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#!/usr/bin/env php
<?php
// Command line utility to compile LESS to STDOUT
// Leaf Corcoran <leafot@gmail.com>, 2013

$exe = array_shift($argv); // remove filename

$HELP = <<<EOT
Usage: $exe [options] input-file [output-file]

Options include:

-h, --help  Show this message
    -v          Print the version
    -f=format   Set the output format, includes "default", "compressed"
    -c          Keep /* */ comments in output
    -r          Read from STDIN instead of input-file
    -w          Watch input-file, and compile to output-file if it is changed
    -T          Dump formatted parse tree
    -X          Dump raw parse tree

EOT;

$opts = getopt('hvrwncXTf:', array('help'));
while (count($argv) > 0 && preg_match('/^-([-hvrwncXT]$|[f]=)/', $argv[0])) {
	array_shift($argv);
}

function has() {
	global $opts;
	foreach (func_get_args() as $arg) {
		if (isset($opts[$arg])) return true;
	}
	return false;
}

if (has("h", "help")) {
	exit($HELP);
}

error_reporting(E_ALL);
$path  = realpath(dirname(__FILE__)).'/';

require $path."lessc.inc.php";

$VERSION = lessc::$VERSION;

$fa = "Fatal Error: ";
function err($msg) {
	fwrite(STDERR, $msg."\n");
}

if (php_sapi_name() != "cli") {
	err($fa.$argv[0]." must be run in the command line.");
	exit(1);
}

function make_less($fname = null) {
	global $opts;
	$l = new lessc($fname);

if (has("f")) {
		$format = $opts["f"];
		if ($format != "default") $l->setFormatter($format);
	}

if (has("c")) {
		$l->setPreserveComments(true);
	}

return $l;
}

function process($data, $import = null) {
	global $fa;

$l = make_less();
	if ($import) $l->importDir = $import;

try {
		echo $l->parse($data);
		exit(0);
	} catch (exception $ex) {
		err($fa."\n".str_repeat('=', 20)."\n".
			$ex->getMessage());
		exit(1);
	}
}

if (has("v")) {
	exit($VERSION."\n");
}

if (has("r")) {
	if (!empty($argv)) {
		$data = $argv[0];
	} else {
		$data = "";
		while (!feof(STDIN)) {
			$data .= fread(STDIN, 8192);
		}
	}
	exit(process($data));
}

if (has("w")) {
	// need two files
	if (!is_file($in = array_shift($argv)) ||
		null == $out = array_shift($argv))
	{
		err($fa.$exe." -w infile outfile");
		exit(1);
	}

echo "Watching ".$in.
		(has("n") ? ' with notifications' : '').
		", press Ctrl + c to exit.\n";

$cache = $in;
	$last_action = 0;
	while (true) {
		clearstatcache();

// check if anything has changed since last fail
		$updated = false;
		if (is_array($cache)) {
			foreach ($cache['files'] as $fname=>$_) {
				if (filemtime($fname) > $last_action) {
					$updated = true;
					break;
				}
			}
		} else $updated = true;

// try to compile it
		if ($updated) {
			$last_action = time();

try {
				$cache = lessc::cexecute($cache);
				echo "Writing updated file: ".$out."\n";
				if (!file_put_contents($out, $cache['compiled'])) {
					err($fa."Could not write to file ".$out);
					exit(1);
				}
			} catch (exception $ex) {
				echo "\nFatal Error:\n".str_repeat('=', 20)."\n".
					$ex->getMessage()."\n\n";

if (has("n")) {
					`notify-send -u critical "compile failed" "{$ex->getMessage()}"`;
				}
			}
		}

sleep(1);
	}
	exit(0);
}

if (!$fname = array_shift($argv)) {
	echo $HELP;
	exit(1);
}

$out = array();
		foreach ($node as $value) {
			$out[] = dumpValue($value, $depth);
		}
		return "{ ".implode(", ", $out)." }";
	} else {
		if (is_string($node) && preg_match("/[\s,]/", $node)) {
			return '"'.$node.'"';
		}
		return $node; // normal value
	}
}

function stripValue($o, $toStrip) {
	if (is_array($o) || is_object($o)) {
		$isObject = is_object($o);
		$o = (array)$o;
		foreach ($toStrip as $removeKey) {
			if (!empty($o[$removeKey])) {
				$o[$removeKey] = "*stripped*";
			}
		}

foreach ($o as $k => $v) {
			$o[$k] = stripValue($v, $toStrip);
		}

if ($isObject) {
			$o = (object)$o;
		}
	}

return $o;
}

function dumpWithoutParent($o, $alsoStrip=array()) {
	$toStrip = array_merge(array("parent"), $alsoStrip);
	print_r(stripValue($o, $toStrip));
}

try {
	$less = make_less($fname);
	if (has("T", "X")) {
		$parser = new lessc_parser($less, $fname);
		$tree = $parser->parse(file_get_contents($fname));
		if (has("X"))
			$out = print_r($tree, 1);
		else
			$out = dumpValue($tree)."\n";
	} else {
		$out = $less->parse();
	}

if (!$fout = array_shift($argv)) {
		echo $out;
	} else {
		file_put_contents($fout, $out);
	}

} catch (exception $ex) {
	err($fa.$ex->getMessage());
	exit(1);
}