andrewmackrodt/gdiff.php

## gdiff.php
#!/usr/bin/env php
<?php
function ansi2html($text) {
    return preg_replace('/\x1B\[m/', '', preg_replace_callback('/\x1B\[(\d+)m(.*?)\x1B\[m/m', function ($match) {
        switch ($match[1]) {
            case 31: $rgb = array(170, 0, 0); break;
            case 32: $rgb = array(0, 170, 0); break;
            case 36: $rgb = array(0, 170, 170); break;
            default: $rgb = array(0, 0, 0);
        }

        $rgb = implode(',', $rgb);
        $s = "<span style='color:rgb($rgb);'>{$match[2]}</span>";

        if ($match[1] == 1) {
            $s = "<b>$s</b>";
        }

        return $s;
    }, htmlspecialchars($text)));
}

function arg($k = '', $default = null) {
    if (empty($GLOBALS['argv'])) {
        return $default;
    }

    $args = implode("\0", array_slice($GLOBALS['argv'], 1));

    if ($k) {
        $keyRegex = preg_quote("-$k");

        if (preg_match("/(?:^|\\0)$keyRegex(?:=|\\0)?([^\\0]+)/", $args, $match)) {
            return $match[1];
        }
    } else {
        if (preg_match("/(?:^|\\0)([^\\0]+)$/", $args, $match)) {
            return $match[1];
        }
    }

    return $default;
}

function bash_exec($cmd, $_ = null) {
    $cmd = call_user_func_array('escapecmd', func_get_args());
    $cmd = call_user_func_array('escapecmd', array('bash -c %s', $cmd));

    return shell_exec($cmd);
}

function escapecmd($cmd, $_ = null) {
    $args = array($cmd);

    foreach (array_slice(func_get_args(), 1) as $arg) {
        if ($arg !== null && $arg !== false) {
            $arg = escapeshellarg($arg);
        }

        $args[] = $arg;
    }

    return call_user_func_array('sprintf', $args);
}

function line_numbers($html) {
    $i = 1;
    $buffer = "<table>\n";

    foreach (explode("\n", $html) as $line) {
        $buffer .= "<tr><td>$i</td><td>$line</td></tr>\n";
        $i++;
    }

    $buffer .= "</table>";

    return $buffer;
}

$folder  = realpath(arg(null, __DIR__));
$base    = arg('b', 'master');
$compare = arg('c', 'develop');
$isHtml  = arg('H') !== null;

if ($exclude = arg('e')) {
    $grep = '| grep -Ev %s';
} else {
    $grep = '%s';
    $exclude = null;
}

chdir($folder);

$diff = bash_exec(
    "git diff %s %s --name-only $grep | xargs git diff --color=always %s %s --",
    $base,
    $compare,
    $exclude,
    $base,
    $compare
);

if ($isHtml): ?>
<!doctype html><pre><?= line_numbers(ansi2html($diff)); ?></pre>
<?php else:
    echo $diff;
endif;
	#!/usr/bin/env php
	<?php
	function ansi2html($text) {
	return preg_replace('/\x1B\[m/', '', preg_replace_callback('/\x1B\[(\d+)m(.*?)\x1B\[m/m', function ($match) {
	switch ($match[1]) {
	case 31: $rgb = array(170, 0, 0); break;
	case 32: $rgb = array(0, 170, 0); break;
	case 36: $rgb = array(0, 170, 170); break;
	default: $rgb = array(0, 0, 0);
	}

	$rgb = implode(',', $rgb);
	$s = "<span style='color:rgb($rgb);'>{$match[2]}</span>";

	if ($match[1] == 1) {
	$s = "<b>$s</b>";
	}

	return $s;
	}, htmlspecialchars($text)));
	}

	function arg($k = '', $default = null) {
	if (empty($GLOBALS['argv'])) {
	return $default;
	}

	$args = implode("\0", array_slice($GLOBALS['argv'], 1));

	if ($k) {
	$keyRegex = preg_quote("-$k");

	if (preg_match("/(?:^\|\\0)$keyRegex(?:=\|\\0)?([^\\0]+)/", $args, $match)) {
	return $match[1];
	}
	} else {
	if (preg_match("/(?:^\|\\0)([^\\0]+)$/", $args, $match)) {
	return $match[1];
	}
	}

	return $default;
	}

	function bash_exec($cmd, $_ = null) {
	$cmd = call_user_func_array('escapecmd', func_get_args());
	$cmd = call_user_func_array('escapecmd', array('bash -c %s', $cmd));

	return shell_exec($cmd);
	}

	function escapecmd($cmd, $_ = null) {
	$args = array($cmd);

	foreach (array_slice(func_get_args(), 1) as $arg) {
	if ($arg !== null && $arg !== false) {
	$arg = escapeshellarg($arg);
	}

	$args[] = $arg;
	}

	return call_user_func_array('sprintf', $args);
	}

	function line_numbers($html) {
	$i = 1;
	$buffer = "<table>\n";

	foreach (explode("\n", $html) as $line) {
	$buffer .= "<tr><td>$i</td><td>$line</td></tr>\n";
	$i++;
	}

	$buffer .= "</table>";

	return $buffer;
	}

	$folder = realpath(arg(null, __DIR__));
	$base = arg('b', 'master');
	$compare = arg('c', 'develop');
	$isHtml = arg('H') !== null;

	if ($exclude = arg('e')) {
	$grep = '\| grep -Ev %s';
	} else {
	$grep = '%s';
	$exclude = null;
	}

	chdir($folder);

	$diff = bash_exec(
	"git diff %s %s --name-only $grep \| xargs git diff --color=always %s %s --",
	$base,
	$compare,
	$exclude,
	$base,
	$compare
	);

	if ($isHtml): ?>
	<!doctype html><pre><?= line_numbers(ansi2html($diff)); ?></pre>
	<?php else:
	echo $diff;
	endif;