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1
50 package org.apache.avalon.excalibur.io;
51
52 import java.io.DataInput  ;
53 import java.io.EOFException ;
54 import java.io.IOException ;
55 import java.io.InputStream ;
56
57
64 public class SwappedDataInputStream
65 implements DataInput
66 {
67 private InputStream m_input;
69
70 public SwappedDataInputStream( final InputStream input )
71 {
72 m_input = input;
73 }
74
75 public boolean readBoolean()
76 throws IOException , EOFException
77 {
78 return ( 0 == readByte() );
79 }
80
81 public byte readByte()
82 throws IOException , EOFException
83 {
84 return (byte)m_input.read();
85 }
86
87 public char readChar()
88 throws IOException , EOFException
89 {
90 return (char)readShort();
91 }
92
93 public double readDouble()
94 throws IOException , EOFException
95 {
96 return EndianUtil.readSwappedDouble( m_input );
97 }
98
99 public float readFloat()
100 throws IOException , EOFException
101 {
102 return EndianUtil.readSwappedFloat( m_input );
103 }
104
105 public void readFully( final byte[] data )
106 throws IOException , EOFException
107 {
108 readFully( data, 0, data.length );
109 }
110
111 public void readFully( final byte[] data, final int offset, final int length )
112 throws IOException , EOFException
113 {
114 int remaining = length;
115
116 while( remaining > 0 )
117 {
118 final int location = offset + ( length - remaining );
119 final int count = read( data, location, remaining );
120
121 if( -1 == count )
122 {
123 throw new EOFException ();
124 }
125
126 remaining -= count;
127 }
128 }
129
130 public int readInt()
131 throws IOException , EOFException
132 {
133 return EndianUtil.readSwappedInteger( m_input );
134 }
135
136 public String readLine()
137 throws IOException , EOFException
138 {
139 throw new IOException ( "Operation not supported" );
140 }
141
142 public long readLong()
143 throws IOException , EOFException
144 {
145 return EndianUtil.readSwappedLong( m_input );
146 }
147
148 public short readShort()
149 throws IOException , EOFException
150 {
151 return EndianUtil.readSwappedShort( m_input );
152 }
153
154 public int readUnsignedByte()
155 throws IOException , EOFException
156 {
157 return m_input.read();
158 }
159
160 public int readUnsignedShort()
161 throws IOException , EOFException
162 {
163 return EndianUtil.readSwappedUnsignedShort( m_input );
164 }
165
166 public String readUTF()
167 throws IOException , EOFException
168 {
169 throw new IOException ( "Operation not supported" );
170 }
171
172 public int skipBytes( final int count )
173 throws IOException , EOFException
174 {
175 return (int)m_input.skip( count );
176 }
177
178 public int available()
179 throws IOException , EOFException
180 {
181 return m_input.available();
182 }
183
184 public void close()
185 throws IOException , EOFException
186 {
187 m_input.close();
188 }
189
190 public int read()
191 throws IOException , EOFException
192 {
193 return m_input.read();
194 }
195
196 public int read( final byte[] data )
197 throws IOException , EOFException
198 {
199 return read( data, 0, data.length );
200 }
201
202 public int read( final byte[] data, final int offset, final int length )
203 throws IOException , EOFException
204 {
205 return m_input.read( data, offset, length );
206 }
207
208 public long skip( final long count )
209 throws IOException , EOFException
210 {
211 return m_input.skip( count );
212 }
213
214 public void mark( final int readLimit )
215 {
216 m_input.mark( readLimit );
217 }
218
219 public boolean markSupported()
220 {
221 return m_input.markSupported();
222 }
223
224 public void reset()
225 throws IOException
226 {
227 m_input.reset();
228 }
229 }
230 |
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