Structure
A UEF file consists of a fixed length header that identifies itself, followed by a linked list of chunks containing the data of interest. The header comprises the magic string UEF File!, a terminating null character, and the two-byte version number of the UEF specification in use. A reading application needs to pay attention to the version number, as the unit of measurement in some chunks differs according to the specification version, and one chunk has been redefined between versions.
Each chunk consists of a two-byte ID which determines its meaning, the length of the body in four bytes, and the body itself. An application can readily skip the bodies of chunks it does not need to process. After the last chunk the file simply ends. Currently, UEF chunks do not nest.
The whole UEF file, including the header, may optionally be compressed in gzip format. By examining the start of the file for a gzip or UEF header, a decompression library can be invoked as appropriate.
Read more about this topic: Unified Emulator Format
Famous quotes containing the word structure:
“It is difficult even to choose the adjective
For this blank cold, this sadness without cause.
The great structure has become a minor house.
No turban walks across the lessened floors.
The greenhouse never so badly needed paint.”
—Wallace Stevens (1879–1955)
“A committee is organic rather than mechanical in its nature: it is not a structure but a plant. It takes root and grows, it flowers, wilts, and dies, scattering the seed from which other committees will bloom in their turn.”
—C. Northcote Parkinson (1909–1993)
“Agnosticism is a perfectly respectable and tenable philosophical position; it is not dogmatic and makes no pronouncements about the ultimate truths of the universe. It remains open to evidence and persuasion; lacking faith, it nevertheless does not deride faith. Atheism, on the other hand, is as unyielding and dogmatic about religious belief as true believers are about heathens. It tries to use reason to demolish a structure that is not built upon reason.”
—Sydney J. Harris (1917–1986)