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# Copyright (C) 2010 David Barnett <davidbarnett2@gmail.com>
# Copyright (C) 2010 Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from ranger.gui import color
import re
ansi_re = re.compile('(\033' + r'\[\d*(?:;\d+)*?[a-zA-Z])')
reset = '\033[0m'
def split_ansi_from_text(ansi_text):
return ansi_re.split(ansi_text)
def text_with_fg_bg_attr(ansi_text):
for chunk in split_ansi_from_text(ansi_text):
if chunk and chunk[0] == '\033':
if chunk[-1] != 'm':
continue
match = re.match(r'^.\[(.*).$', chunk)
attr_args = match.group(1)
fg, bg, attr = -1, -1, 0
# Convert arguments to attributes/colors
for arg in attr_args.split(';'):
try:
n = int(arg)
except:
if arg == '':
n = 0
else:
continue
if n == 0:
fg, bg, attr = -1, -1, 0
elif n == 1:
attr |= color.bold
elif n == 4:
attr |= color.underline
elif n == 7:
attr |= color.reverse
elif n == 8:
attr |= color.invisible
elif n >= 30 and n <= 37:
fg = n - 30
elif n == 39:
fg = -1
elif n >= 40 and n <= 47:
bg = n - 40
elif n == 49:
bg = -1
yield (fg, bg, attr)
else:
yield chunk
def char_len(ansi_text):
return len(ansi_re.sub('', ansi_text))
def char_slice(ansi_text, start, end):
slice_chunks = []
# skip to start
last_color = None
skip_len_left = start
len_left = end - start
for chunk in split_ansi_from_text(ansi_text):
m = ansi_re.match(chunk)
if m:
if chunk[-1] == 'm':
last_color = chunk
else:
if skip_len_left > len(chunk):
skip_len_left -= len(chunk)
else: # finished skipping to start
if skip_len_left > 0:
chunk = chunk[skip_len_left:]
chunk_left = chunk[:len_left]
if len(chunk_left):
if last_color is not None:
slice_chunks.append(last_color)
slice_chunks.append(chunk_left)
len_left -= len(chunk_left)
if len_left == 0:
break
return ''.join(slice_chunks)
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