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| #! /usr/bin/env python | |
| ''' | |
| This simple script can build a ttf with specified character subsets from a file. | |
| The script utilizes fontforge, so it must be available on the system. | |
| ''' | |
| import fontforge | |
| import argparse | |
| import codecs | |
| # return the character set from the given file | |
| # file should be utf-8 encoded | |
| def get_character_set(fname): | |
| with codecs.open(fname, encoding='utf-8') as f: | |
| return f.read() | |
| def build_ttf(source_ttf_fname, dest_ttf_fname, char_set_fname): | |
| char_set = get_character_set(char_set_fname) | |
| source_font = fontforge.open(source_ttf_fname) | |
| # select characters | |
| for c in char_set: | |
| source_font.selection.select(("more", None), ord(c)) | |
| source_font.selection.invert() | |
| # remove all characters we're not interested in | |
| for glyph in source_font.selection: | |
| try: | |
| source_font.removeGlyph(glyph) | |
| except ValueError: | |
| pass | |
| source_font.generate(dest_ttf_fname) | |
| source_font.close() | |
| def parse_args(): | |
| parser = argparse.ArgumentParser() | |
| parser.add_argument('source_ttf', help='source ttf') | |
| parser.add_argument('dest_ttf', help='lite ttf') | |
| parser.add_argument('char_set', help='lite character set') | |
| return parser.parse_args() | |
| if __name__ == '__main__': | |
| namespace = parse_args() | |
| build_ttf(namespace.source_ttf, namespace.dest_ttf, namespace.char_set) |
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