| Current Path : /usr/local/share/ri/1.8/system/IO/ |
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| Current File : //usr/local/share/ri/1.8/system/IO/cdesc-IO.yaml |
--- !ruby/object:RI::ClassDescription
attributes: []
class_methods:
- !ruby/object:RI::MethodSummary
name: for_fd
- !ruby/object:RI::MethodSummary
name: foreach
- !ruby/object:RI::MethodSummary
name: new
- !ruby/object:RI::MethodSummary
name: new
- !ruby/object:RI::MethodSummary
name: open
- !ruby/object:RI::MethodSummary
name: pipe
- !ruby/object:RI::MethodSummary
name: popen
- !ruby/object:RI::MethodSummary
name: read
- !ruby/object:RI::MethodSummary
name: readlines
- !ruby/object:RI::MethodSummary
name: select
- !ruby/object:RI::MethodSummary
name: sysopen
comment:
- !ruby/struct:SM::Flow::P
body: Class <tt>IO</tt> is the basis for all input and output in Ruby. An I/O stream may be <em>duplexed</em> (that is, bidirectional), and so may use more than one native operating system stream.
- !ruby/struct:SM::Flow::P
body: Many of the examples in this section use class <tt>File</tt>, the only standard subclass of <tt>IO</tt>. The two classes are closely associated.
- !ruby/struct:SM::Flow::P
body: As used in this section, <em>portname</em> may take any of the following forms.
- !ruby/object:SM::Flow::LIST
contents:
- !ruby/struct:SM::Flow::LI
label: "*"
body: A plain string represents a filename suitable for the underlying operating system.
- !ruby/struct:SM::Flow::LI
label: "*"
body: A string starting with ``<tt>|</tt>'' indicates a subprocess. The remainder of the string following the ``<tt>|</tt>'' is invoked as a process with appropriate input/output channels connected to it.
- !ruby/struct:SM::Flow::LI
label: "*"
body: A string equal to ``<tt>|-</tt>'' will create another Ruby instance as a subprocess.
type: :BULLET
- !ruby/struct:SM::Flow::P
body: "Ruby will convert pathnames between different operating system conventions if possible. For instance, on a Windows system the filename ``<tt>/gumby/ruby/test.rb</tt>'' will be opened as ``<tt>\\gumby\\ruby\\test.rb</tt>''. When specifying a Windows-style filename in a Ruby string, remember to escape the backslashes:"
- !ruby/struct:SM::Flow::VERB
body: " "c:\\gumby\\ruby\\test.rb"\n"
- !ruby/struct:SM::Flow::P
body: Our examples here will use the Unix-style forward slashes; <tt>File::SEPARATOR</tt> can be used to get the platform-specific separator character.
- !ruby/struct:SM::Flow::P
body: I/O ports may be opened in any one of several different modes, which are shown in this section as <em>mode</em>. The mode may either be a Fixnum or a String. If numeric, it should be one of the operating system specific constants (O_RDONLY, O_WRONLY, O_RDWR, O_APPEND and so on). See man open(2) for more information.
- !ruby/struct:SM::Flow::P
body: If the mode is given as a String, it must be one of the values listed in the following table.
- !ruby/struct:SM::Flow::VERB
body: " Mode | Meaning\n -----+--------------------------------------------------------\n "r" | Read-only, starts at beginning of file (default mode).\n -----+--------------------------------------------------------\n "r+" | Read-write, starts at beginning of file.\n -----+--------------------------------------------------------\n "w" | Write-only, truncates existing file\n | to zero length or creates a new file for writing.\n -----+--------------------------------------------------------\n "w+" | Read-write, truncates existing file to zero length\n | or creates a new file for reading and writing.\n -----+--------------------------------------------------------\n "a" | Write-only, starts at end of file if file exists,\n | otherwise creates a new file for writing.\n -----+--------------------------------------------------------\n "a+" | Read-write, starts at end of file if file exists,\n | otherwise creates a new file for reading and\n | writing.\n -----+--------------------------------------------------------\n "b" | (DOS/Windows only) Binary file mode (may appear with\n | any of the key letters listed above).\n"
- !ruby/struct:SM::Flow::P
body: The global constant ARGF (also accessible as $<) provides an IO-like stream which allows access to all files mentioned on the command line (or STDIN if no files are mentioned). ARGF provides the methods <tt>#path</tt> and <tt>#filename</tt> to access the name of the file currently being read.
constants:
- !ruby/object:RI::Constant
comment:
name: SEEK_SET
value: INT2FIX(SEEK_SET)
- !ruby/object:RI::Constant
comment:
name: SEEK_CUR
value: INT2FIX(SEEK_CUR)
- !ruby/object:RI::Constant
comment:
name: SEEK_END
value: INT2FIX(SEEK_END)
full_name: IO
includes:
- !ruby/object:RI::IncludedModule
name: Enumerable
- !ruby/object:RI::IncludedModule
name: File::Constants
instance_methods:
- !ruby/object:RI::MethodSummary
name: "<<"
- !ruby/object:RI::MethodSummary
name: binmode
- !ruby/object:RI::MethodSummary
name: block_scanf
- !ruby/object:RI::MethodSummary
name: bytes
- !ruby/object:RI::MethodSummary
name: chars
- !ruby/object:RI::MethodSummary
name: close
- !ruby/object:RI::MethodSummary
name: close_read
- !ruby/object:RI::MethodSummary
name: close_write
- !ruby/object:RI::MethodSummary
name: closed?
- !ruby/object:RI::MethodSummary
name: each
- !ruby/object:RI::MethodSummary
name: each_byte
- !ruby/object:RI::MethodSummary
name: each_char
- !ruby/object:RI::MethodSummary
name: each_line
- !ruby/object:RI::MethodSummary
name: eof
- !ruby/object:RI::MethodSummary
name: eof?
- !ruby/object:RI::MethodSummary
name: fcntl
- !ruby/object:RI::MethodSummary
name: fileno
- !ruby/object:RI::MethodSummary
name: flush
- !ruby/object:RI::MethodSummary
name: fsync
- !ruby/object:RI::MethodSummary
name: getbyte
- !ruby/object:RI::MethodSummary
name: getc
- !ruby/object:RI::MethodSummary
name: gets
- !ruby/object:RI::MethodSummary
name: inspect
- !ruby/object:RI::MethodSummary
name: ioctl
- !ruby/object:RI::MethodSummary
name: isatty
- !ruby/object:RI::MethodSummary
name: lineno
- !ruby/object:RI::MethodSummary
name: lineno=
- !ruby/object:RI::MethodSummary
name: lines
- !ruby/object:RI::MethodSummary
name: pid
- !ruby/object:RI::MethodSummary
name: pos
- !ruby/object:RI::MethodSummary
name: pos=
- !ruby/object:RI::MethodSummary
name: print
- !ruby/object:RI::MethodSummary
name: printf
- !ruby/object:RI::MethodSummary
name: putc
- !ruby/object:RI::MethodSummary
name: puts
- !ruby/object:RI::MethodSummary
name: read
- !ruby/object:RI::MethodSummary
name: read_nonblock
- !ruby/object:RI::MethodSummary
name: readbyte
- !ruby/object:RI::MethodSummary
name: readbytes
- !ruby/object:RI::MethodSummary
name: readchar
- !ruby/object:RI::MethodSummary
name: readline
- !ruby/object:RI::MethodSummary
name: readlines
- !ruby/object:RI::MethodSummary
name: readpartial
- !ruby/object:RI::MethodSummary
name: reopen
- !ruby/object:RI::MethodSummary
name: rewind
- !ruby/object:RI::MethodSummary
name: scanf
- !ruby/object:RI::MethodSummary
name: seek
- !ruby/object:RI::MethodSummary
name: soak_up_spaces
- !ruby/object:RI::MethodSummary
name: stat
- !ruby/object:RI::MethodSummary
name: sync
- !ruby/object:RI::MethodSummary
name: sync=
- !ruby/object:RI::MethodSummary
name: sysread
- !ruby/object:RI::MethodSummary
name: sysseek
- !ruby/object:RI::MethodSummary
name: syswrite
- !ruby/object:RI::MethodSummary
name: tell
- !ruby/object:RI::MethodSummary
name: to_i
- !ruby/object:RI::MethodSummary
name: to_io
- !ruby/object:RI::MethodSummary
name: tty?
- !ruby/object:RI::MethodSummary
name: ungetc
- !ruby/object:RI::MethodSummary
name: write
- !ruby/object:RI::MethodSummary
name: write_nonblock
name: IO
superclass: Object