1: <?php
  2: 
  3: /**
  4:  * This file is part of the Latte (https://latte.nette.org)
  5:  * Copyright (c) 2008 David Grudl (https://davidgrudl.com)
  6:  */
  7: 
  8: namespace Latte;
  9: 
 10: 
 11: /**
 12:  * PHP helpers.
 13:  * @internal
 14:  */
 15: class PhpHelpers
 16: {
 17: 
 18:     /**
 19:      * Optimizes code readability.
 20:      * @param  string
 21:      * @return string
 22:      */
 23:     public static function reformatCode($source)
 24:     {
 25:         $res = $php = '';
 26:         $lastChar = ';';
 27:         $tokens = new \ArrayIterator(token_get_all($source));
 28:         $level = $openLevel = 0;
 29:         $lineLength = 100;
 30: 
 31:         foreach ($tokens as $n => $token) {
 32:             if (is_array($token)) {
 33:                 list($name, $token) = ($tmp = $token);
 34:                 if ($name === T_INLINE_HTML) {
 35:                     $res .= $token;
 36: 
 37:                 } elseif ($name === T_OPEN_TAG) {
 38:                     $openLevel = $level;
 39: 
 40:                 } elseif ($name === T_CLOSE_TAG) {
 41:                     $next = isset($tokens[$n + 1]) ? $tokens[$n + 1] : null;
 42:                     if (is_array($next) && $next[0] === T_OPEN_TAG) { // remove ?)<?php
 43:                         if (!strspn($lastChar, ';{}:/')) {
 44:                             $php = rtrim($php) . ($lastChar = ';') . "\n" . str_repeat("\t", $level);
 45:                         } elseif (substr($next[1], -1) === "\n") {
 46:                             $php .= "\n" . str_repeat("\t", $level);
 47:                         }
 48:                         $tokens->next();
 49: 
 50:                     } else {
 51:                         if (trim($php) !== '' || substr($res, -1) === '<') { // skip <?php ?) but preserve <<?php
 52:                             $inline = strpos($php, "\n") === false && strlen($res) - strrpos($res, "\n") < $lineLength;
 53:                             $res .= '<?php' . ($inline ? ' ' : "\n" . str_repeat("\t", $openLevel));
 54:                             if (is_array($next) && strpos($next[1], "\n") === false) {
 55:                                 $token = rtrim($token, "\n");
 56:                             } else {
 57:                                 $php = rtrim($php, "\t");
 58:                             }
 59:                             $res .= $php . $token;
 60:                         }
 61:                         $php = '';
 62:                         $lastChar = ';';
 63:                     }
 64: 
 65:                 } elseif ($name === T_ELSE || $name === T_ELSEIF) {
 66:                     if ($tokens[$n + 1] === ':' && $lastChar === '}') {
 67:                         $php .= ';'; // semicolon needed in if(): ... if() ... else:
 68:                     }
 69:                     $lastChar = '';
 70:                     $php .= $token;
 71: 
 72:                 } elseif ($name === T_DOC_COMMENT || $name === T_COMMENT) {
 73:                     $php .= preg_replace("#\n[ \t]*+(?!\n)#", "\n" . str_repeat("\t", $level), $token);
 74: 
 75:                 } elseif ($name === T_WHITESPACE) {
 76:                     $prev = $tokens[$n - 1];
 77:                     $lines = substr_count($token, "\n");
 78:                     if ($prev === '{' || $prev === '}' || $prev === ';' || $lines) {
 79:                         $token = str_repeat("\n", max(1, $lines)) . str_repeat("\t", $level); // indent last line
 80:                     } elseif ($prev[0] === T_OPEN_TAG) {
 81:                         $token = '';
 82:                     }
 83:                     $php .= $token;
 84: 
 85:                 } else {
 86:                     if (in_array($name, [T_CURLY_OPEN, T_DOLLAR_OPEN_CURLY_BRACES], true)) {
 87:                         $level++;
 88:                     }
 89:                     $lastChar = '';
 90:                     $php .= $token;
 91:                 }
 92:             } else {
 93:                 if ($token === '{' || $token === '[') {
 94:                     $level++;
 95:                 } elseif ($token === '}' || $token === ']') {
 96:                     $level--;
 97:                     $php .= "\x08";
 98:                 } elseif ($token === ';' && !(isset($tokens[$n + 1]) && $tokens[$n + 1][0] === T_WHITESPACE)) {
 99:                     $token .= "\n" . str_repeat("\t", $level); // indent last line
100:                 }
101:                 $lastChar = $token;
102:                 $php .= $token;
103:             }
104:         }
105: 
106:         if ($php) {
107:             $res .= "<?php\n" . str_repeat("\t", $openLevel) . $php;
108:         }
109:         $res = str_replace(["\t\x08", "\x08"], '', $res);
110:         return $res;
111:     }
112: 
113: 
114:     public static function dump($value)
115:     {
116:         if (is_array($value)) {
117:             $s = "[\n";
118:             foreach ($value as $k => $v) {
119:                 $v = is_array($v) && (!$v || array_keys($v) === range(0, count($v) - 1))
120:                     ? '[' . implode(', ', array_map(function ($s) { return var_export($s, true); }, $v)) . ']'
121:                     : var_export($v, true);
122:                 $s .= "\t\t" . var_export($k, true) . ' => ' . $v . ",\n";
123:             }
124:             return $s . "\t]";
125:         }
126:         return var_export($value, true);
127:     }
128: }
129: