def compare_to(self, other, context_lines=4, template=False):
"""Compare the paste with another paste."""
udiff = u'\n'.join(difflib.unified_diff(
self.code.splitlines(),
other.code.splitlines(),
fromfile='Paste #%s' % self.identifier,
tofile='Paste #%s' % other.identifier,
lineterm='',
n=context_lines
))
if template:
diff, info = prepare_udiff(udiff)
return diff and diff[0] or None
return udiff
def highlight_diff(code, _linenos=True):
"""Highlights an unified diff."""
diffs, info = prepare_udiff(code)
if code and not diffs:
# the diff was quite very much malformatted.
# TODO: we do not yet support diffs made by GNU Diff!
lexer = TextLexer()
style = get_style(name_only=True)
formatter = HtmlFormatter(linenos=_linenos, cssclass='syntax',
style=style)
return u'<div class="code">%s</div>' % \
pygments.highlight(code, lexer, formatter)
return render_template('utils/udiff.html', diffs=diffs, info=info,
linenos=_linenos)