#!/usr/bin/php
<?php

$SKIP = array('.', '..');
$TARGET = './';

header("Content-Type: text/plain");

$DEP = array();

function scanfile($parent, $file)
{
	global $DEP;
	if ($fd = @fopen("$parent$file", "r"))
	{
		$DEP[$file] = array();
		while ($buffer = fgets($fd, 4096))
		{
			if (preg_match("/^(?:\s*?)#include(?:\s*?)\"(.*?)\"/", $buffer, $match))
			{
				$DEP[$file][] = $match[1];
			}
		}
	}
}

function scandir($parent = "./")
{
	global $SKIP;
	if ($dir = @opendir($parent)) 
	{
	  while (($file = readdir($dir)) !== false) 
	  {
	  	if (in_array($file, $SKIP)) { }
    	elseif (is_dir($file)) scandir("$parent$file/");
    	elseif (preg_match("/.?pp$/", $file)) scanfile($parent, $file);
  	}  
  	closedir($dir);
	}
}

function expand($files, $done=array())
{
	global $DEP;
	if (empty($files)) return $files;
	foreach ($files as $file)
	{
		if (!in_array($file, $done))
		{
			$files = array_merge($files, expand($DEP[$file], $done));
			$done[] = $file;
		}
	}
	$files = array_unique($files);
	return $files;
}

if (empty($TARGET)) $TARGET='./';

scandir($TARGET);

if (!empty($DEP)) foreach ($DEP as $name=>$deps)
{
	if (preg_match("/^(.*?).([ch]?pp)$/", $name, $match))
	{
		if ($match[2]=='cpp') echo "$match[1].o : $name";
		else echo "$match[1].$match[2] :";
		foreach (expand($deps) as $d) echo " $d";
		echo "\n";
	}
}

?>