function Tokenizer::attribute

Parse attributes from inside of a tag.

Parameters

string[] $attributes:

Return value

bool

Throws

ParseError

1 call to Tokenizer::attribute()

Tokenizer::tagName in vendor/masterminds/html5/src/HTML5/Parser/Tokenizer.php

Consume a tag name and body. See section 8.2.4.10.

File

vendor/masterminds/html5/src/HTML5/Parser/Tokenizer.php, line 462

Class

Tokenizer

The HTML5 tokenizer.

Namespace

Masterminds\HTML5\Parser

Code

protected function attribute(&$attributes) {
    $tok = $this->scanner
        ->current();
    if ('/' == $tok || '>' == $tok || false === $tok) {
        return false;
    }
    if ('<' == $tok) {
        $this->parseError("Unexpected '<' inside of attributes list.");
        // Push the < back onto the stack.
        $this->scanner
            ->unconsume();
        // Let the caller figure out how to handle this.
        throw new ParseError('Start tag inside of attribute.');
    }
    $name = strtolower($this->scanner
        ->charsUntil("/>=\n\f\t "));
    if (0 == strlen($name)) {
        $tok = $this->scanner
            ->current();
        $this->parseError('Expected an attribute name, got %s.', $tok);
        // Really, only '=' can be the char here. Everything else gets absorbed
        // under one rule or another.
        $name = $tok;
        $this->scanner
            ->consume();
    }
    $isValidAttribute = true;
    // Attribute names can contain most Unicode characters for HTML5.
    // But method "DOMElement::setAttribute" is throwing exception
    // because of it's own internal restriction so these have to be filtered.
    // see issue #23: https://github.com/Masterminds/html5-php/issues/23
    // and http://www.w3.org/TR/2011/WD-html5-20110525/syntax.html#syntax-attribute-name
    if (preg_match("/[\x01-,\\/;-@[-^`{-]/u", $name)) {
        $this->parseError('Unexpected characters in attribute name: %s', $name);
        $isValidAttribute = false;
    }
    elseif (preg_match('/^[0-9.-]/u', $name)) {
        $this->parseError('Unexpected character at the begining of attribute name: %s', $name);
        $isValidAttribute = false;
    }
    // 8.1.2.3
    $this->scanner
        ->whitespace();
    $val = $this->attributeValue();
    if ($isValidAttribute) {
        $attributes[$name] = $val;
    }
    return true;
}