Package freemarker.template.utility

Class NormalizeNewlines

java.lang.Object
freemarker.template.utility.NormalizeNewlines
All Implemented Interfaces:
TemplateModel, TemplateTransformModel
public class NormalizeNewlines extends Object implements TemplateTransformModel

Transformer that supports FreeMarker legacy behavior: all newlines appearing within the transformed area will be transformed into the platform's default newline. Unlike the old behavior, however, newlines generated by the data model are also converted. Legacy behavior was to leave newlines in the data model unaltered.

Usage:
From java:

 SimpleHash root = new SimpleHash();

 root.put( "normalizeNewlines", new freemarker.template.utility.NormalizeNewlines() );

 ...

From your FreeMarker template:

 <transform normalizeNewlines>
   <html>
   <head>
   ...
   <p>This template has all newlines normalized to the current platform's
   default.</p>
   ...
   </body>
   </html>
 </transform>

  • Constructor Details

    • NormalizeNewlines

      public NormalizeNewlines()

  • Method Details

    • getWriter

      public Writer getWriter​(Writer out, Map args)
      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.

      This method should not throw RuntimeException, nor IOException that wasn't caused by writing to the output. Such exceptions should be catched inside the method and wrapped inside a TemplateModelException. (Note that setting Configuration.setWrapUncheckedExceptions(boolean) to true can mitigate the negative effects of implementations that throw RuntimeException-s.)

      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. Though it's recommended to work with TemplateModel-s directly.)
      Returns:
      The Writer to which the engine will write the content to transform, or null if the transform does not support nested content (body). The returned Writer may implements the TransformControl interface if it needs advanced control over the evaluation of the nested content. FreeMarker will call Writer.close() after the transform end-tag. Writer.close() must not close the Writer received as the out parameter (so if you are using a FilterWriter, you must override FilterWriter.close(), as by default that closes the wrapped Writer). Since 2.3.27 its also allowed to return the out writer as is, in which case it won't be closed.

    • transform

      public void transform​(Reader in, Writer out) throws IOException
      Performs newline normalization on FreeMarker output.
      Parameters:
      in - the input to be transformed
      out - the destination of the transformation
      Throws:
      IOException