Refineverse_Plugin_backup / TranslationFeature.py
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Duplicate from FYP-S1-21/Refineverse_Plugin
26f6649
import re
import sqlite3
from flask import g
from transformers import M2M100ForConditionalGeneration, M2M100Tokenizer
model = M2M100ForConditionalGeneration.from_pretrained("facebook/m2m100_1.2B") # Setting the model to use
tokenizer = M2M100Tokenizer.from_pretrained("facebook/m2m100_1.2B") # Setting the tokenizer to use
# Main function of the translation feature. Performs translation!
def translate_text(input_text, source_language, target_language):
# Grabs the source language to be used in the tokenizer
tokenizer.src_lang = source_language
# Check if the input is empty
if not input_text.strip():
raise ValueError("Empty input!")
# Validate that the input is in the correct format
if not validate_input(input_text):
raise ValueError("Incorrect format!")
# Creates encoded text
encoded_text = tokenizer(input_text, return_tensors="pt")
# Generates new tokens using encoded text from source language
generated_tokens = model.generate(**encoded_text, forced_bos_token_id=tokenizer.get_lang_id(target_language), max_new_tokens=512)
# Decode generated tokens to display translated text
translated_text = tokenizer.batch_decode(generated_tokens, skip_special_tokens=True)[0]
return translated_text
# Helper function for displaying appropriate language names in flash messages
# Note: Python does not have a built-in switch function, so this is just a rough implementation of the logic
def switch(lang):
if lang == "en":
return "English"
elif lang == "zh":
return "Chinese"
elif lang == "ms":
return "Malay"
elif lang == "ta":
return "Tamil"
elif lang == "th":
return "Thai"
# User Input Format Validation Function for all 4 languages
def validate_input(input_text):
# Pattern for English language
pattern_en = r'As a (?P<role>[^,.]+), I want to (?P<goal>[^,.]+)(,|.)+so that (?P<benefit>.+)'
# Pattern for Chinese language
pattern_zh = r'作为(?P<role>[^,.]+),我想要(?P<goal>[^,.]+)(,|。)+以便(?P<benefit>.+)'
# Pattern for Malay language
pattern_ms = r'Sebagai(?P<role>[^,.]+), saya mahu(?P<goal>[^,.]+)(,|.)+supaya(?P<benefit>.+)'
# Pattern for Tamil language
pattern_ta = r'என(?P<role>[^,.]+) எனக்கு வேண்டும்(?P<goal>[^,.]+)(,|.)+அதனால்(?P<benefit>.+) பயன்படுத்தி வைக்கும்'
# Pattern for Thai language
pattern_th = r'ในฐานะ(?P<role>[^,.]+) ฉันต้องการ(?P<goal>[^,.]+)(,|.)+เพื่อที่ฉัน(?P<benefit>.+)'
# Try each pattern to see if there is a match
match_en = re.search(pattern_en, input_text, flags=re.DOTALL)
match_zh = re.search(pattern_zh, input_text, flags=re.DOTALL)
match_ms = re.search(pattern_ms, input_text, flags=re.DOTALL)
match_ta = re.search(pattern_ta, input_text, flags=re.DOTALL)
match_th = re.search(pattern_th, input_text, flags=re.DOTALL)
# Return True if at least one pattern matches, otherwise False
return bool(match_en or match_zh or match_ms or match_ta or match_th)
# Function to grab all contents in the "Translation" table (except for unique ids)
def getTranslatedContents():
db = getattr(g, '_database', None) # Gets the _database attribute from the 'g' object. If it does not exist, returns 'None'
if db is None:
db = g._database = sqlite3.connect('Refineverse.db') # If db is None, create a new connection for db and g._database
cursor = db.cursor() # Creates a cursor object to handle data
cursor.execute("SELECT input_text, translated_text FROM Translation") # The cursor executes the query
rows = cursor.fetchall() # Stores the results of fetchall() into a variable
return rows
# Function to insert a new row into the "Translation" table
def insertTranslationRow(input_text, translated_text):
with sqlite3.connect('Refineverse.db') as conn: # 'With' will automatically take care of closing and opening the connection
cursor = conn.cursor()
cursor.execute("INSERT INTO Translation (input_text, translated_text) VALUES (?, ?)", (input_text, translated_text))
conn.commit()