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db143bb654
Enables shelling out from a ruby process started with rbenv to a ruby process with a different RBENV_VERSION. Fixes #121 This removes the workaround created for #15 and solves `ruby -S` support by setting RUBYPATH. PATH is never changed. To illustrate how RUBYPATH changes in various configurations: PATH=~/bin:~/.rbenv/shims:/usr/bin:/bin RBENV_VERSION=1.8 ruby -S rake #=> executes ~/.rbenv/versions/1.8/bin/rake #=> RUBYPATH=~/bin:~/.rbenv/versions/1.8/bin:/usr/bin:/bin RBENV_VERSION=2.0 ruby -S rake #=> executes ~/.rbenv/versions/2.0/bin/rake #=> RUBYPATH=~/bin:~/.rbenv/versions/2.0/bin:/usr/bin:/bin RBENV_VERSION=system ruby -S rake #=> executes /usr/bin/rake #=> RUBYPATH=~/bin:/rbenv_shims_were_here:/usr/bin:/bin RBENV_VERSION=1.8 ruby -S rake #=> executes ~/.rbenv/versions/1.8/bin/rake #=> RUBYPATH=~/bin:~/.rbenv/versions/1.8/bin:/usr/bin:/bin
83 lines
1.9 KiB
Bash
Executable file
83 lines
1.9 KiB
Bash
Executable file
#!/usr/bin/env bash
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#
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# Summary: Run an executable with the selected Ruby version
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#
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# Usage: rbenv exec <command> [args...]
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#
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# Runs an executable contained by the currently selected Ruby's bin
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# directory. Rough equivalent of:
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#
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# exec "$(rbenv prefix)/bin/$command" args...
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set -e
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[ -n "$RBENV_DEBUG" ] && set -x
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rubypath=""
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# Provide rbenv completions
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while true; do
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case "$1" in
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"--complete" )
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exec rbenv shims --short
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;;
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"--rubypath" )
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rubypath=1
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shift 1
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;;
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* )
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break
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;;
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esac
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done
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# Replace any "RBENV_ROOT/shims" or "RBENV_ROOT/versions/*/bin" paths in the
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# list with the given path. If no replacements were made, prepend the path onto
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# the list.
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replace_shims_path() {
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local path="$1"
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local dir="$2"
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# fake directory that serves as a placeholder for shims location in RUBYPATH:
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local placeholder="/rbenv_shims_were_here"
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local found=""
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local result=""
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local -a paths
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IFS=: paths=($path)
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for path in "${paths[@]}"; do
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if [[ $path = "${RBENV_ROOT}/shims" || $path == "${RBENV_ROOT}/versions/"*/bin || $path = $placeholder ]]; then
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found=1
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result="${result}${dir:-$placeholder}:"
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else
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result="${result}${path}:"
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fi
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done
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# if no rbenv paths were replaced, simply prepend the path
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[ -n "$found" -o -z "$dir" ] || result="${dir}:${path}"
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echo "${result%:}"
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}
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RBENV_VERSION="$(rbenv-version-name)"
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RBENV_COMMAND="$1"
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if [ -z "$RBENV_COMMAND" ]; then
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rbenv-help --usage exec >&2
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exit 1
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fi
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export RBENV_VERSION
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RBENV_COMMAND_PATH="$(rbenv-which "$RBENV_COMMAND")"
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OLDIFS="$IFS"
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IFS=$'\n' scripts=(`rbenv-hooks exec`)
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IFS="$OLDIFS"
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for script in "${scripts[@]}"; do
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source "$script"
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done
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shift 1
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if [ -n "$rubypath" ]; then
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bindir=""
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[ "$RBENV_VERSION" != "system" ] && bindir="${RBENV_COMMAND_PATH%/*}"
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export RUBYPATH="$(replace_shims_path "${RUBYPATH:-$PATH}" "$bindir")"
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fi
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exec -a "$RBENV_COMMAND" "$RBENV_COMMAND_PATH" "$@"
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