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NSString Encoding issue
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// 1.usedEncoding. try to determine the encoding, and return the encoding which was used. | |
NSURL *url = xxx; | |
NSStringEncoding encoding = NSUTF8StringEncoding; | |
NSError *error = nil; | |
NSString *foo = [NSString stringWithContentsOfURL:url usedEncoding:&encoding error:&error]; | |
if (foo == nil) { | |
NSLog(@"%@", error); | |
NSLog(@"%@", [NSNumber numberWithUnsignedLong:encoding]); | |
NSLog(@"%@", [NSString localizedNameOfStringEncoding:encoding]); | |
} | |
// 2.availableStringEncodings | |
const NSStringEncoding *availableStringEncodings = [NSString availableStringEncodings]; | |
NSStringEncoding endcoding; | |
NSData *data = xxx; | |
NSString *foo = nil; | |
while ((endcoding = *availableStringEncodings++) != 0) { | |
foo = [[NSString alloc] initWithData:data encoding:endcoding]; | |
if (foo != nil) { | |
NSLog(@"%@", [NSNumber numberWithUnsignedLong:endcoding]); | |
break; | |
} | |
} | |
// 3. CFStringConvertEncodingToNSStringEncoding | |
NSData *data = xxx; | |
NSString *foo = [[NSString alloc] initWithData:data encoding:CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingHZ_GB_2312)]; |
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