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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Html\Tokenizer; |
| 6 | |
| 7 | /** |
| 8 | * WHATWG HTML §13.2.5 tokenizer. |
| 9 | * |
| 10 | * Phase 1B.2 + 1B.2-bis: all ~80 spec states implemented. Covers DOCTYPE |
| 11 | * (including PUBLIC/SYSTEM identifiers), tags with every attribute form, |
| 12 | * script-data with full escape/double-escape recovery, comments (including |
| 13 | * nested-comment recovery), CDATA sections (entered when {@see self::$inForeignContent} |
| 14 | * is true), and character references (numeric + named). |
| 15 | * |
| 16 | * Named character reference table (see {@see NamedCharacterReferences}) ships |
| 17 | * the high-frequency subset of the spec's ~2200 entries. Generation of the |
| 18 | * full table from the spec's `entities.json` is a separate deliverable |
| 19 | * tracked in the rendering roadmap. |
| 20 | * |
| 21 | * Input preprocessing per WHATWG §13.2.3.5: CR/CRLF normalised to LF before |
| 22 | * tokenizing. NULL handling is per-state (some emit U+FFFD, some emit raw, |
| 23 | * all with parse-error tracking). |
| 24 | */ |
| 25 | final class Tokenizer |
| 26 | { |
| 27 | public TokenizerState $state = TokenizerState::Data; |
| 28 | public ?string $lastStartTagName = null; // for appropriate-end-tag check in RCDATA/RAWTEXT |
| 29 | |
| 30 | /** |
| 31 | * Set to true by tree construction when the "adjusted current node" is |
| 32 | * not in the HTML namespace (e.g. inside SVG or MathML). Affects the |
| 33 | * MarkupDeclarationOpen state's handling of `[CDATA[`: in foreign content |
| 34 | * we enter the CdataSection state; in HTML content it's a bogus comment. |
| 35 | */ |
| 36 | public bool $inForeignContent = false; |
| 37 | |
| 38 | /** @var list<string> input as an array of UTF-8 single-codepoint strings */ |
| 39 | private array $chars; |
| 40 | private int $length; |
| 41 | private int $pos = 0; |
| 42 | private bool $reconsume = false; |
| 43 | private string $currentChar = ''; |
| 44 | |
| 45 | private ?Token $currentToken = null; |
| 46 | private TokenizerState $returnState = TokenizerState::Data; |
| 47 | private string $tempBuffer = ''; |
| 48 | private int $characterReferenceCode = 0; |
| 49 | |
| 50 | /** @var list<Token> */ |
| 51 | private array $emitted = []; |
| 52 | private int $emittedCursor = 0; |
| 53 | /** @var list<ParseError> */ |
| 54 | private array $errors = []; |
| 55 | private bool $done = false; |
| 56 | |
| 57 | public function __construct(string $input) |
| 58 | { |
| 59 | $normalised = $this->preprocess($input); |
| 60 | $this->chars = $normalised === '' ? [] : (mb_str_split($normalised, 1, 'UTF-8') ?: []); |
| 61 | $this->length = count($this->chars); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Run the state machine to completion and return all tokens emitted, in |
| 66 | * order, ending with an EofToken. Convenience for callers that don't need |
| 67 | * mid-stream state interaction; tree construction uses {@see self::nextToken()}. |
| 68 | * |
| 69 | * @return list<Token> |
| 70 | */ |
| 71 | public function tokenize(): array |
| 72 | { |
| 73 | while (!$this->done) { |
| 74 | $this->step(); |
| 75 | } |
| 76 | return $this->emitted; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Pull the next token, advancing the state machine until at least one |
| 81 | * token is emitted (or EOF). Tree construction drives this iteratively so |
| 82 | * it can mutate {@see self::$state} (e.g. switching to RCDATA when |
| 83 | * encountering `<title>`) between tokens. |
| 84 | */ |
| 85 | public function nextToken(): ?Token |
| 86 | { |
| 87 | while ($this->emittedCursor >= count($this->emitted) && !$this->done) { |
| 88 | $this->step(); |
| 89 | } |
| 90 | if ($this->emittedCursor < count($this->emitted)) { |
| 91 | return $this->emitted[$this->emittedCursor++]; |
| 92 | } |
| 93 | return null; |
| 94 | } |
| 95 | |
| 96 | /** @return list<ParseError> */ |
| 97 | public function errors(): array |
| 98 | { |
| 99 | return $this->errors; |
| 100 | } |
| 101 | |
| 102 | private function step(): void |
| 103 | { |
| 104 | match ($this->state) { |
| 105 | TokenizerState::Data => $this->stateData(), |
| 106 | TokenizerState::Rcdata => $this->stateRcdata(), |
| 107 | TokenizerState::Rawtext => $this->stateRawtext(), |
| 108 | TokenizerState::ScriptData => $this->stateScriptData(), |
| 109 | TokenizerState::Plaintext => $this->statePlaintext(), |
| 110 | TokenizerState::TagOpen => $this->stateTagOpen(), |
| 111 | TokenizerState::EndTagOpen => $this->stateEndTagOpen(), |
| 112 | TokenizerState::TagName => $this->stateTagName(), |
| 113 | TokenizerState::RcdataLessThanSign => $this->stateRcdataLessThanSign(), |
| 114 | TokenizerState::RcdataEndTagOpen => $this->stateRcdataEndTagOpen(), |
| 115 | TokenizerState::RcdataEndTagName => $this->stateRcdataEndTagName(), |
| 116 | TokenizerState::RawtextLessThanSign => $this->stateRawtextLessThanSign(), |
| 117 | TokenizerState::RawtextEndTagOpen => $this->stateRawtextEndTagOpen(), |
| 118 | TokenizerState::RawtextEndTagName => $this->stateRawtextEndTagName(), |
| 119 | TokenizerState::ScriptDataLessThanSign => $this->stateScriptDataLessThanSign(), |
| 120 | TokenizerState::ScriptDataEndTagOpen => $this->stateScriptDataEndTagOpen(), |
| 121 | TokenizerState::ScriptDataEndTagName => $this->stateScriptDataEndTagName(), |
| 122 | TokenizerState::ScriptDataEscapeStart => $this->stateScriptDataEscapeStart(), |
| 123 | TokenizerState::ScriptDataEscapeStartDash => $this->stateScriptDataEscapeStartDash(), |
| 124 | TokenizerState::ScriptDataEscaped => $this->stateScriptDataEscaped(), |
| 125 | TokenizerState::ScriptDataEscapedDash => $this->stateScriptDataEscapedDash(), |
| 126 | TokenizerState::ScriptDataEscapedDashDash => $this->stateScriptDataEscapedDashDash(), |
| 127 | TokenizerState::ScriptDataEscapedLessThanSign => $this->stateScriptDataEscapedLessThanSign(), |
| 128 | TokenizerState::ScriptDataEscapedEndTagOpen => $this->stateScriptDataEscapedEndTagOpen(), |
| 129 | TokenizerState::ScriptDataEscapedEndTagName => $this->stateScriptDataEscapedEndTagName(), |
| 130 | TokenizerState::ScriptDataDoubleEscapeStart => $this->stateScriptDataDoubleEscapeStart(), |
| 131 | TokenizerState::ScriptDataDoubleEscaped => $this->stateScriptDataDoubleEscaped(), |
| 132 | TokenizerState::ScriptDataDoubleEscapedDash => $this->stateScriptDataDoubleEscapedDash(), |
| 133 | TokenizerState::ScriptDataDoubleEscapedDashDash => $this->stateScriptDataDoubleEscapedDashDash(), |
| 134 | TokenizerState::ScriptDataDoubleEscapedLessThanSign => $this->stateScriptDataDoubleEscapedLessThanSign(), |
| 135 | TokenizerState::ScriptDataDoubleEscapeEnd => $this->stateScriptDataDoubleEscapeEnd(), |
| 136 | TokenizerState::BeforeAttributeName => $this->stateBeforeAttributeName(), |
| 137 | TokenizerState::AttributeName => $this->stateAttributeName(), |
| 138 | TokenizerState::AfterAttributeName => $this->stateAfterAttributeName(), |
| 139 | TokenizerState::BeforeAttributeValue => $this->stateBeforeAttributeValue(), |
| 140 | TokenizerState::AttributeValueDoubleQuoted => $this->stateAttributeValueDoubleQuoted(), |
| 141 | TokenizerState::AttributeValueSingleQuoted => $this->stateAttributeValueSingleQuoted(), |
| 142 | TokenizerState::AttributeValueUnquoted => $this->stateAttributeValueUnquoted(), |
| 143 | TokenizerState::AfterAttributeValueQuoted => $this->stateAfterAttributeValueQuoted(), |
| 144 | TokenizerState::SelfClosingStartTag => $this->stateSelfClosingStartTag(), |
| 145 | TokenizerState::BogusComment => $this->stateBogusComment(), |
| 146 | TokenizerState::MarkupDeclarationOpen => $this->stateMarkupDeclarationOpen(), |
| 147 | TokenizerState::CommentStart => $this->stateCommentStart(), |
| 148 | TokenizerState::CommentStartDash => $this->stateCommentStartDash(), |
| 149 | TokenizerState::Comment => $this->stateComment(), |
| 150 | TokenizerState::CommentLessThanSign => $this->stateCommentLessThanSign(), |
| 151 | TokenizerState::CommentLessThanSignBang => $this->stateCommentLessThanSignBang(), |
| 152 | TokenizerState::CommentLessThanSignBangDash => $this->stateCommentLessThanSignBangDash(), |
| 153 | TokenizerState::CommentLessThanSignBangDashDash => $this->stateCommentLessThanSignBangDashDash(), |
| 154 | TokenizerState::CommentEndDash => $this->stateCommentEndDash(), |
| 155 | TokenizerState::CommentEnd => $this->stateCommentEnd(), |
| 156 | TokenizerState::CommentEndBang => $this->stateCommentEndBang(), |
| 157 | TokenizerState::Doctype => $this->stateDoctype(), |
| 158 | TokenizerState::BeforeDoctypeName => $this->stateBeforeDoctypeName(), |
| 159 | TokenizerState::DoctypeName => $this->stateDoctypeName(), |
| 160 | TokenizerState::AfterDoctypeName => $this->stateAfterDoctypeName(), |
| 161 | TokenizerState::AfterDoctypePublicKeyword => $this->stateAfterDoctypePublicKeyword(), |
| 162 | TokenizerState::BeforeDoctypePublicIdentifier => $this->stateBeforeDoctypePublicIdentifier(), |
| 163 | TokenizerState::DoctypePublicIdentifierDoubleQuoted => $this->stateDoctypePublicIdentifierDoubleQuoted(), |
| 164 | TokenizerState::DoctypePublicIdentifierSingleQuoted => $this->stateDoctypePublicIdentifierSingleQuoted(), |
| 165 | TokenizerState::AfterDoctypePublicIdentifier => $this->stateAfterDoctypePublicIdentifier(), |
| 166 | TokenizerState::BetweenDoctypePublicAndSystemIdentifiers => $this->stateBetweenDoctypePublicAndSystemIdentifiers(), |
| 167 | TokenizerState::AfterDoctypeSystemKeyword => $this->stateAfterDoctypeSystemKeyword(), |
| 168 | TokenizerState::BeforeDoctypeSystemIdentifier => $this->stateBeforeDoctypeSystemIdentifier(), |
| 169 | TokenizerState::DoctypeSystemIdentifierDoubleQuoted => $this->stateDoctypeSystemIdentifierDoubleQuoted(), |
| 170 | TokenizerState::DoctypeSystemIdentifierSingleQuoted => $this->stateDoctypeSystemIdentifierSingleQuoted(), |
| 171 | TokenizerState::AfterDoctypeSystemIdentifier => $this->stateAfterDoctypeSystemIdentifier(), |
| 172 | TokenizerState::BogusDoctype => $this->stateBogusDoctype(), |
| 173 | TokenizerState::CdataSection => $this->stateCdataSection(), |
| 174 | TokenizerState::CdataSectionBracket => $this->stateCdataSectionBracket(), |
| 175 | TokenizerState::CdataSectionEnd => $this->stateCdataSectionEnd(), |
| 176 | TokenizerState::CharacterReference => $this->stateCharacterReference(), |
| 177 | TokenizerState::NamedCharacterReference => $this->stateNamedCharacterReference(), |
| 178 | TokenizerState::AmbiguousAmpersand => $this->stateAmbiguousAmpersand(), |
| 179 | TokenizerState::NumericCharacterReference => $this->stateNumericCharacterReference(), |
| 180 | TokenizerState::HexadecimalCharacterReferenceStart => $this->stateHexadecimalCharacterReferenceStart(), |
| 181 | TokenizerState::DecimalCharacterReferenceStart => $this->stateDecimalCharacterReferenceStart(), |
| 182 | TokenizerState::HexadecimalCharacterReference => $this->stateHexadecimalCharacterReference(), |
| 183 | TokenizerState::DecimalCharacterReference => $this->stateDecimalCharacterReference(), |
| 184 | TokenizerState::NumericCharacterReferenceEnd => $this->stateNumericCharacterReferenceEnd(), |
| 185 | }; |
| 186 | } |
| 187 | |
| 188 | // ============================================================ |
| 189 | // Input / output helpers |
| 190 | // ============================================================ |
| 191 | |
| 192 | private function preprocess(string $input): string |
| 193 | { |
| 194 | // WHATWG §13.2.3.5 — strip a single leading U+FEFF byte order |
| 195 | // mark (UTF-8 encoded as `\xEF\xBB\xBF`) before tokenising. |
| 196 | // Without this the BOM tokenises as a text node and the first |
| 197 | // following block child is pushed down by one line height. |
| 198 | if (str_starts_with($input, "\xEF\xBB\xBF")) { |
| 199 | $input = substr($input, 3); |
| 200 | } |
| 201 | // CRLF → LF, then CR → LF per WHATWG §13.2.3.5. |
| 202 | $input = str_replace("\r\n", "\n", $input); |
| 203 | $input = str_replace("\r", "\n", $input); |
| 204 | return $input; |
| 205 | } |
| 206 | |
| 207 | private function consume(): ?string |
| 208 | { |
| 209 | if ($this->reconsume) { |
| 210 | $this->reconsume = false; |
| 211 | return $this->currentChar === '' ? null : $this->currentChar; |
| 212 | } |
| 213 | if ($this->pos >= $this->length) { |
| 214 | $this->currentChar = ''; |
| 215 | return null; |
| 216 | } |
| 217 | $this->currentChar = $this->chars[$this->pos++]; |
| 218 | return $this->currentChar; |
| 219 | } |
| 220 | |
| 221 | private function reconsumeIn(TokenizerState $next): void |
| 222 | { |
| 223 | $this->state = $next; |
| 224 | $this->reconsume = true; |
| 225 | } |
| 226 | |
| 227 | private function peekRemaining(int $count): string |
| 228 | { |
| 229 | $start = $this->reconsume ? $this->pos - 1 : $this->pos; |
| 230 | if ($start >= $this->length) { |
| 231 | return ''; |
| 232 | } |
| 233 | return implode('', array_slice($this->chars, $start, $count)); |
| 234 | } |
| 235 | |
| 236 | private function advance(int $count): void |
| 237 | { |
| 238 | // When reconsume is set, `pos` sits one past the reconsume char, so |
| 239 | // the effective "start" for the advance is pos - 1. Compute from there |
| 240 | // to keep the next consume() pointed at the correct character. |
| 241 | $effectiveStart = $this->reconsume ? $this->pos - 1 : $this->pos; |
| 242 | $this->pos = $effectiveStart + $count; |
| 243 | $this->reconsume = false; |
| 244 | } |
| 245 | |
| 246 | private function emit(Token $t): void |
| 247 | { |
| 248 | if ($t instanceof StartTagToken) { |
| 249 | $this->lastStartTagName = $t->tagName; |
| 250 | } |
| 251 | $this->emitted[] = $t; |
| 252 | if ($t instanceof EofToken) { |
| 253 | $this->done = true; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | private function emitChar(string $data): void |
| 258 | { |
| 259 | $this->emit(new CharacterToken($data)); |
| 260 | } |
| 261 | |
| 262 | private function error(ParseErrorCode $code): void |
| 263 | { |
| 264 | $this->errors[] = new ParseError($code, $this->reconsume ? $this->pos - 1 : $this->pos); |
| 265 | } |
| 266 | |
| 267 | private function currentTokenAsEnd(): EndTagToken |
| 268 | { |
| 269 | assert($this->currentToken instanceof EndTagToken); |
| 270 | return $this->currentToken; |
| 271 | } |
| 272 | |
| 273 | private function currentTokenAsTag(): StartTagToken|EndTagToken |
| 274 | { |
| 275 | assert($this->currentToken instanceof StartTagToken || $this->currentToken instanceof EndTagToken); |
| 276 | return $this->currentToken; |
| 277 | } |
| 278 | |
| 279 | private function currentTokenAsComment(): CommentToken |
| 280 | { |
| 281 | assert($this->currentToken instanceof CommentToken); |
| 282 | return $this->currentToken; |
| 283 | } |
| 284 | |
| 285 | private function currentTokenAsDoctype(): DoctypeToken |
| 286 | { |
| 287 | assert($this->currentToken instanceof DoctypeToken); |
| 288 | return $this->currentToken; |
| 289 | } |
| 290 | |
| 291 | private function startNewAttribute(StartTagToken|EndTagToken $tag): void |
| 292 | { |
| 293 | $tag->attributes[] = ['name' => '', 'value' => '']; |
| 294 | $tag->currentAttribute = count($tag->attributes) - 1; |
| 295 | } |
| 296 | |
| 297 | private function appendToCurrentAttributeName(StartTagToken|EndTagToken $tag, string $chars): void |
| 298 | { |
| 299 | assert($tag->currentAttribute !== null); |
| 300 | $tag->attributes[$tag->currentAttribute]['name'] .= $chars; |
| 301 | } |
| 302 | |
| 303 | private function appendToCurrentAttributeValue(StartTagToken|EndTagToken $tag, string $chars): void |
| 304 | { |
| 305 | assert($tag->currentAttribute !== null); |
| 306 | $tag->attributes[$tag->currentAttribute]['value'] .= $chars; |
| 307 | } |
| 308 | |
| 309 | /** |
| 310 | * Per WHATWG: after a tag's attribute list is built, drop duplicate |
| 311 | * attribute names (keep the first; emit unexpected-character-in- |
| 312 | * attribute-name parse error for subsequent duplicates). Called when the |
| 313 | * tag token is finalised. |
| 314 | */ |
| 315 | private function dedupAttributes(StartTagToken|EndTagToken $tag): void |
| 316 | { |
| 317 | $seen = []; |
| 318 | $out = []; |
| 319 | foreach ($tag->attributes as $attr) { |
| 320 | if (isset($seen[$attr['name']])) { |
| 321 | $this->error(ParseErrorCode::UnexpectedCharacterInAttributeName); |
| 322 | continue; |
| 323 | } |
| 324 | $seen[$attr['name']] = true; |
| 325 | $out[] = $attr; |
| 326 | } |
| 327 | $tag->attributes = $out; |
| 328 | } |
| 329 | |
| 330 | private function isAppropriateEndTag(EndTagToken $tag): bool |
| 331 | { |
| 332 | return $this->lastStartTagName !== null && $tag->tagName === $this->lastStartTagName; |
| 333 | } |
| 334 | |
| 335 | // ============================================================ |
| 336 | // 13.2.5.1 Data state |
| 337 | // ============================================================ |
| 338 | private function stateData(): void |
| 339 | { |
| 340 | $c = $this->consume(); |
| 341 | if ($c === '&') { |
| 342 | $this->returnState = TokenizerState::Data; |
| 343 | $this->state = TokenizerState::CharacterReference; |
| 344 | return; |
| 345 | } |
| 346 | if ($c === '<') { |
| 347 | $this->state = TokenizerState::TagOpen; |
| 348 | return; |
| 349 | } |
| 350 | if ($c === null) { |
| 351 | $this->emit(new EofToken()); |
| 352 | return; |
| 353 | } |
| 354 | if ($c === "\u{0000}") { |
| 355 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 356 | } |
| 357 | $this->emitChar($c); |
| 358 | } |
| 359 | |
| 360 | // ============================================================ |
| 361 | // 13.2.5.2 RCDATA state |
| 362 | // ============================================================ |
| 363 | private function stateRcdata(): void |
| 364 | { |
| 365 | $c = $this->consume(); |
| 366 | if ($c === '&') { |
| 367 | $this->returnState = TokenizerState::Rcdata; |
| 368 | $this->state = TokenizerState::CharacterReference; |
| 369 | return; |
| 370 | } |
| 371 | if ($c === '<') { |
| 372 | $this->state = TokenizerState::RcdataLessThanSign; |
| 373 | return; |
| 374 | } |
| 375 | if ($c === null) { |
| 376 | $this->emit(new EofToken()); |
| 377 | return; |
| 378 | } |
| 379 | if ($c === "\u{0000}") { |
| 380 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 381 | $this->emitChar("\u{FFFD}"); |
| 382 | return; |
| 383 | } |
| 384 | $this->emitChar($c); |
| 385 | } |
| 386 | |
| 387 | // ============================================================ |
| 388 | // 13.2.5.3 RAWTEXT state |
| 389 | // ============================================================ |
| 390 | private function stateRawtext(): void |
| 391 | { |
| 392 | $c = $this->consume(); |
| 393 | if ($c === '<') { |
| 394 | $this->state = TokenizerState::RawtextLessThanSign; |
| 395 | return; |
| 396 | } |
| 397 | if ($c === null) { |
| 398 | $this->emit(new EofToken()); |
| 399 | return; |
| 400 | } |
| 401 | if ($c === "\u{0000}") { |
| 402 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 403 | $this->emitChar("\u{FFFD}"); |
| 404 | return; |
| 405 | } |
| 406 | $this->emitChar($c); |
| 407 | } |
| 408 | |
| 409 | // ============================================================ |
| 410 | // 13.2.5.4 Script data state |
| 411 | // ============================================================ |
| 412 | private function stateScriptData(): void |
| 413 | { |
| 414 | $c = $this->consume(); |
| 415 | if ($c === '<') { |
| 416 | $this->state = TokenizerState::ScriptDataLessThanSign; |
| 417 | return; |
| 418 | } |
| 419 | if ($c === null) { |
| 420 | $this->emit(new EofToken()); |
| 421 | return; |
| 422 | } |
| 423 | if ($c === "\u{0000}") { |
| 424 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 425 | $this->emitChar("\u{FFFD}"); |
| 426 | return; |
| 427 | } |
| 428 | $this->emitChar($c); |
| 429 | } |
| 430 | |
| 431 | // ============================================================ |
| 432 | // 13.2.5.15–17 Script data less-than / end-tag states |
| 433 | // ============================================================ |
| 434 | private function stateScriptDataLessThanSign(): void |
| 435 | { |
| 436 | $c = $this->consume(); |
| 437 | if ($c === '/') { |
| 438 | $this->tempBuffer = ''; |
| 439 | $this->state = TokenizerState::ScriptDataEndTagOpen; |
| 440 | return; |
| 441 | } |
| 442 | if ($c === '!') { |
| 443 | $this->state = TokenizerState::ScriptDataEscapeStart; |
| 444 | $this->emitChar('<'); |
| 445 | $this->emitChar('!'); |
| 446 | return; |
| 447 | } |
| 448 | $this->emitChar('<'); |
| 449 | $this->reconsumeIn(TokenizerState::ScriptData); |
| 450 | } |
| 451 | |
| 452 | private function stateScriptDataEndTagOpen(): void |
| 453 | { |
| 454 | $c = $this->consume(); |
| 455 | if ($c !== null && self::isAsciiAlpha($c)) { |
| 456 | $this->currentToken = new EndTagToken(); |
| 457 | $this->reconsumeIn(TokenizerState::ScriptDataEndTagName); |
| 458 | return; |
| 459 | } |
| 460 | $this->emitChar('<'); |
| 461 | $this->emitChar('/'); |
| 462 | $this->reconsumeIn(TokenizerState::ScriptData); |
| 463 | } |
| 464 | |
| 465 | private function stateScriptDataEndTagName(): void |
| 466 | { |
| 467 | $this->endTagNameAlternativeReturn(TokenizerState::ScriptData); |
| 468 | } |
| 469 | |
| 470 | // ============================================================ |
| 471 | // 13.2.5.18–19 Script data escape start states |
| 472 | // ============================================================ |
| 473 | private function stateScriptDataEscapeStart(): void |
| 474 | { |
| 475 | $c = $this->consume(); |
| 476 | if ($c === '-') { |
| 477 | $this->state = TokenizerState::ScriptDataEscapeStartDash; |
| 478 | $this->emitChar('-'); |
| 479 | return; |
| 480 | } |
| 481 | $this->reconsumeIn(TokenizerState::ScriptData); |
| 482 | } |
| 483 | |
| 484 | private function stateScriptDataEscapeStartDash(): void |
| 485 | { |
| 486 | $c = $this->consume(); |
| 487 | if ($c === '-') { |
| 488 | $this->state = TokenizerState::ScriptDataEscapedDashDash; |
| 489 | $this->emitChar('-'); |
| 490 | return; |
| 491 | } |
| 492 | $this->reconsumeIn(TokenizerState::ScriptData); |
| 493 | } |
| 494 | |
| 495 | // ============================================================ |
| 496 | // 13.2.5.20–22 Script data escaped states |
| 497 | // ============================================================ |
| 498 | private function stateScriptDataEscaped(): void |
| 499 | { |
| 500 | $c = $this->consume(); |
| 501 | if ($c === '-') { |
| 502 | $this->state = TokenizerState::ScriptDataEscapedDash; |
| 503 | $this->emitChar('-'); |
| 504 | return; |
| 505 | } |
| 506 | if ($c === '<') { |
| 507 | $this->state = TokenizerState::ScriptDataEscapedLessThanSign; |
| 508 | return; |
| 509 | } |
| 510 | if ($c === "\u{0000}") { |
| 511 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 512 | $this->emitChar("\u{FFFD}"); |
| 513 | return; |
| 514 | } |
| 515 | if ($c === null) { |
| 516 | $this->error(ParseErrorCode::EofInScriptHtmlCommentLikeText); |
| 517 | $this->emit(new EofToken()); |
| 518 | return; |
| 519 | } |
| 520 | $this->emitChar($c); |
| 521 | } |
| 522 | |
| 523 | private function stateScriptDataEscapedDash(): void |
| 524 | { |
| 525 | $c = $this->consume(); |
| 526 | if ($c === '-') { |
| 527 | $this->state = TokenizerState::ScriptDataEscapedDashDash; |
| 528 | $this->emitChar('-'); |
| 529 | return; |
| 530 | } |
| 531 | if ($c === '<') { |
| 532 | $this->state = TokenizerState::ScriptDataEscapedLessThanSign; |
| 533 | return; |
| 534 | } |
| 535 | if ($c === "\u{0000}") { |
| 536 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 537 | $this->state = TokenizerState::ScriptDataEscaped; |
| 538 | $this->emitChar("\u{FFFD}"); |
| 539 | return; |
| 540 | } |
| 541 | if ($c === null) { |
| 542 | $this->error(ParseErrorCode::EofInScriptHtmlCommentLikeText); |
| 543 | $this->emit(new EofToken()); |
| 544 | return; |
| 545 | } |
| 546 | $this->state = TokenizerState::ScriptDataEscaped; |
| 547 | $this->emitChar($c); |
| 548 | } |
| 549 | |
| 550 | private function stateScriptDataEscapedDashDash(): void |
| 551 | { |
| 552 | $c = $this->consume(); |
| 553 | if ($c === '-') { |
| 554 | $this->emitChar('-'); |
| 555 | return; |
| 556 | } |
| 557 | if ($c === '<') { |
| 558 | $this->state = TokenizerState::ScriptDataEscapedLessThanSign; |
| 559 | return; |
| 560 | } |
| 561 | if ($c === '>') { |
| 562 | $this->state = TokenizerState::ScriptData; |
| 563 | $this->emitChar('>'); |
| 564 | return; |
| 565 | } |
| 566 | if ($c === "\u{0000}") { |
| 567 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 568 | $this->state = TokenizerState::ScriptDataEscaped; |
| 569 | $this->emitChar("\u{FFFD}"); |
| 570 | return; |
| 571 | } |
| 572 | if ($c === null) { |
| 573 | $this->error(ParseErrorCode::EofInScriptHtmlCommentLikeText); |
| 574 | $this->emit(new EofToken()); |
| 575 | return; |
| 576 | } |
| 577 | $this->state = TokenizerState::ScriptDataEscaped; |
| 578 | $this->emitChar($c); |
| 579 | } |
| 580 | |
| 581 | // ============================================================ |
| 582 | // 13.2.5.23–25 Script data escaped less-than / end-tag states |
| 583 | // ============================================================ |
| 584 | private function stateScriptDataEscapedLessThanSign(): void |
| 585 | { |
| 586 | $c = $this->consume(); |
| 587 | if ($c === '/') { |
| 588 | $this->tempBuffer = ''; |
| 589 | $this->state = TokenizerState::ScriptDataEscapedEndTagOpen; |
| 590 | return; |
| 591 | } |
| 592 | if ($c !== null && self::isAsciiAlpha($c)) { |
| 593 | $this->tempBuffer = ''; |
| 594 | $this->emitChar('<'); |
| 595 | $this->reconsumeIn(TokenizerState::ScriptDataDoubleEscapeStart); |
| 596 | return; |
| 597 | } |
| 598 | $this->emitChar('<'); |
| 599 | $this->reconsumeIn(TokenizerState::ScriptDataEscaped); |
| 600 | } |
| 601 | |
| 602 | private function stateScriptDataEscapedEndTagOpen(): void |
| 603 | { |
| 604 | $c = $this->consume(); |
| 605 | if ($c !== null && self::isAsciiAlpha($c)) { |
| 606 | $this->currentToken = new EndTagToken(); |
| 607 | $this->reconsumeIn(TokenizerState::ScriptDataEscapedEndTagName); |
| 608 | return; |
| 609 | } |
| 610 | $this->emitChar('<'); |
| 611 | $this->emitChar('/'); |
| 612 | $this->reconsumeIn(TokenizerState::ScriptDataEscaped); |
| 613 | } |
| 614 | |
| 615 | private function stateScriptDataEscapedEndTagName(): void |
| 616 | { |
| 617 | $this->endTagNameAlternativeReturn(TokenizerState::ScriptDataEscaped); |
| 618 | } |
| 619 | |
| 620 | // ============================================================ |
| 621 | // 13.2.5.26–31 Script data double escape states |
| 622 | // ============================================================ |
| 623 | private function stateScriptDataDoubleEscapeStart(): void |
| 624 | { |
| 625 | $c = $this->consume(); |
| 626 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ' || $c === '/' || $c === '>') { |
| 627 | $this->state = $this->tempBuffer === 'script' |
| 628 | ? TokenizerState::ScriptDataDoubleEscaped |
| 629 | : TokenizerState::ScriptDataEscaped; |
| 630 | $this->emitChar($c); |
| 631 | return; |
| 632 | } |
| 633 | if ($c !== null && self::isAsciiUpperAlpha($c)) { |
| 634 | $this->tempBuffer .= strtolower($c); |
| 635 | $this->emitChar($c); |
| 636 | return; |
| 637 | } |
| 638 | if ($c !== null && self::isAsciiLowerAlpha($c)) { |
| 639 | $this->tempBuffer .= $c; |
| 640 | $this->emitChar($c); |
| 641 | return; |
| 642 | } |
| 643 | $this->reconsumeIn(TokenizerState::ScriptDataEscaped); |
| 644 | } |
| 645 | |
| 646 | private function stateScriptDataDoubleEscaped(): void |
| 647 | { |
| 648 | $c = $this->consume(); |
| 649 | if ($c === '-') { |
| 650 | $this->state = TokenizerState::ScriptDataDoubleEscapedDash; |
| 651 | $this->emitChar('-'); |
| 652 | return; |
| 653 | } |
| 654 | if ($c === '<') { |
| 655 | $this->state = TokenizerState::ScriptDataDoubleEscapedLessThanSign; |
| 656 | $this->emitChar('<'); |
| 657 | return; |
| 658 | } |
| 659 | if ($c === "\u{0000}") { |
| 660 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 661 | $this->emitChar("\u{FFFD}"); |
| 662 | return; |
| 663 | } |
| 664 | if ($c === null) { |
| 665 | $this->error(ParseErrorCode::EofInScriptHtmlCommentLikeText); |
| 666 | $this->emit(new EofToken()); |
| 667 | return; |
| 668 | } |
| 669 | $this->emitChar($c); |
| 670 | } |
| 671 | |
| 672 | private function stateScriptDataDoubleEscapedDash(): void |
| 673 | { |
| 674 | $c = $this->consume(); |
| 675 | if ($c === '-') { |
| 676 | $this->state = TokenizerState::ScriptDataDoubleEscapedDashDash; |
| 677 | $this->emitChar('-'); |
| 678 | return; |
| 679 | } |
| 680 | if ($c === '<') { |
| 681 | $this->state = TokenizerState::ScriptDataDoubleEscapedLessThanSign; |
| 682 | $this->emitChar('<'); |
| 683 | return; |
| 684 | } |
| 685 | if ($c === "\u{0000}") { |
| 686 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 687 | $this->state = TokenizerState::ScriptDataDoubleEscaped; |
| 688 | $this->emitChar("\u{FFFD}"); |
| 689 | return; |
| 690 | } |
| 691 | if ($c === null) { |
| 692 | $this->error(ParseErrorCode::EofInScriptHtmlCommentLikeText); |
| 693 | $this->emit(new EofToken()); |
| 694 | return; |
| 695 | } |
| 696 | $this->state = TokenizerState::ScriptDataDoubleEscaped; |
| 697 | $this->emitChar($c); |
| 698 | } |
| 699 | |
| 700 | private function stateScriptDataDoubleEscapedDashDash(): void |
| 701 | { |
| 702 | $c = $this->consume(); |
| 703 | if ($c === '-') { |
| 704 | $this->emitChar('-'); |
| 705 | return; |
| 706 | } |
| 707 | if ($c === '<') { |
| 708 | $this->state = TokenizerState::ScriptDataDoubleEscapedLessThanSign; |
| 709 | $this->emitChar('<'); |
| 710 | return; |
| 711 | } |
| 712 | if ($c === '>') { |
| 713 | $this->state = TokenizerState::ScriptData; |
| 714 | $this->emitChar('>'); |
| 715 | return; |
| 716 | } |
| 717 | if ($c === "\u{0000}") { |
| 718 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 719 | $this->state = TokenizerState::ScriptDataDoubleEscaped; |
| 720 | $this->emitChar("\u{FFFD}"); |
| 721 | return; |
| 722 | } |
| 723 | if ($c === null) { |
| 724 | $this->error(ParseErrorCode::EofInScriptHtmlCommentLikeText); |
| 725 | $this->emit(new EofToken()); |
| 726 | return; |
| 727 | } |
| 728 | $this->state = TokenizerState::ScriptDataDoubleEscaped; |
| 729 | $this->emitChar($c); |
| 730 | } |
| 731 | |
| 732 | private function stateScriptDataDoubleEscapedLessThanSign(): void |
| 733 | { |
| 734 | $c = $this->consume(); |
| 735 | if ($c === '/') { |
| 736 | $this->tempBuffer = ''; |
| 737 | $this->state = TokenizerState::ScriptDataDoubleEscapeEnd; |
| 738 | $this->emitChar('/'); |
| 739 | return; |
| 740 | } |
| 741 | $this->reconsumeIn(TokenizerState::ScriptDataDoubleEscaped); |
| 742 | } |
| 743 | |
| 744 | private function stateScriptDataDoubleEscapeEnd(): void |
| 745 | { |
| 746 | $c = $this->consume(); |
| 747 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ' || $c === '/' || $c === '>') { |
| 748 | $this->state = $this->tempBuffer === 'script' |
| 749 | ? TokenizerState::ScriptDataEscaped |
| 750 | : TokenizerState::ScriptDataDoubleEscaped; |
| 751 | $this->emitChar($c); |
| 752 | return; |
| 753 | } |
| 754 | if ($c !== null && self::isAsciiUpperAlpha($c)) { |
| 755 | $this->tempBuffer .= strtolower($c); |
| 756 | $this->emitChar($c); |
| 757 | return; |
| 758 | } |
| 759 | if ($c !== null && self::isAsciiLowerAlpha($c)) { |
| 760 | $this->tempBuffer .= $c; |
| 761 | $this->emitChar($c); |
| 762 | return; |
| 763 | } |
| 764 | $this->reconsumeIn(TokenizerState::ScriptDataDoubleEscaped); |
| 765 | } |
| 766 | |
| 767 | // ============================================================ |
| 768 | // 13.2.5.5 PLAINTEXT state |
| 769 | // ============================================================ |
| 770 | private function statePlaintext(): void |
| 771 | { |
| 772 | $c = $this->consume(); |
| 773 | if ($c === null) { |
| 774 | $this->emit(new EofToken()); |
| 775 | return; |
| 776 | } |
| 777 | if ($c === "\u{0000}") { |
| 778 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 779 | $this->emitChar("\u{FFFD}"); |
| 780 | return; |
| 781 | } |
| 782 | $this->emitChar($c); |
| 783 | } |
| 784 | |
| 785 | // ============================================================ |
| 786 | // 13.2.5.6 Tag open state |
| 787 | // ============================================================ |
| 788 | private function stateTagOpen(): void |
| 789 | { |
| 790 | $c = $this->consume(); |
| 791 | if ($c === '!') { |
| 792 | $this->state = TokenizerState::MarkupDeclarationOpen; |
| 793 | return; |
| 794 | } |
| 795 | if ($c === '/') { |
| 796 | $this->state = TokenizerState::EndTagOpen; |
| 797 | return; |
| 798 | } |
| 799 | if ($c !== null && self::isAsciiAlpha($c)) { |
| 800 | $this->currentToken = new StartTagToken(); |
| 801 | $this->reconsumeIn(TokenizerState::TagName); |
| 802 | return; |
| 803 | } |
| 804 | if ($c === '?') { |
| 805 | $this->error(ParseErrorCode::UnexpectedQuestionMarkInsteadOfTagName); |
| 806 | $this->currentToken = new CommentToken(); |
| 807 | $this->reconsumeIn(TokenizerState::BogusComment); |
| 808 | return; |
| 809 | } |
| 810 | if ($c === null) { |
| 811 | $this->error(ParseErrorCode::EofBeforeTagName); |
| 812 | $this->emitChar('<'); |
| 813 | $this->emit(new EofToken()); |
| 814 | return; |
| 815 | } |
| 816 | $this->error(ParseErrorCode::InvalidFirstCharacterOfTagName); |
| 817 | $this->emitChar('<'); |
| 818 | $this->reconsumeIn(TokenizerState::Data); |
| 819 | } |
| 820 | |
| 821 | // ============================================================ |
| 822 | // 13.2.5.7 End tag open state |
| 823 | // ============================================================ |
| 824 | private function stateEndTagOpen(): void |
| 825 | { |
| 826 | $c = $this->consume(); |
| 827 | if ($c !== null && self::isAsciiAlpha($c)) { |
| 828 | $this->currentToken = new EndTagToken(); |
| 829 | $this->reconsumeIn(TokenizerState::TagName); |
| 830 | return; |
| 831 | } |
| 832 | if ($c === '>') { |
| 833 | $this->error(ParseErrorCode::MissingEndTagName); |
| 834 | $this->state = TokenizerState::Data; |
| 835 | return; |
| 836 | } |
| 837 | if ($c === null) { |
| 838 | $this->error(ParseErrorCode::EofBeforeTagName); |
| 839 | $this->emitChar('<'); |
| 840 | $this->emitChar('/'); |
| 841 | $this->emit(new EofToken()); |
| 842 | return; |
| 843 | } |
| 844 | $this->error(ParseErrorCode::InvalidFirstCharacterOfTagName); |
| 845 | $this->currentToken = new CommentToken(); |
| 846 | $this->reconsumeIn(TokenizerState::BogusComment); |
| 847 | } |
| 848 | |
| 849 | // ============================================================ |
| 850 | // 13.2.5.8 Tag name state |
| 851 | // ============================================================ |
| 852 | private function stateTagName(): void |
| 853 | { |
| 854 | $c = $this->consume(); |
| 855 | $tag = $this->currentTokenAsTag(); |
| 856 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 857 | $this->state = TokenizerState::BeforeAttributeName; |
| 858 | return; |
| 859 | } |
| 860 | if ($c === '/') { |
| 861 | $this->state = TokenizerState::SelfClosingStartTag; |
| 862 | return; |
| 863 | } |
| 864 | if ($c === '>') { |
| 865 | $this->finalizeAndEmitTag(); |
| 866 | $this->state = TokenizerState::Data; |
| 867 | return; |
| 868 | } |
| 869 | if ($c !== null && self::isAsciiUpperAlpha($c)) { |
| 870 | $tag->tagName .= strtolower($c); |
| 871 | return; |
| 872 | } |
| 873 | if ($c === "\u{0000}") { |
| 874 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 875 | $tag->tagName .= "\u{FFFD}"; |
| 876 | return; |
| 877 | } |
| 878 | if ($c === null) { |
| 879 | $this->error(ParseErrorCode::EofInTag); |
| 880 | $this->emit(new EofToken()); |
| 881 | return; |
| 882 | } |
| 883 | $tag->tagName .= $c; |
| 884 | } |
| 885 | |
| 886 | // ============================================================ |
| 887 | // 13.2.5.9–11 RCDATA less-than and end-tag states |
| 888 | // ============================================================ |
| 889 | private function stateRcdataLessThanSign(): void |
| 890 | { |
| 891 | $c = $this->consume(); |
| 892 | if ($c === '/') { |
| 893 | $this->tempBuffer = ''; |
| 894 | $this->state = TokenizerState::RcdataEndTagOpen; |
| 895 | return; |
| 896 | } |
| 897 | $this->emitChar('<'); |
| 898 | $this->reconsumeIn(TokenizerState::Rcdata); |
| 899 | } |
| 900 | |
| 901 | private function stateRcdataEndTagOpen(): void |
| 902 | { |
| 903 | $c = $this->consume(); |
| 904 | if ($c !== null && self::isAsciiAlpha($c)) { |
| 905 | $this->currentToken = new EndTagToken(); |
| 906 | $this->reconsumeIn(TokenizerState::RcdataEndTagName); |
| 907 | return; |
| 908 | } |
| 909 | $this->emitChar('<'); |
| 910 | $this->emitChar('/'); |
| 911 | $this->reconsumeIn(TokenizerState::Rcdata); |
| 912 | } |
| 913 | |
| 914 | private function stateRcdataEndTagName(): void |
| 915 | { |
| 916 | $this->endTagNameAlternativeReturn(TokenizerState::Rcdata); |
| 917 | } |
| 918 | |
| 919 | // ============================================================ |
| 920 | // 13.2.5.12–14 RAWTEXT less-than and end-tag states |
| 921 | // ============================================================ |
| 922 | private function stateRawtextLessThanSign(): void |
| 923 | { |
| 924 | $c = $this->consume(); |
| 925 | if ($c === '/') { |
| 926 | $this->tempBuffer = ''; |
| 927 | $this->state = TokenizerState::RawtextEndTagOpen; |
| 928 | return; |
| 929 | } |
| 930 | $this->emitChar('<'); |
| 931 | $this->reconsumeIn(TokenizerState::Rawtext); |
| 932 | } |
| 933 | |
| 934 | private function stateRawtextEndTagOpen(): void |
| 935 | { |
| 936 | $c = $this->consume(); |
| 937 | if ($c !== null && self::isAsciiAlpha($c)) { |
| 938 | $this->currentToken = new EndTagToken(); |
| 939 | $this->reconsumeIn(TokenizerState::RawtextEndTagName); |
| 940 | return; |
| 941 | } |
| 942 | $this->emitChar('<'); |
| 943 | $this->emitChar('/'); |
| 944 | $this->reconsumeIn(TokenizerState::Rawtext); |
| 945 | } |
| 946 | |
| 947 | private function stateRawtextEndTagName(): void |
| 948 | { |
| 949 | $this->endTagNameAlternativeReturn(TokenizerState::Rawtext); |
| 950 | } |
| 951 | |
| 952 | /** |
| 953 | * Shared logic for RCDATA / RAWTEXT / Script end-tag-name states. If the |
| 954 | * end tag matches the most recent start tag (the "appropriate end tag"), |
| 955 | * transition like a normal tag close; otherwise emit characters and |
| 956 | * return to the source state. |
| 957 | */ |
| 958 | private function endTagNameAlternativeReturn(TokenizerState $sourceState): void |
| 959 | { |
| 960 | $c = $this->consume(); |
| 961 | $tag = $this->currentTokenAsEnd(); |
| 962 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 963 | if ($this->isAppropriateEndTag($tag)) { |
| 964 | $this->state = TokenizerState::BeforeAttributeName; |
| 965 | return; |
| 966 | } |
| 967 | $this->emitFakeOpeningChars($sourceState); |
| 968 | return; |
| 969 | } |
| 970 | if ($c === '/') { |
| 971 | if ($this->isAppropriateEndTag($tag)) { |
| 972 | $this->state = TokenizerState::SelfClosingStartTag; |
| 973 | return; |
| 974 | } |
| 975 | $this->emitFakeOpeningChars($sourceState); |
| 976 | return; |
| 977 | } |
| 978 | if ($c === '>') { |
| 979 | if ($this->isAppropriateEndTag($tag)) { |
| 980 | $this->finalizeAndEmitTag(); |
| 981 | $this->state = TokenizerState::Data; |
| 982 | return; |
| 983 | } |
| 984 | $this->emitFakeOpeningChars($sourceState); |
| 985 | return; |
| 986 | } |
| 987 | if ($c !== null && self::isAsciiUpperAlpha($c)) { |
| 988 | $tag->tagName .= strtolower($c); |
| 989 | $this->tempBuffer .= $c; |
| 990 | return; |
| 991 | } |
| 992 | if ($c !== null && self::isAsciiLowerAlpha($c)) { |
| 993 | $tag->tagName .= $c; |
| 994 | $this->tempBuffer .= $c; |
| 995 | return; |
| 996 | } |
| 997 | $this->emitFakeOpeningChars($sourceState); |
| 998 | } |
| 999 | |
| 1000 | private function emitFakeOpeningChars(TokenizerState $sourceState): void |
| 1001 | { |
| 1002 | $this->emitChar('<'); |
| 1003 | $this->emitChar('/'); |
| 1004 | if ($this->tempBuffer !== '') { |
| 1005 | $this->emitChar($this->tempBuffer); |
| 1006 | } |
| 1007 | $this->reconsumeIn($sourceState); |
| 1008 | } |
| 1009 | |
| 1010 | // ============================================================ |
| 1011 | // 13.2.5.32 Before attribute name state |
| 1012 | // ============================================================ |
| 1013 | private function stateBeforeAttributeName(): void |
| 1014 | { |
| 1015 | $c = $this->consume(); |
| 1016 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1017 | return; |
| 1018 | } |
| 1019 | if ($c === '/' || $c === '>' || $c === null) { |
| 1020 | $this->reconsumeIn(TokenizerState::AfterAttributeName); |
| 1021 | return; |
| 1022 | } |
| 1023 | if ($c === '=') { |
| 1024 | $this->error(ParseErrorCode::UnexpectedEqualsSignBeforeAttributeName); |
| 1025 | $tag = $this->currentTokenAsTag(); |
| 1026 | $this->startNewAttribute($tag); |
| 1027 | $this->appendToCurrentAttributeName($tag, '='); |
| 1028 | $this->state = TokenizerState::AttributeName; |
| 1029 | return; |
| 1030 | } |
| 1031 | $tag = $this->currentTokenAsTag(); |
| 1032 | $this->startNewAttribute($tag); |
| 1033 | $this->reconsumeIn(TokenizerState::AttributeName); |
| 1034 | } |
| 1035 | |
| 1036 | // ============================================================ |
| 1037 | // 13.2.5.33 Attribute name state |
| 1038 | // ============================================================ |
| 1039 | private function stateAttributeName(): void |
| 1040 | { |
| 1041 | $c = $this->consume(); |
| 1042 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ' |
| 1043 | || $c === '/' || $c === '>' || $c === null |
| 1044 | ) { |
| 1045 | $this->reconsumeIn(TokenizerState::AfterAttributeName); |
| 1046 | return; |
| 1047 | } |
| 1048 | if ($c === '=') { |
| 1049 | $this->state = TokenizerState::BeforeAttributeValue; |
| 1050 | return; |
| 1051 | } |
| 1052 | $tag = $this->currentTokenAsTag(); |
| 1053 | if (self::isAsciiUpperAlpha($c)) { |
| 1054 | $this->appendToCurrentAttributeName($tag, strtolower($c)); |
| 1055 | return; |
| 1056 | } |
| 1057 | if ($c === "\u{0000}") { |
| 1058 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 1059 | $this->appendToCurrentAttributeName($tag, "\u{FFFD}"); |
| 1060 | return; |
| 1061 | } |
| 1062 | if ($c === '"' || $c === "'" || $c === '<') { |
| 1063 | $this->error(ParseErrorCode::UnexpectedCharacterInAttributeName); |
| 1064 | } |
| 1065 | $this->appendToCurrentAttributeName($tag, $c); |
| 1066 | } |
| 1067 | |
| 1068 | // ============================================================ |
| 1069 | // 13.2.5.34 After attribute name state |
| 1070 | // ============================================================ |
| 1071 | private function stateAfterAttributeName(): void |
| 1072 | { |
| 1073 | $c = $this->consume(); |
| 1074 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1075 | return; |
| 1076 | } |
| 1077 | if ($c === '/') { |
| 1078 | $this->state = TokenizerState::SelfClosingStartTag; |
| 1079 | return; |
| 1080 | } |
| 1081 | if ($c === '=') { |
| 1082 | $this->state = TokenizerState::BeforeAttributeValue; |
| 1083 | return; |
| 1084 | } |
| 1085 | if ($c === '>') { |
| 1086 | $this->finalizeAndEmitTag(); |
| 1087 | $this->state = TokenizerState::Data; |
| 1088 | return; |
| 1089 | } |
| 1090 | if ($c === null) { |
| 1091 | $this->error(ParseErrorCode::EofInTag); |
| 1092 | $this->emit(new EofToken()); |
| 1093 | return; |
| 1094 | } |
| 1095 | $tag = $this->currentTokenAsTag(); |
| 1096 | $this->startNewAttribute($tag); |
| 1097 | $this->reconsumeIn(TokenizerState::AttributeName); |
| 1098 | } |
| 1099 | |
| 1100 | // ============================================================ |
| 1101 | // 13.2.5.35 Before attribute value state |
| 1102 | // ============================================================ |
| 1103 | private function stateBeforeAttributeValue(): void |
| 1104 | { |
| 1105 | $c = $this->consume(); |
| 1106 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1107 | return; |
| 1108 | } |
| 1109 | if ($c === '"') { |
| 1110 | $this->state = TokenizerState::AttributeValueDoubleQuoted; |
| 1111 | return; |
| 1112 | } |
| 1113 | if ($c === "'") { |
| 1114 | $this->state = TokenizerState::AttributeValueSingleQuoted; |
| 1115 | return; |
| 1116 | } |
| 1117 | if ($c === '>') { |
| 1118 | $this->error(ParseErrorCode::MissingAttributeValue); |
| 1119 | $this->finalizeAndEmitTag(); |
| 1120 | $this->state = TokenizerState::Data; |
| 1121 | return; |
| 1122 | } |
| 1123 | $this->reconsumeIn(TokenizerState::AttributeValueUnquoted); |
| 1124 | } |
| 1125 | |
| 1126 | // ============================================================ |
| 1127 | // 13.2.5.36 Attribute value (double-quoted) state |
| 1128 | // ============================================================ |
| 1129 | private function stateAttributeValueDoubleQuoted(): void |
| 1130 | { |
| 1131 | $c = $this->consume(); |
| 1132 | if ($c === '"') { |
| 1133 | $this->state = TokenizerState::AfterAttributeValueQuoted; |
| 1134 | return; |
| 1135 | } |
| 1136 | if ($c === '&') { |
| 1137 | $this->returnState = TokenizerState::AttributeValueDoubleQuoted; |
| 1138 | $this->state = TokenizerState::CharacterReference; |
| 1139 | return; |
| 1140 | } |
| 1141 | if ($c === "\u{0000}") { |
| 1142 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 1143 | $this->appendToCurrentAttributeValue($this->currentTokenAsTag(), "\u{FFFD}"); |
| 1144 | return; |
| 1145 | } |
| 1146 | if ($c === null) { |
| 1147 | $this->error(ParseErrorCode::EofInTag); |
| 1148 | $this->emit(new EofToken()); |
| 1149 | return; |
| 1150 | } |
| 1151 | $this->appendToCurrentAttributeValue($this->currentTokenAsTag(), $c); |
| 1152 | } |
| 1153 | |
| 1154 | // ============================================================ |
| 1155 | // 13.2.5.37 Attribute value (single-quoted) state |
| 1156 | // ============================================================ |
| 1157 | private function stateAttributeValueSingleQuoted(): void |
| 1158 | { |
| 1159 | $c = $this->consume(); |
| 1160 | if ($c === "'") { |
| 1161 | $this->state = TokenizerState::AfterAttributeValueQuoted; |
| 1162 | return; |
| 1163 | } |
| 1164 | if ($c === '&') { |
| 1165 | $this->returnState = TokenizerState::AttributeValueSingleQuoted; |
| 1166 | $this->state = TokenizerState::CharacterReference; |
| 1167 | return; |
| 1168 | } |
| 1169 | if ($c === "\u{0000}") { |
| 1170 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 1171 | $this->appendToCurrentAttributeValue($this->currentTokenAsTag(), "\u{FFFD}"); |
| 1172 | return; |
| 1173 | } |
| 1174 | if ($c === null) { |
| 1175 | $this->error(ParseErrorCode::EofInTag); |
| 1176 | $this->emit(new EofToken()); |
| 1177 | return; |
| 1178 | } |
| 1179 | $this->appendToCurrentAttributeValue($this->currentTokenAsTag(), $c); |
| 1180 | } |
| 1181 | |
| 1182 | // ============================================================ |
| 1183 | // 13.2.5.38 Attribute value (unquoted) state |
| 1184 | // ============================================================ |
| 1185 | private function stateAttributeValueUnquoted(): void |
| 1186 | { |
| 1187 | $c = $this->consume(); |
| 1188 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1189 | $this->state = TokenizerState::BeforeAttributeName; |
| 1190 | return; |
| 1191 | } |
| 1192 | if ($c === '&') { |
| 1193 | $this->returnState = TokenizerState::AttributeValueUnquoted; |
| 1194 | $this->state = TokenizerState::CharacterReference; |
| 1195 | return; |
| 1196 | } |
| 1197 | if ($c === '>') { |
| 1198 | $this->finalizeAndEmitTag(); |
| 1199 | $this->state = TokenizerState::Data; |
| 1200 | return; |
| 1201 | } |
| 1202 | if ($c === "\u{0000}") { |
| 1203 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 1204 | $this->appendToCurrentAttributeValue($this->currentTokenAsTag(), "\u{FFFD}"); |
| 1205 | return; |
| 1206 | } |
| 1207 | if ($c === null) { |
| 1208 | $this->error(ParseErrorCode::EofInTag); |
| 1209 | $this->emit(new EofToken()); |
| 1210 | return; |
| 1211 | } |
| 1212 | if ($c === '"' || $c === "'" || $c === '<' || $c === '=' || $c === '`') { |
| 1213 | $this->error(ParseErrorCode::UnexpectedCharacterInUnquotedAttributeValue); |
| 1214 | } |
| 1215 | $this->appendToCurrentAttributeValue($this->currentTokenAsTag(), $c); |
| 1216 | } |
| 1217 | |
| 1218 | // ============================================================ |
| 1219 | // 13.2.5.39 After attribute value (quoted) state |
| 1220 | // ============================================================ |
| 1221 | private function stateAfterAttributeValueQuoted(): void |
| 1222 | { |
| 1223 | $c = $this->consume(); |
| 1224 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1225 | $this->state = TokenizerState::BeforeAttributeName; |
| 1226 | return; |
| 1227 | } |
| 1228 | if ($c === '/') { |
| 1229 | $this->state = TokenizerState::SelfClosingStartTag; |
| 1230 | return; |
| 1231 | } |
| 1232 | if ($c === '>') { |
| 1233 | $this->finalizeAndEmitTag(); |
| 1234 | $this->state = TokenizerState::Data; |
| 1235 | return; |
| 1236 | } |
| 1237 | if ($c === null) { |
| 1238 | $this->error(ParseErrorCode::EofInTag); |
| 1239 | $this->emit(new EofToken()); |
| 1240 | return; |
| 1241 | } |
| 1242 | $this->error(ParseErrorCode::MissingWhitespaceBetweenAttributes); |
| 1243 | $this->reconsumeIn(TokenizerState::BeforeAttributeName); |
| 1244 | } |
| 1245 | |
| 1246 | // ============================================================ |
| 1247 | // 13.2.5.40 Self-closing start tag state |
| 1248 | // ============================================================ |
| 1249 | private function stateSelfClosingStartTag(): void |
| 1250 | { |
| 1251 | $c = $this->consume(); |
| 1252 | if ($c === '>') { |
| 1253 | $tag = $this->currentTokenAsTag(); |
| 1254 | $tag->selfClosing = true; |
| 1255 | if ($tag instanceof EndTagToken) { |
| 1256 | $this->error(ParseErrorCode::EndTagWithTrailingSolidus); |
| 1257 | } |
| 1258 | $this->finalizeAndEmitTag(); |
| 1259 | $this->state = TokenizerState::Data; |
| 1260 | return; |
| 1261 | } |
| 1262 | if ($c === null) { |
| 1263 | $this->error(ParseErrorCode::EofInTag); |
| 1264 | $this->emit(new EofToken()); |
| 1265 | return; |
| 1266 | } |
| 1267 | $this->error(ParseErrorCode::UnexpectedSolidusInTag); |
| 1268 | $this->reconsumeIn(TokenizerState::BeforeAttributeName); |
| 1269 | } |
| 1270 | |
| 1271 | // ============================================================ |
| 1272 | // 13.2.5.41 Bogus comment state |
| 1273 | // ============================================================ |
| 1274 | private function stateBogusComment(): void |
| 1275 | { |
| 1276 | $c = $this->consume(); |
| 1277 | $comment = $this->currentTokenAsComment(); |
| 1278 | if ($c === '>') { |
| 1279 | $this->emit($comment); |
| 1280 | $this->state = TokenizerState::Data; |
| 1281 | return; |
| 1282 | } |
| 1283 | if ($c === null) { |
| 1284 | $this->emit($comment); |
| 1285 | $this->emit(new EofToken()); |
| 1286 | return; |
| 1287 | } |
| 1288 | if ($c === "\u{0000}") { |
| 1289 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 1290 | $comment->append("\u{FFFD}"); |
| 1291 | return; |
| 1292 | } |
| 1293 | $comment->append($c); |
| 1294 | } |
| 1295 | |
| 1296 | // ============================================================ |
| 1297 | // 13.2.5.42 Markup declaration open state |
| 1298 | // ============================================================ |
| 1299 | private function stateMarkupDeclarationOpen(): void |
| 1300 | { |
| 1301 | // Peek ahead at the next characters. Two cases at Phase 1B.2: |
| 1302 | // "--" → comment start |
| 1303 | // "doctype" (case-insensitive) → doctype |
| 1304 | // CDATA section ([CDATA[) is deferred to 1B.2-bis. |
| 1305 | $rest = $this->peekRemaining(7); |
| 1306 | if (str_starts_with($rest, '--')) { |
| 1307 | $this->advance(2); |
| 1308 | $this->currentToken = new CommentToken(); |
| 1309 | $this->state = TokenizerState::CommentStart; |
| 1310 | return; |
| 1311 | } |
| 1312 | if (strcasecmp(substr($rest, 0, 7), 'doctype') === 0) { |
| 1313 | $this->advance(7); |
| 1314 | $this->state = TokenizerState::Doctype; |
| 1315 | return; |
| 1316 | } |
| 1317 | if (str_starts_with($rest, '[CDATA[')) { |
| 1318 | $this->advance(7); |
| 1319 | if ($this->inForeignContent) { |
| 1320 | $this->state = TokenizerState::CdataSection; |
| 1321 | return; |
| 1322 | } |
| 1323 | $this->error(ParseErrorCode::CdataInHtmlContent); |
| 1324 | $this->currentToken = new CommentToken('[CDATA['); |
| 1325 | $this->state = TokenizerState::BogusComment; |
| 1326 | return; |
| 1327 | } |
| 1328 | $this->error(ParseErrorCode::IncorrectlyOpenedComment); |
| 1329 | $this->currentToken = new CommentToken(); |
| 1330 | $this->state = TokenizerState::BogusComment; |
| 1331 | } |
| 1332 | |
| 1333 | // ============================================================ |
| 1334 | // 13.2.5.43–48 Comment states |
| 1335 | // ============================================================ |
| 1336 | private function stateCommentStart(): void |
| 1337 | { |
| 1338 | $c = $this->consume(); |
| 1339 | if ($c === '-') { |
| 1340 | $this->state = TokenizerState::CommentStartDash; |
| 1341 | return; |
| 1342 | } |
| 1343 | if ($c === '>') { |
| 1344 | $this->error(ParseErrorCode::AbruptClosingOfEmptyComment); |
| 1345 | $this->emit($this->currentTokenAsComment()); |
| 1346 | $this->state = TokenizerState::Data; |
| 1347 | return; |
| 1348 | } |
| 1349 | $this->reconsumeIn(TokenizerState::Comment); |
| 1350 | } |
| 1351 | |
| 1352 | private function stateCommentStartDash(): void |
| 1353 | { |
| 1354 | $c = $this->consume(); |
| 1355 | if ($c === '-') { |
| 1356 | $this->state = TokenizerState::CommentEnd; |
| 1357 | return; |
| 1358 | } |
| 1359 | if ($c === '>') { |
| 1360 | $this->error(ParseErrorCode::AbruptClosingOfEmptyComment); |
| 1361 | $this->emit($this->currentTokenAsComment()); |
| 1362 | $this->state = TokenizerState::Data; |
| 1363 | return; |
| 1364 | } |
| 1365 | if ($c === null) { |
| 1366 | $this->error(ParseErrorCode::EofInComment); |
| 1367 | $this->emit($this->currentTokenAsComment()); |
| 1368 | $this->emit(new EofToken()); |
| 1369 | return; |
| 1370 | } |
| 1371 | $this->currentTokenAsComment()->append('-'); |
| 1372 | $this->reconsumeIn(TokenizerState::Comment); |
| 1373 | } |
| 1374 | |
| 1375 | private function stateComment(): void |
| 1376 | { |
| 1377 | $c = $this->consume(); |
| 1378 | $comment = $this->currentTokenAsComment(); |
| 1379 | if ($c === '<') { |
| 1380 | $comment->append('<'); |
| 1381 | $this->state = TokenizerState::CommentLessThanSign; |
| 1382 | return; |
| 1383 | } |
| 1384 | if ($c === '-') { |
| 1385 | $this->state = TokenizerState::CommentEndDash; |
| 1386 | return; |
| 1387 | } |
| 1388 | if ($c === "\u{0000}") { |
| 1389 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 1390 | $comment->append("\u{FFFD}"); |
| 1391 | return; |
| 1392 | } |
| 1393 | if ($c === null) { |
| 1394 | $this->error(ParseErrorCode::EofInComment); |
| 1395 | $this->emit($comment); |
| 1396 | $this->emit(new EofToken()); |
| 1397 | return; |
| 1398 | } |
| 1399 | $comment->append($c); |
| 1400 | } |
| 1401 | |
| 1402 | // ============================================================ |
| 1403 | // 13.2.5.45–48 Comment less-than-sign / bang recovery states |
| 1404 | // ============================================================ |
| 1405 | private function stateCommentLessThanSign(): void |
| 1406 | { |
| 1407 | $c = $this->consume(); |
| 1408 | $comment = $this->currentTokenAsComment(); |
| 1409 | if ($c === '!') { |
| 1410 | $comment->append('!'); |
| 1411 | $this->state = TokenizerState::CommentLessThanSignBang; |
| 1412 | return; |
| 1413 | } |
| 1414 | if ($c === '<') { |
| 1415 | $comment->append('<'); |
| 1416 | return; |
| 1417 | } |
| 1418 | $this->reconsumeIn(TokenizerState::Comment); |
| 1419 | } |
| 1420 | |
| 1421 | private function stateCommentLessThanSignBang(): void |
| 1422 | { |
| 1423 | $c = $this->consume(); |
| 1424 | if ($c === '-') { |
| 1425 | $this->state = TokenizerState::CommentLessThanSignBangDash; |
| 1426 | return; |
| 1427 | } |
| 1428 | $this->reconsumeIn(TokenizerState::Comment); |
| 1429 | } |
| 1430 | |
| 1431 | private function stateCommentLessThanSignBangDash(): void |
| 1432 | { |
| 1433 | $c = $this->consume(); |
| 1434 | if ($c === '-') { |
| 1435 | $this->state = TokenizerState::CommentLessThanSignBangDashDash; |
| 1436 | return; |
| 1437 | } |
| 1438 | $this->reconsumeIn(TokenizerState::CommentEndDash); |
| 1439 | } |
| 1440 | |
| 1441 | private function stateCommentLessThanSignBangDashDash(): void |
| 1442 | { |
| 1443 | $c = $this->consume(); |
| 1444 | if ($c === '>' || $c === null) { |
| 1445 | $this->reconsumeIn(TokenizerState::CommentEnd); |
| 1446 | return; |
| 1447 | } |
| 1448 | $this->error(ParseErrorCode::NestedComment); |
| 1449 | $this->reconsumeIn(TokenizerState::CommentEnd); |
| 1450 | } |
| 1451 | |
| 1452 | // ============================================================ |
| 1453 | // 13.2.5.69–71 CDATA section states (only valid in foreign content) |
| 1454 | // ============================================================ |
| 1455 | private function stateCdataSection(): void |
| 1456 | { |
| 1457 | $c = $this->consume(); |
| 1458 | if ($c === ']') { |
| 1459 | $this->state = TokenizerState::CdataSectionBracket; |
| 1460 | return; |
| 1461 | } |
| 1462 | if ($c === null) { |
| 1463 | $this->error(ParseErrorCode::EofInCdata); |
| 1464 | $this->emit(new EofToken()); |
| 1465 | return; |
| 1466 | } |
| 1467 | // NULL inside CDATA is emitted verbatim per spec — no replacement. |
| 1468 | $this->emitChar($c); |
| 1469 | } |
| 1470 | |
| 1471 | private function stateCdataSectionBracket(): void |
| 1472 | { |
| 1473 | $c = $this->consume(); |
| 1474 | if ($c === ']') { |
| 1475 | $this->state = TokenizerState::CdataSectionEnd; |
| 1476 | return; |
| 1477 | } |
| 1478 | $this->emitChar(']'); |
| 1479 | $this->reconsumeIn(TokenizerState::CdataSection); |
| 1480 | } |
| 1481 | |
| 1482 | private function stateCdataSectionEnd(): void |
| 1483 | { |
| 1484 | $c = $this->consume(); |
| 1485 | if ($c === ']') { |
| 1486 | $this->emitChar(']'); |
| 1487 | return; |
| 1488 | } |
| 1489 | if ($c === '>') { |
| 1490 | $this->state = TokenizerState::Data; |
| 1491 | return; |
| 1492 | } |
| 1493 | $this->emitChar(']'); |
| 1494 | $this->emitChar(']'); |
| 1495 | $this->reconsumeIn(TokenizerState::CdataSection); |
| 1496 | } |
| 1497 | |
| 1498 | private function stateCommentEndDash(): void |
| 1499 | { |
| 1500 | $c = $this->consume(); |
| 1501 | if ($c === '-') { |
| 1502 | $this->state = TokenizerState::CommentEnd; |
| 1503 | return; |
| 1504 | } |
| 1505 | if ($c === null) { |
| 1506 | $this->error(ParseErrorCode::EofInComment); |
| 1507 | $this->emit($this->currentTokenAsComment()); |
| 1508 | $this->emit(new EofToken()); |
| 1509 | return; |
| 1510 | } |
| 1511 | $this->currentTokenAsComment()->append('-'); |
| 1512 | $this->reconsumeIn(TokenizerState::Comment); |
| 1513 | } |
| 1514 | |
| 1515 | private function stateCommentEnd(): void |
| 1516 | { |
| 1517 | $c = $this->consume(); |
| 1518 | $comment = $this->currentTokenAsComment(); |
| 1519 | if ($c === '>') { |
| 1520 | $this->emit($comment); |
| 1521 | $this->state = TokenizerState::Data; |
| 1522 | return; |
| 1523 | } |
| 1524 | if ($c === '!') { |
| 1525 | $this->state = TokenizerState::CommentEndBang; |
| 1526 | return; |
| 1527 | } |
| 1528 | if ($c === '-') { |
| 1529 | $comment->append('-'); |
| 1530 | return; |
| 1531 | } |
| 1532 | if ($c === null) { |
| 1533 | $this->error(ParseErrorCode::EofInComment); |
| 1534 | $this->emit($comment); |
| 1535 | $this->emit(new EofToken()); |
| 1536 | return; |
| 1537 | } |
| 1538 | $comment->append('--'); |
| 1539 | $this->reconsumeIn(TokenizerState::Comment); |
| 1540 | } |
| 1541 | |
| 1542 | private function stateCommentEndBang(): void |
| 1543 | { |
| 1544 | $c = $this->consume(); |
| 1545 | $comment = $this->currentTokenAsComment(); |
| 1546 | if ($c === '-') { |
| 1547 | $comment->append('--!'); |
| 1548 | $this->state = TokenizerState::CommentEndDash; |
| 1549 | return; |
| 1550 | } |
| 1551 | if ($c === '>') { |
| 1552 | $this->error(ParseErrorCode::IncorrectlyClosedComment); |
| 1553 | $this->emit($comment); |
| 1554 | $this->state = TokenizerState::Data; |
| 1555 | return; |
| 1556 | } |
| 1557 | if ($c === null) { |
| 1558 | $this->error(ParseErrorCode::EofInComment); |
| 1559 | $this->emit($comment); |
| 1560 | $this->emit(new EofToken()); |
| 1561 | return; |
| 1562 | } |
| 1563 | $comment->append('--!'); |
| 1564 | $this->reconsumeIn(TokenizerState::Comment); |
| 1565 | } |
| 1566 | |
| 1567 | // ============================================================ |
| 1568 | // 13.2.5.53 DOCTYPE state (and friends) |
| 1569 | // ============================================================ |
| 1570 | private function stateDoctype(): void |
| 1571 | { |
| 1572 | $c = $this->consume(); |
| 1573 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1574 | $this->state = TokenizerState::BeforeDoctypeName; |
| 1575 | return; |
| 1576 | } |
| 1577 | if ($c === '>') { |
| 1578 | $this->reconsumeIn(TokenizerState::BeforeDoctypeName); |
| 1579 | return; |
| 1580 | } |
| 1581 | if ($c === null) { |
| 1582 | $this->error(ParseErrorCode::EofInDoctype); |
| 1583 | $token = new DoctypeToken(); |
| 1584 | $token->forceQuirks = true; |
| 1585 | $this->emit($token); |
| 1586 | $this->emit(new EofToken()); |
| 1587 | return; |
| 1588 | } |
| 1589 | $this->error(ParseErrorCode::MissingWhitespaceBeforeDoctypeName); |
| 1590 | $this->reconsumeIn(TokenizerState::BeforeDoctypeName); |
| 1591 | } |
| 1592 | |
| 1593 | private function stateBeforeDoctypeName(): void |
| 1594 | { |
| 1595 | $c = $this->consume(); |
| 1596 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1597 | return; |
| 1598 | } |
| 1599 | $token = new DoctypeToken(); |
| 1600 | $this->currentToken = $token; |
| 1601 | if ($c !== null && self::isAsciiUpperAlpha($c)) { |
| 1602 | $token->name = strtolower($c); |
| 1603 | $this->state = TokenizerState::DoctypeName; |
| 1604 | return; |
| 1605 | } |
| 1606 | if ($c === "\u{0000}") { |
| 1607 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 1608 | $token->name = "\u{FFFD}"; |
| 1609 | $this->state = TokenizerState::DoctypeName; |
| 1610 | return; |
| 1611 | } |
| 1612 | if ($c === '>') { |
| 1613 | $this->error(ParseErrorCode::MissingDoctypeName); |
| 1614 | $token->forceQuirks = true; |
| 1615 | $this->emit($token); |
| 1616 | $this->state = TokenizerState::Data; |
| 1617 | return; |
| 1618 | } |
| 1619 | if ($c === null) { |
| 1620 | $this->error(ParseErrorCode::EofInDoctype); |
| 1621 | $token->forceQuirks = true; |
| 1622 | $this->emit($token); |
| 1623 | $this->emit(new EofToken()); |
| 1624 | return; |
| 1625 | } |
| 1626 | $token->name = $c; |
| 1627 | $this->state = TokenizerState::DoctypeName; |
| 1628 | } |
| 1629 | |
| 1630 | private function stateDoctypeName(): void |
| 1631 | { |
| 1632 | $c = $this->consume(); |
| 1633 | $token = $this->currentTokenAsDoctype(); |
| 1634 | assert($token->name !== null); |
| 1635 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1636 | $this->state = TokenizerState::AfterDoctypeName; |
| 1637 | return; |
| 1638 | } |
| 1639 | if ($c === '>') { |
| 1640 | $this->emit($token); |
| 1641 | $this->state = TokenizerState::Data; |
| 1642 | return; |
| 1643 | } |
| 1644 | if ($c !== null && self::isAsciiUpperAlpha($c)) { |
| 1645 | $token->name .= strtolower($c); |
| 1646 | return; |
| 1647 | } |
| 1648 | if ($c === "\u{0000}") { |
| 1649 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 1650 | $token->name .= "\u{FFFD}"; |
| 1651 | return; |
| 1652 | } |
| 1653 | if ($c === null) { |
| 1654 | $this->error(ParseErrorCode::EofInDoctype); |
| 1655 | $token->forceQuirks = true; |
| 1656 | $this->emit($token); |
| 1657 | $this->emit(new EofToken()); |
| 1658 | return; |
| 1659 | } |
| 1660 | $token->name .= $c; |
| 1661 | } |
| 1662 | |
| 1663 | private function stateAfterDoctypeName(): void |
| 1664 | { |
| 1665 | $c = $this->consume(); |
| 1666 | $token = $this->currentTokenAsDoctype(); |
| 1667 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1668 | return; |
| 1669 | } |
| 1670 | if ($c === '>') { |
| 1671 | $this->emit($token); |
| 1672 | $this->state = TokenizerState::Data; |
| 1673 | return; |
| 1674 | } |
| 1675 | if ($c === null) { |
| 1676 | $this->error(ParseErrorCode::EofInDoctype); |
| 1677 | $token->forceQuirks = true; |
| 1678 | $this->emit($token); |
| 1679 | $this->emit(new EofToken()); |
| 1680 | return; |
| 1681 | } |
| 1682 | // Look ahead for PUBLIC or SYSTEM (case-insensitive, including the |
| 1683 | // current char). pos points one past the current char; -1 to include it. |
| 1684 | $effectivePos = $this->reconsume ? $this->pos - 1 : $this->pos - 1; |
| 1685 | $window = implode('', array_slice($this->chars, $effectivePos, 6)); |
| 1686 | if (strcasecmp($window, 'PUBLIC') === 0) { |
| 1687 | $this->pos = $effectivePos + 6; |
| 1688 | $this->reconsume = false; |
| 1689 | $this->state = TokenizerState::AfterDoctypePublicKeyword; |
| 1690 | return; |
| 1691 | } |
| 1692 | if (strcasecmp($window, 'SYSTEM') === 0) { |
| 1693 | $this->pos = $effectivePos + 6; |
| 1694 | $this->reconsume = false; |
| 1695 | $this->state = TokenizerState::AfterDoctypeSystemKeyword; |
| 1696 | return; |
| 1697 | } |
| 1698 | $this->error(ParseErrorCode::InvalidCharacterSequenceAfterDoctypeName); |
| 1699 | $token->forceQuirks = true; |
| 1700 | $this->reconsumeIn(TokenizerState::BogusDoctype); |
| 1701 | } |
| 1702 | |
| 1703 | // ============================================================ |
| 1704 | // 13.2.5.57–67 DOCTYPE PUBLIC / SYSTEM identifier states |
| 1705 | // ============================================================ |
| 1706 | private function stateAfterDoctypePublicKeyword(): void |
| 1707 | { |
| 1708 | $c = $this->consume(); |
| 1709 | $token = $this->currentTokenAsDoctype(); |
| 1710 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1711 | $this->state = TokenizerState::BeforeDoctypePublicIdentifier; |
| 1712 | return; |
| 1713 | } |
| 1714 | if ($c === '"') { |
| 1715 | $this->error(ParseErrorCode::MissingWhitespaceAfterDoctypePublicKeyword); |
| 1716 | $token->publicId = ''; |
| 1717 | $this->state = TokenizerState::DoctypePublicIdentifierDoubleQuoted; |
| 1718 | return; |
| 1719 | } |
| 1720 | if ($c === "'") { |
| 1721 | $this->error(ParseErrorCode::MissingWhitespaceAfterDoctypePublicKeyword); |
| 1722 | $token->publicId = ''; |
| 1723 | $this->state = TokenizerState::DoctypePublicIdentifierSingleQuoted; |
| 1724 | return; |
| 1725 | } |
| 1726 | if ($c === '>') { |
| 1727 | $this->error(ParseErrorCode::MissingDoctypePublicIdentifier); |
| 1728 | $token->forceQuirks = true; |
| 1729 | $this->emit($token); |
| 1730 | $this->state = TokenizerState::Data; |
| 1731 | return; |
| 1732 | } |
| 1733 | if ($c === null) { |
| 1734 | $this->error(ParseErrorCode::EofInDoctype); |
| 1735 | $token->forceQuirks = true; |
| 1736 | $this->emit($token); |
| 1737 | $this->emit(new EofToken()); |
| 1738 | return; |
| 1739 | } |
| 1740 | $this->error(ParseErrorCode::MissingQuoteBeforeDoctypePublicIdentifier); |
| 1741 | $token->forceQuirks = true; |
| 1742 | $this->reconsumeIn(TokenizerState::BogusDoctype); |
| 1743 | } |
| 1744 | |
| 1745 | private function stateBeforeDoctypePublicIdentifier(): void |
| 1746 | { |
| 1747 | $c = $this->consume(); |
| 1748 | $token = $this->currentTokenAsDoctype(); |
| 1749 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1750 | return; |
| 1751 | } |
| 1752 | if ($c === '"') { |
| 1753 | $token->publicId = ''; |
| 1754 | $this->state = TokenizerState::DoctypePublicIdentifierDoubleQuoted; |
| 1755 | return; |
| 1756 | } |
| 1757 | if ($c === "'") { |
| 1758 | $token->publicId = ''; |
| 1759 | $this->state = TokenizerState::DoctypePublicIdentifierSingleQuoted; |
| 1760 | return; |
| 1761 | } |
| 1762 | if ($c === '>') { |
| 1763 | $this->error(ParseErrorCode::MissingDoctypePublicIdentifier); |
| 1764 | $token->forceQuirks = true; |
| 1765 | $this->emit($token); |
| 1766 | $this->state = TokenizerState::Data; |
| 1767 | return; |
| 1768 | } |
| 1769 | if ($c === null) { |
| 1770 | $this->error(ParseErrorCode::EofInDoctype); |
| 1771 | $token->forceQuirks = true; |
| 1772 | $this->emit($token); |
| 1773 | $this->emit(new EofToken()); |
| 1774 | return; |
| 1775 | } |
| 1776 | $this->error(ParseErrorCode::MissingQuoteBeforeDoctypePublicIdentifier); |
| 1777 | $token->forceQuirks = true; |
| 1778 | $this->reconsumeIn(TokenizerState::BogusDoctype); |
| 1779 | } |
| 1780 | |
| 1781 | private function stateDoctypePublicIdentifierDoubleQuoted(): void |
| 1782 | { |
| 1783 | $this->doctypeQuotedIdentifier(true, '"'); |
| 1784 | } |
| 1785 | |
| 1786 | private function stateDoctypePublicIdentifierSingleQuoted(): void |
| 1787 | { |
| 1788 | $this->doctypeQuotedIdentifier(true, "'"); |
| 1789 | } |
| 1790 | |
| 1791 | private function stateAfterDoctypePublicIdentifier(): void |
| 1792 | { |
| 1793 | $c = $this->consume(); |
| 1794 | $token = $this->currentTokenAsDoctype(); |
| 1795 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1796 | $this->state = TokenizerState::BetweenDoctypePublicAndSystemIdentifiers; |
| 1797 | return; |
| 1798 | } |
| 1799 | if ($c === '>') { |
| 1800 | $this->emit($token); |
| 1801 | $this->state = TokenizerState::Data; |
| 1802 | return; |
| 1803 | } |
| 1804 | if ($c === '"') { |
| 1805 | $this->error(ParseErrorCode::MissingWhitespaceBetweenDoctypePublicAndSystemIdentifiers); |
| 1806 | $token->systemId = ''; |
| 1807 | $this->state = TokenizerState::DoctypeSystemIdentifierDoubleQuoted; |
| 1808 | return; |
| 1809 | } |
| 1810 | if ($c === "'") { |
| 1811 | $this->error(ParseErrorCode::MissingWhitespaceBetweenDoctypePublicAndSystemIdentifiers); |
| 1812 | $token->systemId = ''; |
| 1813 | $this->state = TokenizerState::DoctypeSystemIdentifierSingleQuoted; |
| 1814 | return; |
| 1815 | } |
| 1816 | if ($c === null) { |
| 1817 | $this->error(ParseErrorCode::EofInDoctype); |
| 1818 | $token->forceQuirks = true; |
| 1819 | $this->emit($token); |
| 1820 | $this->emit(new EofToken()); |
| 1821 | return; |
| 1822 | } |
| 1823 | $this->error(ParseErrorCode::MissingQuoteBeforeDoctypeSystemIdentifier); |
| 1824 | $token->forceQuirks = true; |
| 1825 | $this->reconsumeIn(TokenizerState::BogusDoctype); |
| 1826 | } |
| 1827 | |
| 1828 | private function stateBetweenDoctypePublicAndSystemIdentifiers(): void |
| 1829 | { |
| 1830 | $c = $this->consume(); |
| 1831 | $token = $this->currentTokenAsDoctype(); |
| 1832 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1833 | return; |
| 1834 | } |
| 1835 | if ($c === '>') { |
| 1836 | $this->emit($token); |
| 1837 | $this->state = TokenizerState::Data; |
| 1838 | return; |
| 1839 | } |
| 1840 | if ($c === '"') { |
| 1841 | $token->systemId = ''; |
| 1842 | $this->state = TokenizerState::DoctypeSystemIdentifierDoubleQuoted; |
| 1843 | return; |
| 1844 | } |
| 1845 | if ($c === "'") { |
| 1846 | $token->systemId = ''; |
| 1847 | $this->state = TokenizerState::DoctypeSystemIdentifierSingleQuoted; |
| 1848 | return; |
| 1849 | } |
| 1850 | if ($c === null) { |
| 1851 | $this->error(ParseErrorCode::EofInDoctype); |
| 1852 | $token->forceQuirks = true; |
| 1853 | $this->emit($token); |
| 1854 | $this->emit(new EofToken()); |
| 1855 | return; |
| 1856 | } |
| 1857 | $this->error(ParseErrorCode::MissingQuoteBeforeDoctypeSystemIdentifier); |
| 1858 | $token->forceQuirks = true; |
| 1859 | $this->reconsumeIn(TokenizerState::BogusDoctype); |
| 1860 | } |
| 1861 | |
| 1862 | private function stateAfterDoctypeSystemKeyword(): void |
| 1863 | { |
| 1864 | $c = $this->consume(); |
| 1865 | $token = $this->currentTokenAsDoctype(); |
| 1866 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1867 | $this->state = TokenizerState::BeforeDoctypeSystemIdentifier; |
| 1868 | return; |
| 1869 | } |
| 1870 | if ($c === '"') { |
| 1871 | $this->error(ParseErrorCode::MissingWhitespaceAfterDoctypeSystemKeyword); |
| 1872 | $token->systemId = ''; |
| 1873 | $this->state = TokenizerState::DoctypeSystemIdentifierDoubleQuoted; |
| 1874 | return; |
| 1875 | } |
| 1876 | if ($c === "'") { |
| 1877 | $this->error(ParseErrorCode::MissingWhitespaceAfterDoctypeSystemKeyword); |
| 1878 | $token->systemId = ''; |
| 1879 | $this->state = TokenizerState::DoctypeSystemIdentifierSingleQuoted; |
| 1880 | return; |
| 1881 | } |
| 1882 | if ($c === '>') { |
| 1883 | $this->error(ParseErrorCode::MissingDoctypeSystemIdentifier); |
| 1884 | $token->forceQuirks = true; |
| 1885 | $this->emit($token); |
| 1886 | $this->state = TokenizerState::Data; |
| 1887 | return; |
| 1888 | } |
| 1889 | if ($c === null) { |
| 1890 | $this->error(ParseErrorCode::EofInDoctype); |
| 1891 | $token->forceQuirks = true; |
| 1892 | $this->emit($token); |
| 1893 | $this->emit(new EofToken()); |
| 1894 | return; |
| 1895 | } |
| 1896 | $this->error(ParseErrorCode::MissingQuoteBeforeDoctypeSystemIdentifier); |
| 1897 | $token->forceQuirks = true; |
| 1898 | $this->reconsumeIn(TokenizerState::BogusDoctype); |
| 1899 | } |
| 1900 | |
| 1901 | private function stateBeforeDoctypeSystemIdentifier(): void |
| 1902 | { |
| 1903 | $c = $this->consume(); |
| 1904 | $token = $this->currentTokenAsDoctype(); |
| 1905 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1906 | return; |
| 1907 | } |
| 1908 | if ($c === '"') { |
| 1909 | $token->systemId = ''; |
| 1910 | $this->state = TokenizerState::DoctypeSystemIdentifierDoubleQuoted; |
| 1911 | return; |
| 1912 | } |
| 1913 | if ($c === "'") { |
| 1914 | $token->systemId = ''; |
| 1915 | $this->state = TokenizerState::DoctypeSystemIdentifierSingleQuoted; |
| 1916 | return; |
| 1917 | } |
| 1918 | if ($c === '>') { |
| 1919 | $this->error(ParseErrorCode::MissingDoctypeSystemIdentifier); |
| 1920 | $token->forceQuirks = true; |
| 1921 | $this->emit($token); |
| 1922 | $this->state = TokenizerState::Data; |
| 1923 | return; |
| 1924 | } |
| 1925 | if ($c === null) { |
| 1926 | $this->error(ParseErrorCode::EofInDoctype); |
| 1927 | $token->forceQuirks = true; |
| 1928 | $this->emit($token); |
| 1929 | $this->emit(new EofToken()); |
| 1930 | return; |
| 1931 | } |
| 1932 | $this->error(ParseErrorCode::MissingQuoteBeforeDoctypeSystemIdentifier); |
| 1933 | $token->forceQuirks = true; |
| 1934 | $this->reconsumeIn(TokenizerState::BogusDoctype); |
| 1935 | } |
| 1936 | |
| 1937 | private function stateDoctypeSystemIdentifierDoubleQuoted(): void |
| 1938 | { |
| 1939 | $this->doctypeQuotedIdentifier(false, '"'); |
| 1940 | } |
| 1941 | |
| 1942 | private function stateDoctypeSystemIdentifierSingleQuoted(): void |
| 1943 | { |
| 1944 | $this->doctypeQuotedIdentifier(false, "'"); |
| 1945 | } |
| 1946 | |
| 1947 | private function stateAfterDoctypeSystemIdentifier(): void |
| 1948 | { |
| 1949 | $c = $this->consume(); |
| 1950 | $token = $this->currentTokenAsDoctype(); |
| 1951 | if ($c === "\t" || $c === "\n" || $c === "\f" || $c === ' ') { |
| 1952 | return; |
| 1953 | } |
| 1954 | if ($c === '>') { |
| 1955 | $this->emit($token); |
| 1956 | $this->state = TokenizerState::Data; |
| 1957 | return; |
| 1958 | } |
| 1959 | if ($c === null) { |
| 1960 | $this->error(ParseErrorCode::EofInDoctype); |
| 1961 | $token->forceQuirks = true; |
| 1962 | $this->emit($token); |
| 1963 | $this->emit(new EofToken()); |
| 1964 | return; |
| 1965 | } |
| 1966 | // Per spec: do NOT set force-quirks here. The DOCTYPE is otherwise |
| 1967 | // syntactically valid; trailing garbage just goes to a bogus state. |
| 1968 | $this->error(ParseErrorCode::UnexpectedCharacterAfterDoctypeSystemIdentifier); |
| 1969 | $this->reconsumeIn(TokenizerState::BogusDoctype); |
| 1970 | } |
| 1971 | |
| 1972 | /** |
| 1973 | * Shared logic for the four quoted-identifier states. $isPublic selects |
| 1974 | * which identifier field to append to; $terminator is " or '. |
| 1975 | */ |
| 1976 | private function doctypeQuotedIdentifier(bool $isPublic, string $terminator): void |
| 1977 | { |
| 1978 | $c = $this->consume(); |
| 1979 | $token = $this->currentTokenAsDoctype(); |
| 1980 | $field = $isPublic ? 'publicId' : 'systemId'; |
| 1981 | if ($c === $terminator) { |
| 1982 | $this->state = $isPublic |
| 1983 | ? TokenizerState::AfterDoctypePublicIdentifier |
| 1984 | : TokenizerState::AfterDoctypeSystemIdentifier; |
| 1985 | return; |
| 1986 | } |
| 1987 | if ($c === "\u{0000}") { |
| 1988 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 1989 | assert($token->{$field} !== null); |
| 1990 | $token->{$field} .= "\u{FFFD}"; |
| 1991 | return; |
| 1992 | } |
| 1993 | if ($c === '>') { |
| 1994 | $this->error($isPublic |
| 1995 | ? ParseErrorCode::AbruptDoctypePublicIdentifier |
| 1996 | : ParseErrorCode::AbruptDoctypeSystemIdentifier); |
| 1997 | $token->forceQuirks = true; |
| 1998 | $this->emit($token); |
| 1999 | $this->state = TokenizerState::Data; |
| 2000 | return; |
| 2001 | } |
| 2002 | if ($c === null) { |
| 2003 | $this->error(ParseErrorCode::EofInDoctype); |
| 2004 | $token->forceQuirks = true; |
| 2005 | $this->emit($token); |
| 2006 | $this->emit(new EofToken()); |
| 2007 | return; |
| 2008 | } |
| 2009 | assert($token->{$field} !== null); |
| 2010 | $token->{$field} .= $c; |
| 2011 | } |
| 2012 | |
| 2013 | private function stateBogusDoctype(): void |
| 2014 | { |
| 2015 | $c = $this->consume(); |
| 2016 | if ($c === '>') { |
| 2017 | $this->emit($this->currentTokenAsDoctype()); |
| 2018 | $this->state = TokenizerState::Data; |
| 2019 | return; |
| 2020 | } |
| 2021 | if ($c === null) { |
| 2022 | $this->emit($this->currentTokenAsDoctype()); |
| 2023 | $this->emit(new EofToken()); |
| 2024 | return; |
| 2025 | } |
| 2026 | if ($c === "\u{0000}") { |
| 2027 | $this->error(ParseErrorCode::UnexpectedNullCharacter); |
| 2028 | } |
| 2029 | // Otherwise, ignore (no append per spec). |
| 2030 | } |
| 2031 | |
| 2032 | // ============================================================ |
| 2033 | // 13.2.5.72–80 Character reference states |
| 2034 | // ============================================================ |
| 2035 | private function stateCharacterReference(): void |
| 2036 | { |
| 2037 | $this->tempBuffer = '&'; |
| 2038 | $c = $this->consume(); |
| 2039 | if ($c === null) { |
| 2040 | $this->flushTempBufferToCharOrAttribute(); |
| 2041 | $this->reconsumeIn($this->returnState); |
| 2042 | return; |
| 2043 | } |
| 2044 | if (self::isAsciiAlphanumeric($c)) { |
| 2045 | $this->reconsumeIn(TokenizerState::NamedCharacterReference); |
| 2046 | return; |
| 2047 | } |
| 2048 | if ($c === '#') { |
| 2049 | $this->tempBuffer .= '#'; |
| 2050 | $this->state = TokenizerState::NumericCharacterReference; |
| 2051 | return; |
| 2052 | } |
| 2053 | $this->flushTempBufferToCharOrAttribute(); |
| 2054 | $this->reconsumeIn($this->returnState); |
| 2055 | } |
| 2056 | |
| 2057 | private function stateNamedCharacterReference(): void |
| 2058 | { |
| 2059 | // Greedy longest-match against the in-memory table. WHATWG defines |
| 2060 | // matching against the spec's full ~2200-entry trie; our table is the |
| 2061 | // high-frequency subset (see NamedCharacterReferences). |
| 2062 | $start = $this->reconsume ? $this->pos - 1 : $this->pos; |
| 2063 | $bestMatch = null; |
| 2064 | $bestLen = 0; |
| 2065 | for ($len = 1; $len <= 32 && $start + $len <= $this->length; $len++) { |
| 2066 | $candidate = implode('', array_slice($this->chars, $start, $len)); |
| 2067 | if (isset(NamedCharacterReferences::TABLE[$candidate])) { |
| 2068 | $bestMatch = $candidate; |
| 2069 | $bestLen = $len; |
| 2070 | } |
| 2071 | } |
| 2072 | |
| 2073 | if ($bestMatch !== null) { |
| 2074 | $hasSemicolon = str_ends_with($bestMatch, ';'); |
| 2075 | $nextChar = $start + $bestLen < $this->length ? $this->chars[$start + $bestLen] : null; |
| 2076 | $inAttribute = $this->returnState === TokenizerState::AttributeValueDoubleQuoted |
| 2077 | || $this->returnState === TokenizerState::AttributeValueSingleQuoted |
| 2078 | || $this->returnState === TokenizerState::AttributeValueUnquoted; |
| 2079 | |
| 2080 | // Special case for attribute values + legacy entries: if the next |
| 2081 | // char is "=" or alphanumeric, don't decode (preserves |
| 2082 | // backward-compat with old URLs like ?foo=bar©=true). |
| 2083 | if (!$hasSemicolon && $inAttribute && $nextChar !== null |
| 2084 | && ($nextChar === '=' || self::isAsciiAlphanumeric($nextChar)) |
| 2085 | ) { |
| 2086 | $this->tempBuffer = '&' . $bestMatch; |
| 2087 | $this->advance($bestLen); |
| 2088 | $this->reconsume = false; |
| 2089 | $this->flushTempBufferToCharOrAttribute(); |
| 2090 | $this->state = $this->returnState; |
| 2091 | return; |
| 2092 | } |
| 2093 | |
| 2094 | if (!$hasSemicolon) { |
| 2095 | $this->error(ParseErrorCode::MissingSemicolonAfterCharacterReference); |
| 2096 | } |
| 2097 | $this->tempBuffer = NamedCharacterReferences::TABLE[$bestMatch]; |
| 2098 | $this->advance($bestLen); |
| 2099 | $this->reconsume = false; |
| 2100 | $this->flushTempBufferToCharOrAttribute(); |
| 2101 | $this->state = $this->returnState; |
| 2102 | return; |
| 2103 | } |
| 2104 | |
| 2105 | // No match — flush "&" and fall through to the ambiguous-ampersand state |
| 2106 | // to consume any remaining ASCII alphanumerics + ";" without decoding. |
| 2107 | $this->flushTempBufferToCharOrAttribute(); |
| 2108 | $this->state = TokenizerState::AmbiguousAmpersand; |
| 2109 | } |
| 2110 | |
| 2111 | private function stateAmbiguousAmpersand(): void |
| 2112 | { |
| 2113 | $c = $this->consume(); |
| 2114 | if ($c !== null && self::isAsciiAlphanumeric($c)) { |
| 2115 | $inAttribute = $this->returnState === TokenizerState::AttributeValueDoubleQuoted |
| 2116 | || $this->returnState === TokenizerState::AttributeValueSingleQuoted |
| 2117 | || $this->returnState === TokenizerState::AttributeValueUnquoted; |
| 2118 | if ($inAttribute) { |
| 2119 | $this->appendToCurrentAttributeValue($this->currentTokenAsTag(), $c); |
| 2120 | } else { |
| 2121 | $this->emitChar($c); |
| 2122 | } |
| 2123 | return; |
| 2124 | } |
| 2125 | if ($c === ';') { |
| 2126 | $this->error(ParseErrorCode::UnknownNamedCharacterReference); |
| 2127 | } |
| 2128 | $this->reconsumeIn($this->returnState); |
| 2129 | } |
| 2130 | |
| 2131 | private function stateNumericCharacterReference(): void |
| 2132 | { |
| 2133 | $this->characterReferenceCode = 0; |
| 2134 | $c = $this->consume(); |
| 2135 | if ($c === 'x' || $c === 'X') { |
| 2136 | $this->tempBuffer .= $c; |
| 2137 | $this->state = TokenizerState::HexadecimalCharacterReferenceStart; |
| 2138 | return; |
| 2139 | } |
| 2140 | $this->reconsumeIn(TokenizerState::DecimalCharacterReferenceStart); |
| 2141 | } |
| 2142 | |
| 2143 | private function stateHexadecimalCharacterReferenceStart(): void |
| 2144 | { |
| 2145 | $c = $this->consume(); |
| 2146 | if ($c !== null && self::isAsciiHexDigit($c)) { |
| 2147 | $this->reconsumeIn(TokenizerState::HexadecimalCharacterReference); |
| 2148 | return; |
| 2149 | } |
| 2150 | $this->error(ParseErrorCode::AbsenceOfDigitsInNumericCharacterReference); |
| 2151 | $this->flushTempBufferToCharOrAttribute(); |
| 2152 | $this->reconsumeIn($this->returnState); |
| 2153 | } |
| 2154 | |
| 2155 | private function stateDecimalCharacterReferenceStart(): void |
| 2156 | { |
| 2157 | $c = $this->consume(); |
| 2158 | if ($c !== null && ctype_digit($c)) { |
| 2159 | $this->reconsumeIn(TokenizerState::DecimalCharacterReference); |
| 2160 | return; |
| 2161 | } |
| 2162 | $this->error(ParseErrorCode::AbsenceOfDigitsInNumericCharacterReference); |
| 2163 | $this->flushTempBufferToCharOrAttribute(); |
| 2164 | $this->reconsumeIn($this->returnState); |
| 2165 | } |
| 2166 | |
| 2167 | private function stateHexadecimalCharacterReference(): void |
| 2168 | { |
| 2169 | $c = $this->consume(); |
| 2170 | if ($c === null) { |
| 2171 | $this->error(ParseErrorCode::MissingSemicolonAfterCharacterReference); |
| 2172 | $this->state = TokenizerState::NumericCharacterReferenceEnd; |
| 2173 | $this->reconsume = true; |
| 2174 | return; |
| 2175 | } |
| 2176 | if (ctype_digit($c)) { |
| 2177 | $this->characterReferenceCode = $this->characterReferenceCode * 16 + (ord($c) - 0x30); |
| 2178 | return; |
| 2179 | } |
| 2180 | if ($c >= 'A' && $c <= 'F') { |
| 2181 | $this->characterReferenceCode = $this->characterReferenceCode * 16 + (ord($c) - 0x37); |
| 2182 | return; |
| 2183 | } |
| 2184 | if ($c >= 'a' && $c <= 'f') { |
| 2185 | $this->characterReferenceCode = $this->characterReferenceCode * 16 + (ord($c) - 0x57); |
| 2186 | return; |
| 2187 | } |
| 2188 | if ($c === ';') { |
| 2189 | $this->state = TokenizerState::NumericCharacterReferenceEnd; |
| 2190 | return; |
| 2191 | } |
| 2192 | $this->error(ParseErrorCode::MissingSemicolonAfterCharacterReference); |
| 2193 | $this->reconsumeIn(TokenizerState::NumericCharacterReferenceEnd); |
| 2194 | } |
| 2195 | |
| 2196 | private function stateDecimalCharacterReference(): void |
| 2197 | { |
| 2198 | $c = $this->consume(); |
| 2199 | if ($c === null) { |
| 2200 | $this->error(ParseErrorCode::MissingSemicolonAfterCharacterReference); |
| 2201 | $this->state = TokenizerState::NumericCharacterReferenceEnd; |
| 2202 | $this->reconsume = true; |
| 2203 | return; |
| 2204 | } |
| 2205 | if (ctype_digit($c)) { |
| 2206 | $this->characterReferenceCode = $this->characterReferenceCode * 10 + (ord($c) - 0x30); |
| 2207 | return; |
| 2208 | } |
| 2209 | if ($c === ';') { |
| 2210 | $this->state = TokenizerState::NumericCharacterReferenceEnd; |
| 2211 | return; |
| 2212 | } |
| 2213 | $this->error(ParseErrorCode::MissingSemicolonAfterCharacterReference); |
| 2214 | $this->reconsumeIn(TokenizerState::NumericCharacterReferenceEnd); |
| 2215 | } |
| 2216 | |
| 2217 | private function stateNumericCharacterReferenceEnd(): void |
| 2218 | { |
| 2219 | $code = $this->characterReferenceCode; |
| 2220 | if ($code === 0) { |
| 2221 | $this->error(ParseErrorCode::NullCharacterReference); |
| 2222 | $code = 0xFFFD; |
| 2223 | } elseif ($code > 0x10FFFF) { |
| 2224 | $this->error(ParseErrorCode::CharacterReferenceOutsideUnicodeRange); |
| 2225 | $code = 0xFFFD; |
| 2226 | } elseif ($code >= 0xD800 && $code <= 0xDFFF) { |
| 2227 | $this->error(ParseErrorCode::SurrogateCharacterReference); |
| 2228 | $code = 0xFFFD; |
| 2229 | } elseif (isset(NamedCharacterReferences::NUMERIC_REPLACEMENTS[$code])) { |
| 2230 | $this->error(ParseErrorCode::ControlCharacterReference); |
| 2231 | $code = NamedCharacterReferences::NUMERIC_REPLACEMENTS[$code]; |
| 2232 | } |
| 2233 | $this->tempBuffer = mb_chr($code, 'UTF-8'); |
| 2234 | $this->flushTempBufferToCharOrAttribute(); |
| 2235 | $this->state = $this->returnState; |
| 2236 | } |
| 2237 | |
| 2238 | private function flushTempBufferToCharOrAttribute(): void |
| 2239 | { |
| 2240 | $inAttribute = $this->returnState === TokenizerState::AttributeValueDoubleQuoted |
| 2241 | || $this->returnState === TokenizerState::AttributeValueSingleQuoted |
| 2242 | || $this->returnState === TokenizerState::AttributeValueUnquoted; |
| 2243 | if ($inAttribute) { |
| 2244 | $this->appendToCurrentAttributeValue($this->currentTokenAsTag(), $this->tempBuffer); |
| 2245 | } else { |
| 2246 | if ($this->tempBuffer !== '') { |
| 2247 | $this->emitChar($this->tempBuffer); |
| 2248 | } |
| 2249 | } |
| 2250 | $this->tempBuffer = ''; |
| 2251 | } |
| 2252 | |
| 2253 | // ============================================================ |
| 2254 | // Tag finalisation |
| 2255 | // ============================================================ |
| 2256 | private function finalizeAndEmitTag(): void |
| 2257 | { |
| 2258 | $tag = $this->currentTokenAsTag(); |
| 2259 | $this->dedupAttributes($tag); |
| 2260 | if ($tag instanceof EndTagToken && count($tag->attributes) > 0) { |
| 2261 | $this->error(ParseErrorCode::EndTagWithAttributes); |
| 2262 | } |
| 2263 | $this->emit($tag); |
| 2264 | } |
| 2265 | |
| 2266 | // ============================================================ |
| 2267 | // Character classification helpers |
| 2268 | // ============================================================ |
| 2269 | private static function isAsciiAlpha(string $c): bool |
| 2270 | { |
| 2271 | return ($c >= 'a' && $c <= 'z') || ($c >= 'A' && $c <= 'Z'); |
| 2272 | } |
| 2273 | |
| 2274 | private static function isAsciiUpperAlpha(string $c): bool |
| 2275 | { |
| 2276 | return $c >= 'A' && $c <= 'Z'; |
| 2277 | } |
| 2278 | |
| 2279 | private static function isAsciiLowerAlpha(string $c): bool |
| 2280 | { |
| 2281 | return $c >= 'a' && $c <= 'z'; |
| 2282 | } |
| 2283 | |
| 2284 | private static function isAsciiAlphanumeric(string $c): bool |
| 2285 | { |
| 2286 | return self::isAsciiAlpha($c) || ctype_digit($c); |
| 2287 | } |
| 2288 | |
| 2289 | private static function isAsciiHexDigit(string $c): bool |
| 2290 | { |
| 2291 | return ctype_digit($c) || ($c >= 'A' && $c <= 'F') || ($c >= 'a' && $c <= 'f'); |
| 2292 | } |
| 2293 | } |