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: / proc / self / root / lib / python3 / dist-packages / compose / cli /
Filename : formatter.py
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import logging
from shutil import get_terminal_size

import texttable

from compose.cli import colors


def get_tty_width():
    try:
        # get_terminal_size can't determine the size if compose is piped
        # to another command. But in such case it doesn't make sense to
        # try format the output by terminal size as this output is consumed
        # by another command. So let's pretend we have a huge terminal so
        # output is single-lined
        width, _ = get_terminal_size(fallback=(999, 0))
        return int(width)
    except OSError:
        return 0


class Formatter:
    """Format tabular data for printing."""

    @staticmethod
    def table(headers, rows):
        table = texttable.Texttable(max_width=get_tty_width())
        table.set_cols_dtype(['t' for h in headers])
        table.add_rows([headers] + rows)
        table.set_deco(table.HEADER)
        table.set_chars(['-', '|', '+', '-'])

        return table.draw()


class ConsoleWarningFormatter(logging.Formatter):
    """A logging.Formatter which prints WARNING and ERROR messages with
    a prefix of the log level colored appropriate for the log level.
    """

    def get_level_message(self, record):
        separator = ': '
        if record.levelno >= logging.ERROR:
            return colors.red(record.levelname) + separator
        if record.levelno >= logging.WARNING:
            return colors.yellow(record.levelname) + separator

        return ''

    def format(self, record):
        if isinstance(record.msg, bytes):
            record.msg = record.msg.decode('utf-8')
        message = super().format(record)
        return '{}{}'.format(self.get_level_message(record), message)