Shallow copies are quite common on CI platforms nowadays, making REBOOT tag unavailable, thus producing following confusing errors in the build logs: fatal: Invalid revision range ee53a240ac902dc83209008a2671e7fdcf55957a..HEAD fatal: Invalid revision range ee53a240ac902dc83209008a2671e7fdcf55957a..0493d57e04774d47921a7d2014b567455d5dc16b Signed-off-by: Petr Štetiar <ynezz@true.cz>
		
			
				
	
	
		
			60 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Bash
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			60 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			Bash
		
	
	
		
			Executable File
		
	
	
	
	
#!/usr/bin/env bash
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export LANG=C
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export LC_ALL=C
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[ -n "$TOPDIR" ] && cd $TOPDIR
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GET_REV=$1
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try_version() {
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	[ -f version ] || return 1
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	REV="$(cat version)"
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	[ -n "$REV" ]
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}
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try_git() {
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	REBOOT=ee53a240ac902dc83209008a2671e7fdcf55957a
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	git rev-parse --git-dir >/dev/null 2>&1 || return 1
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	[ -n "$GET_REV" ] || GET_REV="HEAD"
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	case "$GET_REV" in
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	r*)
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		GET_REV="$(echo $GET_REV | tr -d 'r')"
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		BASE_REV="$(git rev-list ${REBOOT}..HEAD 2>/dev/null | wc -l | awk '{print $1}')"
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		REV="$(git rev-parse HEAD~$((BASE_REV - GET_REV)))"
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		;;
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	*)
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		BRANCH="$(git rev-parse --abbrev-ref HEAD)"
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		ORIGIN="$(git rev-parse --verify --symbolic-full-name ${BRANCH}@{u} 2>/dev/null)"
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		[ -n "$ORIGIN" ] || ORIGIN="$(git rev-parse --verify --symbolic-full-name master@{u} 2>/dev/null)"
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		REV="$(git rev-list ${REBOOT}..$GET_REV 2>/dev/null | wc -l | awk '{print $1}')"
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		if [ -n "$ORIGIN" ]; then
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			UPSTREAM_BASE="$(git merge-base $GET_REV $ORIGIN)"
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			UPSTREAM_REV="$(git rev-list ${REBOOT}..$UPSTREAM_BASE 2>/dev/null | wc -l | awk '{print $1}')"
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		else
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			UPSTREAM_REV=0
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		fi
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		if [ "$REV" -gt "$UPSTREAM_REV" ]; then
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			REV="${UPSTREAM_REV}+$((REV - UPSTREAM_REV))"
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		fi
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		REV="${REV:+r$REV-$(git log -n 1 --format="%h" $UPSTREAM_BASE)}"
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		;;
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	esac
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	[ -n "$REV" ]
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}
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try_hg() {
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	[ -d .hg ] || return 1
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	REV="$(hg log -r-1 --template '{desc}' | awk '{print $2}' | sed 's/\].*//')"
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	REV="${REV:+r$REV}"
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	[ -n "$REV" ]
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}
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try_version || try_git || try_hg || REV="unknown"
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echo "$REV"
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