43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
/*
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Copyright 2022 Alibaba Group Holding Limited.
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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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*/
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package rows
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import (
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"errors"
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"fmt"
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"io"
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"github.com/alibaba/polardbx-operator/pkg/binlogtool/binlog/str"
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)
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// MYSQL_TYPE_VARCHAR, MYSQL_TYPE_VAR_STRING, MYSQL_TYPE_STRING
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func ExtractStringFromBlock(bs []byte, length uint64) (str.Str, error) {
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if uint64(len(bs)) < length {
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return nil, errors.New("not enough bytes")
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}
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return bs[:length], nil
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}
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func ExtractStringFromStream(r io.Reader, length uint64) (str.Str, error) {
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bs := make([]byte, length)
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if _, err := io.ReadFull(r, bs); err != nil {
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return nil, fmt.Errorf("unable to read: %w", err)
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}
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return bs, nil
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}
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