Module tectonic_bundles::itar

The web-friendly “indexed tar” bundle backend.

The main type offered by this module is the IndexedTarBackend struct, which cannot be used directly as a tectonic_io_base::IoProvider but is the default backend for cached web-based bundle access through the crate::cache::CachingBundle framework.

While the on-server file format backing the “indexed tar” backend is indeed a standard tar file, as far as the client is concerned, this backend is centered on HTTP byte-range requests. For each file contained in the backing resource, the index file merely contains a byte offset and length that are then used to construct an HTTP Range request to obtain the file as needed.

Structs

• FileInfo
  The internal file-information struct used by the IndexedTarBackend.
• IndexedTarBackend
  A simple web-based file backend based on HTTP Range requests.