2011-07-06 19:33:05 -04:00
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<?php
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2013-02-01 21:09:01 -05:00
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if ( ! class_exists( 'Services_JSON' ) ) :
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2011-07-06 19:33:05 -04:00
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Converts to and from JSON format.
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*
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* JSON (JavaScript Object Notation) is a lightweight data-interchange
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* format. It is easy for humans to read and write. It is easy for machines
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* to parse and generate. It is based on a subset of the JavaScript
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* Programming Language, Standard ECMA-262 3rd Edition - December 1999.
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* This feature can also be found in Python. JSON is a text format that is
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* completely language independent but uses conventions that are familiar
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* to programmers of the C-family of languages, including C, C++, C#, Java,
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* JavaScript, Perl, TCL, and many others. These properties make JSON an
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* ideal data-interchange language.
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*
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* This package provides a simple encoder and decoder for JSON notation. It
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* is intended for use with client-side Javascript applications that make
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* use of HTTPRequest to perform server communication functions - data can
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* be encoded into JSON notation for use in a client-side javascript, or
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* decoded from incoming Javascript requests. JSON format is native to
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* Javascript, and can be directly eval()'ed with no further parsing
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* overhead
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*
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* All strings should be in ASCII or UTF-8 format!
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*
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* LICENSE: Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met: Redistributions of source code must retain the
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* above copyright notice, this list of conditions and the following
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* disclaimer. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* @category
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2013-02-01 21:09:01 -05:00
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* @package Services_JSON
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* @author Michal Migurski <mike-json@teczno.com>
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* @author Matt Knapp <mdknapp[at]gmail[dot]com>
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* @author Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
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* @copyright 2005 Michal Migurski
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* @version CVS: $Id: JSON.php 305040 2010-11-02 23:19:03Z alan_k $
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* @license http://www.opensource.org/licenses/bsd-license.php
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* @link http://pear.php.net/pepr/pepr-proposal-show.php?id=198
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2011-07-06 19:33:05 -04:00
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*/
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/**
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* Marker constant for Services_JSON::decode(), used to flag stack state
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*/
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2013-02-01 21:09:01 -05:00
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define('SERVICES_JSON_SLICE', 1);
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2011-07-06 19:33:05 -04:00
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/**
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* Marker constant for Services_JSON::decode(), used to flag stack state
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*/
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define('SERVICES_JSON_IN_STR', 2);
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/**
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* Marker constant for Services_JSON::decode(), used to flag stack state
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*/
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define('SERVICES_JSON_IN_ARR', 3);
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/**
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* Marker constant for Services_JSON::decode(), used to flag stack state
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*/
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define('SERVICES_JSON_IN_OBJ', 4);
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/**
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* Marker constant for Services_JSON::decode(), used to flag stack state
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*/
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define('SERVICES_JSON_IN_CMT', 5);
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/**
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* Behavior switch for Services_JSON::decode()
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*/
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define('SERVICES_JSON_LOOSE_TYPE', 16);
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/**
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* Behavior switch for Services_JSON::decode()
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*/
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define('SERVICES_JSON_SUPPRESS_ERRORS', 32);
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2013-02-01 21:09:01 -05:00
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/**
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* Behavior switch for Services_JSON::decode()
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*/
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define('SERVICES_JSON_USE_TO_JSON', 64);
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2011-07-06 19:33:05 -04:00
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/**
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* Converts to and from JSON format.
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*
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* Brief example of use:
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*
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* <code>
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* // create a new instance of Services_JSON
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* $json = new Services_JSON();
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*
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* // convert a complexe value to JSON notation, and send it to the browser
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* $value = array('foo', 'bar', array(1, 2, 'baz'), array(3, array(4)));
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* $output = $json->encode($value);
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*
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* print($output);
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* // prints: ["foo","bar",[1,2,"baz"],[3,[4]]]
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*
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* // accept incoming POST data, assumed to be in JSON notation
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* $input = file_get_contents('php://input', 1000000);
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* $value = $json->decode($input);
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* </code>
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*/
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class Services_JSON
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{
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2013-02-01 21:09:01 -05:00
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/**
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* constructs a new JSON instance
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*
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* @param int $use object behavior flags; combine with boolean-OR
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*
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* possible values:
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* - SERVICES_JSON_LOOSE_TYPE: loose typing.
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* "{...}" syntax creates associative arrays
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* instead of objects in decode().
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* - SERVICES_JSON_SUPPRESS_ERRORS: error suppression.
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* Values which can't be encoded (e.g. resources)
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* appear as NULL instead of throwing errors.
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* By default, a deeply-nested resource will
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* bubble up with an error, so all return values
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* from encode() should be checked with isError()
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* - SERVICES_JSON_USE_TO_JSON: call toJSON when serializing objects
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* It serializes the return value from the toJSON call rather
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* than the object it'self, toJSON can return associative arrays,
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* strings or numbers, if you return an object, make sure it does
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* not have a toJSON method, otherwise an error will occur.
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*/
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function Services_JSON($use = 0)
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{
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$this->use = $use;
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$this->_mb_strlen = function_exists('mb_strlen');
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$this->_mb_convert_encoding = function_exists('mb_convert_encoding');
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$this->_mb_substr = function_exists('mb_substr');
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}
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// private - cache the mbstring lookup results..
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var $_mb_strlen = false;
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var $_mb_substr = false;
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var $_mb_convert_encoding = false;
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/**
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* convert a string from one UTF-16 char to one UTF-8 char
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*
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* Normally should be handled by mb_convert_encoding, but
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* provides a slower PHP-only method for installations
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* that lack the multibye string extension.
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*
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* @param string $utf16 UTF-16 character
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* @return string UTF-8 character
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* @access private
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*/
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function utf162utf8($utf16)
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{
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// oh please oh please oh please oh please oh please
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if($this->_mb_convert_encoding) {
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return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
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}
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$bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
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switch(true) {
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case ((0x7F & $bytes) == $bytes):
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// this case should never be reached, because we are in ASCII range
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr(0x7F & $bytes);
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case (0x07FF & $bytes) == $bytes:
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// return a 2-byte UTF-8 character
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr(0xC0 | (($bytes >> 6) & 0x1F))
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. chr(0x80 | ($bytes & 0x3F));
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case (0xFFFF & $bytes) == $bytes:
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// return a 3-byte UTF-8 character
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr(0xE0 | (($bytes >> 12) & 0x0F))
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. chr(0x80 | (($bytes >> 6) & 0x3F))
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. chr(0x80 | ($bytes & 0x3F));
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}
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// ignoring UTF-32 for now, sorry
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return '';
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}
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/**
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* convert a string from one UTF-8 char to one UTF-16 char
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*
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* Normally should be handled by mb_convert_encoding, but
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* provides a slower PHP-only method for installations
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* that lack the multibye string extension.
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*
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* @param string $utf8 UTF-8 character
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* @return string UTF-16 character
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* @access private
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*/
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function utf82utf16($utf8)
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{
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// oh please oh please oh please oh please oh please
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if($this->_mb_convert_encoding) {
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return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
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}
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switch($this->strlen8($utf8)) {
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case 1:
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// this case should never be reached, because we are in ASCII range
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return $utf8;
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case 2:
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// return a UTF-16 character from a 2-byte UTF-8 char
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr(0x07 & (ord($utf8{0}) >> 2))
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. chr((0xC0 & (ord($utf8{0}) << 6))
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| (0x3F & ord($utf8{1})));
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case 3:
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// return a UTF-16 character from a 3-byte UTF-8 char
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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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return chr((0xF0 & (ord($utf8{0}) << 4))
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| (0x0F & (ord($utf8{1}) >> 2)))
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. chr((0xC0 & (ord($utf8{1}) << 6))
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| (0x7F & ord($utf8{2})));
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}
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// ignoring UTF-32 for now, sorry
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return '';
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}
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/**
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* encodes an arbitrary variable into JSON format (and sends JSON Header)
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*
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* @param mixed $var any number, boolean, string, array, or object to be encoded.
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* see argument 1 to Services_JSON() above for array-parsing behavior.
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* if var is a strng, note that encode() always expects it
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* to be in ASCII or UTF-8 format!
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*
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* @return mixed JSON string representation of input var or an error if a problem occurs
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* @access public
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*/
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function encode($var)
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{
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header('Content-type: application/json');
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return $this->encodeUnsafe($var);
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}
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/**
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* encodes an arbitrary variable into JSON format without JSON Header - warning - may allow XSS!!!!)
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*
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* @param mixed $var any number, boolean, string, array, or object to be encoded.
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* see argument 1 to Services_JSON() above for array-parsing behavior.
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* if var is a strng, note that encode() always expects it
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* to be in ASCII or UTF-8 format!
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*
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* @return mixed JSON string representation of input var or an error if a problem occurs
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* @access public
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*/
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function encodeUnsafe($var)
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{
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// see bug #16908 - regarding numeric locale printing
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$lc = setlocale(LC_NUMERIC, 0);
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setlocale(LC_NUMERIC, 'C');
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$ret = $this->_encode($var);
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setlocale(LC_NUMERIC, $lc);
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return $ret;
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}
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/**
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* PRIVATE CODE that does the work of encodes an arbitrary variable into JSON format
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*
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* @param mixed $var any number, boolean, string, array, or object to be encoded.
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* see argument 1 to Services_JSON() above for array-parsing behavior.
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* if var is a strng, note that encode() always expects it
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* to be in ASCII or UTF-8 format!
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*
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* @return mixed JSON string representation of input var or an error if a problem occurs
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* @access public
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*/
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function _encode($var)
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{
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switch (gettype($var)) {
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case 'boolean':
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return $var ? 'true' : 'false';
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case 'NULL':
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return 'null';
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case 'integer':
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return (int) $var;
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case 'double':
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case 'float':
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return (float) $var;
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case 'string':
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// STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
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$ascii = '';
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$strlen_var = $this->strlen8($var);
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/*
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* 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 '"'.$ascii.'"';
|
|
|
|
|
|
|
|
|
|
case 'array':
|
|
|
|
|
/*
|
|
|
|
|
* As per JSON spec if any array key is not an integer
|
|
|
|
|
* we must treat the the whole array as an object. We
|
|
|
|
|
* also try to catch a sparsely populated associative
|
|
|
|
|
* array with numeric keys here because some JS engines
|
|
|
|
|
* will create an array with empty indexes up to
|
|
|
|
|
* max_index which can cause memory issues and because
|
|
|
|
|
* the keys, which may be relevant, will be remapped
|
|
|
|
|
* otherwise.
|
|
|
|
|
*
|
|
|
|
|
* As per the ECMA and JSON specification an object may
|
|
|
|
|
* have any string as a property. Unfortunately due to
|
|
|
|
|
* a hole in the ECMA specification if the key is a
|
|
|
|
|
* ECMA reserved word or starts with a digit the
|
|
|
|
|
* parameter is only accessible using ECMAScript's
|
|
|
|
|
* bracket notation.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
// treat as a JSON object
|
|
|
|
|
if (is_array($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 ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
|
|
|
|
|
? 'null'
|
|
|
|
|
: new Services_JSON_Error(class_name($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
|
|
|
|
|
*
|
|
|
|
|
* @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)
|
|
|
|
|
{
|
|
|
|
|
$encoded_value = $this->_encode($value);
|
|
|
|
|
|
|
|
|
|
if(Services_JSON::isError($encoded_value)) {
|
|
|
|
|
return $encoded_value;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return $this->_encode(strval($name)) . ':' . $encoded_value;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* reduce a string by removing leading and trailing comments and whitespace
|
|
|
|
|
*
|
|
|
|
|
* @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)
|
|
|
|
|
{
|
|
|
|
|
$str = preg_replace(array(
|
|
|
|
|
|
|
|
|
|
// eliminate single line comments in '// ...' form
|
|
|
|
|
'#^\s*//(.+)$#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
|
|
|
|
|
*
|
|
|
|
|
* @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)
|
|
|
|
|
{
|
|
|
|
|
$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, $c), '\\'))) % 2 != 1)) {
|
|
|
|
|
// found a quote, we're in a string, and it's not escaped
|
|
|
|
|
// we know that it's not escaped becase there is _not_ an
|
|
|
|
|
// odd number of backslashes at the end of the string so far
|
|
|
|
|
array_pop($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 $obj;
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* @todo Ultimately, this should just call PEAR::isError()
|
|
|
|
|
*/
|
|
|
|
|
function isError($data, $code = null)
|
|
|
|
|
{
|
|
|
|
|
if (class_exists('pear')) {
|
|
|
|
|
return PEAR::isError($data, $code);
|
|
|
|
|
} elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
|
|
|
|
|
is_subclass_of($data, 'services_json_error'))) {
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Calculates length of string in bytes
|
|
|
|
|
* @param string
|
|
|
|
|
* @return integer length
|
|
|
|
|
*/
|
|
|
|
|
function strlen8( $str )
|
|
|
|
|
{
|
|
|
|
|
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.
|
|
|
|
|
* @param string
|
|
|
|
|
* @param integer start
|
|
|
|
|
* @param integer length
|
|
|
|
|
* @return integer length
|
|
|
|
|
*/
|
|
|
|
|
function substr8( $string, $start, $length=false )
|
|
|
|
|
{
|
|
|
|
|
if ( $length === false ) {
|
|
|
|
|
$length = $this->strlen8( $string ) - $start;
|
|
|
|
|
}
|
|
|
|
|
if ( $this->_mb_substr ) {
|
|
|
|
|
return mb_substr( $string, $start, $length, "8bit" );
|
|
|
|
|
}
|
|
|
|
|
return substr( $string, $start, $length );
|
|
|
|
|
}
|
|
|
|
|
|
2011-07-06 19:33:05 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (class_exists('PEAR_Error')) {
|
|
|
|
|
|
2013-02-01 21:09:01 -05:00
|
|
|
class Services_JSON_Error extends PEAR_Error
|
|
|
|
|
{
|
|
|
|
|
function Services_JSON_Error($message = 'unknown error', $code = null,
|
|
|
|
|
$mode = null, $options = null, $userinfo = null)
|
|
|
|
|
{
|
|
|
|
|
parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
|
|
|
|
|
}
|
|
|
|
|
}
|
2011-07-06 19:33:05 -04:00
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
2013-02-01 21:09:01 -05:00
|
|
|
/**
|
|
|
|
|
* @todo Ultimately, this class shall be descended from PEAR_Error
|
|
|
|
|
*/
|
|
|
|
|
class Services_JSON_Error
|
|
|
|
|
{
|
|
|
|
|
function Services_JSON_Error($message = 'unknown error', $code = null,
|
|
|
|
|
$mode = null, $options = null, $userinfo = null)
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2011-07-06 19:33:05 -04:00
|
|
|
}
|
2013-02-01 21:09:01 -05:00
|
|
|
|
|
|
|
|
endif;
|
