From 206297a71eff7d113fbfbc70009caf206bb689b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaakko=20Kera=CC=88nen?= <jaakko.keranen@iki.fi>
Date: Thu, 28 Jul 2016 19:19:55 +0300
Subject: [PATCH] Cleanup|CMake: Tweaked source file merging script

---
 doomsday/cmake/merge_sources.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doomsday/cmake/merge_sources.py b/doomsday/cmake/merge_sources.py
index c1fa43672f..189413997e 100755
--- a/doomsday/cmake/merge_sources.py
+++ b/doomsday/cmake/merge_sources.py
@@ -7,17 +7,22 @@
 usings = set()
 code = []
 
+# Read and process all input source files.
 for fn in sys.argv[2:]:
     preamble = True
     in_body = False
     if_level = 0
     source = codecs.open(fn, 'r', 'utf-8').read()
     for line in source.split(u'\n'):
+        # Strip BOMs.
         if line.startswith(BOM):
             line = line[1:]
         original_line = line.rstrip()
         line = line.strip()
+        # Ignore empty lines and single-line comments.
         if len(line) == 0: continue
+        if line.startswith(u'//'): continue
+        # Keep track of define blocks, they will be included as-is.
         if line.startswith(u'#if'):
             if_level += 1
         elif line.startswith(u'#endif'):
@@ -51,6 +56,7 @@
 
 NL = u'\n'
 
+# Write the merged source file.
 out_file = codecs.open(sys.argv[1], 'w', 'utf-8')
 out_file.write(BOM) # BOM
 # Merged preamble.