diff options
| -rw-r--r-- | ranger/gui/ansi.py | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/ranger/gui/ansi.py b/ranger/gui/ansi.py index ea024977..2a4c4461 100644 --- a/ranger/gui/ansi.py +++ b/ranger/gui/ansi.py @@ -14,18 +14,22 @@ # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. +""" +A library to help to convert ANSI codes to curses instructions. +""" + from ranger.gui import color import re -ansi_re = re.compile('(\033' + r'\[\d*(?:;\d+)*?[a-zA-Z])') -reset = '\033[0m' +ansi_re = re.compile('(\x1b' + r'\[\d*(?:;\d+)*?[a-zA-Z])') +reset = '\x1b[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 and chunk[0] == '\x1b': if chunk[-1] != 'm': continue match = re.match(r'^.\[(.*).$', chunk) @@ -66,9 +70,32 @@ def text_with_fg_bg_attr(ansi_text): yield chunk def char_len(ansi_text): + """ + Count the number of visible characters. + + >>> char_len("\x1b[0;30;40mX\x1b[0m") + 1 + >>> char_len("\x1b[0;30;40mXY\x1b[0m") + 2 + >>> char_len("\x1b[0;30;40mX\x1b[0mY") + 2 + >>> char_len("hello") + 5 + >>> char_len("") + 0 + """ return len(ansi_re.sub('', ansi_text)) def char_slice(ansi_text, start, end): + """ + >>> ansi_string = "\x1b[0;30;40mX\x1b[0;31;41mY\x1b[0m" + >>> char_slice(ansi_string, 0, 1) + '\\x1b[0;30;40mX' + + # XXX: Does not work as expected: + # >>> char_slice(ansi_string, 1, 2) + # '\\x1b[0;31;41mY' + """ slice_chunks = [] # skip to start last_color = None @@ -94,3 +121,7 @@ def char_slice(ansi_text, start, end): if len_left == 0: break return ''.join(slice_chunks) + +if __name__ == '__main__': + import doctest + doctest.testmod() |