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1
48
49
50 package com.caucho.portal.generic;
51
52 import java.io.IOException  ;
53 import java.io.PipedWriter ;
54 import java.io.PrintWriter ;
55 import java.io.Writer ;
56 import java.util.logging.Logger ;
57
58
59
63 public class FastPrintWriter
64 extends PrintWriter
65 {
66 static final public Logger log =
67 Logger.getLogger(FastPrintWriter.class.getName());
68
69 final static Writer _dummy = new PipedWriter ();
70 private final static char []_newline = "\n".toCharArray();
71
72 protected Writer _out;
73 private boolean _error;
74 private Exception _errorCause;
75
76 public FastPrintWriter()
77 {
78 super(_dummy);
79 }
80
81 public FastPrintWriter(Writer out)
82 throws IOException
83 {
84 super(_dummy);
85 open(out);
86 }
87
88
89 public void open(Writer out)
90 throws IOException
91 {
92 if (_out != null)
93 throw new IOException ("already open");
94
95 if (out == null)
96 throw new NullPointerException ();
97
98 _out = out;
99
100 }
101
102 protected void setError()
103 {
104 if (_error == false) {
105 _error = true;
106 _errorCause = new IOException ("stream failed (no exception)");
107 }
108 }
109
110 protected void setError(Exception errorCause)
111 {
112 if (_error == false) {
113 _error = true;
114 _errorCause = errorCause;
115 }
116 }
117
118 public boolean checkError()
119 {
120 return _error;
121 }
122
123 public Exception getErrorCause()
124 {
125 return _errorCause;
126 }
127
128 public void clearError()
129 {
130 _error = false;
131 _errorCause = null;
132 }
133
134 public void flush()
135 {
136 if (checkError())
137 return;
138
139 try {
140 _out.flush();
141 }
142 catch (Exception ex) {
143 setError(ex);
144 }
145 }
146
147 public void writeOut(char buf[], int off, int len)
148 throws IOException
149 {
150 _out.write(buf, off, len);
151 }
152
153 public void writeOut(String str, int off, int len)
154 throws IOException
155 {
156 _out.write(str, off, len);
157 }
158
159 public void writeOut(char c)
160 throws IOException
161 {
162 _out.write((int) c);
163 }
164
165 public void close()
166 {
167 Writer out = _out;
168 boolean error = _error;
169
170 flush();
171
172 _out = null;
173 _error = false;
174 _errorCause = null;
175
176 if (!_error) {
177 try {
178 out.close();
179 }
180 catch (IOException ex) {
181 setError(ex);
182 }
183 }
184 }
185
186 public void write(char buf[], int off, int len)
187 {
188 if (checkError())
189 return;
190
191 try {
192 writeOut(buf, off, len);
193 }
194 catch (Exception ex) {
195 setError(ex);
196 }
197 }
198
199 public void write(String str, int off, int len)
200 {
201 if (checkError())
202 return;
203
204 try {
205 writeOut(str, off, len);
206 }
207 catch (Exception ex) {
208 setError(ex);
209 }
210 }
211
212 public void write(int c)
213 {
214 if (checkError())
215 return;
216
217 try {
218 writeOut((char) c);
219 }
220 catch (Exception ex) {
221 setError(ex);
222 }
223 }
224
225 public void write(char cbuf[])
226 {
227 write(cbuf, 0, cbuf.length);
228 }
229
230 public void write(String str)
231 {
232 write(str, 0, str.length());
233 }
234
235 public void print(boolean b)
236 {
237 write(b ? "true" : "false");
238 }
239
240 public void print(char c)
241 {
242 write(c);
243 }
244
245 public void print(int i)
246 {
247 write(String.valueOf(i));
248 }
249
250 public void print(long l)
251 {
252 write(String.valueOf(l));
253 }
254
255 public void print(float f)
256 {
257 write(String.valueOf(f));
258 }
259
260 public void print(double d)
261 {
262 write(String.valueOf(d));
263 }
264
265 public void print(char s[])
266 {
267 write(s);
268 }
269
270 public void print(String s)
271 {
272 write(s == null ? "null" : s);
273 }
274
275 public void print(Object obj)
276 {
277 write(String.valueOf(obj));
278 }
279
280 public void println()
281 {
282 write(_newline, 0, _newline.length);
283 }
284
285
286 public void println(boolean b)
287 {
288 print(b);
289 println();
290 }
291
292 public void println(char c)
293 {
294 print(c);
295 println();
296 }
297
298 public void println(int i)
299 {
300 print(i);
301 println();
302 }
303
304 public void println(long l)
305 {
306 print(l);
307 println();
308 }
309
310 public void println(float f)
311 {
312 print(f);
313 println();
314 }
315
316 public void println(double d)
317 {
318 print(d);
319 println();
320 }
321
322 public void println(char c[])
323 {
324 print(c);
325 println();
326 }
327
328 public void println(String s)
329 {
330 print(s);
331 println();
332 }
333
334 public void println(Object o)
335 {
336 print(o);
337 println();
338 }
339 }
340 |
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