Changed the way we read different types of scalars.

It's better organized now, I think - nodes only offer a single main way of getting the fundamental scalar (as a string), and now we can specialize a single template to read specific types.

src/scalar.cpp

@@ -4,8 +4,6 @@
 #include "token.h"
 #include "exceptions.h"
 #include "node.h"
-#include <sstream>
-#include <algorithm>
 
 namespace YAML
 {
@@ -39,129 +37,6 @@ namespace YAML
 		out << "\"\n";
 	}
 
-	bool Scalar::Read(std::string& s) const
-	{
-		s = m_data;
-		return true;
-	}
-
-	bool Scalar::Read(int& i) const
-	{
-		std::stringstream data(m_data);
-		data >> i;
-		return !data.fail();
-	}
-
-	bool Scalar::Read(unsigned& u) const
-	{
-		std::stringstream data(m_data);
-		data >> u;
-		return !data.fail();
-	}
-
-	bool Scalar::Read(long& l) const
-	{
-		std::stringstream data(m_data);
-		data >> l;
-		return !data.fail();
-	}
-	
-	bool Scalar::Read(float& f) const
-	{
-		std::stringstream data(m_data);
-		data >> f;
-		return !data.fail();
-	}
-	
-	bool Scalar::Read(double& d) const
-	{
-		std::stringstream data(m_data);
-		data >> d;
-		return !data.fail();
-	}
-
-	bool Scalar::Read(char& c) const
-	{
-		std::stringstream data(m_data);
-		data >> c;
-		return !data.fail();
-	}
-
-	namespace
-	{
-		// we're not gonna mess with the mess that is all the isupper/etc. functions
-		bool IsLower(char ch) { return 'a' <= ch && ch <= 'z'; }
-		bool IsUpper(char ch) { return 'A' <= ch && ch <= 'Z'; }
-		char ToLower(char ch) { return IsUpper(ch) ? ch + 'a' - 'A' : ch; }
-
-		std::string tolower(const std::string& str)
-		{
-			std::string s(str);
-			std::transform(s.begin(), s.end(), s.begin(), ToLower);
-			return s;
-		}
-
-		template <typename T>
-		bool IsEntirely(const std::string& str, T func)
-		{
-			for(unsigned i=0;i<str.size();i++)
-				if(!func(str[i]))
-					return false;
-
-			return true;
-		}
-
-		// IsFlexibleCase
-		// . Returns true if 'str' is:
-		//   . UPPERCASE
-		//   . lowercase
-		//   . Capitalized
-		bool IsFlexibleCase(const std::string& str)
-		{
-			if(str.empty())
-				return true;
-
-			if(IsEntirely(str, IsLower))
-				return true;
-
-			bool firstcaps = IsUpper(str[0]);
-			std::string rest = str.substr(1);
-			return firstcaps && (IsEntirely(rest, IsLower) || IsEntirely(rest, IsUpper));
-		}
-	}
-
-	bool Scalar::Read(bool& b) const
-	{
-		// we can't use iostream bool extraction operators as they don't
-		// recognize all possible values in the table below (taken from
-		// http://yaml.org/type/bool.html)
-		static const struct {
-			std::string truename, falsename;
-		} names[] = {
-			{ "y", "n" },
-			{ "yes", "no" },
-			{ "true", "false" },
-			{ "on", "off" },
-		};
-
-		if(!IsFlexibleCase(m_data))
-			return false;
-
-		for(unsigned i=0;i<sizeof(names)/sizeof(names[0]);i++) {
-			if(names[i].truename == tolower(m_data)) {
-				b = true;
-				return true;
-			}
-
-			if(names[i].falsename == tolower(m_data)) {
-				b = false;
-				return true;
-			}
-		}
-
-		return false;
-	}
-
 	int Scalar::Compare(Content *pContent)
 	{
 		return -pContent->Compare(this);