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1
32 package com.imagero.uio;
33
34 import java.io.EOFException  ;
35 import java.io.IOException ;
36 import java.io.RandomAccessFile ;
37 import java.lang.reflect.Method ;
38
39
49 public class RandomAccessFileWrapper extends AbstractRandomAccess {
50
51 RandomAccessFile in;
52
53 public RandomAccessFileWrapper(RandomAccessFile in, int byteOrder) throws IOException {
54 this.in = in;
55 _setByteOrder(byteOrder);
56 }
57
58 protected int _read() throws IOException {
59 int i = in.read();
60 if(i < 0) {
61 throw new EOFException ();
62 }
63 return i;
64 }
65
66 public void write(int b) throws IOException {
67 in.write(b);
68 }
69
70 public void write(byte b[]) throws IOException {
71 in.write(b);
72 }
73
74 public void write(byte b[], int off, int len) throws IOException {
75 in.write(b, off, len);
76 }
77
78 public long getFilePointer() throws IOException {
79 return in.getFilePointer();
80 }
81
82 public long length() throws IOException {
83 return in.length();
84 }
85
86 public void seek(long offset) throws IOException {
87 in.seek(offset);
88 }
89
90 public int read() throws IOException {
91 return in.read();
92 }
93
94 public int skip(int n) throws IOException {
95 return in.skipBytes(n);
96 }
97
98 public void close() throws IOException {
99 in.close();
100 }
101
102 public int read(byte[] b) throws IOException {
103 return read(b, 0, b.length);
104 }
105
106 public int read(byte[] b, int off, int len) throws IOException {
107 return in.read(b, off, len);
108 }
109
110
118 public void setLength(long newLength) throws IOException {
119 try {
120 Class aClass = Class.forName("java.io.RandomAccessFile");
121 Method method = aClass.getMethod("setLength", new Class []{Long .class});
122 method.invoke(in, new Object []{new Long (newLength)});
123 }
124 catch(Exception ex) {
125 if(newLength > in.length()) {
126 long pos = getFilePointer();
127 seek(newLength);
128 write(0);
129 seek(pos);
130 }
131 }
132 }
133 }
134 |
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