case "$-" in
    *i*) ;;
      *) return ;;
esac

PS1='\[\e[33m\]\W\[\e[0m\]: '

#set -o nounset
set -o pipefail

shopt -s checkwinsize
shopt -s dotglob
shopt -s histappend
shopt -s nullglob
shopt -s nocaseglob

_os=''

detect_os() {
    command -v uname > /dev/null           \
        && [ "$( uname -o )" == 'Cygwin' ] \
        && _os='Cygwin'                    \
        && return 0

    [ -r /etc/os-release ]                              \
        && _os="$( . /etc/os-release && echo "$NAME" )" \
        && return 0

    return 1
}

detect_os

os_detected() {
    test -n "$_os"
}

is_cygwin() {
    test "$_os" == 'Cygwin'
}

is_ubuntu() {
    test "$_os" == 'Ubuntu'
}

is_cygwin && set -o igncr

export SHELLOPTS

alias df='df --human-readable'
alias du='du --human-readable'

alias egrep='egrep --color=auto'
alias fgrep='fgrep --color=auto'
alias grep='grep --color=auto'

alias ls='LC_COLLATE=C ls --almost-all -l --human-readable --color=auto'
alias dir='ls --format=vertical'

alias less='less --ignore-case --RAW-CONTROL-CHARS'
alias tree='tree -a'

alias cls='echo -en "\ec"'

list_packages_cygwin() (
    set -o errexit -o nounset -o pipefail

    cygcheck --check-setup --dump-only \
        | cut -d ' ' -f 1
)

list_packages_ubuntu() (
    set -o errexit -o nounset -o pipefail

    dpkg --get-selections                     \
        | grep --invert-match -- 'deinstall$' \
        | cut -f 1                            \
        | cut -d ':' -f 1
)

list_packages() (
    set -o errexit -o nounset -o pipefail

    if is_cygwin; then
        list_packages_cygwin
    elif is_ubuntu; then
        list_packages_ubuntu
    fi
    return 1
)

[ -r "$HOME/.bash_utils/cxx.sh"   ] && source "$HOME/.bash_utils/cxx.sh"
[ -r "$HOME/.bash_utils/distr.sh" ] && source "$HOME/.bash_utils/distr.sh"
[ -r "$HOME/.bash_utils/file.sh"  ] && source "$HOME/.bash_utils/file.sh"
[ -r "$HOME/.bash_utils/git.sh"   ] && source "$HOME/.bash_utils/git.sh"
[ -r "$HOME/.bash_utils/path.sh"  ] && source "$HOME/.bash_utils/path.sh"
[ -r "$HOME/.bash_utils/text.sh"  ] && source "$HOME/.bash_utils/text.sh"

export PYTHONSTARTUP="$HOME/.pythonrc"

update_ruby_settings() {
    local user_dir
    local bin_dir

    command -v ruby &> /dev/null                       \
        && command -v gem &> /dev/null                 \
        && user_dir="$( ruby -e 'puts Gem.user_dir' )" \
        && export GEM_HOME="$user_dir"                 \
        && bin_dir="$( ruby -e 'puts Gem.bindir' )"    \
        && add_path "$bin_dir"
}

update_ruby_settings

is_cygwin || complete -r

if is_cygwin; then
    alias mingcc32='i686-w64-mingw32-gcc'
    alias ming++32='i686-w64-mingw32-g++'
    alias mingcc='x86_64-w64-mingw32-gcc'
    alias ming++='x86_64-w64-mingw32-g++'
fi