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https://github.com/kennethreitz/clint.git
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FELD Boris
88 lines
1.8 KiB
Python
88 lines
1.8 KiB
Python
# -*- coding: utf-8 -*-
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"""
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clint.textui.core
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~~~~~~~~~~~~~~~~~
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Core TextUI functionality for Puts/Indent/Writer.
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"""
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from __future__ import absolute_import
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import sys
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from contextlib import contextmanager
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from .formatters import max_width, min_width
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from .cols import columns
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from ..utils import tsplit
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__all__ = ('puts', 'puts_err', 'indent', 'dedent', 'columns', 'max_width',
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'min_width')
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STDOUT = sys.stdout.write
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STDERR = sys.stderr.write
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NEWLINES = ('\n', '\r', '\r\n')
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INDENT_STRINGS = []
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# Private
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def _indent(indent=0, quote='', indent_char=' '):
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"""Indent util function, compute new indent_string"""
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if indent > 0:
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indent_string = ''.join((
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str(quote),
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(indent_char * (indent - len(quote)))
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))
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else:
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indent_string = ''.join((
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('\x08' * (-1 * (indent - len(quote)))),
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str(quote))
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)
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if len(indent_string):
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INDENT_STRINGS.append(indent_string)
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# Public
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def puts(s='', newline=True, stream=STDOUT):
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"""Prints given string to stdout via Writer interface."""
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if newline:
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s = tsplit(s, NEWLINES)
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s = map(str, s)
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indent = ''.join(INDENT_STRINGS)
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s = (str('\n' + indent)).join(s)
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_str = ''.join((
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''.join(INDENT_STRINGS),
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str(s),
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'\n' if newline else ''
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))
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stream(_str)
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def puts_err(s='', newline=True, stream=STDERR):
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"""Prints given string to stderr via Writer interface."""
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puts(s, newline, stream)
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def dedent():
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"""Dedent next strings, use only if you use indent otherwise than as a
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context."""
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INDENT_STRINGS.pop()
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@contextmanager
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def _indent_context():
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yield
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dedent()
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def indent(indent=4, quote=''):
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"""Indentation context manager."""
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_indent(indent, quote)
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return _indent_context()
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