Need of a pseudo variable to know the relative path of a source file

[cmarchand]

When a source file is found via a <folder />, there is no way to know the relative path of the file to folder/@href

It'll be great to add a pseudo variable that we could use in a output, to reproduce the source directory structure in the output folder

[cmarchand]

Commit #040e584 solve this. Two new pseudo-variables are created :

• input-relative-file, which is the relative file path to folder/@href, or absolute file path if not applyable
• input-relative-dir, which is the relative file's parent dir path to folder/@href, or absolute file's parent dir path if not applyable

It's now possible to have the same directory structure in output than in sources :

<output>
  <folder absolute="$[outputDir]/$[input-relative-dir]"/>
  <file name="$[input-name]"/>
</output>