5fc65d7168
* Replaced all from ...py23 import * with explicit name imports, or removed completely when possible. * Replaced tounicode() with tostr() * Changed all BytesIO ans StringIO imports to from io import ..., replaced all UnicodeIO with StringIO. * Replaced all unichr() with chr() * Misc minor tweaks and fixes
59 lines
1.1 KiB
Python
Executable File
59 lines
1.1 KiB
Python
Executable File
#! /usr/bin/env python3
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from fontTools.ttLib import TTFont
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import sys
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if len(sys.argv) < 2:
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print("usage: subset-fpgm.py fontfile.ttf func-number...")
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sys.exit(1)
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fontfile = sys.argv[1]
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func_nums = [int(x) for x in sys.argv[2:]]
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font = TTFont(fontfile)
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fpgm = font['fpgm']
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# Parse fpgm
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asm = fpgm.program.getAssembly()
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funcs = {}
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stack = []
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tokens = iter(asm)
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for token in tokens:
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if token.startswith("PUSH") or token.startswith("NPUSH"):
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for token in tokens:
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try:
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num = int(token)
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stack.append(num)
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except ValueError:
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break
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if token.startswith("FDEF"):
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num = stack.pop()
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body = []
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for token in tokens:
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if token.startswith("ENDF"):
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break
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body.append(token)
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funcs[num] = body
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continue
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assert 0, "Unexpected token in fpgm: %s" % token
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# Subset!
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funcs = {i:funcs[i] for i in func_nums}
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# Put it back together:
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asm = []
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if funcs:
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asm.append("PUSH[ ]")
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nums = sorted(funcs.keys())
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asm.extend(str(i) for i in nums)
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for i in nums:
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asm.append("FDEF[ ]")
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asm.extend(funcs[i])
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asm.append("ENDF[ ]")
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import pprint
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pprint.pprint(asm)
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fpgm.program.fromAssembly(asm)
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# Make sure it compiles
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fpgm.program.getBytecode()
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