mirror of
https://github.com/oobabooga/text-generation-webui.git
synced 2024-11-23 00:18:20 +01:00
669 lines
23 KiB
Python
669 lines
23 KiB
Python
import ast
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import base64
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import copy
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import functools
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import io
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import json
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import re
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from datetime import datetime
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from pathlib import Path
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import yaml
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from PIL import Image
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import modules.shared as shared
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from modules.extensions import apply_extensions
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from modules.html_generator import chat_html_wrapper, make_thumbnail
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from modules.logging_colors import logger
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from modules.text_generation import (generate_reply, get_encoded_length,
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get_max_prompt_length)
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from modules.utils import replace_all
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def get_turn_substrings(state, instruct=False):
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if instruct:
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if 'turn_template' not in state or state['turn_template'] == '':
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template = '<|user|>\n<|user-message|>\n<|bot|>\n<|bot-message|>\n'
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else:
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template = state['turn_template'].replace(r'\n', '\n')
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else:
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template = '<|user|>: <|user-message|>\n<|bot|>: <|bot-message|>\n'
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replacements = {
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'<|user|>': state['name1_instruct' if instruct else 'name1'].strip(),
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'<|bot|>': state['name2_instruct' if instruct else 'name2'].strip(),
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}
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output = {
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'user_turn': template.split('<|bot|>')[0],
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'bot_turn': '<|bot|>' + template.split('<|bot|>')[1],
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'user_turn_stripped': template.split('<|bot|>')[0].split('<|user-message|>')[0],
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'bot_turn_stripped': '<|bot|>' + template.split('<|bot|>')[1].split('<|bot-message|>')[0],
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}
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for k in output:
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output[k] = replace_all(output[k], replacements)
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return output
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def generate_chat_prompt(user_input, state, **kwargs):
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impersonate = kwargs.get('impersonate', False)
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_continue = kwargs.get('_continue', False)
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also_return_rows = kwargs.get('also_return_rows', False)
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history = kwargs.get('history', shared.history)['internal']
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is_instruct = state['mode'] == 'instruct'
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# Find the maximum prompt size
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max_length = min(get_max_prompt_length(state), state['chat_prompt_size'])
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all_substrings = {
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'chat': get_turn_substrings(state, instruct=False),
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'instruct': get_turn_substrings(state, instruct=True)
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}
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substrings = all_substrings['instruct' if is_instruct else 'chat']
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# Create the template for "chat-instruct" mode
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if state['mode'] == 'chat-instruct':
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wrapper = ''
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command = state['chat-instruct_command'].replace('<|character|>', state['name2'] if not impersonate else state['name1'])
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wrapper += state['context_instruct']
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wrapper += all_substrings['instruct']['user_turn'].replace('<|user-message|>', command)
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wrapper += all_substrings['instruct']['bot_turn_stripped']
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if impersonate:
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wrapper += substrings['user_turn_stripped'].rstrip(' ')
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elif _continue:
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wrapper += apply_extensions("bot_prefix", substrings['bot_turn_stripped'])
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wrapper += history[-1][1]
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else:
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wrapper += apply_extensions("bot_prefix", substrings['bot_turn_stripped'].rstrip(' '))
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else:
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wrapper = '<|prompt|>'
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# Build the prompt
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min_rows = 3
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i = len(history) - 1
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rows = [state['context_instruct'] if is_instruct else f"{state['context'].strip()}\n"]
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while i >= 0 and get_encoded_length(wrapper.replace('<|prompt|>', ''.join(rows))) < max_length:
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if _continue and i == len(history) - 1:
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if state['mode'] != 'chat-instruct':
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rows.insert(1, substrings['bot_turn_stripped'] + history[i][1].strip())
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else:
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rows.insert(1, substrings['bot_turn'].replace('<|bot-message|>', history[i][1].strip()))
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string = history[i][0]
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if string not in ['', '<|BEGIN-VISIBLE-CHAT|>']:
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rows.insert(1, replace_all(substrings['user_turn'], {'<|user-message|>': string.strip(), '<|round|>': str(i)}))
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i -= 1
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if impersonate:
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if state['mode'] == 'chat-instruct':
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min_rows = 1
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else:
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min_rows = 2
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rows.append(substrings['user_turn_stripped'].rstrip(' '))
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elif not _continue:
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# Add the user message
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if len(user_input) > 0:
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rows.append(replace_all(substrings['user_turn'], {'<|user-message|>': user_input.strip(), '<|round|>': str(len(history))}))
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# Add the character prefix
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if state['mode'] != 'chat-instruct':
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rows.append(apply_extensions("bot_prefix", substrings['bot_turn_stripped'].rstrip(' ')))
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while len(rows) > min_rows and get_encoded_length(wrapper.replace('<|prompt|>', ''.join(rows))) >= max_length:
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rows.pop(1)
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prompt = wrapper.replace('<|prompt|>', ''.join(rows))
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if also_return_rows:
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return prompt, rows
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else:
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return prompt
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def get_stopping_strings(state):
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stopping_strings = []
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if state['mode'] in ['instruct', 'chat-instruct']:
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stopping_strings += [
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state['turn_template'].split('<|user-message|>')[1].split('<|bot|>')[0] + '<|bot|>',
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state['turn_template'].split('<|bot-message|>')[1] + '<|user|>'
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]
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replacements = {
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'<|user|>': state['name1_instruct'],
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'<|bot|>': state['name2_instruct']
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}
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for i in range(len(stopping_strings)):
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stopping_strings[i] = replace_all(stopping_strings[i], replacements).rstrip(' ').replace(r'\n', '\n')
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if state['mode'] in ['chat', 'chat-instruct']:
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stopping_strings += [
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f"\n{state['name1']}:",
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f"\n{state['name2']}:"
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]
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stopping_strings += ast.literal_eval(f"[{state['custom_stopping_strings']}]")
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return stopping_strings
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def extract_message_from_reply(reply, state):
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next_character_found = False
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stopping_strings = get_stopping_strings(state)
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if state['stop_at_newline']:
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lines = reply.split('\n')
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reply = lines[0].strip()
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if len(lines) > 1:
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next_character_found = True
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else:
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for string in stopping_strings:
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idx = reply.find(string)
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if idx != -1:
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reply = reply[:idx]
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next_character_found = True
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# If something like "\nYo" is generated just before "\nYou:"
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# is completed, trim it
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if not next_character_found:
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for string in stopping_strings:
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for j in range(len(string) - 1, 0, -1):
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if reply[-j:] == string[:j]:
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reply = reply[:-j]
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break
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else:
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continue
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break
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return reply, next_character_found
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def chatbot_wrapper(text, history, state, regenerate=False, _continue=False, loading_message=True):
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output = copy.deepcopy(history)
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output = apply_extensions('history', output)
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if shared.model_name == 'None' or shared.model is None:
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logger.error("No model is loaded! Select one in the Model tab.")
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yield output
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return
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# Defining some variables
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just_started = True
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visible_text = None
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eos_token = '\n' if state['stop_at_newline'] else None
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stopping_strings = get_stopping_strings(state)
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# Preparing the input
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if not any((regenerate, _continue)):
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text, visible_text = apply_extensions('input_hijack', text, visible_text)
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if visible_text is None:
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visible_text = text
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text = apply_extensions('input', text)
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# *Is typing...*
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if loading_message:
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yield {'visible': output['visible'] + [[visible_text, shared.processing_message]], 'internal': output['internal']}
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else:
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text, visible_text = output['internal'][-1][0], output['visible'][-1][0]
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if regenerate:
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output['visible'].pop()
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output['internal'].pop()
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# *Is typing...*
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if loading_message:
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yield {'visible': output['visible'] + [[visible_text, shared.processing_message]], 'internal': output['internal']}
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elif _continue:
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last_reply = [output['internal'][-1][1], output['visible'][-1][1]]
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if loading_message:
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yield {'visible': output['visible'][:-1] + [[visible_text, last_reply[1] + '...']], 'internal': output['internal']}
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# Generating the prompt
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kwargs = {
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'_continue': _continue,
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'history': output,
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}
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prompt = apply_extensions('custom_generate_chat_prompt', text, state, **kwargs)
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if prompt is None:
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prompt = generate_chat_prompt(text, state, **kwargs)
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# Generate
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cumulative_reply = ''
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for i in range(state['chat_generation_attempts']):
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reply = None
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for j, reply in enumerate(generate_reply(prompt + cumulative_reply, state, eos_token=eos_token, stopping_strings=stopping_strings, is_chat=True)):
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reply = cumulative_reply + reply
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# Extract the reply
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reply, next_character_found = extract_message_from_reply(reply, state)
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visible_reply = re.sub("(<USER>|<user>|{{user}})", state['name1'], reply)
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visible_reply = apply_extensions("output", visible_reply)
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# We need this global variable to handle the Stop event,
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# otherwise gradio gets confused
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if shared.stop_everything:
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yield output
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return
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if just_started:
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just_started = False
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if not _continue:
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output['internal'].append(['', ''])
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output['visible'].append(['', ''])
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if _continue:
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output['internal'][-1] = [text, last_reply[0] + reply]
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output['visible'][-1] = [visible_text, last_reply[1] + visible_reply]
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if state['stream']:
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yield output
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elif not (j == 0 and visible_reply.strip() == ''):
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output['internal'][-1] = [text, reply.lstrip(' ')]
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output['visible'][-1] = [visible_text, visible_reply.lstrip(' ')]
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if state['stream']:
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yield output
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if next_character_found:
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break
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if reply in [None, cumulative_reply]:
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break
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else:
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cumulative_reply = reply
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yield output
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def impersonate_wrapper(text, start_with, state):
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if shared.model_name == 'None' or shared.model is None:
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logger.error("No model is loaded! Select one in the Model tab.")
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yield ''
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return
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# Defining some variables
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cumulative_reply = ''
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eos_token = '\n' if state['stop_at_newline'] else None
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prompt = generate_chat_prompt('', state, impersonate=True)
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stopping_strings = get_stopping_strings(state)
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yield text + '...'
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cumulative_reply = text
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for i in range(state['chat_generation_attempts']):
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reply = None
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for reply in generate_reply(prompt + cumulative_reply, state, eos_token=eos_token, stopping_strings=stopping_strings, is_chat=True):
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reply = cumulative_reply + reply
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reply, next_character_found = extract_message_from_reply(reply, state)
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yield reply.lstrip(' ')
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if shared.stop_everything:
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return
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if next_character_found:
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break
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if reply in [None, cumulative_reply]:
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break
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else:
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cumulative_reply = reply
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yield cumulative_reply.lstrip(' ')
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def generate_chat_reply(text, history, state, regenerate=False, _continue=False, loading_message=True):
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if regenerate or _continue:
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text = ''
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if (len(history['visible']) == 1 and not history['visible'][0][0]) or len(history['internal']) == 0:
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yield history
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return
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for history in chatbot_wrapper(text, history, state, regenerate=regenerate, _continue=_continue, loading_message=loading_message):
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yield history
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# Same as above but returns HTML for the UI
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def generate_chat_reply_wrapper(text, start_with, state, regenerate=False, _continue=False):
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if start_with != '' and _continue == False:
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if regenerate == True:
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text = remove_last_message()
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regenerate = False
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_continue = True
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send_dummy_message(text)
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send_dummy_reply(start_with)
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for i, history in enumerate(generate_chat_reply(text, shared.history, state, regenerate, _continue, loading_message=True)):
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if i != 0:
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shared.history = copy.deepcopy(history)
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yield chat_html_wrapper(history['visible'], state['name1'], state['name2'], state['mode'], state['chat_style'])
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def remove_last_message():
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if len(shared.history['visible']) > 0 and shared.history['internal'][-1][0] != '<|BEGIN-VISIBLE-CHAT|>':
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last = shared.history['visible'].pop()
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shared.history['internal'].pop()
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else:
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last = ['', '']
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return last[0]
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def send_last_reply_to_input():
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if len(shared.history['internal']) > 0:
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return shared.history['internal'][-1][1]
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else:
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return ''
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def replace_last_reply(text):
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if len(shared.history['visible']) > 0:
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shared.history['visible'][-1][1] = text
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shared.history['internal'][-1][1] = apply_extensions("input", text)
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def send_dummy_message(text):
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shared.history['visible'].append([text, ''])
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shared.history['internal'].append([apply_extensions("input", text), ''])
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def send_dummy_reply(text):
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if len(shared.history['visible']) > 0 and not shared.history['visible'][-1][1] == '':
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shared.history['visible'].append(['', ''])
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shared.history['internal'].append(['', ''])
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shared.history['visible'][-1][1] = text
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shared.history['internal'][-1][1] = apply_extensions("input", text)
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def clear_chat_log(greeting, mode):
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shared.history['visible'] = []
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shared.history['internal'] = []
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if mode != 'instruct':
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if greeting != '':
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shared.history['internal'] += [['<|BEGIN-VISIBLE-CHAT|>', greeting]]
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shared.history['visible'] += [['', apply_extensions("output", greeting)]]
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save_history(mode)
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def redraw_html(name1, name2, mode, style, reset_cache=False):
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return chat_html_wrapper(shared.history['visible'], name1, name2, mode, style, reset_cache=reset_cache)
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def tokenize_dialogue(dialogue, name1, name2):
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history = []
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messages = []
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dialogue = re.sub('<START>', '', dialogue)
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dialogue = re.sub('<start>', '', dialogue)
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dialogue = re.sub('(\n|^)[Aa]non:', '\\1You:', dialogue)
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dialogue = re.sub('(\n|^)\[CHARACTER\]:', f'\\g<1>{name2}:', dialogue)
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idx = [m.start() for m in re.finditer(f"(^|\n)({re.escape(name1)}|{re.escape(name2)}):", dialogue)]
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if len(idx) == 0:
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return history
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for i in range(len(idx) - 1):
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messages.append(dialogue[idx[i]:idx[i + 1]].strip())
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messages.append(dialogue[idx[-1]:].strip())
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entry = ['', '']
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for i in messages:
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if i.startswith(f'{name1}:'):
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entry[0] = i[len(f'{name1}:'):].strip()
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elif i.startswith(f'{name2}:'):
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entry[1] = i[len(f'{name2}:'):].strip()
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if not (len(entry[0]) == 0 and len(entry[1]) == 0):
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history.append(entry)
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entry = ['', '']
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print("\033[1;32;1m\nDialogue tokenized to:\033[0;37;0m\n", end='')
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for row in history:
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for column in row:
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print("\n")
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for line in column.strip().split('\n'):
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print("| " + line + "\n")
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print("|\n")
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print("------------------------------")
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return history
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def save_history(mode, timestamp=False):
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# Instruct mode histories should not be saved as if
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# Alpaca or Vicuna were characters
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if mode == 'instruct':
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if not timestamp:
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return
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fname = f"Instruct_{datetime.now().strftime('%Y%m%d-%H%M%S')}.json"
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else:
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if shared.character == 'None':
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return
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if timestamp:
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fname = f"{shared.character}_{datetime.now().strftime('%Y%m%d-%H%M%S')}.json"
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else:
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fname = f"{shared.character}_persistent.json"
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if not Path('logs').exists():
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Path('logs').mkdir()
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with open(Path(f'logs/{fname}'), 'w', encoding='utf-8') as f:
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f.write(json.dumps({'data': shared.history['internal'], 'data_visible': shared.history['visible']}, indent=2))
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return Path(f'logs/{fname}')
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def load_history(file, name1, name2):
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file = file.decode('utf-8')
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try:
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j = json.loads(file)
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if 'data' in j:
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shared.history['internal'] = j['data']
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if 'data_visible' in j:
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shared.history['visible'] = j['data_visible']
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else:
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shared.history['visible'] = copy.deepcopy(shared.history['internal'])
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except:
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shared.history['internal'] = tokenize_dialogue(file, name1, name2)
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shared.history['visible'] = copy.deepcopy(shared.history['internal'])
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def replace_character_names(text, name1, name2):
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text = text.replace('{{user}}', name1).replace('{{char}}', name2)
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return text.replace('<USER>', name1).replace('<BOT>', name2)
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|
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def build_pygmalion_style_context(data):
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context = ""
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if 'char_persona' in data and data['char_persona'] != '':
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context += f"{data['char_name']}'s Persona: {data['char_persona']}\n"
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if 'world_scenario' in data and data['world_scenario'] != '':
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context += f"Scenario: {data['world_scenario']}\n"
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context = f"{context.strip()}\n<START>\n"
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return context
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|
|
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def generate_pfp_cache(character):
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cache_folder = Path("cache")
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if not cache_folder.exists():
|
|
cache_folder.mkdir()
|
|
|
|
for path in [Path(f"characters/{character}.{extension}") for extension in ['png', 'jpg', 'jpeg']]:
|
|
if path.exists():
|
|
img = make_thumbnail(Image.open(path))
|
|
img.save(Path('cache/pfp_character.png'), format='PNG')
|
|
return img
|
|
|
|
return None
|
|
|
|
|
|
def load_character(character, name1, name2, instruct=False):
|
|
shared.character = character
|
|
context = greeting = turn_template = ""
|
|
greeting_field = 'greeting'
|
|
picture = None
|
|
|
|
# Deleting the profile picture cache, if any
|
|
if Path("cache/pfp_character.png").exists():
|
|
Path("cache/pfp_character.png").unlink()
|
|
|
|
if character != 'None':
|
|
folder = 'characters' if not instruct else 'characters/instruction-following'
|
|
picture = generate_pfp_cache(character)
|
|
for extension in ["yml", "yaml", "json"]:
|
|
filepath = Path(f'{folder}/{character}.{extension}')
|
|
if filepath.exists():
|
|
break
|
|
|
|
file_contents = open(filepath, 'r', encoding='utf-8').read()
|
|
data = json.loads(file_contents) if extension == "json" else yaml.safe_load(file_contents)
|
|
|
|
# Finding the bot's name
|
|
for k in ['name', 'bot', '<|bot|>', 'char_name']:
|
|
if k in data and data[k] != '':
|
|
name2 = data[k]
|
|
break
|
|
|
|
# Find the user name (if any)
|
|
for k in ['your_name', 'user', '<|user|>']:
|
|
if k in data and data[k] != '':
|
|
name1 = data[k]
|
|
break
|
|
|
|
for field in ['context', 'greeting', 'example_dialogue', 'char_persona', 'char_greeting', 'world_scenario']:
|
|
if field in data:
|
|
data[field] = replace_character_names(data[field], name1, name2)
|
|
|
|
if 'context' in data:
|
|
context = data['context']
|
|
if not instruct:
|
|
context = context.strip() + '\n'
|
|
elif "char_persona" in data:
|
|
context = build_pygmalion_style_context(data)
|
|
greeting_field = 'char_greeting'
|
|
|
|
if 'example_dialogue' in data:
|
|
context += f"{data['example_dialogue'].strip()}\n"
|
|
|
|
if greeting_field in data:
|
|
greeting = data[greeting_field]
|
|
|
|
if 'turn_template' in data:
|
|
turn_template = data['turn_template']
|
|
|
|
else:
|
|
context = shared.settings['context']
|
|
name2 = shared.settings['name2']
|
|
greeting = shared.settings['greeting']
|
|
turn_template = shared.settings['turn_template']
|
|
|
|
if not instruct:
|
|
shared.history['internal'] = []
|
|
shared.history['visible'] = []
|
|
if shared.character != 'None' and Path(f'logs/{shared.character}_persistent.json').exists():
|
|
load_history(open(Path(f'logs/{shared.character}_persistent.json'), 'rb').read(), name1, name2)
|
|
else:
|
|
# Insert greeting if it exists
|
|
if greeting != "":
|
|
shared.history['internal'] += [['<|BEGIN-VISIBLE-CHAT|>', greeting]]
|
|
shared.history['visible'] += [['', apply_extensions("output", greeting)]]
|
|
|
|
# Create .json log files since they don't already exist
|
|
save_history('instruct' if instruct else 'chat')
|
|
|
|
return name1, name2, picture, greeting, context, repr(turn_template)[1:-1]
|
|
|
|
|
|
@functools.cache
|
|
def load_character_memoized(character, name1, name2, instruct=False):
|
|
return load_character(character, name1, name2, instruct=instruct)
|
|
|
|
|
|
def upload_character(json_file, img, tavern=False):
|
|
json_file = json_file if type(json_file) == str else json_file.decode('utf-8')
|
|
data = json.loads(json_file)
|
|
outfile_name = data["char_name"]
|
|
i = 1
|
|
while Path(f'characters/{outfile_name}.json').exists():
|
|
outfile_name = f'{data["char_name"]}_{i:03d}'
|
|
i += 1
|
|
|
|
if tavern:
|
|
outfile_name = f'TavernAI-{outfile_name}'
|
|
|
|
with open(Path(f'characters/{outfile_name}.json'), 'w', encoding='utf-8') as f:
|
|
f.write(json_file)
|
|
|
|
if img is not None:
|
|
img = Image.open(io.BytesIO(img))
|
|
img.save(Path(f'characters/{outfile_name}.png'))
|
|
|
|
logger.info(f'New character saved to "characters/{outfile_name}.json".')
|
|
return outfile_name
|
|
|
|
|
|
def upload_tavern_character(img, name1, name2):
|
|
_img = Image.open(io.BytesIO(img))
|
|
_img.getexif()
|
|
decoded_string = base64.b64decode(_img.info['chara'])
|
|
_json = json.loads(decoded_string)
|
|
_json = {"char_name": _json['name'], "char_persona": _json['description'], "char_greeting": _json["first_mes"], "example_dialogue": _json['mes_example'], "world_scenario": _json['scenario']}
|
|
return upload_character(json.dumps(_json), img, tavern=True)
|
|
|
|
|
|
def upload_your_profile_picture(img):
|
|
cache_folder = Path("cache")
|
|
if not cache_folder.exists():
|
|
cache_folder.mkdir()
|
|
|
|
if img is None:
|
|
if Path("cache/pfp_me.png").exists():
|
|
Path("cache/pfp_me.png").unlink()
|
|
else:
|
|
img = make_thumbnail(img)
|
|
img.save(Path('cache/pfp_me.png'))
|
|
logger.info('Profile picture saved to "cache/pfp_me.png"')
|
|
|
|
|
|
def delete_file(path):
|
|
if path.exists():
|
|
logger.warning(f'Deleting {path}')
|
|
path.unlink(missing_ok=True)
|
|
|
|
|
|
def save_character(name, greeting, context, picture, filename, instruct=False):
|
|
if filename == "":
|
|
logger.error("The filename is empty, so the character will not be saved.")
|
|
return
|
|
|
|
folder = 'characters' if not instruct else 'characters/instruction-following'
|
|
data = {
|
|
'name': name,
|
|
'greeting': greeting,
|
|
'context': context,
|
|
}
|
|
|
|
data = {k: v for k, v in data.items() if v} # Strip falsy
|
|
filepath = Path(f'{folder}/{filename}.yaml')
|
|
with filepath.open('w') as f:
|
|
yaml.dump(data, f, sort_keys=False)
|
|
|
|
logger.info(f'Wrote {filepath}')
|
|
path_to_img = Path(f'{folder}/{filename}.png')
|
|
if picture and not instruct:
|
|
picture.save(path_to_img)
|
|
logger.info(f'Wrote {path_to_img}')
|
|
elif path_to_img.exists():
|
|
delete_file(path_to_img)
|
|
|
|
|
|
def delete_character(name, instruct=False):
|
|
folder = 'characters' if not instruct else 'characters/instruction-following'
|
|
for extension in ["yml", "yaml", "json"]:
|
|
delete_file(Path(f'{folder}/{name}.{extension}'))
|
|
|
|
delete_file(Path(f'{folder}/{name}.png'))
|