Implement 'equals starts with' ('^=') and 'equals or starts with hyph…

…enated' ('|=') selectors (#221)

* Improve detection of element in query

* style: reformat

* style: reformat

* test: multiple named selects

* Implement 'equals starts with' ('^=') and 'equals or starts with hyphenated' ('|=') selectors

---------

Co-authored-by: Tomáš Fedor <tomas.fedor3@gmail.com>
Co-authored-by: Greg Bowler <greg.bowler@g105b.com>

src/Translator.php

@@ -12,15 +12,15 @@ class Translator {
  . '|(#(?P<id>[\w-]*))'
  . '|(\.(?P<class>[\w-]*))'
  . '|(?P<sibling>\s*\+\s*)'
- . "|(\[(?P<attribute>[\w-]*)((?P<attribute_equals>[=~$*]+)(?P<attribute_value>(.+\[\]'?)|[^\]]+))*\])+"
+ . "|(\[(?P<attribute>[\w-]*)((?P<attribute_equals>[=~$|^*]+)(?P<attribute_value>(.+\[\]'?)|[^\]]+))*\])+"
  . '|(?P<descendant>\s+)'
  . '/';
 
  const EQUALS_EXACT = "=";
  const EQUALS_CONTAINS_WORD = "~=";
  const EQUALS_ENDS_WITH = "$=";
  const EQUALS_CONTAINS = "*=";
- const EQUALS_STARTS_WITH_OR_STARTS_WITH_HYPHENATED = "|=";
+ const EQUALS_OR_STARTS_WITH_HYPHENATED = "|=";
  const EQUALS_STARTS_WITH = "^=";
 
  public function __construct(
@@ -245,11 +245,24 @@ protected function convertSingleSelector(string $css):string {
  );
  break;
 
- case self::EQUALS_STARTS_WITH_OR_STARTS_WITH_HYPHENATED:
- throw new NotYetImplementedException();
+ case self::EQUALS_OR_STARTS_WITH_HYPHENATED:
+ array_push(
+ $xpath,
+ "["
+ . "@{$currentThreadItem['content']}=\"{$valueString}\" or "
+ . "starts-with(@{$currentThreadItem['content']}, \"{$valueString}-\")"
+ . "]"
+ );
+ break;
 
  case self::EQUALS_STARTS_WITH:
- throw new NotYetImplementedException();
+ array_push(
+ $xpath,
+ "[starts-with("
+ . "@{$currentThreadItem['content']}, \"{$valueString}\""
+ . ")]"
+ );
+ break;
 
  case self::EQUALS_ENDS_WITH:
  array_push(

test/phpunit/TranslatorTest.php

@@ -320,6 +320,30 @@ public function testAttributeDollarSelector() {
  );
  }
 
+ public function testAttributeEqualsOrStartsWithHypehnatedSelector() {
+ $document = new DOMDocument("1.0", "UTF-8");
+ $document->loadHTML("<div class='en'></div><div class='en-'></div><div class='en-uk'></div><div class='es'></div>");
+ $xpath = new DOMXPath($document);
+
+ $selector = new Translator("[class|=en]");
+ self::assertEquals(
+ 3,
+ $xpath->query($selector)->length
+ );
+ }
+
+ public function testAttributeStartsWithSelector() {
+ $document = new DOMDocument("1.0", "UTF-8");
+ $document->loadHTML("<div class='class1'></div><div class='foo class1'></div><div class='class1 class2'></div><div class='class2'></div>");
+ $xpath = new DOMXPath($document);
+
+ $selector = new Translator("[class^=class1]");
+ self::assertEquals(
+ 2,
+ $xpath->query($selector)->length
+ );
+ }
+
  public function testClassSelector() {
  $document = new DOMDocument("1.0", "UTF-8");
  $document->loadHTML(Helper::HTML_COMPLEX);