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40 lines
1.2 KiB
Bash
40 lines
1.2 KiB
Bash
#!/usr/bin/env sh
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# Copyright 2018-2020 Docker Inc.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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checkout() (
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set -ex
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SRC="$1"
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REF="$2"
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REF_FETCH="$REF"
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# if ref is branch or tag, retrieve its canonical form
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REF=$(git -C "$SRC" ls-remote --refs --heads --tags origin "$REF" | awk '{print $2}')
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if [ -n "$REF" ]; then
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# if branch or tag then create it locally too
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REF_FETCH="$REF:$REF"
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else
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REF="FETCH_HEAD"
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fi
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git -C "$SRC" fetch --update-head-ok --depth 1 origin "$REF_FETCH"
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git -C "$SRC" checkout -q "$REF"
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)
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# Only execute checkout function above if this file is executed, not sourced from another script
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prog=checkout.sh # needs to be in sync with this file's name
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if [ "$(basename -- $0)" = "$prog" ]; then
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checkout $*
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fi
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