diff options
Diffstat (limited to 'eclass')
| -rw-r--r-- | eclass/perl-version.eclass | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/eclass/perl-version.eclass b/eclass/perl-version.eclass new file mode 100644 index 000000000..97022e2be --- /dev/null +++ b/eclass/perl-version.eclass @@ -0,0 +1,91 @@ +# Copyright 1999-2015 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 +# $Header: $ + +# @ECLASS: perl-versions.eclass +# @MAINTAINER: +# perl@gentoo.org +# Kent Fredric <kentnl@cpan.org> +# @BLURB: Perl versioning functions +# @DESCRIPTION: +# The perl-version eclass contains an assortment of functions for denormalizing versions +# in order to streamline version bumps and minimise risk of accidental failure to update +# MODULE_VERSION and unify all the ways of turning arbitrary normalised versions back into +# a form used upstream. + +# expand-tail 5 => 005 +# expand-tail 5.5 => 005005 +perl-version-expand-tail() { + local tail=$1 + if [ -z "${tail}" ]; then + echo '000'; + return; + fi + # Tail with no segments + if [ "${tail%%.*}" = "${tail}" ]; then + printf "%03d" "$tail" + return; + fi + local head="${tail%%.*}" + local rest=$( perl-version-expand-tail "${tail#*.}" ) + printf "%03d%s" $head $rest; + return; +} + +# float 5.1 => 5.001 +# float 5.10 => 5.010 +# float 5.100 => 5.100 +# float 5.1.1 => 5.001001 +perl-version-float() { + local version=$1 + local major=${version%%.*} + local tail=${version#*.} + if [ "$tail" = "$version" ]; then + tail=000; + else + tail=$( perl-version-expand-tail "${tail}" ) + fi + printf "%s.%s" "$major" "$tail"; + return; +} + +# float_n 5.201.505.200 8 => 5.20150520 +perl-version-float_n() { + local version=$1 + local mantissa=$2 + local major=${version%%.*} + if [ "$mantissa" -lt 1 ]; then + printf "%s" $major; + return; + fi + local tail=${version#*.} + if [ "$tail" = "$version" ]; then + tail=000; + else + tail=$( perl-version-expand-tail "${tail}" ) + fi + if [ "${#tail}" -lt $mantissa ]; then + local pad=$(( $mantissa - ${#tail} )); + printf "%s.%s%0${pad}d" "${major}" "${tail}" 0 + return + fi + printf "%s.%s" "${major}" "${tail:0:$mantissa}" +} + +# denormalize 5.201.505.200 float_n 8 => 5.20150520 +perl-version-denormalize() { + local version=$1; + local scheme=$2; + shift + shift + case "${scheme}" in + "float_n") + perl-version-float_n $version "$@" + return + ;; + *) + die "Unknown version scheme ${scheme}" + ;; + esac +} + |