Improved NBT json parsing, attribute base

This commit is contained in:
Shoghi Cervantes
2015-08-08 22:39:43 +02:00
parent f5429ef585
commit a9ead5567b
7 changed files with 514 additions and 36 deletions

View File

@ -181,6 +181,257 @@ class NBT{
return true;
}
public static function parseJSON($data, &$offset = 0){
$len = strlen($data);
for(; $offset < $len; ++$offset){
$c = $data{$offset};
if($c === "{"){
++$offset;
$data = self::parseCompound($data, $offset);
return new Compound("", $data);
}elseif($c !== " " and $c !== "\r" and $c !== "\n" and $c !== "\t"){
throw new \Exception("Syntax error: unexpected '$c' at offset $offset");
}
}
return null;
}
private static function parseList($str, &$offset = 0){
$len = strlen($str);
$key = 0;
$value = null;
$data = [];
for(; $offset < $len; ++$offset){
if($str{$offset - 1} === "]"){
break;
}elseif($str{$offset} === "]"){
++$offset;
break;
}
$value = self::readValue($str, $offset, $type);
switch($type){
case NBT::TAG_Byte:
$data[$key] = new Byte($key, $value);
break;
case NBT::TAG_Short:
$data[$key] = new Short($key, $value);
break;
case NBT::TAG_Int:
$data[$key] = new Int($key, $value);
break;
case NBT::TAG_Long:
$data[$key] = new Long($key, $value);
break;
case NBT::TAG_Float:
$data[$key] = new Float($key, $value);
break;
case NBT::TAG_Double:
$data[$key] = new Double($key, $value);
break;
case NBT::TAG_ByteArray:
$data[$key] = new ByteArray($key, $value);
break;
case NBT::TAG_String:
$data[$key] = new Byte($key, $value);
break;
case NBT::TAG_Enum:
$data[$key] = new Enum($key, $value);
break;
case NBT::TAG_Compound:
$data[$key] = new Compound($key, $value);
break;
case NBT::TAG_IntArray:
$data[$key] = new IntArray($key, $value);
break;
}
$key++;
}
return $data;
}
private static function parseCompound($str, &$offset = 0){
$len = strlen($str);
$data = [];
for(; $offset < $len; ++$offset){
if($str{$offset - 1} === "}"){
break;
}elseif($str{$offset} === "}"){
++$offset;
break;
}
$key = self::readKey($str, $offset);
$value = self::readValue($str, $offset, $type);
switch($type){
case NBT::TAG_Byte:
$data[$key] = new Byte($key, $value);
break;
case NBT::TAG_Short:
$data[$key] = new Short($key, $value);
break;
case NBT::TAG_Int:
$data[$key] = new Int($key, $value);
break;
case NBT::TAG_Long:
$data[$key] = new Long($key, $value);
break;
case NBT::TAG_Float:
$data[$key] = new Float($key, $value);
break;
case NBT::TAG_Double:
$data[$key] = new Double($key, $value);
break;
case NBT::TAG_ByteArray:
$data[$key] = new ByteArray($key, $value);
break;
case NBT::TAG_String:
$data[$key] = new Byte($key, $value);
break;
case NBT::TAG_Enum:
$data[$key] = new Enum($key, $value);
break;
case NBT::TAG_Compound:
$data[$key] = new Compound($key, $value);
break;
case NBT::TAG_IntArray:
$data[$key] = new IntArray($key, $value);
break;
}
}
return $data;
}
private static function readValue($data, &$offset, &$type = null){
$value = "";
$type = null;
$inQuotes = false;
$len = strlen($data);
for(; $offset < $len; ++$offset){
$c = $data{$offset};
if(!$inQuotes and ($c === " " or $c === "\r" or $c === "\n" or $c === "\t" or $c === "," or $c === "}" or $c === "]")){
if($c === "," or $c === "}" or $c === "]"){
break;
}
}elseif($c === '"'){
$inQuotes = !$inQuotes;
if($type === null){
$type = self::TAG_String;
}elseif($inQuotes){
throw new \Exception("Syntax error: invalid quote at offset $offset");
}
}elseif($c === "\\"){
$value .= "\\" . isset($data{$offset + 1}) ? $data{$offset + 1} : "";
++$offset;
}elseif($c === "{" and !$inQuotes){
if($value !== ""){
throw new \Exception("Syntax error: invalid compound start at offset $offset");
}
++$offset;
$value = self::parseCompound($data, $offset);
$type = self::TAG_Compound;
break;
}elseif($c === "[" and !$inQuotes){
if($value !== ""){
throw new \Exception("Syntax error: invalid list start at offset $offset");
}
++$offset;
$value = self::parseList($data, $offset);
$type = self::TAG_Enum;
break;
}else{
$value .= $c;
}
}
if($value === ""){
throw new \Exception("Syntax error: invalid empty value at offset $offset");
}
if($type === null and strlen($value) > 0){
$value = trim($value);
$last = strtolower(substr($value, -1));
$part = substr($value, 0, -1);
if($last !== "b" and $last !== "s" and $last !== "l" and $last !== "f" and $last !== "d"){
$part = $value;
$last = null;
}
if($last !== "f" and $last !== "d" and ((string) ((int) $part)) === $part){
if($last === "b"){
$type = self::TAG_Byte;
}elseif($last === "s"){
$type = self::TAG_Short;
}elseif($last === "l"){
$type = self::TAG_Long;
}else{
$type = self::TAG_Int;
}
$value = (int) $part;
}elseif(is_numeric($part)){
if($last === "f" or $last === "d" or strpos($part, ".") !== false){
if($last === "f"){
$type = self::TAG_Float;
}elseif($last === "d"){
$type = self::TAG_Double;
}else{
$type = self::TAG_Float;
}
$value = (float) $part;
}else{
if($last === "l"){
$type = self::TAG_Long;
}else{
$type = self::TAG_Int;
}
$value = $part;
}
}else{
$type = self::TAG_String;
}
}
return $value;
}
private static function readKey($data, &$offset){
$key = "";
$len = strlen($data);
for(; $offset < $len; ++$offset){
$c = $data{$offset};
if($c === ":"){
++$offset;
break;
}elseif($c !== " " and $c !== "\r" and $c !== "\n" and $c !== "\t"){
$key .= $c;
}
}
if($key === ""){
throw new \Exception("Syntax error: invalid empty key at offset $offset");
}
return $key;
}
public function get($len){
if($len < 0){
$this->offset = strlen($this->buffer) - 1;
@ -388,7 +639,21 @@ class NBT{
}
}
private static function fromArray(Tag $tag, array $data, $byteArray = false){
private static function fromArrayGuesser($key, $value){
if(is_int($value)){
return new Int($key, $value);
}elseif(is_float($value)){
return new Float($key, $value);
}elseif(is_string($value)){
return new String($key, $value);
}elseif(is_bool($value)){
return new Byte($key, $value ? 1 : 0);
}
return null;
}
private static function fromArray(Tag $tag, array $data, callable $guesser){
foreach($data as $key => $value){
if(is_array($value)){
$isNumeric = true;
@ -402,26 +667,19 @@ class NBT{
}
}
$tag{$key} = $isNumeric ? ($isIntArray ? new IntArray($key, []) : new Enum($key, [])) : new Compound($key, []);
self::fromArray($tag->{$key}, $value);
}elseif(is_int($value)){
$tag{$key} = new Int($key, $value);
}elseif(is_float($value)){
$tag{$key} = new Float($key, $value);
}elseif(is_string($value)){
if($byteArray and Utils::printable($value) !== $value){
$tag{$key} = new ByteArray($key, $value);
}else{
$tag{$key} = new String($key, $value);
self::fromArray($tag->{$key}, $value, $guesser);
}else{
$v = call_user_func($guesser, $key, $value);
if($v instanceof Tag){
$tag{$key} = $v;
}
}elseif(is_bool($value)){
$tag{$key} = new Byte($key, $value ? 1 : 0);
}
}
}
public function setArray(array $data, $byteArray = false){
public function setArray(array $data, callable $guesser = null){
$this->data = new Compound("", []);
self::fromArray($this->data, $data, $byteArray);
self::fromArray($this->data, $data, $guesser === null ? [self::class, "fromArrayGuesser"] : $guesser);
}
/**