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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <dev@noladev.com> |
| 8 | * @copyright Copyright (c) 2009-2027 NOLA Interactive, LLC. |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\Http; |
| 16 | |
| 17 | use Psr\Http\Message\StreamInterface; |
| 18 | |
| 19 | /** |
| 20 | * HTTP body class |
| 21 | * |
| 22 | * @category Pop |
| 23 | * @package Pop\Http |
| 24 | * @author Nick Sagona, III <dev@noladev.com> |
| 25 | * @copyright Copyright (c) 2009-2027 NOLA Interactive, LLC. |
| 26 | * @license https://www.popphp.org/license New BSD License |
| 27 | * @version 6.0.0 |
| 28 | */ |
| 29 | class Body implements StreamInterface |
| 30 | { |
| 31 | |
| 32 | /** |
| 33 | * Encoding constants |
| 34 | * @var string |
| 35 | */ |
| 36 | const BASE64 = 'BASE64'; |
| 37 | const QUOTED = 'QUOTED'; |
| 38 | const URL = 'URL'; |
| 39 | const RAW_URL = 'RAW_URL'; |
| 40 | |
| 41 | /** |
| 42 | * Underlying content stream. All content - string-set or file-backed - lives here. |
| 43 | * @var resource|null |
| 44 | */ |
| 45 | protected mixed $stream = null; |
| 46 | |
| 47 | /** |
| 48 | * Encoding |
| 49 | * @var ?string |
| 50 | */ |
| 51 | protected ?string $encoding = null; |
| 52 | |
| 53 | /** |
| 54 | * Chunk split |
| 55 | * @var int|bool|null |
| 56 | */ |
| 57 | protected int|bool|null $split = null; |
| 58 | |
| 59 | /** |
| 60 | * Is file flag |
| 61 | * @var bool |
| 62 | */ |
| 63 | protected bool $isFile = false; |
| 64 | |
| 65 | /** |
| 66 | * Is encoded flag |
| 67 | * @var bool |
| 68 | */ |
| 69 | protected bool $isEncoded = false; |
| 70 | |
| 71 | /** |
| 72 | * Constructor |
| 73 | * |
| 74 | * Instantiate the body object |
| 75 | * |
| 76 | * @param ?string $content |
| 77 | * @param ?string $encoding |
| 78 | * @param int|bool|null $split |
| 79 | */ |
| 80 | public function __construct(?string $content = null, ?string $encoding = null, int|bool|null $split = null) |
| 81 | { |
| 82 | if ($content !== null) { |
| 83 | $this->setContent($content); |
| 84 | } |
| 85 | if ($encoding !== null) { |
| 86 | $this->setEncoding($encoding); |
| 87 | } |
| 88 | if ($split !== null) { |
| 89 | $this->setSplit($split); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * Set the body content from a string |
| 95 | * |
| 96 | * @param string $content |
| 97 | * @return Body |
| 98 | */ |
| 99 | public function setContent(string $content): Body |
| 100 | { |
| 101 | $this->stream = fopen('php://temp', 'r+'); |
| 102 | fwrite($this->stream, $content); |
| 103 | rewind($this->stream); |
| 104 | $this->isFile = false; |
| 105 | |
| 106 | return $this; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Get the body content as a string |
| 111 | * |
| 112 | * Reads the entire underlying stream and restores its read position |
| 113 | * afterward, so repeated calls return the same content. |
| 114 | * |
| 115 | * @return string |
| 116 | */ |
| 117 | public function getContent(): string |
| 118 | { |
| 119 | if ($this->stream === null) { |
| 120 | return ''; |
| 121 | } |
| 122 | |
| 123 | $position = ftell($this->stream); |
| 124 | rewind($this->stream); |
| 125 | $content = stream_get_contents($this->stream); |
| 126 | fseek($this->stream, $position); |
| 127 | |
| 128 | return $content; |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Has body content |
| 133 | * |
| 134 | * @return bool |
| 135 | */ |
| 136 | public function hasContent(): bool |
| 137 | { |
| 138 | return ($this->stream !== null); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Set the body content from a file, without buffering it into memory |
| 143 | * |
| 144 | * @param string $file |
| 145 | * @param ?string $encoding |
| 146 | * @param int|bool|null $split |
| 147 | * @throws Exception |
| 148 | * @return Body |
| 149 | */ |
| 150 | public function setContentFromFile(string $file, ?string $encoding = null, int|bool|null $split = null): Body |
| 151 | { |
| 152 | if (!file_exists($file)) { |
| 153 | throw new Exception("Error: The file '" . $file . "' does not exist."); |
| 154 | } |
| 155 | |
| 156 | $stream = @fopen($file, 'rb'); |
| 157 | if ($stream === false) { |
| 158 | throw new Exception("Error: Unable to open the file '" . $file . "' for reading."); |
| 159 | } |
| 160 | |
| 161 | $this->stream = $stream; |
| 162 | $this->isFile = true; |
| 163 | |
| 164 | if ($encoding !== null) { |
| 165 | $this->setEncoding($encoding); |
| 166 | } |
| 167 | if ($split !== null) { |
| 168 | $this->setSplit($split); |
| 169 | } |
| 170 | |
| 171 | return $this; |
| 172 | } |
| 173 | |
| 174 | /** |
| 175 | * Set the body content directly from an existing stream resource |
| 176 | * |
| 177 | * If the given stream is known to be backed by a real file (e.g. a handle returned |
| 178 | * from fopen() on a local file), chain ->setAsFile(true) afterward to flag it as such, |
| 179 | * since this method has no reliable way to detect that on its own. |
| 180 | * |
| 181 | * @param mixed $stream |
| 182 | * @return Body |
| 183 | */ |
| 184 | public function setContentFromStream(mixed $stream): Body |
| 185 | { |
| 186 | $this->stream = $stream; |
| 187 | return $this; |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * Get the raw underlying stream resource, for a consumer that wants to |
| 192 | * copy bytes directly (e.g. to the network) without materializing the |
| 193 | * whole content as a PHP string. |
| 194 | * |
| 195 | * @return mixed |
| 196 | */ |
| 197 | public function getStream(): mixed |
| 198 | { |
| 199 | return $this->stream; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Close the underlying stream |
| 204 | * |
| 205 | * @return void |
| 206 | */ |
| 207 | public function close(): void |
| 208 | { |
| 209 | if ($this->stream !== null) { |
| 210 | fclose($this->stream); |
| 211 | $this->stream = null; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Detach the underlying stream resource, leaving the Body empty |
| 217 | * |
| 218 | * @return mixed |
| 219 | */ |
| 220 | public function detach(): mixed |
| 221 | { |
| 222 | $stream = $this->stream; |
| 223 | $this->stream = null; |
| 224 | return $stream; |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Get the content size in bytes, without reading file-backed content |
| 229 | * into memory to compute it. Per PSR-7, returns null if the stream size |
| 230 | * is not statable (e.g. php://output). |
| 231 | * |
| 232 | * @return int|null |
| 233 | */ |
| 234 | public function getSize(): ?int |
| 235 | { |
| 236 | if ($this->stream === null) { |
| 237 | return 0; |
| 238 | } |
| 239 | |
| 240 | // Not every stream is statable (php://output, some sockets/pipes); fstat() returns false |
| 241 | // for those, and per StreamInterface that means "size unknown", not zero. |
| 242 | $stat = @fstat($this->stream); |
| 243 | |
| 244 | return ($stat === false) ? null : $stat['size']; |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * Get the current position of the stream read/write pointer |
| 249 | * |
| 250 | * @throws Exception |
| 251 | * @return int |
| 252 | */ |
| 253 | public function tell(): int |
| 254 | { |
| 255 | if ($this->stream === null) { |
| 256 | throw new Exception('Error: No stream is available.'); |
| 257 | } |
| 258 | |
| 259 | $position = ftell($this->stream); |
| 260 | if ($position === false) { |
| 261 | throw new Exception('Error: Unable to determine the stream position.'); |
| 262 | } |
| 263 | |
| 264 | return $position; |
| 265 | } |
| 266 | |
| 267 | /** |
| 268 | * Determine if the stream is at end-of-file |
| 269 | * |
| 270 | * @return bool |
| 271 | */ |
| 272 | public function eof(): bool |
| 273 | { |
| 274 | return ($this->stream === null) || feof($this->stream); |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Determine if the stream is seekable |
| 279 | * |
| 280 | * @return bool |
| 281 | */ |
| 282 | public function isSeekable(): bool |
| 283 | { |
| 284 | if ($this->stream === null) { |
| 285 | return false; |
| 286 | } |
| 287 | |
| 288 | return (bool)stream_get_meta_data($this->stream)['seekable']; |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * Seek to a position in the stream |
| 293 | * |
| 294 | * @param int $offset |
| 295 | * @param int $whence |
| 296 | * @throws Exception |
| 297 | * @return void |
| 298 | */ |
| 299 | public function seek(int $offset, int $whence = SEEK_SET): void |
| 300 | { |
| 301 | if (($this->stream === null) || (!$this->isSeekable()) || (fseek($this->stream, $offset, $whence) === -1)) { |
| 302 | throw new Exception('Error: Unable to seek the stream.'); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | /** |
| 307 | * Seek to the beginning of the stream |
| 308 | * |
| 309 | * @throws Exception |
| 310 | * @return void |
| 311 | */ |
| 312 | public function rewind(): void |
| 313 | { |
| 314 | $this->seek(0); |
| 315 | } |
| 316 | |
| 317 | /** |
| 318 | * Determine if the stream is writable |
| 319 | * |
| 320 | * @return bool |
| 321 | */ |
| 322 | public function isWritable(): bool |
| 323 | { |
| 324 | if ($this->stream === null) { |
| 325 | return false; |
| 326 | } |
| 327 | |
| 328 | $mode = stream_get_meta_data($this->stream)['mode']; |
| 329 | |
| 330 | return (str_contains($mode, 'w') || str_contains($mode, 'a') || str_contains($mode, '+') || str_contains($mode, 'x') || str_contains($mode, 'c')); |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Write data to the stream |
| 335 | * |
| 336 | * @param string $string |
| 337 | * @throws Exception |
| 338 | * @return int |
| 339 | */ |
| 340 | public function write(string $string): int |
| 341 | { |
| 342 | if ($this->stream === null) { |
| 343 | throw new Exception('Error: No stream is available.'); |
| 344 | } |
| 345 | |
| 346 | $result = fwrite($this->stream, $string); |
| 347 | if ($result === false) { |
| 348 | throw new Exception('Error: Unable to write to the stream.'); |
| 349 | } |
| 350 | |
| 351 | return $result; |
| 352 | } |
| 353 | |
| 354 | /** |
| 355 | * Determine if the stream is readable |
| 356 | * |
| 357 | * @return bool |
| 358 | */ |
| 359 | public function isReadable(): bool |
| 360 | { |
| 361 | if ($this->stream === null) { |
| 362 | return false; |
| 363 | } |
| 364 | |
| 365 | $mode = stream_get_meta_data($this->stream)['mode']; |
| 366 | |
| 367 | return (str_contains($mode, 'r') || str_contains($mode, '+')); |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * Read up to $length bytes from the stream |
| 372 | * |
| 373 | * @param int $length |
| 374 | * @throws Exception |
| 375 | * @return string |
| 376 | */ |
| 377 | public function read(int $length): string |
| 378 | { |
| 379 | if ($this->stream === null) { |
| 380 | throw new Exception('Error: No stream is available.'); |
| 381 | } |
| 382 | |
| 383 | $result = fread($this->stream, $length); |
| 384 | if ($result === false) { |
| 385 | throw new Exception('Error: Unable to read from the stream.'); |
| 386 | } |
| 387 | |
| 388 | return $result; |
| 389 | } |
| 390 | |
| 391 | /** |
| 392 | * Get the remaining raw stream contents, per PSR-7 - bypasses render()'s |
| 393 | * encoding/split transforms, unlike __toString() |
| 394 | * |
| 395 | * @throws Exception |
| 396 | * @return string |
| 397 | */ |
| 398 | public function getContents(): string |
| 399 | { |
| 400 | return $this->getContent(); |
| 401 | } |
| 402 | |
| 403 | /** |
| 404 | * Get stream metadata |
| 405 | * |
| 406 | * @param ?string $key |
| 407 | * @return mixed |
| 408 | */ |
| 409 | public function getMetadata(?string $key = null): mixed |
| 410 | { |
| 411 | if ($this->stream === null) { |
| 412 | return ($key === null) ? [] : null; |
| 413 | } |
| 414 | |
| 415 | $meta = stream_get_meta_data($this->stream); |
| 416 | |
| 417 | return ($key === null) ? $meta : ($meta[$key] ?? null); |
| 418 | } |
| 419 | |
| 420 | /** |
| 421 | * Deep-duplicate the underlying stream resource so a clone never shares |
| 422 | * a read/write position with the instance it was cloned from |
| 423 | * |
| 424 | * @return void |
| 425 | */ |
| 426 | public function __clone(): void |
| 427 | { |
| 428 | if ($this->stream !== null) { |
| 429 | $position = ftell($this->stream); |
| 430 | |
| 431 | // File-backed content is duplicated by reopening the same file handle |
| 432 | // rather than copying its bytes, preserving setContentFromFile()'s intent |
| 433 | // of never buffering large files into memory (or a php://temp fallback). |
| 434 | if ($this->isFile) { |
| 435 | $meta = stream_get_meta_data($this->stream); |
| 436 | $duplicate = (!empty($meta['uri'])) ? @fopen($meta['uri'], 'rb') : false; |
| 437 | if ($duplicate !== false) { |
| 438 | fseek($duplicate, $position); |
| 439 | $this->stream = $duplicate; |
| 440 | return; |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | $duplicate = fopen('php://temp', 'r+'); |
| 445 | rewind($this->stream); |
| 446 | stream_copy_to_stream($this->stream, $duplicate); |
| 447 | fseek($this->stream, $position); |
| 448 | // Note: duplicate is left at the end by stream_copy_to_stream(), not reset |
| 449 | $this->stream = $duplicate; |
| 450 | } |
| 451 | } |
| 452 | |
| 453 | /** |
| 454 | * Set the encoding |
| 455 | * |
| 456 | * @param string $encoding |
| 457 | * @return Body |
| 458 | */ |
| 459 | public function setEncoding(string $encoding): Body |
| 460 | { |
| 461 | switch ($encoding) { |
| 462 | case self::BASE64: |
| 463 | case self::QUOTED: |
| 464 | case self::URL: |
| 465 | case self::RAW_URL: |
| 466 | $this->encoding = $encoding; |
| 467 | } |
| 468 | return $this; |
| 469 | } |
| 470 | |
| 471 | /** |
| 472 | * Get the encoding |
| 473 | * |
| 474 | * @return string|null |
| 475 | */ |
| 476 | public function getEncoding(): string|null |
| 477 | { |
| 478 | return $this->encoding; |
| 479 | } |
| 480 | |
| 481 | /** |
| 482 | * Has encoding |
| 483 | * |
| 484 | * @return bool |
| 485 | */ |
| 486 | public function hasEncoding(): bool |
| 487 | { |
| 488 | return ($this->encoding !== null); |
| 489 | } |
| 490 | |
| 491 | /** |
| 492 | * Is encoding base64 |
| 493 | * |
| 494 | * @return bool |
| 495 | */ |
| 496 | public function isBase64Encoding(): bool |
| 497 | { |
| 498 | return ($this->encoding == self::BASE64); |
| 499 | } |
| 500 | |
| 501 | /** |
| 502 | * Is encoding quoted-printable |
| 503 | * |
| 504 | * @return bool |
| 505 | */ |
| 506 | public function isQuotedEncoding(): bool |
| 507 | { |
| 508 | return ($this->encoding == self::QUOTED); |
| 509 | } |
| 510 | |
| 511 | /** |
| 512 | * Is encoding URL |
| 513 | * |
| 514 | * @return bool |
| 515 | */ |
| 516 | public function isUrlEncoding(): bool |
| 517 | { |
| 518 | return ($this->encoding == self::URL); |
| 519 | } |
| 520 | |
| 521 | /** |
| 522 | * Is encoding raw URL |
| 523 | * |
| 524 | * @return bool |
| 525 | */ |
| 526 | public function isRawUrlEncoding(): bool |
| 527 | { |
| 528 | return ($this->encoding == self::RAW_URL); |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * Set the split |
| 533 | * |
| 534 | * @param int|bool $split |
| 535 | * @return Body |
| 536 | */ |
| 537 | public function setSplit(int|bool $split): Body |
| 538 | { |
| 539 | $this->split = $split; |
| 540 | return $this; |
| 541 | } |
| 542 | |
| 543 | /** |
| 544 | * Get the split |
| 545 | * |
| 546 | * @return int|bool|null |
| 547 | */ |
| 548 | public function getSplit(): int|bool|null |
| 549 | { |
| 550 | return $this->split; |
| 551 | } |
| 552 | |
| 553 | /** |
| 554 | * Has split |
| 555 | * |
| 556 | * @return bool |
| 557 | */ |
| 558 | public function hasSplit(): bool |
| 559 | { |
| 560 | return ($this->split !== null); |
| 561 | } |
| 562 | |
| 563 | /** |
| 564 | * Set as encoded |
| 565 | * |
| 566 | * @param bool $isEncoded |
| 567 | * @return Body |
| 568 | */ |
| 569 | public function setAsEncoded(bool $isEncoded): Body |
| 570 | { |
| 571 | $this->isEncoded = $isEncoded; |
| 572 | return $this; |
| 573 | } |
| 574 | |
| 575 | /** |
| 576 | * Is encoded |
| 577 | * |
| 578 | * @return bool |
| 579 | */ |
| 580 | public function isEncoded(): bool |
| 581 | { |
| 582 | return $this->isEncoded; |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * Set as file |
| 587 | * |
| 588 | * @param bool $isFile |
| 589 | * @return Body |
| 590 | */ |
| 591 | public function setAsFile(bool $isFile): Body |
| 592 | { |
| 593 | $this->isFile = $isFile; |
| 594 | return $this; |
| 595 | } |
| 596 | |
| 597 | /** |
| 598 | * Is file |
| 599 | * |
| 600 | * @return bool |
| 601 | */ |
| 602 | public function isFile(): bool |
| 603 | { |
| 604 | return $this->isFile; |
| 605 | } |
| 606 | |
| 607 | /** |
| 608 | * Render the body |
| 609 | * |
| 610 | * @return string |
| 611 | */ |
| 612 | public function render(): string |
| 613 | { |
| 614 | $content = $this->getContent(); |
| 615 | |
| 616 | if (!$this->isEncoded) { |
| 617 | switch ($this->encoding) { |
| 618 | case self::BASE64: |
| 619 | $content = base64_encode($content); |
| 620 | break; |
| 621 | case self::QUOTED: |
| 622 | $content = quoted_printable_encode($content); |
| 623 | break; |
| 624 | case self::URL: |
| 625 | $content = urlencode($content); |
| 626 | break; |
| 627 | case self::RAW_URL: |
| 628 | $content = rawurlencode($content); |
| 629 | break; |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | if ($this->split !== null) { |
| 634 | $content = ($this->split === true) ? chunk_split($content) : chunk_split($content, (int)$this->split); |
| 635 | } |
| 636 | |
| 637 | return (string)$content; |
| 638 | } |
| 639 | |
| 640 | /** |
| 641 | * Render the body |
| 642 | * |
| 643 | * @return string |
| 644 | */ |
| 645 | public function __toString(): string |
| 646 | { |
| 647 | return $this->render(); |
| 648 | } |
| 649 | |
| 650 | } |