cfg-update_phphelper

#!/usr/bin/php -q
<?
/*
    Written 2005-09-18 (by GD)
    Updated 2005-09-21 15:45 GMT+1 (by GD)
        This script is used to replace the existing cfg-update solution
        wrapper solution with the purpouse of avoiding unnecessary
        waits/delays during emerge operations
    Updated 2005-12-31 03:08 GMT+2 (by S. van Boven)
        Removed "columns" from bl_fword array because this flag is used
        only in combination with --pretend, which is blocked already.
        Tested if this script could start the emerge command, but it
        turns out that it strips color from the emerge output when it
        is started with passthru(). So I made the wrapperscript start
        the emerge when this script is done...
        Slightly modified the output in case a blacklisted flag is found.
*/

/* Blacklisted flags (no packages can be merged with these flags present)
	--help (-h short option)
	--info
	--metadata
	--sync
	--search (-s short option)
	--changelog (-l short option)
	--fetchonly (-f short option)
	--fetch-all-uri
	--pretend (-p short option)
	--searchdesc (-S short option)
	--version (-V short option)
*/
/* Previous flags loaded into two arrays, one for short form other for full form. */
$bl_fword = array("help","info","metadata","sync","search","changelog","fetchonly","pretend","searchdesc","version");
$bl_sword = array("h","s","l","f","p","S","V");

/* &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& BEGINNING of required functions*/
/* check if a binary is in the users path with
   "which" this allows for non standard / non
   default directory structures */
function is_in_path($bin) {
        $path = trim(`which {$bin}`);
        if ((stristr($path,"no {$bin}")) || (!is_file($path))) { return false; }
        else { return $path; }
}

/* strstr modified to work with array needles
   and which returns the needle that was found
   or false if nothing was found. */
function better_strstr_rv($haystack,$needles) {
        if (is_array($needles)) {
                foreach($needles as $key=>$val) { if (strstr($haystack,$val)) { return $val; } }
                return false;
        }
        return strstr($haystack,$needles);
}
/* personalize the cfg-update output when
   running an emerge so it is recognizable
   for what it is. */
function output_msg($msg) {
	echo ">>> \033[1mcfg-update:\033[0m {$msg}\n";
}
/* &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& END of required functions */

/* &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& BEGINNING of actual processing */
// Go through all args looking for flags
foreach ($argv as $flag) {
	// Flags only begin with - or --
	if (preg_match("/^(-{1,2})([a-z]+)/i",$flag,$match)) {
		// Make sure no stagnant values can throw us off
		if (isset($fkey)) { unset($fkey); }
		// If the flag is a full word flag proceeded by --
		if (strlen($match[1]) > 1) {
			// Check if it is a blacklisted flag, in which case break the loop
			if ($fkey = better_strstr_rv($match[0],$bl_fword)) {
				$noindex = $match[0];
				break;
			}
			// Otherwise check the next one
			else { continue; }
		}
		// Must only have one -, check if it is a blacklisted flag, in which case break the loop
		elseif ($fkey = better_strstr_rv($match[0],$bl_sword)) {
			$noindex = $match[0];
			break;
		}
		// Otherwise check the next one
		else { continue; }
	}
}
// Check if the loop was broken and no index should be generated
if (isset($noindex)) {
//    output_msg("Skipping index update because of \"{$fkey}\" being found in \"{$noindex}\"...");
    $command = "emerge ".join(array_slice($argv,1)," ");
    output_msg("found \"-{$fkey}\", skipping index update...");
}
// Otherwise it is fine to generate a new index
elseif (is_in_path("cfg-update")) {
//	output_msg("No blacklisted flags found, updating index now.");
	passthru("cfg-update --index");
}
// Otherwise should have run cfg-update but couldn't find it.
else {
	output_msg("No blacklisted flags found, however cfg-update doesn't appear to be in your path and thus could not be executed to generate the index.");
	output_msg("If you have uninstalled cfg-update or wish to no longer see this message, please remove the emerge alias in /root/.bashrc !");
}
// The following is disabled because the script that calls this script will start emerge (no color output for php system() call!)
// $command = "emerge ".join(array_slice($argv,1)," ");
// passthru($command);
/* &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& END of actual processing and script */
?>