fd0f029e99
Honestly, you should be ashamed that this hasn't been source controlled sooner. Tsk tsk tsk.
113 lines
3 KiB
Bash
Executable file
113 lines
3 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -uo pipefail;
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####################################
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# Ensure we can execute standalone #
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####################################
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function early_death() {
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echo "[FATAL] ${0}: ${1}" >&2;
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exit 1;
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};
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if [ -z "${TFENV_ROOT:-""}" ]; then
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# http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
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readlink_f() {
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local target_file="${1}";
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local file_name;
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while [ "${target_file}" != "" ]; do
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cd "${target_file%/*}" || early_death "Failed to 'cd \$(${target_file%/*})' while trying to determine TFENV_ROOT";
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file_name="${target_file##*/}" || early_death "Failed to '\"${target_file##*/}\"' while trying to determine TFENV_ROOT";
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target_file="$(readlink "${file_name}")";
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done;
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echo "$(pwd -P)/${file_name}";
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};
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TFENV_SHIM=$(readlink_f "${0}")
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TFENV_ROOT="${TFENV_SHIM%/*/*}";
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[ -n "${TFENV_ROOT}" ] || early_death "Failed to determine TFENV_ROOT";
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else
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TFENV_ROOT="${TFENV_ROOT%/}";
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fi;
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export TFENV_ROOT;
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if [ -n "${TFENV_HELPERS:-""}" ]; then
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log 'debug' 'TFENV_HELPERS is set, not sourcing helpers again';
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else
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[ "${TFENV_DEBUG:-0}" -gt 0 ] && >&2 echo "[DEBUG] Sourcing helpers from ${TFENV_ROOT}/lib/helpers.sh";
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if source "${TFENV_ROOT}/lib/helpers.sh"; then
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log 'debug' 'Helpers sourced successfully';
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else
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early_death "Failed to source helpers from ${TFENV_ROOT}/lib/helpers.sh";
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fi;
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fi;
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# Ensure libexec and bin are in $PATH
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for dir in libexec bin; do
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case ":${PATH}:" in
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*:${TFENV_ROOT}/${dir}:*) log 'debug' "\$PATH already contains '${TFENV_ROOT}/${dir}', not adding it again";;
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*)
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log 'debug' "\$PATH does not contain '${TFENV_ROOT}/${dir}', prepending and exporting it now";
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export PATH="${TFENV_ROOT}/${dir}:${PATH}";
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;;
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esac;
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done;
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#####################
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# Begin Script Body #
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#####################
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declare arg="${1:-""}";
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log 'debug' "Setting TFENV_DIR to ${PWD}";
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export TFENV_DIR="${PWD}";
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abort() {
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log 'debug' 'Aborting...';
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{
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if [ "${#}" -eq 0 ]; then
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cat -;
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else
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echo "tfenv: ${*}";
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fi;
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} >&2;
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};
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log 'debug' "tfenv argument is: ${arg}";
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case "${arg}" in
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"")
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log 'debug' 'No argument provided, dumping version and help and aborting';
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{
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tfenv---version;
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tfenv-help;
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} | abort && exit 1;
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exit 1;
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;;
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-v | --version )
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log 'debug' 'tfenv version requested...';
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exec tfenv---version;
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;;
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-h | --help )
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log 'debug' 'tfenv help requested...';
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exec tfenv-help;
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;;
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*)
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log 'debug' "Long argument provided: ${arg}";
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command_path="$(command -v "tfenv-${arg}" || true)";
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log 'debug' "Resulting command-path: ${command_path}";
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if [ -z "${command_path}" ]; then
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{
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echo "No such command '${arg}'";
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tfenv-help;
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} | abort && exit 1;
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fi;
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shift 1;
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log 'debug' "Exec: \"${command_path}\" \"$*\"";
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exec "${command_path}" "$@";
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;;
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esac;
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log 'error' 'This line should not be reachable. Something catastrophic has occurred';
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