reports: "The left operand to '+' is always 0".
I am scratching my head as I don't think that is correct. Here is the full routine:
+ (NSString*)base64forData:(NSData*)theData {
const
uint8_t* input = (const
uint8_t*)[theData
bytes];
NSInteger length = [theData
length];
static
char table[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
NSMutableData* data = "" style="color: #7235a9">NSMutableData
dataWithLength:((length +
2) / 3) *
4];
uint8_t* output = (uint8_t*)data.mutableBytes;
NSInteger i;
for (i=0; i < length; i +=
3) {
NSInteger value =
0;
NSInteger j;
for (j = i; j < (i +
3); j++) { // <------------- The left operand to '+' is always 0
value <<= 8;
if (j < length) {
value |= (0xFF & input[j]);
}
}
NSInteger theIndex = (i /
3) * 4;
output[theIndex + 0] = table[(value >>
18) & 0x3F];
output[theIndex + 1] = table[(value >>
12) & 0x3F];
output[theIndex + 2] = (i +
1) < length ? table[(value >> 6) &
0x3F] : '=';
output[theIndex + 3] = (i +
2) < length ? table[(value >> 0) &
0x3F] : '=';
}
return [[[NSString
alloc] initWithData:data
encoding:NSASCIIStringEncoding]
autorelease];
}