Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ReaderFactory |
|
| 1.0;1 |
1 | package org.apache.maven.shared.utils; | |
2 | ||
3 | /* | |
4 | * Licensed to the Apache Software Foundation (ASF) under one | |
5 | * or more contributor license agreements. See the NOTICE file | |
6 | * distributed with this work for additional information | |
7 | * regarding copyright ownership. The ASF licenses this file | |
8 | * to you under the Apache License, Version 2.0 (the | |
9 | * "License"); you may not use this file except in compliance | |
10 | * with the License. You may obtain a copy of the License at | |
11 | * | |
12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
13 | * | |
14 | * Unless required by applicable law or agreed to in writing, | |
15 | * software distributed under the License is distributed on an | |
16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
17 | * KIND, either express or implied. See the License for the | |
18 | * specific language governing permissions and limitations | |
19 | * under the License. | |
20 | */ | |
21 | ||
22 | import java.io.File; | |
23 | import java.io.FileInputStream; | |
24 | import java.io.FileNotFoundException; | |
25 | import java.io.FileReader; | |
26 | import java.io.IOException; | |
27 | import java.io.InputStream; | |
28 | import java.io.InputStreamReader; | |
29 | import java.io.Reader; | |
30 | import java.io.UnsupportedEncodingException; | |
31 | import java.net.URL; | |
32 | import java.nio.charset.Charset; | |
33 | import org.apache.commons.io.input.XmlStreamReader; | |
34 | ||
35 | import javax.annotation.Nonnull; | |
36 | ||
37 | ||
38 | /** | |
39 | * Utility to create Readers from streams, with explicit encoding choice: platform default, | |
40 | * XML, or specified. | |
41 | * | |
42 | * @author <a href="mailto:hboutemy@apache.org">Hervé Boutemy</a> | |
43 | * @see Charset | |
44 | * @see <a href="http://docs.oracle.com/javase/1.5.0/docs/guide/intl/encoding.doc.html">Supported encodings</a> | |
45 | * | |
46 | */ | |
47 | 0 | public class ReaderFactory |
48 | { | |
49 | /** | |
50 | * ISO Latin Alphabet #1, also known as ISO-LATIN-1. | |
51 | * Every implementation of the Java platform is required to support this character encoding. | |
52 | * | |
53 | * @see Charset | |
54 | */ | |
55 | public static final String ISO_8859_1 = "ISO-8859-1"; | |
56 | ||
57 | /** | |
58 | * Seven-bit ASCII, also known as ISO646-US, also known as the Basic Latin block of the Unicode character set. | |
59 | * Every implementation of the Java platform is required to support this character encoding. | |
60 | * | |
61 | * @see Charset | |
62 | */ | |
63 | public static final String US_ASCII = "US-ASCII"; | |
64 | ||
65 | /** | |
66 | * Sixteen-bit Unicode Transformation Format, byte order specified by a mandatory initial byte-order mark (either | |
67 | * order accepted on input, big-endian used on output). | |
68 | * Every implementation of the Java platform is required to support this character encoding. | |
69 | * | |
70 | * @see Charset | |
71 | */ | |
72 | public static final String UTF_16 = "UTF-16"; | |
73 | ||
74 | /** | |
75 | * Sixteen-bit Unicode Transformation Format, big-endian byte order. | |
76 | * Every implementation of the Java platform is required to support this character encoding. | |
77 | * | |
78 | * @see Charset | |
79 | */ | |
80 | public static final String UTF_16BE = "UTF-16BE"; | |
81 | ||
82 | /** | |
83 | * Sixteen-bit Unicode Transformation Format, little-endian byte order. | |
84 | * Every implementation of the Java platform is required to support this character encoding. | |
85 | * | |
86 | * @see Charset | |
87 | */ | |
88 | public static final String UTF_16LE = "UTF-16LE"; | |
89 | ||
90 | /** | |
91 | * Eight-bit Unicode Transformation Format. | |
92 | * Every implementation of the Java platform is required to support this character encoding. | |
93 | * | |
94 | * @see Charset | |
95 | */ | |
96 | public static final String UTF_8 = "UTF-8"; | |
97 | ||
98 | /** | |
99 | * The <code>file.encoding</code> System Property. | |
100 | */ | |
101 | 0 | public static final String FILE_ENCODING = System.getProperty( "file.encoding" ); |
102 | ||
103 | /** | |
104 | * Create a new Reader with XML encoding detection rules. | |
105 | * | |
106 | * @param in not null input stream. | |
107 | * @return an XML reader instance for the input stream. | |
108 | * @throws IOException if any. | |
109 | * @see XmlStreamReader | |
110 | */ | |
111 | public static Reader newXmlReader( @Nonnull InputStream in ) | |
112 | throws IOException | |
113 | { | |
114 | 0 | return new XmlStreamReader( in ); |
115 | } | |
116 | ||
117 | /** | |
118 | * Create a new Reader with XML encoding detection rules. | |
119 | * | |
120 | * @param file not null file. | |
121 | * @return an XML reader instance for the input file. | |
122 | * @throws IOException if any. | |
123 | * @see XmlStreamReader | |
124 | */ | |
125 | public static Reader newXmlReader( @Nonnull File file ) | |
126 | throws IOException | |
127 | { | |
128 | 0 | return new XmlStreamReader( file ); |
129 | } | |
130 | ||
131 | /** | |
132 | * Create a new Reader with XML encoding detection rules. | |
133 | * | |
134 | * @param url not null url. | |
135 | * @return an XML reader instance for the input url. | |
136 | * @throws IOException if any. | |
137 | * @see XmlStreamReader | |
138 | */ | |
139 | public static Reader newXmlReader( @Nonnull URL url ) | |
140 | throws IOException | |
141 | { | |
142 | 0 | return new XmlStreamReader( url ); |
143 | } | |
144 | ||
145 | /** | |
146 | * Create a new Reader with default plaform encoding. | |
147 | * | |
148 | * @param file not null file. | |
149 | * @return a reader instance for the input file using the default platform charset. | |
150 | * @throws FileNotFoundException if any. | |
151 | * @see Charset#defaultCharset() | |
152 | */ | |
153 | public static Reader newPlatformReader( @Nonnull File file ) | |
154 | throws FileNotFoundException | |
155 | { | |
156 | 0 | return new FileReader( file ); |
157 | } | |
158 | ||
159 | /** | |
160 | * Create a new Reader with specified encoding. | |
161 | * | |
162 | * @param in not null input stream. | |
163 | * @param encoding not null supported encoding. | |
164 | * @return a reader instance for the input stream using the given encoding. | |
165 | * @throws UnsupportedEncodingException if any. | |
166 | * @see <a href="http://docs.oracle.com/javase/1.5.0/docs/guide/intl/encoding.doc.html">Supported encodings</a> | |
167 | */ | |
168 | public static Reader newReader( @Nonnull InputStream in, @Nonnull String encoding ) | |
169 | throws UnsupportedEncodingException | |
170 | { | |
171 | 0 | return new InputStreamReader( in, encoding ); |
172 | } | |
173 | ||
174 | /** | |
175 | * Create a new Reader with specified encoding. | |
176 | * | |
177 | * @param file not null file. | |
178 | * @param encoding not null supported encoding. | |
179 | * @return a reader instance for the input file using the given encoding. | |
180 | * @throws FileNotFoundException if any. | |
181 | * @throws UnsupportedEncodingException if any. | |
182 | * @see <a href="http://docs.oracle.com/javase/1.5.0/docs/guide/intl/encoding.doc.html">Supported encodings</a> | |
183 | */ | |
184 | public static Reader newReader( @Nonnull File file, @Nonnull String encoding ) | |
185 | throws FileNotFoundException, UnsupportedEncodingException | |
186 | { | |
187 | 0 | return new InputStreamReader( new FileInputStream( file ), encoding ); |
188 | } | |
189 | ||
190 | /** | |
191 | * Create a new Reader with specified encoding. | |
192 | * | |
193 | * @param url not null url. | |
194 | * @param encoding not null supported encoding. | |
195 | * @return a reader instance for the input url using the given encoding. | |
196 | * @throws IOException if any. | |
197 | * @see <a href="http://docs.oracle.com/javase/1.5.0/docs/guide/intl/encoding.doc.html">Supported encodings</a> | |
198 | */ | |
199 | public static Reader newReader( @Nonnull URL url, @Nonnull String encoding ) | |
200 | throws IOException | |
201 | { | |
202 | 0 | return new InputStreamReader( url.openStream(), encoding ); |
203 | } | |
204 | } |