From 3e61278c4e5469d5aa5fc1da7aa5c7d6345b3a3f Mon Sep 17 00:00:00 2001
From: Vijay Kumar Banerjee <vijay@rtems.org>
Date: Tue, 2 Mar 2021 19:27:06 -0700
Subject: Add script to import files from lwip upstream

---
 file-import.yaml      |   2 +
 lwip-to-rtems.py      | 107 ++++++++++++++++++++++++++++++++++++++++++++++++++
 lwip/test/fuzz/fuzz.c |   0
 3 files changed, 109 insertions(+)
 create mode 100644 file-import.yaml
 create mode 100755 lwip-to-rtems.py
 create mode 100644 lwip/test/fuzz/fuzz.c

diff --git a/file-import.yaml b/file-import.yaml
new file mode 100644
index 0000000..b667c63
--- /dev/null
+++ b/file-import.yaml
@@ -0,0 +1,2 @@
+files-to-import:
+  - test/fuzz/fuzz.c
diff --git a/lwip-to-rtems.py b/lwip-to-rtems.py
new file mode 100755
index 0000000..72ac41d
--- /dev/null
+++ b/lwip-to-rtems.py
@@ -0,0 +1,107 @@
+#! /usr/bin/env python
+#
+#  Copyright (c) 2021 Vijay Kumar Banerjee <vijay@rtems.org>.
+#
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions
+#  are met:
+#  1. Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#  2. Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from __future__ import print_function
+
+import os
+import sys
+import getopt
+import yaml
+from shutil import copyfile
+from pathlib import Path
+
+isForward = True
+isEarlyExit = False
+statsReport = False
+LWIP_DIR = 'lwip'
+LWIP_UPSTREAM_DIR = './lwip-upstream'
+
+def usage():
+    print("lwip-to-rtems.py [args]")
+    print("  -?|-h|--help      print this and exit")
+    print("  -R|--reverse      default origin -> lwip, reverse that")
+    print("  -r|--rtems        lwip directory (default: '.')")
+    print("  -l|--lwip         lwip upstream directory (default: 'lwip-upstream')")
+
+# Parse the arguments
+def parseArguments():
+    global isForward, isEarlyExit, statsReport
+    try:
+        opts, args = getopt.getopt(sys.argv[1:],
+                                   "?hdDembSRr:f:cv",
+                                   [ "help",
+                                     "help",
+                                     "reverse"
+                                     "stats"
+                                     "rtems="
+                                     "lwip="
+                                     "verbose" ])
+    except getopt.GetoptError as err:
+        # print help information and exit:
+        print(str(err)) # will print something like "option -a not recognized"
+        usage()
+        sys.exit(2)
+    for o, a in opts:
+        if o in ("-h", "--help", "-?"):
+            usage()
+            sys.exit()
+        elif o in ("-S", "--stats"):
+            statsReport = True
+        elif o in ("-R", "--reverse"):
+            isForward = False
+        elif o in ("-r", "--rtems"):
+            LWIP_DIR = a
+        elif o in ("-l", "--lwip"):
+            LWIP_UPSTREAM_DIR = a
+        else:
+            assert False, "unhandled option"
+
+parseArguments()
+
+print("lwip Directory:            %s" % (LWIP_DIR))
+print("lwip upstream Directory:           %s" % (LWIP_UPSTREAM_DIR))
+print("Direction:                   %s" % (("reverse", "forward")[isForward]))
+
+
+def copyFiles(isforward):
+    if (isforward):
+        config_file = open('file-import.yaml', 'r').read()
+        files = yaml.full_load(config_file)
+        src_dir = os.path.abspath(LWIP_UPSTREAM_DIR)
+        print("Files Imported:")
+        for f in files['files-to-import']:
+            dst_dir = os.path.join(os.path.abspath(LWIP_DIR), *f.split('/')[:-1])
+            dst_file = os.path.join(dst_dir, f.split('/')[-1])
+            try:
+                os.makedirs(dst_dir)
+            except FileExistsError:
+                pass
+            if not os.path.exists(dst_file):
+                Path(dst_file).touch()
+                print(dst_file)
+                copyfile(str(os.path.join(src_dir, f)),
+                         str(dst_file))
+
+copyFiles(isForward)
diff --git a/lwip/test/fuzz/fuzz.c b/lwip/test/fuzz/fuzz.c
new file mode 100644
index 0000000..e69de29
-- 
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