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How to capture standart output to variable?

Maxim Zhukov

2/8/2009 8:08:00 PM

How to capture output of this code to variable to send it to iconv?
(Just like ob_start() in PHP)

# ???
p ["utf-8 string",[123,321],"another string"]
# ???
puts Iconv.conv("866","UTF-8",captured_output) # because of windows
console
--
Posted via http://www.ruby-....
3 Answers

Igor Pirnovar

2/8/2009 9:47:00 PM

0

Maxim Zhukov wrote:
> How to capture output of this code to variable to send it to iconv?
> (Just like ob_start() in PHP)
>
> # ???
> p ["utf-8 string",[123,321],"another string"]
> # ???
> puts Iconv.conv("866","UTF-8",captured_output) # because of windows
> console

This irb example may help:
+----------------------------------------------+
| >> pipe = IO.popen("echo 'drop him a line'") |
| => #<IO:0xb7a7b450> |
| >> capture = pipe.read |
| => "drop him a line\n" |
| >> puts capture |
| drop him a line |
| => nil |
| >> |
+----------------------------------------------+
--
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7stud --

2/8/2009 10:13:00 PM

0

Maxim Zhukov wrote:
> How to capture output of this code to variable to send it to iconv?
> (Just like ob_start() in PHP)
>
> # ???
> p ["utf-8 string",[123,321],"another string"]
> # ???
> puts Iconv.conv("866","UTF-8",captured_output) # because of windows
> console

You can send output to a string:

require "stringio"

strio = StringIO.new
strio.write("hello world")
strio.rewind()
puts strio.read()

old_out = $stdout
$stdout = strio

puts " goodbye"
$stdout = old_out

strio.rewind()
puts strio.read()

--output:--
hello world
hello world goodbye

--
Posted via http://www.ruby-....

Igor Pirnovar

2/9/2009 10:00:00 PM

0

7stud -- wrote:

> You can send output to a string:
>
> require "stringio"
> . . .

Do this with "stringio" ;)

+-----------------------------------------------+
| >> pipe = IO.popen("/usr/games/fortune") |
| => #<IO:0xb7a6f588> |
| >> capture = pipe.read |
| => "You have taken yourself too seriously.\n" |
| >> puts capture |
| You have taken yourself too seriously. |
| => nil |
| >> |
+-----------------------------------------------+
--
Posted via http://www.ruby-....