#!/usr/bin/python
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# coding=UTF-8
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#
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# Copyright 2016 Google Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Create a curated subset of Noto CJK for Android."""
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import os
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from fontTools import ttLib
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from nototools import font_data
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from nototools import tool_utils
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from nototools import ttc_utils
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# Characters supported in Noto CJK fonts that UTR #51 recommends default to
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# emoji-style.
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EMOJI_IN_CJK = {
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0x26BD, # ⚽ SOCCER BALL
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0x26BE, # ⚾ BASEBALL
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0x1F18E, # 🆎 NEGATIVE SQUARED AB
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0x1F191, # 🆑 SQUARED CL
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0x1F192, # 🆒 SQUARED COOL
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0x1F193, # 🆓 SQUARED FREE
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0x1F194, # 🆔 SQUARED ID
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0x1F195, # 🆕 SQUARED NEW
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0x1F196, # 🆖 SQUARED NG
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0x1F197, # 🆗 SQUARED OK
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0x1F198, # 🆘 SQUARED SOS
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0x1F199, # 🆙 SQUARED UP WITH EXCLAMATION MARK
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0x1F19A, # 🆚 SQUARED VS
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0x1F201, # 🈁 SQUARED KATAKANA KOKO
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0x1F21A, # 🈚 SQUARED CJK UNIFIED IDEOGRAPH-7121
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0x1F22F, # 🈯 SQUARED CJK UNIFIED IDEOGRAPH-6307
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0x1F232, # 🈲 SQUARED CJK UNIFIED IDEOGRAPH-7981
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0x1F233, # 🈳 SQUARED CJK UNIFIED IDEOGRAPH-7A7A
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0x1F234, # 🈴 SQUARED CJK UNIFIED IDEOGRAPH-5408
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0x1F235, # 🈵 SQUARED CJK UNIFIED IDEOGRAPH-6E80
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0x1F236, # 🈶 SQUARED CJK UNIFIED IDEOGRAPH-6709
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0x1F238, # 🈸 SQUARED CJK UNIFIED IDEOGRAPH-7533
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0x1F239, # 🈹 SQUARED CJK UNIFIED IDEOGRAPH-5272
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0x1F23A, # 🈺 SQUARED CJK UNIFIED IDEOGRAPH-55B6
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0x1F250, # 🉐 CIRCLED IDEOGRAPH ADVANTAGE
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0x1F251, # 🉑 CIRCLED IDEOGRAPH ACCEPT
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}
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# Characters we have decided we are doing as emoji-style in Android,
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# despite UTR #51's recommendation
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ANDROID_EMOJI = {
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0x2600, # ☀ BLACK SUN WITH RAYS
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0x2601, # ☁ CLOUD
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0X260E, # ☎ BLACK TELEPHONE
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0x261D, # ☝ WHITE UP POINTING INDEX
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0x263A, # ☺ WHITE SMILING FACE
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0x2660, # ♠ BLACK SPADE SUIT
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0x2663, # ♣ BLACK CLUB SUIT
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0x2665, # ♥ BLACK HEART SUIT
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0x2666, # ♦ BLACK DIAMOND SUIT
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0x270C, # ✌ VICTORY HAND
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0x2744, # ❄ SNOWFLAKE
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0x2764, # ❤ HEAVY BLACK HEART
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}
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# We don't want support for ASCII control chars.
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CONTROL_CHARS = tool_utils.parse_int_ranges('0000-001F');
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EXCLUDED_CODEPOINTS = sorted(EMOJI_IN_CJK | ANDROID_EMOJI | CONTROL_CHARS)
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def remove_from_cmap(infile, outfile, exclude=frozenset()):
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"""Removes a set of characters from a font file's cmap table."""
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font = ttLib.TTFont(infile)
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font_data.delete_from_cmap(font, exclude)
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font.save(outfile)
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TEMP_DIR = 'subsetted'
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def remove_codepoints_from_ttc(ttc_name):
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otf_names = ttc_utils.ttcfile_extract(ttc_name, TEMP_DIR)
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with tool_utils.temp_chdir(TEMP_DIR):
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for index, otf_name in enumerate(otf_names):
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print 'Subsetting %s...' % otf_name
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remove_from_cmap(otf_name, otf_name, exclude=EXCLUDED_CODEPOINTS)
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ttc_utils.ttcfile_build(ttc_name, otf_names)
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for f in otf_names:
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os.remove(f)
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remove_codepoints_from_ttc('NotoSansCJK-Regular.ttc')
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remove_codepoints_from_ttc('NotoSerifCJK-Regular.ttc')
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