From 88df29a6b3005856262006f96baff4babd2ded72 Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Sat, 2 Aug 2014 16:30:52 +0200
Subject: [PATCH] Add CMake option to use C++11 features

---
 CMakeLists.txt    | 15 +++++++++++++--
 TileGenerator.cpp |  4 ++--
 TileGenerator.h   | 18 ++++++++++++++++--
 cmake_config.h.in |  2 ++
 config.h          |  3 +++
 5 files changed, 36 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ce358de..f3fae5a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,8 +7,19 @@ set(VERSION_MAJOR 1)
 set(VERSION_MINOR 0)
 set(VERSION_STRING "${VERSION_MAJOR}.${VERSION_MINOR}")
 
-set(CMAKE_CXX_FLAGS_RELEASE "-std=c++0x -Wall -DNDEBUG")
-set(CMAKE_CXX_FLAGS_DEBUG   "-O0 -g -std=c++0x -Wall -Wextra -DDEBUG")
+
+if(NOT CMAKE_BUILD_TYPE)
+	set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build.")
+endif()
+
+option(USE_CXX11 "Use C++11" FALSE)
+if(USE_CXX11)
+	set(CMAKE_CXX_FLAGS_RELEASE "-O3 -std=c++11 -Wall -DNDEBUG")
+	set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g2 -std=c++11 -Wall -Wextra")
+else(USE_CXX11)
+	set(CMAKE_CXX_FLAGS_RELEASE "-O3 -Wall -DNDEBUG")
+	set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g2 -Wall -Wextra")
+endif(USE_CXX11)
 
 # Find libgd
 find_library(LIBGD_LIBRARY gd)
diff --git a/TileGenerator.cpp b/TileGenerator.cpp
index f46a880..fceaf47 100644
--- a/TileGenerator.cpp
+++ b/TileGenerator.cpp
@@ -513,7 +513,7 @@ inline void TileGenerator::renderMapBlock(const ustring &mapBlock, const BlockPo
 				if (content == m_blockIgnoreId || content == m_blockAirId) {
 					continue;
 				}
-				std::map<int, std::string>::iterator blockName = m_nameMap.find(content);
+				NameMap::iterator blockName = m_nameMap.find(content);
 				if (blockName == m_nameMap.end())
 					continue;
 				const string &name = blockName->second;
@@ -688,7 +688,7 @@ void TileGenerator::printUnknown()
 {
 	if (m_unknownNodes.size() > 0) {
 		std::cerr << "Unknown nodes:" << std::endl;
-		for (std::set<std::string>::iterator node = m_unknownNodes.begin(); node != m_unknownNodes.end(); ++node) {
+		for (NameSet::iterator node = m_unknownNodes.begin(); node != m_unknownNodes.end(); ++node) {
 			std::cerr << *node << std::endl;
 		}
 	}
diff --git a/TileGenerator.h b/TileGenerator.h
index cc243bb..258a822 100644
--- a/TileGenerator.h
+++ b/TileGenerator.h
@@ -4,8 +4,14 @@
 #include <gd.h>
 #include <iosfwd>
 #include <list>
+#include <config.h>
+#if USE_CXX11
+#include <unordered_map>
+#include <unordered_set>
+#else
 #include <map>
 #include <set>
+#endif
 #include <stdint.h>
 #include <string>
 #include "PixelAttributes.h"
@@ -37,7 +43,15 @@ struct ColorEntry {
 class TileGenerator
 {
 private:
+#if USE_CXX11
+	typedef std::unordered_map<std::string, ColorEntry> ColorMap;
+	typedef std::unordered_map<int, std::string> NameMap;
+	typedef std::unordered_set<std::string> NameSet;
+#else
 	typedef std::map<std::string, ColorEntry> ColorMap;
+	typedef std::map<int, std::string> NameMap;
+	typedef std::set<std::string> NameSet;
+#endif
 
 public:
 	TileGenerator();
@@ -105,11 +119,11 @@ private:
 	int m_mapWidth;
 	int m_mapHeight;
 	std::list<std::pair<int, int> > m_positions;
-	std::map<int, std::string> m_nameMap;
+	NameMap m_nameMap;
 	ColorMap m_colors;
 	uint16_t m_readedPixels[16];
 	uint16_t m_readInfo[16];
-	std::set<std::string> m_unknownNodes;
+	NameSet m_unknownNodes;
 	Color m_col[16][16];
 	uint8_t m_th[16][16];
 
diff --git a/cmake_config.h.in b/cmake_config.h.in
index fbe6387..6858456 100644
--- a/cmake_config.h.in
+++ b/cmake_config.h.in
@@ -6,5 +6,7 @@
 #define USE_LEVELDB @USE_LEVELDB@
 #define USE_REDIS @USE_REDIS@
 
+#define USE_CXX11 @USE_CXX11@
+
 #endif
 
diff --git a/config.h b/config.h
index f7536a2..c7a37b5 100644
--- a/config.h
+++ b/config.h
@@ -19,4 +19,7 @@
 #include "cmake_config.h"
 #else
 #define USE_LEVELDB 0
+#define USE_REDIS 0
+
+#define USE_CXX11 0
 #endif