Garbage at the end of `NSString` on xCode after calling the stringByReplacingCharactersInRange` method
I am using the following code to replace the file extension:
NSString *fileOriginal = [url lastPathComponent];
NSString *fileSource = @"";
NSRange range = [fileOriginal rangeOfString:@"." options:NSBackwardsSearch];
if (range.length > 0) {
range.length = fileOriginal.length - range.location;
fileSource = [fileOriginal stringByReplacingCharactersInRange:range withString:[NSString stringWithFormat:@".%@", @"cpp"]];
} else {
fileSource = [fileOriginal stringByAppendingString:[NSString stringWithFormat:@".%@", gFileExtension]];
}
The code works fine. But the debugger shows garbage at the end NSString
:
Same result if I tried adding retain
to lines. What happened?
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1 answer
Assuming your definition is gFileExtension
valid, why not try this:
NSString *fileSource;
if ([[fileOriginal pathExtension] length] > 0)
{
fileSource = [[fileOriginal stringByDeletingPathExtension] stringByAppendingPathExtension:gFileExtension];
}
else
{
fileSource = [fileOriginal stringByAppendingPathExtension:gFileExtension];
}
By using the path handling built in NSString
, you don't need to worry about the point; it's done for you.
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