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# Copyright (c) 2021 PaddlePaddle Authors. 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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import re
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import string
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from pypinyin.constants import SUPPORT_UCS4
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# 全角半角转换
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# 英文字符全角 -> 半角映射表 (num: 52)
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F2H_ASCII_LETTERS = {
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chr(ord(char) + 65248): char
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for char in string.ascii_letters
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}
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# 英文字符半角 -> 全角映射表
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H2F_ASCII_LETTERS = {value: key for key, value in F2H_ASCII_LETTERS.items()}
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# 数字字符全角 -> 半角映射表 (num: 10)
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F2H_DIGITS = {chr(ord(char) + 65248): char for char in string.digits}
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# 数字字符半角 -> 全角映射表
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H2F_DIGITS = {value: key for key, value in F2H_DIGITS.items()}
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# 标点符号全角 -> 半角映射表 (num: 32)
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F2H_PUNCTUATIONS = {chr(ord(char) + 65248): char for char in string.punctuation}
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# 标点符号半角 -> 全角映射表
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H2F_PUNCTUATIONS = {value: key for key, value in F2H_PUNCTUATIONS.items()}
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# 空格 (num: 1)
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F2H_SPACE = {'\u3000': ' '}
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H2F_SPACE = {' ': '\u3000'}
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# 非"有拼音的汉字"的字符串，可用于NSW提取
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if SUPPORT_UCS4:
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RE_NSW = re.compile(r'(?:[^'
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r'\u3007' # 〇
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r'\u3400-\u4dbf' # CJK扩展A:[3400-4DBF]
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r'\u4e00-\u9fff' # CJK基本:[4E00-9FFF]
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r'\uf900-\ufaff' # CJK兼容:[F900-FAFF]
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r'\U00020000-\U0002A6DF' # CJK扩展B:[20000-2A6DF]
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r'\U0002A703-\U0002B73F' # CJK扩展C:[2A700-2B73F]
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r'\U0002B740-\U0002B81D' # CJK扩展D:[2B740-2B81D]
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r'\U0002F80A-\U0002FA1F' # CJK兼容扩展:[2F800-2FA1F]
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r'])+')
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else:
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RE_NSW = re.compile( # pragma: no cover
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r'(?:[^'
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r'\u3007' # 〇
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r'\u3400-\u4dbf' # CJK扩展A:[3400-4DBF]
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r'\u4e00-\u9fff' # CJK基本:[4E00-9FFF]
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r'\uf900-\ufaff' # CJK兼容:[F900-FAFF]
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r'])+')
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