1 files changed, 75 insertions, 0 deletions
diff --git a/grpc/tools/distrib/guard_headers.sh b/grpc/tools/distrib/guard_headers.sh
new file mode 100755
index 00000000..fb66e55f
--- /dev/null
+++ b/grpc/tools/distrib/guard_headers.sh
@@ -0,0 +1,75 @@
+#!/bin/bash
+# Copyright 2015 gRPC authors.
+#
+# 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.
+
+
+set -e
+
+cd `dirname $0`/../..
+
+function process_dir {
+  base_dir=$1
+  prefix=$2
+  comment_language=$3
+  (
+    cd $base_dir
+    find . -name "*.h" | while read f ; do
+      guard=${prefix}_`echo ${f#*/} | tr '[:lower:]/.-' '[:upper:]___'`
+      if [ "$comment_language" = "c++" ] ; then
+        comment="// $guard"
+      else
+        comment="/* $guard */"
+      fi
+      awk '
+        BEGIN {
+          guard = "'${guard}'";
+          comment_language = "'${comment_language}'";
+        }
+        prev ~ /^#ifndef/ && !got_first_ifndef {
+          got_first_ifndef = 1;
+          prev = "#ifndef " guard;
+        }
+        prev ~ /^#define/ && !got_first_define {
+          got_first_define = 1;
+          prev = "#define " guard;
+        }
+        NR > 1 { print prev; }
+        { prev = $0; }
+        END {
+          if (prev ~ /^#endif/) {
+            if (comment_language ~ /^c$/) {
+              print "#endif  /* " guard " */";
+            } else if (comment_language ~ /^c\+\+$/) {
+              print "#endif  // " guard;
+            } else {
+              print "ERROR: unknown comment language: " comment_language;
+            }
+          } else {
+            print "ERROR: file does not end with #endif";
+          }
+        }
+      ' "${f}" > "${f}.rewritten"
+      mv "${f}.rewritten" "${f}"
+    done
+  )
+}
+
+process_dir include/grpc GRPC c
+process_dir include/grpc++ GRPCXX c++
+process_dir src/core GRPC_INTERNAL_CORE c
+process_dir src/cpp GRPC_INTERNAL_CPP c++
+process_dir src/compiler GRPC_INTERNAL_COMPILER c++
+process_dir test/core GRPC_TEST_CORE c
+process_dir test/cpp GRPC_TEST_CPP c++
+process_dir examples GRPC_EXAMPLES c++