parseSelectors returning null

tgx — Wed, 03 Nov 2021 15:12:43 -0000

Hi, having some trouble with parseSelectors.
Mostly following the example in the documentation:

        InputSource source = new InputSource(new StringReader(css));
        CSSOMParser parser = new CSSOMParser(new SACParserCSS3());
        SelectorList selectorList = parser.parseSelectors(source);

Where css is a simple string eg div { background-color: black; }

But while parser.parseStyleSheet operation is working, parseSelectors always returns null whatever css i try. Any tips ?

What to use: HTMLUnit-Cssparser or CSSparser?

LeO — Wed, 18 Aug 2021 09:21:27 -0000

Hi,

since there exists on github CSSParser with HtmlUnit (https://github.com/HtmlUnit/htmlunit-cssparser) I recongize that the classes are not compatible to each other. The code for inlining CSS won't work nor if I want to use the individual CSSParseException (from the Introduction).

Is there a migration guide? Is the current repro updated as well?

thx
leo

Validating CSS

Darren F Hurt — Thu, 28 Feb 2019 12:24:42 -0000

I have downloaded CSSParser and hoped(or hope even) to use it to 'poperly'validate CSS (CSS 3).
I currently use the Jigsaw web service and interpret the SOAP responses, but what I really want is a library to embed in my code (which is in fact an Eclipse plugin in this case) rather than use a web service.
The trouble is though that it doesn't seem that CSSParser validates beyond basic syntactical constructs.
For example, if I have a rule cursor: hand , then Jigsaw tells me this is incorrect (similarly other inappropriate values for rules), and also gives warnings for unknown or browser specific rule names. In contrast, CSSParser seems to be letting these through without even a warning.
Is this expected behavior or am I missing something (e.g. a configuration or a dependency jar)?

java.util.EmptyStackException

Hieu Rocker — Mon, 25 Jun 2018 08:42:11 -0000

Okay, I found out that CSSOMParser is not threadsafed. Fixed by using separate CSSOMParser instance each time.

java.util.EmptyStackException

Hieu Rocker — Mon, 25 Jun 2018 04:24:12 -0000

I'm getting the same issue. But not sure what was your ClassLoader issue. I don't see any ClassLoader here.

@Hayri: can you give more details?

Comments handling in CSSParser Vs Browser behavior

.Maui — Wed, 25 Apr 2018 10:11:34 -0000

I have updated CSSParser from version 0.9.3 to version 0.9.5.
The issue hasn't been solved yet.

There are no news yet?

Thanks.

Thread safety

Joseph Naegele — Fri, 06 Apr 2018 15:01:48 -0000

Hello,

I see that the CSSOMParser constructor is synchronized, however it's not immediately apparent that any of its methods are thread-safe. Is this library thread safe or do I need to synchronize access to parseStylesheet()?

Thanks

Comments handling in CSSParser Vs Browser behavior

Asiya — Mon, 27 Nov 2017 06:34:52 -0000

Is this issue resolved ? or Do you require solution in the form of javacc parser generated file ? if so can you share the procedure for generation and share that file ?

Comments handling in CSSParser Vs Browser behavior

Aniv — Wed, 07 Jun 2017 18:34:12 -0000

Is the above issue fixed, please let us know because it helps me a lot.

Thanks in advance..

Comments handling in CSSParser Vs Browser behavior

Asiya — Fri, 10 Mar 2017 10:33:52 -0000

is the following changes in SACParserCSS3.java > styleDeclaration() works for above case ?

final public void styleDeclaration() throws ParseException {
    switch ((jj_ntk==-1)?jj_ntk_f():jj_ntk) {
    case IDENT:
    case ASTERISK:{
      declaration();
      break;
      }
    default:
      jj_la1[89] = jj_gen;
      ;
    }
    label_58:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk_f():jj_ntk) {
      case SEMICOLON:{
        ;
        break;
        }
      default:
        jj_la1[90] = jj_gen;
        break label_58;
      }
      jj_consume_token(SEMICOLON);
      label_59:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk_f():jj_ntk) {
        case S:{
          ;
          break;
          }
        default:
          jj_la1[91] = jj_gen;
          break label_59;
        }
        jj_consume_token(S);
      }
      switch ((jj_ntk==-1)?jj_ntk_f():jj_ntk) {
      case IDENT:
      case ASTERISK:{
        declaration();
        break;
        }
      **/* FIX : To handle single line comments */           
      case SLASH:{
        error_skipdecl();  
        break;
      }**
      default:
        jj_la1[92] = jj_gen;
        ;
      }
    }
  }

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parseSelectors returning null

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