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.
Defined in:
flate/writer.crConstructors
-
.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.
Class Method Summary
-
.open(io : IO, level : Int32 = Flate::DEFAULT_COMPRESSION, strategy : Flate::Strategy = Flate::Strategy::DEFAULT, sync_close : Bool = false, dict : Bytes? = nil, &block)
Creates a new writer for the given io, yields it to the given block, and closes it at its end.
Instance Method Summary
-
#close
Closes this writer.
-
#closed? : Bool
Returns
true
if this IO is closed. -
#flush
See
IO#flush
. - #read(slice : Bytes)
-
#sync_close=(sync_close : Bool)
If
#sync_close?
istrue
, closing this IO will close the underlying IO. -
#sync_close? : Bool
If
#sync_close?
istrue
, closing this IO will close the underlying IO. -
#write(slice : Bytes)
See
IO#write
.
Instance methods inherited from class IO
<<(obj) : self
<<,
close
close,
closed?
closed?,
each_byte(&block) : Nileach_byte 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(delimiter : Char, limit : Int, chomp = false) : String?
gets(delimiter : Char, chomp = false) : String?
gets(chomp = true) : String?
gets(limit : Int, chomp = false) : String?
gets(delimiter : String, chomp = false) : String? gets, gets_to_end : String gets_to_end, peek : Bytes? peek, pos pos, pos=(value) pos=, print(*objects : UNDERSCORE) : Nil
print(obj) : Nil print, printf(format_string, *args) : Nil
printf(format_string, args : Array | Tuple) : Nil printf, puts(*objects : UNDERSCORE) : Nil
puts : Nil
puts(obj) : Nil
puts(string : String) : Nil puts, read(slice : Bytes) read, read_at(offset, bytesize, &block) read_at, 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, seek(offset, whence : Seek = Seek::Set) seek, set_encoding(encoding : String, invalid : Symbol? = nil) set_encoding, skip(bytes_count : Int) : Nil skip, skip_to_end : Nil skip_to_end, tell tell, 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 class IO
copy(src, dst, limit : Int)copy(src, dst) copy, pipe(read_blocking = false, write_blocking = false) : Tuple(IO::FileDescriptor, IO::FileDescriptor)
pipe(read_blocking = false, write_blocking = false, &block) pipe
Instance methods inherited from class Reference
==(other : self)==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==, dup dup, hash(hasher) 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
Constructor 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(hasher)
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, unsafe_as(type : T.class) forall T unsafe_as
Constructor methods inherited from class Object
from_json(string_or_io, root : String) : selffrom_json(string_or_io) : self from_json, from_yaml(string_or_io : String | IO) : self from_yaml
Constructor Detail
Creates an instance of Flate::Writer. #close
must be invoked after all data
has written.
Class Method Detail
Creates a new writer for the given io, yields it to the given block, and closes it at its end.
Instance Method Detail
If #sync_close?
is true
, closing this IO will close the underlying IO.
If #sync_close?
is true
, closing this IO will close the underlying IO.