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 "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 *msg)
  32 {
  33         html("<div class='error'>");
  34         html_txt(msg);
  35         html("</div>\n");
  36 }
  37
  38 const char *cgit_httpscheme()
  39 {
  40         if (ctx.env.https && !strcmp(ctx.env.https, "on"))
  41                 return "https://";
  42         else
  43                 return "http://";
  44 }
  45
  46 const char *cgit_hosturl()
  47 {
  48         if (ctx.env.http_host)
  49                 return ctx.env.http_host;
  50         if (!ctx.env.server_name)
  51                 return NULL;
  52         if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
  53                 return ctx.env.server_name;
  54         return xstrdup(fmt("%s:%s", ctx.env.server_name, ctx.env.server_port));
  55 }
  56
  57 const 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 = "&amp;";
  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 static void site_url(const char *page, const char *search, const char *sort, int ofs)
 126 {
 127         char *delim = "?";
 128
 129         if (ctx.cfg.virtual_root) {
 130                 html_attr(ctx.cfg.virtual_root);
 131                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
 132                         html("/");
 133         } else
 134                 html(ctx.cfg.script_name);
 135
 136         if (page) {
 137                 htmlf("?p=%s", page);
 138                 delim = "&amp;";
 139         }
 140         if (search) {
 141                 html(delim);
 142                 html("q=");
 143                 html_attr(search);
 144                 delim = "&amp;";
 145         }
 146         if (sort) {
 147                 html(delim);
 148                 html("s=");
 149                 html_attr(sort);
 150                 delim = "&amp;";
 151         }
 152         if (ofs) {
 153                 html(delim);
 154                 htmlf("ofs=%d", ofs);
 155         }
 156 }
 157
 158 static void site_link(const char *page, const char *name, const char *title,
 159                       const char *class, const char *search, const char *sort, int ofs)
 160 {
 161         html("<a");
 162         if (title) {
 163                 html(" title='");
 164                 html_attr(title);
 165                 html("'");
 166         }
 167         if (class) {
 168                 html(" class='");
 169                 html_attr(class);
 170                 html("'");
 171         }
 172         html(" href='");
 173         site_url(page, search, sort, ofs);
 174         html("'>");
 175         html_txt(name);
 176         html("</a>");
 177 }
 178
 179 void cgit_index_link(const char *name, const char *title, const char *class,
 180                      const char *pattern, const char *sort, int ofs)
 181 {
 182         site_link(NULL, name, title, class, pattern, sort, ofs);
 183 }
 184
 185 static char *repolink(const char *title, const char *class, const char *page,
 186                       const char *head, const char *path)
 187 {
 188         char *delim = "?";
 189
 190         html("<a");
 191         if (title) {
 192                 html(" title='");
 193                 html_attr(title);
 194                 html("'");
 195         }
 196         if (class) {
 197                 html(" class='");
 198                 html_attr(class);
 199                 html("'");
 200         }
 201         html(" href='");
 202         if (ctx.cfg.virtual_root) {
 203                 html_url_path(ctx.cfg.virtual_root);
 204                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
 205                         html("/");
 206                 html_url_path(ctx.repo->url);
 207                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 208                         html("/");
 209                 if (page) {
 210                         html_url_path(page);
 211                         html("/");
 212                         if (path)
 213                                 html_url_path(path);
 214                 }
 215         } else {
 216                 html(ctx.cfg.script_name);
 217                 html("?url=");
 218                 html_url_arg(ctx.repo->url);
 219                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 220                         html("/");
 221                 if (page) {
 222                         html_url_arg(page);
 223                         html("/");
 224                         if (path)
 225                                 html_url_arg(path);
 226                 }
 227                 delim = "&amp;";
 228         }
 229         if (head && strcmp(head, ctx.repo->defbranch)) {
 230                 html(delim);
 231                 html("h=");
 232                 html_url_arg(head);
 233                 delim = "&amp;";
 234         }
 235         return fmt("%s", delim);
 236 }
 237
 238 static void reporevlink(const char *page, const char *name, const char *title,
 239                         const char *class, const char *head, const char *rev,
 240                         const char *path)
 241 {
 242         char *delim;
 243
 244         delim = repolink(title, class, page, head, path);
 245         if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
 246                 html(delim);
 247                 html("id=");
 248                 html_url_arg(rev);
 249         }
 250         html("'>");
 251         html_txt(name);
 252         html("</a>");
 253 }
 254
 255 void cgit_summary_link(const char *name, const char *title, const char *class,
 256                        const char *head)
 257 {
 258         reporevlink(NULL, name, title, class, head, NULL, NULL);
 259 }
 260
 261 void cgit_tag_link(const char *name, const char *title, const char *class,
 262                    const char *head, const char *rev)
 263 {
 264         reporevlink("tag", name, title, class, head, rev, NULL);
 265 }
 266
 267 void cgit_tree_link(const char *name, const char *title, const char *class,
 268                     const char *head, const char *rev, const char *path)
 269 {
 270         reporevlink("tree", name, title, class, head, rev, path);
 271 }
 272
 273 void cgit_plain_link(const char *name, const char *title, const char *class,
 274                      const char *head, const char *rev, const char *path)
 275 {
 276         reporevlink("plain", name, title, class, head, rev, path);
 277 }
 278
 279 void cgit_log_link(const char *name, const char *title, const char *class,
 280                    const char *head, const char *rev, const char *path,
 281                    int ofs, const char *grep, const char *pattern, int showmsg)
 282 {
 283         char *delim;
 284
 285         delim = repolink(title, class, "log", head, path);
 286         if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 287                 html(delim);
 288                 html("id=");
 289                 html_url_arg(rev);
 290                 delim = "&amp;";
 291         }
 292         if (grep && pattern) {
 293                 html(delim);
 294                 html("qt=");
 295                 html_url_arg(grep);
 296                 delim = "&amp;";
 297                 html(delim);
 298                 html("q=");
 299                 html_url_arg(pattern);
 300         }
 301         if (ofs > 0) {
 302                 html(delim);
 303                 html("ofs=");
 304                 htmlf("%d", ofs);
 305                 delim = "&amp;";
 306         }
 307         if (showmsg) {
 308                 html(delim);
 309                 html("showmsg=1");
 310         }
 311         html("'>");
 312         html_txt(name);
 313         html("</a>");
 314 }
 315
 316 void cgit_commit_link(char *name, const char *title, const char *class,
 317                       const char *head, const char *rev, const char *path,
 318                       int toggle_ssdiff)
 319 {
 320         if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 321                 name[ctx.cfg.max_msg_len] = '\0';
 322                 name[ctx.cfg.max_msg_len - 1] = '.';
 323                 name[ctx.cfg.max_msg_len - 2] = '.';
 324                 name[ctx.cfg.max_msg_len - 3] = '.';
 325         }
 326
 327         char *delim;
 328
 329         delim = repolink(title, class, "commit", head, path);
 330         if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 331                 html(delim);
 332                 html("id=");
 333                 html_url_arg(rev);
 334                 delim = "&amp;";
 335         }
 336         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 337                 html(delim);
 338                 html("ss=1");
 339                 delim = "&amp;";
 340         }
 341         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 342                 html(delim);
 343                 html("context=");
 344                 htmlf("%d", ctx.qry.context);
 345                 delim = "&amp;";
 346         }
 347         if (ctx.qry.ignorews) {
 348                 html(delim);
 349                 html("ignorews=1");
 350                 delim = "&amp;";
 351         }
 352         html("'>");
 353         if (name[0] != '\0')
 354                 html_txt(name);
 355         else
 356                 html_txt("(no commit message)");
 357         html("</a>");
 358 }
 359
 360 void cgit_refs_link(const char *name, const char *title, const char *class,
 361                     const char *head, const char *rev, const char *path)
 362 {
 363         reporevlink("refs", name, title, class, head, rev, path);
 364 }
 365
 366 void cgit_snapshot_link(const char *name, const char *title, const char *class,
 367                         const char *head, const char *rev,
 368                         const char *archivename)
 369 {
 370         reporevlink("snapshot", name, title, class, head, rev, archivename);
 371 }
 372
 373 void cgit_diff_link(const char *name, const char *title, const char *class,
 374                     const char *head, const char *new_rev, const char *old_rev,
 375                     const char *path, int toggle_ssdiff)
 376 {
 377         char *delim;
 378
 379         delim = repolink(title, class, "diff", head, path);
 380         if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 381                 html(delim);
 382                 html("id=");
 383                 html_url_arg(new_rev);
 384                 delim = "&amp;";
 385         }
 386         if (old_rev) {
 387                 html(delim);
 388                 html("id2=");
 389                 html_url_arg(old_rev);
 390                 delim = "&amp;";
 391         }
 392         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 393                 html(delim);
 394                 html("ss=1");
 395                 delim = "&amp;";
 396         }
 397         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 398                 html(delim);
 399                 html("context=");
 400                 htmlf("%d", ctx.qry.context);
 401                 delim = "&amp;";
 402         }
 403         if (ctx.qry.ignorews) {
 404                 html(delim);
 405                 html("ignorews=1");
 406                 delim = "&amp;";
 407         }
 408         html("'>");
 409         html_txt(name);
 410         html("</a>");
 411 }
 412
 413 void cgit_patch_link(const char *name, const char *title, const char *class,
 414                      const char *head, const char *rev, const char *path)
 415 {
 416         reporevlink("patch", name, title, class, head, rev, path);
 417 }
 418
 419 void cgit_stats_link(const char *name, const char *title, const char *class,
 420                      const char *head, const char *path)
 421 {
 422         reporevlink("stats", name, title, class, head, NULL, path);
 423 }
 424
 425 static void cgit_self_link(char *name, const char *title, const char *class,
 426                            struct cgit_context *ctx)
 427 {
 428         if (!strcmp(ctx->qry.page, "repolist"))
 429                 cgit_index_link(name, title, class, ctx->qry.search, ctx->qry.sort,
 430                                 ctx->qry.ofs);
 431         else if (!strcmp(ctx->qry.page, "summary"))
 432                 cgit_summary_link(name, title, class, ctx->qry.head);
 433         else if (!strcmp(ctx->qry.page, "tag"))
 434                 cgit_tag_link(name, title, class, ctx->qry.head,
 435                               ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL);
 436         else if (!strcmp(ctx->qry.page, "tree"))
 437                 cgit_tree_link(name, title, class, ctx->qry.head,
 438                                ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 439                                ctx->qry.path);
 440         else if (!strcmp(ctx->qry.page, "plain"))
 441                 cgit_plain_link(name, title, class, ctx->qry.head,
 442                                 ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 443                                 ctx->qry.path);
 444         else if (!strcmp(ctx->qry.page, "log"))
 445                 cgit_log_link(name, title, class, ctx->qry.head,
 446                               ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 447                               ctx->qry.path, ctx->qry.ofs,
 448                               ctx->qry.grep, ctx->qry.search,
 449                               ctx->qry.showmsg);
 450         else if (!strcmp(ctx->qry.page, "commit"))
 451                 cgit_commit_link(name, title, class, ctx->qry.head,
 452                                  ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 453                                  ctx->qry.path, 0);
 454         else if (!strcmp(ctx->qry.page, "patch"))
 455                 cgit_patch_link(name, title, class, ctx->qry.head,
 456                                 ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 457                                 ctx->qry.path);
 458         else if (!strcmp(ctx->qry.page, "refs"))
 459                 cgit_refs_link(name, title, class, ctx->qry.head,
 460                                ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 461                                ctx->qry.path);
 462         else if (!strcmp(ctx->qry.page, "snapshot"))
 463                 cgit_snapshot_link(name, title, class, ctx->qry.head,
 464                                    ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 465                                    ctx->qry.path);
 466         else if (!strcmp(ctx->qry.page, "diff"))
 467                 cgit_diff_link(name, title, class, ctx->qry.head,
 468                                ctx->qry.sha1, ctx->qry.sha2,
 469                                ctx->qry.path, 0);
 470         else if (!strcmp(ctx->qry.page, "stats"))
 471                 cgit_stats_link(name, title, class, ctx->qry.head,
 472                                 ctx->qry.path);
 473         else {
 474                 /* Don't known how to make link for this page */
 475                 repolink(title, class, ctx->qry.page, ctx->qry.head, ctx->qry.path);
 476                 html("><!-- cgit_self_link() doesn't know how to make link for page '");
 477                 html_txt(ctx->qry.page);
 478                 html("' -->");
 479                 html_txt(name);
 480                 html("</a>");
 481         }
 482 }
 483
 484 void cgit_object_link(struct object *obj)
 485 {
 486         char *page, *shortrev, *fullrev, *name;
 487
 488         fullrev = sha1_to_hex(obj->sha1);
 489         shortrev = xstrdup(fullrev);
 490         shortrev[10] = '\0';
 491         if (obj->type == OBJ_COMMIT) {
 492                 cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 493                                  ctx.qry.head, fullrev, NULL, 0);
 494                 return;
 495         } else if (obj->type == OBJ_TREE)
 496                 page = "tree";
 497         else if (obj->type == OBJ_TAG)
 498                 page = "tag";
 499         else
 500                 page = "blob";
 501         name = fmt("%s %s...", typename(obj->type), shortrev);
 502         reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 503 }
 504
 505 static struct string_list_item *lookup_path(struct string_list *list,
 506                                             const char *path)
 507 {
 508         struct string_list_item *item;
 509
 510         while (path && path[0]) {
 511                 if ((item = string_list_lookup(list, path)))
 512                         return item;
 513                 if (!(path = strchr(path, '/')))
 514                         break;
 515                 path++;
 516         }
 517         return NULL;
 518 }
 519
 520 void cgit_submodule_link(const char *class, char *path, const char *rev)
 521 {
 522         struct string_list *list;
 523         struct string_list_item *item;
 524         char tail, *dir;
 525         size_t len;
 526
 527         len = 0;
 528         tail = 0;
 529         list = &ctx.repo->submodules;
 530         item = lookup_path(list, path);
 531         if (!item) {
 532                 len = strlen(path);
 533                 tail = path[len - 1];
 534                 if (tail == '/') {
 535                         path[len - 1] = 0;
 536                         item = lookup_path(list, path);
 537                 }
 538         }
 539         html("<a ");
 540         if (class)
 541                 htmlf("class='%s' ", class);
 542         html("href='");
 543         if (item) {
 544                 html_attr(fmt(item->util, rev));
 545         } else if (ctx.repo->module_link) {
 546                 dir = strrchr(path, '/');
 547                 if (dir)
 548                         dir++;
 549                 else
 550                         dir = path;
 551                 html_attr(fmt(ctx.repo->module_link, dir, rev));
 552         } else {
 553                 html("#");
 554         }
 555         html("'>");
 556         html_txt(path);
 557         html("</a>");
 558         html_txt(fmt(" @ %.7s", rev));
 559         if (item && tail)
 560                 path[len - 1] = tail;
 561 }
 562
 563 void cgit_print_date(time_t secs, const char *format, int local_time)
 564 {
 565         char buf[64];
 566         struct tm *time;
 567
 568         if (!secs)
 569                 return;
 570         if (local_time)
 571                 time = localtime(&secs);
 572         else
 573                 time = gmtime(&secs);
 574         strftime(buf, sizeof(buf)-1, format, time);
 575         html_txt(buf);
 576 }
 577
 578 void cgit_print_age(time_t t, time_t max_relative, const char *format)
 579 {
 580         time_t now, secs;
 581
 582         if (!t)
 583                 return;
 584         time(&now);
 585         secs = now - t;
 586
 587         if (secs > max_relative && max_relative >= 0) {
 588                 cgit_print_date(t, format, ctx.cfg.local_time);
 589                 return;
 590         }
 591
 592         if (secs < TM_HOUR * 2) {
 593                 htmlf("<span class='age-mins'>%.0f min.</span>",
 594                       secs * 1.0 / TM_MIN);
 595                 return;
 596         }
 597         if (secs < TM_DAY * 2) {
 598                 htmlf("<span class='age-hours'>%.0f hours</span>",
 599                       secs * 1.0 / TM_HOUR);
 600                 return;
 601         }
 602         if (secs < TM_WEEK * 2) {
 603                 htmlf("<span class='age-days'>%.0f days</span>",
 604                       secs * 1.0 / TM_DAY);
 605                 return;
 606         }
 607         if (secs < TM_MONTH * 2) {
 608                 htmlf("<span class='age-weeks'>%.0f weeks</span>",
 609                       secs * 1.0 / TM_WEEK);
 610                 return;
 611         }
 612         if (secs < TM_YEAR * 2) {
 613                 htmlf("<span class='age-months'>%.0f months</span>",
 614                       secs * 1.0 / TM_MONTH);
 615                 return;
 616         }
 617         htmlf("<span class='age-years'>%.0f years</span>",
 618               secs * 1.0 / TM_YEAR);
 619 }
 620
 621 void cgit_print_http_headers(struct cgit_context *ctx)
 622 {
 623         if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
 624                 return;
 625
 626         if (ctx->page.status)
 627                 htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
 628         if (ctx->page.mimetype && ctx->page.charset)
 629                 htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
 630                       ctx->page.charset);
 631         else if (ctx->page.mimetype)
 632                 htmlf("Content-Type: %s\n", ctx->page.mimetype);
 633         if (ctx->page.size)
 634                 htmlf("Content-Length: %zd\n", ctx->page.size);
 635         if (ctx->page.filename)
 636                 htmlf("Content-Disposition: inline; filename=\"%s\"\n",
 637                       ctx->page.filename);
 638         htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
 639         htmlf("Expires: %s\n", http_date(ctx->page.expires));
 640         if (ctx->page.etag)
 641                 htmlf("ETag: \"%s\"\n", ctx->page.etag);
 642         html("\n");
 643         if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
 644                 exit(0);
 645 }
 646
 647 void cgit_print_docstart(struct cgit_context *ctx)
 648 {
 649         if (ctx->cfg.embedded) {
 650                 if (ctx->cfg.header)
 651                         html_include(ctx->cfg.header);
 652                 return;
 653         }
 654
 655         const char *host = cgit_hosturl();
 656         html(cgit_doctype);
 657         html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 658         html("<head>\n");
 659         html("<title>");
 660         html_txt(ctx->page.title);
 661         html("</title>\n");
 662         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 663         if (ctx->cfg.robots && *ctx->cfg.robots)
 664                 htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
 665         html("<link rel='stylesheet' type='text/css' href='");
 666         html_attr(ctx->cfg.css);
 667         html("'/>\n");
 668         if (ctx->cfg.favicon) {
 669                 html("<link rel='shortcut icon' href='");
 670                 html_attr(ctx->cfg.favicon);
 671                 html("'/>\n");
 672         }
 673         if (host && ctx->repo && ctx->qry.head) {
 674                 html("<link rel='alternate' title='Atom feed' href='");
 675                 html(cgit_httpscheme());
 676                 html_attr(cgit_hosturl());
 677                 html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.vpath,
 678                                        fmt("h=%s", ctx->qry.head)));
 679                 html("' type='application/atom+xml'/>\n");
 680         }
 681         if (ctx->cfg.head_include)
 682                 html_include(ctx->cfg.head_include);
 683         html("</head>\n");
 684         html("<body>\n");
 685         if (ctx->cfg.header)
 686                 html_include(ctx->cfg.header);
 687 }
 688
 689 void cgit_print_docend()
 690 {
 691         html("</div> <!-- class=content -->\n");
 692         if (ctx.cfg.embedded) {
 693                 html("</div> <!-- id=cgit -->\n");
 694                 if (ctx.cfg.footer)
 695                         html_include(ctx.cfg.footer);
 696                 return;
 697         }
 698         if (ctx.cfg.footer)
 699                 html_include(ctx.cfg.footer);
 700         else {
 701                 htmlf("<div class='footer'>generated  by cgit %s at ",
 702                         cgit_version);
 703                 cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 704                 html("</div>\n");
 705         }
 706         html("</div> <!-- id=cgit -->\n");
 707         html("</body>\n</html>\n");
 708 }
 709
 710 static int print_branch_option(const char *refname, const unsigned char *sha1,
 711                                int flags, void *cb_data)
 712 {
 713         char *name = (char *)refname;
 714         html_option(name, name, ctx.qry.head);
 715         return 0;
 716 }
 717
 718 void cgit_add_hidden_formfields(int incl_head, int incl_search,
 719                                 const char *page)
 720 {
 721         char *url;
 722
 723         if (!ctx.cfg.virtual_root) {
 724                 url = fmt("%s/%s", ctx.qry.repo, page);
 725                 if (ctx.qry.vpath)
 726                         url = fmt("%s/%s", url, ctx.qry.vpath);
 727                 html_hidden("url", url);
 728         }
 729
 730         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 731             strcmp(ctx.qry.head, ctx.repo->defbranch))
 732                 html_hidden("h", ctx.qry.head);
 733
 734         if (ctx.qry.sha1)
 735                 html_hidden("id", ctx.qry.sha1);
 736         if (ctx.qry.sha2)
 737                 html_hidden("id2", ctx.qry.sha2);
 738         if (ctx.qry.showmsg)
 739                 html_hidden("showmsg", "1");
 740
 741         if (incl_search) {
 742                 if (ctx.qry.grep)
 743                         html_hidden("qt", ctx.qry.grep);
 744                 if (ctx.qry.search)
 745                         html_hidden("q", ctx.qry.search);
 746         }
 747 }
 748
 749 static const char *hc(struct cgit_context *ctx, const char *page)
 750 {
 751         return strcmp(ctx->qry.page, page) ? NULL : "active";
 752 }
 753
 754 static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
 755 {
 756         char *old_path = ctx->qry.path;
 757         char *p = path, *q, *end = path + strlen(path);
 758
 759         ctx->qry.path = NULL;
 760         cgit_self_link("root", NULL, NULL, ctx);
 761         ctx->qry.path = p = path;
 762         while (p < end) {
 763                 if (!(q = strchr(p, '/')))
 764                         q = end;
 765                 *q = '\0';
 766                 html_txt("/");
 767                 cgit_self_link(p, NULL, NULL, ctx);
 768                 if (q < end)
 769                         *q = '/';
 770                 p = q + 1;
 771         }
 772         ctx->qry.path = old_path;
 773 }
 774
 775 static void print_header(struct cgit_context *ctx)
 776 {
 777         char *logo = NULL, *logo_link = NULL;
 778
 779         html("<table id='header'>\n");
 780         html("<tr>\n");
 781
 782         if (ctx->repo && ctx->repo->logo && *ctx->repo->logo)
 783                 logo = ctx->repo->logo;
 784         else
 785                 logo = ctx->cfg.logo;
 786         if (ctx->repo && ctx->repo->logo_link && *ctx->repo->logo_link)
 787                 logo_link = ctx->repo->logo_link;
 788         else
 789                 logo_link = ctx->cfg.logo_link;
 790         if (logo && *logo) {
 791                 html("<td class='logo' rowspan='2'><a href='");
 792                 if (logo_link && *logo_link)
 793                         html_attr(logo_link);
 794                 else
 795                         html_attr(cgit_rooturl());
 796                 html("'><img src='");
 797                 html_attr(logo);
 798                 html("' alt='cgit logo'/></a></td>\n");
 799         }
 800
 801         html("<td class='main'>");
 802         if (ctx->repo) {
 803                 cgit_index_link("index", NULL, NULL, NULL, NULL, 0);
 804                 html(" : ");
 805                 cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
 806                 html("</td><td class='form'>");
 807                 html("<form method='get' action=''>\n");
 808                 cgit_add_hidden_formfields(0, 1, ctx->qry.page);
 809                 html("<select name='h' onchange='this.form.submit();'>\n");
 810                 for_each_branch_ref(print_branch_option, ctx->qry.head);
 811                 html("</select> ");
 812                 html("<input type='submit' name='' value='switch'/>");
 813                 html("</form>");
 814         } else
 815                 html_txt(ctx->cfg.root_title);
 816         html("</td></tr>\n");
 817
 818         html("<tr><td class='sub'>");
 819         if (ctx->repo) {
 820                 html_txt(ctx->repo->desc);
 821                 html("</td><td class='sub right'>");
 822                 html_txt(ctx->repo->owner);
 823         } else {
 824                 if (ctx->cfg.root_desc)
 825                         html_txt(ctx->cfg.root_desc);
 826                 else if (ctx->cfg.index_info)
 827                         html_include(ctx->cfg.index_info);
 828         }
 829         html("</td></tr></table>\n");
 830 }
 831
 832 void cgit_print_pageheader(struct cgit_context *ctx)
 833 {
 834         html("<div id='cgit'>");
 835         if (!ctx->cfg.noheader)
 836                 print_header(ctx);
 837
 838         html("<table class='tabs'><tr><td>\n");
 839         if (ctx->repo) {
 840                 cgit_summary_link("summary", NULL, hc(ctx, "summary"),
 841                                   ctx->qry.head);
 842                 cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
 843                                ctx->qry.sha1, NULL);
 844                 cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
 845                               NULL, ctx->qry.vpath, 0, NULL, NULL,
 846                               ctx->qry.showmsg);
 847                 cgit_tree_link("tree", NULL, hc(ctx, "tree"), ctx->qry.head,
 848                                ctx->qry.sha1, ctx->qry.vpath);
 849                 cgit_commit_link("commit", NULL, hc(ctx, "commit"),
 850                                  ctx->qry.head, ctx->qry.sha1, ctx->qry.vpath, 0);
 851                 cgit_diff_link("diff", NULL, hc(ctx, "diff"), ctx->qry.head,
 852                                ctx->qry.sha1, ctx->qry.sha2, ctx->qry.vpath, 0);
 853                 if (ctx->repo->max_stats)
 854                         cgit_stats_link("stats", NULL, hc(ctx, "stats"),
 855                                         ctx->qry.head, ctx->qry.vpath);
 856                 if (ctx->repo->readme)
 857                         reporevlink("about", "about", NULL,
 858                                     hc(ctx, "about"), ctx->qry.head, NULL,
 859                                     NULL);
 860                 html("</td><td class='form'>");
 861                 html("<form class='right' method='get' action='");
 862                 if (ctx->cfg.virtual_root)
 863                         html_url_path(cgit_fileurl(ctx->qry.repo, "log",
 864                                                    ctx->qry.vpath, NULL));
 865                 html("'>\n");
 866                 cgit_add_hidden_formfields(1, 0, "log");
 867                 html("<select name='qt'>\n");
 868                 html_option("grep", "log msg", ctx->qry.grep);
 869                 html_option("author", "author", ctx->qry.grep);
 870                 html_option("committer", "committer", ctx->qry.grep);
 871                 html_option("range", "range", ctx->qry.grep);
 872                 html("</select>\n");
 873                 html("<input class='txt' type='text' size='10' name='q' value='");
 874                 html_attr(ctx->qry.search);
 875                 html("'/>\n");
 876                 html("<input type='submit' value='search'/>\n");
 877                 html("</form>\n");
 878         } else {
 879                 site_link(NULL, "index", NULL, hc(ctx, "repolist"), NULL, NULL, 0);
 880                 if (ctx->cfg.root_readme)
 881                         site_link("about", "about", NULL, hc(ctx, "about"),
 882                                   NULL, NULL, 0);
 883                 html("</td><td class='form'>");
 884                 html("<form method='get' action='");
 885                 html_attr(cgit_rooturl());
 886                 html("'>\n");
 887                 html("<input type='text' name='q' size='10' value='");
 888                 html_attr(ctx->qry.search);
 889                 html("'/>\n");
 890                 html("<input type='submit' value='search'/>\n");
 891                 html("</form>");
 892         }
 893         html("</td></tr></table>\n");
 894         if (ctx->qry.vpath) {
 895                 html("<div class='path'>");
 896                 html("path: ");
 897                 cgit_print_path_crumbs(ctx, ctx->qry.vpath);
 898                 html("</div>");
 899         }
 900         html("<div class='content'>");
 901 }
 902
 903 void cgit_print_filemode(unsigned short mode)
 904 {
 905         if (S_ISDIR(mode))
 906                 html("d");
 907         else if (S_ISLNK(mode))
 908                 html("l");
 909         else if (S_ISGITLINK(mode))
 910                 html("m");
 911         else
 912                 html("-");
 913         html_fileperm(mode >> 6);
 914         html_fileperm(mode >> 3);
 915         html_fileperm(mode);
 916 }
 917
 918 void cgit_print_snapshot_links(const char *repo, const char *head,
 919                                const char *hex, int snapshots)
 920 {
 921         const struct cgit_snapshot_format* f;
 922         char *prefix;
 923         char *filename;
 924         unsigned char sha1[20];
 925
 926         if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
 927             (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
 928                 hex++;
 929         prefix = xstrdup(fmt("%s-%s", cgit_repobasename(repo), hex));
 930         for (f = cgit_snapshot_formats; f->suffix; f++) {
 931                 if (!(snapshots & f->bit))
 932                         continue;
 933                 filename = fmt("%s%s", prefix, f->suffix);
 934                 cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
 935                 html("<br/>");
 936         }
 937         free(prefix);
 938 }