text-generation-webui/modules/chat.py
2023-04-13 10:35:08 -03:00

526 lines
20 KiB
Python

import base64
import copy
import io
import json
import re
from datetime import datetime
from pathlib import Path
import yaml
from PIL import Image
import modules.extensions as extensions_module
import modules.shared as shared
from modules.extensions import apply_extensions
from modules.html_generator import (chat_html_wrapper, fix_newlines,
make_thumbnail)
from modules.text_generation import (encode, generate_reply,
get_max_prompt_length)
def generate_chat_prompt(user_input, state, **kwargs):
impersonate = kwargs['impersonate'] if 'impersonate' in kwargs else False
_continue = kwargs['_continue'] if '_continue' in kwargs else False
also_return_rows = kwargs['also_return_rows'] if 'also_return_rows' in kwargs else False
is_instruct = state['mode'] == 'instruct'
rows = [f"{state['context'].strip()}\n"]
# Finding the maximum prompt size
chat_prompt_size = state['chat_prompt_size']
if shared.soft_prompt:
chat_prompt_size -= shared.soft_prompt_tensor.shape[1]
max_length = min(get_max_prompt_length(state), chat_prompt_size)
if is_instruct:
prefix1 = f"{state['name1']}\n"
prefix2 = f"{state['name2']}\n"
else:
prefix1 = f"{state['name1']}: "
prefix2 = f"{state['name2']}: "
i = len(shared.history['internal']) - 1
while i >= 0 and len(encode(''.join(rows))[0]) < max_length:
if _continue and i == len(shared.history['internal']) - 1:
rows.insert(1, f"{prefix2}{shared.history['internal'][i][1]}")
else:
rows.insert(1, f"{prefix2}{shared.history['internal'][i][1].strip()}{state['end_of_turn']}\n")
string = shared.history['internal'][i][0]
if string not in ['', '<|BEGIN-VISIBLE-CHAT|>']:
rows.insert(1, f"{prefix1}{string.strip()}{state['end_of_turn']}\n")
i -= 1
if impersonate:
rows.append(f"{prefix1.strip() if not is_instruct else prefix1}")
limit = 2
elif _continue:
limit = 3
else:
# Adding the user message
user_input = fix_newlines(user_input)
if len(user_input) > 0:
rows.append(f"{prefix1}{user_input}{state['end_of_turn']}\n")
# Adding the Character prefix
rows.append(apply_extensions(f"{prefix2.strip() if not is_instruct else prefix2}", "bot_prefix"))
limit = 3
while len(rows) > limit and len(encode(''.join(rows))[0]) >= max_length:
rows.pop(1)
prompt = ''.join(rows)
if also_return_rows:
return prompt, rows
else:
return prompt
def get_stopping_strings(state):
if state['mode'] == 'instruct':
stopping_strings = [f"\n{state['name1']}", f"\n{state['name2']}"]
else:
stopping_strings = [f"\n{state['name1']}:", f"\n{state['name2']}:"]
stopping_strings += state['custom_stopping_strings']
return stopping_strings
def extract_message_from_reply(reply, state):
next_character_found = False
stopping_strings = get_stopping_strings(state)
if state['stop_at_newline']:
lines = reply.split('\n')
reply = lines[0].strip()
if len(lines) > 1:
next_character_found = True
else:
for string in stopping_strings:
idx = reply.find(string)
if idx != -1:
reply = reply[:idx]
next_character_found = True
# If something like "\nYo" is generated just before "\nYou:"
# is completed, trim it
if not next_character_found:
for string in stopping_strings:
for j in range(len(string) - 1, 0, -1):
if reply[-j:] == string[:j]:
reply = reply[:-j]
break
else:
continue
break
reply = fix_newlines(reply)
return reply, next_character_found
def chatbot_wrapper(text, state, regenerate=False, _continue=False):
if shared.model_name == 'None':
print("No model is loaded! Select one in the Model tab.")
yield shared.history['visible']
return
# Defining some variables
cumulative_reply = ''
last_reply = [shared.history['internal'][-1][1], shared.history['visible'][-1][1]] if _continue else None
just_started = True
visible_text = custom_generate_chat_prompt = None
eos_token = '\n' if state['stop_at_newline'] else None
stopping_strings = get_stopping_strings(state)
# Check if any extension wants to hijack this function call
for extension, _ in extensions_module.iterator():
if hasattr(extension, 'input_hijack') and extension.input_hijack['state']:
extension.input_hijack['state'] = False
text, visible_text = extension.input_hijack['value']
if custom_generate_chat_prompt is None and hasattr(extension, 'custom_generate_chat_prompt'):
custom_generate_chat_prompt = extension.custom_generate_chat_prompt
if visible_text is None:
visible_text = text
if not _continue:
text = apply_extensions(text, "input")
# Generating the prompt
kwargs = {'_continue': _continue}
if custom_generate_chat_prompt is None:
prompt = generate_chat_prompt(text, state, **kwargs)
else:
prompt = custom_generate_chat_prompt(text, state, **kwargs)
# Yield *Is typing...*
if not any((regenerate, _continue)):
yield shared.history['visible'] + [[visible_text, shared.processing_message]]
# Generate
for i in range(state['chat_generation_attempts']):
reply = None
for reply in generate_reply(f"{prompt}{' ' if len(cumulative_reply) > 0 else ''}{cumulative_reply}", state, eos_token=eos_token, stopping_strings=stopping_strings):
reply = cumulative_reply + reply
# Extracting the reply
reply, next_character_found = extract_message_from_reply(reply, state)
visible_reply = re.sub("(<USER>|<user>|{{user}})", state['name1'], reply)
visible_reply = apply_extensions(visible_reply, "output")
# We need this global variable to handle the Stop event,
# otherwise gradio gets confused
if shared.stop_everything:
return shared.history['visible']
if just_started:
just_started = False
if not _continue:
shared.history['internal'].append(['', ''])
shared.history['visible'].append(['', ''])
if _continue:
sep = list(map(lambda x: ' ' if len(x) > 0 and x[-1] != ' ' else '', last_reply))
shared.history['internal'][-1] = [text, f'{last_reply[0]}{sep[0]}{reply}']
shared.history['visible'][-1] = [visible_text, f'{last_reply[1]}{sep[1]}{visible_reply}']
else:
shared.history['internal'][-1] = [text, reply]
shared.history['visible'][-1] = [visible_text, visible_reply]
if not shared.args.no_stream:
yield shared.history['visible']
if next_character_found:
break
if reply is not None:
cumulative_reply = reply
yield shared.history['visible']
def impersonate_wrapper(text, state):
if shared.model_name == 'None':
print("No model is loaded! Select one in the Model tab.")
yield ''
return
# Defining some variables
cumulative_reply = ''
eos_token = '\n' if state['stop_at_newline'] else None
prompt = generate_chat_prompt(text, state, impersonate=True)
stopping_strings = get_stopping_strings(state)
# Yield *Is typing...*
yield shared.processing_message
for i in range(state['chat_generation_attempts']):
reply = None
for reply in generate_reply(f"{prompt}{' ' if len(cumulative_reply) > 0 else ''}{cumulative_reply}", state, eos_token=eos_token, stopping_strings=stopping_strings):
reply = cumulative_reply + reply
reply, next_character_found = extract_message_from_reply(reply, state)
yield reply
if next_character_found:
break
if reply is not None:
cumulative_reply = reply
yield reply
def cai_chatbot_wrapper(text, state):
for history in chatbot_wrapper(text, state):
yield chat_html_wrapper(history, state['name1'], state['name2'], state['mode'])
def regenerate_wrapper(text, state):
if (len(shared.history['visible']) == 1 and not shared.history['visible'][0][0]) or len(shared.history['internal']) == 0:
yield chat_html_wrapper(shared.history['visible'], state['name1'], state['name2'], state['mode'])
else:
last_visible = shared.history['visible'].pop()
last_internal = shared.history['internal'].pop()
# Yield '*Is typing...*'
yield chat_html_wrapper(shared.history['visible'] + [[last_visible[0], shared.processing_message]], state['name1'], state['name2'], state['mode'])
for history in chatbot_wrapper(last_internal[0], state, regenerate=True):
shared.history['visible'][-1] = [last_visible[0], history[-1][1]]
yield chat_html_wrapper(shared.history['visible'], state['name1'], state['name2'], state['mode'])
def continue_wrapper(text, state):
if (len(shared.history['visible']) == 1 and not shared.history['visible'][0][0]) or len(shared.history['internal']) == 0:
yield chat_html_wrapper(shared.history['visible'], state['name1'], state['name2'], state['mode'])
else:
# Yield ' ...'
yield chat_html_wrapper(shared.history['visible'][:-1] + [[shared.history['visible'][-1][0], shared.history['visible'][-1][1] + ' ...']], state['name1'], state['name2'], state['mode'])
for history in chatbot_wrapper(shared.history['internal'][-1][0], state, _continue=True):
yield chat_html_wrapper(shared.history['visible'], state['name1'], state['name2'], state['mode'])
def remove_last_message(name1, name2, mode):
if len(shared.history['visible']) > 0 and shared.history['internal'][-1][0] != '<|BEGIN-VISIBLE-CHAT|>':
last = shared.history['visible'].pop()
shared.history['internal'].pop()
else:
last = ['', '']
return chat_html_wrapper(shared.history['visible'], name1, name2, mode), last[0]
def send_last_reply_to_input():
if len(shared.history['internal']) > 0:
return shared.history['internal'][-1][1]
else:
return ''
def replace_last_reply(text, name1, name2, mode):
if len(shared.history['visible']) > 0:
shared.history['visible'][-1][1] = text
shared.history['internal'][-1][1] = apply_extensions(text, "input")
return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
def send_dummy_message(text, name1, name2, mode):
shared.history['visible'].append([text, ''])
shared.history['internal'].append([apply_extensions(text, "input"), ''])
return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
def send_dummy_reply(text, name1, name2, mode):
if len(shared.history['visible']) > 0 and not shared.history['visible'][-1][1] == '':
shared.history['visible'].append(['', ''])
shared.history['internal'].append(['', ''])
shared.history['visible'][-1][1] = text
shared.history['internal'][-1][1] = apply_extensions(text, "input")
return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
def clear_html():
return chat_html_wrapper([], "", "")
def clear_chat_log(name1, name2, greeting, mode):
shared.history['visible'] = []
shared.history['internal'] = []
if greeting != '':
shared.history['internal'] += [['<|BEGIN-VISIBLE-CHAT|>', greeting]]
shared.history['visible'] += [['', apply_extensions(greeting, "output")]]
# Save cleared logs
save_history(mode)
return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
def redraw_html(name1, name2, mode):
return chat_html_wrapper(shared.history['visible'], name1, name2, mode)
def tokenize_dialogue(dialogue, name1, name2, mode):
history = []
messages = []
dialogue = re.sub('<START>', '', dialogue)
dialogue = re.sub('<start>', '', dialogue)
dialogue = re.sub('(\n|^)[Aa]non:', '\\1You:', dialogue)
dialogue = re.sub('(\n|^)\[CHARACTER\]:', f'\\g<1>{name2}:', dialogue)
idx = [m.start() for m in re.finditer(f"(^|\n)({re.escape(name1)}|{re.escape(name2)}):", dialogue)]
if len(idx) == 0:
return history
for i in range(len(idx) - 1):
messages.append(dialogue[idx[i]:idx[i + 1]].strip())
messages.append(dialogue[idx[-1]:].strip())
entry = ['', '']
for i in messages:
if i.startswith(f'{name1}:'):
entry[0] = i[len(f'{name1}:'):].strip()
elif i.startswith(f'{name2}:'):
entry[1] = i[len(f'{name2}:'):].strip()
if not (len(entry[0]) == 0 and len(entry[1]) == 0):
history.append(entry)
entry = ['', '']
print("\033[1;32;1m\nDialogue tokenized to:\033[0;37;0m\n", end='')
for row in history:
for column in row:
print("\n")
for line in column.strip().split('\n'):
print("| " + line + "\n")
print("|\n")
print("------------------------------")
return history
def save_history(mode, timestamp=False):
# Instruct mode histories should not be saved as if
# Alpaca or Vicuna were characters
if mode == 'instruct':
if not timestamp:
return
fname = f"Instruct_{datetime.now().strftime('%Y%m%d-%H%M%S')}.json"
else:
if timestamp:
fname = f"{shared.character}_{datetime.now().strftime('%Y%m%d-%H%M%S')}.json"
else:
fname = f"{shared.character}_persistent.json"
if not Path('logs').exists():
Path('logs').mkdir()
with open(Path(f'logs/{fname}'), 'w', encoding='utf-8') as f:
f.write(json.dumps({'data': shared.history['internal'], 'data_visible': shared.history['visible']}, indent=2))
return Path(f'logs/{fname}')
def load_history(file, name1, name2):
file = file.decode('utf-8')
try:
j = json.loads(file)
if 'data' in j:
shared.history['internal'] = j['data']
if 'data_visible' in j:
shared.history['visible'] = j['data_visible']
else:
shared.history['visible'] = copy.deepcopy(shared.history['internal'])
except:
shared.history['internal'] = tokenize_dialogue(file, name1, name2)
shared.history['visible'] = copy.deepcopy(shared.history['internal'])
def replace_character_names(text, name1, name2):
text = text.replace('{{user}}', name1).replace('{{char}}', name2)
return text.replace('<USER>', name1).replace('<BOT>', name2)
def build_pygmalion_style_context(data):
context = ""
if 'char_persona' in data and data['char_persona'] != '':
context += f"{data['char_name']}'s Persona: {data['char_persona']}\n"
if 'world_scenario' in data and data['world_scenario'] != '':
context += f"Scenario: {data['world_scenario']}\n"
context = f"{context.strip()}\n<START>\n"
return context
def generate_pfp_cache(character):
cache_folder = Path("cache")
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, mode):
shared.character = character
context = greeting = end_of_turn = ""
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 mode == '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)
if 'your_name' in data and data['your_name'] != '':
name1 = data['your_name']
name2 = data['name'] if 'name' in data else data['char_name']
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 = f"{data['context'].strip()}\n\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 'end_of_turn' in data:
end_of_turn = data['end_of_turn']
else:
context = shared.settings['context']
name2 = shared.settings['name2']
greeting = shared.settings['greeting']
end_of_turn = shared.settings['end_of_turn']
if mode != 'instruct':
shared.history['internal'] = []
shared.history['visible'] = []
if 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(greeting, "output")]]
# Create .json log files since they don't already exist
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):
load_character("None", name1, name2, "chat")
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)