/var/Json.php
PHP | 545 lines | 479 code | 21 blank | 45 comment | 31 complexity | 4fe1eae37dc0480fe45f8b33c33a9bb8 MD5 | raw file
Possible License(s): AGPL-1.0
- <?php
- /**********************************
- * Created on: 2007-2-2
- * File Name : lib.json.php
- * Copyright : 2005 Michal Migursk
- * License : http://www.opensource.org/licenses/bsd-license.php
- *********************************/
- class Json
- {
- const SERVICES_JSON_SLICE = 1;
- const SERVICES_JSON_IN_STR = 2;
- const SERVICES_JSON_IN_ARR = 3;
- const SERVICES_JSON_IN_OBJ = 4;
- const SERVICES_JSON_IN_CMT = 5;
- const SERVICES_JSON_LOOSE_TYPE = 16;
- const SERVICES_JSON_SUPPRESS_ERRORS = 32;
- const E_JSONTYPE = 'json decode error';
- /**
- * 将utf16转换为utf8
- *
- * @access private
- * @param string $utf16 utf16字符串
- * @return string
- */
- private static function utf162utf8($utf16)
- {
- if (function_exists('mb_convert_encoding')) {
- return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
- }
- $bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
- switch (true) {
- case ((0x7F & $bytes) == $bytes):
- return chr(0x7F & $bytes);
- case (0x07FF & $bytes) == $bytes:
- return chr(0xC0 | (($bytes >> 6) & 0x1F))
- . chr(0x80 | ($bytes & 0x3F));
- case (0xFFFF & $bytes) == $bytes:
- return chr(0xE0 | (($bytes >> 12) & 0x0F))
- . chr(0x80 | (($bytes >> 6) & 0x3F))
- . chr(0x80 | ($bytes & 0x3F));
- }
- return '';
- }
- /**
- * 将utf8转换为utf16
- *
- * @access private
- * @param string $utf8 utf8字符串
- * @return string
- */
- private static function utf82utf16($utf8)
- {
- if (function_exists('mb_convert_encoding')) {
- return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
- }
- switch (strlen($utf8)) {
- case 1:
- return $utf8;
- case 2:
- return chr(0x07 & (ord($utf8{0}) >> 2))
- . chr((0xC0 & (ord($utf8{0}) << 6))
- | (0x3F & ord($utf8{1})));
- case 3:
- return chr((0xF0 & (ord($utf8{0}) << 4))
- | (0x0F & (ord($utf8{1}) >> 2)))
- . chr((0xC0 & (ord($utf8{1}) << 6))
- | (0x7F & ord($utf8{2})));
- }
- return '';
- }
- /**
- * 判断错误
- *
- * @access private
- * @param mixed $data 错误对象
- * @param string $code 错误代码
- * @return boolean
- */
- private static function _is_error($data, $code = null)
- {
- if (is_object($data) && (get_class($data) == 'services_json_error' ||
- is_subclass_of($data, 'services_json_error'))) {
- return true;
- }
- return false;
- }
- /**
- * 清除特殊格式
- *
- * @access private
- * @param string $str 待处理字符串
- * @return string
- */
- private static function _reduce_string($str)
- {
- $str = preg_replace(array(
- '#^\s*//(.+)$#m',
- '#^\s*/\*(.+)\*/#Us',
- '#/\*(.+)\*/\s*$#Us'
- ), '', $str);
- return trim($str);
- }
- /**
- * 将对象转换为json串
- *
- * @access public
- * @param mixed $var 需要转换的对象
- * @return string
- */
- public static function _encode($var)
- {
- switch (gettype($var)) {
- case 'boolean':
- return $var ? 'true' : 'false';
- case 'NULL':
- return 'null';
- case 'integer':
- return (int) $var;
- case 'double':
- case 'float':
- return (float) $var;
- case 'string':
- $ascii = '';
- $strlen_var = strlen($var);
- 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:
- $ascii .= '\\'.$var{$c};
- break;
- case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
- $ascii .= $var{$c};
- break;
- case (($ord_var_c & 0xE0) == 0xC0):
- $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
- $c += 1;
- $utf16 = self::utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- case (($ord_var_c & 0xF0) == 0xE0):
- $char = pack('C*', $ord_var_c,
- ord($var{$c + 1}),
- ord($var{$c + 2}));
- $c += 2;
- $utf16 = self::utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- case (($ord_var_c & 0xF8) == 0xF0):
- $char = pack('C*', $ord_var_c,
- ord($var{$c + 1}),
- ord($var{$c + 2}),
- ord($var{$c + 3}));
- $c += 3;
- $utf16 = self::utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- case (($ord_var_c & 0xFC) == 0xF8):
- $char = pack('C*', $ord_var_c,
- ord($var{$c + 1}),
- ord($var{$c + 2}),
- ord($var{$c + 3}),
- ord($var{$c + 4}));
- $c += 4;
- $utf16 = self::utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- case (($ord_var_c & 0xFE) == 0xFC):
- $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;
- $utf16 = self::utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- }
- }
- return '"'.$ascii.'"';
- case 'array':
- if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
- $properties = array_map(array('Typecho_Json', '_name_value'),
- array_keys($var),
- array_values($var));
- foreach ($properties as $property) {
- if (self::_is_error($property)) {
- return $property;
- }
- }
- return '{' . join(',', $properties) . '}';
- }
- // treat it like a regular array
- $elements = array_map(array('Typecho_Json', '_encode'), $var);
- foreach ($elements as $element) {
- if (self::_is_error($element)) {
- return $element;
- }
- }
- return '[' . join(',', $elements) . ']';
- case 'object':
- $vars = get_object_vars($var);
- $properties = array_map(array('Typecho_Json', '_name_value'),
- array_keys($vars),
- array_values($vars));
- foreach ($properties as $property) {
- if (self::_is_error($property)) {
- return $property;
- }
- }
- return '{' . join(',', $properties) . '}';
- default:
- return false;
- }
- }
- /**
- * 解码json字符串
- *
- * @access public
- * @param string $str 解码字符串
- * @return mixed
- */
- public static function _decode($str)
- {
- $str = self::_reduce_string($str);
- switch (strtolower($str)) {
- case 'true':
- return true;
- case 'false':
- return false;
- case 'null':
- return null;
- default:
- $m = array();
- if (is_numeric($str)) {
- return ((float)$str == (integer)$str)
- ? (integer)$str
- : (float)$str;
- } elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
- $delim = substr($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 (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', substr($chrs, $c, 6)):
- $utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
- . chr(hexdec(substr($chrs, ($c + 4), 2)));
- $utf8 .= self::utf162utf8($utf16);
- $c += 5;
- break;
- case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
- $utf8 .= $chrs{$c};
- break;
- case ($ord_chrs_c & 0xE0) == 0xC0:
- $utf8 .= substr($chrs, $c, 2);
- ++$c;
- break;
- case ($ord_chrs_c & 0xF0) == 0xE0:
- $utf8 .= substr($chrs, $c, 3);
- $c += 2;
- break;
- case ($ord_chrs_c & 0xF8) == 0xF0:
- $utf8 .= substr($chrs, $c, 4);
- $c += 3;
- break;
- case ($ord_chrs_c & 0xFC) == 0xF8:
- $utf8 .= substr($chrs, $c, 5);
- $c += 4;
- break;
- case ($ord_chrs_c & 0xFE) == 0xFC:
- $utf8 .= substr($chrs, $c, 6);
- $c += 5;
- break;
- }
- }
- return $utf8;
- } elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
- if ($str {0} == '[') {
- $stk = array(self::SERVICES_JSON_IN_ARR);
- $arr = array();
- } else {
- $stk = array(self::SERVICES_JSON_IN_OBJ);
- $obj = new stdClass();
- }
- array_push($stk, array('what' => self::SERVICES_JSON_SLICE,
- 'where' => 0,
- 'delim' => false));
- $chrs = substr($str, 1, -1);
- $chrs = self::_reduce_string($chrs);
- if ($chrs == '') {
- if (reset($stk) == self::SERVICES_JSON_IN_ARR) {
- return $arr;
- } else {
- return $obj;
- }
- }
- $strlen_chrs = strlen($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'] == self::SERVICES_JSON_SLICE))) {
- $slice = substr($chrs, $top['where'], ($c - $top['where']));
- array_push($stk, array('what' => self::SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
- if (reset($stk) == self::SERVICES_JSON_IN_ARR) {
- array_push($arr, self::_decode($slice));
- } elseif (reset($stk) == self::SERVICES_JSON_IN_OBJ) {
- $parts = array();
- if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
- $key = self::_decode($parts[1]);
- $val = self::_decode($parts[2]);
- $obj->$key = $val;
- } elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
- $key = $parts[1];
- $val = self::_decode($parts[2]);
- $obj->$key = $val;
- }
- }
- } elseif ((($chrs {$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != self::SERVICES_JSON_IN_STR)) {
- array_push($stk, array('what' => self::SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
- } elseif (($chrs {$c} == $top['delim']) &&
- ($top['what'] == self::SERVICES_JSON_IN_STR) &&
- ((strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2 != 1)) {
- array_pop($stk);
- } elseif (($chrs {$c} == '[') &&
- in_array($top['what'], array(self::SERVICES_JSON_SLICE, self::SERVICES_JSON_IN_ARR, self::SERVICES_JSON_IN_OBJ))) {
- array_push($stk, array('what' => self::SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
- } elseif (($chrs {$c} == ']') && ($top['what'] == self::SERVICES_JSON_IN_ARR)) {
- array_pop($stk);
- } elseif (($chrs {$c} == '{') &&
- in_array($top['what'], array(self::SERVICES_JSON_SLICE, self::SERVICES_JSON_IN_ARR, self::SERVICES_JSON_IN_OBJ))) {
- array_push($stk, array('what' => self::SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
- } elseif (($chrs {$c} == '}') && ($top['what'] == self::SERVICES_JSON_IN_OBJ)) {
- array_pop($stk);
- } elseif (($substr_chrs_c_2 == '/*') &&
- in_array($top['what'], array(self::SERVICES_JSON_SLICE, self::SERVICES_JSON_IN_ARR, self::SERVICES_JSON_IN_OBJ))) {
- array_push($stk, array('what' => self::SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
- $c++;
- } elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == self::SERVICES_JSON_IN_CMT)) {
- array_pop($stk);
- $c++;
- for ($i = $top['where']; $i <= $c; ++$i)
- $chrs = substr_replace($chrs, ' ', $i, 1);
- }
- }
- if (reset($stk) == self::SERVICES_JSON_IN_ARR) {
- return $arr;
- } elseif (reset($stk) == self::SERVICES_JSON_IN_OBJ) {
- return $obj;
- }
- }
- }
- }
- /**
- * 对配对值编码
- *
- * @access public
- * @param string $name 名称
- * @param mixed $value 值
- * @return string
- */
- public static function _name_value($name, $value)
- {
- $encoded_value = self::_encode($value);
- if (self::_is_error($encoded_value)) {
- return $encoded_value;
- }
- return self::_encode(strval($name)) . ':' . $encoded_value;
- }
- /**
- * 对变量进行json编码
- *
- * @access public
- * @param mixed $var 需要处理的对象
- * @return string
- */
- public static function encode($var)
- {
- if (function_exists('json_encode')) {
- /** from php 5.1 */
- return json_encode($var);
- } else {
- return self::_encode($var);
- }
- }
- /**
- * 对字符串进行json解码
- *
- * @access public
- * @param string $var 需要解码的字符串
- * @param boolean $assoc 是否强制解释为数组
- * @return mixed
- */
- public static function decode($var, $assoc = false)
- {
- if (function_exists('json_decode')) {
- /** from php 5.1 */
- return json_decode($var, $assoc);
- } else {
- $result = self::_decode($var);
- }
- if ($assoc && is_object($result)) {
- return (array) $result;
- } else if (!$assoc && is_array($result)) {
- return (object) $result;
- }
- return $result;
- }
- }