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4a031504db
* Document listing available versions in the tutorial (#1677) * Reflect 3.7.15's extended support * Document using development head with Homebrew * Structurize the Upgrading section * Fix Pyenv-latest documentation
74 lines
2.2 KiB
Bash
Executable file
74 lines
2.2 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Summary: Print the latest installed or known version with the given prefix
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# Usage: pyenv latest [-k|--known] [-q|--quiet] <prefix>
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#
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# -k/--known Select from all known versions instead of installed
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# -q/--quiet Do not print an error message on resolution failure
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set -e
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[ -n "$PYENV_DEBUG" ] && set -x
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while [[ $# -gt 0 ]]
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do
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case "$1" in
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-k|--known)
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FROM_KNOWN=1
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shift
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;;
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-q|--quiet)
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QUIET=1
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shift
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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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prefix=$1
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exitcode=0
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IFS=$'\n'
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if [[ -z $FROM_KNOWN ]]; then
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DEFINITION_CANDIDATES=( $(pyenv-versions --bare) )
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else
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DEFINITION_CANDIDATES=( $(python-build --definitions ) )
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fi
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# https://stackoverflow.com/questions/11856054/is-there-an-easy-way-to-pass-a-raw-string-to-grep/63483807#63483807
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prefix_re="$(sed 's/[^\^]/[&]/g;s/[\^]/\\&/g' <<< "$prefix")"
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# FIXME: more reliable and readable would probably be to loop over them and transform in pure Bash
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DEFINITION_CANDIDATES=(\
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$(printf '%s\n' "${DEFINITION_CANDIDATES[@]}" | \
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grep -Ee "^$prefix_re[-.]" || true))
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DEFINITION_CANDIDATES=(\
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$(printf '%s\n' "${DEFINITION_CANDIDATES[@]}" | \
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sed -E -e '/-dev$/d' -e '/-src$/d' -e '/-latest$/d' -e '/(b|rc)[0-9]+$/d'));
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# Compose a sorting key, followed by | and original value
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DEFINITION_CANDIDATES=(\
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$(printf '%s\n' "${DEFINITION_CANDIDATES[@]}" | \
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awk \
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'{ if (match($0,"^[[:alnum:]]+-"))
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{ print substr($0,0,RLENGTH-1) "." substr($0,RLENGTH+1) "..|" $0; }
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else
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{ print $0 "...|" $0; }
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}'))
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DEFINITION_CANDIDATES=(\
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$(printf '%s\n' "${DEFINITION_CANDIDATES[@]}" \
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| sort -t. -k1,1r -k 2,2nr -k 3,3nr -k4,4nr \
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| cut -f2 -d $'|' \
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|| true))
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DEFINITION="${DEFINITION_CANDIDATES[0]}"
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if [[ -n "$DEFINITION" ]]; then
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echo "$DEFINITION"
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else
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if [[ -z $QUIET ]]; then
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echo "pyenv: no $([[ -z $FROM_KNOWN ]] && echo installed || echo known) versions match the prefix \`$prefix'" >&2
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fi
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exitcode=1
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fi
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exit $exitcode
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