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import logging
import os
import sys
from pathlib import Path
from typing import Dict, Union
from .storage import storage
class Journald:
@staticmethod
def log(message :str, level :int = logging.DEBUG) -> None:
try:
import systemd.journal # type: ignore
except ModuleNotFoundError:
return None
log_adapter = logging.getLogger('archinstall')
log_fmt = logging.Formatter("[%(levelname)s]: %(message)s")
log_ch = systemd.journal.JournalHandler()
log_ch.setFormatter(log_fmt)
log_adapter.addHandler(log_ch)
log_adapter.setLevel(logging.DEBUG)
log_adapter.log(level, message)
# TODO: Replace log() for session based logging.
class SessionLogging:
def __init__(self):
pass
# Found first reference here: https://stackoverflow.com/questions/7445658/how-to-detect-if-the-console-does-support-ansi-escape-codes-in-python
# And re-used this: https://github.com/django/django/blob/master/django/core/management/color.py#L12
def supports_color() -> bool:
"""
Return True if the running system's terminal supports color,
and False otherwise.
"""
supported_platform = sys.platform != 'win32' or 'ANSICON' in os.environ
# isatty is not always implemented, #6223.
is_a_tty = hasattr(sys.stdout, 'isatty') and sys.stdout.isatty()
return supported_platform and is_a_tty
# Heavily influenced by: https://github.com/django/django/blob/ae8338daf34fd746771e0678081999b656177bae/django/utils/termcolors.py#L13
# Color options here: https://askubuntu.com/questions/528928/how-to-do-underline-bold-italic-strikethrough-color-background-and-size-i
def stylize_output(text: str, *opts :str, **kwargs) -> str:
"""
Adds styling to a text given a set of color arguments.
"""
opt_dict = {'bold': '1', 'italic': '3', 'underscore': '4', 'blink': '5', 'reverse': '7', 'conceal': '8'}
colors = {
'black' : '0',
'red' : '1',
'green' : '2',
'yellow' : '3',
'blue' : '4',
'magenta' : '5',
'cyan' : '6',
'white' : '7',
'orange' : '8;5;208', # Extended 256-bit colors (not always supported)
'darkorange' : '8;5;202',# https://www.lihaoyi.com/post/BuildyourownCommandLinewithANSIescapecodes.html#256-colors
'gray' : '8;5;246',
'darkgray' : '8;5;240',
'lightgray' : '8;5;256'
}
foreground = {key: f'3{colors[key]}' for key in colors}
background = {key: f'4{colors[key]}' for key in colors}
reset = '0'
code_list = []
if text == '' and len(opts) == 1 and opts[0] == 'reset':
return '\x1b[%sm' % reset
for k, v in kwargs.items():
if k == 'fg':
code_list.append(foreground[str(v)])
elif k == 'bg':
code_list.append(background[str(v)])
for o in opts:
if o in opt_dict:
code_list.append(opt_dict[o])
if 'noreset' not in opts:
text = '%s\x1b[%sm' % (text or '', reset)
return '%s%s' % (('\x1b[%sm' % ';'.join(code_list)), text or '')
def log(*args :str, **kwargs :Union[str, int, Dict[str, Union[str, int]]]) -> None:
string = orig_string = ' '.join([str(x) for x in args])
# Attempt to colorize the output if supported
# Insert default colors and override with **kwargs
if supports_color():
kwargs = {'fg': 'white', **kwargs}
string = stylize_output(string, **kwargs)
# If a logfile is defined in storage,
# we use that one to output everything
if filename := storage.get('LOG_FILE', None):
absolute_logfile = os.path.join(storage.get('LOG_PATH', './'), filename)
try:
Path(absolute_logfile).parents[0].mkdir(exist_ok=True, parents=True)
with open(absolute_logfile, 'a') as log_file:
log_file.write("")
except PermissionError:
# Fallback to creating the log file in the current folder
err_string = f"Not enough permission to place log file at {absolute_logfile}, creating it in {Path('./').absolute() / filename} instead."
absolute_logfile = Path('./').absolute() / filename
absolute_logfile.parents[0].mkdir(exist_ok=True)
absolute_logfile = str(absolute_logfile)
storage['LOG_PATH'] = './'
log(err_string, fg="red")
with open(absolute_logfile, 'a') as log_file:
log_file.write(f"{orig_string}\n")
Journald.log(string, level=int(str(kwargs.get('level', logging.INFO))))
# Finally, print the log unless we skipped it based on level.
# We use sys.stdout.write()+flush() instead of print() to try and
# fix issue #94
if kwargs.get('level', logging.INFO) != logging.DEBUG or storage['arguments'].get('verbose', False):
sys.stdout.write(f"{string}\n")
sys.stdout.flush()
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