61 lines
1.6 KiB
Java
61 lines
1.6 KiB
Java
/*
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* Mint, (C) 2018 Minio, Inc.
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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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*
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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 io.minio.awssdk.tests;
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import java.io.*;
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// LimitedInputStream wraps a regular InputStream, calling
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// read() will skip some bytes as configured and will also
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// return only data with configured length
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class LimitedInputStream extends InputStream {
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private int skip;
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private int length;
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private InputStream is;
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LimitedInputStream(InputStream is, int skip, int length) {
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this.is = is;
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this.skip = skip;
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this.length = length;
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}
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@Override
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public int read() throws IOException {
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int r;
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while (skip > 0) {
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r = is.read();
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if (r < 0) {
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throw new IOException("stream ended before being able to skip all bytes");
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}
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skip--;
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}
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if (length == 0) {
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return -1;
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}
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r = is.read();
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if (r < 0) {
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throw new IOException("stream ended before being able to read all bytes");
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}
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length--;
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return r;
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}
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}
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