From 4696a159ef28a3d32c47a2aa4d01963c47b85cb6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@webrtc.org>
Date: Thu, 28 Sep 2017 13:22:57 +0200
Subject: [PATCH] header_usage.sh: Keep leading directory for grep.
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Makes the script a bit more accurate in identifying place-holder
header files.

Bug: None
Change-Id: Iba13562aed0d40bffef9c25d7345f3bb8af16c29
No-Try: true
Reviewed-on: https://webrtc-review.googlesource.com/4381
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20357}
---
 rtc_tools/header_usage.sh | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/rtc_tools/header_usage.sh b/rtc_tools/header_usage.sh
index 58d85024dd..899b2fcf97 100755
--- a/rtc_tools/header_usage.sh
+++ b/rtc_tools/header_usage.sh
@@ -16,8 +16,20 @@
 #
 # Headers close to the top of the list are candidates for removal.
 
+# If the name includes at most one directory, keep name unchanged,
+# otherwise strip directories. Needed to work with relative #includes
+# which are used in some parts of the tree, while still avoiding,
+# e.g., api/foo.h to match includes of pc/foo.h.
+simplify_name () {
+  if expr "$1" : '.*/.*/' > /dev/null ; then
+    basename "$1"
+  else
+    echo "$1"
+  fi
+}
+
 git ls-files '*.h' '*.hpp' | while read header ; do
-  name="$(basename "${header}")"
+  name="$(simplify_name "${header}")"
   count="$(git grep -l -F  "${name}" \
            | grep -v -e '\.gn' -e '\.gyp'  \
            | wc -l)"