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1 package com.thoughtworks.xstream.core.util;
2
3 import com.thoughtworks.xstream.io.StreamException;
4
5 import java.io.IOException  ;
6 import java.io.Writer ;
7
8 public class QuickWriter {
9
10 private final Writer writer;
11 private char[] buffer;
12 private int pointer;
13
14 public QuickWriter(Writer writer) {
15 this.writer = writer;
16 buffer = new char[32];
17 }
18
19 public QuickWriter(Writer writer, int bufferSize) {
20 this.writer = writer;
21 buffer = new char[bufferSize];
22 }
23
24 public void write(String str) {
25 int len = str.length();
26 if (pointer + len >= buffer.length) {
27 flush();
28 if (len > buffer.length) {
29 raw(str.toCharArray());
30 return;
31 }
32 }
33 str.getChars(0, len, buffer, pointer);
34 pointer += len;
35 }
36
37 public void write(char c) {
38 if (pointer + 1 >= buffer.length) {
39 flush();
40 }
41 buffer[pointer++] = c;
42 }
43
44 public void write(char[] c) {
45 int len = c.length;
46 if (pointer + len >= buffer.length) {
47 flush();
48 if (len > buffer.length) {
49 raw(c);
50 return;
51 }
52 }
53 System.arraycopy(c, 0, buffer, pointer, len);
54 pointer += len;
55 }
56
57 public void flush() {
58 try {
59 writer.write(buffer, 0, pointer);
60 pointer = 0;
61 writer.flush();
62 } catch (IOException e) {
63 throw new StreamException(e);
64 }
65 }
66
67 private void raw(char[] c) {
68 try {
69 writer.write(c);
70 writer.flush();
71 } catch (IOException e) {
72 throw new StreamException(e);
73 }
74 }
75 }
76 |
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