##### Coverage Report - org.apache.any23.util.StreamUtils

Classes in this File | Line Coverage | Branch Coverage | Complexity
StreamUtils |
0% | 0/24
0% | 0/10
| 2.8;2.8

1 |  |
     /*
2 |  |
      * Licensed to the Apache Software Foundation (ASF) under one or more
3 |  |
      * contributor license agreements.  See the NOTICE file distributed with
4 |  |
      * this work for additional information regarding copyright ownership.
5 |  |
      * The ASF licenses this file to You under the Apache License, Version 2.0
6 |  |
      * (the "License"); you may not use this file except in compliance with
7 |  |
      * the License.  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 org.apache.any23.util;
19 |  |
20 |  |
     import org.slf4j.Logger;
21 |  |
     import org.slf4j.LoggerFactory;
22 |  |
23 |  |
     import java.io.BufferedReader;
24 |  |
     import java.io.Closeable;
25 |  |
     import java.io.IOException;
26 |  |
     import java.io.InputStream;
27 |  |
     import java.io.InputStreamReader;
28 |  |
     import java.util.ArrayList;
29 |  |
     import java.util.List;
30 |  |
31 |  |
     /**
32 |  |
      * Contains general utility functions for handling streams.
33 |  |
      *
34 |  |
      * @author Michele Mostarda (mostarda@fbk.eu)
35 |  |
      */
36 |  |
     public class StreamUtils {
37 |  |
38 | 0 |
         private static final Logger logger = LoggerFactory.getLogger(StreamUtils.class);
39 |  |
40 | 0 |
         private StreamUtils(){}
41 |  |
42 |  |
         /**
43 |  |
          * Returns all the lines read from an input stream.
44 |  |
          *
45 |  |
          * @param is input stream.
46 |  |
          * @return list of not <code>null</code> lines.
47 |  |
          * @throws IOException
48 |  |
          */
49 |  |
         public static String[] asLines(InputStream is) throws IOException {
50 | 0 |
             final BufferedReader br = new BufferedReader(new InputStreamReader(is));
51 | 0 |
             final List<String> lines = new ArrayList<String>();
52 |  |
             try {
53 |  |
                 String line;
54 | 0 |
                 while ((line = br.readLine()) != null) {
55 | 0 |
                     lines.add(line);
56 |  |
                 }
57 | 0 |
                 return lines.toArray( new String[ lines.size() ] );
58 |  |
             } finally {
59 | 0 |
                 closeGracefully(br);
60 |  |
             }
61 |  |
         }
62 |  |
63 |  |
         /**
64 |  |
          * Returns the string content of a stream.
65 |  |
          *
66 |  |
          * @param is input stream.
67 |  |
          * @param preserveNL preserves new line chars.
68 |  |
          * @return the string content.
69 |  |
          * @throws IOException if an error occurs while consuming the <code>is</code> stream.
70 |  |
          */
71 |  |
         public static String asString(InputStream is, boolean preserveNL) throws IOException {
72 | 0 |
             if (is == null) {
73 | 0 |
                 throw new NullPointerException("input stream is null.");
74 |  |
             }
75 | 0 |
             final BufferedReader br = new BufferedReader(new InputStreamReader(is));
76 |  |
             try {
77 | 0 |
                 final StringBuilder content = new StringBuilder();
78 |  |
                 String line;
79 | 0 |
                 while ((line = br.readLine()) != null) {
80 | 0 |
                     content.append(line);
81 | 0 |
                     if(preserveNL) content.append('\n');
82 |  |
                 }
83 | 0 |
                 return content.toString();
84 |  |
             } finally {
85 | 0 |
                 closeGracefully(br);
86 |  |
             }
87 |  |
         }
88 |  |
89 |  |
         /**
90 |  |
          * Returns the string content of a stream, new line chars will be removed.
91 |  |
          *
92 |  |
          * @param is input stream.
93 |  |
          * @return the string content.
94 |  |
          * @throws IOException if an error occurs while consuming the <code>is</code> stream.
95 |  |
          */
96 |  |
          public static String asString(InputStream is) throws IOException {
97 | 0 |
              return asString(is, false);
98 |  |
          }
99 |  |
100 |  |
         /**
101 |  |
          * Closes the closable interface and reports error if any.
102 |  |
          *
103 |  |
          * @param closable the closable object to be closed.
104 |  |
          */
105 |  |
         public static void closeGracefully(Closeable closable) {
106 | 0 |
             if (closable != null) {
107 |  |
                 try {
108 | 0 |
                     closable.close();
109 | 0 |
                 } catch (Exception e) {
110 | 0 |
                     logger.error("Error while closing object " + closable, e);
111 | 0 |
                 }
112 |  |
             }
113 | 0 |
         }
114 |  |
115 |  |
     }