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#!/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 $TOPDIR
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try_version() {
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[ -f version ] || return 1
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REV="$(cat version)"
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[ -n "$REV" ]
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}
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try_svn() {
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[ -d .svn ] || return 1
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REV="$(svn info | awk '/^Revision:/ { print $2 }')"
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REV="${REV:+r$REV}"
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[ -n "$REV" ]
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}
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try_git() {
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[ -d .git ] || return 1
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REV="$(git log | grep -m 1 git-svn-id | awk '{ gsub(/.*@/, "", $2); print $2 }')"
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REV="${REV:+r$REV}"
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[ -n "$REV" ]
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}
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try_version || try_svn || try_git || REV="unknown"
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echo "$REV"
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