| Clover coverage report - Maven Clover report |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| SharedByteArrayInputStream.java | 50% | 77.8% | 100% | 76.5% |
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| 1 | /** | |
| 2 | * | |
| 3 | * Copyright 2006 The Apache Software Foundation | |
| 4 | * | |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 | * you may not use this file except in compliance with the License. | |
| 7 | * You may obtain a copy of the License at | |
| 8 | * | |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 | * | |
| 11 | * Unless required by applicable law or agreed to in writing, software | |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 | * See the License for the specific language governing permissions and | |
| 15 | * limitations under the License. | |
| 16 | */ | |
| 17 | ||
| 18 | package javax.mail.util; | |
| 19 | ||
| 20 | import java.io.ByteArrayInputStream; | |
| 21 | import java.io.IOException; | |
| 22 | import java.io.InputStream; | |
| 23 | ||
| 24 | import javax.mail.internet.SharedInputStream; | |
| 25 | ||
| 26 | public class SharedByteArrayInputStream extends ByteArrayInputStream implements SharedInputStream { | |
| 27 | ||
| 28 | /** | |
| 29 | * Position within shared buffer that this stream starts at. | |
| 30 | */ | |
| 31 | protected int start; | |
| 32 | ||
| 33 | /** | |
| 34 | * Create a SharedByteArrayInputStream that shares the entire | |
| 35 | * buffer. | |
| 36 | * | |
| 37 | * @param buf The input data. | |
| 38 | */ | |
| 39 | 2 | public SharedByteArrayInputStream(byte[] buf) { |
| 40 | 2 | this(buf, 0, buf.length); |
| 41 | } | |
| 42 | ||
| 43 | ||
| 44 | /** | |
| 45 | * Create a SharedByteArrayInputStream using a subset of the | |
| 46 | * array data. | |
| 47 | * | |
| 48 | * @param buf The source data array. | |
| 49 | * @param offset The starting offset within the array. | |
| 50 | * @param length The length of data to use. | |
| 51 | */ | |
| 52 | 4 | public SharedByteArrayInputStream(byte[] buf, int offset, int length) { |
| 53 | 4 | super(buf, offset, length); |
| 54 | 4 | start = offset; |
| 55 | } | |
| 56 | ||
| 57 | ||
| 58 | /** | |
| 59 | * Get the position within the output stream, adjusted by the | |
| 60 | * starting offset. | |
| 61 | * | |
| 62 | * @return The adjusted position within the stream. | |
| 63 | */ | |
| 64 | 7 | public long getPosition() { |
| 65 | 7 | return pos - start; |
| 66 | } | |
| 67 | ||
| 68 | ||
| 69 | /** | |
| 70 | * Create a new input stream from this input stream, accessing | |
| 71 | * a subset of the data. Think of it as a substring operation | |
| 72 | * for a stream. | |
| 73 | * | |
| 74 | * The starting offset must be non-negative. The end offset can | |
| 75 | * by -1, which means use the remainder of the stream. | |
| 76 | * | |
| 77 | * @param offset The starting offset. | |
| 78 | * @param end The end offset (which can be -1). | |
| 79 | * | |
| 80 | * @return An InputStream configured to access the indicated data subrange. | |
| 81 | */ | |
| 82 | 2 | public InputStream newStream(long offset, long end) { |
| 83 | 2 | if (offset < 0) { |
| 84 | 0 | throw new IllegalArgumentException("Starting position must be non-negative"); |
| 85 | } | |
| 86 | 2 | if (end == -1) { |
| 87 | 0 | end = count - start; |
| 88 | } | |
| 89 | 2 | return new SharedByteArrayInputStream(buf, start + (int)offset, (int)(end - offset)); |
| 90 | } | |
| 91 | } |
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