zephyr/scripts/meta/west/log.py

106 lines
2.5 KiB
Python

# Copyright 2018 Open Source Foundries Limited.
#
# SPDX-License-Identifier: Apache-2.0
'''Logging module for west
Provides common methods for logging messages to display to the user.'''
from west import config
import colorama
import sys
VERBOSE_NONE = 0
'''Base verbosity level (zero), no verbose messages printed.'''
VERBOSE_NORMAL = 1
'''Base verbosity level, some verbose messages printed.'''
VERBOSE_VERY = 2
'''Very verbose output messages will be printed.'''
VERBOSE_EXTREME = 3
'''Extremely verbose output messages will be printed.'''
VERBOSE = VERBOSE_NONE
'''Global verbosity level. VERBOSE_NONE is the default.'''
def set_verbosity(value):
'''Set the logging verbosity level.'''
global VERBOSE
VERBOSE = int(value)
def dbg(*args, level=VERBOSE_NORMAL):
'''Print a verbose debug logging message.
The message is only printed if level is at least the current
verbosity level.'''
if level > VERBOSE:
return
print(*args)
def inf(*args, colorize=False):
'''Print an informational message.
colorize (default: False):
If True, the message is printed in bright green if stdout is a terminal.
'''
if not config.use_colors():
colorize = False
# This approach colorizes any sep= and end= text too, as expected.
#
# colorama automatically strips the ANSI escapes when stdout isn't a
# terminal (by wrapping sys.stdout).
if colorize:
print(colorama.Fore.LIGHTGREEN_EX, end='')
print(*args)
if colorize:
_reset_colors(sys.stdout)
def wrn(*args):
'''Print a warning.'''
if config.use_colors():
print(colorama.Fore.LIGHTRED_EX, end='', file=sys.stderr)
print('WARNING: ', end='', file=sys.stderr)
print(*args, file=sys.stderr)
if config.use_colors():
_reset_colors(sys.stderr)
def err(*args, fatal=False):
'''Print an error.'''
if config.use_colors():
print(colorama.Fore.LIGHTRED_EX, end='', file=sys.stderr)
print('FATAL ERROR: ' if fatal else 'ERROR: ', end='', file=sys.stderr)
print(*args, file=sys.stderr)
if config.use_colors():
_reset_colors(sys.stderr)
def die(*args, exit_code=1):
'''Print a fatal error, and abort with the given exit code.'''
err(*args, fatal=True)
sys.exit(exit_code)
def _reset_colors(file):
# The flush=True avoids issues with unrelated output from commands (usually
# Git) becoming colorized, due to the final attribute reset ANSI escape
# getting line-buffered
print(colorama.Style.RESET_ALL, end='', file=file, flush=True)