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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 18:11:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 18:11:55 +0000 |
commit | 5edd1635e6e67adc18d05795cf10dee10a99811b (patch) | |
tree | 28f214bdb516789ceefe88dba26471e2cce84b7c /reader.go | |
parent | Initial commit. (diff) | |
download | golang-github-containers-ocicrypt-5edd1635e6e67adc18d05795cf10dee10a99811b.tar.xz golang-github-containers-ocicrypt-5edd1635e6e67adc18d05795cf10dee10a99811b.zip |
Adding upstream version 1.1.9.upstream/1.1.9upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'reader.go')
-rw-r--r-- | reader.go | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/reader.go b/reader.go new file mode 100644 index 0000000..a93eec8 --- /dev/null +++ b/reader.go @@ -0,0 +1,40 @@ +/* + Copyright The ocicrypt Authors. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +package ocicrypt + +import ( + "io" +) + +type readerAtReader struct { + r io.ReaderAt + off int64 +} + +// ReaderFromReaderAt takes an io.ReaderAt and returns an io.Reader +func ReaderFromReaderAt(r io.ReaderAt) io.Reader { + return &readerAtReader{ + r: r, + off: 0, + } +} + +func (rar *readerAtReader) Read(p []byte) (n int, err error) { + n, err = rar.r.ReadAt(p, rar.off) + rar.off += int64(n) + return n, err +} |