Script for Git pre-commit hook

pre-commit.sh

#!/bin/bash

# to add a protected file, please open protected_file.txt and append a path into
# the file, relative to the project directory.

# ========================================
# defaults
# ========================================
abort_commit_msg="Aborting commit"

text=""
set_text() {
    text=$(echo -e "\n$1\n\nAre you sure about this? [y/N] ")
}

# ========================================
# checking protected files
# ========================================

# get current dir, to get protected files
current_dir=$( cd "$(dirname "${BASH_SOURCE}")" ; pwd -P )
protected_files="$current_dir/protected_files.txt"

# get staged files
staged_files=$(git diff --cached --name-only)

# check staged for protected
protected_stage=""

while read -r line; do
    if [[ -n "$line" ]]; then
        match=$(echo "$staged_files" | grep -o -P "$line")
        
        if [[ -n "$match" ]]; then
            protected_stage=$(echo -e "$protected_stage\n- $match")
        fi
    fi
done < "$protected_files"

# allow input now
exec < /dev/tty

if [[ -n $protected_stage ]]; then
    set_text "You are attempting to commit one or more of the protected files.$protected_stage"
    read -p "$text" proceed_with_commit
    
    if [[ "$proceed_with_commit" != 'y' ]]; then
        echo "$abort_commit_msg"
        exit 1
    fi
fi

# ========================================
# checking current branch
# ========================================
current_branch=$(git rev-parse --abbrev-ref HEAD)
if [[ "$current_branch" == 'test' ]]; then
    set_text "You are attempting to commit into the \"test\" branch."
    read -p "$text" proceed_with_commit
    
    if [[ "$proceed_with_commit" != 'y' ]]; then
        echo "$abort_commit_msg"
        exit 1
    fi
fi

setup_hooks.sh

#!/bin/bash

current_dir=$( cd "$(dirname "${BASH_SOURCE}")" ; pwd -P )
cd "$current_dir/../.git/hooks"

declare -a git_hooks=(
    "applypatch-msg"
    "pre-applypatch"
    "post-applypatch"
    "pre-commit"
    "prepare-commit-msg"
    "commit-msg"
    "post-commit"
    "pre-rebase"
    "post-checkout"
    "post-merge"
    "pre-push"
    "pre-receive"
    "update"
    "post-receive"
    "post-update"
    "push-to-checkout"
    "pre-auto-gc"
    "post-rewrite"
)

for hook in "${git_hooks[@]}"; do
    # check if the hook exists
    if [[ -f "../../script/hooks/$hook.sh" ]]; then
        # pre defined content to execute hook
        content="#!/bin/bash
        
        current_dir=\$( cd \"\$(dirname \"\${BASH_SOURCE}\")\" ; pwd -P )
        cd \"\$current_dir/../../\"
        
        ./script/hooks/$hook.sh"
        
        # output into the sh script
        echo "$content" | sed 's/^ *//' > "./$hook"
        chmod +x "./$hook"
        chmod +x "../../script/hooks/$hook.sh"
        echo "Set up $hook hook"
    
    # check if we have unused hook (exist in .git/hook, but not in hook)
    elif [[ (! -f "../../script/hooks/$hook.sh") && (-f "./$hook") ]]; then
        rm "./$hook"
        echo "Remove unused $hook hook"
    fi
done