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‎czruby.plugin.zsh

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## Change Ruby
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# I put the following in ~/.zshenv
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# export RUBIES_DEFAULT="2.7.0"
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#
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# czruby_custom_init(){
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# for name in $HOME/Library/Frameworks/Ruby.framework/Versions/*; do
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# canon=$(greadlink -f "$name")
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# if [[ ${canon:t} != "Current" ]]; then
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# rubies=("$canon" $rubies)
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# fi
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# done
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# }
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export -TU RUBIES rubies
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gem_calc_home(){
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local gh="$XDG_CACHE_HOME/Ruby/$RUBY_ENGINE/$RUBY_VERSION"
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mkdir -p "$gh"
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print -n "$gh"
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}
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export -TU GEM_PATH gem_path
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export RUBY_CONFIG="$HOME/Library/ApplicationSupport/Ruby"
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export RUBY_STD_EXES=(bundle bundler erb gem irb racc racc2y rake rdoc ri ruby y2racc)
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czruby_datadir="$XDG_DATA_HOME/czruby"
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czruby_setup(){
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mkdir -p "$czruby_datadir"
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if whence -w czruby_custom_init 2>&1 > /dev/null; then
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czruby_custom_init
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fi
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# If system is not found in the rubies then add it
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if ! (( $rubies[(Ie)system] )); then
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rubies=(system $rubies)
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fi
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local ruby_root ruby_ver ruby_eng key
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for ruby_root in $rubies; do
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key="${ruby_root:t}"
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if [[ $key == system ]]; then
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ruby_root="/usr"
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ruby_eng="ruby"
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ruby_ver="2.3.7" # TODO remove hardcoding
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elif [[ $key =~ "-" ]]; then
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ruby_eng=${key:-ruby}
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splits=(${(s[-])ruby_eng});
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ruby_eng=$splits[1]
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ruby_ver=$splits[2]
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else
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ruby_eng="ruby"
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ruby_ver="$key"
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fi
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if [[ ! -e "$czruby_datadir/$key" ]]; then
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cat << EOF > "$czruby_datadir/$key"
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export RUBY_ENGINE="$ruby_eng"
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export RUBY_ROOT="$ruby_root"
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export RUBY_VERSION="$ruby_ver"
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export GEM_HOME=\$(gem_calc_home)
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gem_path=(\$GEM_HOME "$ruby_root/lib/$ruby_eng/gems/$ruby_ver" \$gem_path)
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local bin
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for place in \${(Oa)gem_path}; do
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bin="\$place/bin"
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path=("\$bin" \$path)
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done
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unset bin
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EOF
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fi
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done
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unset ruby_root ruby_ver ruby_eng key
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czruby_set_default "$RUBIES_DEFAULT"
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}
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czruby_set_default(){
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local choice="${1:-system}"
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[[ -z $choice ]] && return 1
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if [[ ! $rubies(Ie)$choice ]]; then
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printf "That ruby is not available"
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czruby
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return 1
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fi
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local old_default=$RUBIES_DEFAULT
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RUBIES_DEFAULT="$choice"
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[[ -h $czruby_datadir/default ]] && rm $czruby_datadir/default
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ln -s "$czruby_datadir/${RUBIES_DEFAULT}" "$czruby_datadir/default"
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# Check if current ruby was the default
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# if so, change to new choice
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# At worst, either the user has to do this themselves
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# or set it back.
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if [[ "$RUBY_ENGINE-$RUBY_VERSION" == "$choice" ]] ||
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[[ "$RUBY_VERSION" == "$choice" && "$RUBY_ENGINE" == "ruby" ]]; then
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czruby "$choice"
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fi
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}
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czruby_reset(){
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local ver=${1:-default}
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local ruby_root=${2:-$RUBY_ROOT}
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local excludes=()
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for place in $gem_path; do
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bin="$place/bin"
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excludes=("$bin" $excludes)
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done
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if [[ $#gem_path > 0 ]]; then
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path=(${path:|excludes})
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fi
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gem_path=()
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unset excludes
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source "$czruby_datadir/$ver"
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czruby_aliases "$ruby_root"
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}
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czruby_aliases () {
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local oldifs="$IFS"
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local ruby_root="$1"
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for exe in $RUBY_STD_EXES; do
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IFS=$': '
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splits=($(whence -w ruby))
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if [[ $? == 0 && $splits[2] == "alias" ]]; then
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unalias "$exe" 2>/dev/null
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fi
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if [[ -f "$ruby_root/bin/$exe" ]]; then
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alias "$exe"="'$ruby_root/bin/$exe'"
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fi
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done
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IFS="$oldifs"
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}
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czruby_source(){
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# source the file
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if [[ -r "$1" ]]; then
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source "$1"
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else
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czruby_setup
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if [[ -r "$1" ]]; then
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source "$1"
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else
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# blow up
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echo "No source file found at $1"
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exit 1
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fi
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fi
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}
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czruby_use(){
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local dir ruby ruby_root ruby_ver ruby_eng
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local matches=()
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for ruby_root in $rubies; do
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if [[ ${ruby_root:t} =~ "-" ]]; then
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ruby_eng=${${ruby_root:t}:-ruby}
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splits=(${(s[-])ruby_eng});
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ruby_eng=$splits[1]
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ruby_ver=$splits[2]
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else
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ruby_eng="ruby"
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ruby_ver="${ruby_root:t}"
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fi
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if [[ "${ruby_root:t}" == "$1" ]]; then
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matches=("$ruby_root" $matches) && break
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elif [[ "${ruby_eng}" == "$1" ]]; then
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matches=("$ruby_root" $matches)
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fi
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done
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if [[ $#matches == 0 ]]; then
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printf "czruby: unknown Ruby: %s\n" $1 >&2
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return 1
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elif [[ $#matches -ge 2 ]]; then
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printf "Too many matches, be more specific\n"
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for match in $matches; do
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printf '%s %s\n' "${match:t}" "${match}";
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done
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return 1
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fi
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czruby_reset "${matches[1]:t}" "$ruby_root"
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unset dir ruby splits ruby_root ruby_ver ruby_eng oldifs matches
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}
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czruby () {
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case "$1" in
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-h|--help)
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printf "usage: czruby [RUBY|VERSION|system | --set-default RUBY] [RUBYOPT...]\n"
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;;
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# -V|--version)
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# echo "czruby: $CZRUBY_VERSION"
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# ;;
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"") # show available rubies
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local marked ruby_root ruby_ver ruby_eng key
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local rmarker dmarker smarker
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local stopper="%{$reset_color%}"
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local default=system
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if [[ -r "$czruby_datadir/default" ]]; then
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default="$(greadlink -f $czruby_datadir/default)"
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default=${default:t}
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fi
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typeset -A lines
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print -Pn -f '%6s| %-11s| %-10s| %4s\n' -- " " engine version root
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print -Pn -f '=%.0s' -- {1..40}
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print -n '\n'
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for ruby_root in $rubies; do
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if [[ $ruby_root == "system" ]]; then
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ruby_eng="ruby"
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ruby_ver="2.3.7"
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ruby_root="/usr"
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key="system"
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else
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key="${ruby_root:t}"
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if [[ ${ruby_root:t} =~ "-" ]]; then
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ruby_eng=${${ruby_root:t}:-ruby}
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splits=(${(s[-])ruby_eng});
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ruby_eng=$splits[1]
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ruby_ver=$splits[2]
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else
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ruby_eng="ruby"
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ruby_ver="${ruby_root:t}"
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fi
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fi
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[[ $RUBY_ROOT == $ruby_root ]] && rmarker="$FG[002]*$stopper " && marked="true" || rmarker=" "
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[[ $default == $key ]] && dmarker="$FG[199]*$stopper " || dmarker=" "
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[[ $key == "system" ]] && smarker="$FG[247]*$stopper " || smarker=" "
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print -Pn -f '%2b%2b%2b %-12s %-11s %s%s\n' -- $rmarker $dmarker $smarker ${ruby_eng} $ruby_ver ${ruby_root} $stopper
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unset rmarker dmarker smarker
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done
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print -Pn -f '\n%b %b %b' "$FG[002]current$stopper" "$FG[199]default$stopper" "$FG[247]system$stopper\n"
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unset marked rmarker ruby_root ruby_eng ruby_ver
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;;
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--set-default) shift;
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czruby_set_default $1
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;;
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system) czruby_reset system ;;
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default) czruby_reset ;;
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*) czruby_use $1 ;;
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esac
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}
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if [[ -z "$RUBIES_DEFAULT" ]]; then
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export RUBIES_DEFAULT="system"
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fi
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czruby_setup
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czruby "$RUBIES_DEFAULT"

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