install.zsh

#!/bin/zsh

files=()

RED='\e[0;31m'
GREEN='\e[0;32m'
YELLOW='\e[0;33m'
RESET='\e[0m'

get_files() {
    find . ! '(' -path '*/.git' -prune ')' \
        ! -path ./install.zsh \
        ! -path ./README.markdown \
        -type f \
        -print0
}

link_file() {
    file="$1"
    dirname=$(dirname "$file")
    echo $file
    if [[ ! -d $HOME/$dirname ]]
    then
        mkdir -p "$HOME/$dirname"
    fi

    # Use hardlink in Cygwin since NTFS does not support symbolic link for file
    if [[ $OSTYPE == cygwin ]]
    then
        ln "$PWD/$file" "$HOME/$file"
    else
        ln -s "$PWD/$file" "$HOME/$file"
    fi
}

cd `dirname $0`
git submodule update --init

while IFS= read -r -d '' file
do
    # Strip the "./" prefix
    files+=("${file:2}")
done < <(get_files)

for file in "${files[@]}"
do
    if [[ ! -e $HOME/$file ]]
    then
        echo -e "${GREEN}Linking${RESET} ~/$file"
        link_file "$file"
        continue
    fi

    if cmp -s "$HOME/$file" "$file"
    then
        echo -e "${GREEN}Identical${RESET} ~/$file"
        rm -rf "$HOME/$file"
        link_file "$file"
    else
        echo -n "Overwrite ~/$file? [yn] "
        while read -s -r answer
        do
            if [[ $answer == [YyNn] ]]
            then
                [[ $answer == [Yy] ]] && overwrite=0
                [[ $answer == [Nn] ]] && overwrite=1
                break
            fi
        done

        if [[ $overwrite == 0 ]]
        then
            echo -e "\n${RED}Renaming${RESET} ~/$file to ~/$file.original"
            mv "$HOME/$file" "$HOME/$file.original"
            echo -e "\n${GREEN}Linking${RESET} ~/$file"
            link_file "$file"
        else
            echo -e "\n${YELLOW}Skipping${RESET} ~/$file"
        fi
    fi
done

# vim: set ft=sh: