[gentoo-commits] repo/gentoo:master commit in: eclass/tests/, eclass/

[Ulrich Müller]

commit:     7175c90c8c4bc1332899dffa6b5fa7a7b30ad2a4
Author:     Ulrich Müller <ulm <AT> gentoo <DOT> org>
AuthorDate: Sat Sep 23 08:58:43 2017 +0000
Commit:     Ulrich Müller <ulm <AT> gentoo <DOT> org>
CommitDate: Tue Sep 26 18:46:27 2017 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=7175c90c

eapi7-ver.eclass: Use lexicographic rather than arithmetic comparison.

This removes the 2**63-1 limit for integer components.

 eclass/eapi7-ver.eclass   | 36 ++++++++++++++++++++++++++----------
 eclass/tests/eapi7-ver.sh |  2 +-
 2 files changed, 27 insertions(+), 11 deletions(-)

diff --git a/eclass/eapi7-ver.eclass b/eclass/eapi7-ver.eclass
index 5ca8b8143af..7eb070c6817 100644
--- a/eclass/eapi7-ver.eclass
+++ b/eclass/eapi7-ver.eclass
@@ -174,6 +174,28 @@ ver_rs() {
        echo "${comp[*]}"
 }
 
+# @FUNCTION: _ver_compare_int
+# @USAGE: <a> <b>
+# @RETURN: 0 if <a> -eq <b>, 1 if <a> -lt <b>, 3 if <a> -gt <b>
+# @INTERNAL
+# @DESCRIPTION:
+# Compare two non-negative integers <a> and <b>, of arbitrary length.
+# If <a> is equal to, less than, or greater than <b>, return 0, 1, or 3
+# as exit status, respectively.
+_ver_compare_int() {
+       local a=$1 b=$2 d=$(( ${#1}-${#2} ))
+
+       # Zero-pad to equal length if necessary.
+       if [[ ${d} -gt 0 ]]; then
+               printf -v b "%0${d}d%s" 0 "${b}"
+       elif [[ ${d} -lt 0 ]]; then
+               printf -v a "%0$(( -d ))d%s" 0 "${a}"
+       fi
+
+       [[ ${a} > ${b} ]] && return 3
+       [[ ${a} == "${b}" ]]
+}
+
 # @FUNCTION: _ver_compare
 # @USAGE: <va> <vb>
 # @RETURN: 1 if <va> < <vb>, 2 if <va> = <vb>, 3 if <va> > <vb>
@@ -200,10 +222,7 @@ _ver_compare() {
 
        # Compare numeric components (PMS algorithm 3.2)
        # First component
-       a=${an%%.*}
-       b=${bn%%.*}
-       [[ 10#${a} -gt 10#${b} ]] && return 3
-       [[ 10#${a} -lt 10#${b} ]] && return 1
+       _ver_compare_int "${an%%.*}" "${bn%%.*}" || return
 
        while [[ ${an} == *.* && ${bn} == *.* ]]; do
                # Other components (PMS algorithm 3.3)
@@ -218,8 +237,7 @@ _ver_compare() {
                        [[ ${a} > ${b} ]] && return 3
                        [[ ${a} < ${b} ]] && return 1
                else
-                       [[ ${a} -gt ${b} ]] && return 3
-                       [[ ${a} -lt ${b} ]] && return 1
+                       _ver_compare_int "${a}" "${b}" || return
                fi
        done
        [[ ${an} == *.* ]] && return 3
@@ -237,8 +255,7 @@ _ver_compare() {
                a=${as%%_*}
                b=${bs%%_*}
                if [[ ${a%%[0-9]*} == "${b%%[0-9]*}" ]]; then
-                       [[ 10#${a##*[a-z]} -gt 10#${b##*[a-z]} ]] && return 3
-                       [[ 10#${a##*[a-z]} -lt 10#${b##*[a-z]} ]] && return 1
+                       _ver_compare_int "${a##*[a-z]}" "${b##*[a-z]}" || return
                else
                        # Check for p first
                        [[ ${a%%[0-9]*} == p ]] && return 3
@@ -256,8 +273,7 @@ _ver_compare() {
        fi
 
        # Compare revision components (PMS algorithm 3.7)
-       [[ 10#${ar#-r} -gt 10#${br#-r} ]] && return 3
-       [[ 10#${ar#-r} -lt 10#${br#-r} ]] && return 1
+       _ver_compare_int "${ar#-r}" "${br#-r}" || return
 
        return 2
 }

diff --git a/eclass/tests/eapi7-ver.sh b/eclass/tests/eapi7-ver.sh
index fd085a415b6..d4aa4fdbd28 100755
--- a/eclass/tests/eapi7-ver.sh
+++ b/eclass/tests/eapi7-ver.sh
@@ -150,7 +150,7 @@ teqr 0 ver_test 1.010 -eq 1.01
 teqr 0 ver_test 1.01 -lt 1.1
 teqr 0 ver_test 1.2_pre08-r09 -eq 1.2_pre8-r9
 teqr 0 ver_test 0 -lt 576460752303423488 # 2**59
-#teqr 0 ver_test 0 -lt 9223372036854775808 # 2**63 fails, integer rollover
+teqr 0 ver_test 0 -lt 9223372036854775808 # 2**63
 
 # Bad number or ordering of arguments
 txf ver_test 1