Asterisk callfilter

callfilter.php.sh

#!/usr/bin/php
<?php 

/**
 * Error code when file was not found
 */
define('EXIT_NOTFOUND', 11);

require_once 'Console/CommandLine.php';

function getOptionsAndArguments() {
	$parser = new Console_CommandLine(array( 
		'description' => 'Show all application log file lines that contain a specific channel', 
		'version'   => '0.0.1', // the version of your program
	));

	$parser->addOption('after_context', array(
		'short_name' => '-A',
		'long_name' => '--after-context',
		'description' => 'Show NUM lines after lines with matching channel',
		'action' => 'StoreInt',
		'default' => 0
	));
	
	$parser->addOption('extended_regexp', array(
		'short_name' => '-E',
		'long_name' => '--extended-regexp',
		'description' => 'Use regexp syntax for pattern instead of searching for it as a plain string',
		'action' => 'StoreTrue',
		'default' => false
	));

	$parser->addArgument('pattern', array(
		'description' => 'String or Pattern to look for. The channel from lines that contain this pattern will be used for the subseqent searches.'
	));

	$parser->addArgument('inputfile', array(
		'description' => 'File to search. Defaults to STDIN',
		'optional' => true,
		'help_name' => '[inputfile]'
	));

	try {
		return $parser->parse();
	} catch (Exception $exc) {
		$parser->displayError($exc->getMessage());
	}
}

function getInputFile($inputfileName) {
	if($inputfileName) {
		if(is_readable($inputfileName))
		{
			$inputfile = fopen($inputfileName, 'r');
		}
		else {
			if(file_exists($inputfileName))
				echo "File $inputfileName is not readable.\n";
			else
				echo "File $inputfileName not found.\n";
			exit(EXIT_NOTFOUND);
		}
	}
	else {
		$inputfile = STDIN;
	}
	return $inputfile;
}

$options = getOptionsAndArguments();
$inputfile = getInputFile($options->args['inputfile']);

if($options->options['extended_regexp'])
	$pattern = str_replace('/', '\\/', $options->args['pattern']);
else
	$pattern = preg_quote($options->args['pattern'], '/');
$channel = '(SIP\/[-a-zA-Z0-9_.]+-[a-f0-9]+)';
$searchpattern = '/('.$channel.'.*'.$pattern.'|'.$pattern.'.*'.$channel.')/';
$afterContext = $options->options['after_context'];

$channelpattern = '';
$linecount = 1;
$lastLinematch = 0;
while(!feof($inputfile)) {
  $line = fgets($inputfile);
  if(preg_match($searchpattern, $line, $matches)) {
	if(count($matches) == 4)
		$channelpattern = "/".preg_quote($matches[3], '/').'/';
	else
		$channelpattern = "/".preg_quote($matches[2], '/').'/';
	//echo "pat=$pat\n";
  }
  if($channelpattern && preg_match($channelpattern, $line)) {
	  $lastLinematch = $linecount;
	  echo $line;
  }
  // Handle -A output
  elseif($lastLinematch && $lastLinematch + $afterContext >= $linecount) {
	  echo $line;
  }
  $linecount++;
}