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|
#!/usr/bin/env bash
#
# Summary: Set or show the shell-specific Ruby version
#
# Usage: rbenv shell <version>
# rbenv shell -
# rbenv shell --unset
#
# Sets a shell-specific Ruby version by setting the `RBENV_VERSION'
# environment variable in your shell. This version overrides local
# application-specific versions and the global version.
#
# <version> should be a string matching a Ruby version known to rbenv.
# The special version string `system' will use your default system Ruby.
# Run `rbenv versions' for a list of available Ruby versions.
#
# When `-` is passed instead of the version string, the previously set
# version will be restored. With `--unset`, the `RBENV_VERSION`
# environment variable gets unset, restoring the environment to the
# state before the first `rbenv shell` call.
set -e
[ -n "$RBENV_DEBUG" ] && set -x
# Provide rbenv completions
if [ "$1" = "--complete" ]; then
echo --unset
echo system
exec rbenv-versions --bare
fi
version="$1"
shell="$(basename "${RBENV_SHELL:-$SHELL}")"
if [ -z "$version" ]; then
if [ -z "$RBENV_VERSION" ]; then
echo "rbenv: no shell-specific version configured" >&2
exit 1
else
echo 'echo "$RBENV_VERSION"'
exit
fi
fi
if [ "$version" = "--unset" ]; then
case "$shell" in
fish )
echo 'set -gu RBENV_VERSION_OLD "$RBENV_VERSION"'
echo "set -e RBENV_VERSION"
;;
* )
echo 'RBENV_VERSION_OLD="$RBENV_VERSION"'
echo "unset RBENV_VERSION"
;;
esac
exit
fi
if [ "$version" = "-" ]; then
case "$shell" in
fish )
cat <<EOS
if set -q RBENV_VERSION_OLD
if [ -n "\$RBENV_VERSION_OLD" ]
set RBENV_VERSION_OLD_ "\$RBENV_VERSION"
set -gx RBENV_VERSION "\$RBENV_VERSION_OLD"
set -gu RBENV_VERSION_OLD "\$RBENV_VERSION_OLD_"
set -e RBENV_VERSION_OLD_
else
set -gu RBENV_VERSION_OLD "\$RBENV_VERSION"
set -e RBENV_VERSION
end
else
echo "rbenv: RBENV_VERSION_OLD is not set" >&2
false
end
EOS
;;
* )
cat <<EOS
if [ -n "\${RBENV_VERSION_OLD+x}" ]; then
if [ -n "\$RBENV_VERSION_OLD" ]; then
RBENV_VERSION_OLD_="\$RBENV_VERSION"
export RBENV_VERSION="\$RBENV_VERSION_OLD"
RBENV_VERSION_OLD="\$RBENV_VERSION_OLD_"
unset RBENV_VERSION_OLD_
else
RBENV_VERSION_OLD="\$RBENV_VERSION"
unset RBENV_VERSION
fi
else
echo "rbenv: RBENV_VERSION_OLD is not set" >&2
false
fi
EOS
;;
esac
exit
fi
# Make sure the specified version is installed.
if rbenv-prefix "$version" >/dev/null; then
if [ "$version" != "$RBENV_VERSION" ]; then
case "$shell" in
fish )
echo 'set -gu RBENV_VERSION_OLD "$RBENV_VERSION"'
echo "set -gx RBENV_VERSION \"$version\""
;;
* )
echo 'RBENV_VERSION_OLD="$RBENV_VERSION"'
echo "export RBENV_VERSION=\"$version\""
;;
esac
fi
else
echo "false"
exit 1
fi
|
