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