ui-shared.c

   1 /* ui-shared.c: common web output functions
   2  *
   3  * Copyright (C) 2006 Lars Hjemli
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10 #include "cmd.h"
  11 #include "html.h"
  12
  13 const char cgit_doctype[] =
  14 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
  15 "  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
  16
  17 static char *http_date(time_t t)
  18 {
  19         static char day[][4] =
  20                 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
  21         static char month[][4] =
  22                 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
  23                  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  24         struct tm *tm = gmtime(&t);
  25         return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
  26                    tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
  27                    tm->tm_hour, tm->tm_min, tm->tm_sec);
  28 }
  29
  30 void cgit_print_error(const char *msg)
  31 {
  32         html("<div class='error'>");
  33         html_txt(msg);
  34         html("</div>\n");
  35 }
  36
  37 char *cgit_httpscheme()
  38 {
  39         if (ctx.env.https && !strcmp(ctx.env.https, "on"))
  40                 return "https://";
  41         else
  42                 return "http://";
  43 }
  44
  45 char *cgit_hosturl()
  46 {
  47         if (ctx.env.http_host)
  48                 return ctx.env.http_host;
  49         if (!ctx.env.server_name)
  50                 return NULL;
  51         if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
  52                 return ctx.env.server_name;
  53         return xstrdup(fmt("%s:%s", ctx.env.server_name, ctx.env.server_port));
  54 }
  55
  56 char *cgit_rooturl()
  57 {
  58         if (ctx.cfg.virtual_root)
  59                 return fmt("%s/", ctx.cfg.virtual_root);
  60         else
  61                 return ctx.cfg.script_name;
  62 }
  63
  64 char *cgit_repourl(const char *reponame)
  65 {
  66         if (ctx.cfg.virtual_root) {
  67                 return fmt("%s/%s/", ctx.cfg.virtual_root, reponame);
  68         } else {
  69                 return fmt("?r=%s", reponame);
  70         }
  71 }
  72
  73 char *cgit_fileurl(const char *reponame, const char *pagename,
  74                    const char *filename, const char *query)
  75 {
  76         char *tmp;
  77         char *delim;
  78
  79         if (ctx.cfg.virtual_root) {
  80                 tmp = fmt("%s/%s/%s/%s", ctx.cfg.virtual_root, reponame,
  81                           pagename, (filename ? filename:""));
  82                 delim = "?";
  83         } else {
  84                 tmp = fmt("?url=%s/%s/%s", reponame, pagename,
  85                           (filename ? filename : ""));
  86                 delim = "&";
  87         }
  88         if (query)
  89                 tmp = fmt("%s%s%s", tmp, delim, query);
  90         return tmp;
  91 }
  92
  93 char *cgit_pageurl(const char *reponame, const char *pagename,
  94                    const char *query)
  95 {
  96         return cgit_fileurl(reponame,pagename,0,query);
  97 }
  98
  99 const char *cgit_repobasename(const char *reponame)
 100 {
 101         /* I assume we don't need to store more than one repo basename */
 102         static char rvbuf[1024];
 103         int p;
 104         const char *rv;
 105         strncpy(rvbuf,reponame,sizeof(rvbuf));
 106         if(rvbuf[sizeof(rvbuf)-1])
 107                 die("cgit_repobasename: truncated repository name '%s'", reponame);
 108         p = strlen(rvbuf)-1;
 109         /* strip trailing slashes */
 110         while(p && rvbuf[p]=='/') rvbuf[p--]=0;
 111         /* strip trailing .git */
 112         if(p>=3 && !strncmp(&rvbuf[p-3],".git",4)) {
 113                 p -= 3; rvbuf[p--] = 0;
 114         }
 115         /* strip more trailing slashes if any */
 116         while( p && rvbuf[p]=='/') rvbuf[p--]=0;
 117         /* find last slash in the remaining string */
 118         rv = strrchr(rvbuf,'/');
 119         if(rv)
 120                 return ++rv;
 121         return rvbuf;
 122 }
 123
 124 char *cgit_currurl()
 125 {
 126         if (!ctx.cfg.virtual_root)
 127                 return ctx.cfg.script_name;
 128         else if (ctx.qry.page)
 129                 return fmt("%s/%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo, ctx.qry.page);
 130         else if (ctx.qry.repo)
 131                 return fmt("%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo);
 132         else
 133                 return fmt("%s/", ctx.cfg.virtual_root);
 134 }
 135
 136 static void site_url(const char *page, const char *search, int ofs)
 137 {
 138         char *delim = "?";
 139
 140         if (ctx.cfg.virtual_root) {
 141                 html_attr(ctx.cfg.virtual_root);
 142                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
 143                         html("/");
 144         } else
 145                 html(ctx.cfg.script_name);
 146
 147         if (page) {
 148                 htmlf("?p=%s", page);
 149                 delim = "&";
 150         }
 151         if (search) {
 152                 html(delim);
 153                 html("q=");
 154                 html_attr(search);
 155                 delim = "&";
 156         }
 157         if (ofs) {
 158                 html(delim);
 159                 htmlf("ofs=%d", ofs);
 160         }
 161 }
 162
 163 static void site_link(const char *page, const char *name, const char *title,
 164                       const char *class, const char *search, int ofs)
 165 {
 166         html("<a");
 167         if (title) {
 168                 html(" title='");
 169                 html_attr(title);
 170                 html("'");
 171         }
 172         if (class) {
 173                 html(" class='");
 174                 html_attr(class);
 175                 html("'");
 176         }
 177         html(" href='");
 178         site_url(page, search, ofs);
 179         html("'>");
 180         html_txt(name);
 181         html("</a>");
 182 }
 183
 184 void cgit_index_link(const char *name, const char *title, const char *class,
 185                      const char *pattern, int ofs)
 186 {
 187         site_link(NULL, name, title, class, pattern, ofs);
 188 }
 189
 190 static char *repolink(const char *title, const char *class, const char *page,
 191                       const char *head, const char *path)
 192 {
 193         char *delim = "?";
 194
 195         html("<a");
 196         if (title) {
 197                 html(" title='");
 198                 html_attr(title);
 199                 html("'");
 200         }
 201         if (class) {
 202                 html(" class='");
 203                 html_attr(class);
 204                 html("'");
 205         }
 206         html(" href='");
 207         if (ctx.cfg.virtual_root) {
 208                 html_url_path(ctx.cfg.virtual_root);
 209                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
 210                         html("/");
 211                 html_url_path(ctx.repo->url);
 212                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 213                         html("/");
 214                 if (page) {
 215                         html_url_path(page);
 216                         html("/");
 217                         if (path)
 218                                 html_url_path(path);
 219                 }
 220         } else {
 221                 html(ctx.cfg.script_name);
 222                 html("?url=");
 223                 html_url_arg(ctx.repo->url);
 224                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 225                         html("/");
 226                 if (page) {
 227                         html_url_arg(page);
 228                         html("/");
 229                         if (path)
 230                                 html_url_arg(path);
 231                 }
 232                 delim = "&amp;";
 233         }
 234         if (head && strcmp(head, ctx.repo->defbranch)) {
 235                 html(delim);
 236                 html("h=");
 237                 html_url_arg(head);
 238                 delim = "&amp;";
 239         }
 240         return fmt("%s", delim);
 241 }
 242
 243 static void reporevlink(const char *page, const char *name, const char *title,
 244                         const char *class, const char *head, const char *rev,
 245                         const char *path)
 246 {
 247         char *delim;
 248
 249         delim = repolink(title, class, page, head, path);
 250         if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
 251                 html(delim);
 252                 html("id=");
 253                 html_url_arg(rev);
 254         }
 255         html("'>");
 256         html_txt(name);
 257         html("</a>");
 258 }
 259
 260 void cgit_summary_link(const char *name, const char *title, const char *class,
 261                        const char *head)
 262 {
 263         reporevlink(NULL, name, title, class, head, NULL, NULL);
 264 }
 265
 266 void cgit_tag_link(const char *name, const char *title, const char *class,
 267                    const char *head, const char *rev)
 268 {
 269         reporevlink("tag", name, title, class, head, rev, NULL);
 270 }
 271
 272 void cgit_tree_link(const char *name, const char *title, const char *class,
 273                     const char *head, const char *rev, const char *path)
 274 {
 275         reporevlink("tree", name, title, class, head, rev, path);
 276 }
 277
 278 void cgit_plain_link(const char *name, const char *title, const char *class,
 279                      const char *head, const char *rev, const char *path)
 280 {
 281         reporevlink("plain", name, title, class, head, rev, path);
 282 }
 283
 284 void cgit_log_link(const char *name, const char *title, const char *class,
 285                    const char *head, const char *rev, const char *path,
 286                    int ofs, const char *grep, const char *pattern, int showmsg)
 287 {
 288         char *delim;
 289
 290         delim = repolink(title, class, "log", head, path);
 291         if (rev && strcmp(rev, ctx.qry.head)) {
 292                 html(delim);
 293                 html("id=");
 294                 html_url_arg(rev);
 295                 delim = "&";
 296         }
 297         if (grep && pattern) {
 298                 html(delim);
 299                 html("qt=");
 300                 html_url_arg(grep);
 301                 delim = "&";
 302                 html(delim);
 303                 html("q=");
 304                 html_url_arg(pattern);
 305         }
 306         if (ofs > 0) {
 307                 html(delim);
 308                 html("ofs=");
 309                 htmlf("%d", ofs);
 310                 delim = "&";
 311         }
 312         if (showmsg) {
 313                 html(delim);
 314                 html("showmsg=1");
 315         }
 316         html("'>");
 317         html_txt(name);
 318         html("</a>");
 319 }
 320
 321 void cgit_commit_link(char *name, const char *title, const char *class,
 322                       const char *head, const char *rev, const char *path,
 323                       int toggle_ssdiff)
 324 {
 325         if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 326                 name[ctx.cfg.max_msg_len] = '\0';
 327                 name[ctx.cfg.max_msg_len - 1] = '.';
 328                 name[ctx.cfg.max_msg_len - 2] = '.';
 329                 name[ctx.cfg.max_msg_len - 3] = '.';
 330         }
 331
 332         char *delim;
 333
 334         delim = repolink(title, class, "commit", head, path);
 335         if (rev && strcmp(rev, ctx.qry.head)) {
 336                 html(delim);
 337                 html("id=");
 338                 html_url_arg(rev);
 339                 delim = "&amp;";
 340         }
 341         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 342                 html(delim);
 343                 html("ss=1");
 344                 delim = "&amp;";
 345         }
 346         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 347                 html(delim);
 348                 html("context=");
 349                 htmlf("%d", ctx.qry.context);
 350                 delim = "&amp;";
 351         }
 352         html("'>");
 353         html_txt(name);
 354         html("</a>");
 355 }
 356
 357 void cgit_refs_link(const char *name, const char *title, const char *class,
 358                     const char *head, const char *rev, const char *path)
 359 {
 360         reporevlink("refs", name, title, class, head, rev, path);
 361 }
 362
 363 void cgit_snapshot_link(const char *name, const char *title, const char *class,
 364                         const char *head, const char *rev,
 365                         const char *archivename)
 366 {
 367         reporevlink("snapshot", name, title, class, head, rev, archivename);
 368 }
 369
 370 void cgit_diff_link(const char *name, const char *title, const char *class,
 371                     const char *head, const char *new_rev, const char *old_rev,
 372                     const char *path, int toggle_ssdiff)
 373 {
 374         char *delim;
 375
 376         delim = repolink(title, class, "diff", head, path);
 377         if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 378                 html(delim);
 379                 html("id=");
 380                 html_url_arg(new_rev);
 381                 delim = "&amp;";
 382         }
 383         if (old_rev) {
 384                 html(delim);
 385                 html("id2=");
 386                 html_url_arg(old_rev);
 387                 delim = "&amp;";
 388         }
 389         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 390                 html(delim);
 391                 html("ss=1");
 392                 delim = "&amp;";
 393         }
 394         if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 395                 html(delim);
 396                 html("context=");
 397                 htmlf("%d", ctx.qry.context);
 398                 delim = "&amp;";
 399         }
 400         html("'>");
 401         html_txt(name);
 402         html("</a>");
 403 }
 404
 405 void cgit_patch_link(const char *name, const char *title, const char *class,
 406                      const char *head, const char *rev, const char *path)
 407 {
 408         reporevlink("patch", name, title, class, head, rev, path);
 409 }
 410
 411 void cgit_stats_link(const char *name, const char *title, const char *class,
 412                      const char *head, const char *path)
 413 {
 414         reporevlink("stats", name, title, class, head, NULL, path);
 415 }
 416
 417 void cgit_self_link(char *name, const char *title, const char *class,
 418                     struct cgit_context *ctx)
 419 {
 420         if (!strcmp(ctx->qry.page, "repolist"))
 421                 return cgit_index_link(name, title, class, ctx->qry.search,
 422                                        ctx->qry.ofs);
 423         else if (!strcmp(ctx->qry.page, "summary"))
 424                 return cgit_summary_link(name, title, class, ctx->qry.head);
 425         else if (!strcmp(ctx->qry.page, "tag"))
 426                 return cgit_tag_link(name, title, class, ctx->qry.head,
 427                                      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL);
 428         else if (!strcmp(ctx->qry.page, "tree"))
 429                 return cgit_tree_link(name, title, class, ctx->qry.head,
 430                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 431                                       ctx->qry.path);
 432         else if (!strcmp(ctx->qry.page, "plain"))
 433                 return cgit_plain_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, "log"))
 437                 return cgit_log_link(name, title, class, ctx->qry.head,
 438                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 439                                       ctx->qry.path, ctx->qry.ofs,
 440                                       ctx->qry.grep, ctx->qry.search,
 441                                       ctx->qry.showmsg);
 442         else if (!strcmp(ctx->qry.page, "commit"))
 443                 return cgit_commit_link(name, title, class, ctx->qry.head,
 444                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 445                                       ctx->qry.path, 0);
 446         else if (!strcmp(ctx->qry.page, "patch"))
 447                 return cgit_patch_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, "refs"))
 451                 return cgit_refs_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, "snapshot"))
 455                 return cgit_snapshot_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, "diff"))
 459                 return cgit_diff_link(name, title, class, ctx->qry.head,
 460                                       ctx->qry.sha1, ctx->qry.sha2,
 461                                       ctx->qry.path, 0);
 462         else if (!strcmp(ctx->qry.page, "stats"))
 463                 return cgit_stats_link(name, title, class, ctx->qry.head,
 464                                       ctx->qry.path);
 465
 466         /* Don't known how to make link for this page */
 467         repolink(title, class, ctx->qry.page, ctx->qry.head, ctx->qry.path);
 468         html("><!-- cgit_self_link() doesn't know how to make link for page '");
 469         html_txt(ctx->qry.page);
 470         html("' -->");
 471         html_txt(name);
 472         html("</a>");
 473 }
 474
 475 void cgit_object_link(struct object *obj)
 476 {
 477         char *page, *shortrev, *fullrev, *name;
 478
 479         fullrev = sha1_to_hex(obj->sha1);
 480         shortrev = xstrdup(fullrev);
 481         shortrev[10] = '\0';
 482         if (obj->type == OBJ_COMMIT) {
 483                 cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 484                                  ctx.qry.head, fullrev, NULL, 0);
 485                 return;
 486         } else if (obj->type == OBJ_TREE)
 487                 page = "tree";
 488         else if (obj->type == OBJ_TAG)
 489                 page = "tag";
 490         else
 491                 page = "blob";
 492         name = fmt("%s %s...", typename(obj->type), shortrev);
 493         reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 494 }
 495
 496 void cgit_print_date(time_t secs, const char *format, int local_time)
 497 {
 498         char buf[64];
 499         struct tm *time;
 500
 501         if (!secs)
 502                 return;
 503         if(local_time)
 504                 time = localtime(&secs);
 505         else
 506                 time = gmtime(&secs);
 507         strftime(buf, sizeof(buf)-1, format, time);
 508         html_txt(buf);
 509 }
 510
 511 void cgit_print_age(time_t t, time_t max_relative, const char *format)
 512 {
 513         time_t now, secs;
 514
 515         if (!t)
 516                 return;
 517         time(&now);
 518         secs = now - t;
 519
 520         if (secs > max_relative && max_relative >= 0) {
 521                 cgit_print_date(t, format, ctx.cfg.local_time);
 522                 return;
 523         }
 524
 525         if (secs < TM_HOUR * 2) {
 526                 htmlf("<span class='age-mins'>%.0f min.</span>",
 527                       secs * 1.0 / TM_MIN);
 528                 return;
 529         }
 530         if (secs < TM_DAY * 2) {
 531                 htmlf("<span class='age-hours'>%.0f hours</span>",
 532                       secs * 1.0 / TM_HOUR);
 533                 return;
 534         }
 535         if (secs < TM_WEEK * 2) {
 536                 htmlf("<span class='age-days'>%.0f days</span>",
 537                       secs * 1.0 / TM_DAY);
 538                 return;
 539         }
 540         if (secs < TM_MONTH * 2) {
 541                 htmlf("<span class='age-weeks'>%.0f weeks</span>",
 542                       secs * 1.0 / TM_WEEK);
 543                 return;
 544         }
 545         if (secs < TM_YEAR * 2) {
 546                 htmlf("<span class='age-months'>%.0f months</span>",
 547                       secs * 1.0 / TM_MONTH);
 548                 return;
 549         }
 550         htmlf("<span class='age-years'>%.0f years</span>",
 551               secs * 1.0 / TM_YEAR);
 552 }
 553
 554 void cgit_print_http_headers(struct cgit_context *ctx)
 555 {
 556         if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
 557                 return;
 558
 559         if (ctx->page.status)
 560                 htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
 561         if (ctx->page.mimetype && ctx->page.charset)
 562                 htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
 563                       ctx->page.charset);
 564         else if (ctx->page.mimetype)
 565                 htmlf("Content-Type: %s\n", ctx->page.mimetype);
 566         if (ctx->page.size)
 567                 htmlf("Content-Length: %ld\n", ctx->page.size);
 568         if (ctx->page.filename)
 569                 htmlf("Content-Disposition: inline; filename=\"%s\"\n",
 570                       ctx->page.filename);
 571         htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
 572         htmlf("Expires: %s\n", http_date(ctx->page.expires));
 573         if (ctx->page.etag)
 574                 htmlf("ETag: \"%s\"\n", ctx->page.etag);
 575         html("\n");
 576         if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
 577                 exit(0);
 578 }
 579
 580 void cgit_print_docstart(struct cgit_context *ctx)
 581 {
 582         if (ctx->cfg.embedded) {
 583                 if (ctx->cfg.header)
 584                         html_include(ctx->cfg.header);
 585                 return;
 586         }
 587
 588         char *host = cgit_hosturl();
 589         html(cgit_doctype);
 590         html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 591         html("<head>\n");
 592         html("<title>");
 593         html_txt(ctx->page.title);
 594         html("</title>\n");
 595         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 596         if (ctx->cfg.robots && *ctx->cfg.robots)
 597                 htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
 598         html("<link rel='stylesheet' type='text/css' href='");
 599         html_attr(ctx->cfg.css);
 600         html("'/>\n");
 601         if (ctx->cfg.favicon) {
 602                 html("<link rel='shortcut icon' href='");
 603                 html_attr(ctx->cfg.favicon);
 604                 html("'/>\n");
 605         }
 606         if (host && ctx->repo) {
 607                 html("<link rel='alternate' title='Atom feed' href='");
 608                 html(cgit_httpscheme());
 609                 html_attr(cgit_hosturl());
 610                 html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.vpath,
 611                                        fmt("h=%s", ctx->qry.head)));
 612                 html("' type='application/atom+xml'/>\n");
 613         }
 614         if (ctx->cfg.head_include)
 615                 html_include(ctx->cfg.head_include);
 616         html("</head>\n");
 617         html("<body>\n");
 618         if (ctx->cfg.header)
 619                 html_include(ctx->cfg.header);
 620 }
 621
 622 void cgit_print_docend()
 623 {
 624         html("</div> <!-- class=content -->\n");
 625         if (ctx.cfg.embedded) {
 626                 html("</div> <!-- id=cgit -->\n");
 627                 if (ctx.cfg.footer)
 628                         html_include(ctx.cfg.footer);
 629                 return;
 630         }
 631         if (ctx.cfg.footer)
 632                 html_include(ctx.cfg.footer);
 633         else {
 634                 htmlf("<div class='footer'>generated  by cgit %s at ",
 635                         cgit_version);
 636                 cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 637                 html("</div>\n");
 638         }
 639         html("</div> <!-- id=cgit -->\n");
 640         html("</body>\n</html>\n");
 641 }
 642
 643 int print_branch_option(const char *refname, const unsigned char *sha1,
 644                         int flags, void *cb_data)
 645 {
 646         char *name = (char *)refname;
 647         html_option(name, name, ctx.qry.head);
 648         return 0;
 649 }
 650
 651 int print_archive_ref(const char *refname, const unsigned char *sha1,
 652                        int flags, void *cb_data)
 653 {
 654         struct tag *tag;
 655         struct taginfo *info;
 656         struct object *obj;
 657         char buf[256], *url;
 658         unsigned char fileid[20];
 659         int *header = (int *)cb_data;
 660
 661         if (prefixcmp(refname, "refs/archives"))
 662                 return 0;
 663         strncpy(buf, refname+14, sizeof(buf));
 664         obj = parse_object(sha1);
 665         if (!obj)
 666                 return 1;
 667         if (obj->type == OBJ_TAG) {
 668                 tag = lookup_tag(sha1);
 669                 if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
 670                         return 0;
 671                 hashcpy(fileid, tag->tagged->sha1);
 672         } else if (obj->type != OBJ_BLOB) {
 673                 return 0;
 674         } else {
 675                 hashcpy(fileid, sha1);
 676         }
 677         if (!*header) {
 678                 html("<h1>download</h1>\n");
 679                 *header = 1;
 680         }
 681         url = cgit_pageurl(ctx.qry.repo, "blob",
 682                            fmt("id=%s&amp;path=%s", sha1_to_hex(fileid),
 683                                buf));
 684         html_link_open(url, NULL, "menu");
 685         html_txt(strlpart(buf, 20));
 686         html_link_close();
 687         return 0;
 688 }
 689
 690 void cgit_add_hidden_formfields(int incl_head, int incl_search,
 691                                 const char *page)
 692 {
 693         char *url;
 694
 695         if (!ctx.cfg.virtual_root) {
 696                 url = fmt("%s/%s", ctx.qry.repo, page);
 697                 if (ctx.qry.vpath)
 698                         url = fmt("%s/%s", url, ctx.qry.vpath);
 699                 html_hidden("url", url);
 700         }
 701
 702         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 703             strcmp(ctx.qry.head, ctx.repo->defbranch))
 704                 html_hidden("h", ctx.qry.head);
 705
 706         if (ctx.qry.sha1)
 707                 html_hidden("id", ctx.qry.sha1);
 708         if (ctx.qry.sha2)
 709                 html_hidden("id2", ctx.qry.sha2);
 710         if (ctx.qry.showmsg)
 711                 html_hidden("showmsg", "1");
 712
 713         if (incl_search) {
 714                 if (ctx.qry.grep)
 715                         html_hidden("qt", ctx.qry.grep);
 716                 if (ctx.qry.search)
 717                         html_hidden("q", ctx.qry.search);
 718         }
 719 }
 720
 721 static const char *hc(struct cgit_context *ctx, const char *page)
 722 {
 723         return strcmp(ctx->qry.page, page) ? NULL : "active";
 724 }
 725
 726 static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
 727 {
 728         char *old_path = ctx->qry.path;
 729         char *p = path, *q, *end = path + strlen(path);
 730
 731         ctx->qry.path = NULL;
 732         cgit_self_link("root", NULL, NULL, ctx);
 733         ctx->qry.path = p = path;
 734         while (p < end) {
 735                 if (!(q = strchr(p, '/')))
 736                         q = end;
 737                 *q = '\0';
 738                 html_txt("/");
 739                 cgit_self_link(p, NULL, NULL, ctx);
 740                 if (q < end)
 741                         *q = '/';
 742                 p = q + 1;
 743         }
 744         ctx->qry.path = old_path;
 745 }
 746
 747 static void print_header(struct cgit_context *ctx)
 748 {
 749         html("<table id='header'>\n");
 750         html("<tr>\n");
 751
 752         if (ctx->cfg.logo && ctx->cfg.logo[0] != 0) {
 753                 html("<td class='logo' rowspan='2'><a href='");
 754                 if (ctx->cfg.logo_link)
 755                         html_attr(ctx->cfg.logo_link);
 756                 else
 757                         html_attr(cgit_rooturl());
 758                 html("'><img src='");
 759                 html_attr(ctx->cfg.logo);
 760                 html("' alt='cgit logo'/></a></td>\n");
 761         }
 762
 763         html("<td class='main'>");
 764         if (ctx->repo) {
 765                 cgit_index_link("index", NULL, NULL, NULL, 0);
 766                 html(" : ");
 767                 cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
 768                 html("</td><td class='form'>");
 769                 html("<form method='get' action=''>\n");
 770                 cgit_add_hidden_formfields(0, 1, ctx->qry.page);
 771                 html("<select name='h' onchange='this.form.submit();'>\n");
 772                 for_each_branch_ref(print_branch_option, ctx->qry.head);
 773                 html("</select> ");
 774                 html("<input type='submit' name='' value='switch'/>");
 775                 html("</form>");
 776         } else
 777                 html_txt(ctx->cfg.root_title);
 778         html("</td></tr>\n");
 779
 780         html("<tr><td class='sub'>");
 781         if (ctx->repo) {
 782                 html_txt(ctx->repo->desc);
 783                 html("</td><td class='sub right'>");
 784                 html_txt(ctx->repo->owner);
 785         } else {
 786                 if (ctx->cfg.root_desc)
 787                         html_txt(ctx->cfg.root_desc);
 788                 else if (ctx->cfg.index_info)
 789                         html_include(ctx->cfg.index_info);
 790         }
 791         html("</td></tr></table>\n");
 792 }
 793
 794 void cgit_print_pageheader(struct cgit_context *ctx)
 795 {
 796         html("<div id='cgit'>");
 797         if (!ctx->cfg.noheader)
 798                 print_header(ctx);
 799
 800         html("<table class='tabs'><tr><td>\n");
 801         if (ctx->repo) {
 802                 cgit_summary_link("summary", NULL, hc(ctx, "summary"),
 803                                   ctx->qry.head);
 804                 cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
 805                                ctx->qry.sha1, NULL);
 806                 cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
 807                               NULL, ctx->qry.vpath, 0, NULL, NULL,
 808                               ctx->qry.showmsg);
 809                 cgit_tree_link("tree", NULL, hc(ctx, "tree"), ctx->qry.head,
 810                                ctx->qry.sha1, ctx->qry.vpath);
 811                 cgit_commit_link("commit", NULL, hc(ctx, "commit"),
 812                                  ctx->qry.head, ctx->qry.sha1, ctx->qry.vpath, 0);
 813                 cgit_diff_link("diff", NULL, hc(ctx, "diff"), ctx->qry.head,
 814                                ctx->qry.sha1, ctx->qry.sha2, ctx->qry.vpath, 0);
 815                 if (ctx->repo->max_stats)
 816                         cgit_stats_link("stats", NULL, hc(ctx, "stats"),
 817                                         ctx->qry.head, ctx->qry.vpath);
 818                 if (ctx->repo->readme)
 819                         reporevlink("about", "about", NULL,
 820                                     hc(ctx, "about"), ctx->qry.head, NULL,
 821                                     NULL);
 822                 html("</td><td class='form'>");
 823                 html("<form class='right' method='get' action='");
 824                 if (ctx->cfg.virtual_root)
 825                         html_url_path(cgit_fileurl(ctx->qry.repo, "log",
 826                                                    ctx->qry.vpath, NULL));
 827                 html("'>\n");
 828                 cgit_add_hidden_formfields(1, 0, "log");
 829                 html("<select name='qt'>\n");
 830                 html_option("grep", "log msg", ctx->qry.grep);
 831                 html_option("author", "author", ctx->qry.grep);
 832                 html_option("committer", "committer", ctx->qry.grep);
 833                 html_option("range", "range", ctx->qry.grep);
 834                 html("</select>\n");
 835                 html("<input class='txt' type='text' size='10' name='q' value='");
 836                 html_attr(ctx->qry.search);
 837                 html("'/>\n");
 838                 html("<input type='submit' value='search'/>\n");
 839                 html("</form>\n");
 840         } else {
 841                 site_link(NULL, "index", NULL, hc(ctx, "repolist"), NULL, 0);
 842                 if (ctx->cfg.root_readme)
 843                         site_link("about", "about", NULL, hc(ctx, "about"),
 844                                   NULL, 0);
 845                 html("</td><td class='form'>");
 846                 html("<form method='get' action='");
 847                 html_attr(cgit_rooturl());
 848                 html("'>\n");
 849                 html("<input type='text' name='q' size='10' value='");
 850                 html_attr(ctx->qry.search);
 851                 html("'/>\n");
 852                 html("<input type='submit' value='search'/>\n");
 853                 html("</form>");
 854         }
 855         html("</td></tr></table>\n");
 856         if (ctx->qry.vpath) {
 857                 html("<div class='path'>");
 858                 html("path: ");
 859                 cgit_print_path_crumbs(ctx, ctx->qry.vpath);
 860                 html("</div>");
 861         }
 862         html("<div class='content'>");
 863 }
 864
 865 void cgit_print_filemode(unsigned short mode)
 866 {
 867         if (S_ISDIR(mode))
 868                 html("d");
 869         else if (S_ISLNK(mode))
 870                 html("l");
 871         else if (S_ISGITLINK(mode))
 872                 html("m");
 873         else
 874                 html("-");
 875         html_fileperm(mode >> 6);
 876         html_fileperm(mode >> 3);
 877         html_fileperm(mode);
 878 }
 879
 880 void cgit_print_snapshot_links(const char *repo, const char *head,
 881                                const char *hex, int snapshots)
 882 {
 883         const struct cgit_snapshot_format* f;
 884         char *prefix;
 885         char *filename;
 886         unsigned char sha1[20];
 887
 888         if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
 889             (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
 890                 hex++;
 891         prefix = xstrdup(fmt("%s-%s", cgit_repobasename(repo), hex));
 892         for (f = cgit_snapshot_formats; f->suffix; f++) {
 893                 if (!(snapshots & f->bit))
 894                         continue;
 895                 filename = fmt("%s%s", prefix, f->suffix);
 896                 cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
 897                 html("<br/>");
 898         }
 899 }