From 8944a337eaaf3717b11e0e877c38bfec00d3b6bd Mon Sep 17 00:00:00 2001
From: yexin <yexin13@huawei.com>
Date: Mon, 30 Jul 2018 21:34:10 +0800
Subject: Fix: commit-msg hook conflicts with git-review

Fix bug that the original commit-msg hook will conflict with
the one from git-review.
Also add an option (RMWS) to CMakelists to enable autoremove
trailing whitespace when commit changes.

Change-Id: I78a34758d1cf2501814e60b403a25df40de833f9
Signed-off-by: yexin <yexin13@huawei.com>
---
 CMakeLists.txt                 | 38 ++++++++++++++++++++++++++++++++------
 scripts/git/commit-msg-hook.py |  2 +-
 scripts/git/pre-commit         | 14 ++++++++++++++
 3 files changed, 47 insertions(+), 7 deletions(-)
 create mode 100755 scripts/git/pre-commit

diff --git a/CMakeLists.txt b/CMakeLists.txt
index adb0670..e63100f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,6 +17,11 @@
 
 CMAKE_MINIMUM_REQUIRED(VERSION 2.8.11)
 PROJECT(nStack)
+
+option(RMWS    "automatically remove trailing whitespace using git pre-commit hook" OFF)
+option(WITH_SECUREC_LIB "Option description" OFF)
+option(WITH_HAL_LIB "Option description" OFF)
+
 SET(CMAKE_C_COMPILER "gcc")
 SET(EXECUTABLE_PATH ${CMAKE_CURRENT_LIST_DIR}/release/bin)
 SET(LIB_PATH_STATIC ${PROJECT_BINARY_DIR})
@@ -51,14 +56,35 @@ if(commit_template STREQUAL "")
   message(STATUS "Setting git commit template...done")
 endif()
 
-if(NOT EXISTS "${CMAKE_SOURCE_DIR}/.git/hooks/commit-msg")
-  message(STATUS "Setting git commit hook...")
-  execute_process(COMMAND ln -s ${CMAKE_SOURCE_DIR}/scripts/git/commit-msg-hook.py ${CMAKE_SOURCE_DIR}/.git/hooks/commit-msg)
-  message(STATUS "Setting git commit hook...done")
+find_program(GIT_REVIEW git-review)
+if(NOT GIT_REVIEW)
+  if(NOT EXISTS "${CMAKE_SOURCE_DIR}/.git/hooks/commit-msg")
+    message(STATUS "git-review not found!")
+    message(STATUS "Setting git commit hook...")
+    execute_process(COMMAND ln -s ${CMAKE_SOURCE_DIR}/scripts/git/commit-msg-hook.py ${CMAKE_SOURCE_DIR}/.git/hooks/commit-msg)
+    message(STATUS "Setting git commit hook...done")
+  endif()
+else()
+  if(NOT EXISTS "${CMAKE_SOURCE_DIR}/.git/hooks/commit-msg")
+    execute_process(COMMAND git-review -s
+                    RESULT_VARIABLE  git_review_ret)
+    if(${git_review_ret} EQUAL 0)
+      file(APPEND ${CMAKE_SOURCE_DIR}/.git/hooks/commit-msg "${CMAKE_SOURCE_DIR}/scripts/git/commit-msg-hook.py $1")
+    endif()
+  else()
+    file(READ ${CMAKE_SOURCE_DIR}/.git/hooks/commit-msg contents)
+    string(FIND "${contents}" "commit-msg-hook.py" match_ret)
+    if(${match_ret} EQUAL -1)
+      file(APPEND ${CMAKE_SOURCE_DIR}/.git/hooks/commit-msg "${CMAKE_SOURCE_DIR}/scripts/git/commit-msg-hook.py $1")
+    endif()
+  endif()
 endif()
 
-option(WITH_SECUREC_LIB "Option description" OFF)
-option(WITH_HAL_LIB "Option description" OFF)
+if(RMWS)
+  message(STATUS  "Setting git pre-commit hook...")
+  execute_process(COMMAND ln -sf ${CMAKE_SOURCE_DIR}/scripts/git/pre-commit ${CMAKE_SOURCE_DIR}/.git/hooks/pre-commit)
+  message(STATUS  "Setting git pre-commit hook...done")
+endif()
 
 if(WITH_SECUREC_LIB)
   add_definitions(-DSECUREC_LIB)
diff --git a/scripts/git/commit-msg-hook.py b/scripts/git/commit-msg-hook.py
index 719ff22..9c397ed 100755
--- a/scripts/git/commit-msg-hook.py
+++ b/scripts/git/commit-msg-hook.py
@@ -123,7 +123,7 @@ with open(sys.argv[1], 'r') as commit_msg:
 
 for line in contents:
     dup = line.lstrip()
-    if dup.startswith('#'):
+    if dup.startswith('#') or dup.startswith("Change-Id") or dup.startswith("Signed-of-by"):
         continue
     if subject is True:
         ret = check_subject(line)
diff --git a/scripts/git/pre-commit b/scripts/git/pre-commit
new file mode 100755
index 0000000..58cd14f
--- /dev/null
+++ b/scripts/git/pre-commit
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+if git rev-parse --verify HEAD >/dev/null 2>&1
+then
+  against=HEAD
+else
+  # Initial commit: diff against an empty tree object
+  against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+fi
+
+# autoremove trailing whitespace
+for file in `git diff-index --check --cached $against -- | sed '/^[-+]/d' | sed -r 's/:[0-9]+:.*//' | uniq` ; do
+  sed -i 's/[ \t]*$//g' $file
+done
-- 
cgit 1.2.3-korg