class Zstd::Compress::IO

• Zstd::Compress::IO
• IO
• Reference
• Object

Defined in:

Constant Summary

OUTPUT_BUFFER_SIZE = Lib.c_stream_out_size.to_i

Constructors

• .new(io : ::IO, level : Int32 = LEVEL_DEFAULT, *, output_buffer : Bytes | Nil = nil)

  output_buffer: If provided should be OUTPUT_BUFFER_SIZE bytes.

Class Method Summary

• .open(io, level : Int32 = LEVEL_DEFAULT, *, output_buffer : Bytes | Nil = nil, &)

Instance Method Summary

• #checksum(*args, **options)
• #checksum(*args, **options, &)
• #checksum=(arg)
• #close : Nil

  Closes this IO.

• #closed? : Bool

  Returns true if this writer is closed.

• #level(*args, **options)

  Compression level (0..22)

• #level(*args, **options, &)

  Compression level (0..22)

• #level=(arg)

  Compression level (0..22)

• #read(slice : Bytes)

  Reads at most slice.size bytes from this IO into slice.

• #sync_close=(sync_close : Bool)

  Whether to close the enclosed IO when closing this writer.

• #sync_close? : Bool

  Whether to close the enclosed IO when closing this writer.

• #threads(*args, **options)
• #threads(*args, **options, &)
• #threads=(arg)
• #write(slice : Bytes) : Nil

  Writes the contents of slice into this IO.

Constructor Detail

Class Method Detail

Instance Method Detail

io = IO::Memory.new "hello"
slice = Bytes.new(4)
io.read(slice) # => 4
slice          # => Bytes[104, 101, 108, 108]
io.read(slice) # => 1
slice          # => Bytes[111, 101, 108, 108]
io.read(slice) # => 0

io = IO::Memory.new
slice = Bytes.new(4) { |i| ('a'.ord + i).to_u8 }
io.write(slice)
io.to_s # => "abcd"