includes/json/FormatJson.php

   1 <?php
   2 /**
   3  * Simple wrapper for json_econde and json_decode that falls back on Services_JSON class
   4  *
   5  * @file
   6  */
   7
   8 if ( !defined( 'MEDIAWIKI' ) ) {
   9         die( 1 );
  10 }
  11
  12 require_once dirname( __FILE__ ) . '/Services_JSON.php';
  13
  14 /**
  15  * JSON formatter wrapper class
  16  */
  17 class FormatJson {
  18
  19         /**
  20          * Returns the JSON representation of a value.
  21          *
  22          * @param $value Mixed: the value being encoded. Can be any type except a resource.
  23          * @param $isHtml Boolean
  24          *
  25          * @todo FIXME: "$isHtml" parameter's purpose is not documented. It appears to
  26          *        map to a parameter labeled "pretty-print output with indents and
  27          *        newlines" in Services_JSON::encode(), which has no string relation
  28          *        to HTML output.
  29          *
  30          * @return string
  31          */
  32         public static function encode( $value, $isHtml = false ) {
  33                 // Some versions of PHP have a broken json_encode, see PHP bug
  34                 // 46944. Test encoding an affected character (U+20000) to
  35                 // avoid this.
  36                 if ( !function_exists( 'json_encode' ) || $isHtml || strtolower( json_encode( "\xf0\xa0\x80\x80" ) ) != '"\ud840\udc00"' ) {
  37                         $json = new Services_JSON();
  38                         return $json->encode( $value, $isHtml );
  39                 } else {
  40                         return json_encode( $value );
  41                 }
  42         }
  43
  44         /**
  45          * Decodes a JSON string.
  46          *
  47          * @param $value String: the json string being decoded.
  48          * @param $assoc Boolean: when true, returned objects will be converted into associative arrays.
  49          *
  50          * @return Mixed: the value encoded in json in appropriate PHP type.
  51          * Values true, false and null (case-insensitive) are returned as true, false
  52          * and &null; respectively. &null; is returned if the json cannot be
  53          * decoded or if the encoded data is deeper than the recursion limit.
  54          */
  55         public static function decode( $value, $assoc = false ) {
  56                 if ( !function_exists( 'json_decode' ) ) {
  57                         $json = $assoc ? new Services_JSON( SERVICES_JSON_LOOSE_TYPE ) :
  58                                 new Services_JSON();
  59                         $jsonDec = $json->decode( $value );
  60                         return $jsonDec;
  61                 } else {
  62                         return json_decode( $value, $assoc );
  63                 }
  64         }
  65
  66 }