Make the watermark conditional on version number

If the version number has a qualifier in it ('-pre' or '-rc'), then put
a draft watermark on all pages

Signed-off-by: Grant Likely <[email protected]>

Author: glikely

source/conf.py

@@ -60,7 +60,7 @@
 # The short X.Y version.
 version = u'0.1-pre1'
 # The full version, including alpha/beta/rc tags.
-release = u'0.1-pre1-%s' % time.strftime('%Y%m%d')
+release = u'%s-%s' % (version, time.strftime('%Y%m%d'))
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -228,13 +228,15 @@
 # The font size ('10pt', '11pt' or '12pt').
 #'pointsize': '10pt',
 
-# Additional stuff for the LaTeX preamble.
-  'preamble': '\\usepackage{draftwatermark}\\SetWatermarkScale{.45}\\SetWatermarkText{DRAFT v%s}' % release
-
 # Latex figure (float) alignment
 #'figure_align': 'htbp',
 }
 
+# Release numbers with a qualifier (ex. '-rc', '-pre') get a watermark.
+if '-' in version:
+    latex_elements['preamble'] = '\\usepackage{draftwatermark}\\SetWatermarkScale{.45}\\SetWatermarkText{DRAFT v%s}' % release
+
+
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).