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|
#!/usr/bin/env bash
# Summary: Print the latest installed or known version with the given prefix
# Usage: pyenv latest [-k|--known] <prefix>
#
# -k/--known Select from all known versions instead of installed
# -b/--bypass (internal) On a resolution failure, do not print an error message
# but rather print the argument unchanged
# -f/--force (internal) Same as -b but also do not return a failure exit code
set -e
[ -n "$PYENV_DEBUG" ] && set -x
while [[ $# -gt 0 ]]
do
case "$1" in
-k|--known)
FROM_KNOWN=1
shift
;;
-b|--bypass)
BYPASS=1
shift
;;
-f|--force)
FORCE=1
BYPASS=1
shift
;;
*)
break
;;
esac
done
prefix=$1
exitcode=0
IFS=$'\n'
if [[ -z $FROM_KNOWN ]]; then
DEFINITION_CANDIDATES=( $(pyenv-versions --bare --skip-envs) )
else
DEFINITION_CANDIDATES=( $(python-build --definitions ) )
fi
if printf '%s\n' "${DEFINITION_CANDIDATES[@]}" 2>/dev/null | grep -qxFe "$prefix"; then
echo "$prefix"
exit $exitcode;
fi
suffix=""
if [[ $prefix =~ ^(.*[0-9])t$ ]]; then
suffix="t"
prefix="${BASH_REMATCH[1]}"
fi
# https://stackoverflow.com/questions/11856054/is-there-an-easy-way-to-pass-a-raw-string-to-grep/63483807#63483807
prefix_re="$(sed 's/[^\^]/[&]/g;s/[\^]/\\&/g' <<< "$prefix")"
suffix_re="$(sed 's/[^\^]/[&]/g;s/[\^]/\\&/g' <<< "$suffix")"
# FIXME: more reliable and readable would probably be to loop over them and transform in pure Bash
DEFINITION_CANDIDATES=(\
$(printf '%s\n' "${DEFINITION_CANDIDATES[@]}" | \
grep -Ee "^$prefix_re[-.].*$suffix_re\$" || true))
DEFINITION_CANDIDATES=(\
$(printf '%s\n' "${DEFINITION_CANDIDATES[@]}" | \
sed -E -e '/-dev$/d' -e '/-src$/d' -e '/-latest$/d' -e '/(a|b|rc)[0-9]+$/d' \
$(if [[ -z $suffix ]]; then echo "-e /[0-9]t\$/d"; fi)
));
# Compose a sorting key, followed by | and original value
DEFINITION_CANDIDATES=(\
$(printf '%s\n' "${DEFINITION_CANDIDATES[@]}" | \
awk \
'{ if (match($0,"^[[:alnum:]]+-"))
{ print substr($0,0,RLENGTH-1) "." substr($0,RLENGTH+1) "..|" $0; }
else
{ print $0 "...|" $0; }
}'))
DEFINITION_CANDIDATES=(\
$(printf '%s\n' "${DEFINITION_CANDIDATES[@]}" \
| sort -t. -k1,1r -k 2,2nr -k 3,3nr -k4,4nr \
| cut -f2 -d $'|' \
|| true))
DEFINITION="${DEFINITION_CANDIDATES[0]}"
if [[ -n "$DEFINITION" ]]; then
echo "$DEFINITION"
else
if [[ -z $BYPASS ]]; then
echo "pyenv: no $([[ -z $FROM_KNOWN ]] && echo installed || echo known) versions match the prefix \`$prefix'" >&2
else
echo "$prefix"
fi
if [[ -z $FORCE ]]; then
exitcode=1
fi
fi
exit $exitcode
|
