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41 lines
996 B
Go
41 lines
996 B
Go
/*
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Copyright The ocicrypt Authors.
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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 ocicrypt
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import (
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"io"
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)
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type readerAtReader struct {
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r io.ReaderAt
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off int64
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}
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// ReaderFromReaderAt takes an io.ReaderAt and returns an io.Reader
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func ReaderFromReaderAt(r io.ReaderAt) io.Reader {
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return &readerAtReader{
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r: r,
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off: 0,
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}
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}
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func (rar *readerAtReader) Read(p []byte) (n int, err error) {
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n, err = rar.r.ReadAt(p, rar.off)
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rar.off += int64(n)
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return n, err
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}
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