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   1  <?php
   2  _deprecated_file( basename( __FILE__ ), '5.3.0', null, 'The PHP native JSON extension is now a requirement.' );
   3  
   4  if ( ! class_exists( 'Services_JSON' ) ) :
   5  /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
   6  /**
   7   * Converts to and from JSON format.
   8   *
   9   * JSON (JavaScript Object Notation) is a lightweight data-interchange
  10   * format. It is easy for humans to read and write. It is easy for machines
  11   * to parse and generate. It is based on a subset of the JavaScript
  12   * Programming Language, Standard ECMA-262 3rd Edition - December 1999.
  13   * This feature can also be found in  Python. JSON is a text format that is
  14   * completely language independent but uses conventions that are familiar
  15   * to programmers of the C-family of languages, including C, C++, C#, Java,
  16   * JavaScript, Perl, TCL, and many others. These properties make JSON an
  17   * ideal data-interchange language.
  18   *
  19   * This package provides a simple encoder and decoder for JSON notation. It
  20   * is intended for use with client-side JavaScript applications that make
  21   * use of HTTPRequest to perform server communication functions - data can
  22   * be encoded into JSON notation for use in a client-side javaScript, or
  23   * decoded from incoming JavaScript requests. JSON format is native to
  24   * JavaScript, and can be directly eval()'ed with no further parsing
  25   * overhead
  26   *
  27   * All strings should be in ASCII or UTF-8 format!
  28   *
  29   * LICENSE: Redistribution and use in source and binary forms, with or
  30   * without modification, are permitted provided that the following
  31   * conditions are met: Redistributions of source code must retain the
  32   * above copyright notice, this list of conditions and the following
  33   * disclaimer. Redistributions in binary form must reproduce the above
  34   * copyright notice, this list of conditions and the following disclaimer
  35   * in the documentation and/or other materials provided with the
  36   * distribution.
  37   *
  38   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  39   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  40   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
  41   * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  42   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  43   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  44   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  45   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  46   * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  47   * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  48   * DAMAGE.
  49   *
  50   * @category
  51   * @package     Services_JSON
  52   * @author      Michal Migurski <mike-json@teczno.com>
  53   * @author      Matt Knapp <mdknapp[at]gmail[dot]com>
  54   * @author      Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
  55   * @copyright   2005 Michal Migurski
  56   * @version     CVS: $Id: JSON.php 305040 2010-11-02 23:19:03Z alan_k $
  57   * @license     http://www.opensource.org/licenses/bsd-license.php
  58   * @link        http://pear.php.net/pepr/pepr-proposal-show.php?id=198
  59   */
  60  
  61  /**
  62   * Marker constant for Services_JSON::decode(), used to flag stack state
  63   */
  64  define('SERVICES_JSON_SLICE',   1);
  65  
  66  /**
  67   * Marker constant for Services_JSON::decode(), used to flag stack state
  68   */
  69  define('SERVICES_JSON_IN_STR',  2);
  70  
  71  /**
  72   * Marker constant for Services_JSON::decode(), used to flag stack state
  73   */
  74  define('SERVICES_JSON_IN_ARR',  3);
  75  
  76  /**
  77   * Marker constant for Services_JSON::decode(), used to flag stack state
  78   */
  79  define('SERVICES_JSON_IN_OBJ',  4);
  80  
  81  /**
  82   * Marker constant for Services_JSON::decode(), used to flag stack state
  83   */
  84  define('SERVICES_JSON_IN_CMT', 5);
  85  
  86  /**
  87   * Behavior switch for Services_JSON::decode()
  88   */
  89  define('SERVICES_JSON_LOOSE_TYPE', 16);
  90  
  91  /**
  92   * Behavior switch for Services_JSON::decode()
  93   */
  94  define('SERVICES_JSON_SUPPRESS_ERRORS', 32);
  95  
  96  /**
  97   * Behavior switch for Services_JSON::decode()
  98   */
  99  define('SERVICES_JSON_USE_TO_JSON', 64);
 100  
 101  /**
 102   * Converts to and from JSON format.
 103   *
 104   * Brief example of use:
 105   *
 106   * <code>
 107   * // create a new instance of Services_JSON
 108   * $json = new Services_JSON();
 109   *
 110   * // convert a complex value to JSON notation, and send it to the browser
 111   * $value = array('foo', 'bar', array(1, 2, 'baz'), array(3, array(4)));
 112   * $output = $json->encode($value);
 113   *
 114   * print($output);
 115   * // prints: ["foo","bar",[1,2,"baz"],[3,[4]]]
 116   *
 117   * // accept incoming POST data, assumed to be in JSON notation
 118   * $input = file_get_contents('php://input', 1000000);
 119   * $value = $json->decode($input);
 120   * </code>
 121   */
 122  class Services_JSON
 123  {
 124     /**
 125      * constructs a new JSON instance
 126      *
 127      * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 128      *
 129      * @param    int     $use    object behavior flags; combine with boolean-OR
 130      *
 131      *                           possible values:
 132      *                           - SERVICES_JSON_LOOSE_TYPE:  loose typing.
 133      *                                   "{...}" syntax creates associative arrays
 134      *                                   instead of objects in decode().
 135      *                           - SERVICES_JSON_SUPPRESS_ERRORS:  error suppression.
 136      *                                   Values which can't be encoded (e.g. resources)
 137      *                                   appear as NULL instead of throwing errors.
 138      *                                   By default, a deeply-nested resource will
 139      *                                   bubble up with an error, so all return values
 140      *                                   from encode() should be checked with isError()
 141      *                           - SERVICES_JSON_USE_TO_JSON:  call toJSON when serializing objects
 142      *                                   It serializes the return value from the toJSON call rather 
 143      *                                   than the object itself, toJSON can return associative arrays, 
 144      *                                   strings or numbers, if you return an object, make sure it does
 145      *                                   not have a toJSON method, otherwise an error will occur.
 146      */
 147      function __construct( $use = 0 )
 148      {
 149          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 150  
 151          $this->use = $use;
 152          $this->_mb_strlen            = function_exists('mb_strlen');
 153          $this->_mb_convert_encoding  = function_exists('mb_convert_encoding');
 154          $this->_mb_substr            = function_exists('mb_substr');
 155      }
 156  
 157      /**
 158       * PHP4 constructor.
 159       *
 160       * @deprecated 5.3.0 Use __construct() instead.
 161       *
 162       * @see Services_JSON::__construct()
 163       */
 164  	public function Services_JSON( $use = 0 ) {
 165          _deprecated_constructor( 'Services_JSON', '5.3.0', get_class( $this ) );
 166          self::__construct( $use );
 167      }
 168      // private - cache the mbstring lookup results..
 169      var $_mb_strlen = false;
 170      var $_mb_substr = false;
 171      var $_mb_convert_encoding = false;
 172      
 173     /**
 174      * convert a string from one UTF-16 char to one UTF-8 char
 175      *
 176      * Normally should be handled by mb_convert_encoding, but
 177      * provides a slower PHP-only method for installations
 178      * that lack the multibye string extension.
 179      *
 180      * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 181      *
 182      * @param    string  $utf16  UTF-16 character
 183      * @return   string  UTF-8 character
 184      * @access   private
 185      */
 186      function utf162utf8($utf16)
 187      {
 188          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 189  
 190          // oh please oh please oh please oh please oh please
 191          if($this->_mb_convert_encoding) {
 192              return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
 193          }
 194  
 195          $bytes = (ord($utf16[0]) << 8) | ord($utf16[1]);
 196  
 197          switch(true) {
 198              case ((0x7F & $bytes) == $bytes):
 199                  // this case should never be reached, because we are in ASCII range
 200                  // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 201                  return chr(0x7F & $bytes);
 202  
 203              case (0x07FF & $bytes) == $bytes:
 204                  // return a 2-byte UTF-8 character
 205                  // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 206                  return chr(0xC0 | (($bytes >> 6) & 0x1F))
 207                       . chr(0x80 | ($bytes & 0x3F));
 208  
 209              case (0xFFFF & $bytes) == $bytes:
 210                  // return a 3-byte UTF-8 character
 211                  // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 212                  return chr(0xE0 | (($bytes >> 12) & 0x0F))
 213                       . chr(0x80 | (($bytes >> 6) & 0x3F))
 214                       . chr(0x80 | ($bytes & 0x3F));
 215          }
 216  
 217          // ignoring UTF-32 for now, sorry
 218          return '';
 219      }
 220  
 221     /**
 222      * convert a string from one UTF-8 char to one UTF-16 char
 223      *
 224      * Normally should be handled by mb_convert_encoding, but
 225      * provides a slower PHP-only method for installations
 226      * that lack the multibyte string extension.
 227      *
 228      * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 229      *
 230      * @param    string  $utf8   UTF-8 character
 231      * @return   string  UTF-16 character
 232      * @access   private
 233      */
 234      function utf82utf16($utf8)
 235      {
 236          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 237  
 238          // oh please oh please oh please oh please oh please
 239          if($this->_mb_convert_encoding) {
 240              return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
 241          }
 242  
 243          switch($this->strlen8($utf8)) {
 244              case 1:
 245                  // this case should never be reached, because we are in ASCII range
 246                  // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 247                  return $utf8;
 248  
 249              case 2:
 250                  // return a UTF-16 character from a 2-byte UTF-8 char
 251                  // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 252                  return chr(0x07 & (ord($utf8[0]) >> 2))
 253                       . chr((0xC0 & (ord($utf8[0]) << 6))
 254                           | (0x3F & ord($utf8[1])));
 255  
 256              case 3:
 257                  // return a UTF-16 character from a 3-byte UTF-8 char
 258                  // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 259                  return chr((0xF0 & (ord($utf8[0]) << 4))
 260                           | (0x0F & (ord($utf8[1]) >> 2)))
 261                       . chr((0xC0 & (ord($utf8[1]) << 6))
 262                           | (0x7F & ord($utf8[2])));
 263          }
 264  
 265          // ignoring UTF-32 for now, sorry
 266          return '';
 267      }
 268  
 269     /**
 270      * encodes an arbitrary variable into JSON format (and sends JSON Header)
 271      *
 272      * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 273      *
 274      * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
 275      *                           see argument 1 to Services_JSON() above for array-parsing behavior.
 276      *                           if var is a string, note that encode() always expects it
 277      *                           to be in ASCII or UTF-8 format!
 278      *
 279      * @return   mixed   JSON string representation of input var or an error if a problem occurs
 280      * @access   public
 281      */
 282      function encode($var)
 283      {
 284          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 285  
 286          header('Content-type: application/json');
 287          return $this->encodeUnsafe($var);
 288      }
 289      /**
 290      * encodes an arbitrary variable into JSON format without JSON Header - warning - may allow XSS!!!!)
 291      *
 292      * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 293      *
 294      * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
 295      *                           see argument 1 to Services_JSON() above for array-parsing behavior.
 296      *                           if var is a string, note that encode() always expects it
 297      *                           to be in ASCII or UTF-8 format!
 298      *
 299      * @return   mixed   JSON string representation of input var or an error if a problem occurs
 300      * @access   public
 301      */
 302      function encodeUnsafe($var)
 303      {
 304          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 305  
 306          // see bug #16908 - regarding numeric locale printing
 307          $lc = setlocale(LC_NUMERIC, 0);
 308          setlocale(LC_NUMERIC, 'C');
 309          $ret = $this->_encode($var);
 310          setlocale(LC_NUMERIC, $lc);
 311          return $ret;
 312          
 313      }
 314      /**
 315      * PRIVATE CODE that does the work of encodes an arbitrary variable into JSON format 
 316      *
 317      * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 318      *
 319      * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
 320      *                           see argument 1 to Services_JSON() above for array-parsing behavior.
 321      *                           if var is a string, note that encode() always expects it
 322      *                           to be in ASCII or UTF-8 format!
 323      *
 324      * @return   mixed   JSON string representation of input var or an error if a problem occurs
 325      * @access   public
 326      */
 327      function _encode($var) 
 328      {
 329          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 330  
 331          switch (gettype($var)) {
 332              case 'boolean':
 333                  return $var ? 'true' : 'false';
 334  
 335              case 'NULL':
 336                  return 'null';
 337  
 338              case 'integer':
 339                  return (int) $var;
 340  
 341              case 'double':
 342              case 'float':
 343                  return  (float) $var;
 344  
 345              case 'string':
 346                  // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
 347                  $ascii = '';
 348                  $strlen_var = $this->strlen8($var);
 349  
 350                 /*
 351                  * Iterate over every character in the string,
 352                  * escaping with a slash or encoding to UTF-8 where necessary
 353                  */
 354                  for ($c = 0; $c < $strlen_var; ++$c) {
 355  
 356                      $ord_var_c = ord($var[$c]);
 357  
 358                      switch (true) {
 359                          case $ord_var_c == 0x08:
 360                              $ascii .= '\b';
 361                              break;
 362                          case $ord_var_c == 0x09:
 363                              $ascii .= '\t';
 364                              break;
 365                          case $ord_var_c == 0x0A:
 366                              $ascii .= '\n';
 367                              break;
 368                          case $ord_var_c == 0x0C:
 369                              $ascii .= '\f';
 370                              break;
 371                          case $ord_var_c == 0x0D:
 372                              $ascii .= '\r';
 373                              break;
 374  
 375                          case $ord_var_c == 0x22:
 376                          case $ord_var_c == 0x2F:
 377                          case $ord_var_c == 0x5C:
 378                              // double quote, slash, slosh
 379                              $ascii .= '\\'.$var[$c];
 380                              break;
 381  
 382                          case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
 383                              // characters U-00000000 - U-0000007F (same as ASCII)
 384                              $ascii .= $var[$c];
 385                              break;
 386  
 387                          case (($ord_var_c & 0xE0) == 0xC0):
 388                              // characters U-00000080 - U-000007FF, mask 110XXXXX
 389                              // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 390                              if ($c+1 >= $strlen_var) {
 391                                  $c += 1;
 392                                  $ascii .= '?';
 393                                  break;
 394                              }
 395                              
 396                              $char = pack('C*', $ord_var_c, ord($var[$c + 1]));
 397                              $c += 1;
 398                              $utf16 = $this->utf82utf16($char);
 399                              $ascii .= sprintf('\u%04s', bin2hex($utf16));
 400                              break;
 401  
 402                          case (($ord_var_c & 0xF0) == 0xE0):
 403                              if ($c+2 >= $strlen_var) {
 404                                  $c += 2;
 405                                  $ascii .= '?';
 406                                  break;
 407                              }
 408                              // characters U-00000800 - U-0000FFFF, mask 1110XXXX
 409                              // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 410                              $char = pack('C*', $ord_var_c,
 411                                           @ord($var[$c + 1]),
 412                                           @ord($var[$c + 2]));
 413                              $c += 2;
 414                              $utf16 = $this->utf82utf16($char);
 415                              $ascii .= sprintf('\u%04s', bin2hex($utf16));
 416                              break;
 417  
 418                          case (($ord_var_c & 0xF8) == 0xF0):
 419                              if ($c+3 >= $strlen_var) {
 420                                  $c += 3;
 421                                  $ascii .= '?';
 422                                  break;
 423                              }
 424                              // characters U-00010000 - U-001FFFFF, mask 11110XXX
 425                              // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 426                              $char = pack('C*', $ord_var_c,
 427                                           ord($var[$c + 1]),
 428                                           ord($var[$c + 2]),
 429                                           ord($var[$c + 3]));
 430                              $c += 3;
 431                              $utf16 = $this->utf82utf16($char);
 432                              $ascii .= sprintf('\u%04s', bin2hex($utf16));
 433                              break;
 434  
 435                          case (($ord_var_c & 0xFC) == 0xF8):
 436                              // characters U-00200000 - U-03FFFFFF, mask 111110XX
 437                              // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 438                              if ($c+4 >= $strlen_var) {
 439                                  $c += 4;
 440                                  $ascii .= '?';
 441                                  break;
 442                              }
 443                              $char = pack('C*', $ord_var_c,
 444                                           ord($var[$c + 1]),
 445                                           ord($var[$c + 2]),
 446                                           ord($var[$c + 3]),
 447                                           ord($var[$c + 4]));
 448                              $c += 4;
 449                              $utf16 = $this->utf82utf16($char);
 450                              $ascii .= sprintf('\u%04s', bin2hex($utf16));
 451                              break;
 452  
 453                          case (($ord_var_c & 0xFE) == 0xFC):
 454                          if ($c+5 >= $strlen_var) {
 455                                  $c += 5;
 456                                  $ascii .= '?';
 457                                  break;
 458                              }
 459                              // characters U-04000000 - U-7FFFFFFF, mask 1111110X
 460                              // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 461                              $char = pack('C*', $ord_var_c,
 462                                           ord($var[$c + 1]),
 463                                           ord($var[$c + 2]),
 464                                           ord($var[$c + 3]),
 465                                           ord($var[$c + 4]),
 466                                           ord($var[$c + 5]));
 467                              $c += 5;
 468                              $utf16 = $this->utf82utf16($char);
 469                              $ascii .= sprintf('\u%04s', bin2hex($utf16));
 470                              break;
 471                      }
 472                  }
 473                  return  '"'.$ascii.'"';
 474  
 475              case 'array':
 476                 /*
 477                  * As per JSON spec if any array key is not an integer
 478                  * we must treat the whole array as an object. We
 479                  * also try to catch a sparsely populated associative
 480                  * array with numeric keys here because some JS engines
 481                  * will create an array with empty indexes up to
 482                  * max_index which can cause memory issues and because
 483                  * the keys, which may be relevant, will be remapped
 484                  * otherwise.
 485                  *
 486                  * As per the ECMA and JSON specification an object may
 487                  * have any string as a property. Unfortunately due to
 488                  * a hole in the ECMA specification if the key is a
 489                  * ECMA reserved word or starts with a digit the
 490                  * parameter is only accessible using ECMAScript's
 491                  * bracket notation.
 492                  */
 493  
 494                  // treat as a JSON object
 495                  if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
 496                      $properties = array_map(array($this, 'name_value'),
 497                                              array_keys($var),
 498                                              array_values($var));
 499  
 500                      foreach($properties as $property) {
 501                          if(Services_JSON::isError($property)) {
 502                              return $property;
 503                          }
 504                      }
 505  
 506                      return '{' . join(',', $properties) . '}';
 507                  }
 508  
 509                  // treat it like a regular array
 510                  $elements = array_map(array($this, '_encode'), $var);
 511  
 512                  foreach($elements as $element) {
 513                      if(Services_JSON::isError($element)) {
 514                          return $element;
 515                      }
 516                  }
 517  
 518                  return '[' . join(',', $elements) . ']';
 519  
 520              case 'object':
 521              
 522                  // support toJSON methods.
 523                  if (($this->use & SERVICES_JSON_USE_TO_JSON) && method_exists($var, 'toJSON')) {
 524                      // this may end up allowing unlimited recursion
 525                      // so we check the return value to make sure it's not got the same method.
 526                      $recode = $var->toJSON();
 527                      
 528                      if (method_exists($recode, 'toJSON')) {
 529                          
 530                          return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
 531                          ? 'null'
 532                          : new Services_JSON_Error(get_class($var).
 533                              " toJSON returned an object with a toJSON method.");
 534                              
 535                      }
 536                      
 537                      return $this->_encode( $recode );
 538                  } 
 539                  
 540                  $vars = get_object_vars($var);
 541                  
 542                  $properties = array_map(array($this, 'name_value'),
 543                                          array_keys($vars),
 544                                          array_values($vars));
 545  
 546                  foreach($properties as $property) {
 547                      if(Services_JSON::isError($property)) {
 548                          return $property;
 549                      }
 550                  }
 551  
 552                  return '{' . join(',', $properties) . '}';
 553  
 554              default:
 555                  return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
 556                      ? 'null'
 557                      : new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
 558          }
 559      }
 560  
 561     /**
 562      * array-walking function for use in generating JSON-formatted name-value pairs
 563      *
 564      * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 565      *
 566      * @param    string  $name   name of key to use
 567      * @param    mixed   $value  reference to an array element to be encoded
 568      *
 569      * @return   string  JSON-formatted name-value pair, like '"name":value'
 570      * @access   private
 571      */
 572      function name_value($name, $value)
 573      {
 574          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 575  
 576          $encoded_value = $this->_encode($value);
 577  
 578          if(Services_JSON::isError($encoded_value)) {
 579              return $encoded_value;
 580          }
 581  
 582          return $this->_encode(strval($name)) . ':' . $encoded_value;
 583      }
 584  
 585     /**
 586      * reduce a string by removing leading and trailing comments and whitespace
 587      *
 588      * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 589      *
 590      * @param    $str    string      string value to strip of comments and whitespace
 591      *
 592      * @return   string  string value stripped of comments and whitespace
 593      * @access   private
 594      */
 595      function reduce_string($str)
 596      {
 597          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 598  
 599          $str = preg_replace(array(
 600  
 601                  // eliminate single line comments in '// ...' form
 602                  '#^\s*//(.+)$#m',
 603  
 604                  // eliminate multi-line comments in '/* ... */' form, at start of string
 605                  '#^\s*/\*(.+)\*/#Us',
 606  
 607                  // eliminate multi-line comments in '/* ... */' form, at end of string
 608                  '#/\*(.+)\*/\s*$#Us'
 609  
 610              ), '', $str);
 611  
 612          // eliminate extraneous space
 613          return trim($str);
 614      }
 615  
 616     /**
 617      * decodes a JSON string into appropriate variable
 618      *
 619      * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 620      *
 621      * @param    string  $str    JSON-formatted string
 622      *
 623      * @return   mixed   number, boolean, string, array, or object
 624      *                   corresponding to given JSON input string.
 625      *                   See argument 1 to Services_JSON() above for object-output behavior.
 626      *                   Note that decode() always returns strings
 627      *                   in ASCII or UTF-8 format!
 628      * @access   public
 629      */
 630      function decode($str)
 631      {
 632          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 633  
 634          $str = $this->reduce_string($str);
 635  
 636          switch (strtolower($str)) {
 637              case 'true':
 638                  return true;
 639  
 640              case 'false':
 641                  return false;
 642  
 643              case 'null':
 644                  return null;
 645  
 646              default:
 647                  $m = array();
 648  
 649                  if (is_numeric($str)) {
 650                      // Lookie-loo, it's a number
 651  
 652                      // This would work on its own, but I'm trying to be
 653                      // good about returning integers where appropriate:
 654                      // return (float)$str;
 655  
 656                      // Return float or int, as appropriate
 657                      return ((float)$str == (integer)$str)
 658                          ? (integer)$str
 659                          : (float)$str;
 660  
 661                  } elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
 662                      // STRINGS RETURNED IN UTF-8 FORMAT
 663                      $delim = $this->substr8($str, 0, 1);
 664                      $chrs = $this->substr8($str, 1, -1);
 665                      $utf8 = '';
 666                      $strlen_chrs = $this->strlen8($chrs);
 667  
 668                      for ($c = 0; $c < $strlen_chrs; ++$c) {
 669  
 670                          $substr_chrs_c_2 = $this->substr8($chrs, $c, 2);
 671                          $ord_chrs_c = ord($chrs[$c]);
 672  
 673                          switch (true) {
 674                              case $substr_chrs_c_2 == '\b':
 675                                  $utf8 .= chr(0x08);
 676                                  ++$c;
 677                                  break;
 678                              case $substr_chrs_c_2 == '\t':
 679                                  $utf8 .= chr(0x09);
 680                                  ++$c;
 681                                  break;
 682                              case $substr_chrs_c_2 == '\n':
 683                                  $utf8 .= chr(0x0A);
 684                                  ++$c;
 685                                  break;
 686                              case $substr_chrs_c_2 == '\f':
 687                                  $utf8 .= chr(0x0C);
 688                                  ++$c;
 689                                  break;
 690                              case $substr_chrs_c_2 == '\r':
 691                                  $utf8 .= chr(0x0D);
 692                                  ++$c;
 693                                  break;
 694  
 695                              case $substr_chrs_c_2 == '\\"':
 696                              case $substr_chrs_c_2 == '\\\'':
 697                              case $substr_chrs_c_2 == '\\\\':
 698                              case $substr_chrs_c_2 == '\\/':
 699                                  if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
 700                                     ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
 701                                      $utf8 .= $chrs[++$c];
 702                                  }
 703                                  break;
 704  
 705                              case preg_match('/\\\u[0-9A-F]{4}/i', $this->substr8($chrs, $c, 6)):
 706                                  // single, escaped unicode character
 707                                  $utf16 = chr(hexdec($this->substr8($chrs, ($c + 2), 2)))
 708                                         . chr(hexdec($this->substr8($chrs, ($c + 4), 2)));
 709                                  $utf8 .= $this->utf162utf8($utf16);
 710                                  $c += 5;
 711                                  break;
 712  
 713                              case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
 714                                  $utf8 .= $chrs[$c];
 715                                  break;
 716  
 717                              case ($ord_chrs_c & 0xE0) == 0xC0:
 718                                  // characters U-00000080 - U-000007FF, mask 110XXXXX
 719                                  //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 720                                  $utf8 .= $this->substr8($chrs, $c, 2);
 721                                  ++$c;
 722                                  break;
 723  
 724                              case ($ord_chrs_c & 0xF0) == 0xE0:
 725                                  // characters U-00000800 - U-0000FFFF, mask 1110XXXX
 726                                  // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 727                                  $utf8 .= $this->substr8($chrs, $c, 3);
 728                                  $c += 2;
 729                                  break;
 730  
 731                              case ($ord_chrs_c & 0xF8) == 0xF0:
 732                                  // characters U-00010000 - U-001FFFFF, mask 11110XXX
 733                                  // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 734                                  $utf8 .= $this->substr8($chrs, $c, 4);
 735                                  $c += 3;
 736                                  break;
 737  
 738                              case ($ord_chrs_c & 0xFC) == 0xF8:
 739                                  // characters U-00200000 - U-03FFFFFF, mask 111110XX
 740                                  // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 741                                  $utf8 .= $this->substr8($chrs, $c, 5);
 742                                  $c += 4;
 743                                  break;
 744  
 745                              case ($ord_chrs_c & 0xFE) == 0xFC:
 746                                  // characters U-04000000 - U-7FFFFFFF, mask 1111110X
 747                                  // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
 748                                  $utf8 .= $this->substr8($chrs, $c, 6);
 749                                  $c += 5;
 750                                  break;
 751  
 752                          }
 753  
 754                      }
 755  
 756                      return $utf8;
 757  
 758                  } elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
 759                      // array, or object notation
 760  
 761                      if ($str[0] == '[') {
 762                          $stk = array(SERVICES_JSON_IN_ARR);
 763                          $arr = array();
 764                      } else {
 765                          if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
 766                              $stk = array(SERVICES_JSON_IN_OBJ);
 767                              $obj = array();
 768                          } else {
 769                              $stk = array(SERVICES_JSON_IN_OBJ);
 770                              $obj = new stdClass();
 771                          }
 772                      }
 773  
 774                      array_push($stk, array('what'  => SERVICES_JSON_SLICE,
 775                                             'where' => 0,
 776                                             'delim' => false));
 777  
 778                      $chrs = $this->substr8($str, 1, -1);
 779                      $chrs = $this->reduce_string($chrs);
 780  
 781                      if ($chrs == '') {
 782                          if (reset($stk) == SERVICES_JSON_IN_ARR) {
 783                              return $arr;
 784  
 785                          } else {
 786                              return $obj;
 787  
 788                          }
 789                      }
 790  
 791                      //print("\nparsing {$chrs}\n");
 792  
 793                      $strlen_chrs = $this->strlen8($chrs);
 794  
 795                      for ($c = 0; $c <= $strlen_chrs; ++$c) {
 796  
 797                          $top = end($stk);
 798                          $substr_chrs_c_2 = $this->substr8($chrs, $c, 2);
 799  
 800                          if (($c == $strlen_chrs) || (($chrs[$c] == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
 801                              // found a comma that is not inside a string, array, etc.,
 802                              // OR we've reached the end of the character list
 803                              $slice = $this->substr8($chrs, $top['where'], ($c - $top['where']));
 804                              array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
 805                              //print("Found split at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n");
 806  
 807                              if (reset($stk) == SERVICES_JSON_IN_ARR) {
 808                                  // we are in an array, so just push an element onto the stack
 809                                  array_push($arr, $this->decode($slice));
 810  
 811                              } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
 812                                  // we are in an object, so figure
 813                                  // out the property name and set an
 814                                  // element in an associative array,
 815                                  // for now
 816                                  $parts = array();
 817                                  
 818                                 if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:/Uis', $slice, $parts)) {
 819                                      // "name":value pair
 820                                      $key = $this->decode($parts[1]);
 821                                      $val = $this->decode(trim(substr($slice, strlen($parts[0])), ", \t\n\r\0\x0B"));
 822                                      if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
 823                                          $obj[$key] = $val;
 824                                      } else {
 825                                          $obj->$key = $val;
 826                                      }
 827                                  } elseif (preg_match('/^\s*(\w+)\s*:/Uis', $slice, $parts)) {
 828                                      // name:value pair, where name is unquoted
 829                                      $key = $parts[1];
 830                                      $val = $this->decode(trim(substr($slice, strlen($parts[0])), ", \t\n\r\0\x0B"));
 831  
 832                                      if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
 833                                          $obj[$key] = $val;
 834                                      } else {
 835                                          $obj->$key = $val;
 836                                      }
 837                                  }
 838  
 839                              }
 840  
 841                          } elseif ((($chrs[$c] == '"') || ($chrs[$c] == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
 842                              // found a quote, and we are not inside a string
 843                              array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs[$c]));
 844                              //print("Found start of string at {$c}\n");
 845  
 846                          } elseif (($chrs[$c] == $top['delim']) &&
 847                                   ($top['what'] == SERVICES_JSON_IN_STR) &&
 848                                   (($this->strlen8($this->substr8($chrs, 0, $c)) - $this->strlen8(rtrim($this->substr8($chrs, 0, $c), '\\'))) % 2 != 1)) {
 849                              // found a quote, we're in a string, and it's not escaped
 850                              // we know that it's not escaped because there is _not_ an
 851                              // odd number of backslashes at the end of the string so far
 852                              array_pop($stk);
 853                              //print("Found end of string at {$c}: ".$this->substr8($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
 854  
 855                          } elseif (($chrs[$c] == '[') &&
 856                                   in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
 857                              // found a left-bracket, and we are in an array, object, or slice
 858                              array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
 859                              //print("Found start of array at {$c}\n");
 860  
 861                          } elseif (($chrs[$c] == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
 862                              // found a right-bracket, and we're in an array
 863                              array_pop($stk);
 864                              //print("Found end of array at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n");
 865  
 866                          } elseif (($chrs[$c] == '{') &&
 867                                   in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
 868                              // found a left-brace, and we are in an array, object, or slice
 869                              array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
 870                              //print("Found start of object at {$c}\n");
 871  
 872                          } elseif (($chrs[$c] == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
 873                              // found a right-brace, and we're in an object
 874                              array_pop($stk);
 875                              //print("Found end of object at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n");
 876  
 877                          } elseif (($substr_chrs_c_2 == '/*') &&
 878                                   in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
 879                              // found a comment start, and we are in an array, object, or slice
 880                              array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
 881                              $c++;
 882                              //print("Found start of comment at {$c}\n");
 883  
 884                          } elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
 885                              // found a comment end, and we're in one now
 886                              array_pop($stk);
 887                              $c++;
 888  
 889                              for ($i = $top['where']; $i <= $c; ++$i)
 890                                  $chrs = substr_replace($chrs, ' ', $i, 1);
 891  
 892                              //print("Found end of comment at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n");
 893  
 894                          }
 895  
 896                      }
 897  
 898                      if (reset($stk) == SERVICES_JSON_IN_ARR) {
 899                          return $arr;
 900  
 901                      } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
 902                          return $obj;
 903  
 904                      }
 905  
 906                  }
 907          }
 908      }
 909  
 910      /**
 911       * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 912       *
 913       * @todo Ultimately, this should just call PEAR::isError()
 914       */
 915      function isError($data, $code = null)
 916      {
 917          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 918  
 919          if (class_exists('pear')) {
 920              return PEAR::isError($data, $code);
 921          } elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
 922                                   is_subclass_of($data, 'services_json_error'))) {
 923              return true;
 924          }
 925  
 926          return false;
 927      }
 928      
 929      /**
 930       * Calculates length of string in bytes
 931       *
 932       * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 933       *
 934       * @param string
 935       * @return integer length
 936       */
 937      function strlen8( $str ) 
 938      {
 939          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 940  
 941          if ( $this->_mb_strlen ) {
 942              return mb_strlen( $str, "8bit" );
 943          }
 944          return strlen( $str );
 945      }
 946      
 947      /**
 948       * Returns part of a string, interpreting $start and $length as number of bytes.
 949       *
 950       * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 951       *
 952       * @param string
 953       * @param integer start
 954       * @param integer length
 955       * @return integer length
 956       */
 957      function substr8( $string, $start, $length=false ) 
 958      {
 959          _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 960  
 961          if ( $length === false ) {
 962              $length = $this->strlen8( $string ) - $start;
 963          }
 964          if ( $this->_mb_substr ) {
 965              return mb_substr( $string, $start, $length, "8bit" );
 966          }
 967          return substr( $string, $start, $length );
 968      }
 969  
 970  }
 971  
 972  if (class_exists('PEAR_Error')) {
 973  
 974      class Services_JSON_Error extends PEAR_Error
 975      {
 976          /**
 977           * PHP5 constructor.
 978           *
 979           * @deprecated 5.3.0 Use the PHP native JSON extension instead.
 980           */
 981          function __construct($message = 'unknown error', $code = null,
 982                                       $mode = null, $options = null, $userinfo = null)
 983          {
 984              _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
 985  
 986              parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
 987          }
 988  
 989          /**
 990           * PHP4 constructor.
 991           *
 992           * @deprecated 5.3.0 Use __construct() instead.
 993           *
 994           * @see Services_JSON_Error::__construct()
 995           */
 996  		public function Services_JSON_Error($message = 'unknown error', $code = null,
 997                                       $mode = null, $options = null, $userinfo = null) {
 998              _deprecated_constructor( 'Services_JSON_Error', '5.3.0', get_class( $this ) );
 999              self::__construct($message, $code, $mode, $options, $userinfo);
1000          }
1001      }
1002  
1003  } else {
1004  
1005      /**
1006       * @todo Ultimately, this class shall be descended from PEAR_Error
1007       */
1008      class Services_JSON_Error
1009      {
1010          /**
1011           * PHP5 constructor.
1012           *
1013           * @deprecated 5.3.0 Use the PHP native JSON extension instead.
1014           */
1015          function __construct( $message = 'unknown error', $code = null,
1016                                       $mode = null, $options = null, $userinfo = null )
1017          {
1018              _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
1019          }
1020  
1021          /**
1022           * PHP4 constructor.
1023           *
1024           * @deprecated 5.3.0 Use __construct() instead.
1025           *
1026           * @see Services_JSON_Error::__construct()
1027           */
1028  		public function Services_JSON_Error( $message = 'unknown error', $code = null,
1029                                           $mode = null, $options = null, $userinfo = null ) {
1030              _deprecated_constructor( 'Services_JSON_Error', '5.3.0', get_class( $this ) );
1031              self::__construct( $message, $code, $mode, $options, $userinfo );
1032          }
1033      }
1034  
1035  }
1036  
1037  endif;


Generated: Tue Dec 10 01:00:04 2019 Cross-referenced by PHPXref 0.7.1