ((12, 37), 'FDSelect', 'number', None, FDSelectConverter()), |
jvr | 155aa75 | 2002-05-17 19:58:49 +0000 | [diff] [blame] | 448 | (18, 'Private', ('number','number'), None, PrivateDictConverter()), |
| 449 | (17, 'CharStrings', 'number', None, CharStringsConverter()), |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 450 | ] |
| 451 | |
| 452 | privateDictOperators = [ |
| 453 | # opcode name argument type default converter |
| 454 | (6, 'BlueValues', 'delta', None, None), |
| 455 | (7, 'OtherBlues', 'delta', None, None), |
| 456 | (8, 'FamilyBlues', 'delta', None, None), |
| 457 | (9, 'FamilyOtherBlues', 'delta', None, None), |
| 458 | ((12, 9), 'BlueScale', 'number', 0.039625, None), |
| 459 | ((12, 10), 'BlueShift', 'number', 7, None), |
| 460 | ((12, 11), 'BlueFuzz', 'number', 1, None), |
| 461 | (10, 'StdHW', 'number', None, None), |
| 462 | (11, 'StdVW', 'number', None, None), |
| 463 | ((12, 12), 'StemSnapH', 'delta', None, None), |
| 464 | ((12, 13), 'StemSnapV', 'delta', None, None), |
| 465 | ((12, 14), 'ForceBold', 'number', 0, None), |
| 466 | ((12, 17), 'LanguageGroup', 'number', 0, None), |
| 467 | ((12, 18), 'ExpansionFactor', 'number', 0.06, None), |
| 468 | ((12, 19), 'initialRandomSeed', 'number', 0, None), |
| 469 | (20, 'defaultWidthX', 'number', 0, None), |
| 470 | (21, 'nominalWidthX', 'number', 0, None), |
| 471 | (19, 'Subrs', 'number', None, SubrsConverter()), |
| 472 | ] |
| 473 | |
| 474 | |
| 475 | class TopDictDecompiler(psCharStrings.DictDecompiler): |
| 476 | operators = buildOperatorDict(topDictOperators) |
| 477 | |
| 478 | |
| 479 | class PrivateDictDecompiler(psCharStrings.DictDecompiler): |
| 480 | operators = buildOperatorDict(privateDictOperators) |
| 481 | |
| 482 | |
| 483 | |
| 484 | class BaseDict: |
| 485 | |
| 486 | def __init__(self, strings, file, offset): |
| 487 | self.rawDict = {} |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 488 | if DEBUG: |
| 489 | print "loading %s at %s" % (self, offset) |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 490 | self.file = file |
| 491 | self.offset = offset |
| 492 | self.strings = strings |
jvr | 155aa75 | 2002-05-17 19:58:49 +0000 | [diff] [blame] | 493 | self.skipNames = [] |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 494 | |
| 495 | def decompile(self, data): |
| 496 | dec = self.decompiler(self.strings) |
| 497 | dec.decompile(data) |
| 498 | self.rawDict = dec.getDict() |
| 499 | self.postDecompile() |
| 500 | |
| 501 | def postDecompile(self): |
| 502 | pass |
| 503 | |
| 504 | def __getattr__(self, name): |
| 505 | value = self.rawDict.get(name) |
| 506 | if value is None: |
| 507 | value = self.defaults.get(name) |
| 508 | if value is None: |
| 509 | raise AttributeError, name |
| 510 | conv = self.converters[name] |
| 511 | if conv is not None: |
| 512 | value = conv.read(self, value) |
| 513 | setattr(self, name, value) |
| 514 | return value |
| 515 | |
| 516 | def toXML(self, xmlWriter, progress): |
| 517 | for name in self.order: |
jvr | 155aa75 | 2002-05-17 19:58:49 +0000 | [diff] [blame] | 518 | if name in self.skipNames: |
| 519 | continue |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 520 | value = getattr(self, name, None) |
| 521 | if value is None: |
| 522 | continue |
| 523 | conv = self.converters.get(name) |
| 524 | if conv is not None: |
| 525 | conv.xmlWrite(xmlWriter, name, value) |
| 526 | else: |
| 527 | if isinstance(value, types.ListType): |
| 528 | value = " ".join(map(str, value)) |
| 529 | xmlWriter.simpletag(name, value=value) |
| 530 | xmlWriter.newline() |
| 531 | |
| 532 | |
| 533 | class TopDict(BaseDict): |
| 534 | |
| 535 | defaults = buildDefaults(topDictOperators) |
| 536 | converters = buildConverters(topDictOperators) |
| 537 | order = buildOrder(topDictOperators) |
| 538 | decompiler = TopDictDecompiler |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 539 | |
jvr | 016ca76 | 2002-05-16 18:38:03 +0000 | [diff] [blame] | 540 | def __init__(self, strings, file, offset, GlobalSubrs): |
| 541 | BaseDict.__init__(self, strings, file, offset) |
| 542 | self.GlobalSubrs = GlobalSubrs |
| 543 | |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 544 | def getGlyphOrder(self): |
| 545 | return self.charset |
| 546 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 547 | def postDecompile(self): |
| 548 | offset = self.rawDict.get("CharStrings") |
| 549 | if offset is None: |
| 550 | return |
| 551 | # get the number of glyphs beforehand. |
| 552 | self.file.seek(offset) |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 553 | self.numGlyphs = readCard16(self.file) |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 554 | |
jvr | 016ca76 | 2002-05-16 18:38:03 +0000 | [diff] [blame] | 555 | def toXML(self, xmlWriter, progress): |
jvr | 155aa75 | 2002-05-17 19:58:49 +0000 | [diff] [blame] | 556 | if hasattr(self, "CharStrings"): |
| 557 | self.decompileAllCharStrings() |
| 558 | if not hasattr(self, "ROS") or not hasattr(self, "CharStrings"): |
| 559 | # these values have default values, but I only want them to show up |
| 560 | # in CID fonts. |
| 561 | self.skipNames = ['CIDFontVersion', 'CIDFontRevision', 'CIDFontType', |
| 562 | 'CIDCount'] |
jvr | 016ca76 | 2002-05-16 18:38:03 +0000 | [diff] [blame] | 563 | BaseDict.toXML(self, xmlWriter, progress) |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 564 | |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 565 | def decompileAllCharStrings(self): |
jvr | a2ad544 | 2002-05-17 18:36:07 +0000 | [diff] [blame] | 566 | for charString in self.CharStrings.values(): |
| 567 | charString.decompile() |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 568 | |
| 569 | |
jvr | 4756b3a | 2002-05-16 18:17:32 +0000 | [diff] [blame] | 570 | class PrivateDict(BaseDict): |
| 571 | defaults = buildDefaults(privateDictOperators) |
| 572 | converters = buildConverters(privateDictOperators) |
| 573 | order = buildOrder(privateDictOperators) |
| 574 | decompiler = PrivateDictDecompiler |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 575 | |
| 576 | |
jvr | e327558 | 2002-05-14 12:22:03 +0000 | [diff] [blame] | 577 | class IndexedStrings: |
| 578 | |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 579 | """SID -> string mapping.""" |
| 580 | |
| 581 | def __init__(self, file=None): |
| 582 | if file is None: |
jvr | e327558 | 2002-05-14 12:22:03 +0000 | [diff] [blame] | 583 | strings = [] |
jvr | 767102e | 2002-05-17 07:06:32 +0000 | [diff] [blame] | 584 | else: |
| 585 | strings = list(Index(file, "IndexedStrings")) |
jvr | e327558 | 2002-05-14 12:22:03 +0000 | [diff] [blame] | 586 | self.strings = strings |
| 587 | |
| 588 | def __getitem__(self, SID): |
| 589 | if SID < cffStandardStringCount: |
| 590 | return cffStandardStrings[SID] |
| 591 | else: |
| 592 | return self.strings[SID - cffStandardStringCount] |
| 593 | |
| 594 | def getSID(self, s): |
| 595 | if not hasattr(self, "stringMapping"): |
| 596 | self.buildStringMapping() |
| 597 | if cffStandardStringMapping.has_key(s): |
| 598 | SID = cffStandardStringMapping[s] |
| 599 | if self.stringMapping.has_key(s): |
| 600 | SID = self.stringMapping[s] |
| 601 | else: |
| 602 | SID = len(self.strings) + cffStandardStringCount |
| 603 | self.strings.append(s) |
| 604 | self.stringMapping[s] = SID |
| 605 | return SID |
| 606 | |
| 607 | def getStrings(self): |
| 608 | return self.strings |
| 609 | |
| 610 | def buildStringMapping(self): |
| 611 | self.stringMapping = {} |
| 612 | for index in range(len(self.strings)): |
| 613 | self.stringMapping[self.strings[index]] = index + cffStandardStringCount |
| 614 | |
| 615 | |
Just | 7842e56 | 1999-12-16 21:34:53 +0000 | [diff] [blame] | 616 | # The 391 Standard Strings as used in the CFF format. |
| 617 | # from Adobe Technical None #5176, version 1.0, 18 March 1998 |
| 618 | |
| 619 | cffStandardStrings = ['.notdef', 'space', 'exclam', 'quotedbl', 'numbersign', |
| 620 | 'dollar', 'percent', 'ampersand', 'quoteright', 'parenleft', 'parenright', |
| 621 | 'asterisk', 'plus', 'comma', 'hyphen', 'period', 'slash', 'zero', 'one', |
| 622 | 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'colon', |
| 623 | 'semicolon', 'less', 'equal', 'greater', 'question', 'at', 'A', 'B', 'C', |
| 624 | 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', |
| 625 | 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'bracketleft', 'backslash', |
| 626 | 'bracketright', 'asciicircum', 'underscore', 'quoteleft', 'a', 'b', 'c', |
| 627 | 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', |
| 628 | 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'braceleft', 'bar', 'braceright', |
| 629 | 'asciitilde', 'exclamdown', 'cent', 'sterling', 'fraction', 'yen', 'florin', |
| 630 | 'section', 'currency', 'quotesingle', 'quotedblleft', 'guillemotleft', |
| 631 | 'guilsinglleft', 'guilsinglright', 'fi', 'fl', 'endash', 'dagger', |
| 632 | 'daggerdbl', 'periodcentered', 'paragraph', 'bullet', 'quotesinglbase', |
| 633 | 'quotedblbase', 'quotedblright', 'guillemotright', 'ellipsis', 'perthousand', |
| 634 | 'questiondown', 'grave', 'acute', 'circumflex', 'tilde', 'macron', 'breve', |
| 635 | 'dotaccent', 'dieresis', 'ring', 'cedilla', 'hungarumlaut', 'ogonek', 'caron', |
| 636 | 'emdash', 'AE', 'ordfeminine', 'Lslash', 'Oslash', 'OE', 'ordmasculine', 'ae', |
| 637 | 'dotlessi', 'lslash', 'oslash', 'oe', 'germandbls', 'onesuperior', |
| 638 | 'logicalnot', 'mu', 'trademark', 'Eth', 'onehalf', 'plusminus', 'Thorn', |
| 639 | 'onequarter', 'divide', 'brokenbar', 'degree', 'thorn', 'threequarters', |
| 640 | 'twosuperior', 'registered', 'minus', 'eth', 'multiply', 'threesuperior', |
| 641 | 'copyright', 'Aacute', 'Acircumflex', 'Adieresis', 'Agrave', 'Aring', |
| 642 | 'Atilde', 'Ccedilla', 'Eacute', 'Ecircumflex', 'Edieresis', 'Egrave', |
| 643 | 'Iacute', 'Icircumflex', 'Idieresis', 'Igrave', 'Ntilde', 'Oacute', |
| 644 | 'Ocircumflex', 'Odieresis', 'Ograve', 'Otilde', 'Scaron', 'Uacute', |
| 645 | 'Ucircumflex', 'Udieresis', 'Ugrave', 'Yacute', 'Ydieresis', 'Zcaron', |
| 646 | 'aacute', 'acircumflex', 'adieresis', 'agrave', 'aring', 'atilde', 'ccedilla', |
| 647 | 'eacute', 'ecircumflex', 'edieresis', 'egrave', 'iacute', 'icircumflex', |
| 648 | 'idieresis', 'igrave', 'ntilde', 'oacute', 'ocircumflex', 'odieresis', |
| 649 | 'ograve', 'otilde', 'scaron', 'uacute', 'ucircumflex', 'udieresis', 'ugrave', |
| 650 | 'yacute', 'ydieresis', 'zcaron', 'exclamsmall', 'Hungarumlautsmall', |
| 651 | 'dollaroldstyle', 'dollarsuperior', 'ampersandsmall', 'Acutesmall', |
| 652 | 'parenleftsuperior', 'parenrightsuperior', 'twodotenleader', 'onedotenleader', |
| 653 | 'zerooldstyle', 'oneoldstyle', 'twooldstyle', 'threeoldstyle', 'fouroldstyle', |
| 654 | 'fiveoldstyle', 'sixoldstyle', 'sevenoldstyle', 'eightoldstyle', |
| 655 | 'nineoldstyle', 'commasuperior', 'threequartersemdash', 'periodsuperior', |
| 656 | 'questionsmall', 'asuperior', 'bsuperior', 'centsuperior', 'dsuperior', |
| 657 | 'esuperior', 'isuperior', 'lsuperior', 'msuperior', 'nsuperior', 'osuperior', |
| 658 | 'rsuperior', 'ssuperior', 'tsuperior', 'ff', 'ffi', 'ffl', 'parenleftinferior', |
| 659 | 'parenrightinferior', 'Circumflexsmall', 'hyphensuperior', 'Gravesmall', |
| 660 | 'Asmall', 'Bsmall', 'Csmall', 'Dsmall', 'Esmall', 'Fsmall', 'Gsmall', 'Hsmall', |
| 661 | 'Ismall', 'Jsmall', 'Ksmall', 'Lsmall', 'Msmall', 'Nsmall', 'Osmall', 'Psmall', |
| 662 | 'Qsmall', 'Rsmall', 'Ssmall', 'Tsmall', 'Usmall', 'Vsmall', 'Wsmall', 'Xsmall', |
| 663 | 'Ysmall', 'Zsmall', 'colonmonetary', 'onefitted', 'rupiah', 'Tildesmall', |
| 664 | 'exclamdownsmall', 'centoldstyle', 'Lslashsmall', 'Scaronsmall', 'Zcaronsmall', |
| 665 | 'Dieresissmall', 'Brevesmall', 'Caronsmall', 'Dotaccentsmall', 'Macronsmall', |
| 666 | 'figuredash', 'hypheninferior', 'Ogoneksmall', 'Ringsmall', 'Cedillasmall', |
| 667 | 'questiondownsmall', 'oneeighth', 'threeeighths', 'fiveeighths', 'seveneighths', |
| 668 | 'onethird', 'twothirds', 'zerosuperior', 'foursuperior', 'fivesuperior', |
| 669 | 'sixsuperior', 'sevensuperior', 'eightsuperior', 'ninesuperior', 'zeroinferior', |
| 670 | 'oneinferior', 'twoinferior', 'threeinferior', 'fourinferior', 'fiveinferior', |
| 671 | 'sixinferior', 'seveninferior', 'eightinferior', 'nineinferior', 'centinferior', |
| 672 | 'dollarinferior', 'periodinferior', 'commainferior', 'Agravesmall', |
| 673 | 'Aacutesmall', 'Acircumflexsmall', 'Atildesmall', 'Adieresissmall', 'Aringsmall', |
| 674 | 'AEsmall', 'Ccedillasmall', 'Egravesmall', 'Eacutesmall', 'Ecircumflexsmall', |
| 675 | 'Edieresissmall', 'Igravesmall', 'Iacutesmall', 'Icircumflexsmall', |
| 676 | 'Idieresissmall', 'Ethsmall', 'Ntildesmall', 'Ogravesmall', 'Oacutesmall', |
| 677 | 'Ocircumflexsmall', 'Otildesmall', 'Odieresissmall', 'OEsmall', 'Oslashsmall', |
| 678 | 'Ugravesmall', 'Uacutesmall', 'Ucircumflexsmall', 'Udieresissmall', |
| 679 | 'Yacutesmall', 'Thornsmall', 'Ydieresissmall', '001.000', '001.001', '001.002', |
| 680 | '001.003', 'Black', 'Bold', 'Book', 'Light', 'Medium', 'Regular', 'Roman', |
| 681 | 'Semibold' |
| 682 | ] |
| 683 | |
| 684 | cffStandardStringCount = 391 |
| 685 | assert len(cffStandardStrings) == cffStandardStringCount |
| 686 | # build reverse mapping |
| 687 | cffStandardStringMapping = {} |
| 688 | for _i in range(cffStandardStringCount): |
| 689 | cffStandardStringMapping[cffStandardStrings[_i]] = _i |
| 690 | |
| 691 | |