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https://gitlab.com/hashborgir/d2tools.git
synced 2025-10-13 16:34:23 -05:00
Refactored items to proper classes
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154
src/D2ByteReader.php
Normal file
154
src/D2ByteReader.php
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@@ -0,0 +1,154 @@
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<?php
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require_once './src/D2Functions.php';
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require_once './src/D2BitReader.php';
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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)
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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))
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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))
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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 readh(int $offset, int $numBytes, bool $str = true): string {
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$this->seek($offset);
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$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)[1];
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}
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public function readc(int $offset, int $numBytes, bool $str = true): array {
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$this->seek($offset);
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$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('C*', $bytes);
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}
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public function rewind(): bool {
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$this->offset = 0;
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return true;
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}
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public function writeByte(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) || $bytes == '')
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return false;
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$_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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public function isHexString(string $str): bool {
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if (strlen($str) % 2 == 0 && (ctype_xdigit($str))) {
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return true;
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}
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return false;
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}
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public function toBits($input): string {
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$output = '';
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if ($this->isHexString($input)) {
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foreach (str_split($input, 2) as $byte) {
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$output .= (strrev(str_pad(decbin(hexdec($byte)), 8, 0, STR_PAD_LEFT)));
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}
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return $output;
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} else if (is_string($input)) {
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foreach (str_split($input) as $i) {
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$output .= strrev(str_pad(decbin(ord($i)), 8, 0, STR_PAD_LEFT));
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}
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return $output;
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} else if (is_int($input)) {
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return strrev(str_pad(decbin($input), 8, 0, STR_PAD_LEFT));
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} else if (is_array($input)) {
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foreach ($input as $i) {
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$output .= $this->tobits($i);
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}
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return $output;
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}
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}
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public function toBytes(string $bits) {
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foreach (str_split($bits, 8) as $byteString) {
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$bytes[] = (bindec(strrev($byteString)));
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}
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foreach ($bytes as $byte) {
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dump($byte);
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}
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}
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public function bitsToHexString(string $bits): string {
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$bytes = '';
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foreach (str_split($bits, 8) as $byte) {
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$bytes .= (str_pad(dechex((bindec(strrev($byte)))), 2, 0, STR_PAD_LEFT));
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}
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return $bytes;
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}
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public function bitsToHexArray(string $bits): array {
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$bytes = [];
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foreach (str_split($bits, 8) as $byte) {
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$bytes[] = (str_pad(dechex((bindec(strrev($byte)))), 2, 0, STR_PAD_LEFT));
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}
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return $bytes;
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}
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public function bitsToIntArray(string $bits): array {
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$bytes = [];
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foreach (str_split($bits, 8) as $byte) {
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$bytes[] = (int) (str_pad(dechex((bindec(strrev($byte)))), 2, 0, STR_PAD_LEFT));
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}
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return $bytes;
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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 << $pos)) != 0);
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}
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}
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@@ -5,6 +5,7 @@ require_once 'D2Files.php';
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require_once 'D2BitReader.php';
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require_once 'D2Strings.php';
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require_once 'D2Item.php';
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require_once 'D2ByteReader.php';
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class D2Char {
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@@ -31,32 +32,25 @@ class D2Char {
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}
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public function parseItems() {
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$_data = file_get_contents($this->filePath);
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// get offset of first JM and skip it
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$_offset = strpos($_data, "JM") + 2;
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// seek to items_total offset
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fseek($this->fp, $_offset);
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// item total is a SHORT 16 bits, 2 bytes
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$_total = unpack('S*', (fread($this->fp, 2)))[1];
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$data = file_get_contents($this->filePath);
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$ByteReader = new D2ByteReader($data);
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$i_TotalOffset = strpos($data, "JM");
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fseek($this->fp, $i_TotalOffset + 2);
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$i_Total = unpack('S*', (fread($this->fp, 2)))[1];
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// Items start from 2nd JM
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for ($i = 2; $i <= $_total; $i++) {
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// seek to Each JM (every item begins with JM
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fseek($this->fp, strposX($_data, 'JM', $i));
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// read and unpack 21 bytes as array of byte/char (8 bit each)
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$_items[] = unpack('C*', fread($this->fp, 21));
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$i_Offsets = [];
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for ($i = 0; $i <= $i_Total; $i++) {
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$i_Offsets[] = strposX($data, "JM", $i + 2);
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}
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// Convert item bytes to 21x8 bitfield
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// each byte is reversed with strrev() for correct bit position
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// to convert back to ascii, read bits from any position, reverse, bindec(chr())
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foreach ($_items as $_item) {
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$item = null;
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foreach ($_item as $i_bytes) {
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$item .= strrev(str_pad(decbin($i_bytes), 8, 0, STR_PAD_LEFT));
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// $item .= (str_pad(dechex($i_bytes), 2, 0, STR_PAD_LEFT));
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}
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$this->items[] = new D2Item($item); // return an array of item details
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foreach ($i_Offsets as $k => $v) {
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$itemOffsets[$v] = $i_Offsets[$k + 1] - $i_Offsets[$k];
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}
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array_pop($itemOffsets);
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$_items=[];
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foreach ($itemOffsets as $offset => $bytes) {
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$this->items[] = new D2Item($ByteReader->toBits($ByteReader->readh($offset, $bytes)));
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}
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}
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public function parseChar() {
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@@ -42,7 +42,7 @@ $form = new Formr\Formr();
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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//ddump($charData);
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ddump($charData);
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?>
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