tests: Convert sodepends build tool from Perl to Python.

[mirror_ovs.git] / build-aux / sodepends.py

diff --git a/build-aux/sodepends.py b/build-aux/sodepends.py
new file mode 100755 (executable)
index 0000000..90cfaa0
--- /dev/null
+++ b/build-aux/sodepends.py
@@ -0,0 +1,67 @@
+#! /usr/bin/env python
+
+# Copyright (c) 2008, 2011, 2017 Nicira, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from build import soutil
+import sys
+
+
+def sodepends(include_dirs, filenames, dst):
+    ok = True
+    print("# Generated automatically -- do not modify!    "
+          "-*- buffer-read-only: t -*-")
+    for toplevel in sorted(filenames):
+        # Skip names that don't end in .in.
+        if not toplevel.endswith('.in'):
+            continue
+
+        # Open file.
+        fn = soutil.find_file(include_dirs, toplevel)
+        if not fn:
+            ok = False
+            continue
+        try:
+            outer = open(fn)
+        except IOError as e:
+            sys.stderr.write("%s: open: %s\n" % (fn, e.strerror))
+            ok = False
+            continue
+
+        dependencies = []
+        while True:
+            line = outer.readline()
+            if not line:
+                break
+
+            name = soutil.extract_include_directive(line)
+            if name:
+                if soutil.find_file(include_dirs, name):
+                    dependencies.append(name)
+                else:
+                    ok = False
+
+        dst.write("\n%s:" % toplevel[:-3])
+        for s in [toplevel] + sorted(dependencies):
+            dst.write(' \\\n\t%s' % s)
+        dst.write('\n')
+        for s in [toplevel] + sorted(dependencies):
+            dst.write('%s:\n' % s)
+    return ok
+
+
+if __name__ == '__main__':
+    include_dirs, args = soutil.parse_include_dirs()
+    error = not sodepends(include_dirs, args, sys.stdout)
+    sys.exit(1 if error else 0)