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1
31 package org.jruby.util;
32
33 import java.text.DateFormat  ;
34 import java.text.DateFormatSymbols ;
35 import java.text.FieldPosition ;
36 import java.text.ParsePosition ;
37 import java.util.Calendar ;
38 import java.util.Date ;
39 import java.util.Iterator ;
40 import java.util.LinkedList ;
41 import java.util.List ;
42 import java.util.Locale ;
43 import java.util.TimeZone ;
44
45 public class RubyDateFormat extends DateFormat {
46 private static final long serialVersionUID = -250429218019023997L;
47
48 private List compiledPattern;
49
50 private DateFormatSymbols formatSymbols;
51
52 private static final int FORMAT_STRING = 0;
53 private static final int FORMAT_WEEK_LONG = 1;
54 private static final int FORMAT_WEEK_SHORT = 2;
55 private static final int FORMAT_MONTH_LONG = 3;
56 private static final int FORMAT_MONTH_SHORT = 4;
57 private static final int FORMAT_DAY = 5;
58 private static final int FORMAT_HOUR = 6;
59 private static final int FORMAT_HOUR_M = 7;
60 private static final int FORMAT_DAY_YEAR = 8;
61 private static final int FORMAT_MINUTES = 9;
62 private static final int FORMAT_MONTH = 10;
63 private static final int FORMAT_MERIDIAN = 11;
64 private static final int FORMAT_SECONDS = 12;
65 private static final int FORMAT_WEEK_YEAR_S = 13;
66 private static final int FORMAT_WEEK_YEAR_M = 14;
67 private static final int FORMAT_DAY_WEEK = 15;
68 private static final int FORMAT_YEAR_LONG = 16;
69 private static final int FORMAT_YEAR_SHORT = 17;
70 private static final int FORMAT_ZONE_OFF = 18;
71 private static final int FORMAT_ZONE_ID = 19;
72
73 private static class Token {
74 private int format;
75 private Object data;
76
77 public Token(int format) {
78 this(format, null);
79 }
80
81 public Token(int format, Object data) {
82 this.format = format;
83 this.data = data;
84 }
85
86
90 public Object getData() {
91 return data;
92 }
93
94
98 public int getFormat() {
99 return format;
100 }
101 }
102
103
106 public RubyDateFormat() {
107 this("", new DateFormatSymbols ());
108 }
109
110 public RubyDateFormat(String pattern, Locale aLocale) {
111 this(pattern, new DateFormatSymbols (aLocale));
112 }
113
114 public RubyDateFormat(String pattern, DateFormatSymbols formatSymbols) {
115 super();
116
117 this.formatSymbols = formatSymbols;
118 applyPattern(pattern);
119 }
120
121 public void applyPattern(String pattern) {
122 compilePattern(pattern);
123 }
124
125 private void compilePattern(String pattern) {
126 compiledPattern = new LinkedList ();
127
128 int len = pattern.length();
129 for (int i = 0; i < len;) {
130 if (pattern.charAt(i) == '%') {
131 i++;
132 switch (pattern.charAt(i)) {
133 case 'A' :
134 compiledPattern.add(new Token(FORMAT_WEEK_LONG));
135 break;
136 case 'a' :
137 compiledPattern.add(new Token(FORMAT_WEEK_SHORT));
138 break;
139 case 'B' :
140 compiledPattern.add(new Token(FORMAT_MONTH_LONG));
141 break;
142 case 'b' :
143 compiledPattern.add(new Token(FORMAT_MONTH_SHORT));
144 break;
145 case 'c' :
146 compiledPattern.add(new Token(FORMAT_WEEK_SHORT));
147 compiledPattern.add(new Token(FORMAT_STRING, " "));
148 compiledPattern.add(new Token(FORMAT_MONTH_SHORT));
149 compiledPattern.add(new Token(FORMAT_STRING, " "));
150 compiledPattern.add(new Token(FORMAT_DAY));
151 compiledPattern.add(new Token(FORMAT_STRING, " "));
152 compiledPattern.add(new Token(FORMAT_HOUR));
153 compiledPattern.add(new Token(FORMAT_STRING, ":"));
154 compiledPattern.add(new Token(FORMAT_MINUTES));
155 compiledPattern.add(new Token(FORMAT_STRING, ":"));
156 compiledPattern.add(new Token(FORMAT_SECONDS));
157 compiledPattern.add(new Token(FORMAT_STRING, " "));
158 compiledPattern.add(new Token(FORMAT_YEAR_LONG));
159 break;
160 case 'd':
161 compiledPattern.add(new Token(FORMAT_DAY));
162 break;
163 case 'H':
164 compiledPattern.add(new Token(FORMAT_HOUR));
165 break;
166 case 'I':
167 compiledPattern.add(new Token(FORMAT_HOUR_M));
168 break;
169 case 'j':
170 compiledPattern.add(new Token(FORMAT_DAY_YEAR));
171 break;
172 case 'M':
173 compiledPattern.add(new Token(FORMAT_MINUTES));
174 break;
175 case 'm':
176 compiledPattern.add(new Token(FORMAT_MONTH));
177 break;
178 case 'p':
179 compiledPattern.add(new Token(FORMAT_MERIDIAN));
180 break;
181 case 'S':
182 compiledPattern.add(new Token(FORMAT_SECONDS));
183 break;
184 case 'U':
185 compiledPattern.add(new Token(FORMAT_WEEK_YEAR_S));
186 break;
187 case 'W':
188 compiledPattern.add(new Token(FORMAT_WEEK_YEAR_M));
189 break;
190 case 'w':
191 compiledPattern.add(new Token(FORMAT_DAY_WEEK));
192 break;
193 case 'X':
194 compiledPattern.add(new Token(FORMAT_HOUR));
195 compiledPattern.add(new Token(FORMAT_STRING, ":"));
196 compiledPattern.add(new Token(FORMAT_MINUTES));
197 compiledPattern.add(new Token(FORMAT_STRING, ":"));
198 compiledPattern.add(new Token(FORMAT_SECONDS));
199 break;
200 case 'x':
201 compiledPattern.add(new Token(FORMAT_MONTH));
202 compiledPattern.add(new Token(FORMAT_STRING, "/"));
203 compiledPattern.add(new Token(FORMAT_DAY));
204 compiledPattern.add(new Token(FORMAT_STRING, "/"));
205 compiledPattern.add(new Token(FORMAT_YEAR_SHORT));
206 break;
207 case 'Y':
208 compiledPattern.add(new Token(FORMAT_YEAR_LONG));
209 break;
210 case 'y':
211 compiledPattern.add(new Token(FORMAT_YEAR_SHORT));
212 break;
213 case 'Z':
214 compiledPattern.add(new Token(FORMAT_ZONE_ID));
215 break;
216 case 'z':
217 compiledPattern.add(new Token(FORMAT_ZONE_OFF));
218 break;
219 case '%':
220 compiledPattern.add(new Token(FORMAT_STRING, "%"));
221 break;
222 default:
223 compiledPattern.add(new Token(FORMAT_STRING, "%" + pattern.charAt(i)));
224 }
225 i++;
226 } else {
227 StringBuffer sb = new StringBuffer ();
228 for (;i < len && pattern.charAt(i) != '%'; i++) {
229 sb.append(pattern.charAt(i));
230 }
231 compiledPattern.add(new Token(FORMAT_STRING, sb.toString()));
232 }
233 }
234 }
235
236
239 public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) {
240 calendar.setTime(date);
241 calendar.setMinimalDaysInFirstWeek(1);
242
243 Iterator iter = compiledPattern.iterator();
244 while (iter.hasNext()) {
245 Token token = (Token) iter.next();
246
247 switch (token.getFormat()) {
248 case FORMAT_STRING:
249 toAppendTo.append(token.getData());
250 break;
251 case FORMAT_WEEK_LONG:
252 toAppendTo.append(formatSymbols.getWeekdays()[calendar.get(Calendar.DAY_OF_WEEK)]);
253 break;
254 case FORMAT_WEEK_SHORT:
255 toAppendTo.append(formatSymbols.getShortWeekdays()[calendar.get(Calendar.DAY_OF_WEEK)]);
256 break;
257 case FORMAT_MONTH_LONG:
258 toAppendTo.append(formatSymbols.getMonths()[calendar.get(Calendar.MONTH)]);
259 break;
260 case FORMAT_MONTH_SHORT:
261 toAppendTo.append(formatSymbols.getShortMonths()[calendar.get(Calendar.MONTH)]);
262 break;
263 case FORMAT_DAY:
264 int value = calendar.get(Calendar.DAY_OF_MONTH);
265 if (value < 10) {
266 toAppendTo.append('0');
267 }
268 toAppendTo.append(value);
269 break;
270 case FORMAT_HOUR:
271 value = calendar.get(Calendar.HOUR_OF_DAY);
272 if (value < 10) {
273 toAppendTo.append('0');
274 }
275 toAppendTo.append(value);
276 break;
277 case FORMAT_HOUR_M:
278 value = calendar.get(Calendar.HOUR);
279 if (value < 10) {
280 toAppendTo.append('0');
281 }
282 toAppendTo.append(value);
283 break;
284 case FORMAT_DAY_YEAR:
285 value = calendar.get(Calendar.DAY_OF_YEAR);
286 if (value < 10) {
287 toAppendTo.append("00");
288 } else if (value < 100) {
289 toAppendTo.append('0');
290 }
291 toAppendTo.append(value);
292 break;
293 case FORMAT_MINUTES:
294 value = calendar.get(Calendar.MINUTE);
295 if (value < 10) {
296 toAppendTo.append('0');
297 }
298 toAppendTo.append(value);
299 break;
300 case FORMAT_MONTH:
301 value = calendar.get(Calendar.MONTH) + 1;
302 if (value < 10) {
303 toAppendTo.append('0');
304 }
305 toAppendTo.append(value);
306 break;
307 case FORMAT_MERIDIAN:
308 if (calendar.get(Calendar.AM_PM) == Calendar.AM) {
309 toAppendTo.append("AM");
310 } else {
311 toAppendTo.append("PM");
312 }
313 break;
314 case FORMAT_SECONDS:
315 value = calendar.get(Calendar.SECOND);
316 if (value < 10) {
317 toAppendTo.append('0');
318 }
319 toAppendTo.append(value);
320 break;
321 case FORMAT_WEEK_YEAR_M:
322 formatWeekYear(Calendar.MONDAY, toAppendTo);
323 break;
324 case FORMAT_WEEK_YEAR_S:
326 formatWeekYear(Calendar.SUNDAY, toAppendTo);
327 break;
328 case FORMAT_DAY_WEEK:
329 value = calendar.get(Calendar.DAY_OF_WEEK) - 1;
330 toAppendTo.append(value);
331 break;
332 case FORMAT_YEAR_LONG:
333 value = calendar.get(Calendar.YEAR);
334 if (value < 10) {
335 toAppendTo.append("000");
336 } else if (value < 100) {
337 toAppendTo.append("00");
338 } else if (value < 1000) {
339 toAppendTo.append('0');
340 }
341 toAppendTo.append(value);
342 break;
343 case FORMAT_YEAR_SHORT:
344 value = calendar.get(Calendar.YEAR) % 100;
345 if (value < 10) {
346 toAppendTo.append('0');
347 }
348 toAppendTo.append(value);
349 break;
350 case FORMAT_ZONE_OFF:
351 value = calendar.getTimeZone().getOffset(calendar.getTimeInMillis());
352 if (value <= 0) {
353 toAppendTo.append('+');
354 } else {
355 toAppendTo.append('-');
356 }
357 value = Math.abs(value);
358 if (value / 3600000 < 10) {
359 toAppendTo.append('0');
360 }
361 toAppendTo.append(value / 3600000);
362 value = value % 3600000 / 60000;
363 if (value < 10) {
364 toAppendTo.append('0');
365 }
366 toAppendTo.append(value);
367 break;
368 case FORMAT_ZONE_ID:
369 toAppendTo.append(calendar.getTimeZone().getDisplayName(calendar.get(Calendar.DST_OFFSET) != 0, TimeZone.SHORT));
370 break;
371 }
372 }
373
374 return toAppendTo;
375 }
376
377 private void formatWeekYear(int firstDayOfWeek, StringBuffer toAppendTo) {
378 calendar.setFirstDayOfWeek(firstDayOfWeek);
379 int value = calendar.get(Calendar.WEEK_OF_YEAR);
380 if (calendar.get(Calendar.DAY_OF_WEEK) != firstDayOfWeek) {
381 value--;
382 }
383 if (value < 10) {
384 toAppendTo.append('0');
385 }
386 toAppendTo.append(value);
387 calendar.setFirstDayOfWeek(Calendar.SUNDAY);
388 }
389
390
393 public Date parse(String source, ParsePosition pos) {
394 throw new UnsupportedOperationException ();
395 }
396 }
397 |
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