mirror of
https://github.com/asdf-vm/asdf.git
synced 2024-11-15 01:28:17 -07:00
91 lines
2.7 KiB
Bash
91 lines
2.7 KiB
Bash
# shellcheck shell=sh
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# shellcheck disable=SC1007
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# This file is the entrypoint for all POSIX-compatible shells. If `ASDF_DIR` is
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# not already set, this script is able to calculate it, but only if the shell is
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# either Bash, Zsh, and Ksh. For other shells, `ASDF_DIR` must be manually set.
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export ASDF_DIR="${ASDF_DIR:-}"
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if [ -z "$ASDF_DIR" ]; then
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if [ -n "$BASH_VERSION" ]; then
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# Use BASH_SOURCE[0] to obtain the relative path to this source'd file. Since it's
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# a relative path, 'cd' to its dirname and use '$PWD" to obtain the fullpath.
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# Use 'builtin cd' to ensure user-defined 'cd()' functions aren't called.
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# Use variable '_asdf_old_dir' to avoid using subshells.
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_asdf_old_dir=$PWD
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# shellcheck disable=SC3028,SC3054
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if ! CDPATH= builtin cd -- "${BASH_SOURCE[0]%/*}"; then
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printf '%s\n' 'asdf: Error: Failed to cd' >&2
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unset -v _asdf_old_dir
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return 1
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fi
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ASDF_DIR=$PWD
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if ! CDPATH= builtin cd -- "$_asdf_old_dir"; then
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printf '%s\n' 'asdf: Error: Failed to cd' >&2
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unset -v _asdf_old_dir
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return 1
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fi
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unset -v _asdf_old_dir
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elif [ -n "$ZSH_VERSION" ]; then
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# Use '%x' to expand to path of current file. It must be prefixed
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# with '(%):-', so it expands in non-prompt-string contexts.
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# shellcheck disable=SC2296
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ASDF_DIR=${(%):-%x}
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ASDF_DIR=${ASDF_DIR%/*}
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elif [ -n "$KSH_VERSION" ] && [ -z "$PATHSEP" ]; then
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# Only the original KornShell (kornshell.com) has a '.sh.file' variable with the path
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# of the current file. To prevent errors with other variations, such as the MirBSD
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# Korn shell (mksh), test for 'PATHSEP' which is _not_ set on the original Korn Shell.
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# shellcheck disable=SC2296
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ASDF_DIR=${.sh.file}
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ASDF_DIR=${ASDF_DIR%/*}
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fi
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fi
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if [ -z "$ASDF_DIR" ]; then
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printf "%s\n" "asdf: Error: Source directory could not be calculated. Please set \$ASDF_DIR manually before sourcing this file." >&2
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return 1
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fi
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if [ ! -d "$ASDF_DIR" ]; then
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printf "%s\n" "asdf: Error: Variable '\$ASDF_DIR' is not a directory: $ASDF_DIR" >&2
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return 1
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fi
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_asdf_bin="$ASDF_DIR/bin"
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_asdf_shims="${ASDF_DATA_DIR:-$HOME/.asdf}/shims"
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case ":$PATH:" in
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*":$_asdf_bin:"*) : ;;
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*) PATH="$_asdf_bin:$PATH" ;;
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esac
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case ":$PATH:" in
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*":$_asdf_shims:"*) : ;;
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*) PATH="$_asdf_shims:$PATH" ;;
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esac
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unset -v _asdf_bin _asdf_shims
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# The asdf function is a wrapper so we can export variables
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asdf() {
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case $1 in
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"shell")
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if ! shift; then
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printf '%s\n' 'asdf: Error: Failed to shift' >&2
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return 1
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fi
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# Invoke command that needs to export variables.
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eval "$(asdf export-shell-version sh "$@")" # asdf_allow: eval
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;;
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*)
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# Forward other commands to asdf script.
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command asdf "$@" # asdf_allow: ' asdf '
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;;
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esac
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}
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