Unsigned integer support for attributes (as_uint, operator=)

git-svn-id: http://pugixml.googlecode.com/svn/trunk@101 99668b35-9821-0410-8761-19e4c4f06640

src/pugixml.cpp

@@ -1676,6 +1676,13 @@ namespace pugi
 		return atoi(_attr->value);
 	}
 
+	unsigned int xml_attribute::as_uint() const
+	{
+		if(empty() || !_attr->value) return 0;
+		int result = atoi(_attr->value);
+		return result < 0 ? 0 : static_cast<unsigned int>(result);
+	}
+
 	double xml_attribute::as_double() const
 	{
 		if(empty() || !_attr->value) return 0.0;
@@ -1740,6 +1747,14 @@ namespace pugi
 		return *this;
 	}
 
+	xml_attribute& xml_attribute::operator=(unsigned int rhs)
+	{
+		char buf[128];
+		sprintf(buf, "%u", rhs);
+		set_value(buf);
+		return *this;
+	}
+
 	xml_attribute& xml_attribute::operator=(double rhs)
 	{
 		char buf[128];

src/pugixml.hpp

@@ -458,6 +458,14 @@ namespace pugi
 		 */
 		int as_int() const;
 
+		/**
+		 * Cast attribute value as unsigned int.
+		 *
+		 * \return attribute value as unsigned int, or 0 if conversion did not succeed or attribute is empty
+		 * \note values out of non-negative int range (usually [0, 2^31-1]) get clamped to range boundaries
+		 */
+		unsigned int as_uint() const;
+
 		/**
 		 * Cast attribute value as double.
 		 *
@@ -505,6 +513,14 @@ namespace pugi
          *
          * \param rhs - new attribute value
          * \return self
+         */
+		xml_attribute& operator=(unsigned int rhs);
+
+		/**
+         * Set attribute value to \a rhs.
+         *
+         * \param rhs - new attribute value
+         * \return self
          */
 		xml_attribute& operator=(double rhs);