msgpack-php-micro/msgpack.php at master · CodeSmith32/msgpack-php-micro · GitHub

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<?php

/// Micro MsgPack Library
/// Version: 1.0.2
/// Author: Codesmith32
/// License: MIT / https://mit-license.org
/// URL: https://github.com/CodeSmith32/msgpack-php-micro

if(!class_exists('MsgPack')):

class MsgPack {
// static-only class
privatefunction__construct() {}

privatestatic$extensions = array();
privatestatic$extensionCodes = array();

privatestatic$strsAsBufs = NULL;

privatestatic$assocArrays = NULL;

privatestatic$buffer = NULL;
privatestatic$pos = 0;

privatestatic$i16 = 'n';
privatestatic$i32 = 'N';
privatestatic$f32 = 'G';
privatestatic$f64 = 'E';

privatestaticfunctionneedsF64($n) {
$n = abs($n);
$lg = log($n,2);
if($lg < -120 || $lg > 120) returntrue;

$n = $n / pow(2,floor($lg) - 23);
return$n !== floor($n);
	}

privatestaticfunctionisArray($arr) {
$l = count($arr);
for($i=0;$i<$l;$i++)
if(!isset($arr[$i])) returnFALSE;
returnTRUE;
	}

privatestaticfunctiondetectRecursion(&$arr) {
// based on https://stackoverflow.com/questions/9042142/detecting-infinite-array-recursion-in-php#9042169
$printed_count = preg_match_all('%\\*RECURSION\\*%',print_r($arr,TRUE));
if($printed_count === 0) returnFALSE;

$serial_count = preg_match_all('%\\*RECURSION\\*%',serialize($arr));
return$printed_count > $serial_count;
	}

privatestaticfunctionread($l) {
if(self::$pos + $l > strlen(self::$buffer))
thrownewException('MsgPack Error: Unexpected end of data');

$str = substr(self::$buffer,self::$pos,$l);
self::$pos += $l;
return$str;
	}
privatestaticfunctionui16() {
$d = unpack(self::$i16.'n',self::read(2));
return$d['n'];
	}
privatestaticfunctionui32() {
$d = unpack(self::$i32.'n',self::read(4));
return$d['n'] < 0 ? $d['n'] + 0x100000000 : $d['n'];
	}
privatestaticfunctionui64() {
returnself::ui32() * 0x100000000 + self::ui32();
	}
privatestaticfunctioni8() {
$v = ord(self::read(1));
if($v & 0x80) $v |= -1^255;
return$v;
	}
privatestaticfunctioni16() {
$v = self::ui16();
if($v & 0x8000) $v |= -1^255;
return$v;
	}
privatestaticfunctioni32() {
returnself::ui32() >> 0;
	}
privatestaticfunctioni64() {
returnself::i32() * 0x100000000 + self::ui32();
	}
privatestaticfunctionf32() {
$d = unpack(self::$f32.'n',self::read(4));
return$d['n'];
	}
privatestaticfunctionf64() {
$d = unpack(self::$f64.'n',self::read(8));
return$d['n'];
	}

privatestaticfunctiondec_obj($l) {
if(self::$assocArrays) {
$o = array();
for($i=0;$i<$l;$i++)
$o[self::dec()] = self::dec();
return$o;
 }
$o = newstdClass();
for($i=0;$i<$l;$i++) {
$prop = self::dec();
$o->$prop = self::dec();
 }
return$o;
	}
privatestaticfunctiondec_arr($l) {
$o = array();
for($i=0;$i<$l;$i++)
$o []= self::dec();
return$o;
	}
privatestaticfunctiondec_ext($ty,$buf) {
if($ty & 0x80) $ty |= (-1^255);
if(!isset(self::$extensionCodes[$ty]))
returnNULL;
returncall_user_func(self::$extensionCodes[$ty]['dec'],$buf);
	}

privatestaticfunctionenc($obj) {
$ty = gettype($obj);
if(isset(self::$extensions[$ty])) {
foreach(self::$extensions[$ty] as$ext) {
$buf = call_user_func($ext['enc'],$obj); // call extension encode
if($buf === FALSE) continue; // returning FALSE passes it on
if(!is_string($buf))
thrownewException("MsgPack Error: Extension code {$ext['ty']} failed to return a string");

$ret = '';
$l = strlen($buf);
if($l === 1)
$ret .= "\xd4";
elseif($l === 2)
$ret .= "\xd5";
elseif($l === 4)
$ret .= "\xd6";
elseif($l === 8)
$ret .= "\xd7";
elseif($l === 16)
$ret .= "\xd8";
elseif($l < 256)
$ret .= "\xc7" . chr($l);
elseif($l < 65536)
$ret .= "\xc8" . pack(self::$i16, $l);
else
$ret .= "\xc9" . pack(self::$i32, $l);

$ret .= chr($ext['ty']) . $buf;
return$ret;
 }
 }
switch($ty) {
case'NULL':
return"\xc0";
case'boolean':
return$obj ? "\xc3" : "\xc2";
case'double':
if(floor($obj) !== $obj) {
if(self::needsF64($obj))
return"\xcb" . pack(self::$f64, $obj);
return"\xca" . pack(self::$f32, $obj);
 }
// fallthrough for fractionless doubles
case'integer':
// signed
if($obj < 0) {
if($obj >= -32)
returnchr($obj);
if($obj >= -128)
return"\xd0" . chr($obj);
if($obj >= -32768)
return"\xd1" . pack(self::$i16, $obj);
if($obj >= -0x100000000)
return"\xd2" . pack(self::$i32, $obj);
return"\xd3" . pack(self::$i32, floor($obj/0x100000000)) . pack(self::$i32, $obj >> 0);
 }

// unsigned
if($obj < 128)
returnchr($obj);
if($obj < 256)
return"\xcc" . chr($obj);
if($obj < 65536)
return"\xcd" . pack(self::$i16, $obj);
if($obj < 0x100000000)
return"\xce" . pack(self::$i32, $obj);
return"\xcf" . pack(self::$i32, $obj / 0x100000000) . pack(self::$i32, $obj >> 0);
case'string': // treat as buffers
if(self::$strsAsBufs) {
$l = strlen($obj);
if($l < 256)
returnchr(0xc4) . chr($l) . $obj;
if($l < 65536)
returnchr(0xc5) . pack(self::$i16, $l) . $obj;
returnchr(0xc6) . pack(self::$i32, $l) . $obj;
 }
$l = strlen($obj);
if($l < 32)
returnchr(0xa0 | $l) . $obj;
if($l < 256)
returnchr(0xd9) . chr($l) . $obj;
if($l < 65536)
returnchr(0xda) . pack(self::$i16, $l) . $obj;
returnchr(0xdb) . pack(self::$i32, $l) . $obj;
case'array':
if(self::isArray($obj)) {
$l = count($obj);
$buf = '';
if($l < 16)
$buf .= chr(0x90 | $l);
elseif($l < 65536)
$buf .= "\xdc" . pack(self::$i16, $l);
else
$buf .= "\xdd" . pack(self::$i32, $l);

for($i=0;$i<$l;$i++)
$buf .= self::enc($obj[$i]);
return$buf;
 }
// associative arrays fall through
case'object':
$l = 0;
$buf = '';
foreach($objas$v) $l++;

if($l < 16)
$buf .= chr(0x80 | $l);
elseif($l < 65536)
$buf .= "\xde" . pack(self::$i16, $l);
else
$buf .= "\xdf" . pack(self::$i32, $l);

foreach($objas$k => $v)
$buf .= self::enc($k) . self::enc($v);
return$buf;
 }
thrownewException("MsgPack Error: Could not encode value of type $ty");
	}

privatestaticfunctiondec() {
$b = ord(self::read(1));
if(($b&0x80) === 0) return$b; // +fixint
if(($b&0xe0) === 0xe0) return$b|(-1^255); // -fixint
if(($b&0xf0) === 0x80) returnself::dec_obj($b&15); // fixmap
if(($b&0xf0) === 0x90) returnself::dec_arr($b&15); // fixarray
if(($b&0xe0) === 0xa0) returnself::read($b&31); // fixstr
switch($b) {
case0xc1: thrownewException("MsgPack Error: Encountered reserved type 0xc1");
case0xc0: returnNULL; // nil
case0xc2: returnFALSE; // false
case0xc3: returnTRUE; // true
case0xd9: case0xc4: returnself::read(ord(self::read(1))); // bin 8 / str 8
case0xda: case0xc5: returnself::read(self::ui16()); // bin 16 / str 16
case0xdb: case0xc6: returnself::read(self::ui32()); // bin 32 / str 32
case0xc7: $l = ord(self::read(1)); returnself::dec_ext(ord(self::read(1)),self::read($l)); // ext 8
case0xc8: $l = self::ui16(); returnself::dec_ext(ord(self::read(1)),self::read($l)); // ext 16
case0xc9: $l = self::ui32(); returnself::dec_ext(ord(self::read(1)),self::read($l)); // ext 32
case0xca: returnself::f32(); // float 32
case0xcb: returnself::f64(); // float 64
case0xcc: returnord(self::read(1)); // uint 8
case0xcd: returnself::ui16(); // uint 16
case0xce: returnself::ui32(); // uint 32
case0xcf: returnself::ui64(); // uint 64
case0xd0: returnord(self::read(1)); // int 8
case0xd1: returnself::i16(); // int 16
case0xd2: returnself::i32(); // int 32
case0xd3: returnself::i64(); // int 64
case0xd4: returnself::dec_ext(ord(self::read(1)),self::read(1)); // fixext 1
case0xd5: returnself::dec_ext(ord(self::read(1)),self::read(2)); // fixext 2
case0xd6: returnself::dec_ext(ord(self::read(1)),self::read(4)); // fixext 4
case0xd7: returnself::dec_ext(ord(self::read(1)),self::read(8)); // fixext 8
case0xd8: returnself::dec_ext(ord(self::read(1)),self::read(16)); // fixext 16
case0xdc: returnself::dec_arr(self::ui16()); // array 16
case0xdd: returnself::dec_arr(self::ui32()); // array 32
case0xde: returnself::dec_obj(self::ui16()); // map 16
case0xdf: returnself::dec_obj(self::ui32()); // map 32
 }
thrownewException("MsgPack Error: Somehow encountered unknown byte code: $b");
	}

publicstaticfunctionencode($obj,$settings=array()) {
self::$strsAsBufs = isset($settings['stringbuffers']) ? $settings['stringbuffers'] : FALSE;
$testRecursion = isset($settings['testrecursion']) ? $settings['testrecursion'] : FALSE;

if($settings === TRUE) self::$strsAsBufs = TRUE;

if($testRecursion) {
if(self::detectRecursion($obj))
thrownewException('MsgPack Error: Recursive structure detected');
 }
$encoded = self::enc($obj);

return$encoded;
	}

publicstaticfunctiondecode($str,$settings=array()) {
self::$assocArrays = isset($settings['associative']) ? $settings['associative'] : FALSE;

if($settings === TRUE) self::$assocArrays = TRUE;

self::$buffer = $str;
self::$pos = 0;
$decoded = self::dec();

if(self::$pos < strlen(self::$buffer))
thrownewException("MsgPack Error: Trying to decode more data than expected");

self::$buffer = NULL;

return$decoded;
	}

publicstaticfunctionextend($ext,$core=FALSE) {
$type = intval($ext['type']);
$typeof = isset($ext['varType']) ? $ext['varType'] : 'object';
$encode = $ext['encode'];
$decode = $ext['decode'];

if(!$core && $type < 0)
thrownewException("MsgPack Error: Non-core extension cannot have negative type $type");
if($type < -128 || $type > 127)
thrownewException("MsgPack Error: Type code for extension is out of range: $type");
if(!is_callable($encode))
thrownewException("MsgPack Error: Extension for code $type must have callable 'encode'");
if(!is_callable($decode))
thrownewException("MsgPack Error: Extension for code $type must have callable 'decode'");
if(isset(self::$extensionCodes[$type]))
thrownewException("MsgPack Error: Trying to register extension code $type more than once");

$ext = array(
'ty' => $type,
'enc' => $encode,
'dec' => $decode,
 );

if(!isset(self::$extensions[$typeof]))
self::$extensions[$typeof] = array();
self::$extensions[$typeof] []= $ext;
self::$extensionCodes[$type] = $ext;
	}
}

MsgPack::extend(array(
'type' => -1,
'encode' => function($obj) {
if(!($objinstanceof DateTime)) returnFALSE;

$secs = floatval($obj->format('U'));
$nano = floatval($obj->format('u'))*1000;
if($secs < 0 || $secs > 0x3ffffffff)
returnpack('NNN', $nano, floor($secs/0x100000000), $secs >> 0);
if($nano || $secs > 0xffffffff)
returnpack('NN', $nano*4 + ($secs/0x100000000 & 3), $secs >> 0);
returnpack('N', $secs >> 0);
	},
'decode' => function($data) {
$secs = 0;
$nano = 0;

switch(strlen($data)) {
case4:
$time = unpack('Ns', $data);
$secs = $time['s'];
if($secs < 0) $secs += 0x100000000;
break;
case8:
$time = unpack('Nn/Ns', $data);
$nano = $time['n'];
$secs = $time['s'];
if($secs < 0) $secs += 0x100000000;
if($nano < 0) $nano += 0x100000000;
$secs += ($nano & 3) * 0x100000000;
$nano = floor($nano / 4);
break;
case12:
$time = unpack('Nn/Na/Nb', $data);
$nano = $time['n'];
$a = $time['a'];
$b = $time['b'];
if($nano < 0) $nano += 0x100000000;
if($b < 0) $b += 0x100000000; // a is signed
$secs = $a * 0x100000000 + $b;
var_dump($secs);
break;
default:
thrownewException("MsgPack Error: Failed to decode Timestamp: Unknown timestamp encoding version with length ".strlen($data));
 }
var_dump(sprintf('%0.0f %06d UTC',$secs,$nano/1000));
return DateTime::createFromFormat('U u T',sprintf('%0.0f %06d UTC',$secs,$nano/1000));
	},
),TRUE);

endif;

?>