How to remove a newline from template?

[Crend King]

Frequently I run into this problem. I want to generate a line of text if the text is not empty. If it is empty, do not generate the line. Illustration template:

namespace @classSpec.getNamespace()

@classSpec.getComment()
class @classSpec.getName() {
  ...
}

If @classSpec.getComment() returns meaningful comment text, the result looks like

namespace com.example

// this is comment
class MyClass {
  ...
}

But if there is no comment, it will be

namespace com.example


class MyClass {
  ...
}

Notice the extra empty line? I do not want it. Currently the solution is to write template as

namespace @classSpec.getNamespace()

@classSpec.getComment()class @classSpec.getName() {
  ...
}

and make sure the getComment() will append a "\n" to the return value. This makes the template much less readable. Also, imagine I need to generate a function with multiple parameters in a for loop. If each parameter requires multiple lines of template code, I need to make them all written in one line. Otherwise, the result file will have function like

function myFunction(
  String stringParam,
  Integer intParam,
  Long longParam
)

The core problem is, the template file does not only containe scripts, but also raw text to be written in the output. For script part, we want newlines and indentations. We want the space to be trimmed just like what compilers usually do. But for raw text, we want the spaces to be exact as specified in the file. I feel we need a bit more raw text control mechanism to reconcile the two parts.

Specific to this case, is there some special symbol to treat multiple lines as single line in the output? For example, like if we can write

namespace @classSpec.getNamespace()

@classSpec.getComment()\\
class @classSpec.getName() {
  ...
}

Thanks!

[Robert Lebel]

I have the same problem. Anyone has a suggestion?

[green]

Unfortunately Rythm does not have consistent processing on blank lines and white space at the moment. I would rather suggest you rely on other formatting tool to calibrate your output. See http://stackoverflow.com/questions/3468122/java-library-for-code-beautify-format

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