# Add path function: check if path exists in $PATH, only then prepend the
# specified path to PATH
add_to_path() {
    if [[ ! -z $1 && -d $1 && ":$PATH:" != *":$1:"* ]]; then
        export PATH=$1:$PATH
    fi
}

# Define the colors used by the prompt
if [[ ! -z $TERM && "$TERM" != "dumb" ]]
then
    T_B=$(tput setaf 4) # Blue
    T_G=$(tput setaf 2) # Green
    T_Y=$(tput setaf 3) # Yellow
    T_S=$(tput sgr0)    # Reset
else
    # We've probably been invoked by an SSH command, there's no terminal
    # to deal with. Don't bother coloring the prompt.
    T_B=''
    T_G=''
    T_Y=''
    T_S=''
fi

# Import the Git prompt shell functions. These can be found
# @github:git/git/contrib/completion/git_prompt.sh
if [ -f $HOME/.git_prompt.sh ]; then
    source $HOME/.git_prompt.sh
    export PS1='\[$T_B\]\u@\h \[$T_S\][\[$T_G\]$(smartwd)$(__git_ps1 " \[$T_Y\](%s)")\[$T_S\]]\$ '
else
    export PS1='\[$T_B\]\u@\h \[$T_S\][\[$T_G\]$(smartwd)\[$T_S\]]\$ '
fi

# Add $HOME/bin to PATH
add_to_path $HOME/bin

# Add ls coloring
# Don't bother if LS_COLORS is already set
if [[ -z $LS_COLORS && -f $HOME/.bashrc.lscolors ]]; then
    source $HOME/.bashrc.lscolors
fi

# Source the common aliases across systems
if [[ -f $HOME/.bashrc.aliases ]]; then
    source $HOME/.bashrc.aliases
fi

# Keep system specific aliases in a seperate file called .aliases
# If .aliases exists it will envoked by the next line:
if [ -f $HOME/.aliases ]; then
    source $HOME/.aliases 
fi