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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 "cmd.h"
 11#include "html.h"
 12
 13const 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
 17static 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
 30void cgit_print_error(const char *msg)
 31{
 32	html("<div class='error'>");
 33	html_txt(msg);
 34	html("</div>\n");
 35}
 36
 37char *cgit_httpscheme()
 38{
 39	if (ctx.env.https && !strcmp(ctx.env.https, "on"))
 40		return "https://";
 41	else
 42		return "http://";
 43}
 44
 45char *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
 56char *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
 64char *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
 73char *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 = "&amp;";
 87	}
 88	if (query)
 89		tmp = fmt("%s%s%s", tmp, delim, query);
 90	return tmp;
 91}
 92
 93char *cgit_pageurl(const char *reponame, const char *pagename,
 94		   const char *query)
 95{
 96	return cgit_fileurl(reponame, pagename, 0, query);
 97}
 98
 99const 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
124static void site_url(const char *page, const char *search, const char *sort, int ofs)
125{
126	char *delim = "?";
127
128	if (ctx.cfg.virtual_root) {
129		html_attr(ctx.cfg.virtual_root);
130		if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
131			html("/");
132	} else
133		html(ctx.cfg.script_name);
134
135	if (page) {
136		htmlf("?p=%s", page);
137		delim = "&amp;";
138	}
139	if (search) {
140		html(delim);
141		html("q=");
142		html_attr(search);
143		delim = "&amp;";
144	}
145	if (sort) {
146		html(delim);
147		html("s=");
148		html_attr(sort);
149		delim = "&amp;";
150	}
151	if (ofs) {
152		html(delim);
153		htmlf("ofs=%d", ofs);
154	}
155}
156
157static void site_link(const char *page, const char *name, const char *title,
158		      const char *class, const char *search, const char *sort, int ofs)
159{
160	html("<a");
161	if (title) {
162		html(" title='");
163		html_attr(title);
164		html("'");
165	}
166	if (class) {
167		html(" class='");
168		html_attr(class);
169		html("'");
170	}
171	html(" href='");
172	site_url(page, search, sort, ofs);
173	html("'>");
174	html_txt(name);
175	html("</a>");
176}
177
178void cgit_index_link(const char *name, const char *title, const char *class,
179		     const char *pattern, const char *sort, int ofs)
180{
181	site_link(NULL, name, title, class, pattern, sort, ofs);
182}
183
184static char *repolink(const char *title, const char *class, const char *page,
185		      const char *head, const char *path)
186{
187	char *delim = "?";
188
189	html("<a");
190	if (title) {
191		html(" title='");
192		html_attr(title);
193		html("'");
194	}
195	if (class) {
196		html(" class='");
197		html_attr(class);
198		html("'");
199	}
200	html(" href='");
201	if (ctx.cfg.virtual_root) {
202		html_url_path(ctx.cfg.virtual_root);
203		if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
204			html("/");
205		html_url_path(ctx.repo->url);
206		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
207			html("/");
208		if (page) {
209			html_url_path(page);
210			html("/");
211			if (path)
212				html_url_path(path);
213		}
214	} else {
215		html(ctx.cfg.script_name);
216		html("?url=");
217		html_url_arg(ctx.repo->url);
218		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
219			html("/");
220		if (page) {
221			html_url_arg(page);
222			html("/");
223			if (path)
224				html_url_arg(path);
225		}
226		delim = "&amp;";
227	}
228	if (head && strcmp(head, ctx.repo->defbranch)) {
229		html(delim);
230		html("h=");
231		html_url_arg(head);
232		delim = "&amp;";
233	}
234	return fmt("%s", delim);
235}
236
237static void reporevlink(const char *page, const char *name, const char *title,
238			const char *class, const char *head, const char *rev,
239			const char *path)
240{
241	char *delim;
242
243	delim = repolink(title, class, page, head, path);
244	if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
245		html(delim);
246		html("id=");
247		html_url_arg(rev);
248	}
249	html("'>");
250	html_txt(name);
251	html("</a>");
252}
253
254void cgit_summary_link(const char *name, const char *title, const char *class,
255		       const char *head)
256{
257	reporevlink(NULL, name, title, class, head, NULL, NULL);
258}
259
260void cgit_tag_link(const char *name, const char *title, const char *class,
261		   const char *head, const char *rev)
262{
263	reporevlink("tag", name, title, class, head, rev, NULL);
264}
265
266void cgit_tree_link(const char *name, const char *title, const char *class,
267		    const char *head, const char *rev, const char *path)
268{
269	reporevlink("tree", name, title, class, head, rev, path);
270}
271
272void cgit_plain_link(const char *name, const char *title, const char *class,
273		     const char *head, const char *rev, const char *path)
274{
275	reporevlink("plain", name, title, class, head, rev, path);
276}
277
278void cgit_log_link(const char *name, const char *title, const char *class,
279		   const char *head, const char *rev, const char *path,
280		   int ofs, const char *grep, const char *pattern, int showmsg)
281{
282	char *delim;
283
284	delim = repolink(title, class, "log", head, path);
285	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
286		html(delim);
287		html("id=");
288		html_url_arg(rev);
289		delim = "&amp;";
290	}
291	if (grep && pattern) {
292		html(delim);
293		html("qt=");
294		html_url_arg(grep);
295		delim = "&amp;";
296		html(delim);
297		html("q=");
298		html_url_arg(pattern);
299	}
300	if (ofs > 0) {
301		html(delim);
302		html("ofs=");
303		htmlf("%d", ofs);
304		delim = "&amp;";
305	}
306	if (showmsg) {
307		html(delim);
308		html("showmsg=1");
309	}
310	html("'>");
311	html_txt(name);
312	html("</a>");
313}
314
315void cgit_commit_link(char *name, const char *title, const char *class,
316		      const char *head, const char *rev, const char *path,
317		      int toggle_ssdiff)
318{
319	if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
320		name[ctx.cfg.max_msg_len] = '\0';
321		name[ctx.cfg.max_msg_len - 1] = '.';
322		name[ctx.cfg.max_msg_len - 2] = '.';
323		name[ctx.cfg.max_msg_len - 3] = '.';
324	}
325
326	char *delim;
327
328	delim = repolink(title, class, "commit", head, path);
329	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
330		html(delim);
331		html("id=");
332		html_url_arg(rev);
333		delim = "&amp;";
334	}
335	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
336		html(delim);
337		html("ss=1");
338		delim = "&amp;";
339	}
340	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
341		html(delim);
342		html("context=");
343		htmlf("%d", ctx.qry.context);
344		delim = "&amp;";
345	}
346	if (ctx.qry.ignorews) {
347		html(delim);
348		html("ignorews=1");
349		delim = "&amp;";
350	}
351	html("'>");
352	if (name[0] != '\0')
353		html_txt(name);
354	else
355		html_txt("(no commit message)");
356	html("</a>");
357}
358
359void cgit_refs_link(const char *name, const char *title, const char *class,
360		    const char *head, const char *rev, const char *path)
361{
362	reporevlink("refs", name, title, class, head, rev, path);
363}
364
365void cgit_snapshot_link(const char *name, const char *title, const char *class,
366			const char *head, const char *rev,
367			const char *archivename)
368{
369	reporevlink("snapshot", name, title, class, head, rev, archivename);
370}
371
372void cgit_diff_link(const char *name, const char *title, const char *class,
373		    const char *head, const char *new_rev, const char *old_rev,
374		    const char *path, int toggle_ssdiff)
375{
376	char *delim;
377
378	delim = repolink(title, class, "diff", head, path);
379	if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
380		html(delim);
381		html("id=");
382		html_url_arg(new_rev);
383		delim = "&amp;";
384	}
385	if (old_rev) {
386		html(delim);
387		html("id2=");
388		html_url_arg(old_rev);
389		delim = "&amp;";
390	}
391	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
392		html(delim);
393		html("ss=1");
394		delim = "&amp;";
395	}
396	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
397		html(delim);
398		html("context=");
399		htmlf("%d", ctx.qry.context);
400		delim = "&amp;";
401	}
402	if (ctx.qry.ignorews) {
403		html(delim);
404		html("ignorews=1");
405		delim = "&amp;";
406	}
407	html("'>");
408	html_txt(name);
409	html("</a>");
410}
411
412void cgit_patch_link(const char *name, const char *title, const char *class,
413		     const char *head, const char *rev, const char *path)
414{
415	reporevlink("patch", name, title, class, head, rev, path);
416}
417
418void cgit_stats_link(const char *name, const char *title, const char *class,
419		     const char *head, const char *path)
420{
421	reporevlink("stats", name, title, class, head, NULL, path);
422}
423
424static void cgit_self_link(char *name, const char *title, const char *class,
425			   struct cgit_context *ctx)
426{
427	if (!strcmp(ctx->qry.page, "repolist"))
428		return cgit_index_link(name, title, class, ctx->qry.search, ctx->qry.sort,
429				       ctx->qry.ofs);
430	else if (!strcmp(ctx->qry.page, "summary"))
431		return cgit_summary_link(name, title, class, ctx->qry.head);
432	else if (!strcmp(ctx->qry.page, "tag"))
433		return cgit_tag_link(name, title, class, ctx->qry.head,
434				     ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL);
435	else if (!strcmp(ctx->qry.page, "tree"))
436		return cgit_tree_link(name, title, class, ctx->qry.head,
437				      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
438				      ctx->qry.path);
439	else if (!strcmp(ctx->qry.page, "plain"))
440		return cgit_plain_link(name, title, class, ctx->qry.head,
441				      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
442				      ctx->qry.path);
443	else if (!strcmp(ctx->qry.page, "log"))
444		return cgit_log_link(name, title, class, ctx->qry.head,
445				      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
446				      ctx->qry.path, ctx->qry.ofs,
447				      ctx->qry.grep, ctx->qry.search,
448				      ctx->qry.showmsg);
449	else if (!strcmp(ctx->qry.page, "commit"))
450		return cgit_commit_link(name, title, class, ctx->qry.head,
451				      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
452				      ctx->qry.path, 0);
453	else if (!strcmp(ctx->qry.page, "patch"))
454		return cgit_patch_link(name, title, class, ctx->qry.head,
455				      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
456				      ctx->qry.path);
457	else if (!strcmp(ctx->qry.page, "refs"))
458		return cgit_refs_link(name, title, class, ctx->qry.head,
459				      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
460				      ctx->qry.path);
461	else if (!strcmp(ctx->qry.page, "snapshot"))
462		return cgit_snapshot_link(name, title, class, ctx->qry.head,
463				      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
464				      ctx->qry.path);
465	else if (!strcmp(ctx->qry.page, "diff"))
466		return cgit_diff_link(name, title, class, ctx->qry.head,
467				      ctx->qry.sha1, ctx->qry.sha2,
468				      ctx->qry.path, 0);
469	else if (!strcmp(ctx->qry.page, "stats"))
470		return cgit_stats_link(name, title, class, ctx->qry.head,
471				      ctx->qry.path);
472
473	/* Don't known how to make link for this page */
474	repolink(title, class, ctx->qry.page, ctx->qry.head, ctx->qry.path);
475	html("><!-- cgit_self_link() doesn't know how to make link for page '");
476	html_txt(ctx->qry.page);
477	html("' -->");
478	html_txt(name);
479	html("</a>");
480}
481
482void cgit_object_link(struct object *obj)
483{
484	char *page, *shortrev, *fullrev, *name;
485
486	fullrev = sha1_to_hex(obj->sha1);
487	shortrev = xstrdup(fullrev);
488	shortrev[10] = '\0';
489	if (obj->type == OBJ_COMMIT) {
490		cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
491				 ctx.qry.head, fullrev, NULL, 0);
492		return;
493	} else if (obj->type == OBJ_TREE)
494		page = "tree";
495	else if (obj->type == OBJ_TAG)
496		page = "tag";
497	else
498		page = "blob";
499	name = fmt("%s %s...", typename(obj->type), shortrev);
500	reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
501}
502
503static struct string_list_item *lookup_path(struct string_list *list,
504					    const char *path)
505{
506	struct string_list_item *item;
507
508	while (path && path[0]) {
509		if ((item = string_list_lookup(list, path)))
510			return item;
511		if (!(path = strchr(path, '/')))
512			break;
513		path++;
514	}
515	return NULL;
516}
517
518void cgit_submodule_link(const char *class, char *path, const char *rev)
519{
520	struct string_list *list;
521	struct string_list_item *item;
522	char tail, *dir;
523	size_t len;
524
525	tail = 0;
526	list = &ctx.repo->submodules;
527	item = lookup_path(list, path);
528	if (!item) {
529		len = strlen(path);
530		tail = path[len - 1];
531		if (tail == '/') {
532			path[len - 1] = 0;
533			item = lookup_path(list, path);
534		}
535	}
536	html("<a ");
537	if (class)
538		htmlf("class='%s' ", class);
539	html("href='");
540	if (item) {
541		html_attr(fmt(item->util, rev));
542	} else if (ctx.repo->module_link) {
543		dir = strrchr(path, '/');
544		if (dir)
545			dir++;
546		else
547			dir = path;
548		html_attr(fmt(ctx.repo->module_link, dir, rev));
549	} else {
550		html("#");
551	}
552	html("'>");
553	html_txt(path);
554	html("</a>");
555	html_txt(fmt(" @ %.7s", rev));
556	if (item && tail)
557		path[len - 1] = tail;
558}
559
560void cgit_print_date(time_t secs, const char *format, int local_time)
561{
562	char buf[64];
563	struct tm *time;
564
565	if (!secs)
566		return;
567	if (local_time)
568		time = localtime(&secs);
569	else
570		time = gmtime(&secs);
571	strftime(buf, sizeof(buf)-1, format, time);
572	html_txt(buf);
573}
574
575void cgit_print_age(time_t t, time_t max_relative, const char *format)
576{
577	time_t now, secs;
578
579	if (!t)
580		return;
581	time(&now);
582	secs = now - t;
583
584	if (secs > max_relative && max_relative >= 0) {
585		cgit_print_date(t, format, ctx.cfg.local_time);
586		return;
587	}
588
589	if (secs < TM_HOUR * 2) {
590		htmlf("<span class='age-mins'>%.0f min.</span>",
591		      secs * 1.0 / TM_MIN);
592		return;
593	}
594	if (secs < TM_DAY * 2) {
595		htmlf("<span class='age-hours'>%.0f hours</span>",
596		      secs * 1.0 / TM_HOUR);
597		return;
598	}
599	if (secs < TM_WEEK * 2) {
600		htmlf("<span class='age-days'>%.0f days</span>",
601		      secs * 1.0 / TM_DAY);
602		return;
603	}
604	if (secs < TM_MONTH * 2) {
605		htmlf("<span class='age-weeks'>%.0f weeks</span>",
606		      secs * 1.0 / TM_WEEK);
607		return;
608	}
609	if (secs < TM_YEAR * 2) {
610		htmlf("<span class='age-months'>%.0f months</span>",
611		      secs * 1.0 / TM_MONTH);
612		return;
613	}
614	htmlf("<span class='age-years'>%.0f years</span>",
615	      secs * 1.0 / TM_YEAR);
616}
617
618void cgit_print_http_headers(struct cgit_context *ctx)
619{
620	if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
621		return;
622
623	if (ctx->page.status)
624		htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
625	if (ctx->page.mimetype && ctx->page.charset)
626		htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
627		      ctx->page.charset);
628	else if (ctx->page.mimetype)
629		htmlf("Content-Type: %s\n", ctx->page.mimetype);
630	if (ctx->page.size)
631		htmlf("Content-Length: %zd\n", ctx->page.size);
632	if (ctx->page.filename)
633		htmlf("Content-Disposition: inline; filename=\"%s\"\n",
634		      ctx->page.filename);
635	htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
636	htmlf("Expires: %s\n", http_date(ctx->page.expires));
637	if (ctx->page.etag)
638		htmlf("ETag: \"%s\"\n", ctx->page.etag);
639	html("\n");
640	if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
641		exit(0);
642}
643
644void cgit_print_docstart(struct cgit_context *ctx)
645{
646	if (ctx->cfg.embedded) {
647		if (ctx->cfg.header)
648			html_include(ctx->cfg.header);
649		return;
650	}
651
652	char *host = cgit_hosturl();
653	html(cgit_doctype);
654	html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
655	html("<head>\n");
656	html("<title>");
657	html_txt(ctx->page.title);
658	html("</title>\n");
659	htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
660	if (ctx->cfg.robots && *ctx->cfg.robots)
661		htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
662	html("<link rel='stylesheet' type='text/css' href='");
663	html_attr(ctx->cfg.css);
664	html("'/>\n");
665	if (ctx->cfg.favicon) {
666		html("<link rel='shortcut icon' href='");
667		html_attr(ctx->cfg.favicon);
668		html("'/>\n");
669	}
670	if (host && ctx->repo && ctx->qry.head) {
671		html("<link rel='alternate' title='Atom feed' href='");
672		html(cgit_httpscheme());
673		html_attr(cgit_hosturl());
674		html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.vpath,
675				       fmt("h=%s", ctx->qry.head)));
676		html("' type='application/atom+xml'/>\n");
677	}
678	if (ctx->cfg.head_include)
679		html_include(ctx->cfg.head_include);
680	html("</head>\n");
681	html("<body>\n");
682	if (ctx->cfg.header)
683		html_include(ctx->cfg.header);
684}
685
686void cgit_print_docend()
687{
688	html("</div> <!-- class=content -->\n");
689	if (ctx.cfg.embedded) {
690		html("</div> <!-- id=cgit -->\n");
691		if (ctx.cfg.footer)
692			html_include(ctx.cfg.footer);
693		return;
694	}
695	if (ctx.cfg.footer)
696		html_include(ctx.cfg.footer);
697	else {
698		htmlf("<div class='footer'>generated  by cgit %s at ",
699			cgit_version);
700		cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
701		html("</div>\n");
702	}
703	html("</div> <!-- id=cgit -->\n");
704	html("</body>\n</html>\n");
705}
706
707static int print_branch_option(const char *refname, const unsigned char *sha1,
708			       int flags, void *cb_data)
709{
710	char *name = (char *)refname;
711	html_option(name, name, ctx.qry.head);
712	return 0;
713}
714
715static int print_archive_ref(const char *refname, const unsigned char *sha1,
716			     int flags, void *cb_data)
717{
718	struct tag *tag;
719	struct taginfo *info;
720	struct object *obj;
721	char buf[256], *url;
722	unsigned char fileid[20];
723	int *header = (int *)cb_data;
724
725	if (prefixcmp(refname, "refs/archives"))
726		return 0;
727	strncpy(buf, refname + 14, sizeof(buf));
728	obj = parse_object(sha1);
729	if (!obj)
730		return 1;
731	if (obj->type == OBJ_TAG) {
732		tag = lookup_tag(sha1);
733		if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
734			return 0;
735		hashcpy(fileid, tag->tagged->sha1);
736	} else if (obj->type != OBJ_BLOB) {
737		return 0;
738	} else {
739		hashcpy(fileid, sha1);
740	}
741	if (!*header) {
742		html("<h1>download</h1>\n");
743		*header = 1;
744	}
745	url = cgit_pageurl(ctx.qry.repo, "blob",
746			   fmt("id=%s&amp;path=%s", sha1_to_hex(fileid),
747			       buf));
748	html_link_open(url, NULL, "menu");
749	html_txt(strlpart(buf, 20));
750	html_link_close();
751	return 0;
752}
753
754void cgit_add_hidden_formfields(int incl_head, int incl_search,
755				const char *page)
756{
757	char *url;
758
759	if (!ctx.cfg.virtual_root) {
760		url = fmt("%s/%s", ctx.qry.repo, page);
761		if (ctx.qry.vpath)
762			url = fmt("%s/%s", url, ctx.qry.vpath);
763		html_hidden("url", url);
764	}
765
766	if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
767	    strcmp(ctx.qry.head, ctx.repo->defbranch))
768		html_hidden("h", ctx.qry.head);
769
770	if (ctx.qry.sha1)
771		html_hidden("id", ctx.qry.sha1);
772	if (ctx.qry.sha2)
773		html_hidden("id2", ctx.qry.sha2);
774	if (ctx.qry.showmsg)
775		html_hidden("showmsg", "1");
776
777	if (incl_search) {
778		if (ctx.qry.grep)
779			html_hidden("qt", ctx.qry.grep);
780		if (ctx.qry.search)
781			html_hidden("q", ctx.qry.search);
782	}
783}
784
785static const char *hc(struct cgit_context *ctx, const char *page)
786{
787	return strcmp(ctx->qry.page, page) ? NULL : "active";
788}
789
790static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
791{
792	char *old_path = ctx->qry.path;
793	char *p = path, *q, *end = path + strlen(path);
794
795	ctx->qry.path = NULL;
796	cgit_self_link("root", NULL, NULL, ctx);
797	ctx->qry.path = p = path;
798	while (p < end) {
799		if (!(q = strchr(p, '/')))
800			q = end;
801		*q = '\0';
802		html_txt("/");
803		cgit_self_link(p, NULL, NULL, ctx);
804		if (q < end)
805			*q = '/';
806		p = q + 1;
807	}
808	ctx->qry.path = old_path;
809}
810
811static void print_header(struct cgit_context *ctx)
812{
813	char *logo = NULL, *logo_link = NULL;
814
815	html("<table id='header'>\n");
816	html("<tr>\n");
817
818	if (ctx->repo && ctx->repo->logo && *ctx->repo->logo)
819		logo = ctx->repo->logo;
820	else
821		logo = ctx->cfg.logo;
822	if (ctx->repo && ctx->repo->logo_link && *ctx->repo->logo_link)
823		logo_link = ctx->repo->logo_link;
824	else
825		logo_link = ctx->cfg.logo_link;
826	if (logo && *logo) {
827		html("<td class='logo' rowspan='2'><a href='");
828		if (logo_link && *logo_link)
829			html_attr(logo_link);
830		else
831			html_attr(cgit_rooturl());
832		html("'><img src='");
833		html_attr(logo);
834		html("' alt='cgit logo'/></a></td>\n");
835	}
836
837	html("<td class='main'>");
838	if (ctx->repo) {
839		cgit_index_link("index", NULL, NULL, NULL, NULL, 0);
840		html(" : ");
841		cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
842		html("</td><td class='form'>");
843		html("<form method='get' action=''>\n");
844		cgit_add_hidden_formfields(0, 1, ctx->qry.page);
845		html("<select name='h' onchange='this.form.submit();'>\n");
846		for_each_branch_ref(print_branch_option, ctx->qry.head);
847		html("</select> ");
848		html("<input type='submit' name='' value='switch'/>");
849		html("</form>");
850	} else
851		html_txt(ctx->cfg.root_title);
852	html("</td></tr>\n");
853
854	html("<tr><td class='sub'>");
855	if (ctx->repo) {
856		html_txt(ctx->repo->desc);
857		html("</td><td class='sub right'>");
858		html_txt(ctx->repo->owner);
859	} else {
860		if (ctx->cfg.root_desc)
861			html_txt(ctx->cfg.root_desc);
862		else if (ctx->cfg.index_info)
863			html_include(ctx->cfg.index_info);
864	}
865	html("</td></tr></table>\n");
866}
867
868void cgit_print_pageheader(struct cgit_context *ctx)
869{
870	html("<div id='cgit'>");
871	if (!ctx->cfg.noheader)
872		print_header(ctx);
873
874	html("<table class='tabs'><tr><td>\n");
875	if (ctx->repo) {
876		cgit_summary_link("summary", NULL, hc(ctx, "summary"),
877				  ctx->qry.head);
878		cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
879			       ctx->qry.sha1, NULL);
880		cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
881			      NULL, ctx->qry.vpath, 0, NULL, NULL,
882			      ctx->qry.showmsg);
883		cgit_tree_link("tree", NULL, hc(ctx, "tree"), ctx->qry.head,
884			       ctx->qry.sha1, ctx->qry.vpath);
885		cgit_commit_link("commit", NULL, hc(ctx, "commit"),
886				 ctx->qry.head, ctx->qry.sha1, ctx->qry.vpath, 0);
887		cgit_diff_link("diff", NULL, hc(ctx, "diff"), ctx->qry.head,
888			       ctx->qry.sha1, ctx->qry.sha2, ctx->qry.vpath, 0);
889		if (ctx->repo->max_stats)
890			cgit_stats_link("stats", NULL, hc(ctx, "stats"),
891					ctx->qry.head, ctx->qry.vpath);
892		if (ctx->repo->readme)
893			reporevlink("about", "about", NULL,
894				    hc(ctx, "about"), ctx->qry.head, NULL,
895				    NULL);
896		html("</td><td class='form'>");
897		html("<form class='right' method='get' action='");
898		if (ctx->cfg.virtual_root)
899			html_url_path(cgit_fileurl(ctx->qry.repo, "log",
900						   ctx->qry.vpath, NULL));
901		html("'>\n");
902		cgit_add_hidden_formfields(1, 0, "log");
903		html("<select name='qt'>\n");
904		html_option("grep", "log msg", ctx->qry.grep);
905		html_option("author", "author", ctx->qry.grep);
906		html_option("committer", "committer", ctx->qry.grep);
907		html_option("range", "range", ctx->qry.grep);
908		html("</select>\n");
909		html("<input class='txt' type='text' size='10' name='q' value='");
910		html_attr(ctx->qry.search);
911		html("'/>\n");
912		html("<input type='submit' value='search'/>\n");
913		html("</form>\n");
914	} else {
915		site_link(NULL, "index", NULL, hc(ctx, "repolist"), NULL, NULL, 0);
916		if (ctx->cfg.root_readme)
917			site_link("about", "about", NULL, hc(ctx, "about"),
918				  NULL, NULL, 0);
919		html("</td><td class='form'>");
920		html("<form method='get' action='");
921		html_attr(cgit_rooturl());
922		html("'>\n");
923		html("<input type='text' name='q' size='10' value='");
924		html_attr(ctx->qry.search);
925		html("'/>\n");
926		html("<input type='submit' value='search'/>\n");
927		html("</form>");
928	}
929	html("</td></tr></table>\n");
930	if (ctx->qry.vpath) {
931		html("<div class='path'>");
932		html("path: ");
933		cgit_print_path_crumbs(ctx, ctx->qry.vpath);
934		html("</div>");
935	}
936	html("<div class='content'>");
937}
938
939void cgit_print_filemode(unsigned short mode)
940{
941	if (S_ISDIR(mode))
942		html("d");
943	else if (S_ISLNK(mode))
944		html("l");
945	else if (S_ISGITLINK(mode))
946		html("m");
947	else
948		html("-");
949	html_fileperm(mode >> 6);
950	html_fileperm(mode >> 3);
951	html_fileperm(mode);
952}
953
954void cgit_print_snapshot_links(const char *repo, const char *head,
955			       const char *hex, int snapshots)
956{
957	const struct cgit_snapshot_format* f;
958	char *prefix;
959	char *filename;
960	unsigned char sha1[20];
961
962	if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
963	    (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
964		hex++;
965	prefix = xstrdup(fmt("%s-%s", cgit_repobasename(repo), hex));
966	for (f = cgit_snapshot_formats; f->suffix; f++) {
967		if (!(snapshots & f->bit))
968			continue;
969		filename = fmt("%s%s", prefix, f->suffix);
970		cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
971		html("<br/>");
972	}
973}