| 1 | |
|
| 2 | |
|
| 3 | |
|
| 4 | |
|
| 5 | |
|
| 6 | |
|
| 7 | |
|
| 8 | |
|
| 9 | |
|
| 10 | |
|
| 11 | |
|
| 12 | |
|
| 13 | |
|
| 14 | |
|
| 15 | |
|
| 16 | |
|
| 17 | |
|
| 18 | |
|
| 19 | |
|
| 20 | |
|
| 21 | |
|
| 22 | |
|
| 23 | |
|
| 24 | |
package org.webmacro.util; |
| 25 | |
|
| 26 | |
import java.io.IOException; |
| 27 | |
import java.io.OutputStream; |
| 28 | |
import java.io.UnsupportedEncodingException; |
| 29 | |
|
| 30 | |
|
| 31 | |
|
| 32 | |
|
| 33 | |
final public class ByteBufferOutputStream extends OutputStream |
| 34 | |
{ |
| 35 | |
|
| 36 | |
private byte[] _buf; |
| 37 | |
private int _pos; |
| 38 | |
|
| 39 | |
|
| 40 | |
|
| 41 | |
|
| 42 | |
public ByteBufferOutputStream (int size) |
| 43 | 1734 | { |
| 44 | 1734 | _buf = new byte[size]; |
| 45 | 1734 | _pos = 0; |
| 46 | 1734 | } |
| 47 | |
|
| 48 | |
|
| 49 | |
|
| 50 | |
|
| 51 | |
|
| 52 | |
public void reset () |
| 53 | |
{ |
| 54 | 1788 | _pos = 0; |
| 55 | 1788 | } |
| 56 | |
|
| 57 | |
public void write (int i) |
| 58 | |
{ |
| 59 | 0 | write((byte) i); |
| 60 | 0 | } |
| 61 | |
|
| 62 | |
|
| 63 | |
|
| 64 | |
|
| 65 | |
public void write (byte[] b) |
| 66 | |
{ |
| 67 | 0 | int len = b.length; |
| 68 | 0 | ensureCapacity(len); |
| 69 | 0 | System.arraycopy(b, 0, _buf, _pos, len); |
| 70 | 0 | _pos += len; |
| 71 | 0 | } |
| 72 | |
|
| 73 | |
|
| 74 | |
|
| 75 | |
|
| 76 | |
public void write (byte[] b, int offset, int len) |
| 77 | |
{ |
| 78 | 233016 | ensureCapacity(len); |
| 79 | 233016 | System.arraycopy(b, 0, _buf, _pos, len); |
| 80 | 233016 | _pos += len; |
| 81 | 233016 | } |
| 82 | |
|
| 83 | |
|
| 84 | |
|
| 85 | |
|
| 86 | |
public void write (byte b) |
| 87 | |
{ |
| 88 | 0 | ensureCapacity(1); |
| 89 | 0 | _buf[_pos] = b; |
| 90 | 0 | _pos++; |
| 91 | 0 | } |
| 92 | |
|
| 93 | |
|
| 94 | |
|
| 95 | |
|
| 96 | |
public final void ensureCapacity (int len) |
| 97 | |
{ |
| 98 | 233016 | if (_buf.length < _pos + len) |
| 99 | |
{ |
| 100 | 456 | int blen = _buf.length; |
| 101 | |
|
| 102 | 912 | while (blen < _pos + len) |
| 103 | |
{ |
| 104 | 456 | blen *= 2; |
| 105 | |
} |
| 106 | |
|
| 107 | 456 | byte[] tmp = new byte[blen]; |
| 108 | 456 | System.arraycopy(_buf, 0, tmp, 0, _pos); |
| 109 | 456 | _buf = tmp; |
| 110 | |
} |
| 111 | 233016 | } |
| 112 | |
|
| 113 | |
|
| 114 | |
|
| 115 | |
|
| 116 | |
public int size () |
| 117 | |
{ |
| 118 | 0 | return _pos; |
| 119 | |
} |
| 120 | |
|
| 121 | |
|
| 122 | |
|
| 123 | |
|
| 124 | |
|
| 125 | |
|
| 126 | |
|
| 127 | |
|
| 128 | |
public byte[] getBuffer () |
| 129 | |
{ |
| 130 | 0 | return _buf; |
| 131 | |
} |
| 132 | |
|
| 133 | |
|
| 134 | |
|
| 135 | |
|
| 136 | |
|
| 137 | |
|
| 138 | |
public byte[] getBytes () |
| 139 | |
{ |
| 140 | 0 | byte[] ret = new byte[_pos]; |
| 141 | 0 | System.arraycopy(_buf, 0, ret, 0, _pos); |
| 142 | 0 | return ret; |
| 143 | |
} |
| 144 | |
|
| 145 | |
|
| 146 | |
|
| 147 | |
|
| 148 | |
public String toString () |
| 149 | |
{ |
| 150 | 0 | return new String(_buf, 0, _pos); |
| 151 | |
} |
| 152 | |
|
| 153 | |
|
| 154 | |
|
| 155 | |
|
| 156 | |
public String toString (String encoding) throws UnsupportedEncodingException |
| 157 | |
{ |
| 158 | 642 | return new String(_buf, 0, _pos, encoding); |
| 159 | |
} |
| 160 | |
|
| 161 | |
|
| 162 | |
|
| 163 | |
|
| 164 | |
public void writeTo (OutputStream out) throws IOException |
| 165 | |
{ |
| 166 | 1150 | out.write(_buf, 0, _pos); |
| 167 | 1136 | } |
| 168 | |
|
| 169 | |
public static void main (String arg[]) |
| 170 | |
{ |
| 171 | |
try |
| 172 | |
{ |
| 173 | |
|
| 174 | 0 | ByteBufferOutputStream bb = new ByteBufferOutputStream(5); |
| 175 | |
|
| 176 | 0 | bb.write((byte) 'T'); |
| 177 | 0 | bb.write((byte) 'h'); |
| 178 | 0 | bb.write((byte) 'i'); |
| 179 | 0 | bb.write((byte) 's'); |
| 180 | 0 | bb.write((byte) ' '); |
| 181 | 0 | bb.write((byte) 'i'); |
| 182 | 0 | bb.write((byte) 's'); |
| 183 | 0 | bb.write((byte) ' '); |
| 184 | 0 | bb.write((byte) 'a'); |
| 185 | 0 | bb.write((byte) ' '); |
| 186 | 0 | bb.write((byte) 't'); |
| 187 | 0 | bb.write((byte) 'e'); |
| 188 | 0 | bb.write((byte) 's'); |
| 189 | 0 | bb.write((byte) 't'); |
| 190 | 0 | bb.write((byte) '\n'); |
| 191 | 0 | bb.write("This is the second line of the byte buffer".getBytes()); |
| 192 | 0 | bb.write((byte) '\n'); |
| 193 | 0 | bb.write("This is the third line\n".getBytes()); |
| 194 | 0 | bb.write("This is the fourth line\n".getBytes()); |
| 195 | 0 | bb.write((byte) 'E'); |
| 196 | 0 | bb.write((byte) 'N'); |
| 197 | 0 | bb.write((byte) 'D'); |
| 198 | 0 | bb.write((byte) '.'); |
| 199 | 0 | bb.write((byte) '\n'); |
| 200 | |
|
| 201 | 0 | System.out.println("Byte buffer as a string: [" + bb + "]"); |
| 202 | 0 | System.out.print("Byte buffer written to a stream: ["); |
| 203 | 0 | bb.writeTo(System.out); |
| 204 | 0 | System.out.print("]"); |
| 205 | 0 | System.out.println("DONE"); |
| 206 | |
} |
| 207 | 0 | catch (Exception e) |
| 208 | |
{ |
| 209 | 0 | e.printStackTrace(); |
| 210 | 0 | } |
| 211 | 0 | } |
| 212 | |
} |
| 213 | |
|