Guard headers tool.

1 files changed, 90 insertions, 0 deletions

diff --git a/tools/distrib/guard_headers.sh b/tools/distrib/guard_headers.sh
new file mode 100755
index 0000000000..2a54cf821a
--- /dev/null
+++ b/tools/distrib/guard_headers.sh
@@ -0,0 +1,90 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * 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.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# 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.
+
+
+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++