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|
#!/bin/sh
set -u
if test $# -ne 2 ; then
cat >>/dev/stderr <<EOF
Usage:
$0 <summarydir> <rutdir>
Identify the git revision of the earliest test result (based on commit
rank) in <summarydir>.
If there are no test results, use <rutdir>'s HEAD.
EOF
exit 1
fi
# paths need to be absolute as potentially cd'ing to $rutdir
bindir=$(cd $(dirname $0) && pwd)
summarydir=$(realpath $1) ; shift
rutdir=$1 ; shift
# Use the test results in ${summarydir} to create a list of hashes and
# then reduce that down to the earliest.
#
# Since the number of hashes can be large, use xargs.
#
# Since the number of hashes can be very large (i.e., xargs invokes
# its command multiple times), put the hashes through multiple
# invocations of merge-base. Hopefully two is enough.
hashes=$(ls ${summarydir} \
| xargs --no-run-if-empty \
${bindir}/gime-git-rev.sh \
| xargs --no-run-if-empty \
git -C ${rutdir} merge-base --octopus \
| xargs --no-run-if-empty \
git -C ${rutdir} merge-base --octopus \
)
if test -n "${hashes}" ; then
echo "${hashes}"
exit 0
fi
hash=$(git -C ${rutdir} show --no-patch --format=%H HEAD)
echo "No results in ${summarydir} using HEAD ${hash}" 1>&2
echo ${hash}
exit 0
|
