Merged emitter branch into trunk, changes r105:r151

src/stream.h

@@ -7,14 +7,15 @@ namespace YAML
 {
 	// a simple buffer wrapper that knows how big it is
 	struct Buffer {
-		Buffer(char *b, int s): buffer(b), size(s) {}
+		Buffer(const char *b, int s): buffer(b), size(s) {}
 
 		operator bool() const { return size > 0; }
 		bool operator !() const { return !static_cast <bool> (*this); }
 		char operator [] (int i) const { return buffer[i]; }
 		const Buffer operator + (int offset) const { return Buffer(buffer + offset, size - offset); }
+		Buffer& operator ++ () { ++buffer; --size; return *this; }
 
-		char *buffer;
+		const char *buffer;
 		int size;
 	};