|
1
21 package com.db4o;
22
23
26 public class YapStringIO {
27
28 protected char[] chars = new char[0];
29
30 public int bytesPerChar(){
31 return 1;
32 }
33
34 public byte encodingByte(){
35 return YapConst.ISO8859;
36 }
37
38 static YapStringIO forEncoding(byte encodingByte){
39 switch (encodingByte) {
40 case YapConst.ISO8859:
41 return new YapStringIO();
42 default:
43 return new YapStringIOUnicode();
44 }
45 }
46
47
48
50
62 public int length(String  a_string){
63 return a_string.length() + YapConst.OBJECT_LENGTH + YapConst.INT_LENGTH;
64 }
65
66 protected void checkBufferLength(int a_length){
67 if(a_length > chars.length){
68 chars = new char[a_length];
69 }
70 }
71
72 public String read(YapReader bytes, int a_length){
73 checkBufferLength(a_length);
74 for(int ii = 0; ii < a_length; ii++){
75 chars[ii] = (char)(bytes._buffer[bytes._offset ++]& 0xff);
76 }
77 return new String (chars,0,a_length);
78 }
79
80 public String read(byte[] a_bytes){
81 checkBufferLength(a_bytes.length);
82 for(int i = 0; i < a_bytes.length; i++){
83 chars[i] = (char)(a_bytes[i]& 0xff);
84 }
85 return new String (chars,0,a_bytes.length);
86 }
87
88 public int shortLength(String a_string){
89 return a_string.length() + YapConst.INT_LENGTH;
90 }
91
92 protected int writetoBuffer(String str){
93 final int len = str.length();
94 checkBufferLength(len);
95 str.getChars(0, len, chars, 0);
96 return len;
97 }
98
99
100 public void write(YapReader bytes, String string){
101 final int len = writetoBuffer(string);
102 for (int i = 0; i < len; i ++){
103 bytes._buffer[bytes._offset++] = (byte) (chars[i] & 0xff);
104 }
105 }
106
107 byte[] write(String string){
108 final int len = writetoBuffer(string);
109 byte[] bytes = new byte[len];
110 for (int i = 0; i < len; i ++){
111 bytes[i] = (byte) (chars[i] & 0xff);
112 }
113 return bytes;
114 }
115
116 }
117
|
Popular Tags
|
Java API By Example, From Geeks To Geeks.