mirror of
https://gitlab.com/hashborgir/d2tools.git
synced 2024-10-05 09:06:04 +00:00
116 lines
6.5 KiB
PHP
116 lines
6.5 KiB
PHP
<?php
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// from unpack('H*', file_get_contents("Char.d2s")) for 3v4l.org to read d2s file here
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$data = hex2bin('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');
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class D2ByteReader {
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private string $data;
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private int $offset = 0;
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public function __construct(string $data){
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if (!$data) return false;
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$this->data = $data;
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}
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public function skip(int $numBytes): bool {
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if ($numBytes < 0 || $numBytes > strlen($this->data)) return false;
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$this->offset += $numBytes;
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return $true;
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}
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public function seek(int $pos): bool {
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if ($pos < 0 || $pos > strlen($this->data)) return false;
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$this->offset = $pos;
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return true;
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}
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public function read(int $numBytes, bool $str = true){
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$bytes = null;
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for ($i = $this->offset; $i < $this->offset + $numBytes; $i++) {
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$str ? $bytes .= $this->data[$i] : $bytes[] = $this->data[$i];
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}
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return unpack('H*', $bytes);
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}
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public function rewind() : bool {
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$this->offset = 0;
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return true;
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}
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public function write8(int $offset, int $byte){
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$this->data[$offset] = pack('C', $byte);
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}
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public function writeBytes(int $offset, string $bytes){
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if ($offset < 0 || $offset > strlen($this->data) || $bytes == '') return false;
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$_bytes = str_split($bytes, 2);
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foreach($_bytes as $k => $byte){
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$pos = $offset + $k;
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$this->data[$pos] = pack('H*', $byte);
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}
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}
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public function getData(){
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return $this->data ? $this->data : false;
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}
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public function getOffset(): int {
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return $this->offset;
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}
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/*
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@return Byte with Nth bit set to X
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*/
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public function setBit(int $byte, int $pos, bool $bit){
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return ($bit ? ($byte | (1 << $pos)) : ($byte & ~(1 << $pos)) );
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}
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/*
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@return Bit at Nth position in Byte
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*/
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public function getBit(int $byte, int $pos) : int {
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return intval(($byte & (1 << $pos)) != 0);
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}
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}
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$c = new D2ByteReader($data);
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$c->seek(12);
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$checksum = $c->read(4);
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var_dump($checksum);
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$c->write8(12, 0xFF);
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$checksum = $c->read(4);
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var_dump($checksum);
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$c->writeBytes(12, "FFC0FDA1"); // invalid checksum, but just testing write. Works!
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$checksum = $c->read(4);
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var_dump($checksum);
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$c->writeBytes(12, "b5bc59b3"); // Valid checksum, but just testing write. Works!
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$checksum = $c->read(4);
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var_dump($checksum);
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/*
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Barely any binary functions, all string manipulation on binary files. Working!
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To just modify bits in an aligned byte, use setBit();
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To just get which bit is set in a byte, use getBit();
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To read X arbitary unaligned bits in bytes,
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Seek to offset,
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Read X bytes,
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Convert X bytes to bits,
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Reverse bit order in each byte
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Load D2BitReader,
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Modify nth Bit,
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Return all bits
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Convert to bytes
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Reverse bit order in byte
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Save bytes
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function setBit(int $n, int $p, bool $b){
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return ($b ? ($n | (1 << $p)) : ($n & ~(1 << $p)) );
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}
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function getBit(int $b, int $p){
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return intval(($b & (1 << $p)) != 0);
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}
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*/ |