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Edit File : class-json.php \| Size : 42.66 KB
<?php _deprecated_file( basename( __FILE__ ), '5.3.0', '', 'The PHP native JSON extension is now a requirement.' ); if ( ! class_exists( 'Services_JSON' ) ) : /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: / /* * Converts to and from JSON format. * * JSON (JavaScript Object Notation) is a lightweight data-interchange * format. It is easy for humans to read and write. It is easy for machines * to parse and generate. It is based on a subset of the JavaScript * Programming Language, Standard ECMA-262 3rd Edition - December 1999. * This feature can also be found in Python. JSON is a text format that is * completely language independent but uses conventions that are familiar * to programmers of the C-family of languages, including C, C++, C#, Java, * JavaScript, Perl, TCL, and many others. These properties make JSON an * ideal data-interchange language. * * This package provides a simple encoder and decoder for JSON notation. It * is intended for use with client-side JavaScript applications that make * use of HTTPRequest to perform server communication functions - data can * be encoded into JSON notation for use in a client-side javaScript, or * decoded from incoming JavaScript requests. JSON format is native to * JavaScript, and can be directly eval()'ed with no further parsing * overhead * * All strings should be in ASCII or UTF-8 format! * * LICENSE: Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: Redistributions of source code must retain the * above copyright notice, this list of conditions and the following * disclaimer. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * @category * @package Services_JSON * @author Michal Migurski <mike-json@teczno.com> * @author Matt Knapp <mdknapp[at]gmail[dot]com> * @author Brett Stimmerman <brettstimmerman[at]gmail[dot]com> * @copyright 2005 Michal Migurski * @version CVS: $Id: JSON.php 305040 2010-11-02 23:19:03Z alan_k $ * @license https://www.opensource.org/licenses/bsd-license.php * @link https://pear.php.net/pepr/pepr-proposal-show.php?id=198 / /* * Marker constant for Services_JSON::decode(), used to flag stack state / define('SERVICES_JSON_SLICE', 1); /* * Marker constant for Services_JSON::decode(), used to flag stack state / define('SERVICES_JSON_IN_STR', 2); /* * Marker constant for Services_JSON::decode(), used to flag stack state / define('SERVICES_JSON_IN_ARR', 3); /* * Marker constant for Services_JSON::decode(), used to flag stack state / define('SERVICES_JSON_IN_OBJ', 4); /* * Marker constant for Services_JSON::decode(), used to flag stack state / define('SERVICES_JSON_IN_CMT', 5); /* * Behavior switch for Services_JSON::decode() / define('SERVICES_JSON_LOOSE_TYPE', 16); /* * Behavior switch for Services_JSON::decode() / define('SERVICES_JSON_SUPPRESS_ERRORS', 32); /* * Behavior switch for Services_JSON::decode() / define('SERVICES_JSON_USE_TO_JSON', 64); /* * Converts to and from JSON format. * * Brief example of use: * * <code> * // create a new instance of Services_JSON * $json = new Services_JSON(); * * // convert a complex value to JSON notation, and send it to the browser * $value = array('foo', 'bar', array(1, 2, 'baz'), array(3, array(4))); * $output = $json->encode($value); * * print($output); * // prints: ["foo","bar",[1,2,"baz"],[3,[4]]] * * // accept incoming POST data, assumed to be in JSON notation * $input = file_get_contents('php://input', 1000000); * $value = $json->decode($input); * </code> / class Services_JSON { /* * Object behavior flags. * * @var int / public $use; // private - cache the mbstring lookup results.. var $_mb_strlen = false; var $_mb_substr = false; var $_mb_convert_encoding = false; /* * constructs a new JSON instance * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param int $use object behavior flags; combine with boolean-OR * * possible values: * - SERVICES_JSON_LOOSE_TYPE: loose typing. * "{...}" syntax creates associative arrays * instead of objects in decode(). * - SERVICES_JSON_SUPPRESS_ERRORS: error suppression. * Values which can't be encoded (e.g. resources) * appear as NULL instead of throwing errors. * By default, a deeply-nested resource will * bubble up with an error, so all return values * from encode() should be checked with isError() * - SERVICES_JSON_USE_TO_JSON: call toJSON when serializing objects * It serializes the return value from the toJSON call rather * than the object itself, toJSON can return associative arrays, * strings or numbers, if you return an object, make sure it does * not have a toJSON method, otherwise an error will occur. / function __construct( $use = 0 ) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); $this->use = $use; $this->_mb_strlen = function_exists('mb_strlen'); $this->_mb_convert_encoding = function_exists('mb_convert_encoding'); $this->_mb_substr = function_exists('mb_substr'); } /* * PHP4 constructor. * * @deprecated 5.3.0 Use __construct() instead. * * @see Services_JSON::__construct() / public function Services_JSON( $use = 0 ) { _deprecated_constructor( 'Services_JSON', '5.3.0', get_class( $this ) ); self::__construct( $use ); } /* * convert a string from one UTF-16 char to one UTF-8 char * * Normally should be handled by mb_convert_encoding, but * provides a slower PHP-only method for installations * that lack the multibye string extension. * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param string $utf16 UTF-16 character * @return string UTF-8 character * @access private / function utf162utf8($utf16) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); // oh please oh please oh please oh please oh please if($this->_mb_convert_encoding) { return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16'); } $bytes = (ord($utf16[0]) << 8) \| ord($utf16[1]); switch(true) { case ((0x7F & $bytes) == $bytes): // this case should never be reached, because we are in ASCII range // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr(0x7F & $bytes); case (0x07FF & $bytes) == $bytes: // return a 2-byte UTF-8 character // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr(0xC0 \| (($bytes >> 6) & 0x1F)) . chr(0x80 \| ($bytes & 0x3F)); case (0xFFFF & $bytes) == $bytes: // return a 3-byte UTF-8 character // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr(0xE0 \| (($bytes >> 12) & 0x0F)) . chr(0x80 \| (($bytes >> 6) & 0x3F)) . chr(0x80 \| ($bytes & 0x3F)); } // ignoring UTF-32 for now, sorry return ''; } /* * convert a string from one UTF-8 char to one UTF-16 char * * Normally should be handled by mb_convert_encoding, but * provides a slower PHP-only method for installations * that lack the multibyte string extension. * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param string $utf8 UTF-8 character * @return string UTF-16 character * @access private / function utf82utf16($utf8) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); // oh please oh please oh please oh please oh please if($this->_mb_convert_encoding) { return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8'); } switch($this->strlen8($utf8)) { case 1: // this case should never be reached, because we are in ASCII range // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return $utf8; case 2: // return a UTF-16 character from a 2-byte UTF-8 char // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr(0x07 & (ord($utf8[0]) >> 2)) . chr((0xC0 & (ord($utf8[0]) << 6)) \| (0x3F & ord($utf8[1]))); case 3: // return a UTF-16 character from a 3-byte UTF-8 char // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 return chr((0xF0 & (ord($utf8[0]) << 4)) \| (0x0F & (ord($utf8[1]) >> 2))) . chr((0xC0 & (ord($utf8[1]) << 6)) \| (0x7F & ord($utf8[2]))); } // ignoring UTF-32 for now, sorry return ''; } /* * encodes an arbitrary variable into JSON format (and sends JSON Header) * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param mixed $var any number, boolean, string, array, or object to be encoded. * see argument 1 to Services_JSON() above for array-parsing behavior. * if var is a string, note that encode() always expects it * to be in ASCII or UTF-8 format! * * @return mixed JSON string representation of input var or an error if a problem occurs * @access public / function encode($var) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); header('Content-Type: application/json'); return $this->encodeUnsafe($var); } /* * encodes an arbitrary variable into JSON format without JSON Header - warning - may allow XSS!!!!) * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param mixed $var any number, boolean, string, array, or object to be encoded. * see argument 1 to Services_JSON() above for array-parsing behavior. * if var is a string, note that encode() always expects it * to be in ASCII or UTF-8 format! * * @return mixed JSON string representation of input var or an error if a problem occurs * @access public / function encodeUnsafe($var) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); // see bug #16908 - regarding numeric locale printing $lc = setlocale(LC_NUMERIC, 0); setlocale(LC_NUMERIC, 'C'); $ret = $this->_encode($var); setlocale(LC_NUMERIC, $lc); return $ret; } /* * PRIVATE CODE that does the work of encodes an arbitrary variable into JSON format * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param mixed $var any number, boolean, string, array, or object to be encoded. * see argument 1 to Services_JSON() above for array-parsing behavior. * if var is a string, note that encode() always expects it * to be in ASCII or UTF-8 format! * * @return mixed JSON string representation of input var or an error if a problem occurs * @access public / function _encode($var) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); switch (gettype($var)) { case 'boolean': return $var ? 'true' : 'false'; case 'NULL': return 'null'; case 'integer': return (int) $var; case 'double': case 'float': return (float) $var; case 'string': // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT $ascii = ''; $strlen_var = $this->strlen8($var); / * Iterate over every character in the string, * escaping with a slash or encoding to UTF-8 where necessary / for ($c = 0; $c < $strlen_var; ++$c) { $ord_var_c = ord($var[$c]); switch (true) { case $ord_var_c == 0x08: $ascii .= '\b'; break; case $ord_var_c == 0x09: $ascii .= '\t'; break; case $ord_var_c == 0x0A: $ascii .= '\n'; break; case $ord_var_c == 0x0C: $ascii .= '\f'; break; case $ord_var_c == 0x0D: $ascii .= '\r'; break; case $ord_var_c == 0x22: case $ord_var_c == 0x2F: case $ord_var_c == 0x5C: // double quote, slash, slosh $ascii .= '\\'.$var[$c]; break; case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)): // characters U-00000000 - U-0000007F (same as ASCII) $ascii .= $var[$c]; break; case (($ord_var_c & 0xE0) == 0xC0): // characters U-00000080 - U-000007FF, mask 110XXXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 if ($c+1 >= $strlen_var) { $c += 1; $ascii .= '?'; break; } $char = pack('C', $ord_var_c, ord($var[$c + 1])); $c += 1; $utf16 = $this->utf82utf16($char); $ascii .= sprintf('\u%04s', bin2hex($utf16)); break; case (($ord_var_c & 0xF0) == 0xE0): if ($c+2 >= $strlen_var) { $c += 2; $ascii .= '?'; break; } // characters U-00000800 - U-0000FFFF, mask 1110XXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack('C', $ord_var_c, @ord($var[$c + 1]), @ord($var[$c + 2])); $c += 2; $utf16 = $this->utf82utf16($char); $ascii .= sprintf('\u%04s', bin2hex($utf16)); break; case (($ord_var_c & 0xF8) == 0xF0): if ($c+3 >= $strlen_var) { $c += 3; $ascii .= '?'; break; } // characters U-00010000 - U-001FFFFF, mask 11110XXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack('C', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3])); $c += 3; $utf16 = $this->utf82utf16($char); $ascii .= sprintf('\u%04s', bin2hex($utf16)); break; case (($ord_var_c & 0xFC) == 0xF8): // characters U-00200000 - U-03FFFFFF, mask 111110XX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 if ($c+4 >= $strlen_var) { $c += 4; $ascii .= '?'; break; } $char = pack('C', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]), ord($var[$c + 4])); $c += 4; $utf16 = $this->utf82utf16($char); $ascii .= sprintf('\u%04s', bin2hex($utf16)); break; case (($ord_var_c & 0xFE) == 0xFC): if ($c+5 >= $strlen_var) { $c += 5; $ascii .= '?'; break; } // characters U-04000000 - U-7FFFFFFF, mask 1111110X // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack('C', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]), ord($var[$c + 4]), ord($var[$c + 5])); $c += 5; $utf16 = $this->utf82utf16($char); $ascii .= sprintf('\u%04s', bin2hex($utf16)); break; } } return '"'.$ascii.'"'; case 'array': /* * As per JSON spec if any array key is not an integer * we must treat the whole array as an object. We * also try to catch a sparsely populated associative * array with numeric keys here because some JS engines * will create an array with empty indexes up to * max_index which can cause memory issues and because * the keys, which may be relevant, will be remapped * otherwise. * * As per the ECMA and JSON specification an object may * have any string as a property. Unfortunately due to * a hole in the ECMA specification if the key is a * ECMA reserved word or starts with a digit the * parameter is only accessible using ECMAScript's * bracket notation. / // treat as a JSON object if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) { $properties = array_map(array($this, 'name_value'), array_keys($var), array_values($var)); foreach($properties as $property) { if(Services_JSON::isError($property)) { return $property; } } return '{' . join(',', $properties) . '}'; } // treat it like a regular array $elements = array_map(array($this, '_encode'), $var); foreach($elements as $element) { if(Services_JSON::isError($element)) { return $element; } } return '[' . join(',', $elements) . ']'; case 'object': // support toJSON methods. if (($this->use & SERVICES_JSON_USE_TO_JSON) && method_exists($var, 'toJSON')) { // this may end up allowing unlimited recursion // so we check the return value to make sure it's not got the same method. $recode = $var->toJSON(); if (method_exists($recode, 'toJSON')) { return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS) ? 'null' : new Services_JSON_Error(get_class($var). " toJSON returned an object with a toJSON method."); } return $this->_encode( $recode ); } $vars = get_object_vars($var); $properties = array_map(array($this, 'name_value'), array_keys($vars), array_values($vars)); foreach($properties as $property) { if(Services_JSON::isError($property)) { return $property; } } return '{' . join(',', $properties) . '}'; default: return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS) ? 'null' : new Services_JSON_Error(gettype($var)." can not be encoded as JSON string"); } } /* * array-walking function for use in generating JSON-formatted name-value pairs * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param string $name name of key to use * @param mixed $value reference to an array element to be encoded * * @return string JSON-formatted name-value pair, like '"name":value' * @access private / function name_value($name, $value) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); $encoded_value = $this->_encode($value); if(Services_JSON::isError($encoded_value)) { return $encoded_value; } return $this->_encode((string) $name) . ':' . $encoded_value; } /* * reduce a string by removing leading and trailing comments and whitespace * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param $str string string value to strip of comments and whitespace * * @return string string value stripped of comments and whitespace * @access private / function reduce_string($str) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); $str = preg_replace(array( // eliminate single line comments in '// ...' form '#^\s//(.+)$#m', // eliminate multi-line comments in '/* ... /' form, at start of string '#^\s/\(.+)\/#Us', // eliminate multi-line comments in '/* ... /' form, at end of string '#/\(.+)\/\s$#Us' ), '', $str); // eliminate extraneous space return trim($str); } /** * decodes a JSON string into appropriate variable * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param string $str JSON-formatted string * * @return mixed number, boolean, string, array, or object * corresponding to given JSON input string. * See argument 1 to Services_JSON() above for object-output behavior. * Note that decode() always returns strings * in ASCII or UTF-8 format! * @access public / function decode($str) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); $str = $this->reduce_string($str); switch (strtolower($str)) { case 'true': return true; case 'false': return false; case 'null': return null; default: $m = array(); if (is_numeric($str)) { // Lookie-loo, it's a number // This would work on its own, but I'm trying to be // good about returning integers where appropriate: // return (float)$str; // Return float or int, as appropriate return ((float)$str == (integer)$str) ? (integer)$str : (float)$str; } elseif (preg_match('/^("\|\').(\1)$/s', $str, $m) && $m[1] == $m[2]) { // STRINGS RETURNED IN UTF-8 FORMAT $delim = $this->substr8($str, 0, 1); $chrs = $this->substr8($str, 1, -1); $utf8 = ''; $strlen_chrs = $this->strlen8($chrs); for ($c = 0; $c < $strlen_chrs; ++$c) { $substr_chrs_c_2 = $this->substr8($chrs, $c, 2); $ord_chrs_c = ord($chrs[$c]); switch (true) { case $substr_chrs_c_2 == '\b': $utf8 .= chr(0x08); ++$c; break; case $substr_chrs_c_2 == '\t': $utf8 .= chr(0x09); ++$c; break; case $substr_chrs_c_2 == '\n': $utf8 .= chr(0x0A); ++$c; break; case $substr_chrs_c_2 == '\f': $utf8 .= chr(0x0C); ++$c; break; case $substr_chrs_c_2 == '\r': $utf8 .= chr(0x0D); ++$c; break; case $substr_chrs_c_2 == '\\"': case $substr_chrs_c_2 == '\\\'': case $substr_chrs_c_2 == '\\\\': case $substr_chrs_c_2 == '\\/': if (($delim == '"' && $substr_chrs_c_2 != '\\\'') \|\| ($delim == "'" && $substr_chrs_c_2 != '\\"')) { $utf8 .= $chrs[++$c]; } break; case preg_match('/\\\u[0-9A-F]{4}/i', $this->substr8($chrs, $c, 6)): // single, escaped unicode character $utf16 = chr(hexdec($this->substr8($chrs, ($c + 2), 2))) . chr(hexdec($this->substr8($chrs, ($c + 4), 2))); $utf8 .= $this->utf162utf8($utf16); $c += 5; break; case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F): $utf8 .= $chrs[$c]; break; case ($ord_chrs_c & 0xE0) == 0xC0: // characters U-00000080 - U-000007FF, mask 110XXXXX //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= $this->substr8($chrs, $c, 2); ++$c; break; case ($ord_chrs_c & 0xF0) == 0xE0: // characters U-00000800 - U-0000FFFF, mask 1110XXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= $this->substr8($chrs, $c, 3); $c += 2; break; case ($ord_chrs_c & 0xF8) == 0xF0: // characters U-00010000 - U-001FFFFF, mask 11110XXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= $this->substr8($chrs, $c, 4); $c += 3; break; case ($ord_chrs_c & 0xFC) == 0xF8: // characters U-00200000 - U-03FFFFFF, mask 111110XX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= $this->substr8($chrs, $c, 5); $c += 4; break; case ($ord_chrs_c & 0xFE) == 0xFC: // characters U-04000000 - U-7FFFFFFF, mask 1111110X // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $utf8 .= $this->substr8($chrs, $c, 6); $c += 5; break; } } return $utf8; } elseif (preg_match('/^\[.\]$/s', $str) \|\| preg_match('/^\{.\}$/s', $str)) { // array, or object notation if ($str[0] == '[') { $stk = array(SERVICES_JSON_IN_ARR); $arr = array(); } else { if ($this->use & SERVICES_JSON_LOOSE_TYPE) { $stk = array(SERVICES_JSON_IN_OBJ); $obj = array(); } else { $stk = array(SERVICES_JSON_IN_OBJ); $obj = new stdClass(); } } array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => 0, 'delim' => false)); $chrs = $this->substr8($str, 1, -1); $chrs = $this->reduce_string($chrs); if ($chrs == '') { if (reset($stk) == SERVICES_JSON_IN_ARR) { return $arr; } else { return $obj; } } //print("\nparsing {$chrs}\n"); $strlen_chrs = $this->strlen8($chrs); for ($c = 0; $c <= $strlen_chrs; ++$c) { $top = end($stk); $substr_chrs_c_2 = $this->substr8($chrs, $c, 2); if (($c == $strlen_chrs) \|\| (($chrs[$c] == ',') && ($top['what'] == SERVICES_JSON_SLICE))) { // found a comma that is not inside a string, array, etc., // OR we've reached the end of the character list $slice = $this->substr8($chrs, $top['where'], ($c - $top['where'])); array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false)); //print("Found split at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n"); if (reset($stk) == SERVICES_JSON_IN_ARR) { // we are in an array, so just push an element onto the stack array_push($arr, $this->decode($slice)); } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) { // we are in an object, so figure // out the property name and set an // element in an associative array, // for now $parts = array(); if (preg_match('/^\s(["\'].[^\\\]["\'])\s:/Uis', $slice, $parts)) { // "name":value pair $key = $this->decode($parts[1]); $val = $this->decode(trim(substr($slice, strlen($parts[0])), ", \t\n\r\0\x0B")); if ($this->use & SERVICES_JSON_LOOSE_TYPE) { $obj[$key] = $val; } else { $obj->$key = $val; } } elseif (preg_match('/^\s(\w+)\s:/Uis', $slice, $parts)) { // name:value pair, where name is unquoted $key = $parts[1]; $val = $this->decode(trim(substr($slice, strlen($parts[0])), ", \t\n\r\0\x0B")); if ($this->use & SERVICES_JSON_LOOSE_TYPE) { $obj[$key] = $val; } else { $obj->$key = $val; } } } } elseif ((($chrs[$c] == '"') \|\| ($chrs[$c] == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) { // found a quote, and we are not inside a string array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs[$c])); //print("Found start of string at {$c}\n"); } elseif (($chrs[$c] == $top['delim']) && ($top['what'] == SERVICES_JSON_IN_STR) && (($this->strlen8($this->substr8($chrs, 0, $c)) - $this->strlen8(rtrim($this->substr8($chrs, 0, $c), '\\'))) % 2 != 1)) { // found a quote, we're in a string, and it's not escaped // we know that it's not escaped because there is _not_ an // odd number of backslashes at the end of the string so far array_pop($stk); //print("Found end of string at {$c}: ".$this->substr8($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n"); } elseif (($chrs[$c] == '[') && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) { // found a left-bracket, and we are in an array, object, or slice array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false)); //print("Found start of array at {$c}\n"); } elseif (($chrs[$c] == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) { // found a right-bracket, and we're in an array array_pop($stk); //print("Found end of array at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n"); } elseif (($chrs[$c] == '{') && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) { // found a left-brace, and we are in an array, object, or slice array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false)); //print("Found start of object at {$c}\n"); } elseif (($chrs[$c] == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) { // found a right-brace, and we're in an object array_pop($stk); //print("Found end of object at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n"); } elseif (($substr_chrs_c_2 == '/') && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) { // found a comment start, and we are in an array, object, or slice array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false)); $c++; //print("Found start of comment at {$c}\n"); } elseif (($substr_chrs_c_2 == '/') && ($top['what'] == SERVICES_JSON_IN_CMT)) { // found a comment end, and we're in one now array_pop($stk); $c++; for ($i = $top['where']; $i <= $c; ++$i) $chrs = substr_replace($chrs, ' ', $i, 1); //print("Found end of comment at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n"); } } if (reset($stk) == SERVICES_JSON_IN_ARR) { return $arr; } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) { return $obj; } } } } /* * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @todo Ultimately, this should just call PEAR::isError() / function isError($data, $code = null) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); if (class_exists('pear')) { return PEAR::isError($data, $code); } elseif (is_object($data) && ($data instanceof services_json_error \|\| is_subclass_of($data, 'services_json_error'))) { return true; } return false; } /* * Calculates length of string in bytes * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param string * @return integer length / function strlen8( $str ) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); if ( $this->_mb_strlen ) { return mb_strlen( $str, "8bit" ); } return strlen( $str ); } /* * Returns part of a string, interpreting $start and $length as number of bytes. * * @deprecated 5.3.0 Use the PHP native JSON extension instead. * * @param string * @param integer start * @param integer length * @return integer length / function substr8( $string, $start, $length=false ) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); if ( $length === false ) { $length = $this->strlen8( $string ) - $start; } if ( $this->_mb_substr ) { return mb_substr( $string, $start, $length, "8bit" ); } return substr( $string, $start, $length ); } } if (class_exists('PEAR_Error')) { class Services_JSON_Error extends PEAR_Error { /* * PHP5 constructor. * * @deprecated 5.3.0 Use the PHP native JSON extension instead. / function __construct($message = 'unknown error', $code = null, $mode = null, $options = null, $userinfo = null) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); parent::PEAR_Error($message, $code, $mode, $options, $userinfo); } /* * PHP4 constructor. * * @deprecated 5.3.0 Use __construct() instead. * * @see Services_JSON_Error::__construct() / public function Services_JSON_Error($message = 'unknown error', $code = null, $mode = null, $options = null, $userinfo = null) { _deprecated_constructor( 'Services_JSON_Error', '5.3.0', get_class( $this ) ); self::__construct($message, $code, $mode, $options, $userinfo); } } } else { /* * @todo Ultimately, this class shall be descended from PEAR_Error / class Services_JSON_Error { /* * PHP5 constructor. * * @deprecated 5.3.0 Use the PHP native JSON extension instead. / function __construct( $message = 'unknown error', $code = null, $mode = null, $options = null, $userinfo = null ) { _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' ); } /* * PHP4 constructor. * * @deprecated 5.3.0 Use __construct() instead. * * @see Services_JSON_Error::__construct() */ public function Services_JSON_Error( $message = 'unknown error', $code = null, $mode = null, $options = null, $userinfo = null ) { _deprecated_constructor( 'Services_JSON_Error', '5.3.0', get_class( $this ) ); self::__construct( $message, $code, $mode, $options, $userinfo ); } } } endif; Back

Edit File : class-json.php | Size : 42.66 KB

<?php
_deprecated_file( basename( __FILE__ ), '5.3.0', '', 'The PHP native JSON extension is now a requirement.' );

if ( ! class_exists( 'Services_JSON' ) ) :
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
 * Converts to and from JSON format.
 *
 * JSON (JavaScript Object Notation) is a lightweight data-interchange
 * format. It is easy for humans to read and write. It is easy for machines
 * to parse and generate. It is based on a subset of the JavaScript
 * Programming Language, Standard ECMA-262 3rd Edition - December 1999.
 * This feature can also be found in  Python. JSON is a text format that is
 * completely language independent but uses conventions that are familiar
 * to programmers of the C-family of languages, including C, C++, C#, Java,
 * JavaScript, Perl, TCL, and many others. These properties make JSON an
 * ideal data-interchange language.
 *
 * This package provides a simple encoder and decoder for JSON notation. It
 * is intended for use with client-side JavaScript applications that make
 * use of HTTPRequest to perform server communication functions - data can
 * be encoded into JSON notation for use in a client-side javaScript, or
 * decoded from incoming JavaScript requests. JSON format is native to
 * JavaScript, and can be directly eval()'ed with no further parsing
 * overhead
 *
 * All strings should be in ASCII or UTF-8 format!
 *
 * LICENSE: Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met: Redistributions of source code must retain the
 * above copyright notice, this list of conditions and the following
 * disclaimer. Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
 * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 *
 * @category
 * @package     Services_JSON
 * @author      Michal Migurski <mike-json@teczno.com>
 * @author      Matt Knapp <mdknapp[at]gmail[dot]com>
 * @author      Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
 * @copyright   2005 Michal Migurski
 * @version     CVS: $Id: JSON.php 305040 2010-11-02 23:19:03Z alan_k $
 * @license     https://www.opensource.org/licenses/bsd-license.php
 * @link        https://pear.php.net/pepr/pepr-proposal-show.php?id=198
 */

/**
 * Marker constant for Services_JSON::decode(), used to flag stack state
 */
define('SERVICES_JSON_SLICE',   1);

/**
 * Marker constant for Services_JSON::decode(), used to flag stack state
 */
define('SERVICES_JSON_IN_STR',  2);

/**
 * Marker constant for Services_JSON::decode(), used to flag stack state
 */
define('SERVICES_JSON_IN_ARR',  3);

/**
 * Marker constant for Services_JSON::decode(), used to flag stack state
 */
define('SERVICES_JSON_IN_OBJ',  4);

/**
 * Marker constant for Services_JSON::decode(), used to flag stack state
 */
define('SERVICES_JSON_IN_CMT', 5);

/**
 * Behavior switch for Services_JSON::decode()
 */
define('SERVICES_JSON_LOOSE_TYPE', 16);

/**
 * Behavior switch for Services_JSON::decode()
 */
define('SERVICES_JSON_SUPPRESS_ERRORS', 32);

/**
 * Behavior switch for Services_JSON::decode()
 */
define('SERVICES_JSON_USE_TO_JSON', 64);

/**
 * Converts to and from JSON format.
 *
 * Brief example of use:
 *
 * <code>
 * // create a new instance of Services_JSON
 * $json = new Services_JSON();
 *
 * // convert a complex value to JSON notation, and send it to the browser
 * $value = array('foo', 'bar', array(1, 2, 'baz'), array(3, array(4)));
 * $output = $json->encode($value);
 *
 * print($output);
 * // prints: ["foo","bar",[1,2,"baz"],[3,[4]]]
 *
 * // accept incoming POST data, assumed to be in JSON notation
 * $input = file_get_contents('php://input', 1000000);
 * $value = $json->decode($input);
 * </code>
 */
class Services_JSON
{
   /**
    * Object behavior flags.
    *
    * @var int
    */
    public $use;

// private - cache the mbstring lookup results..
    var $_mb_strlen = false;
    var $_mb_substr = false;
    var $_mb_convert_encoding = false;

/**
    * constructs a new JSON instance
    *
    * @deprecated 5.3.0 Use the PHP native JSON extension instead.
    *
    * @param    int     $use    object behavior flags; combine with boolean-OR
    *
    *                           possible values:
    *                           - SERVICES_JSON_LOOSE_TYPE:  loose typing.
    *                                   "{...}" syntax creates associative arrays
    *                                   instead of objects in decode().
    *                           - SERVICES_JSON_SUPPRESS_ERRORS:  error suppression.
    *                                   Values which can't be encoded (e.g. resources)
    *                                   appear as NULL instead of throwing errors.
    *                                   By default, a deeply-nested resource will
    *                                   bubble up with an error, so all return values
    *                                   from encode() should be checked with isError()
    *                           - SERVICES_JSON_USE_TO_JSON:  call toJSON when serializing objects
    *                                   It serializes the return value from the toJSON call rather 
    *                                   than the object itself, toJSON can return associative arrays, 
    *                                   strings or numbers, if you return an object, make sure it does
    *                                   not have a toJSON method, otherwise an error will occur.
    */
    function __construct( $use = 0 )
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

$this->use = $use;
        $this->_mb_strlen            = function_exists('mb_strlen');
        $this->_mb_convert_encoding  = function_exists('mb_convert_encoding');
        $this->_mb_substr            = function_exists('mb_substr');
    }

/**
     * PHP4 constructor.
     *
     * @deprecated 5.3.0 Use __construct() instead.
     *
     * @see Services_JSON::__construct()
     */
    public function Services_JSON( $use = 0 ) {
        _deprecated_constructor( 'Services_JSON', '5.3.0', get_class( $this ) );
        self::__construct( $use );
    }

/**
    * convert a string from one UTF-16 char to one UTF-8 char
    *
    * Normally should be handled by mb_convert_encoding, but
    * provides a slower PHP-only method for installations
    * that lack the multibye string extension.
    *
    * @deprecated 5.3.0 Use the PHP native JSON extension instead.
    *
    * @param    string  $utf16  UTF-16 character
    * @return   string  UTF-8 character
    * @access   private
    */
    function utf162utf8($utf16)
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

// oh please oh please oh please oh please oh please
        if($this->_mb_convert_encoding) {
            return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
        }

$bytes = (ord($utf16[0]) << 8) | ord($utf16[1]);

switch(true) {
            case ((0x7F & $bytes) == $bytes):
                // this case should never be reached, because we are in ASCII range
                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                return chr(0x7F & $bytes);

case (0x07FF & $bytes) == $bytes:
                // return a 2-byte UTF-8 character
                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                return chr(0xC0 | (($bytes >> 6) & 0x1F))
                     . chr(0x80 | ($bytes & 0x3F));

case (0xFFFF & $bytes) == $bytes:
                // return a 3-byte UTF-8 character
                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                return chr(0xE0 | (($bytes >> 12) & 0x0F))
                     . chr(0x80 | (($bytes >> 6) & 0x3F))
                     . chr(0x80 | ($bytes & 0x3F));
        }

// ignoring UTF-32 for now, sorry
        return '';
    }

/**
    * convert a string from one UTF-8 char to one UTF-16 char
    *
    * Normally should be handled by mb_convert_encoding, but
    * provides a slower PHP-only method for installations
    * that lack the multibyte string extension.
    *
    * @deprecated 5.3.0 Use the PHP native JSON extension instead.
    *
    * @param    string  $utf8   UTF-8 character
    * @return   string  UTF-16 character
    * @access   private
    */
    function utf82utf16($utf8)
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

// oh please oh please oh please oh please oh please
        if($this->_mb_convert_encoding) {
            return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
        }

switch($this->strlen8($utf8)) {
            case 1:
                // this case should never be reached, because we are in ASCII range
                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                return $utf8;

case 2:
                // return a UTF-16 character from a 2-byte UTF-8 char
                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                return chr(0x07 & (ord($utf8[0]) >> 2))
                     . chr((0xC0 & (ord($utf8[0]) << 6))
                         | (0x3F & ord($utf8[1])));

case 3:
                // return a UTF-16 character from a 3-byte UTF-8 char
                // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                return chr((0xF0 & (ord($utf8[0]) << 4))
                         | (0x0F & (ord($utf8[1]) >> 2)))
                     . chr((0xC0 & (ord($utf8[1]) << 6))
                         | (0x7F & ord($utf8[2])));
        }

// ignoring UTF-32 for now, sorry
        return '';
    }

/**
    * encodes an arbitrary variable into JSON format (and sends JSON Header)
    *
    * @deprecated 5.3.0 Use the PHP native JSON extension instead.
    *
    * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
    *                           see argument 1 to Services_JSON() above for array-parsing behavior.
    *                           if var is a string, note that encode() always expects it
    *                           to be in ASCII or UTF-8 format!
    *
    * @return   mixed   JSON string representation of input var or an error if a problem occurs
    * @access   public
    */
    function encode($var)
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

header('Content-Type: application/json');
        return $this->encodeUnsafe($var);
    }
    /**
    * encodes an arbitrary variable into JSON format without JSON Header - warning - may allow XSS!!!!)
    *
    * @deprecated 5.3.0 Use the PHP native JSON extension instead.
    *
    * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
    *                           see argument 1 to Services_JSON() above for array-parsing behavior.
    *                           if var is a string, note that encode() always expects it
    *                           to be in ASCII or UTF-8 format!
    *
    * @return   mixed   JSON string representation of input var or an error if a problem occurs
    * @access   public
    */
    function encodeUnsafe($var)
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

// see bug #16908 - regarding numeric locale printing
        $lc = setlocale(LC_NUMERIC, 0);
        setlocale(LC_NUMERIC, 'C');
        $ret = $this->_encode($var);
        setlocale(LC_NUMERIC, $lc);
        return $ret;
        
    }
    /**
    * PRIVATE CODE that does the work of encodes an arbitrary variable into JSON format 
    *
    * @deprecated 5.3.0 Use the PHP native JSON extension instead.
    *
    * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
    *                           see argument 1 to Services_JSON() above for array-parsing behavior.
    *                           if var is a string, note that encode() always expects it
    *                           to be in ASCII or UTF-8 format!
    *
    * @return   mixed   JSON string representation of input var or an error if a problem occurs
    * @access   public
    */
    function _encode($var) 
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

switch (gettype($var)) {
            case 'boolean':
                return $var ? 'true' : 'false';

case 'NULL':
                return 'null';

case 'integer':
                return (int) $var;

case 'double':
            case 'float':
                return  (float) $var;

case 'string':
                // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
                $ascii = '';
                $strlen_var = $this->strlen8($var);

/*
                * Iterate over every character in the string,
                * escaping with a slash or encoding to UTF-8 where necessary
                */
                for ($c = 0; $c < $strlen_var; ++$c) {

$ord_var_c = ord($var[$c]);

switch (true) {
                        case $ord_var_c == 0x08:
                            $ascii .= '\b';
                            break;
                        case $ord_var_c == 0x09:
                            $ascii .= '\t';
                            break;
                        case $ord_var_c == 0x0A:
                            $ascii .= '\n';
                            break;
                        case $ord_var_c == 0x0C:
                            $ascii .= '\f';
                            break;
                        case $ord_var_c == 0x0D:
                            $ascii .= '\r';
                            break;

case $ord_var_c == 0x22:
                        case $ord_var_c == 0x2F:
                        case $ord_var_c == 0x5C:
                            // double quote, slash, slosh
                            $ascii .= '\\'.$var[$c];
                            break;

case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
                            // characters U-00000000 - U-0000007F (same as ASCII)
                            $ascii .= $var[$c];
                            break;

case (($ord_var_c & 0xE0) == 0xC0):
                            // characters U-00000080 - U-000007FF, mask 110XXXXX
                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                            if ($c+1 >= $strlen_var) {
                                $c += 1;
                                $ascii .= '?';
                                break;
                            }
                            
                            $char = pack('C*', $ord_var_c, ord($var[$c + 1]));
                            $c += 1;
                            $utf16 = $this->utf82utf16($char);
                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
                            break;

case (($ord_var_c & 0xF0) == 0xE0):
                            if ($c+2 >= $strlen_var) {
                                $c += 2;
                                $ascii .= '?';
                                break;
                            }
                            // characters U-00000800 - U-0000FFFF, mask 1110XXXX
                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                            $char = pack('C*', $ord_var_c,
                                         @ord($var[$c + 1]),
                                         @ord($var[$c + 2]));
                            $c += 2;
                            $utf16 = $this->utf82utf16($char);
                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
                            break;

case (($ord_var_c & 0xF8) == 0xF0):
                            if ($c+3 >= $strlen_var) {
                                $c += 3;
                                $ascii .= '?';
                                break;
                            }
                            // characters U-00010000 - U-001FFFFF, mask 11110XXX
                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                            $char = pack('C*', $ord_var_c,
                                         ord($var[$c + 1]),
                                         ord($var[$c + 2]),
                                         ord($var[$c + 3]));
                            $c += 3;
                            $utf16 = $this->utf82utf16($char);
                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
                            break;

case (($ord_var_c & 0xFC) == 0xF8):
                            // characters U-00200000 - U-03FFFFFF, mask 111110XX
                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                            if ($c+4 >= $strlen_var) {
                                $c += 4;
                                $ascii .= '?';
                                break;
                            }
                            $char = pack('C*', $ord_var_c,
                                         ord($var[$c + 1]),
                                         ord($var[$c + 2]),
                                         ord($var[$c + 3]),
                                         ord($var[$c + 4]));
                            $c += 4;
                            $utf16 = $this->utf82utf16($char);
                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
                            break;

case (($ord_var_c & 0xFE) == 0xFC):
                        if ($c+5 >= $strlen_var) {
                                $c += 5;
                                $ascii .= '?';
                                break;
                            }
                            // characters U-04000000 - U-7FFFFFFF, mask 1111110X
                            // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                            $char = pack('C*', $ord_var_c,
                                         ord($var[$c + 1]),
                                         ord($var[$c + 2]),
                                         ord($var[$c + 3]),
                                         ord($var[$c + 4]),
                                         ord($var[$c + 5]));
                            $c += 5;
                            $utf16 = $this->utf82utf16($char);
                            $ascii .= sprintf('\u%04s', bin2hex($utf16));
                            break;
                    }
                }
                return  '"'.$ascii.'"';

case 'array':
               /*
                * As per JSON spec if any array key is not an integer
                * we must treat the whole array as an object. We
                * also try to catch a sparsely populated associative
                * array with numeric keys here because some JS engines
                * will create an array with empty indexes up to
                * max_index which can cause memory issues and because
                * the keys, which may be relevant, will be remapped
                * otherwise.
                *
                * As per the ECMA and JSON specification an object may
                * have any string as a property. Unfortunately due to
                * a hole in the ECMA specification if the key is a
                * ECMA reserved word or starts with a digit the
                * parameter is only accessible using ECMAScript's
                * bracket notation.
                */

// treat as a JSON object
                if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
                    $properties = array_map(array($this, 'name_value'),
                                            array_keys($var),
                                            array_values($var));

foreach($properties as $property) {
                        if(Services_JSON::isError($property)) {
                            return $property;
                        }
                    }

return '{' . join(',', $properties) . '}';
                }

// treat it like a regular array
                $elements = array_map(array($this, '_encode'), $var);

foreach($elements as $element) {
                    if(Services_JSON::isError($element)) {
                        return $element;
                    }
                }

return '[' . join(',', $elements) . ']';

case 'object':
            
                // support toJSON methods.
                if (($this->use & SERVICES_JSON_USE_TO_JSON) && method_exists($var, 'toJSON')) {
                    // this may end up allowing unlimited recursion
                    // so we check the return value to make sure it's not got the same method.
                    $recode = $var->toJSON();
                    
                    if (method_exists($recode, 'toJSON')) {
                        
                        return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
                        ? 'null'
                        : new Services_JSON_Error(get_class($var).
                            " toJSON returned an object with a toJSON method.");
                            
                    }
                    
                    return $this->_encode( $recode );
                } 
                
                $vars = get_object_vars($var);
                
                $properties = array_map(array($this, 'name_value'),
                                        array_keys($vars),
                                        array_values($vars));

foreach($properties as $property) {
                    if(Services_JSON::isError($property)) {
                        return $property;
                    }
                }

return '{' . join(',', $properties) . '}';

default:
                return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
                    ? 'null'
                    : new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
        }
    }

/**
    * array-walking function for use in generating JSON-formatted name-value pairs
    *
    * @deprecated 5.3.0 Use the PHP native JSON extension instead.
    *
    * @param    string  $name   name of key to use
    * @param    mixed   $value  reference to an array element to be encoded
    *
    * @return   string  JSON-formatted name-value pair, like '"name":value'
    * @access   private
    */
    function name_value($name, $value)
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

$encoded_value = $this->_encode($value);

if(Services_JSON::isError($encoded_value)) {
            return $encoded_value;
        }

return $this->_encode((string) $name) . ':' . $encoded_value;
    }

/**
    * reduce a string by removing leading and trailing comments and whitespace
    *
    * @deprecated 5.3.0 Use the PHP native JSON extension instead.
    *
    * @param    $str    string      string value to strip of comments and whitespace
    *
    * @return   string  string value stripped of comments and whitespace
    * @access   private
    */
    function reduce_string($str)
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

$str = preg_replace(array(

// eliminate single line comments in '// ...' form
                '#^\s*//(.+)$#m',

// eliminate multi-line comments in '/* ... */' form, at start of string
                '#^\s*/\*(.+)\*/#Us',

// eliminate multi-line comments in '/* ... */' form, at end of string
                '#/\*(.+)\*/\s*$#Us'

), '', $str);

// eliminate extraneous space
        return trim($str);
    }

/**
    * decodes a JSON string into appropriate variable
    *
    * @deprecated 5.3.0 Use the PHP native JSON extension instead.
    *
    * @param    string  $str    JSON-formatted string
    *
    * @return   mixed   number, boolean, string, array, or object
    *                   corresponding to given JSON input string.
    *                   See argument 1 to Services_JSON() above for object-output behavior.
    *                   Note that decode() always returns strings
    *                   in ASCII or UTF-8 format!
    * @access   public
    */
    function decode($str)
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

$str = $this->reduce_string($str);

switch (strtolower($str)) {
            case 'true':
                return true;

case 'false':
                return false;

case 'null':
                return null;

default:
                $m = array();

if (is_numeric($str)) {
                    // Lookie-loo, it's a number

// This would work on its own, but I'm trying to be
                    // good about returning integers where appropriate:
                    // return (float)$str;

// Return float or int, as appropriate
                    return ((float)$str == (integer)$str)
                        ? (integer)$str
                        : (float)$str;

} elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
                    // STRINGS RETURNED IN UTF-8 FORMAT
                    $delim = $this->substr8($str, 0, 1);
                    $chrs = $this->substr8($str, 1, -1);
                    $utf8 = '';
                    $strlen_chrs = $this->strlen8($chrs);

for ($c = 0; $c < $strlen_chrs; ++$c) {

$substr_chrs_c_2 = $this->substr8($chrs, $c, 2);
                        $ord_chrs_c = ord($chrs[$c]);

switch (true) {
                            case $substr_chrs_c_2 == '\b':
                                $utf8 .= chr(0x08);
                                ++$c;
                                break;
                            case $substr_chrs_c_2 == '\t':
                                $utf8 .= chr(0x09);
                                ++$c;
                                break;
                            case $substr_chrs_c_2 == '\n':
                                $utf8 .= chr(0x0A);
                                ++$c;
                                break;
                            case $substr_chrs_c_2 == '\f':
                                $utf8 .= chr(0x0C);
                                ++$c;
                                break;
                            case $substr_chrs_c_2 == '\r':
                                $utf8 .= chr(0x0D);
                                ++$c;
                                break;

case $substr_chrs_c_2 == '\\"':
                            case $substr_chrs_c_2 == '\\\'':
                            case $substr_chrs_c_2 == '\\\\':
                            case $substr_chrs_c_2 == '\\/':
                                if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
                                   ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
                                    $utf8 .= $chrs[++$c];
                                }
                                break;

case preg_match('/\\\u[0-9A-F]{4}/i', $this->substr8($chrs, $c, 6)):
                                // single, escaped unicode character
                                $utf16 = chr(hexdec($this->substr8($chrs, ($c + 2), 2)))
                                       . chr(hexdec($this->substr8($chrs, ($c + 4), 2)));
                                $utf8 .= $this->utf162utf8($utf16);
                                $c += 5;
                                break;

case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
                                $utf8 .= $chrs[$c];
                                break;

case ($ord_chrs_c & 0xE0) == 0xC0:
                                // characters U-00000080 - U-000007FF, mask 110XXXXX
                                //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                                $utf8 .= $this->substr8($chrs, $c, 2);
                                ++$c;
                                break;

case ($ord_chrs_c & 0xF0) == 0xE0:
                                // characters U-00000800 - U-0000FFFF, mask 1110XXXX
                                // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                                $utf8 .= $this->substr8($chrs, $c, 3);
                                $c += 2;
                                break;

case ($ord_chrs_c & 0xF8) == 0xF0:
                                // characters U-00010000 - U-001FFFFF, mask 11110XXX
                                // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                                $utf8 .= $this->substr8($chrs, $c, 4);
                                $c += 3;
                                break;

case ($ord_chrs_c & 0xFC) == 0xF8:
                                // characters U-00200000 - U-03FFFFFF, mask 111110XX
                                // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                                $utf8 .= $this->substr8($chrs, $c, 5);
                                $c += 4;
                                break;

case ($ord_chrs_c & 0xFE) == 0xFC:
                                // characters U-04000000 - U-7FFFFFFF, mask 1111110X
                                // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
                                $utf8 .= $this->substr8($chrs, $c, 6);
                                $c += 5;
                                break;

}

return $utf8;

} elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
                    // array, or object notation

if ($str[0] == '[') {
                        $stk = array(SERVICES_JSON_IN_ARR);
                        $arr = array();
                    } else {
                        if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
                            $stk = array(SERVICES_JSON_IN_OBJ);
                            $obj = array();
                        } else {
                            $stk = array(SERVICES_JSON_IN_OBJ);
                            $obj = new stdClass();
                        }
                    }

array_push($stk, array('what'  => SERVICES_JSON_SLICE,
                                           'where' => 0,
                                           'delim' => false));

$chrs = $this->substr8($str, 1, -1);
                    $chrs = $this->reduce_string($chrs);

if ($chrs == '') {
                        if (reset($stk) == SERVICES_JSON_IN_ARR) {
                            return $arr;

} else {
                            return $obj;

}
                    }

//print("\nparsing {$chrs}\n");

$strlen_chrs = $this->strlen8($chrs);

for ($c = 0; $c <= $strlen_chrs; ++$c) {

$top = end($stk);
                        $substr_chrs_c_2 = $this->substr8($chrs, $c, 2);

if (($c == $strlen_chrs) || (($chrs[$c] == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
                            // found a comma that is not inside a string, array, etc.,
                            // OR we've reached the end of the character list
                            $slice = $this->substr8($chrs, $top['where'], ($c - $top['where']));
                            array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
                            //print("Found split at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n");

if (reset($stk) == SERVICES_JSON_IN_ARR) {
                                // we are in an array, so just push an element onto the stack
                                array_push($arr, $this->decode($slice));

} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
                                // we are in an object, so figure
                                // out the property name and set an
                                // element in an associative array,
                                // for now
                                $parts = array();
                                
                               if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:/Uis', $slice, $parts)) {
                                    // "name":value pair
                                    $key = $this->decode($parts[1]);
                                    $val = $this->decode(trim(substr($slice, strlen($parts[0])), ", \t\n\r\0\x0B"));
                                    if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
                                        $obj[$key] = $val;
                                    } else {
                                        $obj->$key = $val;
                                    }
                                } elseif (preg_match('/^\s*(\w+)\s*:/Uis', $slice, $parts)) {
                                    // name:value pair, where name is unquoted
                                    $key = $parts[1];
                                    $val = $this->decode(trim(substr($slice, strlen($parts[0])), ", \t\n\r\0\x0B"));

if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
                                        $obj[$key] = $val;
                                    } else {
                                        $obj->$key = $val;
                                    }
                                }

}

} elseif ((($chrs[$c] == '"') || ($chrs[$c] == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
                            // found a quote, and we are not inside a string
                            array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs[$c]));
                            //print("Found start of string at {$c}\n");

} elseif (($chrs[$c] == $top['delim']) &&
                                 ($top['what'] == SERVICES_JSON_IN_STR) &&
                                 (($this->strlen8($this->substr8($chrs, 0, $c)) - $this->strlen8(rtrim($this->substr8($chrs, 0, $c), '\\'))) % 2 != 1)) {
                            // found a quote, we're in a string, and it's not escaped
                            // we know that it's not escaped because there is _not_ an
                            // odd number of backslashes at the end of the string so far
                            array_pop($stk);
                            //print("Found end of string at {$c}: ".$this->substr8($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");

} elseif (($chrs[$c] == '[') &&
                                 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
                            // found a left-bracket, and we are in an array, object, or slice
                            array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
                            //print("Found start of array at {$c}\n");

} elseif (($chrs[$c] == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
                            // found a right-bracket, and we're in an array
                            array_pop($stk);
                            //print("Found end of array at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n");

} elseif (($chrs[$c] == '{') &&
                                 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
                            // found a left-brace, and we are in an array, object, or slice
                            array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
                            //print("Found start of object at {$c}\n");

} elseif (($chrs[$c] == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
                            // found a right-brace, and we're in an object
                            array_pop($stk);
                            //print("Found end of object at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n");

} elseif (($substr_chrs_c_2 == '/*') &&
                                 in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
                            // found a comment start, and we are in an array, object, or slice
                            array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
                            $c++;
                            //print("Found start of comment at {$c}\n");

} elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
                            // found a comment end, and we're in one now
                            array_pop($stk);
                            $c++;

for ($i = $top['where']; $i <= $c; ++$i)
                                $chrs = substr_replace($chrs, ' ', $i, 1);

//print("Found end of comment at {$c}: ".$this->substr8($chrs, $top['where'], (1 + $c - $top['where']))."\n");

}

if (reset($stk) == SERVICES_JSON_IN_ARR) {
                        return $arr;

} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
                        return $obj;

}

}
        }
    }

/**
     * @deprecated 5.3.0 Use the PHP native JSON extension instead.
     *
     * @todo Ultimately, this should just call PEAR::isError()
     */
    function isError($data, $code = null)
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

if (class_exists('pear')) {
            return PEAR::isError($data, $code);
        } elseif (is_object($data) && ($data instanceof services_json_error ||
                                 is_subclass_of($data, 'services_json_error'))) {
            return true;
        }

return false;
    }
    
    /**
     * Calculates length of string in bytes
     *
     * @deprecated 5.3.0 Use the PHP native JSON extension instead.
     *
     * @param string
     * @return integer length
     */
    function strlen8( $str ) 
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

if ( $this->_mb_strlen ) {
            return mb_strlen( $str, "8bit" );
        }
        return strlen( $str );
    }
    
    /**
     * Returns part of a string, interpreting $start and $length as number of bytes.
     *
     * @deprecated 5.3.0 Use the PHP native JSON extension instead.
     *
     * @param string
     * @param integer start
     * @param integer length
     * @return integer length
     */
    function substr8( $string, $start, $length=false ) 
    {
        _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

if ( $length === false ) {
            $length = $this->strlen8( $string ) - $start;
        }
        if ( $this->_mb_substr ) {
            return mb_substr( $string, $start, $length, "8bit" );
        }
        return substr( $string, $start, $length );
    }

}

if (class_exists('PEAR_Error')) {

class Services_JSON_Error extends PEAR_Error
    {
        /**
         * PHP5 constructor.
         *
         * @deprecated 5.3.0 Use the PHP native JSON extension instead.
         */
        function __construct($message = 'unknown error', $code = null,
                                     $mode = null, $options = null, $userinfo = null)
        {
            _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
        }

/**
         * PHP4 constructor.
         *
         * @deprecated 5.3.0 Use __construct() instead.
         *
         * @see Services_JSON_Error::__construct()
         */
        public function Services_JSON_Error($message = 'unknown error', $code = null,
                                     $mode = null, $options = null, $userinfo = null) {
            _deprecated_constructor( 'Services_JSON_Error', '5.3.0', get_class( $this ) );
            self::__construct($message, $code, $mode, $options, $userinfo);
        }
    }

} else {

/**
     * @todo Ultimately, this class shall be descended from PEAR_Error
     */
    class Services_JSON_Error
    {
        /**
         * PHP5 constructor.
         *
         * @deprecated 5.3.0 Use the PHP native JSON extension instead.
         */
        function __construct( $message = 'unknown error', $code = null,
                                     $mode = null, $options = null, $userinfo = null )
        {
            _deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );
        }

/**
         * PHP4 constructor.
         *
         * @deprecated 5.3.0 Use __construct() instead.
         *
         * @see Services_JSON_Error::__construct()
         */
        public function Services_JSON_Error( $message = 'unknown error', $code = null,
                                         $mode = null, $options = null, $userinfo = null ) {
            _deprecated_constructor( 'Services_JSON_Error', '5.3.0', get_class( $this ) );
            self::__construct( $message, $code, $mode, $options, $userinfo );
        }
    }

}

endif;

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