class Flate::Writer

Overview

A write-only IO object to compress data in the DEFLATE format.

Instances of this class wrap another IO object. When you write to this instance, it compresses the data and writes it to the underlying IO.

NOTE unless created with a block, #close must be invoked after all data has been written to a Flate::Writer instance.

Included Modules

Defined in:

flate/writer.cr

Class Method Summary

Instance Method Summary

Instance methods inherited from module IO

<<(obj) : self <<, close close, closed? closed?, each_byte
each_byte(&block) : Nil
each_byte
, each_char(&block) : Nil
each_char
each_char
, each_line(*args, **options, &block) : Nil
each_line(*args, **options)
each_line
, encoding : String encoding, flush flush, gets(limit : Int, chomp = false) : String?
gets(delimiter : Char, chomp = false) : String?
gets(delimiter : String, chomp = false) : String?
gets(chomp = true) : String?
gets(delimiter : Char, limit : Int, chomp = false) : String?
gets
, gets_to_end : String gets_to_end, peek : Bytes? peek, print(*objects : _) : Nil
print(obj) : Nil
print
, printf(format_string, args : Array | Tuple) : Nil
printf(format_string, *args) : Nil
printf
, puts(*objects : _) : Nil
puts : Nil
puts(obj) : Nil
puts(string : String) : Nil
puts
, read(slice : Bytes) read, read_byte : UInt8? read_byte, read_bytes(type, format : IO::ByteFormat = IO::ByteFormat::SystemEndian) read_bytes, read_char : Char? read_char, read_fully(slice : Bytes) read_fully, read_fully?(slice : Bytes) read_fully?, read_line(*args, **options) : String? read_line, read_string(bytesize : Int) : String read_string, read_utf8(slice : Bytes) read_utf8, read_utf8_byte read_utf8_byte, rewind rewind, set_encoding(encoding : String, invalid : Symbol? = nil) set_encoding, skip(bytes_count : Int) : Nil skip, skip_to_end : Nil skip_to_end, tty? : Bool tty?, write(slice : Bytes) : Nil write, write_byte(byte : UInt8) write_byte, write_bytes(object, format : IO::ByteFormat = IO::ByteFormat::SystemEndian) write_bytes, write_utf8(slice : Bytes) write_utf8

Class methods inherited from module IO

copy(src, dst, limit : Int)
copy(src, dst)
copy
, pipe(read_blocking = false, write_blocking = false)
pipe(read_blocking = false, write_blocking = false, &block)
pipe

Instance methods inherited from class Reference

==(other : self)
==(other)
==
, dup dup, hash hash, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, pretty_print(pp) : Nil pretty_print, same?(other : Reference)
same?(other : Nil)
same?
, to_s(io : IO) : Nil to_s

Class methods inherited from class Reference

new new

Instance methods inherited from class Object

!=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other)
===
, =~(other) =~, class class, dup dup, hash hash, inspect(io : IO)
inspect
inspect
, itself itself, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, tap(&block) tap, to_json(io : IO)
to_json
to_json
, to_pretty_json(indent : String = " ")
to_pretty_json(io : IO, indent : String = " ")
to_pretty_json
, to_s
to_s(io : IO)
to_s
, to_yaml(io : IO)
to_yaml
to_yaml
, try(&block) try

Class methods inherited from class Object

from_json(string_or_io, root : String) : self
from_json(string_or_io) : self
from_json
, from_yaml(string_or_io) : self from_yaml

Class Method Detail

def self.new(output : IO, level : Int32 = Flate::DEFAULT_COMPRESSION, strategy : Flate::Strategy = Flate::Strategy::DEFAULT, sync_close : Bool = false, dict : Bytes? = nil) #

Creates an instance of Flate::Writer. #close must be invoked after all data has written.


[View source]
def self.new(output : IO, level : Int32 = Flate::DEFAULT_COMPRESSION, strategy : Flate::Strategy = Flate::Strategy::DEFAULT, sync_close : Bool = false, dict : Bytes? = nil, &block) #

Creates an instance of Flate::Writer, yields it to the given block, and closes it at its end.


[View source]

Instance Method Detail

def close #

Closes this writer. Must be invoked after all data has been written.


[View source]
def closed? : Bool #

Returns true if this IO is closed.


[View source]
def flush #

[View source]
def read(slice : Bytes) #

Always raises IO::Error because this is a write-only IO.


[View source]
def sync_close=(sync_close : Bool) #

If #sync_close? is true, closing this IO will close the underlying IO.


[View source]
def sync_close? : Bool #

If #sync_close? is true, closing this IO will close the underlying IO.


[View source]
def write(slice : Bytes) #

[View source]