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

# This project combines the TN and G2P functions of https://github.com/RVC-Boss/GPT-SoVITS and https://github.com/wenet-e2e/WeTextProcessing
# Huawei Technologies Co., Ltd. (authors: Xiao Chen)

from text.cleaner import clean_text
import LangSegment
from text import symbols as symbols_v1
from TN_processors import punct_normalization, MultilingualTN, alphabet_normalization
import sys

class BaseG2P:

    def __init__(self):
        self.sil_symbol = '[SIL]'
        self.comma_symbol = '[CM]'  # ,
        self.peroid_symbol = '[PD]'  # .
        self.question_symbol = '[QN]'  # ?
        self.exclamation_symbol = '[EX]'  # !

        self.punct_to_symbol = {',': self.comma_symbol, '.': self.peroid_symbol,
                                '!': self.exclamation_symbol, '?': self.question_symbol}
        self.er_mapping = {'er1': ('e1', 'rr'), 'er2': ('e2', 'rr'), 'er3': ('e3', 'rr'), 'er4': ('e4', 'rr'),
                           'er5': ('e5', 'rr'), 'r5': ('e5', 'rr')}
        pass

    def replace_punct_with_symbol(self, phone_list):
        rep_list = []
        for ph in phone_list:
            if ph in self.punct_to_symbol:
                rep_list.append(self.punct_to_symbol[ph])
            else:
                rep_list.append(ph)
        return rep_list


class MultilingualG2P(BaseG2P):

    def __init__(self, module="wenet", remove_interjections=False, remove_erhua=True):
        BaseG2P.__init__(self)
        self.tn_module = module
        self.language_module_map = {"zh": "chinese", "en": "english"}
        self.version = "v1"
        self.output_eng_word_boundary = False
        self.output_chn_word_boundary = False
        if self.tn_module == "wenet":
            self.tn_wenet = MultilingualTN("wenet", remove_interjections, remove_erhua)
        return
    
    def set_output_eng_word_boundary(self, output_eng_word_boundary):
        self.output_eng_word_boundary = output_eng_word_boundary

    def set_output_chn_word_boundary(self, output_chn_word_boundary):
        self.output_chn_word_boundary = output_chn_word_boundary

    def g2p_for_norm_text(self, norm_text, language):
        symbols = symbols_v1.symbols
        if(language not in self.language_module_map):
            language="zh"
            text=" "
        language_module = __import__("text."+self.language_module_map[language],fromlist=[self.language_module_map[language]])
        if language == "zh":##########
            phones, word2ph = language_module.g2p(norm_text)
            assert len(phones) == sum(word2ph)
            assert len(norm_text) == len(word2ph)
        elif language == "en":
            if self.output_eng_word_boundary:
                phones = language_module.g2p_with_boundary(norm_text)
            else:
                phones = language_module.g2p(norm_text)
            # if len(phones) < 4:
            #     phones = [','] + phones
            word2ph = None
        else:
            phones = language_module.g2p(norm_text)
            word2ph = None
        phones = ['UNK' if ph not in symbols else ph for ph in phones]
        return phones, word2ph

    def text_normalization_and_g2p(self, text, language, with_lang_prefix=False, normalize_punct=False):
        '''
            language in {en, zh}, if language == "zh", this method supports mixture of English and Chinese input. if language == "en", this method only supports English input.
        '''
        if normalize_punct:
            text = punct_normalization(text)
            # print('norm text: ' + text)
        text = alphabet_normalization(text)
        text = text.lower()
        
        if language in {"en"}:
            language = language.replace("all_", "")
            if language == "en":
                LangSegment.setfilters(["en"])
                formattext = " ".join(tmp["text"]
                                      for tmp in LangSegment.getTexts(text))
            else:
                # 因无法区别中日韩文汉字,以用户输入为准
                formattext = text
            while "  " in formattext:
                formattext = formattext.replace("  ", " ")
            if self.tn_module == "baidu":
                phones, word2ph, norm_text = clean_text(
                    formattext, language, self.version)
                all_norm_text = norm_text
            else:
                norm_formattext = self.tn_wenet.normalize_segment(formattext, language, normalize_punct)
                phones, word2ph = self.g2p_for_norm_text(norm_formattext, language)
                all_norm_text = norm_formattext
        elif language in {"zh", "auto"}:
            textlist = []
            langlist = []
            LangSegment.setfilters(["en", "zh", "ja", "ko"])
            # priority_lang = LangSegment.getfilters()
            if language == "auto":
                for tmp in LangSegment.getTexts(text):
                    langlist.append(tmp["lang"])
                    textlist.append(tmp["text"])
            else:
                for tmp in LangSegment.getTexts(text): 
                    if tmp["lang"] == "en":
                        langlist.append(tmp["lang"])
                    else:
                        # 因无法区别中日韩文汉字,以用户输入为准
                        langlist.append(language)
                    textlist.append(tmp["text"])

            #fix consecutive segment of same language
            mergelist = []
            for idx in range(len(textlist)):
                if idx > 0 and langlist[idx - 1] == langlist[idx]:
                    mergelist.append(1)
                else:
                    mergelist.append(0)
            merged_textlist = []
            merged_langlist = []
            for idx in range(len(mergelist)):
                if mergelist[idx] == 0:
                    merged_textlist.append(textlist[idx])
                    merged_langlist.append(langlist[idx])
                else:
                    merged_textlist[-1] += " " + textlist[idx]

            textlist = merged_textlist
            langlist = merged_langlist

            assert len(textlist) == len(langlist)

            # print(textlist)
            # print(langlist)
            phones_list = []
            norm_text_list = []
            for i in range(len(textlist)):
                lang = langlist[i]
                if self.tn_module == "wenet":
                    norm_text = self.tn_wenet.normalize_segment(textlist[i], lang, normalize_punct)
                    phones, word2ph = self.g2p_for_norm_text(norm_text, lang)
                else:
                    phones, word2ph, norm_text = clean_text(
                        textlist[i], lang, self.version)
                # lang prefix is only for mix language 
                if with_lang_prefix:
                    phones_with_lang = []
                    for ph in phones:
                        if ph[0].isalpha():
                            phones_with_lang.append(lang + '_' + ph)
                        else:
                            phones_with_lang.append(ph)
                    phones_list.append(phones_with_lang)
                else:
                    phones_list.append(phones)
                norm_text_list.append(norm_text)
            phones = sum(phones_list, [])
            all_norm_text = ' '.join(norm_text_list)

        # if not final and len(phones) < 6:
        #     return text_normalization_and_g2p("." + text,language,version,final=True)
        if normalize_punct:
            phones = self.replace_punct_with_symbol(phones)

        return phones, all_norm_text


if __name__ == '__main__':
    '''
    Testing functions
    '''
    # text = '1983年2月,旅行了2天的儿童和长翅膀的女孩儿:“︘菜单修订后有鱼香肉丝儿、『王道椒香鸡腿〕和川蜀鸡翅?……”it\'s a test 112.王会计会计算机。which had been in force since 1760.调查员决定调节调查的难度。Article VI, Qing government would be charged an annual interest rate of 5% for the money.√2和π是不是无理数?'
    # text = '马打兰王国(732-1006),是8世纪到10世纪期间,存在于中爪哇的一个印度化王国。'
    language = 'zh' # zh means the model treats all non-English as Chinese,  en means the model treats all langauge as English.
    mG2P = MultilingualG2P("wenet", remove_interjections=False, remove_erhua=False) # 'baidu' or 'wenet'
    mG2P.set_output_eng_word_boundary(True)
    sys.stdout.write("Input: ")
    sys.stdout.flush()
    for line in sys.stdin:
        if line.strip() == "exit()":
            exit()
        if len(line.strip()) <= 0:
            sys.stdout.write("Input: ")
            sys.stdout.flush()
            continue
        phones, norm_text = mG2P.text_normalization_and_g2p(
            line.strip(), language, with_lang_prefix=True, normalize_punct=True)
        sys.stdout.write("Norm Text: " + norm_text + "\n")
        sys.stdout.write("phonemes: " + " ".join(phones) + "\n")
        sys.stdout.write("Input: ")
        sys.stdout.flush()