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from __future__ import unicode_literals
import math
import re
import shlex
from prompt_toolkit.output.defaults import create_output
RE_ANSI_ESCAPE = re.compile(r'\x1b[^m]*m')
def smart_quote(s):
return shlex.quote(s)
def unquote(s):
quotes = ["'", '"']
quote_str = None
if s[0] in quotes:
quote_str = s[0]
if quote_str and s[-1] == quote_str:
return s[1: -1]
return s
def unescape(s, exclude=None):
if exclude:
char = '[^%s]' % exclude
else:
char = '.'
return re.sub(r'\\(%s)' % char, r'\1', s)
def get_terminal_size():
return create_output().get_size()
def strip_ansi_escapes(text):
return RE_ANSI_ESCAPE.sub('', text)
def colformat(strings, num_sep_spaces=1, terminal_width=None):
"""Format a list of strings like ls does multi-column output."""
if terminal_width is None:
terminal_width = get_terminal_size().columns
if not strings:
return
num_items = len(strings)
max_len = max([len(strip_ansi_escapes(s)) for s in strings])
num_columns = min(
int((terminal_width + num_sep_spaces) / (max_len + num_sep_spaces)),
num_items)
num_columns = max(1, num_columns)
num_lines = int(math.ceil(float(num_items) / num_columns))
num_columns = int(math.ceil(float(num_items) / num_lines))
num_elements_last_column = num_items % num_lines
if num_elements_last_column == 0:
num_elements_last_column = num_lines
lines = []
for i in range(num_lines):
line_size = num_columns
if i >= num_elements_last_column:
line_size -= 1
lines.append([None] * line_size)
for i, line in enumerate(lines):
line_size = len(line)
for j in range(line_size):
k = i + num_lines * j
item = strings[k]
if j % line_size != line_size - 1:
item_len = len(strip_ansi_escapes(item))
item = item + ' ' * (max_len - item_len)
line[j] = item
sep = ' ' * num_sep_spaces
for line in lines:
yield sep.join(line)
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