284 lines
7.2 KiB
Python
284 lines
7.2 KiB
Python
|
import otCommon
|
||
|
|
|
||
|
|
|
||
|
|
class table_G_S_U_B_(otCommon.base_GPOS_GSUB):
|
||
|
|
|
||
|
|
def getLookupTypeClass(self, lookupType):
|
||
|
|
return lookupTypeClasses[lookupType]
|
||
|
|
|
||
|
|
|
||
|
|
class SingleSubst:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
self.format = reader.readUShort()
|
||
|
|
if self.format == 1:
|
||
|
|
self.decompileFormat1(reader, otFont)
|
||
|
|
elif self.format == 2:
|
||
|
|
self.decompileFormat2(reader, otFont)
|
||
|
|
else:
|
||
|
|
from fontTools import ttLib
|
||
|
|
raise ttLib.TTLibError, "unknown SingleSub format: %d" % self.format
|
||
|
|
|
||
|
|
def decompileFormat1(self, reader, otFont):
|
||
|
|
coverage = reader.readTable(otCommon.CoverageTable, otFont)
|
||
|
|
glyphIDs = coverage.getGlyphIDs()
|
||
|
|
glyphNames = coverage.getGlyphNames()
|
||
|
|
self.substitutions = substitutions = {}
|
||
|
|
deltaGlyphID = reader.readShort()
|
||
|
|
for i in range(len(glyphIDs)):
|
||
|
|
input = glyphNames[i]
|
||
|
|
output = otFont.getGlyphName(glyphIDs[i] + deltaGlyphID)
|
||
|
|
substitutions[input] = output
|
||
|
|
|
||
|
|
def decompileFormat2(self, reader, otFont):
|
||
|
|
coverage = reader.readTable(otCommon.CoverageTable, otFont)
|
||
|
|
glyphNames = coverage.getGlyphNames()
|
||
|
|
glyphCount = reader.readUShort()
|
||
|
|
self.substitutions = substitutions = {}
|
||
|
|
for i in range(glyphCount):
|
||
|
|
glyphID = reader.readUShort()
|
||
|
|
output = otFont.getGlyphName(glyphID)
|
||
|
|
input = glyphNames[i]
|
||
|
|
substitutions[input] = output
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
def toXML(self, xmlWriter, otFont):
|
||
|
|
substitutions = self.substitutions.items()
|
||
|
|
substitutions.sort()
|
||
|
|
for input, output in substitutions:
|
||
|
|
xmlWriter.simpletag("Subst", [("in", input), ("out", output)])
|
||
|
|
xmlWriter.newline()
|
||
|
|
|
||
|
|
def fromXML(self, (name, attrs, content), otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
|
||
|
|
class MultipleSubst:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
format = reader.readUShort()
|
||
|
|
if format <> 1:
|
||
|
|
from fontTools import ttLib
|
||
|
|
raise ttLib.TTLibError, "unknown MultipleSubst format: %d" % format
|
||
|
|
glyphNames = reader.readTable(otCommon.CoverageTable, otFont).getGlyphNames()
|
||
|
|
sequenceCount = reader.readUShort()
|
||
|
|
self.substitutions = substitutions = {}
|
||
|
|
for i in range(sequenceCount):
|
||
|
|
sequence = reader.readTable(Sequence, otFont)
|
||
|
|
substitutions[glyphNames[i]] = sequence.glyphs
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
def toXML(self, xmlWriter, otFont):
|
||
|
|
import string
|
||
|
|
items = self.substitutions.items()
|
||
|
|
items.sort()
|
||
|
|
for input, output in items:
|
||
|
|
xmlWriter.simpletag("Subst", [("in", input), ("out", string.join(output, ","))])
|
||
|
|
xmlWriter.newline()
|
||
|
|
|
||
|
|
|
||
|
|
class Sequence:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
self.glyphs = []
|
||
|
|
for i in range(reader.readUShort()):
|
||
|
|
self.glyphs.append(otFont.getGlyphName(reader.readUShort()))
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
|
||
|
|
class AlternateSubst:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
format = reader.readUShort()
|
||
|
|
if format <> 1:
|
||
|
|
from fontTools import ttLib
|
||
|
|
raise ttLib.TTLibError, "unknown AlternateSubst format: %d" % format
|
||
|
|
coverage = reader.readTable(otCommon.CoverageTable, otFont)
|
||
|
|
glyphNames = coverage.getGlyphNames()
|
||
|
|
alternateSetCount = reader.readUShort()
|
||
|
|
self.alternateSet = alternateSet = {}
|
||
|
|
for i in range(alternateSetCount):
|
||
|
|
set = reader.readTable(AlternateSet, otFont)
|
||
|
|
alternateSet[glyphNames[i]] = set.glyphs
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
def toXML(self, xmlWriter, otFont):
|
||
|
|
alternates = self.alternateSet.items()
|
||
|
|
alternates.sort()
|
||
|
|
for input, substList in alternates:
|
||
|
|
xmlWriter.begintag("AlternateSet", [("in", input)])
|
||
|
|
xmlWriter.newline()
|
||
|
|
for output in substList:
|
||
|
|
xmlWriter.simpletag("Subst", out=output)
|
||
|
|
xmlWriter.newline()
|
||
|
|
xmlWriter.endtag("AlternateSet")
|
||
|
|
xmlWriter.newline()
|
||
|
|
|
||
|
|
|
||
|
|
class AlternateSet:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
glyphCount = reader.readUShort()
|
||
|
|
glyphIDs = reader.readUShortArray(glyphCount)
|
||
|
|
self.glyphs = map(otFont.getGlyphName, glyphIDs)
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
|
||
|
|
class LigatureSubst:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
format = reader.readUShort()
|
||
|
|
if format <> 1:
|
||
|
|
from fontTools import ttLib
|
||
|
|
raise ttLib.TTLibError, "unknown LigatureSubst format: %d" % format
|
||
|
|
coverage = reader.readTable(otCommon.CoverageTable, otFont)
|
||
|
|
glyphNames = coverage.getGlyphNames()
|
||
|
|
ligSetCount = reader.readUShort()
|
||
|
|
self.ligatures = ligatures = []
|
||
|
|
for i in range(ligSetCount):
|
||
|
|
firstGlyph = glyphNames[i]
|
||
|
|
ligSet = reader.readTable(LigatureSet, otFont)
|
||
|
|
for ligatureGlyph, components in ligSet.ligatures:
|
||
|
|
ligatures.append(((firstGlyph,) + tuple(components)), ligatureGlyph)
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
def toXML(self, xmlWriter, otFont):
|
||
|
|
import string
|
||
|
|
for input, output in self.ligatures:
|
||
|
|
xmlWriter.simpletag("Subst", [("in", string.join(input, ",")), ("out", output)])
|
||
|
|
xmlWriter.newline()
|
||
|
|
|
||
|
|
|
||
|
|
class LigatureSet:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
ligatureCount = reader.readUShort()
|
||
|
|
self.ligatures = ligatures = []
|
||
|
|
for i in range(ligatureCount):
|
||
|
|
lig = reader.readTable(Ligature, otFont)
|
||
|
|
ligatures.append((lig.ligatureGlyph, lig.components))
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
|
||
|
|
class Ligature:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
self.ligatureGlyph = otFont.getGlyphName(reader.readUShort())
|
||
|
|
compCount = reader.readUShort()
|
||
|
|
self.components = components = []
|
||
|
|
for i in range(compCount-1):
|
||
|
|
components.append(otFont.getGlyphName(reader.readUShort()))
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
|
||
|
|
class ContextSubst:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
format = reader.readUShort()
|
||
|
|
if format == 1:
|
||
|
|
self.decompileFormat1(reader, otFont)
|
||
|
|
elif format == 2:
|
||
|
|
self.decompileFormat2(reader, otFont)
|
||
|
|
elif format == 3:
|
||
|
|
self.decompileFormat3(reader, otFont)
|
||
|
|
else:
|
||
|
|
from fontTools import ttLib
|
||
|
|
raise ttLib.TTLibError, "unknown ContextSubst format: %d" % format
|
||
|
|
|
||
|
|
def decompileFormat1(self, reader, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
def decompileFormat2(self, reader, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
def decompileFormat3(self, reader, otFont):
|
||
|
|
glyphCount = reader.readUShort()
|
||
|
|
substCount = reader.readUShort()
|
||
|
|
coverage = []
|
||
|
|
for i in range(glyphCount):
|
||
|
|
coverage.append(reader.readTable(otCommon.CoverageTable, otFont))
|
||
|
|
self.substitutions = substitutions = []
|
||
|
|
for i in range(substCount):
|
||
|
|
lookupRecord = SubstLookupRecord()
|
||
|
|
lookupRecord.decompile(reader, otFont)
|
||
|
|
substitutions.append((coverage[i].getGlyphNames(), lookupRecord))
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
def toXML(self, xmlWriter, otFont):
|
||
|
|
xmlWriter.comment("XXX")
|
||
|
|
xmlWriter.newline()
|
||
|
|
|
||
|
|
|
||
|
|
class ChainContextSubst:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
self.format = reader.readUShort()
|
||
|
|
if self.format == 1:
|
||
|
|
self.decompileFormat1(reader, otFont)
|
||
|
|
elif self.format == 2:
|
||
|
|
self.decompileFormat2(reader, otFont)
|
||
|
|
elif self.format == 3:
|
||
|
|
self.decompileFormat3(reader, otFont)
|
||
|
|
else:
|
||
|
|
from fontTools import ttLib
|
||
|
|
raise ttLib.TTLibError, "unknown ChainContextSubst format: %d" % self.format
|
||
|
|
|
||
|
|
def decompileFormat1(self, reader, otFont):
|
||
|
|
pass
|
||
|
|
|
||
|
|
def decompileFormat2(self, reader, otFont):
|
||
|
|
pass
|
||
|
|
|
||
|
|
def decompileFormat3(self, reader, otFont):
|
||
|
|
pass
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|
||
|
|
def toXML(self, xmlWriter, otFont):
|
||
|
|
xmlWriter.comment("XXX")
|
||
|
|
xmlWriter.newline()
|
||
|
|
|
||
|
|
|
||
|
|
lookupTypeClasses = {
|
||
|
|
1: SingleSubst,
|
||
|
|
2: MultipleSubst,
|
||
|
|
3: AlternateSubst,
|
||
|
|
4: LigatureSubst,
|
||
|
|
5: ContextSubst,
|
||
|
|
6: ChainContextSubst,
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#
|
||
|
|
# Shared classes
|
||
|
|
#
|
||
|
|
|
||
|
|
class SubstLookupRecord:
|
||
|
|
|
||
|
|
def decompile(self, reader, otFont):
|
||
|
|
self.sequenceIndex = reader.readUShort()
|
||
|
|
self.lookupListIndex = reader.readUShort()
|
||
|
|
|
||
|
|
def compile(self, otFont):
|
||
|
|
xxx
|
||
|
|
|