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This appears to work. However, there must be a smarter way to do this
// parses four characters into one wchar unicode character
wchar_t ParseHex(char *input)
{
char *digits = "0123456789ABCDEF";
//char input[5] = "9DDF";
/* Read 4 characters of hex encoded unicode and convert them to
uppercase. */
if (islower(input[0]))
input[0] = toupper(input[0]);
if (islower(input[1]))
input[1] = toupper(input[1]);
if (islower(input[2]))
input[2] = toupper(input[2]);
if (islower(input[3]))
input[3] = toupper(input[3]);
/* Convert from hex to wchar_t */
return (4096 * (strchr(digits, input[0]) - strchr(digits, '0'))
+ 256 * (strchr(digits, input[1]) - strchr(digits, '0'))
+ 16 * (strchr(digits, input[2]) - strchr(digits, '0'))
+ (strchr(digits, input[3]) - strchr(digits, '0'))
);
}
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