46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
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from __future__ import print_function, division, absolute_import
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from __future__ import unicode_literals
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from fontTools.feaLib.error import FeatureLibError
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from fontTools.feaLib.parser import Parser
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from fontTools.ttLib.tables import otTables
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def addOpenTypeFeatures(featurefile_path, font):
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builder = Builder(featurefile_path, font)
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builder.build()
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class Builder(object):
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def __init__(self, featurefile_path, font):
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self.featurefile_path = featurefile_path
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self.font = font
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self.language_systems_ = []
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def build(self):
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self.gpos = self.font['GPOS'] = self.makeTable('GPOS')
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self.gsub = self.font['GSUB'] = self.makeTable('GSUB')
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parsetree = Parser(self.featurefile_path).parse()
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parsetree.build(self)
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def makeTable(self, tag):
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table = getattr(otTables, tag, None)()
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table.Version = 1.0
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table.ScriptList = otTables.ScriptList()
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table.ScriptList.ScriptCount = 0
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table.ScriptList.ScriptRecord = []
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table.FeatureList = otTables.FeatureList()
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table.FeatureList.FeatureCount = 0
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table.FeatureList.FeatureRecord = []
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table.LookupList = otTables.LookupList()
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table.LookupList.LookupCount = 0
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table.LookupList.Lookup = []
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return table
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def add_language_system(self, location, script, language):
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if script == "DFLT" and language == "dflt" and self.language_systems_:
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# OpenType Feature File Specification, section 4.b.i
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raise FeatureLibError(
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'If "languagesystem DFLT dflt" is present, it must be '
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'the first of the languagesystem statements', location)
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self.language_systems_.append((script, language))
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