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#
# diffoscope: in-depth comparison of files, archives, and directories
#
# Copyright © 2015 Jérémy Bobbio <lunar@debian.org>
# Copyright © 2018-2020 Chris Lamb <lamby@debian.org>
#
# diffoscope 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.
#
# diffoscope 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 diffoscope. If not, see <https://www.gnu.org/licenses/>.
import html
import re
re_diff_line_numbers = re.compile(
r"(^|\n)@@ -(\d+),(\d+) \+(\d+),(\d+) @@(?=\n|$)"
)
def diff_ignore_line_numbers(diff):
return re_diff_line_numbers.sub(r"\1@@ -XX,XX +XX,XX @@", diff)
def _collapse_line(line, escape=html.escape):
len_ = len(escape(line))
return str(len_ - 1) + "\n" if line[-1] == "\n" else str(len_)
def _diff_collapse_line(line):
return (
line[0] + _collapse_line(line[1:])
if line and line[0] in "+- "
else line
)
def _expand_line(line):
return (
(int(line[:-1]) * ".") + "\n"
if line[-1] == "\n"
else (int(line) * ".")
)
def _diff_expand_line(line):
return (
line[0] + _expand_line(line[1:]) if line and line[0] in "+- " else line
)
def diff_collapse(diff):
return diff.map_lines(_diff_collapse_line, _collapse_line)
def diff_expand(diff):
return diff.map_lines(_diff_expand_line, _expand_line)
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