Coverage Report - org.apache.maven.shared.utils.ReaderFactory
 
Classes in this File Line Coverage Branch Coverage Complexity
ReaderFactory
0%
0/9
N/A
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">HervĂ© 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  
 }