Jonas Gorski 1001b5d77c scripts/getver.sh: allow conversion between git hash and revision
Add code allowing easy conversion between git commit ids and revisions.

Example:

$ ./scripts/getver.sh
r792
$ ./scripts/getver.sh r123
b7fc892eb56b52d25bc00578af9d1ee058dcf6b3
$ ./scrpts/getver.sh b7fc892eb56b52d25bc00578af9d1ee058dcf6b3
r123

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
2016-07-09 13:41:28 +02:00

44 lines
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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 "$REV" ]
}
try_git() {
git rev-parse --git-dir >/dev/null 2>&1 || return 1
[ -n "$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 --count)"
REV="$(git rev-parse HEAD~$((BASE_REV - GET_REV)))"
;;
*)
REV="$(git rev-list reboot..$GET_REV --count)"
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"