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class IO::Stapled

Overview

This class staples together two unidirectional IOs to form a single, bidirectional IO.

Example (loopback):

io = IO::Stapled.new(*IO.pipe)
io.puts "linus"
io.gets # => "linus"

Most methods simply delegate to the underlying IOs.

Defined in:

io/stapled.cr

Constructors

Class Method Summary

Instance Method Summary

Instance methods inherited from class IO

<self <<, close close, closed? closed?, each_byte(&) : Nil
each_byte each_byte, each_char(&) : Nil
each_char each_char, each_line(*args, **options, &block : String -> ) : 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 : _) : Nil
print(obj) : Nil print, printf(format_string, *args) : Nil
printf(format_string, args : Array | Tuple) : Nil printf, puts(*objects : _) : Nil
puts : Nil
puts(obj) : Nil
puts(string : String) : Nil puts, read(slice : Bytes) read, read_at(offset, bytesize, &) 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) : Int64
copy(src, dst) : Int64 copy, pipe(read_blocking = false, write_blocking = false) : Tuple(IO::FileDescriptor, IO::FileDescriptor)
pipe(read_blocking = false, write_blocking = false, &) pipe, same_content?(stream1 : IO, stream2 : IO) same_content?

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

! : Bool !, !=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash, in?(*values : Object) : Bool
in?(collection) : Bool in?, inspect : String
inspect(io : IO) : Nil inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO)
to_json to_json, to_pretty_json(io : IO, indent : String = " ")
to_pretty_json(indent : String = " ") to_pretty_json, to_s : String
to_s(io : IO) : Nil to_s, to_yaml(io : IO)
to_yaml to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as

Class methods inherited from class Object

from_json(string_or_io, root : String)
from_json(string_or_io) from_json, from_yaml(string_or_io : String | IO) from_yaml

Constructor Detail

def self.new(reader : IO, writer : IO, sync_close : Bool = false)Source

Creates a new IO::Stapled which reads from reader and writes to writer.

Class Method Detail

def self.pipe(read_blocking : Bool = false, write_blocking : Bool = false, &)Source

Creates a pair of bidirectional pipe endpoints connected with each other and passes them to the given block.

Both endpoints and the underlying IOs are closed after the block (even if #sync_close? is false).

def self.pipe(read_blocking : Bool = false, write_blocking : Bool = false) : Tuple(self, self)Source

Creates a pair of bidirectional pipe endpoints connected with each other and returns them in a Tuple.

Instance Method Detail

def close : NilSource

Closes this IO.

If #sync_close? is true, it will also close the underlying IOs.

def closed? : BoolSource

Returns true if this IO is closed.

Underlying IOs might have a different status.

def flush : selfSource

Flushes writer.

def gets(delimiter : Char, limit : Int, chomp = false) : String?Source

Gets a string from reader.

def peek : Bytes?Source

Peeks into reader.

def read(slice : Bytes)Source

Reads a slice from reader.

def read_byte : UInt8?Source

Reads a single byte from reader.

def skip(bytes_count : Int) : NilSource

Skips reader.

def skip_to_end : NilSource

Skips reader.

def sync_close=(sync_close : Bool)Source

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

def sync_close? : BoolSource

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

def write(slice : Bytes) : NilSource

Writes a slice to writer.

def write_byte(byte : UInt8)Source

Writes a byte to writer.

© 2012–2020 Manas Technology Solutions.
Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/0.35.1/IO/Stapled.html