Examples of UTF8 to Unicode and nsstring contain other characters (control characters and front and back spaces) processing

UTF8 Turn Unicode

Idea: Turn UTF8 into Byte (Unicode) and then turn to NSData type.
+ (int) addstrwithwided: (NSString *) NEWSTR:(Byte *) buf {
if (newstr = = nil)
return 0;
int len = 0;
Char fnamestr[1024]; The bigger is the big point
memset (fnamestr,0, 1024);
memcpy (FNAMESTR, [Newstr cstringusingencoding:nsunicodestringencoding], ([newstr length])); Turn into byte (Unicode way)
NSData *newdata = [NSData datawithbytes:fnamestr length:2* ([newstr length])];
[NewData Getbytes:buf];
len = [NewData length];
return Len;
}

2. NSString the way to remove control characters (including carriage return, \ T, etc.)

nsstring* str =@ ' China

";

nsstring* TEMPSTR = [[str stringbytrimmingcharactersinset:[nscharacterset controlcharacterset]

Cancel space before and after

nsstring* str =@ ' China ';

nsstring* TEMPSTR = [[str stringbytrimmingcharactersinset:[nscharacterset whitespaceandnewlinecharacterset]