#! /usr/bin/env python
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# Sample script to convert legacy cmap subtables to format-4
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# subtables. Note that this is rarely what one needs. You
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# probably need to just drop the legacy subtables if the font
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# already has a format-4 subtable.
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#
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# Other times, you would need to convert a non-Unicode cmap
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# legacy subtable to a Unicode one. In those cases, use the
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# getEncoding() of subtable and use that encoding to map the
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# characters to Unicode... TODO: Extend this script to do that.
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from __future__ import print_function, division, absolute_import
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from fontTools.misc.py23 import *
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from fontTools.ttLib import TTFont
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from fontTools.ttLib.tables._c_m_a_p import CmapSubtable
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import sys
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if len(sys.argv) != 3:
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print("usage: cmap-format.py fontfile.ttf outfile.ttf")
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sys.exit(1)
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fontfile = sys.argv[1]
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outfile = sys.argv[2]
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font = TTFont(fontfile)
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cmap = font['cmap']
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outtables = []
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for table in cmap.tables:
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if table.format in [4, 12, 13, 14]:
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outtables.append(table)
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# Convert ot format4
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newtable = CmapSubtable.newSubtable(4)
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newtable.platformID = table.platformID
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newtable.platEncID = table.platEncID
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newtable.language = table.language
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newtable.cmap = table.cmap
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outtables.append(newtable)
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cmap.tables = outtables
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font.save(outfile)
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