70 lines
1.5 KiB
Bash
Executable File
70 lines
1.5 KiB
Bash
Executable File
#!/bin/ash
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# Copyright 2021 Alibaba Group Holding Limited.
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#
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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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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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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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set -e
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if [[ $# -lt 1 ]]; then
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echo "$0 [target dir]"
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fi
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TARGET_DIR=$1
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if [ ! -d "$TARGET_DIR" ]; then
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echo "target dir not exists"
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exit 1
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fi
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SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
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TOOLS_DIR="$SCRIPT_DIR/.."
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if [ ! -f "$TOOLS_DIR"/version ]; then
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echo "version file not exists"
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exit 1
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fi
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VERSION="$(cat "$TOOLS_DIR"/version)"
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if [ -z "$VERSION" ]; then
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echo "version is empty"
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exit 1
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fi
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echo "version: $VERSION"
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VERSION_DIR="$TARGET_DIR"/"$VERSION"
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LINK_VALUE=""
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if [ -h "$TARGET_DIR"/current ]; then
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LINK_VALUE="$(readlink "$TARGET_DIR"/current)"
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fi
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if [[ "$LINK_VALUE" == "$VERSION" ]]; then
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echo "up-to-date! exit!"
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exit 0
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fi
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# Copy to temp
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rm -rf "$VERSION_DIR" && mkdir -p "$VERSION_DIR"
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cp -Rp "$TOOLS_DIR"/. "$VERSION_DIR"
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# Not atomic
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cd "$TARGET_DIR" && ln -sfn "$VERSION" current
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# Clean old files
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if [ -n "$LINK_VALUE" ]; then
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rm -rf "$LINK_VALUE"
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fi
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echo "updated!"
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