Utility to strip trailing space

Stores stripped dirs in the configuration so we can gradually
move to all files being stripped.

utils/trailing_space_clean.py

+#!/usr/bin/env python3
+
+import os
+from os.path import join, splitext
+
+from trailing_space_clean_config import PATHS
+
+SOURCE_EXT = (
+    # C/C++
+    ".c", ".h", ".cpp", ".hpp", ".cc", ".hh", ".cxx", ".hxx", ".inl",
+    # GLSL
+    ".glsl",
+    # Python
+    ".py",
+    # Text (also CMake)
+    ".txt", ".rst",
+)
+
+
+def is_source(filename):
+    return filename.endswith(SOURCE_EXT)
+
+
+def path_iter(path, filename_check=None):
+    for dirpath, dirnames, filenames in os.walk(path):
+        # skip ".git"
+        dirnames[:] = [d for d in dirnames if not d.startswith(".")]
+
+        for filename in filenames:
+            filepath = join(dirpath, filename)
+            if filename_check is None or filename_check(filepath):
+                yield filepath
+
+
+def path_expand(paths, filename_check=None):
+    for f in paths:
+        if not os.path.exists(f):
+            print("Missing:", f)
+        elif os.path.isdir(f):
+            yield from path_iter(f, filename_check)
+        else:
+            yield f
+
+
+def rstrip_file(filename):
+    with open(filename, "r", encoding="utf-8") as fh:
+        data_src = fh.read()
+
+    data_dst = []
+    for l in data_src.splitlines(True):
+        data_dst.append(l.rstrip() + "\n")
+
+    data_dst = "".join(data_dst)
+    len_strip = len(data_src) - len(data_dst)
+    if len_strip != 0:
+        with open(filename, "w", encoding="utf-8") as fh:
+            fh.write(data_dst)
+    return len_strip
+
+
+def main():
+    for f in path_expand(PATHS, is_source):
+        len_strip = rstrip_file(f)
+        if len_strip != 0:
+            print(f"Strip ({len_strip}): {f}")
+
+
+if __name__ == "__main__":
+    main()

utils/trailing_space_clean_config.py

+
+import os
+PATHS = (
+    "release/scripts/modules",
+    "release/scripts/startup",
+    "source/blender/bmesh",
+    "source/blender/editors/interface",
+    "source/blender/editors/transform",
+    "source/blender/python",
+)
+
+SOURCE_DIR = os.path.normpath(os.path.abspath(os.path.normpath(
+    os.path.join(os.path.dirname(__file__), "..", "..", ".."))))
+
+PATHS = tuple(os.path.join(SOURCE_DIR, p) for p in PATHS)