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6151d86c | 1 | /***************************************************************************** |
c8422608 | 2 | * Copyright (c) 2007, 2013 Intel Corporation, Ericsson |
6151d86c PT |
3 | * All rights reserved. This program and the accompanying materials |
4 | * are made available under the terms of the Eclipse Public License v1.0 | |
5 | * which accompanies this distribution, and is available at | |
6 | * http://www.eclipse.org/legal/epl-v10.html | |
7 | * | |
8 | * Contributors: | |
9 | * Intel Corporation - Initial API and implementation | |
10 | * Ruslan A. Scherbakov, Intel - Initial API and implementation | |
11 | * Alvaro Sanchez-Leon - Udpated for TMF | |
12 | * Patrick Tasse - Refactoring | |
6151d86c PT |
13 | *****************************************************************************/ |
14 | ||
15 | package org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets; | |
16 | ||
026664b7 | 17 | import java.text.NumberFormat; |
6151d86c PT |
18 | import java.text.SimpleDateFormat; |
19 | import java.util.Date; | |
20 | import java.util.Iterator; | |
21 | ||
22 | import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeEvent; | |
23 | import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeGraphEntry; | |
24 | import org.eclipse.swt.graphics.Color; | |
25 | import org.eclipse.swt.graphics.Device; | |
26 | import org.eclipse.swt.graphics.GC; | |
27 | import org.eclipse.swt.graphics.Point; | |
28 | import org.eclipse.swt.graphics.Rectangle; | |
29 | import org.eclipse.swt.widgets.Display; | |
30 | ||
31 | /** | |
32 | * General utilities and definitions used by the time graph widget | |
33 | * | |
34 | * @version 1.0 | |
35 | * @author Alvaro Sanchez-Leon | |
36 | * @author Patrick Tasse | |
37 | */ | |
38 | public class Utils { | |
39 | ||
f1fae91f PT |
40 | private Utils() { |
41 | } | |
42 | ||
6151d86c PT |
43 | /** Time format for dates and timestamp */ |
44 | public enum TimeFormat { | |
45 | /** Relative to the start of the trace */ | |
46 | RELATIVE, | |
386cf45c AM |
47 | |
48 | /** | |
49 | * Absolute timestamp (ie, relative to the Unix epoch) | |
50 | * @since 2.0 | |
51 | */ | |
026664b7 | 52 | CALENDAR, |
386cf45c AM |
53 | |
54 | /** | |
55 | * Timestamp displayed as a simple number | |
56 | * @since 2.0 | |
57 | */ | |
026664b7 | 58 | NUMBER, |
6151d86c PT |
59 | } |
60 | ||
a0a88f65 AM |
61 | /** |
62 | * Timestamp resolution | |
63 | */ | |
64 | public static enum Resolution { | |
65 | /** seconds */ | |
66 | SECONDS, | |
6151d86c | 67 | |
a0a88f65 AM |
68 | /** milliseconds */ |
69 | MILLISEC, | |
6151d86c | 70 | |
a0a88f65 AM |
71 | /** microseconds */ |
72 | MICROSEC, | |
73 | ||
74 | /** nanoseconds */ | |
75 | NANOSEC | |
6151d86c PT |
76 | } |
77 | ||
f1fae91f PT |
78 | private static final SimpleDateFormat TIME_FORMAT = new SimpleDateFormat("HH:mm:ss"); //$NON-NLS-1$ |
79 | private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd"); //$NON-NLS-1$ | |
80 | private static final long SEC_IN_NS = 1000000000; | |
81 | private static final long MILLISEC_IN_NS = 1000000; | |
6151d86c PT |
82 | |
83 | static Rectangle clone(Rectangle source) { | |
84 | return new Rectangle(source.x, source.y, source.width, source.height); | |
85 | } | |
86 | ||
87 | /** | |
88 | * Initialize a Rectangle object to default values (all equal to 0) | |
89 | * | |
90 | * @param rect | |
91 | * The Rectangle to initialize | |
92 | */ | |
f1fae91f | 93 | public static void init(Rectangle rect) { |
6151d86c PT |
94 | rect.x = 0; |
95 | rect.y = 0; | |
96 | rect.width = 0; | |
97 | rect.height = 0; | |
98 | } | |
99 | ||
100 | /** | |
101 | * Initialize a Rectangle object with all the given values | |
102 | * | |
103 | * @param rect | |
104 | * The Rectangle object to initialize | |
105 | * @param x | |
106 | * The X coordinate | |
107 | * @param y | |
108 | * The Y coordinate | |
109 | * @param width | |
110 | * The width of the rectangle | |
111 | * @param height | |
112 | * The height of the rectangle | |
113 | */ | |
f1fae91f | 114 | public static void init(Rectangle rect, int x, int y, int width, int height) { |
6151d86c PT |
115 | rect.x = x; |
116 | rect.y = y; | |
117 | rect.width = width; | |
118 | rect.height = height; | |
119 | } | |
120 | ||
121 | /** | |
122 | * Initialize a Rectangle object to another existing Rectangle's values. | |
123 | * | |
124 | * @param rect | |
125 | * The Rectangle to initialize | |
126 | * @param source | |
127 | * The reference Rectangle to copy | |
128 | */ | |
f1fae91f | 129 | public static void init(Rectangle rect, Rectangle source) { |
6151d86c PT |
130 | rect.x = source.x; |
131 | rect.y = source.y; | |
132 | rect.width = source.width; | |
133 | rect.height = source.height; | |
134 | } | |
135 | ||
136 | /** | |
137 | * Reduce the size of a given rectangle by the given amounts. | |
138 | * | |
139 | * @param rect | |
140 | * The rectangle to modify | |
141 | * @param x | |
142 | * The reduction in width | |
143 | * @param y | |
144 | * The reduction in height | |
145 | */ | |
f1fae91f | 146 | public static void deflate(Rectangle rect, int x, int y) { |
6151d86c PT |
147 | rect.x += x; |
148 | rect.y += y; | |
149 | rect.width -= x + x; | |
150 | rect.height -= y + y; | |
151 | } | |
152 | ||
153 | /** | |
154 | * Increase the size of a given rectangle by the given amounts. | |
155 | * | |
156 | * @param rect | |
157 | * The rectangle to modify | |
158 | * @param x | |
159 | * The augmentation in width | |
160 | * @param y | |
161 | * The augmentation in height | |
162 | */ | |
f1fae91f | 163 | public static void inflate(Rectangle rect, int x, int y) { |
6151d86c PT |
164 | rect.x -= x; |
165 | rect.y -= y; | |
166 | rect.width += x + x; | |
167 | rect.height += y + y; | |
168 | } | |
169 | ||
170 | static void dispose(Color col) { | |
171 | if (null != col) { | |
172 | col.dispose(); | |
173 | } | |
174 | } | |
175 | ||
176 | /** | |
177 | * Get the resulting color from a mix of two existing ones for a given | |
178 | * display. | |
179 | * | |
180 | * @param display | |
181 | * The display device (which might affect the color conversion) | |
182 | * @param c1 | |
183 | * The first color | |
184 | * @param c2 | |
185 | * The second color | |
186 | * @param w1 | |
187 | * The gamma level for color 1 | |
188 | * @param w2 | |
189 | * The gamma level for color 2 | |
190 | * @return The resulting color | |
191 | */ | |
f1fae91f | 192 | public static Color mixColors(Device display, Color c1, Color c2, int w1, |
6151d86c PT |
193 | int w2) { |
194 | return new Color(display, (w1 * c1.getRed() + w2 * c2.getRed()) | |
195 | / (w1 + w2), (w1 * c1.getGreen() + w2 * c2.getGreen()) | |
196 | / (w1 + w2), (w1 * c1.getBlue() + w2 * c2.getBlue()) | |
197 | / (w1 + w2)); | |
198 | } | |
199 | ||
200 | /** | |
201 | * Get the system color with the given ID. | |
202 | * | |
203 | * @param id | |
204 | * The color ID | |
205 | * @return The resulting color | |
206 | */ | |
f1fae91f | 207 | public static Color getSysColor(int id) { |
6151d86c PT |
208 | Color col = Display.getCurrent().getSystemColor(id); |
209 | return new Color(col.getDevice(), col.getRGB()); | |
210 | } | |
211 | ||
212 | /** | |
213 | * Get the resulting color from a mix of two existing ones for the current | |
214 | * display. | |
215 | * | |
216 | * @param col1 | |
217 | * The first color | |
218 | * @param col2 | |
219 | * The second color | |
220 | * @param w1 | |
221 | * The gamma level for color 1 | |
222 | * @param w2 | |
223 | * The gamma level for color 2 | |
224 | * @return The resulting color | |
225 | */ | |
f1fae91f | 226 | public static Color mixColors(Color col1, Color col2, int w1, int w2) { |
6151d86c PT |
227 | return mixColors(Display.getCurrent(), col1, col2, w1, w2); |
228 | } | |
229 | ||
230 | /** | |
231 | * Draw text in a rectangle. | |
232 | * | |
233 | * @param gc | |
234 | * The SWT GC object | |
235 | * @param text | |
236 | * The text to draw | |
237 | * @param rect | |
238 | * The rectangle object which is being drawn | |
239 | * @param transp | |
240 | * Should we transpose the color | |
241 | * @return The X coordinate where we have written | |
242 | */ | |
f1fae91f | 243 | public static int drawText(GC gc, String text, Rectangle rect, boolean transp) { |
6151d86c PT |
244 | Point size = gc.stringExtent(text); |
245 | gc.drawText(text, rect.x, rect.y, transp); | |
246 | return size.x; | |
247 | } | |
248 | ||
249 | /** | |
250 | * Draw text at a given location. | |
251 | * | |
252 | * @param gc | |
253 | * The SWT GC object | |
254 | * @param text | |
255 | * The text to draw | |
256 | * @param x | |
257 | * The X coordinate of the starting point | |
258 | * @param y | |
259 | * the Y coordinate of the starting point | |
260 | * @param transp | |
261 | * Should we transpose the color | |
262 | * @return The X coordinate where we have written | |
263 | */ | |
f1fae91f | 264 | public static int drawText(GC gc, String text, int x, int y, boolean transp) { |
6151d86c PT |
265 | Point size = gc.stringExtent(text); |
266 | gc.drawText(text, x, y, transp); | |
267 | return size.x; | |
268 | } | |
269 | ||
713a70ae PT |
270 | /** |
271 | * Draw text in a rectangle, trimming the text to prevent exceeding the specified width. | |
272 | * | |
273 | * @param gc | |
274 | * The SWT GC object | |
275 | * @param text | |
276 | * The string to be drawn | |
277 | * @param x | |
278 | * The x coordinate of the top left corner of the rectangular area where the text is to be drawn | |
279 | * @param y | |
280 | * The y coordinate of the top left corner of the rectangular area where the text is to be drawn | |
281 | * @param width | |
282 | * The width of the area to be drawn | |
283 | * @param isCentered | |
284 | * If <code>true</code> the text will be centered in the available width if space permits | |
285 | * @param isTransparent | |
286 | * If <code>true</code> the background will be transparent, otherwise it will be opaque | |
287 | * @return The number of characters written | |
288 | * | |
289 | * @since 2.0 | |
290 | */ | |
f1fae91f | 291 | public static int drawText(GC gc, String text, int x, int y, int width, boolean isCentered, boolean isTransparent) { |
713a70ae PT |
292 | int len = text.length(); |
293 | int textWidth = 0; | |
41b5c37f AM |
294 | boolean isReallyCentered = isCentered; |
295 | int realX = x; | |
296 | ||
713a70ae PT |
297 | while (len > 0) { |
298 | textWidth = gc.stringExtent(text.substring(0, len)).x; | |
299 | if (textWidth <= width) { | |
300 | break; | |
301 | } | |
41b5c37f | 302 | isReallyCentered = false; |
713a70ae PT |
303 | len--; |
304 | } | |
305 | if (len > 0) { | |
41b5c37f AM |
306 | if (isReallyCentered) { |
307 | realX += (width - textWidth) / 2; | |
713a70ae | 308 | } |
41b5c37f | 309 | gc.drawText(text.substring(0, len), realX, y, isTransparent); |
713a70ae PT |
310 | } |
311 | return len; | |
312 | } | |
313 | ||
6151d86c PT |
314 | /** |
315 | * Formats time in format: MM:SS:NNN | |
316 | * | |
317 | * @param time time | |
318 | * @param format 0: MMMM:ss:nnnnnnnnn, 1: HH:MM:ss MMM.mmmm.nnn | |
319 | * @param resolution the resolution | |
320 | * @return the formatted time | |
321 | */ | |
f1fae91f | 322 | public static String formatTime(long time, TimeFormat format, Resolution resolution) { |
6151d86c | 323 | // if format is absolute (Calendar) |
026664b7 | 324 | if (format == TimeFormat.CALENDAR) { |
6151d86c | 325 | return formatTimeAbs(time, resolution); |
026664b7 XR |
326 | } else if (format == TimeFormat.NUMBER) { |
327 | return NumberFormat.getInstance().format(time); | |
6151d86c PT |
328 | } |
329 | ||
330 | StringBuffer str = new StringBuffer(); | |
41b5c37f AM |
331 | long t = time; |
332 | boolean neg = t < 0; | |
6151d86c | 333 | if (neg) { |
41b5c37f | 334 | t = -t; |
6151d86c PT |
335 | str.append('-'); |
336 | } | |
337 | ||
f1fae91f | 338 | long sec = t / SEC_IN_NS; |
6151d86c | 339 | str.append(sec); |
41b5c37f | 340 | String ns = formatNs(t, resolution); |
6151d86c PT |
341 | if (!ns.equals("")) { //$NON-NLS-1$ |
342 | str.append('.'); | |
343 | str.append(ns); | |
344 | } | |
345 | ||
346 | return str.toString(); | |
347 | } | |
348 | ||
349 | /** | |
350 | * From input time in nanoseconds, convert to Date format YYYY-MM-dd | |
351 | * | |
352 | * @param absTime | |
353 | * The source time, in ns | |
354 | * @return the formatted date | |
355 | */ | |
356 | public static String formatDate(long absTime) { | |
f1fae91f | 357 | String sdate = DATE_FORMAT.format(new Date(absTime / MILLISEC_IN_NS)); |
6151d86c PT |
358 | return sdate; |
359 | } | |
360 | ||
361 | /** | |
362 | * Formats time in ns to Calendar format: HH:MM:SS MMM.mmm.nnn | |
363 | * | |
364 | * @param time | |
365 | * The source time, in ns | |
366 | * @param res | |
367 | * The resolution to use | |
368 | * @return the formatted time | |
369 | */ | |
f1fae91f | 370 | public static String formatTimeAbs(long time, Resolution res) { |
6151d86c PT |
371 | StringBuffer str = new StringBuffer(); |
372 | ||
373 | // format time from nanoseconds to calendar time HH:MM:SS | |
f1fae91f | 374 | String stime = TIME_FORMAT.format(new Date(time / MILLISEC_IN_NS)); |
6151d86c PT |
375 | str.append(stime); |
376 | str.append('.'); | |
377 | // append the Milliseconds, MicroSeconds and NanoSeconds as specified in | |
378 | // the Resolution | |
379 | str.append(formatNs(time, res)); | |
380 | return str.toString(); | |
381 | } | |
382 | ||
383 | /** | |
384 | * Obtains the remainder fraction on unit Seconds of the entered value in | |
385 | * nanoseconds. e.g. input: 1241207054171080214 ns The number of fraction | |
386 | * seconds can be obtained by removing the last 9 digits: 1241207054 the | |
387 | * fractional portion of seconds, expressed in ns is: 171080214 | |
388 | * | |
41b5c37f | 389 | * @param srcTime |
6151d86c PT |
390 | * The source time in ns |
391 | * @param res | |
392 | * The Resolution to use | |
393 | * @return the formatted nanosec | |
394 | */ | |
41b5c37f | 395 | public static String formatNs(long srcTime, Resolution res) { |
6151d86c | 396 | StringBuffer str = new StringBuffer(); |
41b5c37f | 397 | long time = srcTime; |
f1fae91f | 398 | if (time < 0) { |
6151d86c PT |
399 | time = -time; |
400 | } | |
401 | ||
6151d86c | 402 | long ns = time; |
f1fae91f PT |
403 | ns %= SEC_IN_NS; |
404 | String nanos = Long.toString(ns); | |
405 | str.append("000000000".substring(nanos.length())); //$NON-NLS-1$ | |
406 | str.append(nanos); | |
6151d86c PT |
407 | |
408 | if (res == Resolution.MILLISEC) { | |
409 | return str.substring(0, 3); | |
410 | } else if (res == Resolution.MICROSEC) { | |
411 | return str.substring(0, 6); | |
412 | } else if (res == Resolution.NANOSEC) { | |
413 | return str.substring(0, 9); | |
414 | } | |
415 | return ""; //$NON-NLS-1$ | |
416 | } | |
417 | ||
418 | /** | |
419 | * FIXME Currently does nothing. | |
420 | * | |
421 | * @param opt | |
422 | * The option name | |
423 | * @param def | |
424 | * The option value | |
425 | * @param min | |
426 | * The minimal accepted value | |
427 | * @param max | |
428 | * The maximal accepted value | |
429 | * @return The value that was read | |
430 | */ | |
f1fae91f | 431 | public static int loadIntOption(String opt, int def, int min, int max) { |
6151d86c PT |
432 | return def; |
433 | } | |
434 | ||
435 | /** | |
436 | * FIXME currently does nothing | |
437 | * | |
438 | * @param opt | |
439 | * The option name | |
440 | * @param val | |
441 | * The option value | |
442 | */ | |
f1fae91f | 443 | public static void saveIntOption(String opt, int val) { |
6151d86c PT |
444 | } |
445 | ||
446 | static ITimeEvent getFirstEvent(ITimeGraphEntry entry) { | |
447 | if (null == entry || ! entry.hasTimeEvents()) { | |
448 | return null; | |
449 | } | |
450 | Iterator<ITimeEvent> iterator = entry.getTimeEventsIterator(); | |
451 | if (iterator != null && iterator.hasNext()) { | |
452 | return iterator.next(); | |
453 | } | |
454 | return null; | |
455 | } | |
456 | ||
457 | /** | |
458 | * N means: <list> <li>-1: Previous Event</li> <li>0: Current Event</li> <li> | |
459 | * 1: Next Event</li> <li>2: Previous Event when located in a non Event Area | |
460 | * </list> | |
461 | * | |
462 | * @param entry | |
463 | * @param time | |
464 | * @param n | |
465 | * @return | |
466 | */ | |
467 | static ITimeEvent findEvent(ITimeGraphEntry entry, long time, int n) { | |
468 | if (null == entry || ! entry.hasTimeEvents()) { | |
469 | return null; | |
470 | } | |
471 | Iterator<ITimeEvent> iterator = entry.getTimeEventsIterator(); | |
472 | if (iterator == null) { | |
473 | return null; | |
474 | } | |
475 | ITimeEvent nextEvent = null; | |
476 | ITimeEvent currEvent = null; | |
477 | ITimeEvent prevEvent = null; | |
478 | ||
479 | while (iterator.hasNext()) { | |
480 | nextEvent = iterator.next(); | |
481 | long nextStartTime = nextEvent.getTime(); | |
482 | ||
483 | if (nextStartTime > time) { | |
484 | break; | |
485 | } | |
486 | ||
b905d437 XR |
487 | if (currEvent == null || currEvent.getTime() != nextStartTime || |
488 | (nextStartTime != time && currEvent.getDuration() != nextEvent.getDuration())) { | |
6151d86c PT |
489 | prevEvent = currEvent; |
490 | currEvent = nextEvent; | |
491 | } | |
492 | } | |
493 | ||
494 | if (n == -1) { //previous | |
495 | if (currEvent != null && currEvent.getTime() + currEvent.getDuration() >= time) { | |
496 | return prevEvent; | |
497 | } | |
498 | return currEvent; | |
499 | } else if (n == 0) { //current | |
500 | if (currEvent != null && currEvent.getTime() + currEvent.getDuration() >= time) { | |
501 | return currEvent; | |
502 | } | |
503 | return null; | |
504 | } else if (n == 1) { //next | |
505 | if (nextEvent != null && nextEvent.getTime() > time) { | |
506 | return nextEvent; | |
507 | } | |
508 | return null; | |
509 | } else if (n == 2) { //current or previous when in empty space | |
510 | return currEvent; | |
511 | } | |
512 | ||
513 | return null; | |
514 | } | |
515 | ||
516 | /** | |
517 | * Pretty-print a method signature. | |
518 | * | |
41b5c37f | 519 | * @param origSig |
6151d86c PT |
520 | * The original signature |
521 | * @return The pretty signature | |
522 | */ | |
f1fae91f | 523 | public static String fixMethodSignature(String origSig) { |
41b5c37f | 524 | String sig = origSig; |
6151d86c PT |
525 | int pos = sig.indexOf('('); |
526 | if (pos >= 0) { | |
527 | String ret = sig.substring(0, pos); | |
528 | sig = sig.substring(pos); | |
529 | sig = sig + " " + ret; //$NON-NLS-1$ | |
530 | } | |
531 | return sig; | |
532 | } | |
533 | ||
534 | /** | |
535 | * Restore an original method signature from a pretty-printed one. | |
536 | * | |
41b5c37f | 537 | * @param ppSig |
6151d86c PT |
538 | * The pretty-printed signature |
539 | * @return The original method signature | |
540 | */ | |
f1fae91f | 541 | public static String restoreMethodSignature(String ppSig) { |
6151d86c | 542 | String ret = ""; //$NON-NLS-1$ |
41b5c37f AM |
543 | String sig = ppSig; |
544 | ||
6151d86c PT |
545 | int pos = sig.indexOf('('); |
546 | if (pos >= 0) { | |
547 | ret = sig.substring(0, pos); | |
548 | sig = sig.substring(pos + 1); | |
549 | } | |
550 | pos = sig.indexOf(')'); | |
551 | if (pos >= 0) { | |
552 | sig = sig.substring(0, pos); | |
553 | } | |
554 | String args[] = sig.split(","); //$NON-NLS-1$ | |
555 | StringBuffer result = new StringBuffer("("); //$NON-NLS-1$ | |
556 | for (int i = 0; i < args.length; i++) { | |
557 | String arg = args[i].trim(); | |
558 | if (arg.length() == 0 && args.length == 1) { | |
559 | break; | |
560 | } | |
561 | result.append(getTypeSignature(arg)); | |
562 | } | |
563 | result.append(")").append(getTypeSignature(ret)); //$NON-NLS-1$ | |
564 | return result.toString(); | |
565 | } | |
566 | ||
567 | /** | |
568 | * Get the mangled type information from an array of types. | |
569 | * | |
41b5c37f | 570 | * @param typeStr |
6151d86c PT |
571 | * The types to convert. See method implementation for what it |
572 | * expects. | |
573 | * @return The mangled string of types | |
574 | */ | |
41b5c37f | 575 | public static String getTypeSignature(String typeStr) { |
6151d86c | 576 | int dim = 0; |
41b5c37f | 577 | String type = typeStr; |
6151d86c PT |
578 | for (int j = 0; j < type.length(); j++) { |
579 | if (type.charAt(j) == '[') { | |
580 | dim++; | |
581 | } | |
582 | } | |
583 | int pos = type.indexOf('['); | |
584 | if (pos >= 0) { | |
585 | type = type.substring(0, pos); | |
586 | } | |
587 | StringBuffer sig = new StringBuffer(""); //$NON-NLS-1$ | |
588 | for (int j = 0; j < dim; j++) | |
589 | { | |
41b5c37f | 590 | sig.append("["); //$NON-NLS-1$ |
6151d86c PT |
591 | } |
592 | if (type.equals("boolean")) { //$NON-NLS-1$ | |
593 | sig.append('Z'); | |
594 | } else if (type.equals("byte")) { //$NON-NLS-1$ | |
595 | sig.append('B'); | |
596 | } else if (type.equals("char")) { //$NON-NLS-1$ | |
597 | sig.append('C'); | |
598 | } else if (type.equals("short")) { //$NON-NLS-1$ | |
599 | sig.append('S'); | |
600 | } else if (type.equals("int")) { //$NON-NLS-1$ | |
601 | sig.append('I'); | |
602 | } else if (type.equals("long")) { //$NON-NLS-1$ | |
603 | sig.append('J'); | |
604 | } else if (type.equals("float")) { //$NON-NLS-1$ | |
605 | sig.append('F'); | |
606 | } else if (type.equals("double")) { //$NON-NLS-1$ | |
607 | sig.append('D'); | |
608 | } else if (type.equals("void")) { //$NON-NLS-1$ | |
609 | sig.append('V'); | |
610 | } | |
611 | else { | |
612 | sig.append('L').append(type.replace('.', '/')).append(';'); | |
613 | } | |
614 | return sig.toString(); | |
615 | } | |
616 | ||
617 | /** | |
618 | * Compare two doubles together. | |
619 | * | |
620 | * @param d1 | |
621 | * First double | |
622 | * @param d2 | |
623 | * Second double | |
624 | * @return 1 if they are different, and 0 if they are *exactly* the same. | |
625 | * Because of the way doubles are stored, it's possible for the | |
626 | * same number obtained in two different ways to actually look | |
627 | * different. | |
628 | */ | |
f1fae91f | 629 | public static int compare(double d1, double d2) { |
6151d86c PT |
630 | if (d1 > d2) { |
631 | return 1; | |
632 | } | |
633 | if (d1 < d2) { | |
634 | return 1; | |
635 | } | |
636 | return 0; | |
637 | } | |
638 | ||
639 | /** | |
640 | * Compare two character strings alphabetically. This is simply a wrapper | |
641 | * around String.compareToIgnoreCase but that will handle cases where | |
642 | * strings can be null | |
643 | * | |
644 | * @param s1 | |
645 | * The first string | |
646 | * @param s2 | |
647 | * The second string | |
648 | * @return A number below, equal, or greater than zero if the first string | |
649 | * is smaller, equal, or bigger (alphabetically) than the second | |
650 | * one. | |
651 | */ | |
f1fae91f | 652 | public static int compare(String s1, String s2) { |
6151d86c PT |
653 | if (s1 != null && s2 != null) { |
654 | return s1.compareToIgnoreCase(s2); | |
655 | } | |
656 | if (s1 != null) { | |
657 | return 1; | |
658 | } | |
659 | if (s2 != null) { | |
660 | return -1; | |
661 | } | |
662 | return 0; | |
663 | } | |
664 | } |