ui-shared.c

   1 /* ui-shared.c: common web output functions
   2  *
   3  * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10 #include "ui-shared.h"
  11 #include "cmd.h"
  12 #include "html.h"
  13
  14 const char cgit_doctype[] =
  15 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
  16 "  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
  17
  18 static char *http_date(time_t t)
  19 {
  20         static char day[][4] =
  21                 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
  22         static char month[][4] =
  23                 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
  24                  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  25         struct tm *tm = gmtime(&t);
  26         return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
  27                    tm->tm_mday, month[tm->tm_mon], 1900 + tm->tm_year,
  28                    tm->tm_hour, tm->tm_min, tm->tm_sec);
  29 }
  30
  31 void cgit_print_error(const char *fmt, ...)
  32 {
  33         va_list ap;
  34         va_start(ap, fmt);
  35         cgit_vprint_error(fmt, ap);
  36         va_end(ap);
  37 }
  38
  39 void cgit_vprint_error(const char *fmt, va_list ap)
  40 {
  41         va_list cp;
  42         html("<div class='error'>");
  43         va_copy(cp, ap);
  44         html_vtxtf(fmt, cp);
  45         va_end(cp);
  46         html("</div>\n");
  47 }
  48
  49 const char *cgit_httpscheme()
  50 {
  51         if (ctx.env.https && !strcmp(ctx.env.https, "on"))
  52                 return "https://";
  53         else
  54                 return "http://";
  55 }
  56
  57 const char *cgit_hosturl()
  58 {
  59         if (ctx.env.http_host)
  60                 return ctx.env.http_host;
  61         if (!ctx.env.server_name)
  62                 return NULL;
  63         if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
  64                 return ctx.env.server_name;
  65         return fmtalloc("%s:%s", ctx.env.server_name, ctx.env.server_port);
  66 }
  67
  68 const char *cgit_rooturl()
  69 {
  70         if (ctx.cfg.virtual_root)
  71                 return ctx.cfg.virtual_root;
  72         else
  73                 return ctx.cfg.script_name;
  74 }
  75
  76 char *cgit_repourl(const char *reponame)
  77 {
  78         if (ctx.cfg.virtual_root)
  79                 return fmtalloc("%s%s/", ctx.cfg.virtual_root, reponame);
  80         else
  81                 return fmtalloc("?r=%s", reponame);
  82 }
  83
  84 char *cgit_fileurl(const char *reponame, const char *pagename,
  85                    const char *filename, const char *query)
  86 {
  87         struct strbuf sb = STRBUF_INIT;
  88         char *delim;
  89
  90         if (ctx.cfg.virtual_root) {
  91                 strbuf_addf(&sb, "%s%s/%s/%s", ctx.cfg.virtual_root, reponame,
  92                             pagename, (filename ? filename:""));
  93                 delim = "?";
  94         } else {
  95                 strbuf_addf(&sb, "?url=%s/%s/%s", reponame, pagename,
  96                             (filename ? filename : ""));
  97                 delim = "&amp;";
  98         }
  99         if (query)
 100                 strbuf_addf(&sb, "%s%s", delim, query);
 101         return strbuf_detach(&sb, NULL);
 102 }
 103
 104 char *cgit_pageurl(const char *reponame, const char *pagename,
 105                    const char *query)
 106 {
 107         return cgit_fileurl(reponame, pagename, 0, query);
 108 }
 109
 110 const char *cgit_repobasename(const char *reponame)
 111 {
 112         /* I assume we don't need to store more than one repo basename */
 113         static char rvbuf[1024];
 114         int p;
 115         const char *rv;
 116         strncpy(rvbuf, reponame, sizeof(rvbuf));
 117         if (rvbuf[sizeof(rvbuf)-1])
 118                 die("cgit_repobasename: truncated repository name '%s'", reponame);
 119         p = strlen(rvbuf)-1;
 120         /* strip trailing slashes */
 121         while (p && rvbuf[p] == '/') rvbuf[p--] = 0;
 122         /* strip trailing .git */
 123         if (p >= 3 && !prefixcmp(&rvbuf[p-3], ".git")) {
 124                 p -= 3; rvbuf[p--] = 0;
 125         }
 126         /* strip more trailing slashes if any */
 127         while ( p && rvbuf[p] == '/') rvbuf[p--] = 0;
 128         /* find last slash in the remaining string */
 129         rv = strrchr(rvbuf,'/');
 130         if (rv)
 131                 return ++rv;
 132         return rvbuf;
 133 }
 134
 135 static void site_url(const char *page, const char *search, const char *sort, int ofs)
 136 {
 137         char *delim = "?";
 138
 139         if (ctx.cfg.virtual_root)
 140                 html_attr(ctx.cfg.virtual_root);
 141         else
 142                 html_url_path(ctx.cfg.script_name);
 143
 144         if (page) {
 145                 htmlf("?p=%s", page);
 146                 delim = "&amp;";
 147         }
 148         if (search) {
 149                 html(delim);
 150                 html("q=");
 151                 html_attr(search);
 152                 delim = "&amp;";
 153         }
 154         if (sort) {
 155                 html(delim);
 156                 html("s=");
 157                 html_attr(sort);
 158                 delim = "&amp;";
 159         }
 160         if (ofs) {
 161                 html(delim);
 162                 htmlf("ofs=%d", ofs);
 163         }
 164 }
 165
 166 static void site_link(const char *page, const char *name, const char *title,
 167                       const char *class, const char *search, const char *sort, int ofs)
 168 {
 169         html("<a");
 170         if (title) {
 171                 html(" title='");
 172                 html_attr(title);
 173                 html("'");
 174         }
 175         if (class) {
 176                 html(" class='");
 177                 html_attr(class);
 178                 html("'");
 179         }
 180         html(" href='");
 181         site_url(page, search, sort, ofs);
 182         html("'>");
 183         html_txt(name);
 184         html("</a>");
 185 }
 186
 187 void cgit_index_link(const char *name, const char *title, const char *class,
 188                      const char *pattern, const char *sort, int ofs)
 189 {
 190         site_link(NULL, name, title, class, pattern, sort, ofs);
 191 }
 192
 193 static char *repolink(const char *title, const char *class, const char *page,
 194                       const char *head, const char *path)
 195 {
 196         char *delim = "?";
 197
 198         html("<a");
 199         if (title) {
 200                 html(" title='");
 201                 html_attr(title);
 202                 html("'");
 203         }
 204         if (class) {
 205                 html(" class='");
 206                 html_attr(class);
 207                 html("'");
 208         }
 209         html(" href='");
 210         if (ctx.cfg.virtual_root) {
 211                 html_url_path(ctx.cfg.virtual_root);
 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_url_path(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(const char *page, const char *name, const char *title,
 245                         const char *class, const char *head, const char *rev,
 246                         const char *path)
 247 {
 248         char *delim;
 249
 250         delim = repolink(title, class, page, head, path);
 251         if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
 252                 html(delim);
 253                 html("id=");
 254                 html_url_arg(rev);
 255         }
 256         html("'>");
 257         html_txt(name);
 258         html("</a>");
 259 }
 260
 261 void cgit_summary_link(const char *name, const char *title, const char *class,
 262                        const char *head)
 263 {
 264         reporevlink(NULL, name, title, class, head, NULL, NULL);
 265 }
 266
 267 void cgit_tag_link(const char *name, const char *title, const char *class,
 268                    const char *head, const char *rev)
 269 {
 270         reporevlink("tag", name, title, class, head, rev, NULL);
 271 }
 272
 273 void cgit_tree_link(const char *name, const char *title, const char *class,
 274                     const char *head, const char *rev, const char *path)
 275 {
 276         reporevlink("tree", name, title, class, head, rev, path);
 277 }
 278
 279 void cgit_plain_link(const char *name, const char *title, const char *class,
 280                      const char *head, const char *rev, const char *path)
 281 {
 282         reporevlink("plain", name, title, class, head, rev, path);
 283 }
 284
 285 void cgit_log_link(const char *name, const char *title, const char *class,
 286                    const char *head, const char *rev, const char *path,
 287                    int ofs, const char *grep, const char *pattern, int showmsg)
 288 {
 289         char *delim;
 290
 291         delim = repolink(title, class, "log", head, path);
 292         if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 293                 html(delim);
 294                 html("id=");
 295                 html_url_arg(rev);
 296                 delim = "&amp;";
 297         }
 298         if (grep && pattern) {
 299                 html(delim);
 300                 html("qt=");
 301                 html_url_arg(grep);
 302                 delim = "&amp;";
 303                 html(delim);
 304                 html("q=");
 305                 html_url_arg(pattern);
 306         }
 307         if (ofs > 0) {
 308                 html(delim);
 309                 html("ofs=");
 310                 htmlf("%d", ofs);
 311                 delim = "&amp;";
 312         }
 313         if (showmsg) {
 314                 html(delim);
 315                 html("showmsg=1");
 316         }
 317         html("'>");
 318         html_txt(name);
 319         html("</a>");
 320 }
 321
 322 void cgit_commit_link(char *name, const char *title, const char *class,
 323                       const char *head, const char *rev, const char *path,
 324                       int toggle_ssdiff)
 325 {
 326         if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 327                 name[ctx.cfg.max_msg_len] = '\0';
 328                 name[ctx.cfg.max_msg_len - 1] = '.';
 329                 name[ctx.cfg.max_msg_len - 2] = '.';
 330                 name[ctx.cfg.max_msg_len - 3] = '.';
 331         }
 332
 333         char *delim;
 334
 335         delim = repolink(title, class, "commit", head, path);
 336         if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 337                 html(delim);
 338                 html("id=");
 339                 html_url_arg(rev);
 340                 delim = "&amp;";
 341         }
 342         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 343                 html(delim);
 344                 html("ss=1");
 345                 delim = "&amp;";
 346         }
 347         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 348                 html(delim);
 349                 html("context=");
 350                 htmlf("%d", ctx.qry.context);
 351                 delim = "&amp;";
 352         }
 353         if (ctx.qry.ignorews) {
 354                 html(delim);
 355                 html("ignorews=1");
 356                 delim = "&amp;";
 357         }
 358         html("'>");
 359         if (name[0] != '\0')
 360                 html_txt(name);
 361         else
 362                 html_txt("(no commit message)");
 363         html("</a>");
 364 }
 365
 366 void cgit_refs_link(const char *name, const char *title, const char *class,
 367                     const char *head, const char *rev, const char *path)
 368 {
 369         reporevlink("refs", name, title, class, head, rev, path);
 370 }
 371
 372 void cgit_snapshot_link(const char *name, const char *title, const char *class,
 373                         const char *head, const char *rev,
 374                         const char *archivename)
 375 {
 376         reporevlink("snapshot", name, title, class, head, rev, archivename);
 377 }
 378
 379 void cgit_diff_link(const char *name, const char *title, const char *class,
 380                     const char *head, const char *new_rev, const char *old_rev,
 381                     const char *path, int toggle_ssdiff)
 382 {
 383         char *delim;
 384
 385         delim = repolink(title, class, "diff", head, path);
 386         if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 387                 html(delim);
 388                 html("id=");
 389                 html_url_arg(new_rev);
 390                 delim = "&amp;";
 391         }
 392         if (old_rev) {
 393                 html(delim);
 394                 html("id2=");
 395                 html_url_arg(old_rev);
 396                 delim = "&amp;";
 397         }
 398         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 399                 html(delim);
 400                 html("ss=1");
 401                 delim = "&amp;";
 402         }
 403         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 404                 html(delim);
 405                 html("context=");
 406                 htmlf("%d", ctx.qry.context);
 407                 delim = "&amp;";
 408         }
 409         if (ctx.qry.ignorews) {
 410                 html(delim);
 411                 html("ignorews=1");
 412                 delim = "&amp;";
 413         }
 414         html("'>");
 415         html_txt(name);
 416         html("</a>");
 417 }
 418
 419 void cgit_patch_link(const char *name, const char *title, const char *class,
 420                      const char *head, const char *rev, const char *path)
 421 {
 422         reporevlink("patch", name, title, class, head, rev, path);
 423 }
 424
 425 void cgit_stats_link(const char *name, const char *title, const char *class,
 426                      const char *head, const char *path)
 427 {
 428         reporevlink("stats", name, title, class, head, NULL, path);
 429 }
 430
 431 static void cgit_self_link(char *name, const char *title, const char *class,
 432                            struct cgit_context *ctx)
 433 {
 434         if (!strcmp(ctx->qry.page, "repolist"))
 435                 cgit_index_link(name, title, class, ctx->qry.search, ctx->qry.sort,
 436                                 ctx->qry.ofs);
 437         else if (!strcmp(ctx->qry.page, "summary"))
 438                 cgit_summary_link(name, title, class, ctx->qry.head);
 439         else if (!strcmp(ctx->qry.page, "tag"))
 440                 cgit_tag_link(name, title, class, ctx->qry.head,
 441                               ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL);
 442         else if (!strcmp(ctx->qry.page, "tree"))
 443                 cgit_tree_link(name, title, class, ctx->qry.head,
 444                                ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 445                                ctx->qry.path);
 446         else if (!strcmp(ctx->qry.page, "plain"))
 447                 cgit_plain_link(name, title, class, ctx->qry.head,
 448                                 ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 449                                 ctx->qry.path);
 450         else if (!strcmp(ctx->qry.page, "log"))
 451                 cgit_log_link(name, title, class, ctx->qry.head,
 452                               ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 453                               ctx->qry.path, ctx->qry.ofs,
 454                               ctx->qry.grep, ctx->qry.search,
 455                               ctx->qry.showmsg);
 456         else if (!strcmp(ctx->qry.page, "commit"))
 457                 cgit_commit_link(name, title, class, ctx->qry.head,
 458                                  ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 459                                  ctx->qry.path, 0);
 460         else if (!strcmp(ctx->qry.page, "patch"))
 461                 cgit_patch_link(name, title, class, ctx->qry.head,
 462                                 ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 463                                 ctx->qry.path);
 464         else if (!strcmp(ctx->qry.page, "refs"))
 465                 cgit_refs_link(name, title, class, ctx->qry.head,
 466                                ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 467                                ctx->qry.path);
 468         else if (!strcmp(ctx->qry.page, "snapshot"))
 469                 cgit_snapshot_link(name, title, class, ctx->qry.head,
 470                                    ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 471                                    ctx->qry.path);
 472         else if (!strcmp(ctx->qry.page, "diff"))
 473                 cgit_diff_link(name, title, class, ctx->qry.head,
 474                                ctx->qry.sha1, ctx->qry.sha2,
 475                                ctx->qry.path, 0);
 476         else if (!strcmp(ctx->qry.page, "stats"))
 477                 cgit_stats_link(name, title, class, ctx->qry.head,
 478                                 ctx->qry.path);
 479         else {
 480                 /* Don't known how to make link for this page */
 481                 repolink(title, class, ctx->qry.page, ctx->qry.head, ctx->qry.path);
 482                 html("><!-- cgit_self_link() doesn't know how to make link for page '");
 483                 html_txt(ctx->qry.page);
 484                 html("' -->");
 485                 html_txt(name);
 486                 html("</a>");
 487         }
 488 }
 489
 490 void cgit_object_link(struct object *obj)
 491 {
 492         char *page, *shortrev, *fullrev, *name;
 493
 494         fullrev = sha1_to_hex(obj->sha1);
 495         shortrev = xstrdup(fullrev);
 496         shortrev[10] = '\0';
 497         if (obj->type == OBJ_COMMIT) {
 498                 cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 499                                  ctx.qry.head, fullrev, NULL, 0);
 500                 return;
 501         } else if (obj->type == OBJ_TREE)
 502                 page = "tree";
 503         else if (obj->type == OBJ_TAG)
 504                 page = "tag";
 505         else
 506                 page = "blob";
 507         name = fmt("%s %s...", typename(obj->type), shortrev);
 508         reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 509 }
 510
 511 static struct string_list_item *lookup_path(struct string_list *list,
 512                                             const char *path)
 513 {
 514         struct string_list_item *item;
 515
 516         while (path && path[0]) {
 517                 if ((item = string_list_lookup(list, path)))
 518                         return item;
 519                 if (!(path = strchr(path, '/')))
 520                         break;
 521                 path++;
 522         }
 523         return NULL;
 524 }
 525
 526 void cgit_submodule_link(const char *class, char *path, const char *rev)
 527 {
 528         struct string_list *list;
 529         struct string_list_item *item;
 530         char tail, *dir;
 531         size_t len;
 532
 533         len = 0;
 534         tail = 0;
 535         list = &ctx.repo->submodules;
 536         item = lookup_path(list, path);
 537         if (!item) {
 538                 len = strlen(path);
 539                 tail = path[len - 1];
 540                 if (tail == '/') {
 541                         path[len - 1] = 0;
 542                         item = lookup_path(list, path);
 543                 }
 544         }
 545         html("<a ");
 546         if (class)
 547                 htmlf("class='%s' ", class);
 548         html("href='");
 549         if (item) {
 550                 html_attrf(item->util, rev);
 551         } else if (ctx.repo->module_link) {
 552                 dir = strrchr(path, '/');
 553                 if (dir)
 554                         dir++;
 555                 else
 556                         dir = path;
 557                 html_attrf(ctx.repo->module_link, dir, rev);
 558         } else {
 559                 html("#");
 560         }
 561         html("'>");
 562         html_txt(path);
 563         html("</a>");
 564         html_txtf(" @ %.7s", rev);
 565         if (item && tail)
 566                 path[len - 1] = tail;
 567 }
 568
 569 void cgit_print_date(time_t secs, const char *format, int local_time)
 570 {
 571         char buf[64];
 572         struct tm *time;
 573
 574         if (!secs)
 575                 return;
 576         if (local_time)
 577                 time = localtime(&secs);
 578         else
 579                 time = gmtime(&secs);
 580         strftime(buf, sizeof(buf)-1, format, time);
 581         html_txt(buf);
 582 }
 583
 584 void cgit_print_age(time_t t, time_t max_relative, const char *format)
 585 {
 586         time_t now, secs;
 587
 588         if (!t)
 589                 return;
 590         time(&now);
 591         secs = now - t;
 592
 593         if (secs > max_relative && max_relative >= 0) {
 594                 cgit_print_date(t, format, ctx.cfg.local_time);
 595                 return;
 596         }
 597
 598         if (secs < TM_HOUR * 2) {
 599                 htmlf("<span class='age-mins'>%.0f min.</span>",
 600                       secs * 1.0 / TM_MIN);
 601                 return;
 602         }
 603         if (secs < TM_DAY * 2) {
 604                 htmlf("<span class='age-hours'>%.0f hours</span>",
 605                       secs * 1.0 / TM_HOUR);
 606                 return;
 607         }
 608         if (secs < TM_WEEK * 2) {
 609                 htmlf("<span class='age-days'>%.0f days</span>",
 610                       secs * 1.0 / TM_DAY);
 611                 return;
 612         }
 613         if (secs < TM_MONTH * 2) {
 614                 htmlf("<span class='age-weeks'>%.0f weeks</span>",
 615                       secs * 1.0 / TM_WEEK);
 616                 return;
 617         }
 618         if (secs < TM_YEAR * 2) {
 619                 htmlf("<span class='age-months'>%.0f months</span>",
 620                       secs * 1.0 / TM_MONTH);
 621                 return;
 622         }
 623         htmlf("<span class='age-years'>%.0f years</span>",
 624               secs * 1.0 / TM_YEAR);
 625 }
 626
 627 void cgit_print_http_headers(struct cgit_context *ctx)
 628 {
 629         if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
 630                 return;
 631
 632         if (ctx->page.status)
 633                 htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
 634         if (ctx->page.mimetype && ctx->page.charset)
 635                 htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
 636                       ctx->page.charset);
 637         else if (ctx->page.mimetype)
 638                 htmlf("Content-Type: %s\n", ctx->page.mimetype);
 639         if (ctx->page.size)
 640                 htmlf("Content-Length: %zd\n", ctx->page.size);
 641         if (ctx->page.filename)
 642                 htmlf("Content-Disposition: inline; filename=\"%s\"\n",
 643                       ctx->page.filename);
 644         htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
 645         htmlf("Expires: %s\n", http_date(ctx->page.expires));
 646         if (ctx->page.etag)
 647                 htmlf("ETag: \"%s\"\n", ctx->page.etag);
 648         html("\n");
 649         if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
 650                 exit(0);
 651 }
 652
 653 void cgit_print_docstart(struct cgit_context *ctx)
 654 {
 655         if (ctx->cfg.embedded) {
 656                 if (ctx->cfg.header)
 657                         html_include(ctx->cfg.header);
 658                 return;
 659         }
 660
 661         const char *host = cgit_hosturl();
 662         html(cgit_doctype);
 663         html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 664         html("<head>\n");
 665         html("<title>");
 666         html_txt(ctx->page.title);
 667         html("</title>\n");
 668         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 669         if (ctx->cfg.robots && *ctx->cfg.robots)
 670                 htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
 671         html("<link rel='stylesheet' type='text/css' href='");
 672         html_attr(ctx->cfg.css);
 673         html("'/>\n");
 674         if (ctx->cfg.favicon) {
 675                 html("<link rel='shortcut icon' href='");
 676                 html_attr(ctx->cfg.favicon);
 677                 html("'/>\n");
 678         }
 679         if (host && ctx->repo && ctx->qry.head) {
 680                 struct strbuf sb = STRBUF_INIT;
 681                 strbuf_addf(&sb, "h=%s", ctx->qry.head);
 682
 683                 html("<link rel='alternate' title='Atom feed' href='");
 684                 html(cgit_httpscheme());
 685                 html_attr(cgit_hosturl());
 686                 html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.vpath,
 687                                        sb.buf));
 688                 html("' type='application/atom+xml'/>\n");
 689                 strbuf_release(&sb);
 690         }
 691         if (ctx->cfg.head_include)
 692                 html_include(ctx->cfg.head_include);
 693         html("</head>\n");
 694         html("<body>\n");
 695         if (ctx->cfg.header)
 696                 html_include(ctx->cfg.header);
 697 }
 698
 699 void cgit_print_docend()
 700 {
 701         html("</div> <!-- class=content -->\n");
 702         if (ctx.cfg.embedded) {
 703                 html("</div> <!-- id=cgit -->\n");
 704                 if (ctx.cfg.footer)
 705                         html_include(ctx.cfg.footer);
 706                 return;
 707         }
 708         if (ctx.cfg.footer)
 709                 html_include(ctx.cfg.footer);
 710         else {
 711                 htmlf("<div class='footer'>generated  by cgit %s at ",
 712                         cgit_version);
 713                 cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 714                 html("</div>\n");
 715         }
 716         html("</div> <!-- id=cgit -->\n");
 717         html("</body>\n</html>\n");
 718 }
 719
 720 static int print_branch_option(const char *refname, const unsigned char *sha1,
 721                                int flags, void *cb_data)
 722 {
 723         char *name = (char *)refname;
 724         html_option(name, name, ctx.qry.head);
 725         return 0;
 726 }
 727
 728 void cgit_add_hidden_formfields(int incl_head, int incl_search,
 729                                 const char *page)
 730 {
 731         if (!ctx.cfg.virtual_root) {
 732                 struct strbuf url = STRBUF_INIT;
 733
 734                 strbuf_addf(&url, "%s/%s", ctx.qry.repo, page);
 735                 if (ctx.qry.vpath)
 736                         strbuf_addf(&url, "/%s", ctx.qry.vpath);
 737                 html_hidden("url", url.buf);
 738                 strbuf_release(&url);
 739         }
 740
 741         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 742             strcmp(ctx.qry.head, ctx.repo->defbranch))
 743                 html_hidden("h", ctx.qry.head);
 744
 745         if (ctx.qry.sha1)
 746                 html_hidden("id", ctx.qry.sha1);
 747         if (ctx.qry.sha2)
 748                 html_hidden("id2", ctx.qry.sha2);
 749         if (ctx.qry.showmsg)
 750                 html_hidden("showmsg", "1");
 751
 752         if (incl_search) {
 753                 if (ctx.qry.grep)
 754                         html_hidden("qt", ctx.qry.grep);
 755                 if (ctx.qry.search)
 756                         html_hidden("q", ctx.qry.search);
 757         }
 758 }
 759
 760 static const char *hc(struct cgit_context *ctx, const char *page)
 761 {
 762         return strcmp(ctx->qry.page, page) ? NULL : "active";
 763 }
 764
 765 static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
 766 {
 767         char *old_path = ctx->qry.path;
 768         char *p = path, *q, *end = path + strlen(path);
 769
 770         ctx->qry.path = NULL;
 771         cgit_self_link("root", NULL, NULL, ctx);
 772         ctx->qry.path = p = path;
 773         while (p < end) {
 774                 if (!(q = strchr(p, '/')))
 775                         q = end;
 776                 *q = '\0';
 777                 html_txt("/");
 778                 cgit_self_link(p, NULL, NULL, ctx);
 779                 if (q < end)
 780                         *q = '/';
 781                 p = q + 1;
 782         }
 783         ctx->qry.path = old_path;
 784 }
 785
 786 static void print_header(struct cgit_context *ctx)
 787 {
 788         char *logo = NULL, *logo_link = NULL;
 789
 790         html("<table id='header'>\n");
 791         html("<tr>\n");
 792
 793         if (ctx->repo && ctx->repo->logo && *ctx->repo->logo)
 794                 logo = ctx->repo->logo;
 795         else
 796                 logo = ctx->cfg.logo;
 797         if (ctx->repo && ctx->repo->logo_link && *ctx->repo->logo_link)
 798                 logo_link = ctx->repo->logo_link;
 799         else
 800                 logo_link = ctx->cfg.logo_link;
 801         if (logo && *logo) {
 802                 html("<td class='logo' rowspan='2'><a href='");
 803                 if (logo_link && *logo_link)
 804                         html_attr(logo_link);
 805                 else
 806                         html_attr(cgit_rooturl());
 807                 html("'><img src='");
 808                 html_attr(logo);
 809                 html("' alt='cgit logo'/></a></td>\n");
 810         }
 811
 812         html("<td class='main'>");
 813         if (ctx->repo) {
 814                 cgit_index_link("index", NULL, NULL, NULL, NULL, 0);
 815                 html(" : ");
 816                 cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
 817                 html("</td><td class='form'>");
 818                 html("<form method='get' action=''>\n");
 819                 cgit_add_hidden_formfields(0, 1, ctx->qry.page);
 820                 html("<select name='h' onchange='this.form.submit();'>\n");
 821                 for_each_branch_ref(print_branch_option, ctx->qry.head);
 822                 html("</select> ");
 823                 html("<input type='submit' name='' value='switch'/>");
 824                 html("</form>");
 825         } else
 826                 html_txt(ctx->cfg.root_title);
 827         html("</td></tr>\n");
 828
 829         html("<tr><td class='sub'>");
 830         if (ctx->repo) {
 831                 html_txt(ctx->repo->desc);
 832                 html("</td><td class='sub right'>");
 833                 html_txt(ctx->repo->owner);
 834         } else {
 835                 if (ctx->cfg.root_desc)
 836                         html_txt(ctx->cfg.root_desc);
 837                 else if (ctx->cfg.index_info)
 838                         html_include(ctx->cfg.index_info);
 839         }
 840         html("</td></tr></table>\n");
 841 }
 842
 843 void cgit_print_pageheader(struct cgit_context *ctx)
 844 {
 845         html("<div id='cgit'>");
 846         if (!ctx->cfg.noheader)
 847                 print_header(ctx);
 848
 849         html("<table class='tabs'><tr><td>\n");
 850         if (ctx->repo) {
 851                 cgit_summary_link("summary", NULL, hc(ctx, "summary"),
 852                                   ctx->qry.head);
 853                 cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
 854                                ctx->qry.sha1, NULL);
 855                 cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
 856                               NULL, ctx->qry.vpath, 0, NULL, NULL,
 857                               ctx->qry.showmsg);
 858                 cgit_tree_link("tree", NULL, hc(ctx, "tree"), ctx->qry.head,
 859                                ctx->qry.sha1, ctx->qry.vpath);
 860                 cgit_commit_link("commit", NULL, hc(ctx, "commit"),
 861                                  ctx->qry.head, ctx->qry.sha1, ctx->qry.vpath, 0);
 862                 cgit_diff_link("diff", NULL, hc(ctx, "diff"), ctx->qry.head,
 863                                ctx->qry.sha1, ctx->qry.sha2, ctx->qry.vpath, 0);
 864                 if (ctx->repo->max_stats)
 865                         cgit_stats_link("stats", NULL, hc(ctx, "stats"),
 866                                         ctx->qry.head, ctx->qry.vpath);
 867                 if (ctx->repo->readme.nr)
 868                         reporevlink("about", "about", NULL,
 869                                     hc(ctx, "about"), ctx->qry.head, NULL,
 870                                     NULL);
 871                 html("</td><td class='form'>");
 872                 html("<form class='right' method='get' action='");
 873                 if (ctx->cfg.virtual_root)
 874                         html_url_path(cgit_fileurl(ctx->qry.repo, "log",
 875                                                    ctx->qry.vpath, NULL));
 876                 html("'>\n");
 877                 cgit_add_hidden_formfields(1, 0, "log");
 878                 html("<select name='qt'>\n");
 879                 html_option("grep", "log msg", ctx->qry.grep);
 880                 html_option("author", "author", ctx->qry.grep);
 881                 html_option("committer", "committer", ctx->qry.grep);
 882                 html_option("range", "range", ctx->qry.grep);
 883                 html("</select>\n");
 884                 html("<input class='txt' type='text' size='10' name='q' value='");
 885                 html_attr(ctx->qry.search);
 886                 html("'/>\n");
 887                 html("<input type='submit' value='search'/>\n");
 888                 html("</form>\n");
 889         } else {
 890                 site_link(NULL, "index", NULL, hc(ctx, "repolist"), NULL, NULL, 0);
 891                 if (ctx->cfg.root_readme)
 892                         site_link("about", "about", NULL, hc(ctx, "about"),
 893                                   NULL, NULL, 0);
 894                 html("</td><td class='form'>");
 895                 html("<form method='get' action='");
 896                 html_attr(cgit_rooturl());
 897                 html("'>\n");
 898                 html("<input type='text' name='q' size='10' value='");
 899                 html_attr(ctx->qry.search);
 900                 html("'/>\n");
 901                 html("<input type='submit' value='search'/>\n");
 902                 html("</form>");
 903         }
 904         html("</td></tr></table>\n");
 905         if (ctx->qry.vpath) {
 906                 html("<div class='path'>");
 907                 html("path: ");
 908                 cgit_print_path_crumbs(ctx, ctx->qry.vpath);
 909                 html("</div>");
 910         }
 911         html("<div class='content'>");
 912 }
 913
 914 void cgit_print_filemode(unsigned short mode)
 915 {
 916         if (S_ISDIR(mode))
 917                 html("d");
 918         else if (S_ISLNK(mode))
 919                 html("l");
 920         else if (S_ISGITLINK(mode))
 921                 html("m");
 922         else
 923                 html("-");
 924         html_fileperm(mode >> 6);
 925         html_fileperm(mode >> 3);
 926         html_fileperm(mode);
 927 }
 928
 929 void cgit_print_snapshot_links(const char *repo, const char *head,
 930                                const char *hex, int snapshots)
 931 {
 932         const struct cgit_snapshot_format* f;
 933         struct strbuf filename = STRBUF_INIT;
 934         size_t prefixlen;
 935         unsigned char sha1[20];
 936
 937         if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
 938             (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
 939                 hex++;
 940         strbuf_addf(&filename, "%s-%s", cgit_repobasename(repo), hex);
 941         prefixlen = filename.len;
 942         for (f = cgit_snapshot_formats; f->suffix; f++) {
 943                 if (!(snapshots & f->bit))
 944                         continue;
 945                 strbuf_setlen(&filename, prefixlen);
 946                 strbuf_addstr(&filename, f->suffix);
 947                 cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL,
 948                                    filename.buf);
 949                 html("<br/>");
 950         }
 951         strbuf_release(&filename);
 952 }