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* This file is part of the Nette Framework (http://nette.org)
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* Copyright (c) 2004 David Grudl (http://davidgrudl.com)
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* For the full copyright and license information, please view
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* the file license.txt that was distributed with this source code.
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namespace Nette\Templating;
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private static $helpers = array(
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'normalize' => 'Nette\Utils\Strings::normalize',
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'toascii' => 'Nette\Utils\Strings::toAscii',
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'webalize' => 'Nette\Utils\Strings::webalize',
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'truncate' => 'Nette\Utils\Strings::truncate',
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'lower' => 'Nette\Utils\Strings::lower',
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'upper' => 'Nette\Utils\Strings::upper',
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'firstupper' => 'Nette\Utils\Strings::firstUpper',
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'capitalize' => 'Nette\Utils\Strings::capitalize',
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'trim' => 'Nette\Utils\Strings::trim',
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'padleft' => 'Nette\Utils\Strings::padLeft',
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'padright' => 'Nette\Utils\Strings::padRight',
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'reverse' => 'Nette\Utils\Strings::reverse',
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'replacere' => 'Nette\Utils\Strings::replace',
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'url' => 'rawurlencode',
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'striptags' => 'strip_tags',
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'substr' => 'Nette\Utils\Strings::substring',
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'repeat' => 'str_repeat',
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'implode' => 'implode',
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'number' => 'number_format',
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/** @var string default date format */
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public static $dateFormat = '%x';
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* Try to load the requested helper.
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* @param string helper name
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public static function loader($helper)
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if (method_exists(__CLASS__, $helper)) {
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return new Nette\Callback(__CLASS__, $helper);
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} elseif (isset(self::$helpers[$helper])) {
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return self::$helpers[$helper];
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* Escapes string for use inside HTML template.
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* @param mixed UTF-8 encoding
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* @param int optional attribute quotes
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public static function escapeHtml($s, $quotes = ENT_QUOTES)
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if (is_object($s) && ($s instanceof ITemplate || $s instanceof Html || $s instanceof Form)) {
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return $s->__toString(TRUE);
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return htmlSpecialChars($s, $quotes);
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* Escapes string for use inside HTML comments.
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* @param string UTF-8 encoding
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public static function escapeHtmlComment($s)
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return ' ' . str_replace('-', '- ', $s); // dash is very problematic character in comments
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* Escapes string for use inside XML 1.0 template.
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* @param string UTF-8 encoding
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public static function escapeXML($s)
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// XML 1.0: \x09 \x0A \x0D and C1 allowed directly, C0 forbidden
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// XML 1.1: \x00 forbidden directly and as a character reference,
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// \x09 \x0A \x0D \x85 allowed directly, C0, C1 and \x7F allowed as character references
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return htmlSpecialChars(preg_replace('#[\x00-\x08\x0B\x0C\x0E-\x1F]+#', '', $s), ENT_QUOTES);
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* Escapes string for use inside CSS template.
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* @param string UTF-8 encoding
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public static function escapeCss($s)
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// http://www.w3.org/TR/2006/WD-CSS21-20060411/syndata.html#q6
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return addcslashes($s, "\x00..\x1F!\"#$%&'()*+,./:;<=>?@[\\]^`{|}~");
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* Escapes variables for use inside <script>.
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* @param mixed UTF-8 encoding
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public static function escapeJs($s)
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if (is_object($s) && ($s instanceof ITemplate || $s instanceof Html || $s instanceof Form)) {
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$s = $s->__toString(TRUE);
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return str_replace(array(']]>', '<!'), array(']]\x3E', '\x3C!'), Nette\Utils\Json::encode($s));
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* Escapes string for use inside iCal template.
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* @param mixed UTF-8 encoding
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public static function escapeICal($s)
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// http://www.ietf.org/rfc/rfc5545.txt
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return addcslashes(preg_replace('#[\x00-\x08\x0B\x0C-\x1F]+#', '', $s), "\";\\,:\n");
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* Replaces all repeated white spaces with a single space.
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* @param string UTF-8 encoding or 8-bit
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public static function strip($s)
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return Strings::replace(
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'#(</textarea|</pre|</script|^).*?(?=<textarea|<pre|<script|\z)#si',
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return trim(preg_replace('#[ \t\r\n]+#', " ", $m[0]));
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* Indents the HTML content from the left.
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* @param string UTF-8 encoding or 8-bit
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public static function indent($s, $level = 1, $chars = "\t")
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$s = Strings::replace($s, '#<(textarea|pre).*?</\\1#si', function($m) {
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return strtr($m[0], " \t\r\n", "\x1F\x1E\x1D\x1A");
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$s = Strings::indent($s, $level, $chars);
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$s = strtr($s, "\x1F\x1E\x1D\x1A", " \t\r\n");
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* Date/time formatting.
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* @param string|int|DateTime
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public static function date($time, $format = NULL)
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if ($time == NULL) { // intentionally ==
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if (!isset($format)) {
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$format = self::$dateFormat;
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$time = Nette\DateTime::from($time);
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return Strings::contains($format, '%')
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? strftime($format, $time->format('U')) // formats according to locales
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: $time->format($format); // formats using date()
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* Converts to human readable file size.
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public static function bytes($bytes, $precision = 2)
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$bytes = round($bytes);
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$units = array('B', 'kB', 'MB', 'GB', 'TB', 'PB');
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foreach ($units as $unit) {
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if (abs($bytes) < 1024 || $unit === end($units)) {
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$bytes = $bytes / 1024;
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return round($bytes, $precision) . ' ' . $unit;
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* Returns array of string length.
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public static function length($var)
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return is_string($var) ? Strings::length($var) : count($var);
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* Performs a search and replace.
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public static function replace($subject, $search, $replacement = '')
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return str_replace($search, $replacement, $subject);
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* The data: URI generator.
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public static function dataStream($data, $type = NULL)
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if ($type === NULL) {
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$type = Nette\Utils\MimeTypeDetector::fromString($data);
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return 'data:' . ($type ? "$type;" : '') . 'base64,' . base64_encode($data);
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public static function null($value)
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public static function nl2br($value)
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return nl2br($value, Html::$xhtml);
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/********************* Template tools ****************d*g**/
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* Removes unnecessary blocks of PHP code.
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public static function optimizePhp($source, $lineLength = 80, $existenceOfThisParameterSolvesDamnBugInPHP535 = NULL)
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$tokens = new \ArrayIterator(token_get_all($source));
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foreach ($tokens as $key => $token) {
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if (is_array($token)) {
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if ($token[0] === T_INLINE_HTML) {
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} elseif ($token[0] === T_CLOSE_TAG) {
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$next = isset($tokens[$key + 1]) ? $tokens[$key + 1] : NULL;
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if (substr($res, -1) !== '<' && preg_match('#^<\?php\s*\z#', $php)) {
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$php = ''; // removes empty (?php ?), but retains ((?php ?)?php
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} elseif (is_array($next) && $next[0] === T_OPEN_TAG) { // remove ?)(?php
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if (!strspn($lastChar, ';{}:/')) {
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$php .= $lastChar = ';';
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if (substr($next[1], -1) === "\n") {
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$res .= preg_replace('#;?(\s)*\z#', '$1', $php) . $token[1]; // remove last semicolon before ?)
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if (strlen($res) - strrpos($res, "\n") > $lineLength
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&& (!is_array($next) || strpos($next[1], "\n") === FALSE)
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} else { // remove last ?)
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if (!strspn($lastChar, '};')) {
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} elseif ($token[0] === T_ELSE || $token[0] === T_ELSEIF) {
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if ($tokens[$key + 1] === ':' && $lastChar === '}') {
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$php .= ';'; // semicolon needed in if(): ... if() ... else:
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if (!in_array($token[0], array(T_WHITESPACE, T_COMMENT, T_DOC_COMMENT, T_OPEN_TAG))) {
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$php .= $lastChar = $token;
added
removed
Nette-2.0.13/Nette/Templating/Helpers.php
