Package freemarker.template.utility

Class StandardCompress

  • All Implemented Interfaces:
    TemplateModel, TemplateTransformModel
    public class StandardCompress
extends Object
implements TemplateTransformModel

    A filter that compresses each sequence of consecutive whitespace to a single line break (if the sequence contains a line break) or a single space. In addition, leading and trailing whitespace is completely removed.

    Specify the transform parameter single_line = true to always compress to a single space instead of a line break.

    The default buffer size can be overridden by specifying a buffer_size transform parameter (in bytes).

    Note: The compress tag is implemented using this filter

    Usage:
    From java:

     SimpleHash root = new SimpleHash();

 root.put( "standardCompress", new freemarker.template.utility.StandardCompress() );

 ...

    From your FreeMarker template:

     <transform standardCompress>
   <p>This    paragraph will have
       extraneous

 whitespace removed.</p>
 </transform>

    Output:

     <p>This paragraph will have
 extraneous
 whitespace removed.</p>

    • Constructor Detail

      • StandardCompress

        public StandardCompress()

      • StandardCompress

        public StandardCompress​(int defaultBufferSize)
        Parameters:
        defaultBufferSize - the default amount of characters to buffer

    • Method Detail

      • getWriter

        public Writer getWriter​(Writer out,
                        Map args)
                 throws TemplateModelException
        Description copied from interface: TemplateTransformModel
        Returns a writer that will be used by the engine to feed the transformation input to the transform. Each call to this method must return a new instance of the writer so that the transformation is thread-safe.
        Specified by:
        getWriter in interface TemplateTransformModel
        Parameters:
        out - the character stream to which to write the transformed output
        args - the arguments (if any) passed to the transformation as a map of key/value pairs where the keys are strings and the arguments are TemplateModel instances. This is never null. If you need to convert the template models to POJOs, you can use the utility methods in the DeepUnwrap class.
        Returns:
        a writer to which the engine will feed the transformation input, or null if the transform does not support nested content (body). The returned writer can implement the TransformControl interface if it needs advanced control over the evaluation of the transformation body.
        Throws:
        TemplateModelException