stringWithContentsOfFile:usedEncoding:error:
Returns a string created by reading data from the file at a given path and returns by reference the encoding used to interpret the file.
Declaration
+ (instancetype) stringWithContentsOfFile:(NSString *) path usedEncoding:(NSStringEncoding *) enc error:(NSError **) error;Parameters
- path:
A path to a file.
- enc:
Upon return, if the file is read successfully, contains the encoding used to interpret the file at
path. For possible values, see Nsstringencoding. - error:
If an error occurs, upon returns contains an
NSErrorobject that describes the problem. If you are not interested in possible errors, you may pass inNULL.
Return Value
A string created by reading data from the file named by path. If the file can’t be opened or there is an encoding error, returns nil.
Discussion
This method attempts to determine the encoding of the file at path.