Initial import from old repository

git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@4 52acb1d6-8a22-11de-b505-999d5b087335

src/functions.cpp

@@ -0,0 +1,59 @@
+#include "includes.h"
+
+// Convert a "hex string" to an integer by Anders Molin
+int httoi(const char* value)
+{
+	struct HEXMAP
+	{
+		byte c;
+		int value;
+	};
+
+	const int nHexMap = 16;
+	
+	HEXMAP hmLookup[nHexMap] =
+	{
+		{'0', 0}, {'1', 1},
+		{'2', 2}, {'3', 3},
+		{'4', 4}, {'5', 5},
+		{'6', 6}, {'7', 7},
+		{'8', 8}, {'9', 9},
+		{'A', 10}, {'B', 11},
+		{'C', 12}, {'D', 13},
+		{'E', 14}, {'F', 15}
+	};
+
+	const char* s = value;
+	int result = 0;
+	
+	if (*s == '0' && *(s + 1) == 'x')
+		s += 2;
+	
+	bool firsttime = true;
+	
+	while (*s != '\0')
+	{
+		bool found = false;
+
+		for (int i = 0; i < nHexMap; i++)
+		{
+			if (*s == hmLookup[i].c)
+			{
+				if (!firsttime)
+					result <<= 4;
+				
+				result |= hmLookup[i].value;
+				found = true;
+				break;
+			}
+		}
+		
+		if (!found)
+			break;
+		
+		s++;
+		firsttime = false;
+	}
+
+	return result;
+}