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main.py
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main.py
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import os
import sys
import re
import pygments
from pygments.lexers.markup import MarkdownLexer
from pygments.formatters import Terminal256Formatter
from dotenv import load_dotenv
from llama_cpp import Llama
from utils.ansi import AnsiCodes as AC
from utils.chat import Chat
DEBUG = False
ENV_FILE = '.env'
EXIT = 'exit'
ERROR_DN = f'{AC.FG_RED}{AC.BOLD}Error{AC.RESET}'
def throw_error(msg: str, code: int = 1) -> None:
print(f'{ERROR_DN}: {msg}')
exit(code)
def get_env_and_check(key: str) -> str:
value = os.getenv(key)
if value is None:
throw_error(f'missing .env field \'{key}\'', 2)
return str(value)
# Check if .env exists and load it
if os.path.isfile(ENV_FILE):
load_dotenv(ENV_FILE)
else:
throw_error('cannot read .env file.')
# Load .env variables
MODEL_PATH = get_env_and_check('MODEL_PATH')
BOT = get_env_and_check('BOT')
PREFIX_TEMPLATE = get_env_and_check('PREFIX_TEMPLATE')
EOS = get_env_and_check('EOS')
AGENT_SYSTEM = get_env_and_check('AGENT_SYSTEM')
AGENT_USER = get_env_and_check('AGENT_USER')
AGENT_ASSISTANT = get_env_and_check('AGENT_ASSISTANT')
SYSTEM_PROMPT = get_env_and_check('SYSTEM_PROMPT')
ASSISTANT_INITIAL_MESSAGE = get_env_and_check('ASSISTANT_INITIAL_MESSAGE')
REAL_TIME = bool(int(get_env_and_check('REAL_TIME')))
N_CTX = int(get_env_and_check('N_CTX'))
N_GENERATE = int(get_env_and_check('N_GENERATE'))
SEED = int(get_env_and_check('SEED'))
USE_MMAP = bool(int(get_env_and_check('USE_MMAP')))
USE_MLOCK = bool(int(get_env_and_check('USE_MLOCK')))
USE_GPU = bool(int(get_env_and_check('USE_GPU')))
SYSTEM_DN = f'{AC.FG_CYAN}{AC.BOLD}System{AC.RESET}'
USER_DN = f'{AC.FG_RED}{AC.BOLD}User{AC.RESET}'
ASSISTANT_DN = f'{AC.FG_YELLOW}{AC.BOLD}Assistant{AC.RESET}'
INFO_DN = f'{AC.FG_GREEN}{AC.BOLD}Info{AC.RESET}'
BEGIN_USER = PREFIX_TEMPLATE.replace('{agent}', AGENT_USER)
BEGIN_ASSISTANT = PREFIX_TEMPLATE.replace('{agent}', AGENT_ASSISTANT)
BEGIN_SYSTEM = PREFIX_TEMPLATE.replace('{agent}', AGENT_SYSTEM)
WORKING_DIR = sys.argv[1] if len(sys.argv) == 2 else os.getcwd()
CONTEXT_WARNING = min(500, N_GENERATE)
def format_text(text: str) -> str:
lexer = MarkdownLexer()
formatter = Terminal256Formatter(bg='dark')
return pygments.highlight(text, lexer, formatter)
def inject_file(text: str) -> str: # TODO Check if path is absolute. If so, don't append the working dir
match_filename = r'\[(\S*\.\S+)\]' # TODO Support spaces
pattern = re.compile(match_filename)
filenames: list[str] = pattern.findall(text)
new_text = text
for filename in filenames:
filepath = WORKING_DIR + '/' + filename
if os.path.isfile(filepath):
print(f'{INFO_DN}: Injecting {filename} into the context.')
new_text += f'\n\n{file_to_markdown(filename)}'
continue
print(f'{INFO_DN}: Faled injecting: {filename} does not exist.')
new_text += f'\n\nFile {filename} does not exist.'
return new_text
def file_to_markdown(filename: str) -> str:
path = WORKING_DIR + '/' + filename
extension = os.path.splitext(filename)[1][1:]
with open(path, 'r') as f:
text = f.read().strip()
return f'Content of {filename}:\n```{extension}\n{text}\n```'
if __name__ == '__main__':
print(f'{INFO_DN}: Loading model: {MODEL_PATH.split("/")[-1]}')
try:
llama = Llama(
model_path=MODEL_PATH,
seed=SEED,
use_mlock=USE_MLOCK,
use_mmap=USE_MMAP,
n_ctx=N_CTX,
n_gpu_layers=-1 if USE_GPU else 0,
verbose=DEBUG
)
except ValueError as e:
throw_error(f"the model path specified in the .env file is not valid: '{MODEL_PATH}'")
prefixes = {
'system': BEGIN_SYSTEM,
'assistant': BEGIN_ASSISTANT,
'user': BEGIN_USER
}
agents = {
'system': AGENT_SYSTEM,
'assistant': AGENT_ASSISTANT,
'user': AGENT_USER
}
chat = Chat(
model=llama,
prefixes=prefixes,
agents=agents,
bot=BOT,
eos=EOS,
n_generate=N_GENERATE,
debug=DEBUG
)
chat.add_message(agent=AGENT_SYSTEM, content=SYSTEM_PROMPT)
print(f'{SYSTEM_DN}: {SYSTEM_PROMPT}')
chat.add_message(agent=AGENT_ASSISTANT, content=ASSISTANT_INITIAL_MESSAGE)
print(f'{ASSISTANT_DN}: {ASSISTANT_INITIAL_MESSAGE}')
last_message = ''
try:
while 1:
last_message = input(f'{USER_DN}: ').strip()
if len(last_message) == 0: continue
if last_message == EXIT: break
last_message = inject_file(last_message)
free_ctx = chat.add_message(AGENT_USER, last_message)
if free_ctx <= CONTEXT_WARNING:
print(f'{INFO_DN}: context is nearly finished ({free_ctx} tokens left)')
print(f'{ASSISTANT_DN}: ', end='', flush=True)
if not REAL_TIME:
reply, free_ctx = chat.generate_reply()
print(format_text(reply))
else:
for token in chat.generate_reply_stepped():
print(token, end='', flush=True)
free_ctx -= 1 # TODO Check if correct for EOS fixes that do not count as additional tokens
except KeyboardInterrupt:
print()
chat.print_stats()
if DEBUG: print(chat.get_raw_chat())