|
1
25
26 package com.j2biz.blogunity.util;
27
28 import java.io.File  ;
29 import java.io.FileFilter ;
30 import java.text.SimpleDateFormat ;
31 import java.util.Calendar ;
32 import java.util.Date ;
33 import java.util.Iterator ;
34 import java.util.List ;
35 import java.util.Locale ;
36 import java.util.StringTokenizer ;
37
38 import javax.servlet.http.HttpServletRequest ;
39 import javax.servlet.http.HttpServletResponse ;
40 import javax.servlet.http.HttpSession ;
41
42 import org.apache.commons.lang.StringUtils;
43 import org.apache.commons.logging.Log;
44 import org.apache.commons.logging.LogFactory;
45
46 import com.j2biz.blogunity.BlogunityManager;
47 import com.j2biz.blogunity.IConstants;
48 import com.j2biz.blogunity.dao.CalendarEntryDAO;
49 import com.j2biz.blogunity.dao.UserDAO;
50 import com.j2biz.blogunity.exception.BlogunityException;
51 import com.j2biz.blogunity.exception.BlogunityRuntimeException;
52 import com.j2biz.blogunity.i18n.I18N;
53 import com.j2biz.blogunity.i18n.I18NMessageManager;
54 import com.j2biz.blogunity.i18n.I18NStatusFactory;
55 import com.j2biz.blogunity.pojo.Blog;
56 import com.j2biz.blogunity.pojo.CalendarEntry;
57 import com.j2biz.blogunity.pojo.Category;
58 import com.j2biz.blogunity.pojo.Comment;
59 import com.j2biz.blogunity.pojo.Entry;
60 import com.j2biz.blogunity.pojo.User;
61 import com.j2biz.blogunity.web.FormError;
62 import com.j2biz.blogunity.web.FormErrorList;
63 import com.j2biz.blogunity.web.IActionResult;
64 import com.j2biz.blogunity.web.NavigationStack;
65
66
73 public class BlogUtils {
74
77 private static final Log log = LogFactory.getLog(BlogUtils.class);
78
79 private static BlogUtils INSTANCE = null;
80
81 private BlogUtils() {
82 }
83
84 public static final BlogUtils getInstance() {
85 if (INSTANCE == null) {
86 INSTANCE = new BlogUtils();
87 }
88 return INSTANCE;
89 }
90
91 public static final String getVersion() {
92 return IConstants.VERSION;
93 }
94
95 public static final String getBuild() {
96 return IConstants.BUILD;
97 }
98
99 public static final String getCodename() {
100 return IConstants.CODENAME;
101 }
102
103 public String getSiteTitle() {
104 return BlogunityManager.getSystemConfiguration().getSiteTitle();
105 }
106
107 public String getSiteKeywords() {
108
109 return BlogunityManager.getSystemConfiguration().getSiteKeywords();
110 }
111
112 public String getSiteDescription() {
113
114 return BlogunityManager.getSystemConfiguration().getSiteDescription();
115 }
116
117 public int getNumberOfIndividualBlogsPerUser() {
118 return BlogunityManager.getSystemConfiguration().getIndividualBlogsPerUser();
119 }
120
121 public int getNumberOfCommunityBlogsPerUser() {
122 return BlogunityManager.getSystemConfiguration().getCommunityBlogsPerUser();
123 }
124
125 public int getTotalNumberOfBlogsPerUser() {
126
127 int individual = BlogunityManager.getSystemConfiguration().getIndividualBlogsPerUser();
128 if (individual == -1) return -1;
129
130 int community = BlogunityManager.getSystemConfiguration().getCommunityBlogsPerUser();
131 if (community == -1) return -1;
132
133 return (community + individual);
134 }
135
136 public String formatDate(Date date) {
137
138 String format = BlogunityManager.getSystemConfiguration().getDateFormat();
139
140 SimpleDateFormat f = new SimpleDateFormat (format);
141 return f.format(date).toString();
142 }
143
144 public String formatTime(Date date) {
145
146 String format = BlogunityManager.getSystemConfiguration().getTimeFormat();
147
148 SimpleDateFormat f = new SimpleDateFormat (format);
149 return f.format(date).toString();
150 }
151
152 public String formatDateTime(Date date) {
153
154 String format = BlogunityManager.getSystemConfiguration().getDatetimeFormat();
155
156 SimpleDateFormat f = new SimpleDateFormat (format);
157 return f.format(date).toString();
158 }
159
160
166 public String formatYear(HttpServletRequest request, Date date) {
167 Locale locale = (Locale ) request.getAttribute(IConstants.Request.LOCALE);
168 SimpleDateFormat f = new SimpleDateFormat ("yyyy", locale);
169 return f.format(date).toString();
170 }
171
172
178 public String formatMonth(HttpServletRequest request, Date date) {
179 Locale locale = (Locale ) request.getAttribute(IConstants.Request.LOCALE);
180 SimpleDateFormat f = new SimpleDateFormat ("MMMMM yyyy", locale);
181 return f.format(date).toString();
182 }
183
184
190 public String formatDay(HttpServletRequest request, Date date) {
191 Locale locale = (Locale ) request.getAttribute(IConstants.Request.LOCALE);
192
193 SimpleDateFormat f = new SimpleDateFormat ("EEE, dd MMMMM yyyy", locale);
194 return f.format(date).toString();
195 }
196
197
203 public String formatDayShort(Date date) {
204
205 SimpleDateFormat f = new SimpleDateFormat ("dd.MM");
206 return f.format(date).toString();
207 }
208
209
215 public String formatDayLink(Date date) {
216
217 SimpleDateFormat f = new SimpleDateFormat ("/yyyy/MM/dd");
218 return f.format(date).toString();
219 }
220
221 public boolean isValidEmailAddress(String email) {
222
223 String regex = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9-]+)*(\\.[_A-Za-z0-9-]+)";
224 return email.matches(regex);
225
226 }
227
228 public boolean isValidNickname(String nick) {
229
230 String regex = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*";
231 return nick.matches(regex);
232 }
233
234
241 public boolean isValidBlogname(String name) {
242 String regex = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*";
243 return name.matches(regex);
244 }
245
246
253 public boolean isValidAliasname(String name) {
254 String regex = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*";
255 return name.matches(regex);
256 }
257
258 public NavigationStack getNavigationStack(HttpServletRequest request) {
259 HttpSession session = request.getSession(false);
260 if (session == null) return new NavigationStack();
261
262 NavigationStack stack = (NavigationStack) session
263 .getAttribute(IConstants.Session.NAVIGATION_STACK);
264 if (stack == null) return new NavigationStack();
265 else
266 return stack;
267 }
268
269 public String peekLastActionFromStack(HttpServletRequest request) {
270 NavigationStack stack = getNavigationStack(request);
271
272 if (stack == null || stack.empty()) return null;
273 IActionResult result = stack.peek();
274 return request.getContextPath() + result.getPath();
275 }
276
277 public String peekNextToLastActionFromStack(HttpServletRequest request) {
278 NavigationStack stack = getNavigationStack(request);
279
280 if (stack == null || stack.empty()) return null;
281 IActionResult result = stack.peekNextToLast();
282
283 if (result == null) return null;
284
285 return request.getContextPath() + result.getPath();
286 }
287
288
295 public String renderUser(User user, HttpServletRequest request) {
296 StringBuffer out = new StringBuffer ();
297
298 if (user == null) {
299 out.append("anonymous");
300 return out.toString();
301 }
302
303 out.append("<nobr>");
304 out.append("<img SRC=\"" + request.getContextPath() + "/images/"
305 + ((user.getSex() == User.MALE) ? "male.gif" : "female.gif") + "\">");
306 out.append("<a HREF=\"" + request.getContextPath() + "/users/" + user.getNickname()
307 + "\" title=\"" + user.getFirstname() + " " + user.getLastname() + "\">");
308 out.append(user.getNickname());
309 out.append("</a>");
310
311 if (BlogunityManager.getSystemConfiguration().isRankingOn()) {
313 out.append("<sup>");
314 out.append("<img SRC=\"");
315 out.append(request.getContextPath() + "/images/ranks/newbie1.gif");
316 out.append("\" title=\"just a simple user ranking\">");
317 out.append("</sup>");
318 }
319
320 User loggedUser = null;
321 HttpSession session = request.getSession(false);
322 if (session != null) loggedUser = (User) session.getAttribute(IConstants.Session.USER);
323
324 if (loggedUser != null && loggedUser.getId().longValue() != user.getId().longValue()) {
325
326 try {
327 UserDAO dao = new UserDAO();
329 loggedUser = dao.getUserByID(loggedUser.getId());
330 } catch (BlogunityException e) {
331 return out.toString();
332 }
333
334 if (loggedUser.containsAsFriend(user)) {
335 out.append("<sup><a HREF=\"" + request.getContextPath()
336 + "/my/deleteFriendConfirm?id=" + user.getId()
337 + "\" title=\"remove from friends\">" + "<img SRC=\""
338 + request.getContextPath() + "/images/friend_remove.gif\" border=\"0\">"
339 + "</a></sup>");
340 } else {
341 out.append("<sup><a HREF=\"" + request.getContextPath() + "/my/addFriend?nickname="
342 + user.getNickname() + "\" title=\"add to friends\">" + "<img SRC=\""
343 + request.getContextPath() + "/images/friend_add.gif\" border=\"0\">"
344 + "</a></sup>");
345 }
346 }
347 out.append("</nobr>");
348 return out.toString();
349
350 }
351
352
360 public String renderCategory(Blog b, Category category, HttpServletRequest request) {
361
362 StringBuffer out = new StringBuffer ();
363 out.append("<nobr>");
364 out.append("<a HREF=\""
365 + BlogunityManager.getBase()
366 + "/blogs/"
367 + b.getUrlName()
368 + "/category/"
369 + category.getId()
370 + "\" title=\""
371 + (StringUtils.isEmpty(category.getDescription()) ? category.getName() : category
372 .getDescription()) + "\">");
373 out.append(category.getName());
374
375 out.append("</a>");
376 out.append("<sup>");
377 out.append((category.getType() == Category.GLOBAL) ? "<img SRC=\""
378 + request.getContextPath()
379 + "/images/category_global.gif\" title=\"global blogunity category\">"
380 : "<img SRC=\"" + request.getContextPath()
381 + "/images/category_local.gif\" title=\"local blog category\">");
382 out.append("</sup>");
383 out.append("</nobr>");
384 return out.toString();
385 }
386
387
394 public String renderBlog(Blog blog, HttpServletRequest request) {
395
396 String style = "individual_blog";
397 String title = "individual blog";
398 if (blog.getType() == Blog.COMMUNITY_BLOG) {
399 if (blog.getCommunityType() == Blog.PUBLIC_COMMUNTIY) {
400 style = "public_community_blog";
401 title = "public community blog";
402 } else if (blog.getCommunityType() == Blog.PRIVATE_COMMUNTIY) {
403 style = "private_community_blog";
404 title = "private community blog";
405 }
406 }
407
408 String icon = BlogunityManager.getBase() + "/images/" + style + ".gif";
409 StringBuffer out = new StringBuffer ();
410 out.append("<nobr>");
411 out.append("<img SRC=\"" + icon + "\"/> ");
412 out.append("<a class=\"" + style + "\" HREF=\"" + BlogunityManager.getBase() + "/blogs/"
413 + blog.getUrlName() + "\" title=\"" + title + "\">");
414 out.append(blog.getFullName());
415 out.append("</a>");
416 out.append("</nobr>");
417 return out.toString();
418
419 }
420
421
428 public String renderEntry(Entry entry, HttpServletRequest request) {
429 StringBuffer out = new StringBuffer ();
430 out.append("<nobr>");
431 String icon = BlogunityManager.getBase() + "/images/entry.gif";
432 out.append("<img SRC=\"" + icon + "\"/> ");
433 out.append("<a class=\"entry\" HREF=\"" + BlogunityManager.getBase() + "/blogs/"
434 + entry.getBlog().getUrlName() + entry.getPermalink() + "\" title=\""
435 + entry.getTitle() + "\">");
436 out.append(StringUtils.abbreviate(entry.getTitle(), 100));
437 out.append("</a>");
438 out.append("</nobr>");
439 return out.toString();
440 }
441
442
449 public String renderComment(Comment comment, HttpServletRequest request) {
450 StringBuffer out = new StringBuffer ();
451 out.append("<nobr>");
452
453 String icon = BlogunityManager.getBase() + "/images/comment.gif";
454 out.append("<img SRC=\"" + icon + "\"/> ");
455 out.append("<a class=\"comment\" HREF=\"" + BlogunityManager.getBase() + "/blogs/"
456 + comment.getCommentedEntry().getBlog().getUrlName()
457 + comment.getCommentedEntry().getPermalink() + "#" + comment.getId()
458 + "\" title=\"" + comment.getTitle() + "\">");
459
460 out.append(StringUtils.abbreviate(comment.getTitle(), 100));
461 out.append("</a>");
462 out.append("</nobr>");
463 return out.toString();
464 }
465
466 public String showErrors(FormErrorList errors, String key) {
467 StringBuffer out = new StringBuffer ();
468 if (errors != null && errors.size() > 0) {
469 for (Iterator iter = errors.get(key).iterator(); iter.hasNext();) {
470 FormError err = (FormError) iter.next();
471 out.append(err.getValue() + "<br/>");
472 }
473 }
474 return out.toString();
475 }
476
477 public String showErrorsLayer(FormErrorList errors, String key) {
478 StringBuffer out = new StringBuffer ();
479 if (errors != null && errors.containsErrorsForKey(key)) {
480 out.append("<div id=\"");
481 out.append("errorLayer");
482 out.append(StringUtils.capitalize(key));
483 out.append("\"");
484 out
485 .append("style=\"display: none; visibility: hidden; position: relative; padding-bottom: 5px;");
486 out
487 .append("padding-top: 0px; padding-left: 7px; margin-bottom: 5px; margin-top: 0px; color: #A1231F;\">");
488 out.append(showErrors(errors, key));
489 out.append("</div>");
490 }
491
492 return out.toString();
493 }
494
495 public String drawCalendar(HttpServletRequest request, HttpServletResponse response) {
496
497 Locale locale = (Locale ) request.getAttribute(IConstants.Request.LOCALE);
498
499 Blog blog = (Blog) request.getAttribute("blog");
501 if (blog == null) {
502 return I18NMessageManager.getInstance().getError(I18N.ERRORS.DRAWING_CALENDAR_FAILED);
503 }
504
505 Date now = new Date ();
506 Date requestedDate = new Date ();
507
508
510 String baseWithBlogname = BlogunityManager.getBase() + "/blogs/" + blog.getUrlName();
511 String url = StringUtils.substringAfter(request.getRequestURL().toString(),
512 baseWithBlogname);
513
514 if (url.matches(IConstants.PATTERNS.GLOBAL_CALENDAR_PATTERN)) {
515
516 if (url.startsWith("/")) url = url.substring(1);
517
518 StringTokenizer st = new StringTokenizer (url, "/");
519
520 int year = 2005;
521 int month = Calendar.JANUARY;
522 int day = 1;
523
524 if (st.hasMoreTokens()) {
526 String yearStr = st.nextToken();
527 try {
528 year = Integer.parseInt(yearStr);
529 } catch (NumberFormatException e) {
530 year = 2005;
531 }
532 }
533
534 if (st.hasMoreTokens()) {
536 String monthStr = st.nextToken();
537 try {
538 month = Integer.parseInt(monthStr) - 1;
539 if (month < Calendar.JANUARY || month > Calendar.DECEMBER)
540 month = Calendar.JANUARY;
541 } catch (NumberFormatException e) {
542 month = Calendar.JANUARY;
543 }
544 }
545
546 if (st.hasMoreTokens()) {
548 String dayStr = st.nextToken();
549 try {
550 day = Integer.parseInt(dayStr);
551 if (day < 1 || day > 31) day = 1;
552 } catch (NumberFormatException e) {
553 day = 1;
554 }
555 }
556
557 Calendar dayObj = Calendar.getInstance();
558 dayObj.set(year, month, day, 0, 0, 0);
559 requestedDate = dayObj.getTime();
560 }
561
562 Calendar currentMonth = Calendar.getInstance();
563 currentMonth.setTime(requestedDate);
564
565 Calendar prevMonth = Calendar.getInstance();
566 prevMonth.setTime(requestedDate);
567 prevMonth.add(Calendar.MONTH, -1);
568
569 Calendar nextMonth = Calendar.getInstance();
570 nextMonth.setTime(requestedDate);
571 nextMonth.add(Calendar.MONTH, 1);
572
573 StringBuffer out = new StringBuffer ();
574
575 out.append("<table width=\"100%\" cellpadding=\"1\" cellspacing=\"1\">");
576
577 out.append("<tr>");
579 out.append("<td colspan=\"7\" align=\"center\">");
580 int temp = (prevMonth.get(Calendar.MONTH) + 1);
581 out.append("<a HREF=\"" + baseWithBlogname + "/" + prevMonth.get(Calendar.YEAR) + "/"
582 + ((temp < 10) ? "0" + temp : "" + temp) + "\"><</a> ");
583
584 temp = (currentMonth.get(Calendar.MONTH) + 1);
585 out.append("<a HREF=\"" + baseWithBlogname + "/" + currentMonth.get(Calendar.YEAR) + "/"
586 + ((temp < 10) ? "0" + temp : "" + temp) + "\">"
587 + new SimpleDateFormat ("MMMM", locale).format(currentMonth.getTime())
588 + "</a> ");
589
590 String monthFormat = new SimpleDateFormat ("yyyy", locale).format(currentMonth.getTime());
591 out.append("<a HREF=\"" + baseWithBlogname + "/" + currentMonth.get(Calendar.YEAR) + "\">"
592 + monthFormat + "</a> ");
593
594 temp = (nextMonth.get(Calendar.MONTH) + 1);
595 out.append("<a HREF=\"" + baseWithBlogname + "/" + nextMonth.get(Calendar.YEAR) + "/"
596 + ((temp < 10) ? "0" + temp : "" + temp) + "\">></a> ");
597
598 out.append("</td>");
599 out.append("</tr>");
600
601 SimpleDateFormat fmt = new SimpleDateFormat ("EE", locale);
603 Calendar daysOfWeek = Calendar.getInstance();
604 daysOfWeek.setTime(currentMonth.getTime());
605
606 int FIRST_DAY_OF_WEEK = daysOfWeek.getFirstDayOfWeek();
607
608 for (int i = 1; i < 20; i++) {
609 daysOfWeek.add(Calendar.DAY_OF_MONTH, 1);
610 if (daysOfWeek.get(Calendar.DAY_OF_WEEK) == FIRST_DAY_OF_WEEK) break;
611 }
612 out.append("<tr>\n");
613 out.append("<td><b>" + fmt.format(daysOfWeek.getTime()) + "</b></td>\n");
614 daysOfWeek.add(Calendar.DAY_OF_MONTH, 1);
615 out.append("<td><b>" + fmt.format(daysOfWeek.getTime()) + "</b></td>\n");
616 daysOfWeek.add(Calendar.DAY_OF_MONTH, 1);
617 out.append("<td><b>" + fmt.format(daysOfWeek.getTime()) + "</b></td>\n");
618 daysOfWeek.add(Calendar.DAY_OF_MONTH, 1);
619 out.append("<td><b>" + fmt.format(daysOfWeek.getTime()) + "</b></td>\n");
620 daysOfWeek.add(Calendar.DAY_OF_MONTH, 1);
621 out.append("<td><b>" + fmt.format(daysOfWeek.getTime()) + "</b></td>\n");
622 daysOfWeek.add(Calendar.DAY_OF_MONTH, 1);
623 out.append("<td><b>" + fmt.format(daysOfWeek.getTime()) + "</b></td>\n");
624 daysOfWeek.add(Calendar.DAY_OF_MONTH, 1);
625 out.append("<td><b>" + fmt.format(daysOfWeek.getTime()) + "</b></td>\n");
626 out.append("</tr>\n");
627
628 Calendar today = Calendar.getInstance();
630 today.setTime(currentMonth.getTime());
631 today.set(Calendar.DAY_OF_MONTH, 1);
632
633 int spacer = (today.get(Calendar.DAY_OF_WEEK) - FIRST_DAY_OF_WEEK);
634
635 int month = today.get(Calendar.MONTH);
636 if (spacer < 0) spacer = 7 + spacer;
637
638 out.append("<tr>\n");
639
640 if (spacer > 0) out.append("<td colspan=\"" + spacer + "\"> </td>\n");
641
642 List calendarEntries;
643 try {
644 CalendarEntryDAO dao = new CalendarEntryDAO();
645 calendarEntries = dao.getCalendarEntryForBlogByMonthYear(blog, today
646 .get(Calendar.MONTH) + 1, today.get(Calendar.YEAR));
647 } catch (BlogunityException e) {
648 throw new BlogunityRuntimeException(I18NStatusFactory.create(
649 I18N.ERRORS.DRAWING_CALENDAR_FAILED, e));
650 }
651
652 int currentWeek = today.get(Calendar.WEEK_OF_MONTH);
653 while (today.get(Calendar.MONTH) == month) {
654
655 if (currentWeek != today.get(Calendar.WEEK_OF_MONTH)) {
656 out.append("</tr>\n");
657 out.append("<tr>\n");
658 currentWeek = today.get(Calendar.WEEK_OF_MONTH);
659 }
660
661 out.append("<td>");
662
663 String _day = (today.get(Calendar.DAY_OF_MONTH) < 10) ? "0"
664 + today.get(Calendar.DAY_OF_MONTH) : "" + today.get(Calendar.DAY_OF_MONTH);
665
666 CalendarEntry e = findEntryForDay(calendarEntries, today.get(Calendar.DAY_OF_MONTH));
667 if (e != null) {
668 String _year = String.valueOf(today.get(Calendar.YEAR));
670
671 int x = today.get(Calendar.MONTH) + 1;
672 String _month = (x < 10) ? "0" + x : "" + x;
673
674 out.append("<a HREF=\"" + baseWithBlogname + "/" + _year + "/" + _month + "/"
675 + _day + "\" title=\"" + e.getNumberOfMessages() + " entries\">");
676 out.append(_day);
677 out.append("</a>");
678 } else {
679 out.append(_day);
680 }
681 out.append("</td>\n");
682
683 today.add(Calendar.DAY_OF_MONTH, 1);
684 }
685
686 spacer = (today.get(Calendar.DAY_OF_WEEK) - today.getFirstDayOfWeek());
687 if (spacer < 0) spacer = 7 + spacer;
688 if (spacer > 0) out.append("<td colspan=\"" + (7 - spacer) + "\"> </td>\n");
689 out.append("</tr>\n");
690
691
693 out.append("<tr>");
694 out.append("<td colspan=\"7\" align=\"center\">");
695 out.append("<a HREF=\"" + baseWithBlogname
696 + new SimpleDateFormat ("/yyyy/MM/dd").format(now) + "\">"
697 + I18NMessageManager.getInstance().getMessage("CALENDAR_TODAY", locale)
698 + "</a> ");
699 out.append("| <a HREF=\"" + baseWithBlogname + "\">"
700 + I18NMessageManager.getInstance().getMessage("CALENDAR_FRONTPAGE", locale)
701 + "</a>");
702 out.append("</td></tr>");
703
704 out.append("</table>");
705
706 return out.toString();
707
708 }
709
710 public File [] getThemeDirectories() throws BlogunityException {
711 File defaultThemesDir = new File (BlogunityManager.getServletContext().getRealPath(
712 IConstants.BLOG_THEMES_DIRECTORY));
713
714 if (!defaultThemesDir.exists() || !defaultThemesDir.isDirectory()
715 || !defaultThemesDir.canRead()) { throw new BlogunityException(I18NStatusFactory
716 .create(I18N.ERRORS.THEME_READ_ERROR)); }
717
718 File [] themeDirs = defaultThemesDir.listFiles(new FileFilter () {
719 public boolean accept(File f) {
720 if (f.isDirectory() && f.canRead()) {
721 if (f.list().length <= 0) return false;
722 return true;
723 }
724 return false;
725 }
726 });
727
728 return themeDirs;
729 }
730
731 private CalendarEntry findEntryForDay(List entries, int day) {
732
733 for (Iterator it = entries.iterator(); it.hasNext();) {
734 CalendarEntry e = (CalendarEntry) it.next();
735 if (e.getDay() == day) return e;
736 }
737
738 return null;
739 }
740
741 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.