Config: Add case-insensitive ini file parser

CMakeLists.txt

@@ -110,6 +110,7 @@ set(MAIN_HEADERS
 	src/flashable.h
 	src/font.h
 	src/input.h
+	src/iniconfig.h
 	src/plane.h
 	src/scene.h
 	src/sprite.h
@@ -167,6 +168,7 @@ set(MAIN_SOURCE
 	src/filesystem.cpp
 	src/font.cpp
 	src/input.cpp
+	src/iniconfig.cpp
 	src/plane.cpp
 	src/scene.cpp
 	src/sprite.cpp

mkxp.pro

@@ -89,6 +89,7 @@ HEADERS += \
 	src/flashable.h \
 	src/font.h \
 	src/input.h \
+	src/iniconfig.h \
 	src/plane.h \
 	src/scene.h \
 	src/sprite.h \
@@ -145,6 +146,7 @@ SOURCES += \
 	src/filesystem.cpp \
 	src/font.cpp \
 	src/input.cpp \
+	src/iniconfig.cpp \
 	src/plane.cpp \
 	src/scene.cpp \
 	src/sprite.cpp \

src/config.cpp

@@ -33,6 +33,7 @@
 #include "debugwriter.h"
 #include "util.h"
 #include "sdl-util.h"
+#include "iniconfig.h"
 
 #ifdef INI_ENCODING
 extern "C" {
@@ -310,26 +311,32 @@ void Config::readGameINI()
 		return;
 	}
 
-	po::options_description podesc;
-	podesc.add_options()
-	        ("Game.Title", po::value<std::string>())
-	        ("Game.Scripts", po::value<std::string>())
-	        ;
-
-	po::variables_map vm;
 	std::string iniFilename = execName + ".ini";
 	SDLRWStream iniFile(iniFilename.c_str(), "r");
 
 	if (iniFile)
 	{
-		try
+		INIConfiguration ic;
+		if(ic.load(iniFile.stream()))
 		{
-			po::store(po::parse_config_file(iniFile.stream(), podesc, true), vm);
-			po::notify(vm);
+			GUARD_ALL( game.title = ic.getStringProperty("Game", "Title"); );
+			GUARD_ALL( game.scripts = ic.getStringProperty("Game", "Scripts"); );
+
+			strReplace(game.scripts, '\\', '/');
+
+			if (game.title.empty())
+			{
+				Debug() << iniFilename + ": Could not find Game.Title property";
 			}
-		catch (po::error &error)
+
+			if (game.scripts.empty())
 			{
-			Debug() << iniFilename + ":" << error.what();
+				Debug() << iniFilename + ": Could not find Game.Scripts property";
+			}
+		}
+		else
+		{
+			Debug() << iniFilename + ": Failed to parse ini file";
 		}
 	}
 	else
@@ -337,11 +344,6 @@ void Config::readGameINI()
 		Debug() << "FAILED to open" << iniFilename;
 	}
 
-	GUARD_ALL( game.title = vm["Game.Title"].as<std::string>(); );
-	GUARD_ALL( game.scripts = vm["Game.Scripts"].as<std::string>(); );
-
-	strReplace(game.scripts, '\\', '/');
-
 #ifdef INI_ENCODING
 	/* Can add more later */
 	const char *languages[] =

src/iniconfig.cpp

@@ -0,0 +1,114 @@
+#include "iniconfig.h"
+
+#include <algorithm>
+
+std::string toLowerCase(const std::string& str)
+{
+	std::string lower = str;
+	std::transform(lower.begin(), lower.end(), lower.begin(), ::tolower);
+	return lower;
+}
+ 
+std::string trim(const std::string& str, const std::string& chars = "\t\n\v\f\r ")
+{
+	std::string trimmed = str;
+	trimmed.erase(trimmed.find_last_not_of(chars) + 1);
+	trimmed.erase(0, trimmed.find_first_not_of(chars));
+	return trimmed;
+}
+
+INIConfiguration::Section::Section (const std::string& sname) : m_Name (sname), m_PropertyMap()
+{
+}
+
+bool INIConfiguration::Section::getStringProperty (const std::string& name, std::string& outPropStr) const
+{
+	try
+	{
+		outPropStr = m_PropertyMap.at(toLowerCase(name)).m_Value;
+		return true;
+	}
+	catch (std::out_of_range& oorexcept)
+	{
+		return false;
+	}
+}
+
+bool INIConfiguration::load (std::istream& is)
+{
+	if (!is.good())
+	{
+		return false;
+	}
+
+	std::string currSectionName;
+
+	std::string line;
+	std::getline (is, line);
+
+	while (!is.eof() && !is.bad())
+	{
+		if (line[0] == '[')
+		{
+			currSectionName = line.substr (1, line.find_last_of (']') - 1);
+		}
+		else if (line[0] != '#' && line.length() > 2)
+		{
+			int crloc = line.length() - 1;
+
+			if (crloc >= 0  && line[crloc] == '\r') //check for Windows-style newline
+				line.resize (crloc);                //and correct
+
+			size_t equalsPos = line.find_first_of ("=");
+
+			if (equalsPos != std::string::npos)
+			{
+				std::string key = line.substr (0, equalsPos);
+				std::string val = line.substr (equalsPos + 1);
+
+				addProperty (currSectionName, key , val);
+			}
+		}
+
+		std::getline (is, line);
+	}
+
+	if (is.bad())
+	{
+		return false;
+	}
+
+	return true;
+}
+
+
+std::string INIConfiguration::getStringProperty(const std::string& sname, const std::string& name, const std::string& def) const
+{
+	auto sectionIt = m_SectionMap.find(toLowerCase(sname));
+
+	if (sectionIt != m_SectionMap.end())
+	{
+		std::string prop;
+
+		if(sectionIt->second.getStringProperty(name, prop))
+		{
+			return prop;
+		}
+	}
+	
+	return def;
+}
+
+void INIConfiguration::addProperty (const std::string& sname, const std::string& name, const std::string& val)
+{
+	if (m_SectionMap.find (toLowerCase(sname)) == m_SectionMap.end())
+	{
+		m_SectionMap.emplace (toLowerCase(sname), Section (sname));
+	}
+
+	Section::Property p;
+	p.m_Name = trim(name);
+	p.m_Value = trim(val);
+
+	m_SectionMap.at (toLowerCase(sname)).m_PropertyMap[toLowerCase(p.m_Name)] = p;
+}

src/iniconfig.h

@@ -0,0 +1,46 @@
+#ifndef INICONFIG_H
+#define INICONFIG_H
+
+#include <iostream>
+#include <map>
+
+class INIConfiguration
+{
+	class Section
+	{
+		friend class INIConfiguration;
+
+		struct Property
+		{
+			std::string m_Name;
+			std::string m_Value;
+		};
+
+		typedef std::map<std::string, Property> property_map;
+	public:
+		Section (const Section& s) = default;
+		Section (Section&& s) = default;
+
+		bool getStringProperty (const std::string& name, std::string& outPropStr) const;
+
+	private:
+		explicit Section (const std::string& name);
+
+		std::string m_Name;
+		property_map m_PropertyMap;
+	};
+
+	typedef std::map<std::string, Section> section_map;
+public:
+	bool load (std::istream& inStream);
+
+	std::string getStringProperty(const std::string& sname, const std::string& name, const std::string& def = "") const;
+
+protected:
+	void addProperty (const std::string& sname, const std::string& name, const std::string& val);
+
+private:
+	section_map m_SectionMap;
+};
+
+#endif // INICONFIG_H