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correctly handle boost::regex_error in selectors

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This commit is contained in:
Maxime Coste 2012-03-04 20:11:22 +00:00
parent 583de3ba6e
commit 0a385885ff
1 changed files with 54 additions and 42 deletions
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96
src/selectors.cc
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@ -367,43 +367,40 @@ SelectionAndCaptures select_whole_buffer(const Selection& selection)
SelectionAndCaptures select_next_match(const Selection& selection,
const std::string& regex)
{
boost::regex ex(regex);
BufferIterator begin = selection.last();
BufferIterator end = begin;
CaptureList captures;
try
{
BufferIterator begin = selection.last();
BufferIterator end = begin;
CaptureList captures;
boost::regex ex(regex);
boost::match_results<BufferIterator> matches;
if (boost::regex_search(begin+1, begin.buffer().end(), matches,
ex))
if (boost::regex_search(begin+1, begin.buffer().end(),
matches, ex))
{
begin = matches[0].first;
end = matches[0].second;
std::copy(matches.begin(), matches.end(),
std::back_inserter(captures));
}
else if (boost::regex_search(begin.buffer().begin(), begin+1, matches,
ex))
else if (boost::regex_search(begin.buffer().begin(), begin+1,
matches, ex))
{
begin = matches[0].first;
end = matches[0].second;
std::copy(matches.begin(), matches.end(),
std::back_inserter(captures));
}
if (begin == end)
++end;
return SelectionAndCaptures(begin, end - 1, std::move(captures));
}
catch (boost::regex_error& err)
{
throw runtime_error("regex error");
throw runtime_error(std::string("regex error: ") + err.what());
}
if (begin == end)
++end;
return SelectionAndCaptures(begin, end - 1, std::move(captures));
}
typedef boost::regex_iterator<BufferIterator> RegexIterator;
@ -411,43 +408,58 @@ typedef boost::regex_iterator<BufferIterator> RegexIterator;
SelectionAndCapturesList select_all_matches(const Selection& selection,
const std::string& regex)
{
boost::regex ex(regex);
RegexIterator re_it(selection.begin(), selection.end(), ex);
RegexIterator re_end;
SelectionAndCapturesList result;
for (; re_it != re_end; ++re_it)
try
{
BufferIterator begin = (*re_it)[0].first;
BufferIterator end = (*re_it)[0].second;
boost::regex ex(regex);
RegexIterator re_it(selection.begin(), selection.end(), ex);
RegexIterator re_end;
CaptureList captures(re_it->begin(), re_it->end());
SelectionAndCapturesList result;
for (; re_it != re_end; ++re_it)
{
BufferIterator begin = (*re_it)[0].first;
BufferIterator end = (*re_it)[0].second;
result.push_back(SelectionAndCaptures(begin, begin == end ? end : end-1,
std::move(captures)));
CaptureList captures(re_it->begin(), re_it->end());
result.push_back(SelectionAndCaptures(begin,
begin == end ? end : end-1,
std::move(captures)));
}
return result;
}
catch (boost::regex_error& err)
{
throw runtime_error(std::string("regex error: ") + err.what());
}
return result;
}
SelectionAndCapturesList split_selection(const Selection& selection,
const std::string& separator_regex)
{
boost::regex ex(separator_regex);
RegexIterator re_it(selection.begin(), selection.end(), ex,
boost::regex_constants::match_nosubs);
RegexIterator re_end;
SelectionAndCapturesList result;
BufferIterator begin = selection.begin();
for (; re_it != re_end; ++re_it)
try
{
BufferIterator end = (*re_it)[0].first;
boost::regex ex(separator_regex);
RegexIterator re_it(selection.begin(), selection.end(), ex,
boost::regex_constants::match_nosubs);
RegexIterator re_end;
result.push_back(Selection(begin, (begin == end) ? end : end-1));
begin = (*re_it)[0].second;
SelectionAndCapturesList result;
BufferIterator begin = selection.begin();
for (; re_it != re_end; ++re_it)
{
BufferIterator end = (*re_it)[0].first;
result.push_back(Selection(begin, (begin == end) ? end : end-1));
begin = (*re_it)[0].second;
}
result.push_back(Selection(begin, selection.last()));
return result;
}
catch (boost::regex_error& err)
{
throw runtime_error(std::string("regex error: ") + err.what());
}
result.push_back(Selection(begin, selection.last()));
return result;
}
}