#!/bin/sh

# Usage: add this file to your project's .git/hooks directory. Rename it to

# just 'pre-commit'.

# Now, when you change some files in repository and try to commit these

# changes, git will run this script right before commit. Cppcheck will scan

# changed/new files in repository. If it finds some issues, script returns with

# exit code 1, rejecting commit. Otherwise, script returns 0, and you can

# actually commit your changes.

#

# Example:

# $ cat hello.c

# int main() {

# int *s = malloc(10);

# }

# $ git add hello.c

# $ git commit

# Checking hello.c...

# [hello.c:3]: (error) Memory leak: s

# [hello.c:2]: (error) The allocated size 10 is not a multiple of the underlying type's size.

#

# $ vim hello.c

# $ cat hello.c

# int main() {

# }

# $ git add hello.c

# $ git commit

# Checking hello.c...

# $

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

# We should pass only added or modified C/C++ source files to cppcheck.

changed_files=$(git diff-index --cached $against | \

grep -E '[MA] .*\.(c|cpp|cc|cxx)$' | cut -f 2)

if [ -n "$changed_files" ]; then

cppcheck --error-exitcode=1 $changed_files

exit $?

fi

exit 0