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Top Forums Shell Programming and Scripting Sed in vi - \r and \n not giving desired results Post 302533453 by DGPickett on Thursday 23rd of June 2011 04:29:59 PM
Old 06-23-2011
sed matches newlines, which sed puts in the buffer with s or N:
Code:
$ echo 'x
y' | sed '
  N
  /\n/p
  s/.*/line1\
line2/
  /\n/p
  s/\n/&&&&/
  p
  s/\n/\\n/g
 '
x
y
line1
line2
line1
 
 
 
line2
line1\n\n\n\nline2


Last edited by DGPickett; 06-23-2011 at 05:35 PM..
 

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STREAM_WRAPPER_REGISTER(3)						 1						STREAM_WRAPPER_REGISTER(3)

stream_wrapper_register - Register a URL wrapper implemented as a PHP class

SYNOPSIS
bool stream_wrapper_register (string $protocol, string $classname, [int $flags]) DESCRIPTION
Allows you to implement your own protocol handlers and streams for use with all the other filesystem functions (such as fopen(3), fread(3) etc.). PARAMETERS
o $protocol - The wrapper name to be registered. o $classname - The classname which implements the $protocol. o $flags - Should be set to STREAM_IS_URL if $protocol is a URL protocol. Default is 0, local stream. RETURN VALUES
Returns TRUE on success or FALSE on failure. stream_wrapper_register(3) will return FALSE if the $protocol already has a handler. CHANGELOG
+--------+------------------------------+ |Version | | | | | | | Description | | | | +--------+------------------------------+ | 5.2.4 | | | | | | | Added the $flags parameter. | | | | +--------+------------------------------+ EXAMPLES
Example #1 How to register a stream wrapper <?php $existed = in_array("var", stream_get_wrappers()); if ($existed) { stream_wrapper_unregister("var"); } stream_wrapper_register("var", "VariableStream"); $myvar = ""; $fp = fopen("var://myvar", "r+"); fwrite($fp, "line1 "); fwrite($fp, "line2 "); fwrite($fp, "line3 "); rewind($fp); while (!feof($fp)) { echo fgets($fp); } fclose($fp); var_dump($myvar); if ($existed) { stream_wrapper_restore("var"); } ?> The above example will output: line1 line2 line3 string(18) "line1 line2 line3 " SEE ALSO
The "streamWrapper" prototype class, "Example class registered as stream wrapper", stream_wrapper_unregister(3), stream_wrapper_restore(3), stream_get_wrappers(3). PHP Documentation Group STREAM_WRAPPER_REGISTER(3)
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