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48 lines
819 B
48 lines
819 B
#!/bin/sh
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#
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# USAGE: git-short-commit.sh <GIT_URL> <GIT_REF> <GIT_DIR>
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#
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set -e
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error() {
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echo "ERROR: ${*}" >&2
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exit 1
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}
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GIT_URL="${1}"
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if [ -z "${GIT_URL}" ]; then
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error "Git URL not specified"
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fi
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GIT_REF="${2}"
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if [ -z "${GIT_REF}" ]; then
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error "Git reference not specified"
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fi
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GIT_DIR="${3}"
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if [ -z "${GIT_DIR}" ]; then
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error "Git clone directory not specified"
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fi
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clean_up() {
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rm --force --recursive "${GIT_DIR}"
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}
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trap clean_up EXIT
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git init --quiet "${GIT_DIR}"
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(
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cd "${GIT_DIR}"
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for PREFIX in "" "https://" "http://" "git@"; do
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echo "Trying remote '${PREFIX}${GIT_URL}'" >&2
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git remote add origin "${PREFIX}${GIT_URL}"
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if git fetch --depth 1 origin "${GIT_REF}"; then
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git checkout --detach FETCH_HEAD --
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git rev-parse --short HEAD
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break
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fi
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git remote remove origin
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done
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)
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