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ui-shared: generate proper links in cgit_object_link()
[ps-cgit] / ui-shared.c
1 /* ui-shared.c: common web output functions
2  *
3  * Copyright (C) 2006 Lars Hjemli
4  *
5  * Licensed under GNU General Public License v2
6  *   (see COPYING for full license text)
7  */
8
9 #include "cgit.h"
10 #include "cmd.h"
11 #include "html.h"
12
13 const char cgit_doctype[] =
14 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
15 "  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
16
17 static char *http_date(time_t t)
18 {
19         static char day[][4] =
20                 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
21         static char month[][4] =
22                 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
23                  "Jul", "Aug", "Sep", "Oct", "Now", "Dec"};
24         struct tm *tm = gmtime(&t);
25         return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
26                    tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
27                    tm->tm_hour, tm->tm_min, tm->tm_sec);
28 }
29
30 void cgit_print_error(char *msg)
31 {
32         html("<div class='error'>");
33         html_txt(msg);
34         html("</div>\n");
35 }
36
37 char *cgit_hosturl()
38 {
39         char *host, *port;
40
41         host = getenv("HTTP_HOST");
42         if (host) {
43                 host = xstrdup(host);
44         } else {
45                 host = getenv("SERVER_NAME");
46                 if (!host)
47                         return NULL;
48                 port = getenv("SERVER_PORT");
49                 if (port && atoi(port) != 80)
50                         host = xstrdup(fmt("%s:%d", host, atoi(port)));
51                 else
52                         host = xstrdup(host);
53         }
54         return host;
55 }
56
57 char *cgit_rooturl()
58 {
59         if (ctx.cfg.virtual_root)
60                 return fmt("%s/", ctx.cfg.virtual_root);
61         else
62                 return ctx.cfg.script_name;
63 }
64
65 char *cgit_repourl(const char *reponame)
66 {
67         if (ctx.cfg.virtual_root) {
68                 return fmt("%s/%s/", ctx.cfg.virtual_root, reponame);
69         } else {
70                 return fmt("?r=%s", reponame);
71         }
72 }
73
74 char *cgit_fileurl(const char *reponame, const char *pagename,
75                    const char *filename, const char *query)
76 {
77         char *tmp;
78         char *delim;
79
80         if (ctx.cfg.virtual_root) {
81                 tmp = fmt("%s/%s/%s/%s", ctx.cfg.virtual_root, reponame,
82                           pagename, (filename ? filename:""));
83                 delim = "?";
84         } else {
85                 tmp = fmt("?url=%s/%s/%s", reponame, pagename,
86                           (filename ? filename : ""));
87                 delim = "&";
88         }
89         if (query)
90                 tmp = fmt("%s%s%s", tmp, delim, query);
91         return tmp;
92 }
93
94 char *cgit_pageurl(const char *reponame, const char *pagename,
95                    const char *query)
96 {
97         return cgit_fileurl(reponame,pagename,0,query);
98 }
99
100 const char *cgit_repobasename(const char *reponame)
101 {
102         /* I assume we don't need to store more than one repo basename */
103         static char rvbuf[1024];
104         int p;
105         const char *rv;
106         strncpy(rvbuf,reponame,sizeof(rvbuf));
107         if(rvbuf[sizeof(rvbuf)-1])
108                 die("cgit_repobasename: truncated repository name '%s'", reponame);
109         p = strlen(rvbuf)-1;
110         /* strip trailing slashes */
111         while(p && rvbuf[p]=='/') rvbuf[p--]=0;
112         /* strip trailing .git */
113         if(p>=3 && !strncmp(&rvbuf[p-3],".git",4)) {
114                 p -= 3; rvbuf[p--] = 0;
115         }
116         /* strip more trailing slashes if any */
117         while( p && rvbuf[p]=='/') rvbuf[p--]=0;
118         /* find last slash in the remaining string */
119         rv = strrchr(rvbuf,'/');
120         if(rv)
121                 return ++rv;
122         return rvbuf;
123 }
124
125 char *cgit_currurl()
126 {
127         if (!ctx.cfg.virtual_root)
128                 return ctx.cfg.script_name;
129         else if (ctx.qry.page)
130                 return fmt("%s/%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo, ctx.qry.page);
131         else if (ctx.qry.repo)
132                 return fmt("%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo);
133         else
134                 return fmt("%s/", ctx.cfg.virtual_root);
135 }
136
137 static void site_url(char *page, char *search, int ofs)
138 {
139         char *delim = "?";
140
141         if (ctx.cfg.virtual_root) {
142                 html_attr(ctx.cfg.virtual_root);
143                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
144                         html("/");
145         } else
146                 html(ctx.cfg.script_name);
147
148         if (page) {
149                 htmlf("?p=%s", page);
150                 delim = "&";
151         }
152         if (search) {
153                 html(delim);
154                 html("q=");
155                 html_attr(search);
156                 delim = "&";
157         }
158         if (ofs) {
159                 html(delim);
160                 htmlf("ofs=%d", ofs);
161         }
162 }
163
164 static void site_link(char *page, char *name, char *title, char *class,
165                       char *search, int ofs)
166 {
167         html("<a");
168         if (title) {
169                 html(" title='");
170                 html_attr(title);
171                 html("'");
172         }
173         if (class) {
174                 html(" class='");
175                 html_attr(class);
176                 html("'");
177         }
178         html(" href='");
179         site_url(page, search, ofs);
180         html("'>");
181         html_txt(name);
182         html("</a>");
183 }
184
185 void cgit_index_link(char *name, char *title, char *class, char *pattern,
186                      int ofs)
187 {
188         site_link(NULL, name, title, class, pattern, ofs);
189 }
190
191 static char *repolink(char *title, char *class, char *page, char *head,
192                       char *path)
193 {
194         char *delim = "?";
195
196         html("<a");
197         if (title) {
198                 html(" title='");
199                 html_attr(title);
200                 html("'");
201         }
202         if (class) {
203                 html(" class='");
204                 html_attr(class);
205                 html("'");
206         }
207         html(" href='");
208         if (ctx.cfg.virtual_root) {
209                 html_url_path(ctx.cfg.virtual_root);
210                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
211                         html("/");
212                 html_url_path(ctx.repo->url);
213                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
214                         html("/");
215                 if (page) {
216                         html_url_path(page);
217                         html("/");
218                         if (path)
219                                 html_url_path(path);
220                 }
221         } else {
222                 html(ctx.cfg.script_name);
223                 html("?url=");
224                 html_url_arg(ctx.repo->url);
225                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
226                         html("/");
227                 if (page) {
228                         html_url_arg(page);
229                         html("/");
230                         if (path)
231                                 html_url_arg(path);
232                 }
233                 delim = "&amp;";
234         }
235         if (head && strcmp(head, ctx.repo->defbranch)) {
236                 html(delim);
237                 html("h=");
238                 html_url_arg(head);
239                 delim = "&amp;";
240         }
241         return fmt("%s", delim);
242 }
243
244 static void reporevlink(char *page, char *name, char *title, char *class,
245                         char *head, char *rev, char *path)
246 {
247         char *delim;
248
249         delim = repolink(title, class, page, head, path);
250         if (rev && strcmp(rev, ctx.qry.head)) {
251                 html(delim);
252                 html("id=");
253                 html_url_arg(rev);
254         }
255         html("'>");
256         html_txt(name);
257         html("</a>");
258 }
259
260 void cgit_summary_link(char *name, char *title, char *class, char *head)
261 {
262         reporevlink(NULL, name, title, class, head, NULL, NULL);
263 }
264
265 void cgit_tree_link(char *name, char *title, char *class, char *head,
266                     char *rev, char *path)
267 {
268         reporevlink("tree", name, title, class, head, rev, path);
269 }
270
271 void cgit_plain_link(char *name, char *title, char *class, char *head,
272                      char *rev, char *path)
273 {
274         reporevlink("plain", name, title, class, head, rev, path);
275 }
276
277 void cgit_log_link(char *name, char *title, char *class, char *head,
278                    char *rev, char *path, int ofs, char *grep, char *pattern)
279 {
280         char *delim;
281
282         delim = repolink(title, class, "log", head, path);
283         if (rev && strcmp(rev, ctx.qry.head)) {
284                 html(delim);
285                 html("id=");
286                 html_url_arg(rev);
287                 delim = "&";
288         }
289         if (grep && pattern) {
290                 html(delim);
291                 html("qt=");
292                 html_url_arg(grep);
293                 delim = "&";
294                 html(delim);
295                 html("q=");
296                 html_url_arg(pattern);
297         }
298         if (ofs > 0) {
299                 html(delim);
300                 html("ofs=");
301                 htmlf("%d", ofs);
302         }
303         html("'>");
304         html_txt(name);
305         html("</a>");
306 }
307
308 void cgit_commit_link(char *name, char *title, char *class, char *head,
309                       char *rev)
310 {
311         if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
312                 name[ctx.cfg.max_msg_len] = '\0';
313                 name[ctx.cfg.max_msg_len - 1] = '.';
314                 name[ctx.cfg.max_msg_len - 2] = '.';
315                 name[ctx.cfg.max_msg_len - 3] = '.';
316         }
317         reporevlink("commit", name, title, class, head, rev, NULL);
318 }
319
320 void cgit_refs_link(char *name, char *title, char *class, char *head,
321                     char *rev, char *path)
322 {
323         reporevlink("refs", name, title, class, head, rev, path);
324 }
325
326 void cgit_snapshot_link(char *name, char *title, char *class, char *head,
327                         char *rev, char *archivename)
328 {
329         reporevlink("snapshot", name, title, class, head, rev, archivename);
330 }
331
332 void cgit_diff_link(char *name, char *title, char *class, char *head,
333                     char *new_rev, char *old_rev, char *path)
334 {
335         char *delim;
336
337         delim = repolink(title, class, "diff", head, path);
338         if (new_rev && strcmp(new_rev, ctx.qry.head)) {
339                 html(delim);
340                 html("id=");
341                 html_url_arg(new_rev);
342                 delim = "&amp;";
343         }
344         if (old_rev) {
345                 html(delim);
346                 html("id2=");
347                 html_url_arg(old_rev);
348         }
349         html("'>");
350         html_txt(name);
351         html("</a>");
352 }
353
354 void cgit_patch_link(char *name, char *title, char *class, char *head,
355                      char *rev)
356 {
357         reporevlink("patch", name, title, class, head, rev, NULL);
358 }
359
360 void cgit_object_link(struct object *obj)
361 {
362         char *page, *rev, *name;
363
364         if (obj->type == OBJ_COMMIT) {
365                 cgit_commit_link(fmt("commit %s", sha1_to_hex(obj->sha1)), NULL, NULL,
366                                  ctx.qry.head, sha1_to_hex(obj->sha1));
367                 return;
368         } else if (obj->type == OBJ_TREE)
369                 page = "tree";
370         else if (obj->type == OBJ_TAG)
371                 page = "tag";
372         else
373                 page = "blob";
374         rev = sha1_to_hex(obj->sha1);
375         name = fmt("%s %s", typename(obj->type), rev);
376         reporevlink(page, name, NULL, NULL, ctx.qry.head, rev, NULL);
377 }
378
379 void cgit_print_date(time_t secs, char *format, int local_time)
380 {
381         char buf[64];
382         struct tm *time;
383
384         if (!secs)
385                 return;
386         if(local_time)
387                 time = localtime(&secs);
388         else
389                 time = gmtime(&secs);
390         strftime(buf, sizeof(buf)-1, format, time);
391         html_txt(buf);
392 }
393
394 void cgit_print_age(time_t t, time_t max_relative, char *format)
395 {
396         time_t now, secs;
397
398         if (!t)
399                 return;
400         time(&now);
401         secs = now - t;
402
403         if (secs > max_relative && max_relative >= 0) {
404                 cgit_print_date(t, format, ctx.cfg.local_time);
405                 return;
406         }
407
408         if (secs < TM_HOUR * 2) {
409                 htmlf("<span class='age-mins'>%.0f min.</span>",
410                       secs * 1.0 / TM_MIN);
411                 return;
412         }
413         if (secs < TM_DAY * 2) {
414                 htmlf("<span class='age-hours'>%.0f hours</span>",
415                       secs * 1.0 / TM_HOUR);
416                 return;
417         }
418         if (secs < TM_WEEK * 2) {
419                 htmlf("<span class='age-days'>%.0f days</span>",
420                       secs * 1.0 / TM_DAY);
421                 return;
422         }
423         if (secs < TM_MONTH * 2) {
424                 htmlf("<span class='age-weeks'>%.0f weeks</span>",
425                       secs * 1.0 / TM_WEEK);
426                 return;
427         }
428         if (secs < TM_YEAR * 2) {
429                 htmlf("<span class='age-months'>%.0f months</span>",
430                       secs * 1.0 / TM_MONTH);
431                 return;
432         }
433         htmlf("<span class='age-years'>%.0f years</span>",
434               secs * 1.0 / TM_YEAR);
435 }
436
437 void cgit_print_http_headers(struct cgit_context *ctx)
438 {
439         if (ctx->page.mimetype && ctx->page.charset)
440                 htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
441                       ctx->page.charset);
442         else if (ctx->page.mimetype)
443                 htmlf("Content-Type: %s\n", ctx->page.mimetype);
444         if (ctx->page.size)
445                 htmlf("Content-Length: %ld\n", ctx->page.size);
446         if (ctx->page.filename)
447                 htmlf("Content-Disposition: inline; filename=\"%s\"\n",
448                       ctx->page.filename);
449         htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
450         htmlf("Expires: %s\n", http_date(ctx->page.expires));
451         html("\n");
452 }
453
454 void cgit_print_docstart(struct cgit_context *ctx)
455 {
456         char *host = cgit_hosturl();
457         html(cgit_doctype);
458         html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
459         html("<head>\n");
460         html("<title>");
461         html_txt(ctx->page.title);
462         html("</title>\n");
463         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
464         if (ctx->cfg.robots && *ctx->cfg.robots)
465                 htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
466         html("<link rel='stylesheet' type='text/css' href='");
467         html_attr(ctx->cfg.css);
468         html("'/>\n");
469         if (ctx->cfg.favicon) {
470                 html("<link rel='shortcut icon' href='");
471                 html_attr(ctx->cfg.favicon);
472                 html("'/>\n");
473         }
474         if (host && ctx->repo) {
475                 html("<link rel='alternate' title='Atom feed' href='http://");
476                 html_attr(cgit_hosturl());
477                 html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.path,
478                                        fmt("h=%s", ctx->qry.head)));
479                 html("' type='application/atom+xml'/>");
480         }
481         html("</head>\n");
482         html("<body>\n");
483 }
484
485 void cgit_print_docend()
486 {
487         html("</div>");
488         if (ctx.cfg.footer)
489                 html_include(ctx.cfg.footer);
490         else {
491                 htmlf("<div class='footer'>generated  by cgit %s at ",
492                         cgit_version);
493                 cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
494                 html("</div>\n");
495         }
496         html("</body>\n</html>\n");
497 }
498
499 int print_branch_option(const char *refname, const unsigned char *sha1,
500                         int flags, void *cb_data)
501 {
502         char *name = (char *)refname;
503         html_option(name, name, ctx.qry.head);
504         return 0;
505 }
506
507 int print_archive_ref(const char *refname, const unsigned char *sha1,
508                        int flags, void *cb_data)
509 {
510         struct tag *tag;
511         struct taginfo *info;
512         struct object *obj;
513         char buf[256], *url;
514         unsigned char fileid[20];
515         int *header = (int *)cb_data;
516
517         if (prefixcmp(refname, "refs/archives"))
518                 return 0;
519         strncpy(buf, refname+14, sizeof(buf));
520         obj = parse_object(sha1);
521         if (!obj)
522                 return 1;
523         if (obj->type == OBJ_TAG) {
524                 tag = lookup_tag(sha1);
525                 if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
526                         return 0;
527                 hashcpy(fileid, tag->tagged->sha1);
528         } else if (obj->type != OBJ_BLOB) {
529                 return 0;
530         } else {
531                 hashcpy(fileid, sha1);
532         }
533         if (!*header) {
534                 html("<h1>download</h1>\n");
535                 *header = 1;
536         }
537         url = cgit_pageurl(ctx.qry.repo, "blob",
538                            fmt("id=%s&amp;path=%s", sha1_to_hex(fileid),
539                                buf));
540         html_link_open(url, NULL, "menu");
541         html_txt(strlpart(buf, 20));
542         html_link_close();
543         return 0;
544 }
545
546 void add_hidden_formfields(int incl_head, int incl_search, char *page)
547 {
548         char *url;
549
550         if (!ctx.cfg.virtual_root) {
551                 url = fmt("%s/%s", ctx.qry.repo, page);
552                 if (ctx.qry.path)
553                         url = fmt("%s/%s", url, ctx.qry.path);
554                 html_hidden("url", url);
555         }
556
557         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
558             strcmp(ctx.qry.head, ctx.repo->defbranch))
559                 html_hidden("h", ctx.qry.head);
560
561         if (ctx.qry.sha1)
562                 html_hidden("id", ctx.qry.sha1);
563         if (ctx.qry.sha2)
564                 html_hidden("id2", ctx.qry.sha2);
565
566         if (incl_search) {
567                 if (ctx.qry.grep)
568                         html_hidden("qt", ctx.qry.grep);
569                 if (ctx.qry.search)
570                         html_hidden("q", ctx.qry.search);
571         }
572 }
573
574 char *hc(struct cgit_cmd *cmd, const char *page)
575 {
576         return (strcmp(cmd->name, page) ? NULL : "active");
577 }
578
579 void cgit_print_pageheader(struct cgit_context *ctx)
580 {
581         struct cgit_cmd *cmd = cgit_get_cmd(ctx);
582
583         html("<table id='header'>\n");
584         html("<tr>\n");
585         html("<td class='logo' rowspan='2'><a href='");
586         if (ctx->cfg.logo_link)
587                 html_attr(ctx->cfg.logo_link);
588         else
589                 html_attr(cgit_rooturl());
590         html("'><img src='");
591         html_attr(ctx->cfg.logo);
592         html("' alt='cgit logo'/></a></td>\n");
593
594         html("<td class='main'>");
595         if (ctx->repo) {
596                 cgit_index_link("index", NULL, NULL, NULL, 0);
597                 html(" : ");
598                 cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
599                 html("</td><td class='form'>");
600                 html("<form method='get' action=''>\n");
601                 add_hidden_formfields(0, 1, ctx->qry.page);
602                 html("<select name='h' onchange='this.form.submit();'>\n");
603                 for_each_branch_ref(print_branch_option, ctx->qry.head);
604                 html("</select> ");
605                 html("<input type='submit' name='' value='switch'/>");
606                 html("</form>");
607         } else
608                 html_txt(ctx->cfg.root_title);
609         html("</td></tr>\n");
610
611         html("<tr><td class='sub'>");
612         if (ctx->repo) {
613                 html_txt(ctx->repo->desc);
614                 html("</td><td class='sub right'>");
615                 html_txt(ctx->repo->owner);
616         } else {
617                 if (ctx->cfg.root_desc)
618                         html_txt(ctx->cfg.root_desc);
619                 else if (ctx->cfg.index_info)
620                         html_include(ctx->cfg.index_info);
621         }
622         html("</td></tr></table>\n");
623
624         html("<table class='tabs'><tr><td>\n");
625         if (ctx->repo) {
626                 cgit_summary_link("summary", NULL, NULL, ctx->qry.head);
627                 cgit_refs_link("refs", NULL, hc(cmd, "refs"), ctx->qry.head,
628                                ctx->qry.sha1, NULL);
629                 cgit_log_link("log", NULL, hc(cmd, "log"), ctx->qry.head,
630                               NULL, NULL, 0, NULL, NULL);
631                 cgit_tree_link("tree", NULL, hc(cmd, "tree"), ctx->qry.head,
632                                ctx->qry.sha1, NULL);
633                 cgit_commit_link("commit", NULL, hc(cmd, "commit"),
634                                  ctx->qry.head, ctx->qry.sha1);
635                 cgit_diff_link("diff", NULL, hc(cmd, "diff"), ctx->qry.head,
636                                ctx->qry.sha1, ctx->qry.sha2, NULL);
637                 if (ctx->repo->readme)
638                         reporevlink("about", "about", NULL,
639                                     hc(cmd, "about"), ctx->qry.head, NULL,
640                                     NULL);
641                 html("</td><td class='form'>");
642                 html("<form class='right' method='get' action='");
643                 if (ctx->cfg.virtual_root)
644                         html_url_path(cgit_fileurl(ctx->qry.repo, "log",
645                                                    ctx->qry.path, NULL));
646                 html("'>\n");
647                 add_hidden_formfields(1, 0, "log");
648                 html("<select name='qt'>\n");
649                 html_option("grep", "log msg", ctx->qry.grep);
650                 html_option("author", "author", ctx->qry.grep);
651                 html_option("committer", "committer", ctx->qry.grep);
652                 html("</select>\n");
653                 html("<input class='txt' type='text' size='10' name='q' value='");
654                 html_attr(ctx->qry.search);
655                 html("'/>\n");
656                 html("<input type='submit' value='search'/>\n");
657                 html("</form>\n");
658         } else {
659                 site_link(NULL, "index", NULL, hc(cmd, "repolist"), NULL, 0);
660                 if (ctx->cfg.root_readme)
661                         site_link("about", "about", NULL, hc(cmd, "about"),
662                                   NULL, 0);
663                 html("</td><td class='form'>");
664                 html("<form method='get' action='");
665                 html_attr(cgit_rooturl());
666                 html("'>\n");
667                 html("<input type='text' name='q' size='10' value='");
668                 html_attr(ctx->qry.search);
669                 html("'/>\n");
670                 html("<input type='submit' value='search'/>\n");
671                 html("</form>");
672         }
673         html("</td></tr></table>\n");
674         html("<div class='content'>");
675 }
676
677 void cgit_print_filemode(unsigned short mode)
678 {
679         if (S_ISDIR(mode))
680                 html("d");
681         else if (S_ISLNK(mode))
682                 html("l");
683         else if (S_ISGITLINK(mode))
684                 html("m");
685         else
686                 html("-");
687         html_fileperm(mode >> 6);
688         html_fileperm(mode >> 3);
689         html_fileperm(mode);
690 }
691
692 void cgit_print_snapshot_links(const char *repo, const char *head,
693                                const char *hex, int snapshots)
694 {
695         const struct cgit_snapshot_format* f;
696         char *filename;
697
698         for (f = cgit_snapshot_formats; f->suffix; f++) {
699                 if (!(snapshots & f->bit))
700                         continue;
701                 filename = fmt("%s-%s%s", cgit_repobasename(repo), hex,
702                                f->suffix);
703                 cgit_snapshot_link(filename, NULL, NULL, (char *)head,
704                                    (char *)hex, filename);
705                 html("<br/>");
706         }
707 }