From 362a791650858eea3b79e154a218630c7a4fdbea Mon Sep 17 00:00:00 2001
From: Daniil Baturin <daniil@baturin.org>
Date: Thu, 17 May 2018 06:51:44 +0200
Subject: T646: prevent convertors from overwriting existing node.def files.

---
 Makefile                           |  2 +-
 scripts/build-command-op-templates | 20 ++++++++++++++++----
 scripts/build-command-templates    |  9 +++++++--
 3 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index d1ac73c2f..cec6d7076 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,7 @@ op_mode_definitions:
 	rm -f $(OP_TMPL_DIR)/monitor/node.def
 
 .PHONY: all
-all: interface_definitions op_mode_definitions
+all: clean interface_definitions op_mode_definitions
 
 .PHONY: clean
 clean:
diff --git a/scripts/build-command-op-templates b/scripts/build-command-op-templates
index 865590c2c..25f03cf91 100755
--- a/scripts/build-command-op-templates
+++ b/scripts/build-command-op-templates
@@ -169,8 +169,13 @@ def process_node(n, tmpl_dir):
         if debug:
           print("Processing node {}".format(name))
 
-        with open(os.path.join(make_path(my_tmpl_dir), "node.def"), "w") as f:
-            f.write(make_node_def(props, command))
+        nodedef_path = os.path.join(make_path(my_tmpl_dir), "node.def")
+        if not os.path.exists(nodedef_path):
+            with open(nodedef_path, "w") as f:
+                f.write(make_node_def(props, command))
+        else:
+           # Something has already generated this file
+           pass
 
         if children is not None:
             inner_nodes = children.iterfind("*")
@@ -182,14 +187,21 @@ def process_node(n, tmpl_dir):
 
         os.makedirs(make_path(my_tmpl_dir), exist_ok=True)
 
-        with open(os.path.join(make_path(my_tmpl_dir), "node.def"), "w") as f:
-            f.write('help: {0}\0'.format(props['help']))
+        nodedef_path = os.path.join(make_path(my_tmpl_dir), "node.def")
+        if not os.path.exists(nodedef_path):
+            with open(nodedef_path, "w") as f:
+                f.write('help: {0}\n'.format(props['help']))
+        else:
+            # Something has already generated this file
+            pass
 
+        # Create the inner node.tag part
         my_tmpl_dir.append("node.tag")
         os.makedirs(make_path(my_tmpl_dir), exist_ok=True)
         if debug:
             print("Created path for the tagNode: {}".format(make_path(my_tmpl_dir)), end="")
 
+        # Not sure if we want partially defined tag nodes, write the file unconditionally
         with open(os.path.join(make_path(my_tmpl_dir), "node.def"), "w") as f:
             f.write(make_node_def(props, command))
 
diff --git a/scripts/build-command-templates b/scripts/build-command-templates
index a99f317d7..88223ea80 100755
--- a/scripts/build-command-templates
+++ b/scripts/build-command-templates
@@ -265,8 +265,13 @@ def process_node(n, tmpl_dir):
         props["tag"] = "True"
 
 
-    with open(os.path.join(make_path(my_tmpl_dir), "node.def"), "w") as f:
-        f.write(make_node_def(props))
+    nodedef_path = os.path.join(make_path(my_tmpl_dir), "node.def")
+    if not os.path.exists(nodedef_path):
+        with open(nodedef_path, "w") as f:
+            f.write(make_node_def(props))
+    else:
+        # Something has already generated that file
+        pass
 
 
     if node_type == "node":
-- 
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