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1
51
52 package org.ozoneDB.xml.util;
53
54 import java.io.InputStream  ;
55 import java.io.IOException ;
56 import java.io.EOFException ;
57 import java.io.UTFDataFormatException ;
58 import java.io.Serializable ;
59
60 import java.util.ArrayList ;
61
62
66
67
68 final class CompiledXMLInputStream extends InputStream implements Serializable {
69
70 private final InputStream in;
71 private final ArrayList list = new ArrayList ();
72
73
74 public CompiledXMLInputStream( InputStream input ) throws IOException {
75 this.in = input;
76 }
77
78
79 public final int readEvent() throws IOException {
80 return this.in.read();
81 }
82
83
84 public final int readAttributes() throws IOException {
85 InputStream in = this.in;
86 int ch1 = in.read();
87 int ch2 = in.read();
88 return (ch1 << 8) + (ch2 << 0);
89 }
90
91
92 public final String readString() throws IOException {
93 int length = this.readLength();
94 int index = length & 0x00007FFF;
95 if (length >= 0x00008000) {
96 return (String )list.get( index );
97 } else {
98 String str = new String ( this.readChars( index ) );
99 list.add( str );
100 return str;
102 }
103 }
104
105
106 public final char[] readChars() throws IOException {
107 return readChars( this.readLength() );
108 }
109
110
111 public final int read() throws IOException {
112 return this.in.read();
113 }
114
115
116 private char[] readChars( int len ) throws IOException {
117 char[] str = new char[len];
118 byte[] bytearr = new byte[len];
119 int c;
120 int char2;
121 int char3;
122 int count = 0;
123 int i = 0;
124
125 this.readBytes( bytearr );
126
127 while (count < len) {
128 c = (int)bytearr[count] & 0xff;
129 switch (c >> 4) {
130 case 0:
131 case 1:
132 case 2:
133 case 3:
134 case 4:
135 case 5:
136 case 6:
137 case 7:
138
139 count++;
140 str[i++] = (char)c;
141 break;
142 case 12:
143 case 13:
144
145 count += 2;
146 char2 = (int)bytearr[count - 1];
147 str[i++] = (char)((c & 0x1F) << 6 | char2 & 0x3F);
148 break;
149 case 14:
150
151 count += 3;
152 char2 = (int)bytearr[count - 2];
153 char3 = (int)bytearr[count - 1];
154 str[i++] = (char)((c & 0x0F) << 12 | (char2 & 0x3F) << 6 | (char3 & 0x3F) << 0);
155 break;
156 default:
157
158 throw new UTFDataFormatException ();
159 }
160 }
161
162 if (i < len) {
163 char[] newstr = new char[i];
164 System.arraycopy(str, 0, newstr, 0, i );
165 return newstr;
166 }
167
168 return str;
169 }
170
171
172 private void readBytes( byte[] b ) throws IOException {
173 InputStream in = this.in;
174 int n = 0;
175 int len = b.length;
176 while (n < len) {
177 int count = in.read( b, n, len - n );
178 if (count < 0) {
179 throw new EOFException ();
180 }
181 n += count;
182 }
183 }
184
185
186 private int readLength() throws IOException {
187 InputStream in = this.in;
188 int ch1 = in.read();
189 int ch2 = in.read();
190 return (ch1 << 8) + (ch2 << 0);
191 }
192 }
193 |
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