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<?php
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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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* @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: $Id$
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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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*/
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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_SLICE', 1);
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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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/**
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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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/**
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* constructs a new JSON instance
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*
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* @param int $use object behavior flags; combine with boolean-OR
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*
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* possible values:
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* - SERVICES_JSON_LOOSE_TYPE: loose typing.
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* "{...}" syntax creates associative arrays
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* instead of objects in decode().
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* - SERVICES_JSON_SUPPRESS_ERRORS: error suppression.
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* Values which can't be encoded (e.g. resources)
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* appear as NULL instead of throwing errors.
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* By default, a deeply-nested resource will
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* bubble up with an error, so all return values
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* from encode() should be checked with isError()
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*/
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function Services_JSON($use = 0)
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{
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$this->use = $use;
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}
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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(function_exists('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(function_exists('mb_convert_encoding')) {
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return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
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}
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switch(strlen($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
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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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$strlen_var = strlen($var);
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/*
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* Iterate over every character in the string,
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* escaping with a slash or encoding to UTF-8 where necessary
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*/
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for ($c = 0; $c < $strlen_var; ++$c) {
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$ord_var_c = ord($var{$c});
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switch (true) {
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case $ord_var_c == 0x08:
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$ascii .= '\b';
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break;
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case $ord_var_c == 0x09:
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$ascii .= '\t';
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break;
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case $ord_var_c == 0x0A:
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$ascii .= '\n';
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break;
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case $ord_var_c == 0x0C:
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$ascii .= '\f';
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break;
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case $ord_var_c == 0x0D:
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$ascii .= '\r';
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break;
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282 |
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case $ord_var_c == 0x22:
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case $ord_var_c == 0x2F:
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case $ord_var_c == 0x5C:
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// double quote, slash, slosh
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$ascii .= '\\'.$var{$c};
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break;
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289 |
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290 |
case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
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// characters U-00000000 - U-0000007F (same as ASCII)
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292 |
$ascii .= $var{$c};
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break;
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294 |
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case (($ord_var_c & 0xE0) == 0xC0):
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296 |
// characters U-00000080 - U-000007FF, mask 110XXXXX
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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298 |
$char = pack('C*', $ord_var_c, ord($var{$c + 1}));
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299 |
$c += 1;
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300 |
$utf16 = $this->utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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303 |
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304 |
case (($ord_var_c & 0xF0) == 0xE0):
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// characters U-00000800 - U-0000FFFF, mask 1110XXXX
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306 |
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$char = pack('C*', $ord_var_c,
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308 |
ord($var{$c + 1}),
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ord($var{$c + 2}));
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310 |
$c += 2;
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311 |
$utf16 = $this->utf82utf16($char);
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312 |
$ascii .= sprintf('\u%04s', bin2hex($utf16));
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313 |
break;
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314 |
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315 |
case (($ord_var_c & 0xF8) == 0xF0):
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316 |
// characters U-00010000 - U-001FFFFF, mask 11110XXX
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317 |
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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318 |
$char = pack('C*', $ord_var_c,
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319 |
ord($var{$c + 1}),
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ord($var{$c + 2}),
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ord($var{$c + 3}));
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$c += 3;
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$utf16 = $this->utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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326 |
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327 |
case (($ord_var_c & 0xFC) == 0xF8):
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328 |
// characters U-00200000 - U-03FFFFFF, mask 111110XX
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329 |
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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330 |
$char = pack('C*', $ord_var_c,
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ord($var{$c + 1}),
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ord($var{$c + 2}),
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ord($var{$c + 3}),
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ord($var{$c + 4}));
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335 |
$c += 4;
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336 |
$utf16 = $this->utf82utf16($char);
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337 |
$ascii .= sprintf('\u%04s', bin2hex($utf16));
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338 |
break;
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339 |
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340 |
case (($ord_var_c & 0xFE) == 0xFC):
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341 |
// characters U-04000000 - U-7FFFFFFF, mask 1111110X
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342 |
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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343 |
$char = pack('C*', $ord_var_c,
|
|
|
344 |
ord($var{$c + 1}),
|
|
|
345 |
ord($var{$c + 2}),
|
|
|
346 |
ord($var{$c + 3}),
|
|
|
347 |
ord($var{$c + 4}),
|
|
|
348 |
ord($var{$c + 5}));
|
|
|
349 |
$c += 5;
|
|
|
350 |
$utf16 = $this->utf82utf16($char);
|
|
|
351 |
$ascii .= sprintf('\u%04s', bin2hex($utf16));
|
|
|
352 |
break;
|
|
|
353 |
}
|
|
|
354 |
}
|
|
|
355 |
|
|
|
356 |
return '"'.$ascii.'"';
|
|
|
357 |
|
|
|
358 |
case 'array':
|
|
|
359 |
/*
|
|
|
360 |
* As per JSON spec if any array key is not an integer
|
|
|
361 |
* we must treat the the whole array as an object. We
|
|
|
362 |
* also try to catch a sparsely populated associative
|
|
|
363 |
* array with numeric keys here because some JS engines
|
|
|
364 |
* will create an array with empty indexes up to
|
|
|
365 |
* max_index which can cause memory issues and because
|
|
|
366 |
* the keys, which may be relevant, will be remapped
|
|
|
367 |
* otherwise.
|
|
|
368 |
*
|
|
|
369 |
* As per the ECMA and JSON specification an object may
|
|
|
370 |
* have any string as a property. Unfortunately due to
|
|
|
371 |
* a hole in the ECMA specification if the key is a
|
|
|
372 |
* ECMA reserved word or starts with a digit the
|
|
|
373 |
* parameter is only accessible using ECMAScript's
|
|
|
374 |
* bracket notation.
|
|
|
375 |
*/
|
|
|
376 |
|
|
|
377 |
// treat as a JSON object
|
|
|
378 |
if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
|
|
|
379 |
$properties = array_map(array($this, 'name_value'),
|
|
|
380 |
array_keys($var),
|
|
|
381 |
array_values($var));
|
|
|
382 |
|
|
|
383 |
foreach($properties as $property) {
|
|
|
384 |
if(Services_JSON::isError($property)) {
|
|
|
385 |
return $property;
|
|
|
386 |
}
|
|
|
387 |
}
|
|
|
388 |
|
|
|
389 |
return '{' . join(',', $properties) . '}';
|
|
|
390 |
}
|
|
|
391 |
|
|
|
392 |
// treat it like a regular array
|
|
|
393 |
$elements = array_map(array($this, 'encode'), $var);
|
|
|
394 |
|
|
|
395 |
foreach($elements as $element) {
|
|
|
396 |
if(Services_JSON::isError($element)) {
|
|
|
397 |
return $element;
|
|
|
398 |
}
|
|
|
399 |
}
|
|
|
400 |
|
|
|
401 |
return '[' . join(',', $elements) . ']';
|
|
|
402 |
|
|
|
403 |
case 'object':
|
|
|
404 |
$vars = get_object_vars($var);
|
|
|
405 |
|
|
|
406 |
$properties = array_map(array($this, 'name_value'),
|
|
|
407 |
array_keys($vars),
|
|
|
408 |
array_values($vars));
|
|
|
409 |
|
|
|
410 |
foreach($properties as $property) {
|
|
|
411 |
if(Services_JSON::isError($property)) {
|
|
|
412 |
return $property;
|
|
|
413 |
}
|
|
|
414 |
}
|
|
|
415 |
|
|
|
416 |
return '{' . join(',', $properties) . '}';
|
|
|
417 |
|
|
|
418 |
default:
|
|
|
419 |
return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
|
|
|
420 |
? 'null'
|
|
|
421 |
: new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
|
|
|
422 |
}
|
|
|
423 |
}
|
|
|
424 |
|
|
|
425 |
/**
|
|
|
426 |
* array-walking function for use in generating JSON-formatted name-value pairs
|
|
|
427 |
*
|
|
|
428 |
* @param string $name name of key to use
|
|
|
429 |
* @param mixed $value reference to an array element to be encoded
|
|
|
430 |
*
|
|
|
431 |
* @return string JSON-formatted name-value pair, like '"name":value'
|
|
|
432 |
* @access private
|
|
|
433 |
*/
|
|
|
434 |
function name_value($name, $value)
|
|
|
435 |
{
|
|
|
436 |
$encoded_value = $this->encode($value);
|
|
|
437 |
|
|
|
438 |
if(Services_JSON::isError($encoded_value)) {
|
|
|
439 |
return $encoded_value;
|
|
|
440 |
}
|
|
|
441 |
|
|
|
442 |
return $this->encode(strval($name)) . ':' . $encoded_value;
|
|
|
443 |
}
|
|
|
444 |
|
|
|
445 |
/**
|
|
|
446 |
* reduce a string by removing leading and trailing comments and whitespace
|
|
|
447 |
*
|
|
|
448 |
* @param $str string string value to strip of comments and whitespace
|
|
|
449 |
*
|
|
|
450 |
* @return string string value stripped of comments and whitespace
|
|
|
451 |
* @access private
|
|
|
452 |
*/
|
|
|
453 |
function reduce_string($str)
|
|
|
454 |
{
|
|
|
455 |
$str = preg_replace(array(
|
|
|
456 |
|
|
|
457 |
// eliminate single line comments in '// ...' form
|
|
|
458 |
'#^\s*//(.+)$#m',
|
|
|
459 |
|
|
|
460 |
// eliminate multi-line comments in '/* ... */' form, at start of string
|
|
|
461 |
'#^\s*/\*(.+)\*/#Us',
|
|
|
462 |
|
|
|
463 |
// eliminate multi-line comments in '/* ... */' form, at end of string
|
|
|
464 |
'#/\*(.+)\*/\s*$#Us'
|
|
|
465 |
|
|
|
466 |
), '', $str);
|
|
|
467 |
|
|
|
468 |
// eliminate extraneous space
|
|
|
469 |
return trim($str);
|
|
|
470 |
}
|
|
|
471 |
|
|
|
472 |
/**
|
|
|
473 |
* decodes a JSON string into appropriate variable
|
|
|
474 |
*
|
|
|
475 |
* @param string $str JSON-formatted string
|
|
|
476 |
*
|
|
|
477 |
* @return mixed number, boolean, string, array, or object
|
|
|
478 |
* corresponding to given JSON input string.
|
|
|
479 |
* See argument 1 to Services_JSON() above for object-output behavior.
|
|
|
480 |
* Note that decode() always returns strings
|
|
|
481 |
* in ASCII or UTF-8 format!
|
|
|
482 |
* @access public
|
|
|
483 |
*/
|
|
|
484 |
function decode($str)
|
|
|
485 |
{
|
|
|
486 |
$str = $this->reduce_string($str);
|
|
|
487 |
|
|
|
488 |
switch (strtolower($str)) {
|
|
|
489 |
case 'true':
|
|
|
490 |
return true;
|
|
|
491 |
|
|
|
492 |
case 'false':
|
|
|
493 |
return false;
|
|
|
494 |
|
|
|
495 |
case 'null':
|
|
|
496 |
return null;
|
|
|
497 |
|
|
|
498 |
default:
|
|
|
499 |
$m = array();
|
|
|
500 |
|
|
|
501 |
if (is_numeric($str)) {
|
|
|
502 |
// Lookie-loo, it's a number
|
|
|
503 |
|
|
|
504 |
// This would work on its own, but I'm trying to be
|
|
|
505 |
// good about returning integers where appropriate:
|
|
|
506 |
// return (float)$str;
|
|
|
507 |
|
|
|
508 |
// Return float or int, as appropriate
|
|
|
509 |
return ((float)$str == (integer)$str)
|
|
|
510 |
? (integer)$str
|
|
|
511 |
: (float)$str;
|
|
|
512 |
|
|
|
513 |
} elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
|
|
|
514 |
// STRINGS RETURNED IN UTF-8 FORMAT
|
|
|
515 |
$delim = substr($str, 0, 1);
|
|
|
516 |
$chrs = substr($str, 1, -1);
|
|
|
517 |
$utf8 = '';
|
|
|
518 |
$strlen_chrs = strlen($chrs);
|
|
|
519 |
|
|
|
520 |
for ($c = 0; $c < $strlen_chrs; ++$c) {
|
|
|
521 |
|
|
|
522 |
$substr_chrs_c_2 = substr($chrs, $c, 2);
|
|
|
523 |
$ord_chrs_c = ord($chrs{$c});
|
|
|
524 |
|
|
|
525 |
switch (true) {
|
|
|
526 |
case $substr_chrs_c_2 == '\b':
|
|
|
527 |
$utf8 .= chr(0x08);
|
|
|
528 |
++$c;
|
|
|
529 |
break;
|
|
|
530 |
case $substr_chrs_c_2 == '\t':
|
|
|
531 |
$utf8 .= chr(0x09);
|
|
|
532 |
++$c;
|
|
|
533 |
break;
|
|
|
534 |
case $substr_chrs_c_2 == '\n':
|
|
|
535 |
$utf8 .= chr(0x0A);
|
|
|
536 |
++$c;
|
|
|
537 |
break;
|
|
|
538 |
case $substr_chrs_c_2 == '\f':
|
|
|
539 |
$utf8 .= chr(0x0C);
|
|
|
540 |
++$c;
|
|
|
541 |
break;
|
|
|
542 |
case $substr_chrs_c_2 == '\r':
|
|
|
543 |
$utf8 .= chr(0x0D);
|
|
|
544 |
++$c;
|
|
|
545 |
break;
|
|
|
546 |
|
|
|
547 |
case $substr_chrs_c_2 == '\\"':
|
|
|
548 |
case $substr_chrs_c_2 == '\\\'':
|
|
|
549 |
case $substr_chrs_c_2 == '\\\\':
|
|
|
550 |
case $substr_chrs_c_2 == '\\/':
|
|
|
551 |
if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
|
|
|
552 |
($delim == "'" && $substr_chrs_c_2 != '\\"')) {
|
|
|
553 |
$utf8 .= $chrs{++$c};
|
|
|
554 |
}
|
|
|
555 |
break;
|
|
|
556 |
|
|
|
557 |
case preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
|
|
|
558 |
// single, escaped unicode character
|
|
|
559 |
$utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
|
|
|
560 |
. chr(hexdec(substr($chrs, ($c + 4), 2)));
|
|
|
561 |
$utf8 .= $this->utf162utf8($utf16);
|
|
|
562 |
$c += 5;
|
|
|
563 |
break;
|
|
|
564 |
|
|
|
565 |
case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
|
|
|
566 |
$utf8 .= $chrs{$c};
|
|
|
567 |
break;
|
|
|
568 |
|
|
|
569 |
case ($ord_chrs_c & 0xE0) == 0xC0:
|
|
|
570 |
// characters U-00000080 - U-000007FF, mask 110XXXXX
|
|
|
571 |
//see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
|
572 |
$utf8 .= substr($chrs, $c, 2);
|
|
|
573 |
++$c;
|
|
|
574 |
break;
|
|
|
575 |
|
|
|
576 |
case ($ord_chrs_c & 0xF0) == 0xE0:
|
|
|
577 |
// characters U-00000800 - U-0000FFFF, mask 1110XXXX
|
|
|
578 |
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
|
579 |
$utf8 .= substr($chrs, $c, 3);
|
|
|
580 |
$c += 2;
|
|
|
581 |
break;
|
|
|
582 |
|
|
|
583 |
case ($ord_chrs_c & 0xF8) == 0xF0:
|
|
|
584 |
// characters U-00010000 - U-001FFFFF, mask 11110XXX
|
|
|
585 |
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
|
586 |
$utf8 .= substr($chrs, $c, 4);
|
|
|
587 |
$c += 3;
|
|
|
588 |
break;
|
|
|
589 |
|
|
|
590 |
case ($ord_chrs_c & 0xFC) == 0xF8:
|
|
|
591 |
// characters U-00200000 - U-03FFFFFF, mask 111110XX
|
|
|
592 |
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
|
593 |
$utf8 .= substr($chrs, $c, 5);
|
|
|
594 |
$c += 4;
|
|
|
595 |
break;
|
|
|
596 |
|
|
|
597 |
case ($ord_chrs_c & 0xFE) == 0xFC:
|
|
|
598 |
// characters U-04000000 - U-7FFFFFFF, mask 1111110X
|
|
|
599 |
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
|
600 |
$utf8 .= substr($chrs, $c, 6);
|
|
|
601 |
$c += 5;
|
|
|
602 |
break;
|
|
|
603 |
|
|
|
604 |
}
|
|
|
605 |
|
|
|
606 |
}
|
|
|
607 |
|
|
|
608 |
return $utf8;
|
|
|
609 |
|
|
|
610 |
} elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
|
|
|
611 |
// array, or object notation
|
|
|
612 |
|
|
|
613 |
if ($str{0} == '[') {
|
|
|
614 |
$stk = array(SERVICES_JSON_IN_ARR);
|
|
|
615 |
$arr = array();
|
|
|
616 |
} else {
|
|
|
617 |
if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
|
|
|
618 |
$stk = array(SERVICES_JSON_IN_OBJ);
|
|
|
619 |
$obj = array();
|
|
|
620 |
} else {
|
|
|
621 |
$stk = array(SERVICES_JSON_IN_OBJ);
|
|
|
622 |
$obj = new stdClass();
|
|
|
623 |
}
|
|
|
624 |
}
|
|
|
625 |
|
|
|
626 |
array_push($stk, array('what' => SERVICES_JSON_SLICE,
|
|
|
627 |
'where' => 0,
|
|
|
628 |
'delim' => false));
|
|
|
629 |
|
|
|
630 |
$chrs = substr($str, 1, -1);
|
|
|
631 |
$chrs = $this->reduce_string($chrs);
|
|
|
632 |
|
|
|
633 |
if ($chrs == '') {
|
|
|
634 |
if (reset($stk) == SERVICES_JSON_IN_ARR) {
|
|
|
635 |
return $arr;
|
|
|
636 |
|
|
|
637 |
} else {
|
|
|
638 |
return $obj;
|
|
|
639 |
|
|
|
640 |
}
|
|
|
641 |
}
|
|
|
642 |
|
|
|
643 |
//print("\nparsing {$chrs}\n");
|
|
|
644 |
|
|
|
645 |
$strlen_chrs = strlen($chrs);
|
|
|
646 |
|
|
|
647 |
for ($c = 0; $c <= $strlen_chrs; ++$c) {
|
|
|
648 |
|
|
|
649 |
$top = end($stk);
|
|
|
650 |
$substr_chrs_c_2 = substr($chrs, $c, 2);
|
|
|
651 |
|
|
|
652 |
if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
|
|
|
653 |
// found a comma that is not inside a string, array, etc.,
|
|
|
654 |
// OR we've reached the end of the character list
|
|
|
655 |
$slice = substr($chrs, $top['where'], ($c - $top['where']));
|
|
|
656 |
array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
|
|
|
657 |
//print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
|
|
|
658 |
|
|
|
659 |
if (reset($stk) == SERVICES_JSON_IN_ARR) {
|
|
|
660 |
// we are in an array, so just push an element onto the stack
|
|
|
661 |
array_push($arr, $this->decode($slice));
|
|
|
662 |
|
|
|
663 |
} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
|
|
|
664 |
// we are in an object, so figure
|
|
|
665 |
// out the property name and set an
|
|
|
666 |
// element in an associative array,
|
|
|
667 |
// for now
|
|
|
668 |
$parts = array();
|
|
|
669 |
|
|
|
670 |
if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
|
|
|
671 |
// "name":value pair
|
|
|
672 |
$key = $this->decode($parts[1]);
|
|
|
673 |
$val = $this->decode($parts[2]);
|
|
|
674 |
|
|
|
675 |
if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
|
|
|
676 |
$obj[$key] = $val;
|
|
|
677 |
} else {
|
|
|
678 |
$obj->$key = $val;
|
|
|
679 |
}
|
|
|
680 |
} elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
|
|
|
681 |
// name:value pair, where name is unquoted
|
|
|
682 |
$key = $parts[1];
|
|
|
683 |
$val = $this->decode($parts[2]);
|
|
|
684 |
|
|
|
685 |
if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
|
|
|
686 |
$obj[$key] = $val;
|
|
|
687 |
} else {
|
|
|
688 |
$obj->$key = $val;
|
|
|
689 |
}
|
|
|
690 |
}
|
|
|
691 |
|
|
|
692 |
}
|
|
|
693 |
|
|
|
694 |
} elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
|
|
|
695 |
// found a quote, and we are not inside a string
|
|
|
696 |
array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
|
|
|
697 |
//print("Found start of string at {$c}\n");
|
|
|
698 |
|
|
|
699 |
} elseif (($chrs{$c} == $top['delim']) &&
|
|
|
700 |
($top['what'] == SERVICES_JSON_IN_STR) &&
|
|
|
701 |
((strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2 != 1)) {
|
|
|
702 |
// found a quote, we're in a string, and it's not escaped
|
|
|
703 |
// we know that it's not escaped becase there is _not_ an
|
|
|
704 |
// odd number of backslashes at the end of the string so far
|
|
|
705 |
array_pop($stk);
|
|
|
706 |
//print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
|
|
|
707 |
|
|
|
708 |
} elseif (($chrs{$c} == '[') &&
|
|
|
709 |
in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
|
|
|
710 |
// found a left-bracket, and we are in an array, object, or slice
|
|
|
711 |
array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
|
|
|
712 |
//print("Found start of array at {$c}\n");
|
|
|
713 |
|
|
|
714 |
} elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
|
|
|
715 |
// found a right-bracket, and we're in an array
|
|
|
716 |
array_pop($stk);
|
|
|
717 |
//print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
|
|
|
718 |
|
|
|
719 |
} elseif (($chrs{$c} == '{') &&
|
|
|
720 |
in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
|
|
|
721 |
// found a left-brace, and we are in an array, object, or slice
|
|
|
722 |
array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
|
|
|
723 |
//print("Found start of object at {$c}\n");
|
|
|
724 |
|
|
|
725 |
} elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
|
|
|
726 |
// found a right-brace, and we're in an object
|
|
|
727 |
array_pop($stk);
|
|
|
728 |
//print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
|
|
|
729 |
|
|
|
730 |
} elseif (($substr_chrs_c_2 == '/*') &&
|
|
|
731 |
in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
|
|
|
732 |
// found a comment start, and we are in an array, object, or slice
|
|
|
733 |
array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
|
|
|
734 |
$c++;
|
|
|
735 |
//print("Found start of comment at {$c}\n");
|
|
|
736 |
|
|
|
737 |
} elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
|
|
|
738 |
// found a comment end, and we're in one now
|
|
|
739 |
array_pop($stk);
|
|
|
740 |
$c++;
|
|
|
741 |
|
|
|
742 |
for ($i = $top['where']; $i <= $c; ++$i)
|
|
|
743 |
$chrs = substr_replace($chrs, ' ', $i, 1);
|
|
|
744 |
|
|
|
745 |
//print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
|
|
|
746 |
|
|
|
747 |
}
|
|
|
748 |
|
|
|
749 |
}
|
|
|
750 |
|
|
|
751 |
if (reset($stk) == SERVICES_JSON_IN_ARR) {
|
|
|
752 |
return $arr;
|
|
|
753 |
|
|
|
754 |
} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
|
|
|
755 |
return $obj;
|
|
|
756 |
|
|
|
757 |
}
|
|
|
758 |
|
|
|
759 |
}
|
|
|
760 |
}
|
|
|
761 |
}
|
|
|
762 |
|
|
|
763 |
/**
|
|
|
764 |
* @todo Ultimately, this should just call PEAR::isError()
|
|
|
765 |
*/
|
|
|
766 |
function isError($data, $code = null)
|
|
|
767 |
{
|
|
|
768 |
if (class_exists('pear')) {
|
|
|
769 |
return PEAR::isError($data, $code);
|
|
|
770 |
} elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
|
|
|
771 |
is_subclass_of($data, 'services_json_error'))) {
|
|
|
772 |
return true;
|
|
|
773 |
}
|
|
|
774 |
|
|
|
775 |
return false;
|
|
|
776 |
}
|
|
|
777 |
}
|
|
|
778 |
|
|
|
779 |
if (class_exists('PEAR_Error')) {
|
|
|
780 |
|
|
|
781 |
class Services_JSON_Error extends PEAR_Error
|
|
|
782 |
{
|
|
|
783 |
function Services_JSON_Error($message = 'unknown error', $code = null,
|
|
|
784 |
$mode = null, $options = null, $userinfo = null)
|
|
|
785 |
{
|
|
|
786 |
parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
|
|
|
787 |
}
|
|
|
788 |
}
|
|
|
789 |
|
|
|
790 |
} else {
|
|
|
791 |
|
|
|
792 |
/**
|
|
|
793 |
* @todo Ultimately, this class shall be descended from PEAR_Error
|
|
|
794 |
*/
|
|
|
795 |
class Services_JSON_Error
|
|
|
796 |
{
|
|
|
797 |
function Services_JSON_Error($message = 'unknown error', $code = null,
|
|
|
798 |
$mode = null, $options = null, $userinfo = null)
|
|
|
799 |
{
|
|
|
800 |
|
|
|
801 |
}
|
|
|
802 |
}
|
|
|
803 |
|
|
|
804 |
}
|
|
|
805 |
|
|
|
806 |
?>
|