48 lines
1.1 KiB
Bash
Executable file
48 lines
1.1 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 "$REV" ]
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}
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try_git() {
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git rev-parse --git-dir >/dev/null 2>&1 || return 1
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[ -n "$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 | wc -l)"
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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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UPSTREAM_BASE="$(git merge-base $GET_REV origin/master)"
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UPSTREAM_REV="$(git rev-list reboot..$UPSTREAM_BASE | wc -l | awk '{print $1}')"
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REV="$(git rev-list reboot..$GET_REV | wc -l | awk '{print $1}')"
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if [ -n "$REV" -a -n "$UPSTREAM_REV" -a "$REV" -gt "$UPSTREAM_REV" ]; then
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REV="r${UPSTREAM_REV}+$((REV - UPSTREAM_REV))"
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else
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REV="${REV:+r$REV}"
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fi
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;;
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esac
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[ -n "$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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