ids_generate_font.py

# -*- coding: utf-8 -*-

import sys
import urllib
import fontforge
import psMat

BASE_FONT = "TW-Kai-98_1.ttf"
IDS_URL = "https://tools.wmflabs.org/idsgen/%s.svg?字體=%s"
IDS_FONT = "楷體"
IDS_SVG_OUTPUT = "ids_svg/%s.svg"

def main():
    base_font = fontforge.open(BASE_FONT)
    font = fontforge.font()
    font.encoding = "UnicodeBmp"
    font.addLookup('ligatures','gsub_ligature', (),[['liga',[['DFLT', ['dflt']], ['latn', ['dflt']]]]])
    font.addLookupSubtable('ligatures', 'ids_lookup')

    code = 0
    for ids_code in sys.stdin:
        add_ids_glyph(font, base_font, ids_code.strip(), code)
        code += 1
    font.generate("ids.otf")

def add_ids_glyph(font, base_font, ids_code, code):
    print ids_code
    glyph_code = "_".join(c.encode("unicode_escape").strip("\\") for c in ids_code.decode("utf-8"))
    ligature_tuple = tuple("uni%s" % (c.encode("unicode_escape").strip("\\u").upper()) for c in ids_code.decode("utf-8"))

    urllib.urlretrieve(IDS_URL % (ids_code,IDS_FONT), IDS_SVG_OUTPUT % (glyph_code))

    for c in ids_code.decode("utf-8"):
        base_font.selection.select(("unicode", None), ord(c))
        base_font.copy()
        font.selection.select(("unicode", None), ord(c))
        font.paste()

    glyph = font.createChar(-1, "ids%04x" % (code))
    glyph.importOutlines(IDS_SVG_OUTPUT % (glyph_code))
    glyph.transform(psMat.translate(0, -630))
    glyph.transform(psMat.scale(5))
    glyph.width = 1000
    glyph.addPosSub('ids_lookup', ligature_tuple)

if __name__ == "__main__":
    main()