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import streamlit as st
import epitran
import langcodes
from langcodes import LanguageTagError
from pathlib import Path
from operator import itemgetter
# TODO: reverse transliterate?
def get_lang_description_from_mapping_name(string_to_check):
if "generic-Latn" == string_to_check:
return "Generic Latin Script"
if len(string_to_check)<2:
return None
substrings = string_to_check.split("-")
substrings = substrings[:2] # first two are ISO 639-3 language, and ISO 15924 script
string_to_check = "-".join(substrings)
description = None
lang = langcodes.get(string_to_check)
if lang:
items = []
for key, value in lang.describe().items():
if key == "language":
iso_code = lang.to_alpha3()
value = f"[{value}](https://iso639-3.sil.org/code/{iso_code})"
items.append(f"{key}: {value}")
description = ", ".join(items)
if substrings[-1] == "red":
description = description + " (reduced)"
return description
def get_valid_epitran_mappings_list():
map_path = Path(epitran.__path__[0]) / "data" / "map"
map_files = map_path.glob("*.*")
valid_mappings = [map_file.stem for map_file in map_files]
valid_mappings.append("cmn-Hans")
problem_mappings = ['generic-Latn',
'tur-Latn-bab',
'ood-Latn-sax',
'vie-Latn-so',
'vie-Latn-ce',
'vie-Latn-no',
'kaz-Cyrl-bab'] # https://github.com/dmort27/epitran/issues/98
filtered_mappings = [mapping for mapping in valid_mappings if mapping not in problem_mappings]
return filtered_mappings
if __name__ == "__main__":
st.write("# Phonemize your text with [Epitran](https://github.com/dmort27/epitran)!")
st.write("Epitran is a library and tool for transliterating orthographic text as IPA (International Phonetic Alphabet), by Mortensen, David R. and Dalmia, Siddharth and Littell, Patrick.")
valid_epitran_mappings = get_valid_epitran_mappings_list()
index_of_swa_latn = valid_epitran_mappings.index("swa-Latn")
st.write(f"It supports converting many writing sytems to IPA symbols, including approximately {len(valid_epitran_mappings)} languages/scripts, listed below:")
#st.write(valid_epitran_mappings)
selected_mapping = st.selectbox("Select input language/script:", valid_epitran_mappings, index=index_of_swa_latn)
description = get_lang_description_from_mapping_name(selected_mapping)
st.write(f"Selected input language/script: {description}")
if selected_mapping = "cmn-Hans":
st.info("Chinese requires a special dictionary. Downloading now")
epitran.download.cedict()
st.info("attempting to instantiate epitran transliterator for your language/script")
epi = epitran.Epitran(selected_mapping)
input_text = st.text_area(label="Whatever you type here will be transliterated!", value="Gari langu linaloangama limejaa na mikunga")
# combined_code = "-".join([iso_lang_code, iso_script_code])
# st.write(f"Combined code: {combined_code}")
st.info(f"transliterating `{input_text}`\n\tusing {selected_mapping}...")
transliteration = epi.transliterate(input_text)
st.success(transliteration)
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