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A shot at v2.0.0-beta2 without use-on-install
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| #!/usr/bin/env bash | ||
| # Usage: tfenv resolve-version [<version>] | ||
| # Summary: Resolve the version to action based on the environment and optional input token | ||
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| set -uo pipefail; | ||
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| #################################### | ||
| # Ensure we can execute standalone # | ||
| #################################### | ||
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| function early_death() { | ||
| echo "[FATAL] ${0}: ${1}" >&2; | ||
| exit 1; | ||
| }; | ||
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| if [ -z "${TFENV_ROOT:-""}" ]; then | ||
| # http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac | ||
| readlink_f() { | ||
| local target_file="${1}"; | ||
| local file_name; | ||
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| while [ "${target_file}" != "" ]; do | ||
| cd "$(dirname ${target_file})" || early_death "Failed to 'cd \$(dirname ${target_file})' while trying to determine TFENV_ROOT"; | ||
| file_name="$(basename "${target_file}")" || early_death "Failed to 'basename \"${target_file}\"' while trying to determine TFENV_ROOT"; | ||
| target_file="$(readlink "${file_name}")"; | ||
| done; | ||
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| echo "$(pwd -P)/${file_name}"; | ||
| }; | ||
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| TFENV_ROOT="$(cd "$(dirname "$(readlink_f "${0}")")/.." && pwd)"; | ||
| [ -n ${TFENV_ROOT} ] || early_death "Failed to 'cd \"\$(dirname \"\$(readlink_f \"${0}\")\")/..\" && pwd' while trying to determine TFENV_ROOT"; | ||
| else | ||
| TFENV_ROOT="${TFENV_ROOT%/}"; | ||
| fi; | ||
| export TFENV_ROOT; | ||
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| if [ -n "${TFENV_HELPERS:-""}" ]; then | ||
| log 'debug' 'TFENV_HELPERS is set, not sourcing helpers again'; | ||
| else | ||
| [ "${TFENV_DEBUG:-0}" -gt 0 ] && echo "[DEBUG] Sourcing helpers from ${TFENV_ROOT}/lib/helpers.sh"; | ||
| if source "${TFENV_ROOT}/lib/helpers.sh"; then | ||
| log 'debug' 'Helpers sourced successfully'; | ||
| else | ||
| early_death "Failed to source helpers from ${TFENV_ROOT}/lib/helpers.sh"; | ||
| fi; | ||
| fi; | ||
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| # Ensure libexec and bin are in $PATH | ||
| for dir in libexec bin; do | ||
| case ":${PATH}:" in | ||
| *:${TFENV_ROOT}/${dir}:*) log 'debug' "\$PATH already contains '${TFENV_ROOT}/${dir}', not adding it again";; | ||
| *) | ||
| log 'debug' "\$PATH does not contain '${TFENV_ROOT}/${dir}', prepending and exporting it now"; | ||
| export PATH="${TFENV_ROOT}/${dir}:${PATH}"; | ||
| ;; | ||
| esac; | ||
| done; | ||
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| ##################### | ||
| # Begin Script Body # | ||
| ##################### | ||
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| declare version_requested version regex min_required version_file; | ||
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| declare arg="${1:-""}"; | ||
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| if [ -z "${arg}" ]; then | ||
| version_file="$(tfenv-version-file)"; | ||
| log 'debug' "Version File: ${version_file}"; | ||
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| if [ "${version_file}" != "${TFENV_ROOT}/version" ]; then | ||
| log 'debug' "Version File (${version_file}) is not the default \${TFENV_ROOT}/version (${TFENV_ROOT}/version)"; | ||
| version_requested="$(cat "${version_file}")" \ | ||
| || log 'error' "Failed to open ${version_file}"; | ||
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| elif [ -f "${version_file}" ]; then | ||
| log 'debug' "Version File is the default \${TFENV_ROOT}/version (${TFENV_ROOT}/version)"; | ||
| version_requested="$(cat "${version_file}")" \ | ||
| || log 'error' "Failed to open ${version_file}"; | ||
|
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| # Absolute fallback | ||
| if [ -z "${version_requested}" ]; then | ||
| log 'debug' 'Version file had no content. Falling back to "latest"'; | ||
| version_requested='latest'; | ||
| fi; | ||
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| else | ||
| log 'debug' "Version File is the default \${TFENV_ROOT}/version (${TFENV_ROOT}/version) but it doesn't exist"; | ||
| log 'info' 'No version requested on the command line or in the version file search path. Installing "latest"'; | ||
| version_requested='latest'; | ||
| fi; | ||
| else | ||
| version_requested="${arg}"; | ||
| fi; | ||
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| log 'debug' "Version Requested: ${version_requested}"; | ||
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| if [[ "${version_requested}" =~ ^min-required$ ]]; then | ||
| log 'info' 'Detecting minimum required version...'; | ||
| min_required="$(tfenv-min-required)" \ | ||
| || log 'error' 'tfenv-min-required failed'; | ||
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| log 'info' "Minimum required version detected: ${min_required}"; | ||
| version_requested="${min_required}"; | ||
| fi; | ||
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| if [[ "${version_requested}" =~ ^latest\:.*$ ]]; then | ||
| version="${version_requested%%\:*}"; | ||
| regex="${version_requested##*\:}"; | ||
| log 'debug' "Version uses latest keyword with regex: ${regex}"; | ||
| elif [[ "${version_requested}" =~ ^latest$ ]]; then | ||
| version="${version_requested}"; | ||
| regex="^[0-9]\+\.[0-9]\+\.[0-9]\+$"; | ||
| log 'debug' "Version uses latest keyword alone. Forcing regex to match stable versions only: ${regex}"; | ||
| else | ||
| version="${version_requested}"; | ||
| regex="^${version_requested}$"; | ||
| log 'debug' "Version is explicit: ${version}. Regex enforces the version: ${regex}"; | ||
| fi; | ||
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| echo "${version}:${regex}"; |
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