diff options
| author | Technosophos <[email protected]> | 2013-04-15 17:26:04 -0500 |
|---|---|---|
| committer | Technosophos <[email protected]> | 2013-04-15 17:26:04 -0500 |
| commit | 34718c58884fe5e7d645e4bf12d9c39d77cc8b4d (patch) | |
| tree | 074b1b33fe3581907cacac04a0e8806dbf3a4612 /src | |
| parent | a4f2aabfb05e16d5a29f1256f82e94b5fbe73583 (diff) | |
First shot at DOCTYPE parsing and testing.
Diffstat (limited to 'src')
| -rw-r--r-- | src/HTML5/Parser/Tokenizer.php | 93 |
1 files changed, 88 insertions, 5 deletions
diff --git a/src/HTML5/Parser/Tokenizer.php b/src/HTML5/Parser/Tokenizer.php index 378af43..466cb5d 100644 --- a/src/HTML5/Parser/Tokenizer.php +++ b/src/HTML5/Parser/Tokenizer.php @@ -244,7 +244,7 @@ class Tokenizer { } // Doctype elseif($tok == 'D') { - return $this->doctype(); + return $this->doctype(''); } // CDATA section elseif($tok == '[') { @@ -411,6 +411,15 @@ class Tokenizer { $this->scanner->unconsume(1); return FALSE; } + + /** + * Parse a DOCTYPE. + * + * Parse a DOCTYPE declaration. This method has strong bearing on whether or + * not Quirksmode is enabled on the event handler. + * + * @todo This method is a little long. Should probably refactor. + */ protected function doctype() { if ($this->scanner->current() != 'D') { return FALSE; @@ -427,7 +436,7 @@ class Tokenizer { // EOF: die. if ($tok === FALSE) { - $this->events->doctype('html5','','', TRUE); + $this->events->doctype('html5',EventHandler::DOCTYPE_NONE,'', TRUE); return $this->eof(); } @@ -445,14 +454,88 @@ class Tokenizer { // Lowercase ASCII, replace \0 with FFFD $doctypeName = strtolower(strtr($doctypeName, "\0", UTF8Utils::FFFD)); - // If FALSE, emit a parse error. + $tok = $this->scanner->current(); + + // If FALSE, emit a parse error, DOCTYPE, and return. + if ($tok === FALSE) { + $this->parseError('Unexpected EOF in DOCTYPE declaration.'); + $this->events->doctype($doctypeName, EventHandler::DOCTYPE_NONE, NULL, TRUE); + return TRUE; + } + + // Short DOCTYPE, like <!DOCTYPE html> + if ($tok == '>') { + $this->events->doctype($doctypeName); + $this->scanner->next(); + return TRUE; + } + + $pub = strtoupper($this->scanner->getAsciiAlpha()); + $white = strlen($this->scanner->whitespace()); + $tok = $this->scanner->current(); + + // Get ID, and flag it as pub or system. + if (($pub == 'PUBLIC' || $pub == 'SYSTEM') && $white > 0) { + // Get the sys ID. + $type = $pub == 'PUBLIC' ? EventHandler::DOCTYPE_PUBLIC : EventHandler::DOCTYPE_SYSTEM; + $id = $this->quotedString("\0>"); + if ($id === FALSE) { + $this->events->doctype($doctypeName, $type, $pub, FALSE); + return FALSE; + } + + // Well-formed complete DOCTYPE. + $this->scanner->whitespace(); + if ($this->scanner->current() == '>') { + $this->events->doctype($doctypeName, $type, $id, FALSE); + return TRUE; + } + + // If we get here, we have <!DOCTYPE foo PUBLIC "bar" SOME_JUNK + // Throw away the junk, parse error, quirks mode, return TRUE. + $this->scanner->charsUntil(">"); + $this->parseError("Malformed DOCTYPE."); + $this->events->doctype($doctypeName, $type, $id, TRUE); + return TRUE; + } + + // Else it's a bogus DOCTYPE. + // Consume to > and trash. + $this->scanner->charsUntil('>'); - // Get pub and sys IDs + $this->parseError("Expected PUBLIC or SYSTEM. Got %s%s.", $pub); + $this->events->doctype($doctypeName, 0, NULL, TRUE); + return TRUE; - // If >, end doctype + } + /** + * Utility for reading a quoted string. + * + * @param string $stopchars + * Characters (in addition to a close-quote) that should stop the string. + * E.g. sometimes '>' is higher precedence than '"' or "'". + * @return mixed + * String if one is found (quotations omitted) + */ + protected function quotedString($stopchars) { + $tok = $this->scanner->current(); + if ($tok == '"' || "'") { + $this->scanner->next(); + $ret = $this->scanner->charsUntil($tok . $stopchars); + if ($this->scanner->current() == $tok) { + $this->scanner->next(); + } + else { + // Parse error because no close quote. + $this->parseError("Expected %s, got %s", $tok, $this->scanner->current()); + } + return $ret; + } + return FALSE; } + /** * Handle a CDATA section. */ |