Initial commit

scripts/getver.sh

@@ -0,0 +1,59 @@
+#!/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 2>/dev/null | wc -l | awk '{print $1}')"
+		[ $((BASE_REV - GET_REV)) -ge 0 ] && REV="$(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="$(git rev-parse --verify --symbolic-full-name main@{u} 2>/dev/null)"
+		REV="$(git rev-list ${REBOOT}..$GET_REV 2>/dev/null | 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 2>/dev/null | wc -l | awk '{print $1}')"
+		else
+			UPSTREAM_REV=0
+		fi
+
+		if [ "$REV" -gt "$UPSTREAM_REV" ]; then
+			REV="${UPSTREAM_REV}+$((REV - UPSTREAM_REV))"
+		fi
+
+		REV="${REV:+r$REV-$(git log -n 1 --format="%h" $UPSTREAM_BASE)}"
+
+		;;
+	esac
+
+	[ -n "$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"