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Added support for overwriting existing symlinks

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Also added errors if these operations fail.
This commit is contained in:
Paulo Fierro
2017-06-22 12:57:32 -05:00
parent 3f6592687a
commit 1ff099811e
1 changed files with 22 additions and 1 deletions
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SSZipArchive/SSZipArchive.m
+22 -1
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@@ -464,13 +464,34 @@ NSString *const SSZipArchiveErrorDomain = @"SSZipArchiveErrorDomain";
[destinationPath appendString:@((const char*)buffer)];
}
// Check if the symlink exists and delete it if we're overwriting
if (overwrite)
{
if ([fileManager fileExistsAtPath:fullPath])
{
NSError *error = nil;
BOOL success = [fileManager removeItemAtPath:fullPath error:&error];
if (!success)
{
NSString *message = [NSString stringWithFormat:@"Failed to delete existing symbolic link at \"%@\"", error.localizedDescription];
NSLog(@"[SSZipArchive] %@", message);
success = NO;
unzippingError = [NSError errorWithDomain:SSZipArchiveErrorDomain code:error.code userInfo:@{NSLocalizedDescriptionKey: message}];
}
}
}
// Create the symbolic link (making sure it stays relative if it was relative before)
int symlinkError = symlink([destinationPath cStringUsingEncoding:NSUTF8StringEncoding],
[fullPath cStringUsingEncoding:NSUTF8StringEncoding]);
if (symlinkError != 0)
{
NSLog(@"Failed to create symbolic link at \"%@\" to \"%@\". symlink() error code: %d", fullPath, destinationPath, errno);
// Bubble the error up to the completion handler
NSString *message = [NSString stringWithFormat:@"Failed to create symbolic link at \"%@\" to \"%@\" - symlink() error code: %d", fullPath, destinationPath, errno];
NSLog(@"[SSZipArchive] %@", message);
success = NO;
unzippingError = [NSError errorWithDomain:NSPOSIXErrorDomain code:symlinkError userInfo:@{NSLocalizedDescriptionKey: message}];
}
}