[XEN PATCH v5 15/16] build,include: rework compat-build-source.py

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

Improvement are:
- give the path to xlat.lst as argument
- include `grep -v` in compat-build-source.py script, we don't need to
  write this in several scripted language.

No changes in final compat/%.h headers.

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---

Notes:
    v5:
    - removed "have 'xlat.lst' path as a variable" from the patch.
    
    v4:
    - new patch

 xen/include/Makefile             | 3 +--
 xen/tools/compat-build-source.py | 8 +++++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/xen/include/Makefile b/xen/include/Makefile
index 2a10725d689b..537085b82793 100644
--- a/xen/include/Makefile
+++ b/xen/include/Makefile
@@ -68,8 +68,7 @@ compat/%.i: compat/%.c Makefile
 
 compat/%.c: public/%.h xlat.lst Makefile 
$(BASEDIR)/tools/compat-build-source.py
        mkdir -p $(@D)
-       grep -v 'DEFINE_XEN_GUEST_HANDLE(long)' $< | \
-       $(PYTHON) $(BASEDIR)/tools/compat-build-source.py >$@.new
+       $(PYTHON) $(BASEDIR)/tools/compat-build-source.py xlat.lst <$< >$@.new
        mv -f $@.new $@
 
 compat/.xlat/%.h: compat/%.h compat/.xlat/%.lst $(BASEDIR)/tools/get-fields.sh 
Makefile
diff --git a/xen/tools/compat-build-source.py b/xen/tools/compat-build-source.py
index c664eb85e633..c7fc2c53db61 100755
--- a/xen/tools/compat-build-source.py
+++ b/xen/tools/compat-build-source.py
@@ -12,7 +12,11 @@ pats = [
  [ r"XEN_GUEST_HANDLE(_[0-9A-Fa-f]+)?", r"COMPAT_HANDLE" ],
 ];
 
-xlatf = open('xlat.lst', 'r')
+try:
+    xlatf = open(sys.argv[1], 'r')
+except IndexError:
+    print('missing path to xlat.lst argument')
+    sys.exit(1)
 for line in xlatf.readlines():
     match = re.subn(r"^\s*\?\s+(\w*)\s.*", r"\1", line.rstrip())
     if match[1]:
@@ -24,6 +28,8 @@ for pat in pats:
     pat[0] = re.compile(pat[0])
 
 for line in sys.stdin.readlines():
+    if 'DEFINE_XEN_GUEST_HANDLE(long)' in line:
+        continue
     for pat in pats:
         line = re.sub(pat[0], pat[1], line)
     print(line.rstrip())
-- 
Anthony PERARD