woocommerce-pos / vendor_prefixed / dompdf / php-font-lib / src / FontLib / BinaryStream.php

BinaryStream.php in WCPOS – Point of Sale (POS) plugin for WooCommerce 1.10.17, at vendor_prefixed/dompdf/php-font-lib/src/FontLib/BinaryStream.php

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1	<?php
2
3	/**
4	* @package php-font-lib
5	* @link https://github.com/dompdf/php-font-lib
6	* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
7	*/
8	namespace WCPOS\Vendor\FontLib;
9
10	/**
11	* Generic font file binary stream.
12	*
13	* @package php-font-lib
14	*/
15	class BinaryStream
16	{
17	/**
18	* @var resource The file pointer
19	*/
20	protected $f;
21	const uint8 = 1;
22	const int8 = 2;
23	const uint16 = 3;
24	const int16 = 4;
25	const uint32 = 5;
26	const int32 = 6;
27	const shortFrac = 7;
28	const Fixed = 8;
29	const FWord = 9;
30	const uFWord = 10;
31	const F2Dot14 = 11;
32	const longDateTime = 12;
33	const char = 13;
34	const modeRead = "rb";
35	const modeWrite = "wb";
36	const modeReadWrite = "rb+";
37	static function backtrace()
38	{
39	\var_dump(\debug_backtrace(\DEBUG_BACKTRACE_IGNORE_ARGS));
40	}
41	/**
42	* Open a font file in read mode
43	*
44	* @param string $filename The file name of the font to open
45	*
46	* @return bool
47	*/
48	public function load($filename)
49	{
50	return $this->open($filename, self::modeRead);
51	}
52	/**
53	* Open a font file in a chosen mode
54	*
55	* @param string $filename The file name of the font to open
56	* @param string $mode The opening mode
57	*
58	* @throws \Exception
59	* @return bool
60	*/
61	public function open($filename, $mode = self::modeRead)
62	{
63	if (!\in_array($mode, array(self::modeRead, self::modeWrite, self::modeReadWrite))) {
64	throw new \Exception("Unknown file open mode");
65	}
66	$this->f = \fopen($filename, $mode);
67	return $this->f != \false;
68	}
69	/**
70	* Close the internal file pointer
71	*/
72	public function close()
73	{
74	return \fclose($this->f) != \false;
75	}
76	/**
77	* Change the internal file pointer
78	*
79	* @param resource $fp
80	*
81	* @throws \Exception
82	*/
83	public function setFile($fp)
84	{
85	if (!\is_resource($fp)) {
86	throw new \Exception('$fp is not a valid resource');
87	}
88	$this->f = $fp;
89	}
90	/**
91	* Create a temporary file in write mode
92	*
93	* @param bool $allow_memory Allow in-memory files
94	*
95	* @return resource the temporary file pointer resource
96	*/
97	public static function getTempFile($allow_memory = \true)
98	{
99	$f = null;
100	if ($allow_memory) {
101	$f = \fopen("php://temp", "rb+");
102	} else {
103	$f = \fopen(\tempnam(\sys_get_temp_dir(), "fnt"), "rb+");
104	}
105	return $f;
106	}
107	/**
108	* Move the internal file pinter to $offset bytes
109	*
110	* @param int $offset
111	*
112	* @return bool True if the $offset position exists in the file
113	*/
114	public function seek($offset)
115	{
116	return \fseek($this->f, (int) $offset, \SEEK_SET) == 0;
117	}
118	/**
119	* Gives the current position in the file
120	*
121	* @return int The current position
122	*/
123	public function pos()
124	{
125	return \ftell($this->f);
126	}
127	public function skip($n)
128	{
129	\fseek($this->f, $n, \SEEK_CUR);
130	}
131	/**
132	* @param int $n The number of bytes to read
133	*
134	* @return string
135	*/
136	public function read($n)
137	{
138	if ($n < 1) {
139	return "";
140	}
141	return (string) \fread($this->f, $n);
142	}
143	public function write($data, $length = null)
144	{
145	if ($data === null \|\| $data === "" \|\| $data === \false) {
146	return 0;
147	}
148	return \fwrite($this->f, $data, $length);
149	}
150	public function readUInt8()
151	{
152	$byte = $this->read(1);
153	if ($byte === '') {
154	return 0;
155	}
156	return \ord($byte);
157	}
158	public function readUInt8Many($count)
159	{
160	return \array_values(\unpack("C*", $this->read($count)));
161	}
162	public function writeUInt8($data)
163	{
164	return $this->write(\chr($data), 1);
165	}
166	public function readInt8()
167	{
168	$v = $this->readUInt8();
169	if ($v >= 0x80) {
170	$v -= 0x100;
171	}
172	return $v;
173	}
174	public function readInt8Many($count)
175	{
176	return \array_values(\unpack("c*", $this->read($count)));
177	}
178	public function writeInt8($data)
179	{
180	if ($data < 0) {
181	$data += 0x100;
182	}
183	return $this->writeUInt8($data);
184	}
185	public function readUInt16()
186	{
187	$a = \unpack("nn", $this->read(2));
188	return $a["n"];
189	}
190	public function readUInt16Many($count)
191	{
192	return \array_values(\unpack("n", $this->read($count 2)));
193	}
194	public function readUFWord()
195	{
196	return $this->readUInt16();
197	}
198	public function writeUInt16($data)
199	{
200	return $this->write(\pack("n", $data), 2);
201	}
202	public function writeUFWord($data)
203	{
204	return $this->writeUInt16($data);
205	}
206	public function readInt16()
207	{
208	$a = \unpack("nn", $this->read(2));
209	$v = $a["n"];
210	if ($v >= 0x8000) {
211	$v -= 0x10000;
212	}
213	return $v;
214	}
215	public function readInt16Many($count)
216	{
217	$vals = \array_values(\unpack("n", $this->read($count 2)));
218	foreach ($vals as &$v) {
219	if ($v >= 0x8000) {
220	$v -= 0x10000;
221	}
222	}
223	return $vals;
224	}
225	public function readFWord()
226	{
227	return $this->readInt16();
228	}
229	public function writeInt16($data)
230	{
231	if ($data < 0) {
232	$data += 0x10000;
233	}
234	return $this->writeUInt16($data);
235	}
236	public function writeFWord($data)
237	{
238	return $this->writeInt16($data);
239	}
240	public function readUInt32()
241	{
242	$a = \unpack("NN", $this->read(4));
243	return $a["N"];
244	}
245	public function writeUInt32($data)
246	{
247	return $this->write(\pack("N", $data), 4);
248	}
249	public function readFixed()
250	{
251	$d = $this->readInt16();
252	$d2 = $this->readUInt16();
253	return \round($d + $d2 / 0x10000, 4);
254	}
255	public function writeFixed($data)
256	{
257	$left = \floor($data);
258	$right = ($data - $left) * 0x10000;
259	return $this->writeInt16($left) + $this->writeUInt16($right);
260	}
261	public function readLongDateTime()
262	{
263	$this->readUInt32();
264	// ignored
265	$date = $this->readUInt32() - 2082844800;
266	# PHP_INT_MIN isn't defined in PHP < 7.0
267	$php_int_min = \defined("PHP_INT_MIN") ? \PHP_INT_MIN : ~\PHP_INT_MAX;
268	if (\is_string($date) \|\| $date > \PHP_INT_MAX \|\| $date < $php_int_min) {
269	$date = 0;
270	}
271	return \date("Y-m-d H:i:s", $date);
272	}
273	public function writeLongDateTime($data)
274	{
275	$date = \strtotime($data);
276	$date += 2082844800;
277	return $this->writeUInt32(0) + $this->writeUInt32($date);
278	}
279	public function unpack($def)
280	{
281	$d = array();
282	foreach ($def as $name => $type) {
283	$d[$name] = $this->r($type);
284	}
285	return $d;
286	}
287	public function pack($def, $data)
288	{
289	$bytes = 0;
290	foreach ($def as $name => $type) {
291	$bytes += $this->w($type, $data[$name]);
292	}
293	return $bytes;
294	}
295	/**
296	* Read a data of type $type in the file from the current position
297	*
298	* @param mixed $type The data type to read
299	*
300	* @return mixed The data that was read
301	*/
302	public function r($type)
303	{
304	switch ($type) {
305	case self::uint8:
306	return $this->readUInt8();
307	case self::int8:
308	return $this->readInt8();
309	case self::uint16:
310	return $this->readUInt16();
311	case self::int16:
312	return $this->readInt16();
313	case self::uint32:
314	return $this->readUInt32();
315	case self::int32:
316	return $this->readUInt32();
317	case self::shortFrac:
318	return $this->readFixed();
319	case self::Fixed:
320	return $this->readFixed();
321	case self::FWord:
322	return $this->readInt16();
323	case self::uFWord:
324	return $this->readUInt16();
325	case self::F2Dot14:
326	return $this->readInt16();
327	case self::longDateTime:
328	return $this->readLongDateTime();
329	case self::char:
330	return $this->read(1);
331	default:
332	if (\is_array($type)) {
333	if ($type[0] == self::char) {
334	return $this->read($type[1]);
335	}
336	if ($type[0] == self::uint16) {
337	return $this->readUInt16Many($type[1]);
338	}
339	if ($type[0] == self::int16) {
340	return $this->readInt16Many($type[1]);
341	}
342	if ($type[0] == self::uint8) {
343	return $this->readUInt8Many($type[1]);
344	}
345	if ($type[0] == self::int8) {
346	return $this->readInt8Many($type[1]);
347	}
348	$ret = array();
349	for ($i = 0; $i < $type[1]; $i++) {
350	$ret[] = $this->r($type[0]);
351	}
352	return $ret;
353	}
354	return null;
355	}
356	}
357	/**
358	* Write $data of type $type in the file from the current position
359	*
360	* @param mixed $type The data type to write
361	* @param mixed $data The data to write
362	*
363	* @return int The number of bytes read
364	*/
365	public function w($type, $data)
366	{
367	switch ($type) {
368	case self::uint8:
369	return $this->writeUInt8($data);
370	case self::int8:
371	return $this->writeInt8($data);
372	case self::uint16:
373	return $this->writeUInt16($data);
374	case self::int16:
375	return $this->writeInt16($data);
376	case self::uint32:
377	return $this->writeUInt32($data);
378	case self::int32:
379	return $this->writeUInt32($data);
380	case self::shortFrac:
381	return $this->writeFixed($data);
382	case self::Fixed:
383	return $this->writeFixed($data);
384	case self::FWord:
385	return $this->writeInt16($data);
386	case self::uFWord:
387	return $this->writeUInt16($data);
388	case self::F2Dot14:
389	return $this->writeInt16($data);
390	case self::longDateTime:
391	return $this->writeLongDateTime($data);
392	case self::char:
393	return $this->write($data, 1);
394	default:
395	if (\is_array($type)) {
396	if ($type[0] == self::char) {
397	return $this->write($data, $type[1]);
398	}
399	$ret = 0;
400	for ($i = 0; $i < $type[1]; $i++) {
401	if (isset($data[$i])) {
402	$ret += $this->w($type[0], $data[$i]);
403	}
404	}
405	return $ret;
406	}
407	return null;
408	}
409	}
410	/**
411	* Converts a Uint32 value to string
412	*
413	* @param int $uint32
414	*
415	* @return string The string
416	*/
417	public function convertUInt32ToStr($uint32)
418	{
419	return \chr($uint32 >> 24 & 0xff) . \chr($uint32 >> 16 & 0xff) . \chr($uint32 >> 8 & 0xff) . \chr($uint32 & 0xff);
420	}
421	}
422