Send patches - preferably formatted by git format-patch - to patches at archlinux32 dot org.
summaryrefslogtreecommitdiff
path: root/archinstall/lib/output.py
blob: 29b73bc4c0a1c2be50f5478f931371b823332f2c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
import logging
import os
import sys
from pathlib import Path
from typing import Dict, Union, List, Any

from .storage import storage


class FormattedOutput:

	@classmethod
	def values(cls, o: Any) -> Dict[str, Any]:
		if hasattr(o, 'json'):
			return o.json()
		else:
			return o.__dict__

	@classmethod
	def as_table(cls, obj: List[Any]) -> str:
		column_width: Dict[str, int] = {}
		for o in obj:
			for k, v in cls.values(o).items():
				column_width.setdefault(k, 0)
				column_width[k] = max([column_width[k], len(str(v)), len(k)])

		output = ''
		for key, width in column_width.items():
			key = key.replace('!', '')
			output += key.ljust(width) + ' | '

		output = output[:-3] + '\n'
		output += '-' * len(output) + '\n'

		for o in obj:
			for k, v in cls.values(o).items():
				if '!' in k:
					v = '*' * len(str(v))
				output += str(v).ljust(column_width[k]) + ' | '
			output = output[:-3]
			output += '\n'

		return output


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',
		'teal' : '8;5;109',      # Extended 256-bit colors (not always supported)
		'orange' : '8;5;208',    # https://www.lihaoyi.com/post/BuildyourownCommandLinewithANSIescapecodes.html#256-colors
		'darkorange' : '8;5;202',
		'gray' : '8;5;246',
		'grey' : '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()