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a hyperfast web frontend for git written in c

ui-shared.c (view raw)

   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
  14const 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
  18static 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
  31void cgit_print_error(const char *fmt, ...)
  32{
  33	va_list ap;
  34	va_start(ap, fmt);
  35	cgit_vprint_error(fmt, ap);
  36	va_end(ap);
  37}
  38
  39void cgit_vprint_error(const char *fmt, va_list ap)
  40{
  41	va_list cp;
  42	html("<div class='error'>");
  43	va_copy(cp, ap);
  44	html_vtxtf(fmt, cp);
  45	va_end(cp);
  46	html("</div>\n");
  47}
  48
  49const char *cgit_httpscheme()
  50{
  51	if (ctx.env.https && !strcmp(ctx.env.https, "on"))
  52		return "https://";
  53	else
  54		return "http://";
  55}
  56
  57const char *cgit_hosturl()
  58{
  59	if (ctx.env.http_host)
  60		return ctx.env.http_host;
  61	if (!ctx.env.server_name)
  62		return NULL;
  63	if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
  64		return ctx.env.server_name;
  65	return fmtalloc("%s:%s", ctx.env.server_name, ctx.env.server_port);
  66}
  67
  68const char *cgit_rooturl()
  69{
  70	if (ctx.cfg.virtual_root)
  71		return ctx.cfg.virtual_root;
  72	else
  73		return ctx.cfg.script_name;
  74}
  75
  76char *cgit_repourl(const char *reponame)
  77{
  78	if (ctx.cfg.virtual_root)
  79		return fmtalloc("%s%s/", ctx.cfg.virtual_root, reponame);
  80	else
  81		return fmtalloc("?r=%s", reponame);
  82}
  83
  84char *cgit_fileurl(const char *reponame, const char *pagename,
  85		   const char *filename, const char *query)
  86{
  87	struct strbuf sb = STRBUF_INIT;
  88	char *delim;
  89
  90	if (ctx.cfg.virtual_root) {
  91		strbuf_addf(&sb, "%s%s/%s/%s", ctx.cfg.virtual_root, reponame,
  92			    pagename, (filename ? filename:""));
  93		delim = "?";
  94	} else {
  95		strbuf_addf(&sb, "?url=%s/%s/%s", reponame, pagename,
  96			    (filename ? filename : ""));
  97		delim = "&amp;";
  98	}
  99	if (query)
 100		strbuf_addf(&sb, "%s%s", delim, query);
 101	return strbuf_detach(&sb, NULL);
 102}
 103
 104char *cgit_pageurl(const char *reponame, const char *pagename,
 105		   const char *query)
 106{
 107	return cgit_fileurl(reponame, pagename, 0, query);
 108}
 109
 110const char *cgit_repobasename(const char *reponame)
 111{
 112	/* I assume we don't need to store more than one repo basename */
 113	static char rvbuf[1024];
 114	int p;
 115	const char *rv;
 116	strncpy(rvbuf, reponame, sizeof(rvbuf));
 117	if (rvbuf[sizeof(rvbuf)-1])
 118		die("cgit_repobasename: truncated repository name '%s'", reponame);
 119	p = strlen(rvbuf)-1;
 120	/* strip trailing slashes */
 121	while (p && rvbuf[p] == '/') rvbuf[p--] = 0;
 122	/* strip trailing .git */
 123	if (p >= 3 && !strncmp(&rvbuf[p-3], ".git", 4)) {
 124		p -= 3; rvbuf[p--] = 0;
 125	}
 126	/* strip more trailing slashes if any */
 127	while ( p && rvbuf[p] == '/') rvbuf[p--] = 0;
 128	/* find last slash in the remaining string */
 129	rv = strrchr(rvbuf,'/');
 130	if (rv)
 131		return ++rv;
 132	return rvbuf;
 133}
 134
 135static void site_url(const char *page, const char *search, const char *sort, int ofs)
 136{
 137	char *delim = "?";
 138
 139	if (ctx.cfg.virtual_root)
 140		html_attr(ctx.cfg.virtual_root);
 141	else
 142		html(ctx.cfg.script_name);
 143
 144	if (page) {
 145		htmlf("?p=%s", page);
 146		delim = "&amp;";
 147	}
 148	if (search) {
 149		html(delim);
 150		html("q=");
 151		html_attr(search);
 152		delim = "&amp;";
 153	}
 154	if (sort) {
 155		html(delim);
 156		html("s=");
 157		html_attr(sort);
 158		delim = "&amp;";
 159	}
 160	if (ofs) {
 161		html(delim);
 162		htmlf("ofs=%d", ofs);
 163	}
 164}
 165
 166static void site_link(const char *page, const char *name, const char *title,
 167		      const char *class, const char *search, const char *sort, int ofs)
 168{
 169	html("<a");
 170	if (title) {
 171		html(" title='");
 172		html_attr(title);
 173		html("'");
 174	}
 175	if (class) {
 176		html(" class='");
 177		html_attr(class);
 178		html("'");
 179	}
 180	html(" href='");
 181	site_url(page, search, sort, ofs);
 182	html("'>");
 183	html_txt(name);
 184	html("</a>");
 185}
 186
 187void cgit_index_link(const char *name, const char *title, const char *class,
 188		     const char *pattern, const char *sort, int ofs)
 189{
 190	site_link(NULL, name, title, class, pattern, sort, ofs);
 191}
 192
 193static char *repolink(const char *title, const char *class, const char *page,
 194		      const char *head, const char *path)
 195{
 196	char *delim = "?";
 197
 198	html("<a");
 199	if (title) {
 200		html(" title='");
 201		html_attr(title);
 202		html("'");
 203	}
 204	if (class) {
 205		html(" class='");
 206		html_attr(class);
 207		html("'");
 208	}
 209	html(" href='");
 210	if (ctx.cfg.virtual_root) {
 211		html_url_path(ctx.cfg.virtual_root);
 212		html_url_path(ctx.repo->url);
 213		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 214			html("/");
 215		if (page) {
 216			html_url_path(page);
 217			html("/");
 218			if (path)
 219				html_url_path(path);
 220		}
 221	} else {
 222		html(ctx.cfg.script_name);
 223		html("?url=");
 224		html_url_arg(ctx.repo->url);
 225		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 226			html("/");
 227		if (page) {
 228			html_url_arg(page);
 229			html("/");
 230			if (path)
 231				html_url_arg(path);
 232		}
 233		delim = "&amp;";
 234	}
 235	if (head && strcmp(head, ctx.repo->defbranch)) {
 236		html(delim);
 237		html("h=");
 238		html_url_arg(head);
 239		delim = "&amp;";
 240	}
 241	return fmt("%s", delim);
 242}
 243
 244static void reporevlink(const char *page, const char *name, const char *title,
 245			const char *class, const char *head, const char *rev,
 246			const char *path)
 247{
 248	char *delim;
 249
 250	delim = repolink(title, class, page, head, path);
 251	if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
 252		html(delim);
 253		html("id=");
 254		html_url_arg(rev);
 255	}
 256	html("'>");
 257	html_txt(name);
 258	html("</a>");
 259}
 260
 261void cgit_summary_link(const char *name, const char *title, const char *class,
 262		       const char *head)
 263{
 264	reporevlink(NULL, name, title, class, head, NULL, NULL);
 265}
 266
 267void cgit_tag_link(const char *name, const char *title, const char *class,
 268		   const char *head, const char *rev)
 269{
 270	reporevlink("tag", name, title, class, head, rev, NULL);
 271}
 272
 273void cgit_tree_link(const char *name, const char *title, const char *class,
 274		    const char *head, const char *rev, const char *path)
 275{
 276	reporevlink("tree", name, title, class, head, rev, path);
 277}
 278
 279void cgit_plain_link(const char *name, const char *title, const char *class,
 280		     const char *head, const char *rev, const char *path)
 281{
 282	reporevlink("plain", name, title, class, head, rev, path);
 283}
 284
 285void cgit_log_link(const char *name, const char *title, const char *class,
 286		   const char *head, const char *rev, const char *path,
 287		   int ofs, const char *grep, const char *pattern, int showmsg)
 288{
 289	char *delim;
 290
 291	delim = repolink(title, class, "log", head, path);
 292	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 293		html(delim);
 294		html("id=");
 295		html_url_arg(rev);
 296		delim = "&amp;";
 297	}
 298	if (grep && pattern) {
 299		html(delim);
 300		html("qt=");
 301		html_url_arg(grep);
 302		delim = "&amp;";
 303		html(delim);
 304		html("q=");
 305		html_url_arg(pattern);
 306	}
 307	if (ofs > 0) {
 308		html(delim);
 309		html("ofs=");
 310		htmlf("%d", ofs);
 311		delim = "&amp;";
 312	}
 313	if (showmsg) {
 314		html(delim);
 315		html("showmsg=1");
 316	}
 317	html("'>");
 318	html_txt(name);
 319	html("</a>");
 320}
 321
 322void cgit_commit_link(char *name, const char *title, const char *class,
 323		      const char *head, const char *rev, const char *path,
 324		      int toggle_ssdiff)
 325{
 326	if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 327		name[ctx.cfg.max_msg_len] = '\0';
 328		name[ctx.cfg.max_msg_len - 1] = '.';
 329		name[ctx.cfg.max_msg_len - 2] = '.';
 330		name[ctx.cfg.max_msg_len - 3] = '.';
 331	}
 332
 333	char *delim;
 334
 335	delim = repolink(title, class, "commit", head, path);
 336	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
 337		html(delim);
 338		html("id=");
 339		html_url_arg(rev);
 340		delim = "&amp;";
 341	}
 342	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 343		html(delim);
 344		html("ss=1");
 345		delim = "&amp;";
 346	}
 347	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 348		html(delim);
 349		html("context=");
 350		htmlf("%d", ctx.qry.context);
 351		delim = "&amp;";
 352	}
 353	if (ctx.qry.ignorews) {
 354		html(delim);
 355		html("ignorews=1");
 356		delim = "&amp;";
 357	}
 358	html("'>");
 359	if (name[0] != '\0')
 360		html_txt(name);
 361	else
 362		html_txt("(no commit message)");
 363	html("</a>");
 364}
 365
 366void cgit_refs_link(const char *name, const char *title, const char *class,
 367		    const char *head, const char *rev, const char *path)
 368{
 369	reporevlink("refs", name, title, class, head, rev, path);
 370}
 371
 372void cgit_snapshot_link(const char *name, const char *title, const char *class,
 373			const char *head, const char *rev,
 374			const char *archivename)
 375{
 376	reporevlink("snapshot", name, title, class, head, rev, archivename);
 377}
 378
 379void cgit_diff_link(const char *name, const char *title, const char *class,
 380		    const char *head, const char *new_rev, const char *old_rev,
 381		    const char *path, int toggle_ssdiff)
 382{
 383	char *delim;
 384
 385	delim = repolink(title, class, "diff", head, path);
 386	if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 387		html(delim);
 388		html("id=");
 389		html_url_arg(new_rev);
 390		delim = "&amp;";
 391	}
 392	if (old_rev) {
 393		html(delim);
 394		html("id2=");
 395		html_url_arg(old_rev);
 396		delim = "&amp;";
 397	}
 398	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 399		html(delim);
 400		html("ss=1");
 401		delim = "&amp;";
 402	}
 403	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
 404		html(delim);
 405		html("context=");
 406		htmlf("%d", ctx.qry.context);
 407		delim = "&amp;";
 408	}
 409	if (ctx.qry.ignorews) {
 410		html(delim);
 411		html("ignorews=1");
 412		delim = "&amp;";
 413	}
 414	html("'>");
 415	html_txt(name);
 416	html("</a>");
 417}
 418
 419void cgit_patch_link(const char *name, const char *title, const char *class,
 420		     const char *head, const char *rev, const char *path)
 421{
 422	reporevlink("patch", name, title, class, head, rev, path);
 423}
 424
 425void cgit_stats_link(const char *name, const char *title, const char *class,
 426		     const char *head, const char *path)
 427{
 428	reporevlink("stats", name, title, class, head, NULL, path);
 429}
 430
 431static void cgit_self_link(char *name, const char *title, const char *class,
 432			   struct cgit_context *ctx)
 433{
 434	if (!strcmp(ctx->qry.page, "repolist"))
 435		cgit_index_link(name, title, class, ctx->qry.search, ctx->qry.sort,
 436				ctx->qry.ofs);
 437	else if (!strcmp(ctx->qry.page, "summary"))
 438		cgit_summary_link(name, title, class, ctx->qry.head);
 439	else if (!strcmp(ctx->qry.page, "tag"))
 440		cgit_tag_link(name, title, class, ctx->qry.head,
 441			      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL);
 442	else if (!strcmp(ctx->qry.page, "tree"))
 443		cgit_tree_link(name, title, class, ctx->qry.head,
 444			       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 445			       ctx->qry.path);
 446	else if (!strcmp(ctx->qry.page, "plain"))
 447		cgit_plain_link(name, title, class, ctx->qry.head,
 448				ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 449				ctx->qry.path);
 450	else if (!strcmp(ctx->qry.page, "log"))
 451		cgit_log_link(name, title, class, ctx->qry.head,
 452			      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 453			      ctx->qry.path, ctx->qry.ofs,
 454			      ctx->qry.grep, ctx->qry.search,
 455			      ctx->qry.showmsg);
 456	else if (!strcmp(ctx->qry.page, "commit"))
 457		cgit_commit_link(name, title, class, ctx->qry.head,
 458				 ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 459				 ctx->qry.path, 0);
 460	else if (!strcmp(ctx->qry.page, "patch"))
 461		cgit_patch_link(name, title, class, ctx->qry.head,
 462				ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 463				ctx->qry.path);
 464	else if (!strcmp(ctx->qry.page, "refs"))
 465		cgit_refs_link(name, title, class, ctx->qry.head,
 466			       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 467			       ctx->qry.path);
 468	else if (!strcmp(ctx->qry.page, "snapshot"))
 469		cgit_snapshot_link(name, title, class, ctx->qry.head,
 470				   ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 471				   ctx->qry.path);
 472	else if (!strcmp(ctx->qry.page, "diff"))
 473		cgit_diff_link(name, title, class, ctx->qry.head,
 474			       ctx->qry.sha1, ctx->qry.sha2,
 475			       ctx->qry.path, 0);
 476	else if (!strcmp(ctx->qry.page, "stats"))
 477		cgit_stats_link(name, title, class, ctx->qry.head,
 478				ctx->qry.path);
 479	else {
 480		/* Don't known how to make link for this page */
 481		repolink(title, class, ctx->qry.page, ctx->qry.head, ctx->qry.path);
 482		html("><!-- cgit_self_link() doesn't know how to make link for page '");
 483		html_txt(ctx->qry.page);
 484		html("' -->");
 485		html_txt(name);
 486		html("</a>");
 487	}
 488}
 489
 490void cgit_object_link(struct object *obj)
 491{
 492	char *page, *shortrev, *fullrev, *name;
 493
 494	fullrev = sha1_to_hex(obj->sha1);
 495	shortrev = xstrdup(fullrev);
 496	shortrev[10] = '\0';
 497	if (obj->type == OBJ_COMMIT) {
 498		cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 499				 ctx.qry.head, fullrev, NULL, 0);
 500		return;
 501	} else if (obj->type == OBJ_TREE)
 502		page = "tree";
 503	else if (obj->type == OBJ_TAG)
 504		page = "tag";
 505	else
 506		page = "blob";
 507	name = fmt("%s %s...", typename(obj->type), shortrev);
 508	reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 509}
 510
 511static struct string_list_item *lookup_path(struct string_list *list,
 512					    const char *path)
 513{
 514	struct string_list_item *item;
 515
 516	while (path && path[0]) {
 517		if ((item = string_list_lookup(list, path)))
 518			return item;
 519		if (!(path = strchr(path, '/')))
 520			break;
 521		path++;
 522	}
 523	return NULL;
 524}
 525
 526void cgit_submodule_link(const char *class, char *path, const char *rev)
 527{
 528	struct string_list *list;
 529	struct string_list_item *item;
 530	char tail, *dir;
 531	size_t len;
 532
 533	len = 0;
 534	tail = 0;
 535	list = &ctx.repo->submodules;
 536	item = lookup_path(list, path);
 537	if (!item) {
 538		len = strlen(path);
 539		tail = path[len - 1];
 540		if (tail == '/') {
 541			path[len - 1] = 0;
 542			item = lookup_path(list, path);
 543		}
 544	}
 545	html("<a ");
 546	if (class)
 547		htmlf("class='%s' ", class);
 548	html("href='");
 549	if (item) {
 550		html_attrf(item->util, rev);
 551	} else if (ctx.repo->module_link) {
 552		dir = strrchr(path, '/');
 553		if (dir)
 554			dir++;
 555		else
 556			dir = path;
 557		html_attrf(ctx.repo->module_link, dir, rev);
 558	} else {
 559		html("#");
 560	}
 561	html("'>");
 562	html_txt(path);
 563	html("</a>");
 564	html_txtf(" @ %.7s", rev);
 565	if (item && tail)
 566		path[len - 1] = tail;
 567}
 568
 569void cgit_print_date(time_t secs, const char *format, int local_time)
 570{
 571	char buf[64];
 572	struct tm *time;
 573
 574	if (!secs)
 575		return;
 576	if (local_time)
 577		time = localtime(&secs);
 578	else
 579		time = gmtime(&secs);
 580	strftime(buf, sizeof(buf)-1, format, time);
 581	html_txt(buf);
 582}
 583
 584void cgit_print_age(time_t t, time_t max_relative, const char *format)
 585{
 586	time_t now, secs;
 587
 588	if (!t)
 589		return;
 590	time(&now);
 591	secs = now - t;
 592
 593	if (secs > max_relative && max_relative >= 0) {
 594		cgit_print_date(t, format, ctx.cfg.local_time);
 595		return;
 596	}
 597
 598	if (secs < TM_HOUR * 2) {
 599		htmlf("<span class='age-mins'>%.0f min.</span>",
 600		      secs * 1.0 / TM_MIN);
 601		return;
 602	}
 603	if (secs < TM_DAY * 2) {
 604		htmlf("<span class='age-hours'>%.0f hours</span>",
 605		      secs * 1.0 / TM_HOUR);
 606		return;
 607	}
 608	if (secs < TM_WEEK * 2) {
 609		htmlf("<span class='age-days'>%.0f days</span>",
 610		      secs * 1.0 / TM_DAY);
 611		return;
 612	}
 613	if (secs < TM_MONTH * 2) {
 614		htmlf("<span class='age-weeks'>%.0f weeks</span>",
 615		      secs * 1.0 / TM_WEEK);
 616		return;
 617	}
 618	if (secs < TM_YEAR * 2) {
 619		htmlf("<span class='age-months'>%.0f months</span>",
 620		      secs * 1.0 / TM_MONTH);
 621		return;
 622	}
 623	htmlf("<span class='age-years'>%.0f years</span>",
 624	      secs * 1.0 / TM_YEAR);
 625}
 626
 627void cgit_print_http_headers(struct cgit_context *ctx)
 628{
 629	if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
 630		return;
 631
 632	if (ctx->page.status)
 633		htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
 634	if (ctx->page.mimetype && ctx->page.charset)
 635		htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
 636		      ctx->page.charset);
 637	else if (ctx->page.mimetype)
 638		htmlf("Content-Type: %s\n", ctx->page.mimetype);
 639	if (ctx->page.size)
 640		htmlf("Content-Length: %zd\n", ctx->page.size);
 641	if (ctx->page.filename)
 642		htmlf("Content-Disposition: inline; filename=\"%s\"\n",
 643		      ctx->page.filename);
 644	htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
 645	htmlf("Expires: %s\n", http_date(ctx->page.expires));
 646	if (ctx->page.etag)
 647		htmlf("ETag: \"%s\"\n", ctx->page.etag);
 648	html("\n");
 649	if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
 650		exit(0);
 651}
 652
 653void cgit_print_docstart(struct cgit_context *ctx)
 654{
 655	if (ctx->cfg.embedded) {
 656		if (ctx->cfg.header)
 657			html_include(ctx->cfg.header);
 658		return;
 659	}
 660
 661	const char *host = cgit_hosturl();
 662	html(cgit_doctype);
 663	html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 664	html("<head>\n");
 665	html("<title>");
 666	html_txt(ctx->page.title);
 667	html("</title>\n");
 668	htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 669	if (ctx->cfg.robots && *ctx->cfg.robots)
 670		htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
 671	html("<link rel='stylesheet' type='text/css' href='");
 672	html_attr(ctx->cfg.css);
 673	html("'/>\n");
 674	if (ctx->cfg.favicon) {
 675		html("<link rel='shortcut icon' href='");
 676		html_attr(ctx->cfg.favicon);
 677		html("'/>\n");
 678	}
 679	if (host && ctx->repo && ctx->qry.head) {
 680		struct strbuf sb = STRBUF_INIT;
 681		strbuf_addf(&sb, "h=%s", ctx->qry.head);
 682
 683		html("<link rel='alternate' title='Atom feed' href='");
 684		html(cgit_httpscheme());
 685		html_attr(cgit_hosturl());
 686		html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.vpath,
 687				       sb.buf));
 688		html("' type='application/atom+xml'/>\n");
 689		strbuf_release(&sb);
 690	}
 691	if (ctx->cfg.head_include)
 692		html_include(ctx->cfg.head_include);
 693	html("</head>\n");
 694	html("<body>\n");
 695	if (ctx->cfg.header)
 696		html_include(ctx->cfg.header);
 697}
 698
 699void cgit_print_docend()
 700{
 701	html("</div> <!-- class=content -->\n");
 702	if (ctx.cfg.embedded) {
 703		html("</div> <!-- id=cgit -->\n");
 704		if (ctx.cfg.footer)
 705			html_include(ctx.cfg.footer);
 706		return;
 707	}
 708	if (ctx.cfg.footer)
 709		html_include(ctx.cfg.footer);
 710	else {
 711		htmlf("<div class='footer'>generated  by cgit %s at ",
 712			cgit_version);
 713		cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 714		html("</div>\n");
 715	}
 716	html("</div> <!-- id=cgit -->\n");
 717	html("</body>\n</html>\n");
 718}
 719
 720static int print_branch_option(const char *refname, const unsigned char *sha1,
 721			       int flags, void *cb_data)
 722{
 723	char *name = (char *)refname;
 724	html_option(name, name, ctx.qry.head);
 725	return 0;
 726}
 727
 728void cgit_add_hidden_formfields(int incl_head, int incl_search,
 729				const char *page)
 730{
 731	if (!ctx.cfg.virtual_root) {
 732		struct strbuf url = STRBUF_INIT;
 733
 734		strbuf_addf(&url, "%s/%s", ctx.qry.repo, page);
 735		if (ctx.qry.vpath)
 736			strbuf_addf(&url, "/%s", ctx.qry.vpath);
 737		html_hidden("url", url.buf);
 738		strbuf_release(&url);
 739	}
 740
 741	if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 742	    strcmp(ctx.qry.head, ctx.repo->defbranch))
 743		html_hidden("h", ctx.qry.head);
 744
 745	if (ctx.qry.sha1)
 746		html_hidden("id", ctx.qry.sha1);
 747	if (ctx.qry.sha2)
 748		html_hidden("id2", ctx.qry.sha2);
 749	if (ctx.qry.showmsg)
 750		html_hidden("showmsg", "1");
 751
 752	if (incl_search) {
 753		if (ctx.qry.grep)
 754			html_hidden("qt", ctx.qry.grep);
 755		if (ctx.qry.search)
 756			html_hidden("q", ctx.qry.search);
 757	}
 758}
 759
 760static const char *hc(struct cgit_context *ctx, const char *page)
 761{
 762	return strcmp(ctx->qry.page, page) ? NULL : "active";
 763}
 764
 765static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
 766{
 767	char *old_path = ctx->qry.path;
 768	char *p = path, *q, *end = path + strlen(path);
 769
 770	ctx->qry.path = NULL;
 771	cgit_self_link("root", NULL, NULL, ctx);
 772	ctx->qry.path = p = path;
 773	while (p < end) {
 774		if (!(q = strchr(p, '/')))
 775			q = end;
 776		*q = '\0';
 777		html_txt("/");
 778		cgit_self_link(p, NULL, NULL, ctx);
 779		if (q < end)
 780			*q = '/';
 781		p = q + 1;
 782	}
 783	ctx->qry.path = old_path;
 784}
 785
 786static void print_header(struct cgit_context *ctx)
 787{
 788	char *logo = NULL, *logo_link = NULL;
 789
 790	html("<table id='header'>\n");
 791	html("<tr>\n");
 792
 793	if (ctx->repo && ctx->repo->logo && *ctx->repo->logo)
 794		logo = ctx->repo->logo;
 795	else
 796		logo = ctx->cfg.logo;
 797	if (ctx->repo && ctx->repo->logo_link && *ctx->repo->logo_link)
 798		logo_link = ctx->repo->logo_link;
 799	else
 800		logo_link = ctx->cfg.logo_link;
 801	if (logo && *logo) {
 802		html("<td class='logo' rowspan='2'><a href='");
 803		if (logo_link && *logo_link)
 804			html_attr(logo_link);
 805		else
 806			html_attr(cgit_rooturl());
 807		html("'><img src='");
 808		html_attr(logo);
 809		html("' alt='cgit logo'/></a></td>\n");
 810	}
 811
 812	html("<td class='main'>");
 813	if (ctx->repo) {
 814		cgit_index_link("index", NULL, NULL, NULL, NULL, 0);
 815		html(" : ");
 816		cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
 817		html("</td><td class='form'>");
 818		html("<form method='get' action=''>\n");
 819		cgit_add_hidden_formfields(0, 1, ctx->qry.page);
 820		html("<select name='h' onchange='this.form.submit();'>\n");
 821		for_each_branch_ref(print_branch_option, ctx->qry.head);
 822		html("</select> ");
 823		html("<input type='submit' name='' value='switch'/>");
 824		html("</form>");
 825	} else
 826		html_txt(ctx->cfg.root_title);
 827	html("</td></tr>\n");
 828
 829	html("<tr><td class='sub'>");
 830	if (ctx->repo) {
 831		html_txt(ctx->repo->desc);
 832		html("</td><td class='sub right'>");
 833		html_txt(ctx->repo->owner);
 834	} else {
 835		if (ctx->cfg.root_desc)
 836			html_txt(ctx->cfg.root_desc);
 837		else if (ctx->cfg.index_info)
 838			html_include(ctx->cfg.index_info);
 839	}
 840	html("</td></tr></table>\n");
 841}
 842
 843void cgit_print_pageheader(struct cgit_context *ctx)
 844{
 845	html("<div id='cgit'>");
 846	if (!ctx->cfg.noheader)
 847		print_header(ctx);
 848
 849	html("<table class='tabs'><tr><td>\n");
 850	if (ctx->repo) {
 851		cgit_summary_link("summary", NULL, hc(ctx, "summary"),
 852				  ctx->qry.head);
 853		cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
 854			       ctx->qry.sha1, NULL);
 855		cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
 856			      NULL, ctx->qry.vpath, 0, NULL, NULL,
 857			      ctx->qry.showmsg);
 858		cgit_tree_link("tree", NULL, hc(ctx, "tree"), ctx->qry.head,
 859			       ctx->qry.sha1, ctx->qry.vpath);
 860		cgit_commit_link("commit", NULL, hc(ctx, "commit"),
 861				 ctx->qry.head, ctx->qry.sha1, ctx->qry.vpath, 0);
 862		cgit_diff_link("diff", NULL, hc(ctx, "diff"), ctx->qry.head,
 863			       ctx->qry.sha1, ctx->qry.sha2, ctx->qry.vpath, 0);
 864		if (ctx->repo->max_stats)
 865			cgit_stats_link("stats", NULL, hc(ctx, "stats"),
 866					ctx->qry.head, ctx->qry.vpath);
 867		if (ctx->repo->readme.nr)
 868			reporevlink("about", "about", NULL,
 869				    hc(ctx, "about"), ctx->qry.head, NULL,
 870				    NULL);
 871		html("</td><td class='form'>");
 872		html("<form class='right' method='get' action='");
 873		if (ctx->cfg.virtual_root)
 874			html_url_path(cgit_fileurl(ctx->qry.repo, "log",
 875						   ctx->qry.vpath, NULL));
 876		html("'>\n");
 877		cgit_add_hidden_formfields(1, 0, "log");
 878		html("<select name='qt'>\n");
 879		html_option("grep", "log msg", ctx->qry.grep);
 880		html_option("author", "author", ctx->qry.grep);
 881		html_option("committer", "committer", ctx->qry.grep);
 882		html_option("range", "range", ctx->qry.grep);
 883		html("</select>\n");
 884		html("<input class='txt' type='text' size='10' name='q' value='");
 885		html_attr(ctx->qry.search);
 886		html("'/>\n");
 887		html("<input type='submit' value='search'/>\n");
 888		html("</form>\n");
 889	} else {
 890		site_link(NULL, "index", NULL, hc(ctx, "repolist"), NULL, NULL, 0);
 891		if (ctx->cfg.root_readme)
 892			site_link("about", "about", NULL, hc(ctx, "about"),
 893				  NULL, NULL, 0);
 894		html("</td><td class='form'>");
 895		html("<form method='get' action='");
 896		html_attr(cgit_rooturl());
 897		html("'>\n");
 898		html("<input type='text' name='q' size='10' value='");
 899		html_attr(ctx->qry.search);
 900		html("'/>\n");
 901		html("<input type='submit' value='search'/>\n");
 902		html("</form>");
 903	}
 904	html("</td></tr></table>\n");
 905	if (ctx->qry.vpath) {
 906		html("<div class='path'>");
 907		html("path: ");
 908		cgit_print_path_crumbs(ctx, ctx->qry.vpath);
 909		html("</div>");
 910	}
 911	html("<div class='content'>");
 912}
 913
 914void cgit_print_filemode(unsigned short mode)
 915{
 916	if (S_ISDIR(mode))
 917		html("d");
 918	else if (S_ISLNK(mode))
 919		html("l");
 920	else if (S_ISGITLINK(mode))
 921		html("m");
 922	else
 923		html("-");
 924	html_fileperm(mode >> 6);
 925	html_fileperm(mode >> 3);
 926	html_fileperm(mode);
 927}
 928
 929void cgit_print_snapshot_links(const char *repo, const char *head,
 930			       const char *hex, int snapshots)
 931{
 932	const struct cgit_snapshot_format* f;
 933	struct strbuf filename = STRBUF_INIT;
 934	size_t prefixlen;
 935	unsigned char sha1[20];
 936
 937	if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
 938	    (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
 939		hex++;
 940	strbuf_addf(&filename, "%s-%s", cgit_repobasename(repo), hex);
 941	prefixlen = filename.len;
 942	for (f = cgit_snapshot_formats; f->suffix; f++) {
 943		if (!(snapshots & f->bit))
 944			continue;
 945		strbuf_setlen(&filename, prefixlen);
 946		strbuf_addstr(&filename, f->suffix);
 947		cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL,
 948				   filename.buf);
 949		html("<br/>");
 950	}
 951	strbuf_release(&filename);
 952}
 953
 954static void print_line_raw(char *line, int len)
 955{
 956	char c = line[len-1];
 957
 958	line[len-1] = '\0';
 959	htmlf("%s\n", line);
 960	line[len-1] = c;
 961}
 962
 963static void header_raw(unsigned char *sha1, char *path1, int mode1,
 964		       unsigned char *sha2, char *path2, int mode2)
 965{
 966	char *abbrev1, *abbrev2;
 967	int subproject;
 968
 969	subproject = (S_ISGITLINK(mode1) || S_ISGITLINK(mode2));
 970	htmlf("diff --git a/%s b/%s\n", path1, path2);
 971
 972	if (mode1 == 0)
 973		htmlf("new file mode %.6o\n", mode2);
 974
 975	if (mode2 == 0)
 976		htmlf("deleted file mode %.6o\n", mode1);
 977
 978	if (!subproject) {
 979		abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
 980		abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
 981		htmlf("index %s..%s", abbrev1, abbrev2);
 982		free(abbrev1);
 983		free(abbrev2);
 984		if (mode1 != 0 && mode2 != 0) {
 985			htmlf(" %.6o", mode1);
 986			if (mode2 != mode1)
 987				htmlf("..%.6o", mode2);
 988		}
 989
 990		if (is_null_sha1(sha1)) {
 991			path1 = "dev/null";
 992			htmlf("\n--- /%s\n", path1);
 993		} else
 994			htmlf("\n--- a/%s\n", path1);
 995
 996		if (is_null_sha1(sha2)) {
 997			path2 = "dev/null";
 998			htmlf("+++ /%s\n", path2);
 999		} else
1000			htmlf("+++ b/%s\n", path2);
1001	}
1002}
1003
1004void filepair_cb_raw(struct diff_filepair *pair)
1005{
1006	unsigned long old_size = 0;
1007	unsigned long new_size = 0;
1008	int binary = 0;
1009
1010	header_raw(pair->one->sha1, pair->one->path, pair->one->mode,
1011		   pair->two->sha1, pair->two->path, pair->two->mode);
1012	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
1013		if (S_ISGITLINK(pair->one->mode))
1014			print_line_raw(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
1015		if (S_ISGITLINK(pair->two->mode))
1016			print_line_raw(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
1017		return;
1018	}
1019	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
1020			    &new_size, &binary, 0, 0, print_line_raw))
1021		html("Error running diff");
1022	if (binary)
1023		html("Binary files differ\n");
1024}