| 1 | package com.renomad.minum.web; | |
| 2 | ||
| 3 | import java.io.ByteArrayOutputStream; | |
| 4 | import java.io.IOException; | |
| 5 | import java.io.InputStream; | |
| 6 | ||
| 7 | /** | |
| 8 | * This class enables pulling key-value pairs one at a time | |
| 9 | * from the Request body. This enables the developer to pull data | |
| 10 | * incrementally, rather than reading it all into memory at once. | |
| 11 | */ | |
| 12 | public class UrlEncodedDataGetter extends InputStream { | |
| 13 | private final InputStream inputStream; | |
| 14 | private final CountBytesRead countBytesRead; | |
| 15 | private final long contentLength; | |
| 16 | /** | |
| 17 | * After we hit the boundary, we will set this flag to true, and all | |
| 18 | * subsequent reads will return -1. | |
| 19 | */ | |
| 20 | private boolean isFinished = false; | |
| 21 | ||
| 22 | UrlEncodedDataGetter(InputStream inputStream, CountBytesRead countBytesRead, long contentLength) { | |
| 23 | this.inputStream = inputStream; | |
| 24 | this.countBytesRead = countBytesRead; | |
| 25 | this.contentLength = contentLength; | |
| 26 | } | |
| 27 | ||
| 28 | /** | |
| 29 | * Mostly similar behavior to {@link InputStream#read()} | |
| 30 | * @throws IOException if the inputstream is closed unexpectedly while reading. | |
| 31 | */ | |
| 32 | @Override | |
| 33 | public int read() throws IOException { | |
| 34 |
1
1. read : negated conditional → KILLED |
if (isFinished) { |
| 35 |
1
1. read : replaced int return with 0 for com/renomad/minum/web/UrlEncodedDataGetter::read → TIMED_OUT |
return -1; |
| 36 | } | |
| 37 |
1
1. read : negated conditional → KILLED |
if (countBytesRead.getCount() == contentLength) { |
| 38 | isFinished = true; | |
| 39 |
1
1. read : replaced int return with 0 for com/renomad/minum/web/UrlEncodedDataGetter::read → KILLED |
return -1; |
| 40 | } | |
| 41 | int result = inputStream.read(); | |
| 42 | ||
| 43 |
1
1. read : negated conditional → KILLED |
if (result == -1) { |
| 44 | isFinished = true; | |
| 45 | // I know this is surprising, however: Because we always have the content length while reading the body, | |
| 46 | // we know exactly when we expect to read the last byte. If we read and get a -1, it means | |
| 47 | // the stream is closed - but that should not have happened, because we should have stopped reading when | |
| 48 | // we hit the limit of bytes to read. But in the real world, it will happen: You can observe it by uploading a large | |
| 49 | // file and using the browser's "stop" button during the upload. | |
| 50 | throw new IOException("Error: The inputstream has closed unexpectedly while reading"); | |
| 51 | } | |
| 52 | ||
| 53 |
1
1. read : removed call to com/renomad/minum/web/CountBytesRead::increment → KILLED |
countBytesRead.increment(); |
| 54 | char byteValue = (char) result; | |
| 55 |
1
1. read : negated conditional → KILLED |
if (byteValue == '&') { |
| 56 | isFinished = true; | |
| 57 |
1
1. read : replaced int return with 0 for com/renomad/minum/web/UrlEncodedDataGetter::read → KILLED |
return -1; |
| 58 | } | |
| 59 |
1
1. read : replaced int return with 0 for com/renomad/minum/web/UrlEncodedDataGetter::read → KILLED |
return result; |
| 60 | } | |
| 61 | ||
| 62 | @Override | |
| 63 | public byte[] readAllBytes() throws IOException { | |
| 64 | var baos = new ByteArrayOutputStream(); | |
| 65 | while (true) { | |
| 66 | int result = read(); | |
| 67 |
1
1. readAllBytes : negated conditional → KILLED |
if (result == -1) { |
| 68 | // if our read function determines we are at the end of the value, | |
| 69 | // because we encountered an ampersand, it will return a -1 value, | |
| 70 | // and we return our value - but more keys and values expected. | |
| 71 |
1
1. readAllBytes : replaced return value with null for com/renomad/minum/web/UrlEncodedDataGetter::readAllBytes → KILLED |
return baos.toByteArray(); |
| 72 | } | |
| 73 |
1
1. readAllBytes : removed call to java/io/ByteArrayOutputStream::write → KILLED |
baos.write((byte)result); |
| 74 | } | |
| 75 | } | |
| 76 | ||
| 77 | /** | |
| 78 | * By "close", we will read from the {@link InputStream} until we have finished the body, | |
| 79 | * so that our InputStream has been read until the start of the next partition. | |
| 80 | */ | |
| 81 | @Override | |
| 82 | public void close() throws IOException { | |
| 83 | while (true) { | |
| 84 | int result = read(); | |
| 85 |
1
1. close : negated conditional → TIMED_OUT |
if (result == -1) { |
| 86 | return; | |
| 87 | } | |
| 88 | } | |
| 89 | } | |
| 90 | } | |
Mutations | ||
| 34 |
1.1 |
|
| 35 |
1.1 |
|
| 37 |
1.1 |
|
| 39 |
1.1 |
|
| 43 |
1.1 |
|
| 53 |
1.1 |
|
| 55 |
1.1 |
|
| 57 |
1.1 |
|
| 59 |
1.1 |
|
| 67 |
1.1 |
|
| 71 |
1.1 |
|
| 73 |
1.1 |
|
| 85 |
1.1 |