Source

Conformances

• protocol BytestreamSource

  A source bytestream.

Type members

• static func open<R>(path: String, (inout `Self`) throws -> R) rethrows -> R?

  Calls a closure with an interface for reading from the specified file.

Instance members

• var count: Int?

  The size of the file, in bytes, or nil if the file is not a regular file or a link to a file.

• func read(count: Int) -> [UInt8]?

  Reads the specified number of bytes from this file interface.

Instance features

• func chunk() throws -> (type: PNG.Chunk, data: [UInt8])

  Lexes a chunk from this bytestream.

• func signature() throws

  Lexes the eight PNG signature bytes from this bytestream.