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[mtiLib] Port to otlLib.builder for supported lookups

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This commit is contained in:
Behdad Esfahbod 2016-01-13 17:54:42 +00:00
parent 5c34acb94d
commit aeb5ecbfd4
1 changed files with 26 additions and 26 deletions
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52
Lib/fontTools/mtiLib/__init__.py
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@ -10,6 +10,7 @@ from __future__ import print_function, division, absolute_import
from fontTools import ttLib
from fontTools.ttLib.tables import otTables as ot
from fontTools.ttLib.tables.otBase import ValueRecord, valueRecordFormatDict
from fontTools.otlLib import builder
from contextlib import contextmanager
class MtiLibError(Exception): pass
@ -153,39 +154,35 @@ def parseLookupFlags(lines):
filterset = int(line[1])
return flags, filterset
def parseSingleSubst(self, lines, font, _lookupMap=None):
self.mapping = {}
def parseSingleSubst(lines, font, _lookupMap=None):
mapping = {}
for line in lines:
assert len(line) == 2, line
line = makeGlyphs(line)
self.mapping[line[0]] = line[1]
mapping[line[0]] = line[1]
return builder.buildSingleSubst(mapping)
def parseMultiple(self, lines, font, _lookupMap=None):
self.mapping = {}
def parseMultiple(lines, font, _lookupMap=None):
mapping = {}
for line in lines:
line = makeGlyphs(line)
self.mapping[line[0]] = line[1:]
mapping[line[0]] = line[1:]
return builder.buildMultipleSubst(mapping)
def parseAlternate(self, lines, font, _lookupMap=None):
self.alternates = {}
def parseAlternate(lines, font, _lookupMap=None):
mapping = {}
for line in lines:
line = makeGlyphs(line)
self.alternates[line[0]] = line[1:]
mapping[line[0]] = line[1:]
return builder.buildAlternateSubst(mapping)
def parseLigature(self, lines, font, _lookupMap=None):
self.ligatures = {}
def parseLigature(lines, font, _lookupMap=None):
mapping = {}
for line in lines:
assert len(line) >= 2, line
line = makeGlyphs(line)
# The following single line can replace the rest of this function with fontTools >= 3.1
#self.ligatures[tuple(line[1:])] = line[0]
ligGlyph, firstGlyph = line[:2]
otherComponents = line[2:]
ligature = ot.Ligature()
ligature.Component = otherComponents
ligature.CompCount = len(ligature.Component) + 1
ligature.LigGlyph = ligGlyph
self.ligatures.setdefault(firstGlyph, []).append(ligature)
mapping[tuple(line[1:])] = line[0]
return builder.buildLigatureSubst(mapping)
def parseSinglePos(self, lines, font, _lookupMap=None):
values = {}
@ -764,10 +761,10 @@ def parseLookup(lines, tableTag, font, lookupMap=None):
lookup.MarkFilteringSet = filterset
lookup.LookupType, parseLookupSubTable = {
'GSUB': {
'single': (1, parseSingleSubst),
'multiple': (2, parseMultiple),
'alternate': (3, parseAlternate),
'ligature': (4, parseLigature),
'single': (0, parseSingleSubst),
'multiple': (0, parseMultiple),
'alternate': (0, parseAlternate),
'ligature': (0, parseLigature),
'context': (5, parseContextSubst),
'chained': (6, parseChainedSubst),
'reversechained':(8, parseReverseChainedSubst),
@ -790,8 +787,11 @@ def parseLookup(lines, tableTag, font, lookupMap=None):
while lines.peek():
with lines.until(('% subtable', 'subtable end')):
while lines.peek():
subtable = ot.lookupTypes[tableTag][lookup.LookupType]()
parseLookupSubTable(subtable, lines, font, lookupMap)
if lookup.LookupType is 0:
subtable = parseLookupSubTable(lines, font, lookupMap)
else:
subtable = ot.lookupTypes[tableTag][lookup.LookupType]()
parseLookupSubTable(subtable, lines, font, lookupMap)
subtables.append(subtable)
if lines.peek() and lines.peek()[0] in ('% subtable', 'subtable end'):
next(lines)