mirror of
https://github.com/oobabooga/text-generation-webui.git
synced 2024-11-22 16:17:57 +01:00
516 lines
20 KiB
Python
516 lines
20 KiB
Python
import base64
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import copy
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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.extensions as extensions_module
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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, fix_newlines,
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make_thumbnail)
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from modules.text_generation import (encode, generate_reply,
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get_max_prompt_length)
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def generate_chat_prompt(user_input, state, **kwargs):
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impersonate = kwargs['impersonate'] if 'impersonate' in kwargs else False
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_continue = kwargs['_continue'] if '_continue' in kwargs else False
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also_return_rows = kwargs['also_return_rows'] if 'also_return_rows' in kwargs else False
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is_instruct = state['mode'] == 'instruct'
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rows = [f"{state['context'].strip()}\n"]
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# Finding the maximum prompt size
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chat_prompt_size = state['chat_prompt_size']
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if shared.soft_prompt:
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chat_prompt_size -= shared.soft_prompt_tensor.shape[1]
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max_length = min(get_max_prompt_length(state), chat_prompt_size)
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if is_instruct:
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prefix1 = f"{state['name1']}\n"
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prefix2 = f"{state['name2']}\n"
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else:
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prefix1 = f"{state['name1']}: "
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prefix2 = f"{state['name2']}: "
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i = len(shared.history['internal']) - 1
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while i >= 0 and len(encode(''.join(rows))[0]) < max_length:
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if _continue and i == len(shared.history['internal']) - 1:
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rows.insert(1, f"{prefix2}{shared.history['internal'][i][1]}")
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else:
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rows.insert(1, f"{prefix2}{shared.history['internal'][i][1].strip()}{state['end_of_turn']}\n")
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string = shared.history['internal'][i][0]
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if string not in ['', '<|BEGIN-VISIBLE-CHAT|>']:
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rows.insert(1, f"{prefix1}{string.strip()}{state['end_of_turn']}\n")
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i -= 1
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if impersonate:
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rows.append(f"{prefix1.strip() if not is_instruct else prefix1}")
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limit = 2
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elif _continue:
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limit = 3
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else:
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# Adding the user message
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user_input = fix_newlines(user_input)
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if len(user_input) > 0:
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rows.append(f"{prefix1}{user_input}{state['end_of_turn']}\n")
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# Adding the Character prefix
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rows.append(apply_extensions(f"{prefix2.strip() if not is_instruct else prefix2}", "bot_prefix"))
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limit = 3
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while len(rows) > limit and len(encode(''.join(rows))[0]) >= max_length:
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rows.pop(1)
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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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if state['mode'] == 'instruct':
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stopping_strings = [f"\n{state['name1']}", f"\n{state['name2']}"]
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else:
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stopping_strings = [f"\n{state['name1']}:", f"\n{state['name2']}:"]
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stopping_strings += 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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reply = fix_newlines(reply)
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return reply, next_character_found
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def chatbot_wrapper(text, state, regenerate=False, _continue=False):
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# Defining some variables
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cumulative_reply = ''
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last_reply = [shared.history['internal'][-1][1], shared.history['visible'][-1][1]] if _continue else None
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just_started = True
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visible_text = custom_generate_chat_prompt = 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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# Check if any extension wants to hijack this function call
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for extension, _ in extensions_module.iterator():
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if hasattr(extension, 'input_hijack') and extension.input_hijack['state']:
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extension.input_hijack['state'] = False
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text, visible_text = extension.input_hijack['value']
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if custom_generate_chat_prompt is None and hasattr(extension, 'custom_generate_chat_prompt'):
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custom_generate_chat_prompt = extension.custom_generate_chat_prompt
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if visible_text is None:
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visible_text = text
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if not _continue:
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text = apply_extensions(text, "input")
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# Generating the prompt
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kwargs = {'_continue': _continue}
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if custom_generate_chat_prompt is None:
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prompt = generate_chat_prompt(text, state, **kwargs)
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else:
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prompt = custom_generate_chat_prompt(text, state, **kwargs)
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# Yield *Is typing...*
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if not any((regenerate, _continue)):
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yield shared.history['visible'] + [[visible_text, shared.processing_message]]
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# Generate
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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(f"{prompt}{' ' if len(cumulative_reply) > 0 else ''}{cumulative_reply}", state, eos_token=eos_token, stopping_strings=stopping_strings):
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reply = cumulative_reply + reply
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# Extracting 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(visible_reply, "output")
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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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return shared.history['visible']
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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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shared.history['internal'].append(['', ''])
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shared.history['visible'].append(['', ''])
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if _continue:
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sep = list(map(lambda x: ' ' if len(x) > 0 and x[-1] != ' ' else '', last_reply))
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shared.history['internal'][-1] = [text, f'{last_reply[0]}{sep[0]}{reply}']
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shared.history['visible'][-1] = [visible_text, f'{last_reply[1]}{sep[1]}{visible_reply}']
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else:
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shared.history['internal'][-1] = [text, reply]
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shared.history['visible'][-1] = [visible_text, visible_reply]
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if not shared.args.no_stream:
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yield shared.history['visible']
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if next_character_found:
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break
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if reply is not None:
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cumulative_reply = reply
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yield shared.history['visible']
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def impersonate_wrapper(text, state):
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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(text, state, impersonate=True)
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stopping_strings = get_stopping_strings(state)
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# Yield *Is typing...*
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yield shared.processing_message
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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(f"{prompt}{' ' if len(cumulative_reply) > 0 else ''}{cumulative_reply}", state, eos_token=eos_token, stopping_strings=stopping_strings):
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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
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if next_character_found:
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break
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if reply is not None:
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cumulative_reply = reply
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yield reply
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def cai_chatbot_wrapper(text, state):
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for history in chatbot_wrapper(text, state):
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yield chat_html_wrapper(history, state['name1'], state['name2'], state['mode'])
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def regenerate_wrapper(text, state):
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if (len(shared.history['visible']) == 1 and not shared.history['visible'][0][0]) or len(shared.history['internal']) == 0:
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yield chat_html_wrapper(shared.history['visible'], state['name1'], state['name2'], state['mode'])
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else:
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last_visible = shared.history['visible'].pop()
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last_internal = shared.history['internal'].pop()
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# Yield '*Is typing...*'
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yield chat_html_wrapper(shared.history['visible'] + [[last_visible[0], shared.processing_message]], state['name1'], state['name2'], state['mode'])
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for history in chatbot_wrapper(last_internal[0], state, regenerate=True):
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shared.history['visible'][-1] = [last_visible[0], history[-1][1]]
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yield chat_html_wrapper(shared.history['visible'], state['name1'], state['name2'], state['mode'])
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def continue_wrapper(text, state):
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if (len(shared.history['visible']) == 1 and not shared.history['visible'][0][0]) or len(shared.history['internal']) == 0:
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yield chat_html_wrapper(shared.history['visible'], state['name1'], state['name2'], state['mode'])
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else:
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# Yield ' ...'
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yield chat_html_wrapper(shared.history['visible'][:-1] + [[shared.history['visible'][-1][0], shared.history['visible'][-1][1] + ' ...']], state['name1'], state['name2'], state['mode'])
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for history in chatbot_wrapper(shared.history['internal'][-1][0], state, _continue=True):
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yield chat_html_wrapper(shared.history['visible'], state['name1'], state['name2'], state['mode'])
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def remove_last_message(name1, name2, mode):
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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 chat_html_wrapper(shared.history['visible'], name1, name2, mode), 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, name1, name2, mode):
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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(text, "input")
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return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
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def send_dummy_message(text, name1, name2, mode):
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shared.history['visible'].append([text, ''])
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shared.history['internal'].append([apply_extensions(text, "input"), ''])
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return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
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def send_dummy_reply(text, name1, name2, mode):
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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(text, "input")
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return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
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def clear_html():
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return chat_html_wrapper([], "", "")
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def clear_chat_log(name1, name2, greeting, mode):
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shared.history['visible'] = []
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shared.history['internal'] = []
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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(greeting, "output")]]
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# Save cleared logs
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save_history(mode)
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return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
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def redraw_html(name1, name2, mode):
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return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
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def tokenize_dialogue(dialogue, name1, name2, mode):
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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 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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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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def generate_pfp_cache(character):
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cache_folder = Path("cache")
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if not cache_folder.exists():
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cache_folder.mkdir()
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for path in [Path(f"characters/{character}.{extension}") for extension in ['png', 'jpg', 'jpeg']]:
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if path.exists():
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img = make_thumbnail(Image.open(path))
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img.save(Path('cache/pfp_character.png'), format='PNG')
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return img
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return None
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def load_character(character, name1, name2, mode):
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shared.character = character
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context = greeting = end_of_turn = ""
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greeting_field = 'greeting'
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picture = None
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# Deleting the profile picture cache, if any
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if Path("cache/pfp_character.png").exists():
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Path("cache/pfp_character.png").unlink()
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if character != 'None':
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folder = 'characters' if not mode == 'instruct' else 'characters/instruction-following'
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picture = generate_pfp_cache(character)
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for extension in ["yml", "yaml", "json"]:
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filepath = Path(f'{folder}/{character}.{extension}')
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if filepath.exists():
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break
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file_contents = open(filepath, 'r', encoding='utf-8').read()
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data = json.loads(file_contents) if extension == "json" else yaml.safe_load(file_contents)
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if 'your_name' in data and data['your_name'] != '':
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name1 = data['your_name']
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name2 = data['name'] if 'name' in data else data['char_name']
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for field in ['context', 'greeting', 'example_dialogue', 'char_persona', 'char_greeting', 'world_scenario']:
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if field in data:
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data[field] = replace_character_names(data[field], name1, name2)
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if 'context' in data:
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context = f"{data['context'].strip()}\n\n"
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elif "char_persona" in data:
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context = build_pygmalion_style_context(data)
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greeting_field = 'char_greeting'
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if 'example_dialogue' in data:
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context += f"{data['example_dialogue'].strip()}\n"
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if greeting_field in data:
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greeting = data[greeting_field]
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if 'end_of_turn' in data:
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end_of_turn = data['end_of_turn']
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else:
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context = shared.settings['context']
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name2 = shared.settings['name2']
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greeting = shared.settings['greeting']
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end_of_turn = shared.settings['end_of_turn']
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if mode != 'instruct':
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shared.history['internal'] = []
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shared.history['visible'] = []
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if Path(f'logs/{shared.character}_persistent.json').exists():
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load_history(open(Path(f'logs/{shared.character}_persistent.json'), 'rb').read(), name1, name2)
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else:
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# Insert greeting if it exists
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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(greeting, "output")]]
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|
|
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# Create .json log files since they don't already exist
|
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save_history(mode)
|
|
|
|
return name1, name2, picture, greeting, context, end_of_turn, chat_html_wrapper(shared.history['visible'], name1, name2, mode)
|
|
|
|
|
|
def load_default_history(name1, name2):
|
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load_character("None", name1, name2, "chat")
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|
|
|
|
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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'))
|
|
print(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, name1, name2, mode):
|
|
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'))
|
|
print('Profile picture saved to "cache/pfp_me.png"')
|
|
|
|
return chat_html_wrapper(shared.history['visible'], name1, name2, mode, reset_cache=True) |