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/plugins/vjCommentPlugin/lib/tools/htmlpurifier/library/HTMLPurifier/VarParser/Flexible.php

https://bitbucket.org/Kudlaty/360kdw
PHP | 103 lines | 83 code | 4 blank | 16 comment | 41 complexity | 9ba5084965a3167605535ee579f8cc96 MD5 | raw file
  1<?php
  2
  3/**
  4 * Performs safe variable parsing based on types which can be used by
  5 * users. This may not be able to represent all possible data inputs,
  6 * however.
  7 */
  8class HTMLPurifier_VarParser_Flexible extends HTMLPurifier_VarParser
  9{
 10
 11    protected function parseImplementation($var, $type, $allow_null) {
 12        if ($allow_null && $var === null) return null;
 13        switch ($type) {
 14            // Note: if code "breaks" from the switch, it triggers a generic
 15            // exception to be thrown. Specific errors can be specifically
 16            // done here.
 17            case self::MIXED :
 18            case self::ISTRING :
 19            case self::STRING :
 20            case self::TEXT :
 21            case self::ITEXT :
 22                return $var;
 23            case self::INT :
 24                if (is_string($var) && ctype_digit($var)) $var = (int) $var;
 25                return $var;
 26            case self::FLOAT :
 27                if ((is_string($var) && is_numeric($var)) || is_int($var)) $var = (float) $var;
 28                return $var;
 29            case self::BOOL :
 30                if (is_int($var) && ($var === 0 || $var === 1)) {
 31                    $var = (bool) $var;
 32                } elseif (is_string($var)) {
 33                    if ($var == 'on' || $var == 'true' || $var == '1') {
 34                        $var = true;
 35                    } elseif ($var == 'off' || $var == 'false' || $var == '0') {
 36                        $var = false;
 37                    } else {
 38                        throw new HTMLPurifier_VarParserException("Unrecognized value '$var' for $type");
 39                    }
 40                }
 41                return $var;
 42            case self::ALIST :
 43            case self::HASH :
 44            case self::LOOKUP :
 45                if (is_string($var)) {
 46                    // special case: technically, this is an array with
 47                    // a single empty string item, but having an empty
 48                    // array is more intuitive
 49                    if ($var == '') return array();
 50                    if (strpos($var, "\n") === false && strpos($var, "\r") === false) {
 51                        // simplistic string to array method that only works
 52                        // for simple lists of tag names or alphanumeric characters
 53                        $var = explode(',',$var);
 54                    } else {
 55                        $var = preg_split('/(,|[\n\r]+)/', $var);
 56                    }
 57                    // remove spaces
 58                    foreach ($var as $i => $j) $var[$i] = trim($j);
 59                    if ($type === self::HASH) {
 60                        // key:value,key2:value2
 61                        $nvar = array();
 62                        foreach ($var as $keypair) {
 63                            $c = explode(':', $keypair, 2);
 64                            if (!isset($c[1])) continue;
 65                            $nvar[trim($c[0])] = trim($c[1]);
 66                        }
 67                        $var = $nvar;
 68                    }
 69                }
 70                if (!is_array($var)) break;
 71                $keys = array_keys($var);
 72                if ($keys === array_keys($keys)) {
 73                    if ($type == self::ALIST) return $var;
 74                    elseif ($type == self::LOOKUP) {
 75                        $new = array();
 76                        foreach ($var as $key) {
 77                            $new[$key] = true;
 78                        }
 79                        return $new;
 80                    } else break;
 81                }
 82                if ($type === self::ALIST) {
 83                    trigger_error("Array list did not have consecutive integer indexes", E_USER_WARNING);
 84                    return array_values($var);
 85                }
 86                if ($type === self::LOOKUP) {
 87                    foreach ($var as $key => $value) {
 88                        if ($value !== true) {
 89                            trigger_error("Lookup array has non-true value at key '$key'; maybe your input array was not indexed numerically", E_USER_WARNING);
 90                        }
 91                        $var[$key] = true;
 92                    }
 93                }
 94                return $var;
 95            default:
 96                $this->errorInconsistent(__CLASS__, $type);
 97        }
 98        $this->errorGeneric($var, $type);
 99    }
100
101}
102
103// vim: et sw=4 sts=4