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ISO
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ISO
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検索結果
先頭5件
-
ARGF (8002.0)
-
スクリプトに指定した引数 ([m:Object::ARGV] を参照) をファイル名とみなして、それらのファイルを連結した 1 つの仮想ファイルを表すオブジェクトです。 ARGV が空なら標準入力を対象とします。 ARGV を変更すればこのオブジェクトの動作に影響します。
スクリプトに指定した引数
([m:Object::ARGV] を参照) をファイル名とみなして、それらのファイルを連結した 1 つの仮想ファイルを表すオブジェクトです。
ARGV が空なら標準入力を対象とします。
ARGV を変更すればこのオブジェクトの動作に影響します。
```ruby
while line = ARGF.gets
# do something
end
```
は、
```ruby
while argv = ARGV.shift
File.open(argv) {|file|
while line = file.gets
# do somet... -
ARGF
. class (8002.0) -
[c:ARGF] を表すクラスです。
[c:ARGF] を表すクラスです。 -
ARGF
. class # argv -> Array (8002.0) -
{: since="1.9.1"}
{: since="1.9.1"}
[m:Object::ARGV] を返します。
ARGF が ARGV をどう扱うかについては [c:ARGF] を参照してください。
例:
```console
$ ruby argf.rb -v glark.txt
ARGF.argv #=> ["-v", "glark.txt"]
``` -
ARGF
. class # binmode -> self (8002.0) -
{: since=""}
{: since=""}
self をバイナリモードにします。一度バイナリモードになった後は非バイナリモードに戻る事はできません。
バイナリモード下では以下のように動作します。
- 改行の変換を停止する
- 文字エンコーディングの変換を停止する
- 内容を ASCII-8BIT として扱う
```ruby title="例"
# test1.png - 164B
# test2.png - 128B
# test1.png + test2.png = 292B
# $ ruby test.rb test1.png test2.png
ARGF.binmode
p ARGF.read... -
ARGF
. class # binmode? -> bool (8002.0) -
{: since="1.9.1"}
{: since="1.9.1"}
ARGF の入力ストリームがバイナリモードなら true を返します。
そうでない場合、false を返します。
バイナリモードにするためには [m:ARGF.class#binmode] を使用します。
```ruby
p ARGF.binmode? # => false
ARGF.binmode
p ARGF.binmode? # => true
```
- **SEE** [m:IO#binmode?], [m:ARGF.class#binmode] -
ARGF
. class # close -> self (8002.0) -
{: since=""}
{: since=""}
現在開いている処理対象のファイルをクローズします。開くファイルが残っている場合は次のファイルをオープンします。
ただし、標準入力はクローズされません。
```console
$ echo "foo" > foo
$ echo "bar" > bar
$ ruby argf.rb foo bar
ARGF.filename # => "foo"
ARGF.close
ARGF.filename # => "bar"
ARGF.close
```
- **SEE** [m:ARGF.class#closed?] -
ARGF
. class # closed? -> bool (8002.0) -
{: since=""}
{: since=""}
現在開いている処理対象のファイルがARGFがcloseされていればtrueを返します。
```ruby title="例"
# $ echo "foo" > foo
# $ echo "bar" > bar
# $ ruby argf.rb foo bar
p ARGF.filename # => "foo"
ARGF.close
# 複数のファイルを開いているので1度のARGF.closeではまた全てのファイルを閉じていないのでfalseになる
p ARGF.closed? # => false
p ARGF.filename # => "bar"
ARG... -
ARGF
. class # each(rs = $ / ) -> Enumerator (8002.0) -
{: since=""}
{: since=""}
