<?php
define("DQ_ESCAPE", "__DQ__");


function po2php_run(&$argv, &$argc) {

	if ($argc!=2) {
		print "Usage: ".$argv[0]." <file.po>\n\n";
		return;
	}

	$pofile = $argv[1];
	$outfile = dirname($pofile)."/strings.php";

	if (strstr($outfile, 'util')) {
		$lang = 'en';
	} else {
		$lang = str_replace('-','_',basename(dirname($pofile)));
	}

	if (!file_exists($pofile)) {
		print "Unable to find '$pofile'\n";
		return;
	}

	print "Out to '$outfile'\n";

	$out = "<?php\n\n";

	$infile = file($pofile);
	$k = "";
	$v = "";
	$arr = false;
	$ink = false;
	$inv = false;
	$escape_s_exp = '|[^\\\\]\$[a-z]|';
	function escape_s($match) {
		return str_replace('$','\$',$match[0]);
	}
	foreach ($infile as $l) {
		$l = str_replace('\"', DQ_ESCAPE, $l);
		$len = strlen($l);
		if ($l[0] == "#") {
			$l = "";
		}
		if (substr($l, 0, 15) == '"Plural-Forms: ') {
			$match = array();
			preg_match("|nplurals=([0-9]*); *plural=(.*)[;\\\\]|", $l, $match);
			$cond = str_replace('n', '$n', $match[2]);
			// define plural select function if not already defined
			$fnname = 'string_plural_select_' . $lang;
			$out .= 'if(! function_exists("' . $fnname . '")) {' . "\n";
			$out .= 'function '. $fnname . '($n){' . "\n";
			$out .= '	return ' . $cond . ';' . "\n";
			$out .= '}}' . "\n";
		}

		if ($k != "" && substr($l, 0, 7) == "msgstr ") {
			if ($ink) {
				$ink = false;
				$out .= '$a->strings["' . $k . '"] = ';
			}
			if ($inv) {
				$inv = false;
				$out .= '"' . $v . '"';
			}

			$v = substr($l, 8, $len - 10);
			$v = preg_replace_callback($escape_s_exp, 'escape_s', $v);
			$inv = true;
			//$out .= $v;
		}
		if ($k != "" && substr($l, 0, 7) == "msgstr[") {
			if ($ink) {
				$ink = false;
				$out .= '$a->strings["' . $k . '"] = ';
			}
			if ($inv) {
				$inv = false;
				$out .= '"' . $v . '"';
			}

			if (!$arr) {
				$arr=True;
				$out .= "array(\n";
			}
			$match = array();
			preg_match("|\[([0-9]*)\] (.*)|", $l, $match);
			$out .= "\t"
				. preg_replace_callback($escape_s_exp, 'escape_s', $match[1])
				. " => "
				. preg_replace_callback($escape_s_exp, 'escape_s', $match[2])
				. ",\n";
		}

		if (substr($l, 0, 6) == "msgid_") {
			$ink = false;
			$out .= '$a->strings["' . $k . '"] = ';
		}

		if ($ink) {
			$k .= trim($l, "\"\r\n");
			$k = preg_replace_callback($escape_s_exp, 'escape_s', $k);
			//$out .= '$a->strings['.$k.'] = ';
		}

		if (substr($l, 0, 6) == "msgid ") {
			if ($inv) {
				$inv = false;
				$out .= '"' . $v . '"';
			}
			if ($k != "") {
				$out .= ($arr) ? ");\n" : ";\n";
			}
			$arr = false;
			$k = str_replace("msgid ", "", $l);
			if ($k != '""') {
				$k = trim($k, "\"\r\n");
			} else {
				$k = "";
			}

			$k = preg_replace_callback($escape_s_exp, 'escape_s', $k);
			$ink = true;
		}

		if ($inv && substr($l, 0, 6) != "msgstr") {
			$v .= trim($l, "\"\r\n");
			$v = preg_replace_callback($escape_s_exp, 'escape_s', $v);
			//$out .= '$a->strings['.$k.'] = ';
		}


	}

	if ($inv) {
		$inv = false;
		$out .= '"' . $v . '"';
	}
	if ($k != "") {
		$out .= ($arr ? ");\n" : ";\n");
	}

	$out = str_replace(DQ_ESCAPE, '\"', $out);
	file_put_contents($outfile, $out);

}

if (array_search(__FILE__, get_included_files()) === 0) {
	po2php_run($_SERVER["argv"],$_SERVER["argc"]);
}
