Bash Scripts Bootstrap

.bashrc

# Create new directory and jump inside it
# USAGE: md <new directory name>
function md() {
    mkdir "$1"
    cd "$1"
}

# Modify and re-source your .bashrc
function bashrc() {
    nano ~/.bashrc;
    source ~/.bashrc;
}

# Get the number of lines in a file
# USAGE: lines <filename>
function lines() {
   echo $(wc -l < "$1") | xargs
}

# Kill Docker container, rebuild project, and spin up new Docker container
function rebuild() {
    docker-compose down;
    
    # Replace with some other build command
    ./gradlew clean build copyEar;
    
    docker-compose up --build;
}

# Add a new alias
# USAGE: a <new alias> <command>
function a() {
    if [[ $# -ne 2 ]]
    then
        echo "USAGE: a <alias> <expression>"
        return 0
    elif [[ -n "$(alias $1 2>/dev/null)" ]]
    then
        echo "Alias already exists!"
        return 0
    fi

    echo -e "alias $1=\"$2\"
$(cat ~/.bashrc)" > ~/.bashrc
    source ~/.bashrc
    echo "Alias was added successfully!"
}

# Alias the last command run.
# DEPENDS ON a()
# USAGE: al <new alias>
function al() {
    prev_cmd=$(echo $(fc -ln -1) | xargs)
    if [[ $# -ne 1 ]]
    then
        echo "USAGE: al <alias>"
        return 0
    elif [[ -n "$(alias $1 2>/dev/null)" ]]
    then
        echo "Alias already exists!"
        return 0
    fi

    a "$1" "$prev_cmd"
}

# Creates an alias to jump to current directory
# DEPENDS ON a()
# USAGE: ad <new alias>
function ad() {
    dir=$(pwd)
    a "$1" "cd $dir"
}

# Opens a specific Wikipedia article in the user's browser
# USAGE: w -- Takes you to Wikipedia homepage
# USAGE: w <query> -- Searches Wikipedia for the query
function w() {
    wiki_url="https://www.wikipedia.org"
    if [[ $# -ne 0 ]]
    then
        # Use $* to get all args, joined by first character of $IFS (a space, by default)
        wiki_url="$wiki_url/wiki/?search=$*"
    fi
    open "$wiki_url"
}

git_utils.sh

# Checks out a branch, whether it already exists or not,
# and allows you to specify whether to set upstream (with "--up" or "^")
# USAGE: b -- List all branches
# USAGE: b <branch name> -- Checkout branch, or create a new one if it doesn't exist
function b() {
    if [ $# -eq 0 ]
    then
        git branch
    else
        branch_name="$1";
        set_upstream=false;

        # Process "--up"/"^" flag
        if [ "$1" = "--up" ] || [ "$1" = "^" ]
        then
            branch_name="$2";
            set_upstream=true;
        else
            if [ "$2" = "--up" ] || [ "$2" = "^" ]
            then
                set_upstream=true;
            fi
        fi

        # Create new branch if it doesn't exist, or check it out if it does
        if [ -z "$(git rev-parse --verify --quiet $branch_name)" ]
        then
            git checkout -b $branch_name;
        else
            git checkout $branch_name;
        fi

        # Set upstream if so specified
        if [ "$set_upstream" = "true" ]
        then
            git push --set-upstream origin $branch_name;
        fi
    fi
}

# Sets the upstream for the current branch
function up() {
    branch_name=$(git symbolic-ref --short -q HEAD);
    git push --set-upstream origin $branch_name;
}

# Delete branch(es)
# USAGE: prune <branch names separated by spaces> -- Delete specified branches
function prune() {
    for branch_name in "$@"
    do
        if [ -z "$(git rev-parse --verify --quiet $branch_name)" ]
        then
            echo "Could not delete branch $branch_name. It does not exist.";
        else
            git branch -D $branch_name;
        fi
    done
}

npm_utils.sh

# Opens a specific npm package in the user's browser
# USAGE: npmjs -- Opens npm homepage
# USAGE: npmjs <package name> -- Opens package on npm
function npmjs() {
    npm_url="https://www.npmjs.com/package"
    if [[ $# -ne 0 ]]
    then
        npm_url="$npm_url/$1"
    fi
    open "$npm_url"
}