Function unconcatenate_files 

pub fn unconcatenate_files(
    input: &mut File,
    infos: &[FileInfo],
    output_directory: &Path,
    overwrite: bool,
    progress_cb: impl FnMut(Progress<'_>),
) -> Result<()>

Splits the concatenated gzip input into separate files

After successfully returning, input will be positioned at the end of the last file.

Errors

If this function cannot ensure the existence of the output directory, an error will be returned.

Any form of I/O or other error encountered while extracting one file, causes progress_cb to be called with Progress::FileFailed.

Interruption by a signal instead causes progress_cb to be called with Progress::ProgressStep.