openwrtv4/scripts/getver.sh
Jonas Gorski efdd3bf5fb scripts/getver.sh: fix older git versions from printing stuff to stdout
Older git versions seem output the original argument to stdout if there
is no upstream, presumably because they try to do things with it
internally. This can be prevented by passing --verify to it, which
should be safe on newer git versions.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
2016-07-16 20:50:56 +02:00

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#!/usr/bin/env bash
export LANG=C
export LC_ALL=C
[ -n "$TOPDIR" ] && cd $TOPDIR
GET_REV=$1
try_version() {
[ -f version ] || return 1
REV="$(cat version)"
[ -n "$REV" ]
}
try_git() {
REBOOT=ee53a240ac902dc83209008a2671e7fdcf55957a
git rev-parse --git-dir >/dev/null 2>&1 || return 1
[ -n "$GET_REV" ] || GET_REV="HEAD"
case "$GET_REV" in
r*)
GET_REV="$(echo $GET_REV | tr -d 'r')"
BASE_REV="$(git rev-list ${REBOOT}..HEAD | wc -l | awk '{print $1}')"
REV="$(git rev-parse HEAD~$((BASE_REV - GET_REV)))"
;;
*)
BRANCH="$(git rev-parse --abbrev-ref HEAD)"
ORIGIN="$(git rev-parse --verify --symbolic-full-name ${BRANCH}@{u} 2>/dev/null)"
[ -n "$ORIGIN" ] || ORIGIN="$(git rev-parse --verify --symbolic-full-name master@{u} 2>/dev/null)"
REV="$(git rev-list ${REBOOT}..$GET_REV | wc -l | awk '{print $1}')"
if [ -n "$ORIGIN" ]; then
UPSTREAM_BASE="$(git merge-base $GET_REV $ORIGIN)"
UPSTREAM_REV="$(git rev-list ${REBOOT}..$UPSTREAM_BASE | wc -l | awk '{print $1}')"
else
UPSTREAM_REV=$REV
fi
if [ "$REV" -gt "$UPSTREAM_REV" ]; then
REV="${UPSTREAM_REV}+$((REV - UPSTREAM_REV))"
fi
REV="${REV:+r$REV}"
;;
esac
[ -n "$REV" ]
}
try_hg() {
[ -d .hg ] || return 1
REV="$(hg log -r-1 --template '{desc}' | awk '{print $2}' | sed 's/\].*//')"
REV="${REV:+r$REV}"
[ -n "$REV" ]
}
try_version || try_git || try_hg || REV="unknown"
echo "$REV"