<?php
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/*
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* $Author ：PHPYUN开发团队
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*
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* 官网: http://www.phpyun.com
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*
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* 版权所有 2009-2021 宿迁鑫潮信息技术有限公司，并保留所有权利。
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*
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* 软件声明：未经授权前提下，不得用于商业运营、二次开发以及任何形式的再次发布。
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*/
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!defined('P_W') && exit('Forbidden');
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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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class Services_JSON
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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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* reduce a string by removing leading and trailing comments and whitespace
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*
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* @param $str string string value to strip of comments and whitespace
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*
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* @return string string value stripped of comments and whitespace
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* @access private
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*/
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function reduce_string($str)
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{
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$str = preg_replace(array(
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// eliminate single line comments in '// ...' form
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'#^\s*//(.+)$#m',
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// eliminate multi-line comments in '/* ... */' form, at start of string
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'#^\s*/\*(.+)\*/#Us',
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// eliminate multi-line comments in '/* ... */' form, at end of string
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'#/\*(.+)\*/\s*$#Us'
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), '', $str);
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// eliminate extraneous space
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return trim($str);
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}
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/**
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* decodes a JSON string into appropriate variable
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*
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* @param string $str JSON-formatted string
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*
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* @return mixed number, boolean, string, array, or object
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* corresponding to given JSON input string.
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* See argument 1 to Services_JSON() above for object-output behavior.
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* Note that decode() always returns strings
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* in ASCII or UTF-8 format!
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* @access public
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*/
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function decode($str)
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{
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$str = $this->reduce_string($str);
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switch (strtolower($str)) {
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case 'true':
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return true;
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case 'false':
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return false;
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case 'null':
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return null;
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default:
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$m = array();
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if (is_numeric($str)) {
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// Lookie-loo, it's a number
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// This would work on its own, but I'm trying to be
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// good about returning integers where appropriate:
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// return (float)$str;
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// Return float or int, as appropriate
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return ((float)$str == (integer)$str)
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? (integer)$str
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: (float)$str;
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} elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
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// STRINGS RETURNED IN UTF-8 FORMAT
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$delim = substr($str, 0, 1);
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$chrs = substr($str, 1, -1);
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$utf8 = '';
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$strlen_chrs = strlen($chrs);
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for ($c = 0; $c < $strlen_chrs; ++$c) {
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$substr_chrs_c_2 = substr($chrs, $c, 2);
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$ord_chrs_c = ord($chrs{$c});
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switch (true) {
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case $substr_chrs_c_2 == '\b':
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$utf8 .= chr(0x08);
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++$c;
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break;
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case $substr_chrs_c_2 == '\t':
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$utf8 .= chr(0x09);
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++$c;
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break;
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case $substr_chrs_c_2 == '\n':
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$utf8 .= chr(0x0A);
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++$c;
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break;
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case $substr_chrs_c_2 == '\f':
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$utf8 .= chr(0x0C);
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++$c;
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break;
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case $substr_chrs_c_2 == '\r':
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$utf8 .= chr(0x0D);
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++$c;
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break;
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case $substr_chrs_c_2 == '\\"':
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case $substr_chrs_c_2 == '\\\'':
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case $substr_chrs_c_2 == '\\\\':
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case $substr_chrs_c_2 == '\\/':
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if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
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($delim == "'" && $substr_chrs_c_2 != '\\"')) {
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$utf8 .= $chrs{++$c};
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}
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break;
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case preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
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// single, escaped unicode character
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$utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
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. chr(hexdec(substr($chrs, ($c + 4), 2)));
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$utf8 .= $this->utf162utf8($utf16);
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$c += 5;
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break;
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case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
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$utf8 .= $chrs{$c};
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break;
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case ($ord_chrs_c & 0xE0) == 0xC0:
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// characters U-00000080 - U-000007FF, mask 110XXXXX
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//see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$utf8 .= substr($chrs, $c, 2);
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++$c;
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break;
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case ($ord_chrs_c & 0xF0) == 0xE0:
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// characters U-00000800 - U-0000FFFF, mask 1110XXXX
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$utf8 .= substr($chrs, $c, 3);
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$c += 2;
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break;
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case ($ord_chrs_c & 0xF8) == 0xF0:
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// characters U-00010000 - U-001FFFFF, mask 11110XXX
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$utf8 .= substr($chrs, $c, 4);
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$c += 3;
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break;
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case ($ord_chrs_c & 0xFC) == 0xF8:
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// characters U-00200000 - U-03FFFFFF, mask 111110XX
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$utf8 .= substr($chrs, $c, 5);
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$c += 4;
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break;
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case ($ord_chrs_c & 0xFE) == 0xFC:
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// characters U-04000000 - U-7FFFFFFF, mask 1111110X
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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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$utf8 .= substr($chrs, $c, 6);
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$c += 5;
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break;
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}
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}
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return $utf8;
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} elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
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// array, or object notation
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if ($str{0} == '[') {
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$stk = array(SERVICES_JSON_IN_ARR);
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$arr = array();
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} else {
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if ($this->use && SERVICES_JSON_LOOSE_TYPE) {
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$stk = array(SERVICES_JSON_IN_OBJ);
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$obj = array();
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} else {
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$stk = array(SERVICES_JSON_IN_OBJ);
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$obj = new stdClass();
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}
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}
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array_push($stk, array('what' => SERVICES_JSON_SLICE,
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'where' => 0,
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'delim' => false));
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$chrs = substr($str, 1, -1);
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$chrs = $this->reduce_string($chrs);
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if ($chrs == '') {
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if (reset($stk) == SERVICES_JSON_IN_ARR) {
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return $arr;
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} else {
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return $obj;
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}
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}
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$strlen_chrs = strlen($chrs);
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for ($c = 0; $c <= $strlen_chrs; ++$c) {
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$top = end($stk);
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$substr_chrs_c_2 = substr($chrs, $c, 2);
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if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
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// found a comma that is not inside a string, array, etc.,
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// OR we've reached the end of the character list
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$slice = substr($chrs, $top['where'], ($c - $top['where']));
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array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
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if (reset($stk) == SERVICES_JSON_IN_ARR) {
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// we are in an array, so just push an element onto the stack
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// print_r( $this->decode($slice));exit;
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array_push($arr, $this->decode($slice));
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} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
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// we are in an object, so figure
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// out the property name and set an
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// element in an associative array,
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// for now
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$parts = array();
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if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
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// "name":value pair
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$key = $this->decode($parts[1]);
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$val = $this->decode($parts[2]);
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if ($this->use && SERVICES_JSON_LOOSE_TYPE) {
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$obj[$key] = $val;
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} else {
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$obj->$key = $val;
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}
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} elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
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// name:value pair, where name is unquoted
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$key = $parts[1];
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$val = $this->decode($parts[2]);
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if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
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$obj[$key] = $val;
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} else {
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$obj->$key = $val;
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}
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}
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}
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} elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
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// found a quote, and we are not inside a string
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array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
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//print("Found start of string at {$c}\n");
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} elseif (($chrs{$c} == $top['delim']) &&
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($top['what'] == SERVICES_JSON_IN_STR) &&
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((strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2 != 1)) {
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// found a quote, we're in a string, and it's not escaped
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// we know that it's not escaped becase there is _not_ an
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// odd number of backslashes at the end of the string so far
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array_pop($stk);
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//print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
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} elseif (($chrs{$c} == '[') &&
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in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
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// found a left-bracket, and we are in an array, object, or slice
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array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
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//print("Found start of array at {$c}\n");
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} elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
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// found a right-bracket, and we're in an array
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array_pop($stk);
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//print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
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} elseif (($chrs{$c} == '{') &&
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in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
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// found a left-brace, and we are in an array, object, or slice
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array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
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//print("Found start of object at {$c}\n");
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} elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
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// found a right-brace, and we're in an object
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array_pop($stk);
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//print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
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} elseif (($substr_chrs_c_2 == '/*') &&
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in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
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// found a comment start, and we are in an array, object, or slice
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array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
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$c++;
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//print("Found start of comment at {$c}\n");
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} elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
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// found a comment end, and we're in one now
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array_pop($stk);
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$c++;
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for ($i = $top['where']; $i <= $c; ++$i)
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$chrs = substr_replace($chrs, ' ', $i, 1);
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//print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
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}
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}
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if (reset($stk) == SERVICES_JSON_IN_ARR) {
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return $arr;
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} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
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return $obj;
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}
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}
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}
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}
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}
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?>
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