From 01ac17ed04640a4d236c66f4a58d6d6634572018 Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Fri, 30 Sep 2011 19:16:23 +0000
Subject: [PATCH] Filters: add a colorize_regex filter

---
 src/filters.cc | 28 ++++++++++++++++++++++++++++
 src/filters.hh | 15 +++++++++++++++
 src/window.cc  | 33 ++++++++++++---------------------
 3 files changed, 55 insertions(+), 21 deletions(-)
 create mode 100644 src/filters.cc
 create mode 100644 src/filters.hh

diff --git a/src/filters.cc b/src/filters.cc
new file mode 100644
index 00000000..acb546d3
--- /dev/null
+++ b/src/filters.cc
@@ -0,0 +1,28 @@
+#include "filters.hh"
+
+namespace Kakoune
+{
+
+void colorize_regex(DisplayBuffer& display_buffer,
+                    const boost::regex& ex, Color color)
+{
+    for (auto atom_it = display_buffer.begin();
+         atom_it != display_buffer.end(); ++atom_it)
+    {
+        boost::smatch matches;
+        if (boost::regex_search(atom_it->content, matches, ex, boost::match_nosubs))
+        {
+            size_t pos = matches.begin()->first - atom_it->content.begin();
+            if (pos != 0)
+                atom_it = display_buffer.split(atom_it, pos) + 1;
+
+            pos = matches.begin()->second - matches.begin()->first;
+            if (pos != atom_it->content.length())
+                atom_it = display_buffer.split(atom_it, pos);
+
+            atom_it->fg_color = color;
+        }
+    }
+}
+
+}
diff --git a/src/filters.hh b/src/filters.hh
new file mode 100644
index 00000000..2366ac9a
--- /dev/null
+++ b/src/filters.hh
@@ -0,0 +1,15 @@
+#ifndef filters_hh_INCLUDED
+#define filters_hh_INCLUDED
+
+#include <boost/regex.hpp>
+#include "display_buffer.hh"
+
+namespace Kakoune
+{
+
+void colorize_regex(DisplayBuffer& display_buffer,
+                    const boost::regex& ex, Color color);
+
+}
+
+#endif // filters_hh_INCLUDED
diff --git a/src/window.cc b/src/window.cc
index 2ba97048..82088435 100644
--- a/src/window.cc
+++ b/src/window.cc
@@ -1,6 +1,7 @@
 #include "window.hh"
 
 #include "assert.hh"
+#include "filters.hh"
 
 #include <algorithm>
 
@@ -106,26 +107,6 @@ private:
     const Window& m_window;
 };
 
-static void blink_void(DisplayBuffer& display_buffer)
-{
-    for (auto atom_it = display_buffer.begin();
-         atom_it != display_buffer.end();)
-    {
-        size_t pos = atom_it->content.find("void");
-        if (pos != std::string::npos)
-        {
-            if (pos != 0)
-                atom_it = display_buffer.split(atom_it, pos) + 1;
-
-            atom_it = display_buffer.split(atom_it, 4);
-            atom_it->attribute |= Attributes::Blink;
-            ++atom_it;
-        }
-        else
-            ++atom_it;
-    }
-}
-
 Window::Window(Buffer& buffer)
     : m_buffer(buffer),
       m_position(0, 0),
@@ -134,7 +115,17 @@ Window::Window(Buffer& buffer)
       m_current_inserter(nullptr)
 {
     m_selections.push_back(Selection(buffer.begin(), buffer.begin()));
-    m_filters.push_back(blink_void);
+    m_filters.push_back(std::bind(colorize_regex, std::placeholders::_1,
+                                  boost::regex("\\<(void|int|float|size_t)\\>"), Color::Yellow));
+    m_filters.push_back(std::bind(colorize_regex, std::placeholders::_1,
+                                  boost::regex("\\<(while|for|if|else|do|switch|case|default|goto|return|using|namespace|try|catch|throw|class|struct|enum|union)\\>"), Color::Blue));
+    m_filters.push_back(std::bind(colorize_regex, std::placeholders::_1,
+                                  boost::regex("\\<(const|auto|static|volatile)\\>"), Color::Green));
+    m_filters.push_back(std::bind(colorize_regex, std::placeholders::_1,
+                                  boost::regex("\\<(true|false|NULL|nullptr|\\d+[fdiu]?)\\>"), Color::Red));
+    m_filters.push_back(std::bind(colorize_regex, std::placeholders::_1,
+                                  boost::regex("//.*$"), Color::Cyan));
+    //m_filters.push_back(std::bind(colorize_regex, std::placeholders::_1, boost::regex("^\\h*.\\w+"), Color::Yellow));
     m_filters.push_back(HighlightSelections(*this));
 }