function JSqueeze::renameVars

Same name in other branches

1. 5.0.x advagg_js_minify/jsqueeze.inc \Patchwork\JSqueeze::renameVars()
2. 6.0.x advagg_js_minify/jsqueeze.inc \Patchwork\JSqueeze::renameVars()
3. 7.x-2.x advagg_js_compress/jsqueeze.inc \Patchwork\JSqueeze::renameVars()
4. 8.x-2.x advagg_js_minify/jsqueeze.inc \Patchwork\JSqueeze::renameVars()
5. 8.x-3.x advagg_js_minify/jsqueeze.inc \Patchwork\JSqueeze::renameVars()

1 call to JSqueeze::renameVars()

JSqueeze::squeeze in advagg_js_minify/jsqueeze.inc

Squeezes a JavaScript source code.

File

advagg_js_minify/jsqueeze.inc, line 808

Class

JSqueeze

Namespace

Patchwork

Code

protected function renameVars(&$tree, $root) {
    if ($root) {
        $tree['local'] += $tree['used'];
        $tree['used'] = array();
        foreach ($tree['local'] as $k => $v) {
            if ('.' == $k[0]) {
                $k = substr($k, 1);
            }
            if ('true' === $k) {
                $this->charFreq[48] += $v;
            }
            else {
                if ('false' === $k) {
                    $this->charFreq[49] += $v;
                }
                else {
                    if (!$this->specialVarRx || !preg_match("#^{$this->specialVarRx}\$#", $k)) {
                        foreach (count_chars($k, 1) as $k => $w) {
                            $this->charFreq[$k] += $w * $v;
                        }
                    }
                    else {
                        if (2 == strlen($k)) {
                            $tree['used'][] = $k[1];
                        }
                    }
                }
            }
        }
        arsort($this->charFreq);
        $this->str0 = '';
        $this->str1 = '';
        foreach ($this->charFreq as $k => $v) {
            if (!$v) {
                break;
            }
            $v = chr($k);
            if (64 < $k && $k < 91 || 96 < $k && $k < 123) {
                // A-Z a-z
                $this->str0 .= $v;
                $this->str1 .= $v;
            }
            else {
                if (47 < $k && $k < 58) {
                    // 0-9
                    $this->str1 .= $v;
                }
            }
        }
        if ('' === $this->str0) {
            $this->str0 = 'claspemitdbfrugnjvhowkxqyzCLASPEMITDBFRUGNJVHOWKXQYZ';
            $this->str1 = $this->str0 . '0123456789';
        }
        foreach ($tree['local'] as $var => $root) {
            if ('.' != substr($var, 0, 1) && isset($tree['local'][".{$var}"])) {
                $tree['local'][$var] += $tree['local'][".{$var}"];
            }
        }
        foreach ($tree['local'] as $var => $root) {
            if ('.' == substr($var, 0, 1) && isset($tree['local'][substr($var, 1)])) {
                $tree['local'][$var] = $tree['local'][substr($var, 1)];
            }
        }
        arsort($tree['local']);
        foreach ($tree['local'] as $var => $root) {
            switch (substr($var, 0, 1)) {
                case '.':
                    if (!isset($tree['local'][substr($var, 1)])) {
                        $tree['local'][$var] = '#' . ($this->specialVarRx && 3 < strlen($var) && preg_match("'^\\.{$this->specialVarRx}\$'", $var) ? $this->getNextName($tree) . '$' : substr($var, 1));
                    }
                    break;
                case ';':
                    $tree['local'][$var] = 0 === $root ? '' : $this->getNextName($tree);
                case '#':
                    break;
                default:
                    $root = $this->specialVarRx && 2 < strlen($var) && preg_match("'^{$this->specialVarRx}\$'", $var) ? $this->getNextName($tree) . '$' : $var;
                    $tree['local'][$var] = $root;
                    if (isset($tree['local'][".{$var}"])) {
                        $tree['local'][".{$var}"] = '#' . $root;
                    }
            }
        }
        foreach ($tree['local'] as $var => $root) {
            $tree['local'][$var] = preg_replace("'^#'", '.', $tree['local'][$var]);
        }
    }
    else {
        arsort($tree['local']);
        if (false !== $tree['nfe']) {
            $tree['used'][] = $tree['local'][$tree['nfe']];
        }
        foreach ($tree['local'] as $var => $root) {
            if ($tree['nfe'] !== $var) {
                $tree['local'][$var] = 0 === $root ? '' : $this->getNextName($tree);
            }
        }
    }
    $this->local_tree =& $tree['local'];
    $this->used_tree =& $tree['used'];
    $tree['code'] = preg_replace_callback("#[.,{ ]?(?<![a-zA-Z0-9_\$@]){$this->varRx}:?#", array(
        &$this,
        'getNewName',
    ), $tree['code']);
    $this->specialVarRx && ($tree['code'] = preg_replace_callback("#//''\"\"[0-9]+'#", array(
        &$this,
        'renameInString',
    ), $tree['code']));
    foreach ($tree['childs'] as $a => &$b) {
        $this->renameVars($b, false);
        $tree['code'] = str_replace($a, $b['code'], $tree['code']);
        unset($tree['childs'][$a]);
    }
}