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-<?php
-/* 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!
- *
- * PHP versions 4 and 5
- *
- * 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
- * @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
- * @license http://www.freebsd.org/copyright/freebsd-license.html
- * @link http://pear.php.net/pepr/pepr-proposal-show.php?id=198
- */
-
-// for DokuWiki
-if(!defined('DOKU_INC')) die('meh.');
-require_once(DOKU_INC.'inc/utf8.php');
-
-/**
- * Marker constant for JSON::decode(), used to flag stack state
- */
-define('JSON_SLICE', 1);
-
-/**
- * Marker constant for JSON::decode(), used to flag stack state
- */
-define('JSON_IN_STR', 2);
-
-/**
- * Marker constant for JSON::decode(), used to flag stack state
- */
-define('JSON_IN_ARR', 4);
-
-/**
- * Marker constant for JSON::decode(), used to flag stack state
- */
-define('JSON_IN_OBJ', 8);
-
-/**
- * Marker constant for JSON::decode(), used to flag stack state
- */
-define('JSON_IN_CMT', 16);
-
-/**
- * Behavior switch for JSON::decode()
- */
-define('JSON_LOOSE_TYPE', 10);
-
-/**
- * Behavior switch for JSON::decode()
- */
-define('JSON_STRICT_TYPE', 11);
-
-/**
- * Converts to and from JSON format.
- *
- * @category
- * @package
- * @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
- * @license http://www.php.net/license/3_0.txt PHP License 3.0
- * @version
- * @link
- * @see
- * @since
- * @deprecated
- */
-class JSON
-{
- /**
- * constructs a new JSON instance
- *
- * @param int $use object behavior: when encoding or decoding,
- * be loose or strict about object/array usage
- *
- * possible values:
- * JSON_STRICT_TYPE - strict typing, default
- * "{...}" syntax creates objects in decode.
- * JSON_LOOSE_TYPE - loose typing
- * "{...}" syntax creates associative arrays in decode.
- */
- function JSON($use=JSON_STRICT_TYPE)
- {
- $this->use = $use;
- }
-
- /**
- * encodes an arbitrary variable into JSON format
- *
- * @param mixed $var any number, boolean, string, array, or object to be encoded.
- * see argument 1 to JSON() above for array-parsing behavior.
- * if var is a strng, note that encode() always expects it
- * to be in ASCII or UTF-8 format!
- *
- * @return string JSON string representation of input var
- * @access public
- */
- function encode($var)
- {
- switch (gettype($var)) {
- case 'boolean':
- return $var ? 'true' : 'false';
-
- case 'NULL':
- return 'null';
-
- case 'integer':
- return sprintf('%d', $var);
-
- case 'double':
- case 'float':
- return sprintf('%f', $var);
-
- case 'string':
- // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
- $ascii = '';
- $strlen_var = strlen($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{$c});
-
- switch ($ord_var_c) {
- case 0x08: $ascii .= '\b'; break;
- case 0x09: $ascii .= '\t'; break;
- case 0x0A: $ascii .= '\n'; break;
- case 0x0C: $ascii .= '\f'; break;
- case 0x0D: $ascii .= '\r'; break;
-
- case 0x22:
- case 0x2F:
- case 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
- $char = pack('C*', $ord_var_c, ord($var{$c+1}));
- $c+=1;
- //$utf16 = mb_convert_encoding($char, 'UTF-16', 'UTF-8');
- $utf16 = utf8_to_utf16be($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
-
- case (($ord_var_c & 0xF0) == 0xE0):
- // 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 = mb_convert_encoding($char, 'UTF-16', 'UTF-8');
- $utf16 = utf8_to_utf16be($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
-
- case (($ord_var_c & 0xF8) == 0xF0):
- // 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 = mb_convert_encoding($char, 'UTF-16', 'UTF-8');
- $utf16 = utf8_to_utf16be($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
- $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 = mb_convert_encoding($char, 'UTF-16', 'UTF-8');
- $utf16 = utf8_to_utf16be($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
-
- case (($ord_var_c & 0xFE) == 0xFC):
- // 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 = mb_convert_encoding($char, 'UTF-16', 'UTF-8');
- $utf16 = utf8_to_utf16be($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($var) - 1))) {
- return sprintf('{%s}', join(',', array_map(array($this, 'name_value'),
- array_keys($var),
- array_values($var))));
- }
-
- // treat it like a regular array
- return sprintf('[%s]', join(',', array_map(array($this, 'encode'), $var)));
-
- case 'object':
- $vars = get_object_vars($var);
- return sprintf('{%s}', join(',', array_map(array($this, 'name_value'),
- array_keys($vars),
- array_values($vars))));
-
- default:
- return '';
- }
- }
-
- /**
- * encodes an arbitrary variable into JSON format, alias for encode()
- */
- function enc($var)
- {
- return $this->encode($var);
- }
-
- /** function name_value
- * 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)
- {
- return (sprintf("%s:%s", $this->encode(strval($name)), $this->encode($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 $str JSON-formatted string
- *
- * @return mixed number, boolean, string, array, or object
- * corresponding to given JSON input string.
- * See argument 1 to JSON() above for object-output behavior.
- * Note that decode() always returns strings
- * in ASCII or UTF-8 format!
- * @access public
- */
- function decode($str)
- {
- $str = $this->reduce_string($str);
-
- switch (strtolower($str)) {
- case 'true':
- return true;
-
- case 'false':
- return false;
-
- case 'null':
- return null;
-
- default:
- if (is_numeric($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)$str;
-
- } elseif (preg_match('/^("|\').+("|\')$/s', $str, $m) && $m[1] == $m[2]) {
- // STRINGS RETURNED IN UTF-8 FORMAT
- $delim = substr($str, 0, 1);
- $chrs = substr($str, 1, -1);
- $utf8 = '';
- $strlen_chrs = strlen($chrs);
-
- for ($c = 0; $c < $strlen_chrs; ++$c) {
-
- $substr_chrs_c_2 = substr($chrs, $c, 2);
- $ord_chrs_c = ord($chrs{$c});
-
- switch ($substr_chrs_c_2) {
- case '\b': $utf8 .= chr(0x08); $c+=1; break;
- case '\t': $utf8 .= chr(0x09); $c+=1; break;
- case '\n': $utf8 .= chr(0x0A); $c+=1; break;
- case '\f': $utf8 .= chr(0x0C); $c+=1; break;
- case '\r': $utf8 .= chr(0x0D); $c+=1; break;
-
- case '\\"':
- case '\\\'':
- case '\\\\':
- case '\\/':
- if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
- ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
- $utf8 .= $chrs{++$c};
- }
- break;
-
- default:
- if (preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6))) {
- // single, escaped unicode character
- $utf16 = chr(hexdec(substr($chrs, ($c+2), 2)))
- . chr(hexdec(substr($chrs, ($c+4), 2)));
- //$utf8 .= mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
- $utf8 .= utf16be_to_utf8($utf16);
- $c+=5;
-
- } elseif(($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F)) {
- $utf8 .= $chrs{$c};
-
- } elseif(($ord_chrs_c & 0xE0) == 0xC0) {
- // characters U-00000080 - U-000007FF, mask 110XXXXX
- //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($chrs, $c, 2); $c += 1;
-
- } elseif(($ord_chrs_c & 0xF0) == 0xE0) {
- // characters U-00000800 - U-0000FFFF, mask 1110XXXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($chrs, $c, 3); $c += 2;
-
- } elseif(($ord_chrs_c & 0xF8) == 0xF0) {
- // characters U-00010000 - U-001FFFFF, mask 11110XXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($chrs, $c, 4); $c += 3;
-
- } elseif(($ord_chrs_c & 0xFC) == 0xF8) {
- // characters U-00200000 - U-03FFFFFF, mask 111110XX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($chrs, $c, 5); $c += 4;
-
- } elseif(($ord_chrs_c & 0xFE) == 0xFC) {
- // characters U-04000000 - U-7FFFFFFF, mask 1111110X
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($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(JSON_IN_ARR);
- $arr = array();
- } else {
- if ($this->use == JSON_LOOSE_TYPE) {
- $stk = array(JSON_IN_OBJ);
- $obj = array();
- } else {
- $stk = array(JSON_IN_OBJ);
- $obj = new stdClass();
- }
- }
-
- array_push($stk, array('what' => JSON_SLICE,
- 'where' => 0,
- 'delim' => false));
-
- $chrs = substr($str, 1, -1);
- $chrs = $this->reduce_string($chrs);
-
- if ($chrs == '') {
- if (reset($stk) == JSON_IN_ARR) {
- return $arr;
-
- } else {
- return $obj;
-
- }
- }
-
- //print("\nparsing {$chrs}\n");
-
- $strlen_chrs = strlen($chrs);
-
- for ($c = 0; $c <= $strlen_chrs; ++$c) {
-
- $top = end($stk);
- $substr_chrs_c_2 = substr($chrs, $c, 2);
-
- if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == JSON_SLICE))) {
- // found a comma that is not inside a string, array, etc.,
- // OR we've reached the end of the character list
- $slice = substr($chrs, $top['where'], ($c - $top['where']));
- array_push($stk, array('what' => JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
- //print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
-
- if (reset($stk) == 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) == JSON_IN_OBJ) {
- // we are in an object, so figure
- // out the property name and set an
- // element in an associative array,
- // for now
- if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
- // "name":value pair
- $key = $this->decode($parts[1]);
- $val = $this->decode($parts[2]);
-
- if ($this->use == JSON_LOOSE_TYPE) {
- $obj[$key] = $val;
- } else {
- $obj->$key = $val;
- }
- } elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
- // name:value pair, where name is unquoted
- $key = $parts[1];
- $val = $this->decode($parts[2]);
-
- if ($this->use == JSON_LOOSE_TYPE) {
- $obj[$key] = $val;
- } else {
- $obj->$key = $val;
- }
- }
-
- }
-
- } elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) &&
- in_array($top['what'], array(JSON_SLICE, JSON_IN_ARR, JSON_IN_OBJ))) {
- // found a quote, and we are not inside a string
- array_push($stk, array('what' => JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
- //print("Found start of string at {$c}\n");
-
- } elseif (($chrs{$c} == $top['delim']) &&
- ($top['what'] == JSON_IN_STR) &&
- (($chrs{$c - 1} != "\\") ||
- ($chrs{$c - 1} == "\\" && $chrs{$c - 2} == "\\"))) {
- // found a quote, we're in a string, and it's not escaped
- array_pop($stk);
- //print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
-
- } elseif (($chrs{$c} == '[') &&
- in_array($top['what'], array(JSON_SLICE, JSON_IN_ARR, JSON_IN_OBJ))) {
- // found a left-bracket, and we are in an array, object, or slice
- array_push($stk, array('what' => JSON_IN_ARR, 'where' => $c, 'delim' => false));
- //print("Found start of array at {$c}\n");
-
- } elseif (($chrs{$c} == ']') && ($top['what'] == JSON_IN_ARR)) {
- // found a right-bracket, and we're in an array
- array_pop($stk);
- //print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
-
- } elseif (($chrs{$c} == '{') &&
- in_array($top['what'], array(JSON_SLICE, JSON_IN_ARR, JSON_IN_OBJ))) {
- // found a left-brace, and we are in an array, object, or slice
- array_push($stk, array('what' => JSON_IN_OBJ, 'where' => $c, 'delim' => false));
- //print("Found start of object at {$c}\n");
-
- } elseif (($chrs{$c} == '}') && ($top['what'] == JSON_IN_OBJ)) {
- // found a right-brace, and we're in an object
- array_pop($stk);
- //print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
-
- } elseif (($substr_chrs_c_2 == '/*') &&
- in_array($top['what'], array(JSON_SLICE, JSON_IN_ARR, JSON_IN_OBJ))) {
- // found a comment start, and we are in an array, object, or slice
- array_push($stk, array('what' => JSON_IN_CMT, 'where' => $c, 'delim' => false));
- $c++;
- //print("Found start of comment at {$c}\n");
-
- } elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == 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}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
-
- }
-
- }
-
- if (reset($stk) == JSON_IN_ARR) {
- return $arr;
-
- } elseif (reset($stk) == JSON_IN_OBJ) {
- return $obj;
-
- }
-
- }
- }
- }
-
- /**
- * decodes a JSON string into appropriate variable; alias for decode()
- */
- function dec($var)
- {
- return $this->decode($var);
- }
-
-}
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-27 21:12:56 +0000