RegexSelector: support multi selections, bound to s key

src/main.cc

@@ -512,6 +512,16 @@ void do_paste(Window& window, int count)
     window.clear_selections();
 }
 
+void do_select_regex(Window& window, int count)
+{
+    try
+    {
+        RegexSelector selector(prompt("select: "));
+        window.multi_select(selector);
+    }
+    catch (prompt_aborted&) {}
+}
+
 std::unordered_map<char, std::function<void (Window& window, int count)>> keymap =
 {
     { 'h', [](Window& window, int count) { window.move_cursor(DisplayCoord(0, -std::max(count,1))); } },
@@ -545,6 +555,8 @@ std::unordered_map<char, std::function<void (Window& window, int count)>> keymap
     { 'p', do_paste<true> },
     { 'P', do_paste<false> },
 
+    { 's', do_select_regex },
+
     { '%', [](Window& window, int count) { window.select([](const BufferIterator& cursor)
                                                          { return Selection(cursor.buffer().begin(), cursor.buffer().end()-1); }); } },
 

src/regex_selector.cc

@@ -9,8 +9,6 @@ RegexSelector::RegexSelector(const std::string& exp)
 
 Selection RegexSelector::operator()(const BufferIterator& cursor) const
 {
-    BufferIterator line_end = cursor + 1;
-
     try
     {
         boost::match_results<BufferIterator> matches;
@@ -28,4 +26,23 @@ Selection RegexSelector::operator()(const BufferIterator& cursor) const
     return Selection(cursor, cursor);
 }
 
+SelectionList RegexSelector::operator()(const Selection& selection) const
+{
+    boost::regex_iterator<BufferIterator> re_it(selection.begin(),
+                                                selection.end(),
+                                                m_regex, boost::match_nosubs);
+    boost::regex_iterator<BufferIterator> re_end;
+
+    SelectionList result;
+    for (; re_it != re_end; ++re_it)
+    {
+        BufferIterator begin = (*re_it)[0].first;
+        BufferIterator end   = (*re_it)[0].second;
+        assert(begin != end);
+
+        result.push_back(Selection(begin, end-1));
+    }
+    return result;
+}
+
 }

src/regex_selector.hh

@@ -15,6 +15,7 @@ public:
     RegexSelector(const std::string& exp);
 
     Selection operator()(const BufferIterator& cursor) const;
+    SelectionList operator()(const Selection& selection) const;
 
 private:
     boost::regex m_regex;