Question

I have an error File::tell() shown in XCode, using Unrar4iOS Framework, when I am calling the method:

-(NSArray)unrarListFiles;

the compiler shows me the a bunch of errors, where the last from stack is ftell, if someone knows, the origin if where probabily i am wrong, plese reply…
the full procedure what i want to do is to extrat the int number of files archived, from code below:

int nuberOfPages = 0;
NSLog(@"Filepath: %@", filePath);
Unrar4iOS *_unrar = [[Unrar4iOS alloc] init];
BOOL ok = [_unrar unrarOpenFile:filePath];
if (ok) {

    NSArray *files = [_unrar unrarListFiles];
    for (NSString *filename in files) {
        NSLog(@"File: %@", filename);
    }
    nuberOfPages = files.count;

    [unrar unrarCloseFile];
} else {
    [unrar unrarCloseFile];
}
[_unrar release];
return nuberOfPages;

Answer 1

this is because that.
in source code.

-(BOOL) unrarOpenFile:(NSString*)rarFile



-(BOOL) unrarCloseFile

the function above. they did not do anything.

this function do real open and real close;

-(NSArray *) unrarListFiles {
int RHCode = 0, PFCode = 0;

    //here  if you opened a file that is not rar.
    //this function RARReadHeaderEx will EXC_BAD_ACCESS (SIGSEGV)
    //so, you can check it return value
[self _unrarOpenFile:filename mode:RAR_OM_LIST];

NSMutableArray *files = [NSMutableArray array];
while ((RHCode = RARReadHeaderEx(_rarFile, header)) == 0) {
    NSString *_filename = [NSString stringWithCString:header->FileName encoding:NSASCIIStringEncoding];
    [files addObject:_filename];

    if ((PFCode = RARProcessFile(_rarFile, RAR_SKIP, NULL, NULL)) != 0) {
        [self _unrarCloseFile];
        return nil;
    }
}

[self _unrarCloseFile];
return files;

}