pre-commit git hook for iOS projects

pre-commit

#----------------------------------------------------------------
# PREVENT YOUR CODEBASE GETTING SPOILED BY DEVELOPERS
# - YOU NEED TO THIS pre-commit file (without any extension) 
#   at ".git/hooks/" folder.
# - THEN TRY TO PUT WRONG STYLED/LINT CODE
#----------------------------------------------------------------

branch="$(git rev-parse --abbrev-ref HEAD)"

#----------------------------------------------------------------
# RESTRICT BRANCHES FROM DIRECT PUSH
#----------------------------------------------------------------
if [ "$branch" = "master" ] || [ "$branch" = "Development" ]; then
  echo "You can't commit directly to $branch"
  exit 1
fi

#----------------------------------------------------------------
# RUN SWIFTLINT  
#----------------------------------------------------------------

# Run SwiftLint
START_DATE=$(date +"%s")

SWIFT_LINT=/usr/local/bin/swiftlint

# Run SwiftLint for given filename
run_swiftlint() {
local filename="${1}"
if [[ "${filename##*.}" == "swift" ]]; then
${SWIFT_LINT} autocorrect --path "${filename}"
${SWIFT_LINT} lint --path "${filename}"
fi
}

if [[ -e "${SWIFT_LINT}" ]]; then
echo "SwiftLint version: $(${SWIFT_LINT} version)"
# Run for both staged and unstaged files
git diff --name-only | while read filename; do run_swiftlint "${filename}"; done
git diff --cached --name-only | while read filename; do run_swiftlint "${filename}"; done
else
echo "${SWIFT_LINT} is not installed. Please install it first from https://www.github.com/realm/SwiftLint"
exit 0
fi

END_DATE=$(date +"%s")

DIFF=$(($END_DATE - $START_DATE))
echo "SwiftLint took $(($DIFF / 60)) minutes and $(($DIFF % 60)) seconds to complete."

#----------------------------------------------------------------
# BUILD XCODE PROJECT & VALIDATE 
#----------------------------------------------------------------
xcodebuild quite build -workspace <YOUR WORKSPACE>.xcworkspace -scheme <YOUR PROJECT SCHEME>
if test $? -eq 0
    then echo "Successful build"
else
    echo "Your XCode build is Failed, for scheme "
    exit 1
fi