Add ui-shared.h

This is finally a proper headerfile for the shared ui-functions which
used to reside in cgit.h

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

13 files changed, 47 insertions, 32 deletions

diff --git a/cgit.c b/cgit.c
index 79e0e43..dbb023e 100644
--- a/cgit.c
+++ b/cgit.c
@@ -1,266 +1,267 @@
 /* cgit.c: cgi for the git scm
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "cmd.h"
+#include "ui-shared.h"
 
 static int cgit_prepare_cache(struct cacheitem *item)
 {
 	if (!ctx.repo && ctx.qry.repo) {
 		ctx.page.title = fmt("%s - %s", ctx.cfg.root_title,
 				      "Bad request");
 		cgit_print_http_headers(&ctx);
 		cgit_print_docstart(&ctx);
 		cgit_print_pageheader(&ctx);
 		cgit_print_error(fmt("Unknown repo: %s", ctx.qry.repo));
 		cgit_print_docend();
 		return 0;
 	}
 
 	if (!ctx.repo) {
 		item->name = xstrdup(fmt("%s/index.html", ctx.cfg.cache_root));
 		item->ttl = ctx.cfg.cache_root_ttl;
 		return 1;
 	}
 
 	if (!cgit_cmd) {
 		item->name = xstrdup(fmt("%s/%s/index.%s.html", ctx.cfg.cache_root,
 					 cache_safe_filename(ctx.repo->url),
 					 cache_safe_filename(ctx.qry.raw)));
 		item->ttl = ctx.cfg.cache_repo_ttl;
 	} else {
 		item->name = xstrdup(fmt("%s/%s/%s/%s.html", ctx.cfg.cache_root,
 					 cache_safe_filename(ctx.repo->url),
 					 ctx.qry.page,
 					 cache_safe_filename(ctx.qry.raw)));
 		if (ctx.qry.has_symref)
 			item->ttl = ctx.cfg.cache_dynamic_ttl;
 		else if (ctx.qry.has_sha1)
 			item->ttl = ctx.cfg.cache_static_ttl;
 		else
 			item->ttl = ctx.cfg.cache_repo_ttl;
 	}
 	return 1;
 }
 
 struct refmatch {
 	char *req_ref;
 	char *first_ref;
 	int match;
 };
 
 int find_current_ref(const char *refname, const unsigned char *sha1,
 		     int flags, void *cb_data)
 {
 	struct refmatch *info;
 
 	info = (struct refmatch *)cb_data;
 	if (!strcmp(refname, info->req_ref))
 		info->match = 1;
 	if (!info->first_ref)
 		info->first_ref = xstrdup(refname);
 	return info->match;
 }
 
 char *find_default_branch(struct cgit_repo *repo)
 {
 	struct refmatch info;
 
 	info.req_ref = repo->defbranch;
 	info.first_ref = NULL;
 	info.match = 0;
 	for_each_branch_ref(find_current_ref, &info);
 	if (info.match)
 		return info.req_ref;
 	else
 		return info.first_ref;
 }
 
 static int prepare_repo_cmd(struct cgit_context *ctx)
 {
 	char *tmp;
 	unsigned char sha1[20];
 	int nongit = 0;
 
 	setenv("GIT_DIR", ctx->repo->path, 1);
 	setup_git_directory_gently(&nongit);
 	if (nongit) {
 		ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
 				      "config error");
 		tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
 		ctx->repo = NULL;
 		cgit_print_http_headers(ctx);
 		cgit_print_docstart(ctx);
 		cgit_print_pageheader(ctx);
 		cgit_print_error(tmp);
 		cgit_print_docend();
 		return 1;
 	}
 	ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
 
 	if (!ctx->qry.head) {
 		ctx->qry.head = xstrdup(find_default_branch(ctx->repo));
 		ctx->repo->defbranch = ctx->qry.head;
 	}
 
 	if (!ctx->qry.head) {
 		cgit_print_http_headers(ctx);
 		cgit_print_docstart(ctx);
 		cgit_print_pageheader(ctx);
 		cgit_print_error("Repository seems to be empty");
 		cgit_print_docend();
 		return 1;
 	}
 
 	if (get_sha1(ctx->qry.head, sha1)) {
 		tmp = xstrdup(ctx->qry.head);
 		ctx->qry.head = ctx->repo->defbranch;
 		cgit_print_http_headers(ctx);
 		cgit_print_docstart(ctx);
 		cgit_print_pageheader(ctx);
 		cgit_print_error(fmt("Invalid branch: %s", tmp));
 		cgit_print_docend();
 		return 1;
 	}
 	return 0;
 }
 
 static void process_request(struct cgit_context *ctx)
 {
 	struct cgit_cmd *cmd;
 
 	cmd = cgit_get_cmd(ctx);
 	if (!cmd) {
 		ctx->page.title = "cgit error";
 		ctx->repo = NULL;
 		cgit_print_http_headers(ctx);
 		cgit_print_docstart(ctx);
 		cgit_print_pageheader(ctx);
 		cgit_print_error("Invalid request");
 		cgit_print_docend();
 		return;
 	}
 
 	if (cmd->want_repo && prepare_repo_cmd(ctx))
 		return;
 
 	if (cmd->want_layout) {
 		cgit_print_http_headers(ctx);
 		cgit_print_docstart(ctx);
 		cgit_print_pageheader(ctx);
 	}
 
 	cmd->fn(ctx);
 
 	if (cmd->want_layout)
 		cgit_print_docend();
 }
 
 static long ttl_seconds(long ttl)
 {
 	if (ttl<0)
 		return 60 * 60 * 24 * 365;
 	else
 		return ttl * 60;
 }
 
 static void cgit_fill_cache(struct cacheitem *item, int use_cache)
 {
 	int stdout2;
 
 	if (use_cache) {
 		stdout2 = chk_positive(dup(STDOUT_FILENO),
 				       "Preserving STDOUT");
 		chk_zero(close(STDOUT_FILENO), "Closing STDOUT");
 		chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
 	}
 
 	ctx.page.modified = time(NULL);
 	ctx.page.expires = ctx.page.modified + ttl_seconds(item->ttl);
 	process_request(&ctx);
 
 	if (use_cache) {
 		chk_zero(close(STDOUT_FILENO), "Close redirected STDOUT");
 		chk_positive(dup2(stdout2, STDOUT_FILENO),
 			     "Restoring original STDOUT");
 		chk_zero(close(stdout2), "Closing temporary STDOUT");
 	}
 }
 
 static void cgit_check_cache(struct cacheitem *item)
 {
 	int i = 0;
 
  top:
 	if (++i > ctx.cfg.max_lock_attempts) {
 		die("cgit_refresh_cache: unable to lock %s: %s",
 		    item->name, strerror(errno));
 	}
 	if (!cache_exist(item)) {
 		if (!cache_lock(item)) {
 			sleep(1);
 			goto top;
 		}
 		if (!cache_exist(item)) {
 			cgit_fill_cache(item, 1);
 			cache_unlock(item);
 		} else {
 			cache_cancel_lock(item);
 		}
 	} else if (cache_expired(item) && cache_lock(item)) {
 		if (cache_expired(item)) {
 			cgit_fill_cache(item, 1);
 			cache_unlock(item);
 		} else {
 			cache_cancel_lock(item);
 		}
 	}
 }
 
 static void cgit_print_cache(struct cacheitem *item)
 {
 	static char buf[4096];
 	ssize_t i;
 
 	int fd = open(item->name, O_RDONLY);
 	if (fd<0)
 		die("Unable to open cached file %s", item->name);
 
 	while((i=read(fd, buf, sizeof(buf))) > 0)
 		write(STDOUT_FILENO, buf, i);
 
 	close(fd);
 }
 
 static void cgit_parse_args(int argc, const char **argv)
 {
 	int i;
 
 	for (i = 1; i < argc; i++) {
 		if (!strncmp(argv[i], "--cache=", 8)) {
 			ctx.cfg.cache_root = xstrdup(argv[i]+8);
 		}
 		if (!strcmp(argv[i], "--nocache")) {
 			ctx.cfg.nocache = 1;
 		}
 		if (!strncmp(argv[i], "--query=", 8)) {
 			ctx.qry.raw = xstrdup(argv[i]+8);
 		}
 		if (!strncmp(argv[i], "--repo=", 7)) {
 			ctx.qry.repo = xstrdup(argv[i]+7);
 		}
 		if (!strncmp(argv[i], "--page=", 7)) {
 			ctx.qry.page = xstrdup(argv[i]+7);
 		}
 		if (!strncmp(argv[i], "--head=", 7)) {
 			ctx.qry.head = xstrdup(argv[i]+7);
 			ctx.qry.has_symref = 1;
 		}
 		if (!strncmp(argv[i], "--sha1=", 7)) {
 			ctx.qry.sha1 = xstrdup(argv[i]+7);
 			ctx.qry.has_sha1 = 1;
diff --git a/cgit.h b/cgit.h
index 1b23369..c1a231d 100644
--- a/cgit.h
+++ b/cgit.h
@@ -1,276 +1,244 @@
 #ifndef CGIT_H
 #define CGIT_H
 
 
 #include <git-compat-util.h>
 #include <cache.h>
 #include <grep.h>
 #include <object.h>
 #include <tree.h>
 #include <commit.h>
 #include <tag.h>
 #include <diff.h>
 #include <diffcore.h>
 #include <refs.h>
 #include <revision.h>
 #include <log-tree.h>
 #include <archive.h>
 #include <xdiff/xdiff.h>
 #include <utf8.h>
 
 
 /*
  * Dateformats used on misc. pages
  */
 #define FMT_LONGDATE "%Y-%m-%d %H:%M:%S"
 #define FMT_SHORTDATE "%Y-%m-%d"
 
 
 /*
  * Limits used for relative dates
  */
 #define TM_MIN    60
 #define TM_HOUR  (TM_MIN * 60)
 #define TM_DAY   (TM_HOUR * 24)
 #define TM_WEEK  (TM_DAY * 7)
 #define TM_YEAR  (TM_DAY * 365)
 #define TM_MONTH (TM_YEAR / 12.0)
 
 
 /*
  * Default encoding
  */
 #define PAGE_ENCODING "UTF-8"
 
 typedef void (*configfn)(const char *name, const char *value);
 typedef void (*filepair_fn)(struct diff_filepair *pair);
 typedef void (*linediff_fn)(char *line, int len);
 
 struct cacheitem {
 	char *name;
 	struct stat st;
 	int ttl;
 	int fd;
 };
 
 struct cgit_repo {
 	char *url;
 	char *name;
 	char *path;
 	char *desc;
 	char *owner;
 	char *defbranch;
 	char *group;
 	char *module_link;
 	char *readme;
 	char *clone_url;
 	int snapshots;
 	int enable_log_filecount;
 	int enable_log_linecount;
 };
 
 struct cgit_repolist {
 	int length;
 	int count;
 	struct cgit_repo *repos;
 };
 
 struct commitinfo {
 	struct commit *commit;
 	char *author;
 	char *author_email;
 	unsigned long author_date;
 	char *committer;
 	char *committer_email;
 	unsigned long committer_date;
 	char *subject;
 	char *msg;
 	char *msg_encoding;
 };
 
 struct taginfo {
 	char *tagger;
 	char *tagger_email;
 	int tagger_date;
 	char *msg;
 };
 
 struct refinfo {
 	const char *refname;
 	struct object *object;
 	union {
 		struct taginfo *tag;
 		struct commitinfo *commit;
 	};
 };
 
 struct reflist {
 	struct refinfo **refs;
 	int alloc;
 	int count;
 };
 
 struct cgit_query {
 	int has_symref;
 	int has_sha1;
 	char *raw;
 	char *repo;
 	char *page;
 	char *search;
 	char *grep;
 	char *head;
 	char *sha1;
 	char *sha2;
 	char *path;
 	char *name;
 	int   ofs;
 };
 
 struct cgit_config {
 	char *agefile;
 	char *cache_root;
 	char *clone_prefix;
 	char *css;
 	char *index_header;
 	char *index_info;
 	char *logo;
 	char *logo_link;
 	char *module_link;
 	char *repo_group;
 	char *robots;
 	char *root_title;
 	char *script_name;
 	char *virtual_root;
 	int cache_dynamic_ttl;
 	int cache_max_create_time;
 	int cache_repo_ttl;
 	int cache_root_ttl;
 	int cache_static_ttl;
 	int enable_index_links;
 	int enable_log_filecount;
 	int enable_log_linecount;
 	int max_commit_count;
 	int max_lock_attempts;
 	int max_msg_len;
 	int max_repodesc_len;
 	int nocache;
 	int renamelimit;
 	int snapshots;
 	int summary_branches;
 	int summary_log;
 	int summary_tags;
 };
 
 struct cgit_page {
 	time_t modified;
 	time_t expires;
 	char *mimetype;
 	char *charset;
 	char *filename;
 	char *title;
 };
 
 struct cgit_context {
 	struct cgit_query qry;
 	struct cgit_config cfg;
 	struct cgit_repo *repo;
 	struct cgit_page page;
 };
 
 struct cgit_snapshot_format {
 	const char *suffix;
 	const char *mimetype;
 	write_archive_fn_t write_func;
 	int bit;
 };
 
 extern const char *cgit_version;
 
 extern struct cgit_repolist cgit_repolist;
 extern struct cgit_context ctx;
 extern const struct cgit_snapshot_format cgit_snapshot_formats[];
 extern int cgit_cmd;
 
 extern void cgit_prepare_context(struct cgit_context *ctx);
 extern struct cgit_repo *cgit_get_repoinfo(const char *url);
 extern void cgit_global_config_cb(const char *name, const char *value);
 extern void cgit_repo_config_cb(const char *name, const char *value);
 extern void cgit_querystring_cb(const char *name, const char *value);
 
 extern int chk_zero(int result, char *msg);
 extern int chk_positive(int result, char *msg);
 extern int chk_non_negative(int result, char *msg);
 
 extern int hextoint(char c);
 extern char *trim_end(const char *str, char c);
 extern char *strlpart(char *txt, int maxlen);
 extern char *strrpart(char *txt, int maxlen);
 
 extern void cgit_add_ref(struct reflist *list, struct refinfo *ref);
 extern int cgit_refs_cb(const char *refname, const unsigned char *sha1,
 			int flags, void *cb_data);
 
 extern void *cgit_free_commitinfo(struct commitinfo *info);
 
 extern int cgit_diff_files(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,
 			   linediff_fn fn);
 
 extern void cgit_diff_tree(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,
 			   filepair_fn fn, const char *prefix);
 
 extern void cgit_diff_commit(struct commit *commit, filepair_fn fn);
 
 extern char *fmt(const char *format,...);
 
 extern int cgit_read_config(const char *filename, configfn fn);
 extern int cgit_parse_query(char *txt, configfn fn);
 extern struct commitinfo *cgit_parse_commit(struct commit *commit);
 extern struct taginfo *cgit_parse_tag(struct tag *tag);
 extern void cgit_parse_url(const char *url);
 
 extern char *cache_safe_filename(const char *unsafe);
 extern int cache_lock(struct cacheitem *item);
 extern int cache_unlock(struct cacheitem *item);
 extern int cache_cancel_lock(struct cacheitem *item);
 extern int cache_exist(struct cacheitem *item);
 extern int cache_expired(struct cacheitem *item);
 
-extern char *cgit_repourl(const char *reponame);
-extern char *cgit_fileurl(const char *reponame, const char *pagename,
-			  const char *filename, const char *query);
-extern char *cgit_pageurl(const char *reponame, const char *pagename,
-			  const char *query);
-
 extern const char *cgit_repobasename(const char *reponame);
 
-extern void cgit_tree_link(char *name, char *title, char *class, char *head,
-			   char *rev, char *path);
-extern void cgit_log_link(char *name, char *title, char *class, char *head,
-			  char *rev, char *path, int ofs, char *grep,
-			  char *pattern);
-extern void cgit_commit_link(char *name, char *title, char *class, char *head,
-			     char *rev);
-extern void cgit_refs_link(char *name, char *title, char *class, char *head,
-			   char *rev, char *path);
-extern void cgit_snapshot_link(char *name, char *title, char *class,
-			       char *head, char *rev, char *archivename);
-extern void cgit_diff_link(char *name, char *title, char *class, char *head,
-			   char *new_rev, char *old_rev, char *path);
-
-extern void cgit_object_link(struct object *obj);
-
-extern void cgit_print_error(char *msg);
-extern void cgit_print_date(time_t secs, char *format);
-extern void cgit_print_age(time_t t, time_t max_relative, char *format);
-extern void cgit_print_http_headers(struct cgit_context *ctx);
-extern void cgit_print_docstart(struct cgit_context *ctx);
-extern void cgit_print_docend();
-extern void cgit_print_pageheader(struct cgit_context *ctx);
-extern void cgit_print_filemode(unsigned short mode);
-extern void cgit_print_snapshot_links(const char *repo, const char *head,
-				      const char *hex, int snapshots);
 extern int cgit_parse_snapshots_mask(const char *str);
 
 #endif /* CGIT_H */
diff --git a/ui-blob.c b/ui-blob.c
index 3b29132..11589db 100644
--- a/ui-blob.c
+++ b/ui-blob.c
@@ -1,42 +1,43 @@
 /* ui-blob.c: show blob content
  *
  * Copyright (C) 2008 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 void cgit_print_blob(const char *hex, char *path)
 {
 
 	unsigned char sha1[20];
 	enum object_type type;
 	unsigned char *buf;
 	unsigned long size;
 
 	if (get_sha1_hex(hex, sha1)){
 		cgit_print_error(fmt("Bad hex value: %s", hex));
 	        return;
 	}
 
 	type = sha1_object_info(sha1, &size);
 	if (type == OBJ_BAD) {
 		cgit_print_error(fmt("Bad object name: %s", hex));
 		return;
 	}
 
 	buf = read_sha1_file(sha1, &type, &size);
 	if (!buf) {
 		cgit_print_error(fmt("Error reading object %s", hex));
 		return;
 	}
 
 	buf[size] = '\0';
 	ctx.page.mimetype = "text/plain";
 	ctx.page.filename = path;
 	cgit_print_http_headers(&ctx);
 	write(htmlfd, buf, size);
 }
diff --git a/ui-commit.c b/ui-commit.c
index ed25824..8019e36 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -1,227 +1,228 @@
 /* ui-commit.c: generate commit view
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 static int files, slots;
 static int total_adds, total_rems, max_changes;
 static int lines_added, lines_removed;
 static char *curr_rev;
 
 static struct fileinfo {
 	char status;
 	unsigned char old_sha1[20];
 	unsigned char new_sha1[20];
 	unsigned short old_mode;
 	unsigned short new_mode;
 	char *old_path;
 	char *new_path;
 	unsigned int added;
 	unsigned int removed;
 } *items;
 
 
 void print_fileinfo(struct fileinfo *info)
 {
 	char *class;
 
 	switch (info->status) {
 	case DIFF_STATUS_ADDED:
 		class = "add";
 		break;
 	case DIFF_STATUS_COPIED:
 		class = "cpy";
 		break;
 	case DIFF_STATUS_DELETED:
 		class = "del";
 		break;
 	case DIFF_STATUS_MODIFIED:
 		class = "upd";
 		break;
 	case DIFF_STATUS_RENAMED:
 		class = "mov";
 		break;
 	case DIFF_STATUS_TYPE_CHANGED:
 		class = "typ";
 		break;
 	case DIFF_STATUS_UNKNOWN:
 		class = "unk";
 		break;
 	case DIFF_STATUS_UNMERGED:
 		class = "stg";
 		break;
 	default:
 		die("bug: unhandled diff status %c", info->status);
 	}
 
 	html("<tr>");
 	htmlf("<td class='mode'>");
 	if (is_null_sha1(info->new_sha1)) {
 		cgit_print_filemode(info->old_mode);
 	} else {
 		cgit_print_filemode(info->new_mode);
 	}
 
 	if (info->old_mode != info->new_mode &&
 	    !is_null_sha1(info->old_sha1) &&
 	    !is_null_sha1(info->new_sha1)) {
 		html("<span class='modechange'>[");
 		cgit_print_filemode(info->old_mode);
 		html("]</span>");
 	}
 	htmlf("</td><td class='%s'>", class);
 	cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, curr_rev,
 		       NULL, info->new_path);
 	if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED)
 		htmlf(" (%s from %s)",
 		      info->status == DIFF_STATUS_COPIED ? "copied" : "renamed",
 		      info->old_path);
 	html("</td><td class='right'>");
 	htmlf("%d", info->added + info->removed);
 	html("</td><td class='graph'>");
 	htmlf("<table summary='file diffstat' width='%d%%'><tr>", (max_changes > 100 ? 100 : max_changes));
 	htmlf("<td class='add' style='width: %.1f%%;'/>",
 	      info->added * 100.0 / max_changes);
 	htmlf("<td class='rem' style='width: %.1f%%;'/>",
 	      info->removed * 100.0 / max_changes);
 	htmlf("<td class='none' style='width: %.1f%%;'/>",
 	      (max_changes - info->removed - info->added) * 100.0 / max_changes);
 	html("</tr></table></td></tr>\n");
 }
 
 void cgit_count_diff_lines(char *line, int len)
 {
 	if (line && (len > 0)) {
 		if (line[0] == '+')
 			lines_added++;
 		else if (line[0] == '-')
 			lines_removed++;
 	}
 }
 
 void inspect_filepair(struct diff_filepair *pair)
 {
 	files++;
 	lines_added = 0;
 	lines_removed = 0;
 	cgit_diff_files(pair->one->sha1, pair->two->sha1, cgit_count_diff_lines);
 	if (files >= slots) {
 		if (slots == 0)
 			slots = 4;
 		else
 			slots = slots * 2;
 		items = xrealloc(items, slots * sizeof(struct fileinfo));
 	}
 	items[files-1].status = pair->status;
 	hashcpy(items[files-1].old_sha1, pair->one->sha1);
 	hashcpy(items[files-1].new_sha1, pair->two->sha1);
 	items[files-1].old_mode = pair->one->mode;
 	items[files-1].new_mode = pair->two->mode;
 	items[files-1].old_path = xstrdup(pair->one->path);
 	items[files-1].new_path = xstrdup(pair->two->path);
 	items[files-1].added = lines_added;
 	items[files-1].removed = lines_removed;
 	if (lines_added + lines_removed > max_changes)
 		max_changes = lines_added + lines_removed;
 	total_adds += lines_added;
 	total_rems += lines_removed;
 }
 
 
 void cgit_print_commit(char *hex)
 {
 	struct commit *commit, *parent;
 	struct commitinfo *info;
 	struct commit_list *p;
 	unsigned char sha1[20];
 	char *tmp;
 	int i;
 
 	if (!hex)
 		hex = ctx.qry.head;
 	curr_rev = hex;
 
 	if (get_sha1(hex, sha1)) {
 		cgit_print_error(fmt("Bad object id: %s", hex));
 		return;
 	}
 	commit = lookup_commit_reference(sha1);
 	if (!commit) {
 		cgit_print_error(fmt("Bad commit reference: %s", hex));
 		return;
 	}
 	info = cgit_parse_commit(commit);
 
 	html("<table summary='commit info' class='commit-info'>\n");
 	html("<tr><th>author</th><td>");
 	html_txt(info->author);
 	html(" ");
 	html_txt(info->author_email);
 	html("</td><td class='right'>");
 	cgit_print_date(info->author_date, FMT_LONGDATE);
 	html("</td></tr>\n");
 	html("<tr><th>committer</th><td>");
 	html_txt(info->committer);
 	html(" ");
 	html_txt(info->committer_email);
 	html("</td><td class='right'>");
 	cgit_print_date(info->committer_date, FMT_LONGDATE);
 	html("</td></tr>\n");
 	html("<tr><th>tree</th><td colspan='2' class='sha1'>");
 	tmp = xstrdup(hex);
 	cgit_tree_link(sha1_to_hex(commit->tree->object.sha1), NULL, NULL,
 		       ctx.qry.head, tmp, NULL);
 	html("</td></tr>\n");
       	for (p = commit->parents; p ; p = p->next) {
 		parent = lookup_commit_reference(p->item->object.sha1);
 		if (!parent) {
 			html("<tr><td colspan='3'>");
 			cgit_print_error("Error reading parent commit");
 			html("</td></tr>");
 			continue;
 		}
 		html("<tr><th>parent</th>"
 		     "<td colspan='2' class='sha1'>");
 		cgit_commit_link(sha1_to_hex(p->item->object.sha1), NULL, NULL,
 				 ctx.qry.head, sha1_to_hex(p->item->object.sha1));
 		html(" (");
 		cgit_diff_link("diff", NULL, NULL, ctx.qry.head, hex,
 			       sha1_to_hex(p->item->object.sha1), NULL);
 		html(")</td></tr>");
 	}
 	if (ctx.repo->snapshots) {
 		html("<tr><th>download</th><td colspan='2' class='sha1'>");
 		cgit_print_snapshot_links(ctx.qry.repo, ctx.qry.head,
 					  hex, ctx.repo->snapshots);
 		html("</td></tr>");
 	}
 	html("</table>\n");
 	html("<div class='commit-subject'>");
 	html_txt(info->subject);
 	html("</div>");
 	html("<div class='commit-msg'>");
 	html_txt(info->msg);
 	html("</div>");
 	if (!(commit->parents && commit->parents->next && commit->parents->next->next)) {
 		html("<div class='diffstat-header'>Diffstat</div>");
 		html("<table summary='diffstat' class='diffstat'>");
 		max_changes = 0;
 		cgit_diff_commit(commit, inspect_filepair);
 		for(i = 0; i<files; i++)
 			print_fileinfo(&items[i]);
 		html("</table>");
 		html("<div class='diffstat-summary'>");
 		htmlf("%d files changed, %d insertions, %d deletions (",
 		      files, total_adds, total_rems);
 		cgit_diff_link("show diff", NULL, NULL, ctx.qry.head, hex,
 			       NULL, NULL);
 		html(")</div>");
 	}
 	cgit_free_commitinfo(info);
 }
diff --git a/ui-diff.c b/ui-diff.c
index 5c3bc98..2a22009 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -1,149 +1,150 @@
 /* ui-diff.c: show diff between two blobs
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 unsigned char old_rev_sha1[20];
 unsigned char new_rev_sha1[20];
 
 /*
  * print a single line returned from xdiff
  */
 static void print_line(char *line, int len)
 {
 	char *class = "ctx";
 	char c = line[len-1];
 
 	if (line[0] == '+')
 		class = "add";
 	else if (line[0] == '-')
 		class = "del";
 	else if (line[0] == '@')
 		class = "hunk";
 
 	htmlf("<div class='%s'>", class);
 	line[len-1] = '\0';
 	html_txt(line);
 	html("</div>");
 	line[len-1] = c;
 }
 
 static void header(unsigned char *sha1, char *path1, int mode1,
 		   unsigned char *sha2, char *path2, int mode2)
 {
 	char *abbrev1, *abbrev2;
 	int subproject;
 
 	subproject = (S_ISGITLINK(mode1) || S_ISGITLINK(mode2));
 	html("<div class='head'>");
 	html("diff --git a/");
 	html_txt(path1);
 	html(" b/");
 	html_txt(path2);
 
 	if (is_null_sha1(sha1))
 		path1 = "dev/null";
 	if (is_null_sha1(sha2))
 		path2 = "dev/null";
 
 	if (mode1 == 0)
 		htmlf("<br/>new file mode %.6o", mode2);
 
 	if (mode2 == 0)
 		htmlf("<br/>deleted file mode %.6o", mode1);
 
 	if (!subproject) {
 		abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
 		abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
 		htmlf("<br/>index %s..%s", abbrev1, abbrev2);
 		free(abbrev1);
 		free(abbrev2);
 		if (mode1 != 0 && mode2 != 0) {
 			htmlf(" %.6o", mode1);
 			if (mode2 != mode1)
 				htmlf("..%.6o", mode2);
 		}
 		html("<br/>--- a/");
 		if (mode1 != 0)
 			cgit_tree_link(path1, NULL, NULL, ctx.qry.head,
 				       sha1_to_hex(old_rev_sha1), path1);
 		else
 			html_txt(path1);
 		html("<br/>+++ b/");
 		if (mode2 != 0)
 			cgit_tree_link(path2, NULL, NULL, ctx.qry.head,
 				       sha1_to_hex(new_rev_sha1), path2);
 		else
 			html_txt(path2);
 	}
 	html("</div>");
 }
 
 static void filepair_cb(struct diff_filepair *pair)
 {
 	header(pair->one->sha1, pair->one->path, pair->one->mode,
 	       pair->two->sha1, pair->two->path, pair->two->mode);
 	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
 		if (S_ISGITLINK(pair->one->mode))
 			print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
 		if (S_ISGITLINK(pair->two->mode))
 			print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
 		return;
 	}
 	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, print_line))
 		cgit_print_error("Error running diff");
 }
 
 void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefix)
 {
 	enum object_type type;
 	unsigned long size;
 	struct commit *commit, *commit2;
 
 	if (!new_rev)
 		new_rev = ctx.qry.head;
 	get_sha1(new_rev, new_rev_sha1);
 	type = sha1_object_info(new_rev_sha1, &size);
 	if (type == OBJ_BAD) {
 		cgit_print_error(fmt("Bad object name: %s", new_rev));
 		return;
 	}
 	if (type != OBJ_COMMIT) {
 		cgit_print_error(fmt("Unhandled object type: %s",
 				     typename(type)));
 		return;
 	}
 
 	commit = lookup_commit_reference(new_rev_sha1);
 	if (!commit || parse_commit(commit))
 		cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(new_rev_sha1)));
 
 	if (old_rev)
 		get_sha1(old_rev, old_rev_sha1);
 	else if (commit->parents && commit->parents->item)
 		hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
 	else
 		hashclr(old_rev_sha1);
 
 	if (!is_null_sha1(old_rev_sha1)) {
 		type = sha1_object_info(old_rev_sha1, &size);
 		if (type == OBJ_BAD) {
 			cgit_print_error(fmt("Bad object name: %s", sha1_to_hex(old_rev_sha1)));
 			return;
 		}
 		commit2 = lookup_commit_reference(old_rev_sha1);
 		if (!commit2 || parse_commit(commit2))
 			cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(old_rev_sha1)));
 	}
 	html("<table summary='diff' class='diff'>");
 	html("<tr><td>");
 	cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix);
 	html("</td></tr>");
 	html("</table>");
 }
diff --git a/ui-log.c b/ui-log.c
index e1d324d..60c9269 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -1,141 +1,142 @@
 /* ui-log.c: functions for log output
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 int files, add_lines, rem_lines;
 
 void count_lines(char *line, int size)
 {
 	if (size <= 0)
 		return;
 
 	if (line[0] == '+')
 		add_lines++;
 
 	else if (line[0] == '-')
 		rem_lines++;
 }
 
 void inspect_files(struct diff_filepair *pair)
 {
 	files++;
 	if (ctx.repo->enable_log_linecount)
 		cgit_diff_files(pair->one->sha1, pair->two->sha1, count_lines);
 }
 
 void print_commit(struct commit *commit)
 {
 	struct commitinfo *info;
 
 	info = cgit_parse_commit(commit);
 	html("<tr><td>");
 	cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
 	html("</td><td>");
 	cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
 			 sha1_to_hex(commit->object.sha1));
 	if (ctx.repo->enable_log_filecount) {
 		files = 0;
 		add_lines = 0;
 		rem_lines = 0;
 		cgit_diff_commit(commit, inspect_files);
 		html("</td><td class='right'>");
 		htmlf("%d", files);
 		if (ctx.repo->enable_log_linecount) {
 			html("</td><td class='right'>");
 			htmlf("-%d/+%d", rem_lines, add_lines);
 		}
 	}
 	html("</td><td>");
 	html_txt(info->author);
 	html("</td></tr>\n");
 	cgit_free_commitinfo(info);
 }
 
 
 void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern, char *path, int pager)
 {
 	struct rev_info rev;
 	struct commit *commit;
 	const char *argv[] = {NULL, tip, NULL, NULL, NULL};
 	int argc = 2;
 	int i;
 
 	if (!tip)
 		argv[1] = ctx.qry.head;
 
 	if (grep && pattern && (!strcmp(grep, "grep") ||
 				!strcmp(grep, "author") ||
 				!strcmp(grep, "committer")))
 		argv[argc++] = fmt("--%s=%s", grep, pattern);
 
 	if (path) {
 		argv[argc++] = "--";
 		argv[argc++] = path;
 	}
 	init_revisions(&rev, NULL);
 	rev.abbrev = DEFAULT_ABBREV;
 	rev.commit_format = CMIT_FMT_DEFAULT;
 	rev.verbose_header = 1;
 	rev.show_root_diff = 0;
 	setup_revisions(argc, argv, &rev, NULL);
 	if (rev.grep_filter) {
 		rev.grep_filter->regflags |= REG_ICASE;
 		compile_grep_patterns(rev.grep_filter);
 	}
 	prepare_revision_walk(&rev);
 
 	html("<table summary='log' class='list nowrap'>");
 	html("<tr class='nohover'><th class='left'>Age</th>"
 	     "<th class='left'>Message</th>");
 
 	if (ctx.repo->enable_log_filecount) {
 		html("<th class='right'>Files</th>");
 		if (ctx.repo->enable_log_linecount)
 			html("<th class='right'>Lines</th>");
 	}
 	html("<th class='left'>Author</th></tr>\n");
 
 	if (ofs<0)
 		ofs = 0;
 
 	for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; i++) {
 		free(commit->buffer);
 		commit->buffer = NULL;
 		free_commit_list(commit->parents);
 		commit->parents = NULL;
 	}
 
 	for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
 		print_commit(commit);
 		free(commit->buffer);
 		commit->buffer = NULL;
 		free_commit_list(commit->parents);
 		commit->parents = NULL;
 	}
 	html("</table>\n");
 
 	if (pager) {
 		html("<div class='pager'>");
 		if (ofs > 0) {
 			cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
 				      ctx.qry.sha1, ctx.qry.path,
 				      ofs - cnt, ctx.qry.grep,
 				      ctx.qry.search);
 			html("&nbsp;");
 		}
 		if ((commit = get_revision(&rev)) != NULL) {
 			cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
 				      ctx.qry.sha1, ctx.qry.path,
 				      ofs + cnt, ctx.qry.grep,
 				      ctx.qry.search);
 		}
 		html("</div>");
 	}
 }
diff --git a/ui-patch.c b/ui-patch.c
index 68ebb15..36bfae4 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -1,113 +1,114 @@
 /* ui-patch.c: generate patch view
  *
  * Copyright (C) 2007 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 static void print_line(char *line, int len)
 {
 	char c = line[len-1];
 
 	line[len-1] = '\0';
 	htmlf("%s\n", line);
 	line[len-1] = c;
 }
 
 static void header(unsigned char *sha1, char *path1, int mode1,
 		   unsigned char *sha2, char *path2, int mode2)
 {
 	char *abbrev1, *abbrev2;
 	int subproject;
 
 	subproject = (S_ISGITLINK(mode1) || S_ISGITLINK(mode2));
 	htmlf("diff --git a/%s b/%s\n", path1, path2);
 
 	if (is_null_sha1(sha1))
 		path1 = "dev/null";
 	if (is_null_sha1(sha2))
 		path2 = "dev/null";
 
 	if (mode1 == 0)
 		htmlf("new file mode %.6o\n", mode2);
 
 	if (mode2 == 0)
 		htmlf("deleted file mode %.6o\n", mode1);
 
 	if (!subproject) {
 		abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
 		abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
 		htmlf("index %s..%s", abbrev1, abbrev2);
 		free(abbrev1);
 		free(abbrev2);
 		if (mode1 != 0 && mode2 != 0) {
 			htmlf(" %.6o", mode1);
 			if (mode2 != mode1)
 				htmlf("..%.6o", mode2);
 		}
 		htmlf("\n--- a/%s\n", path1);
 		htmlf("+++ b/%s\n", path2);
 	}
 }
 
 static void filepair_cb(struct diff_filepair *pair)
 {
 	header(pair->one->sha1, pair->one->path, pair->one->mode,
 	       pair->two->sha1, pair->two->path, pair->two->mode);
 	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
 		if (S_ISGITLINK(pair->one->mode))
 			print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
 		if (S_ISGITLINK(pair->two->mode))
 			print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
 		return;
 	}
 	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, print_line))
 		html("Error running diff");
 }
 
 void cgit_print_patch(char *hex)
 {
 	struct commit *commit;
 	struct commitinfo *info;
 	unsigned char sha1[20], old_sha1[20];
 	char *patchname;
 
 	if (!hex)
 		hex = ctx.qry.head;
 
 	if (get_sha1(hex, sha1)) {
 		cgit_print_error(fmt("Bad object id: %s", hex));
 		return;
 	}
 	commit = lookup_commit_reference(sha1);
 	if (!commit) {
 		cgit_print_error(fmt("Bad commit reference: %s", hex));
 		return;
 	}
 	info = cgit_parse_commit(commit);
 	hashcpy(old_sha1, commit->parents->item->object.sha1);
 
 	patchname = fmt("%s.patch", sha1_to_hex(sha1));
 	ctx.page.mimetype = "text/plain";
 	ctx.page.filename = patchname;
 	cgit_print_http_headers(&ctx);
 	htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));
 	htmlf("From: %s%s\n", info->author, info->author_email);
 	html("Date: ");
 	cgit_print_date(info->author_date, "%a, %d  %b  %Y  %H:%M:%S  %z%n");
 	htmlf("Subject: %s\n\n", info->subject);
 	if (info->msg && *info->msg) {
 		htmlf("%s", info->msg);
 		if (info->msg[strlen(info->msg) - 1] != '\n')
 			html("\n");
 	}
 	html("---\n");
 	cgit_diff_tree(old_sha1, sha1, filepair_cb, NULL);
 	html("--\n");
 	htmlf("cgit %s\n", CGIT_VERSION);
 	cgit_free_commitinfo(info);
 }
diff --git a/ui-refs.c b/ui-refs.c
index fc82ca7..12533cd 100644
--- a/ui-refs.c
+++ b/ui-refs.c
@@ -1,200 +1,201 @@
 /* ui-refs.c: browse symbolic refs
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 static int header;
 
 static int cmp_age(int age1, int age2)
 {
 	if (age1 != 0 && age2 != 0)
 		return age2 - age1;
 
 	if (age1 == 0 && age2 == 0)
 		return 0;
 
 	if (age1 == 0)
 		return +1;
 
 	return -1;
 }
 
 static int cmp_ref_name(const void *a, const void *b)
 {
 	struct refinfo *r1 = *(struct refinfo **)a;
 	struct refinfo *r2 = *(struct refinfo **)b;
 
 	return strcmp(r1->refname, r2->refname);
 }
 
 static int cmp_branch_age(const void *a, const void *b)
 {
 	struct refinfo *r1 = *(struct refinfo **)a;
 	struct refinfo *r2 = *(struct refinfo **)b;
 
 	return cmp_age(r1->commit->committer_date, r2->commit->committer_date);
 }
 
 static int cmp_tag_age(const void *a, const void *b)
 {
 	struct refinfo *r1 = *(struct refinfo **)a;
 	struct refinfo *r2 = *(struct refinfo **)b;
 
 	return cmp_age(r1->tag->tagger_date, r2->tag->tagger_date);
 }
 
 static int print_branch(struct refinfo *ref)
 {
 	struct commitinfo *info = ref->commit;
 	char *name = (char *)ref->refname;
 
 	if (!info)
 		return 1;
 	html("<tr><td>");
 	cgit_log_link(name, NULL, NULL, name, NULL, NULL, 0, NULL, NULL);
 	html("</td><td>");
 
 	if (ref->object->type == OBJ_COMMIT) {
 		cgit_print_age(info->commit->date, -1, NULL);
 		html("</td><td>");
 		html_txt(info->author);
 		html("</td><td>");
 		cgit_commit_link(info->subject, NULL, NULL, name, NULL);
 	} else {
 		html("</td><td></td><td>");
 		cgit_object_link(ref->object);
 	}
 	html("</td></tr>\n");
 	return 0;
 }
 
 static void print_tag_header()
 {
 	html("<tr class='nohover'><th class='left'>Tag</th>"
 	     "<th class='left'>Age</th>"
 	     "<th class='left'>Author</th>"
 	     "<th class='left'>Reference</th></tr>\n");
 	header = 1;
 }
 
 static int print_tag(struct refinfo *ref)
 {
 	struct tag *tag;
 	struct taginfo *info;
 	char *url, *name = (char *)ref->refname;
 
 	if (ref->object->type == OBJ_TAG) {
 		tag = (struct tag *)ref->object;
 		info = ref->tag;
 		if (!tag || !info)
 			return 1;
 		html("<tr><td>");
 		url = cgit_pageurl(ctx.qry.repo, "tag",
 				   fmt("id=%s", name));
 		html_link_open(url, NULL, NULL);
 		html_txt(name);
 		html_link_close();
 		html("</td><td>");
 		if (info->tagger_date > 0)
 			cgit_print_age(info->tagger_date, -1, NULL);
 		html("</td><td>");
 		if (info->tagger)
 			html(info->tagger);
 		html("</td><td>");
 		cgit_object_link(tag->tagged);
 		html("</td></tr>\n");
 	} else {
 		if (!header)
 			print_tag_header();
 		html("<tr><td>");
 		html_txt(name);
 		html("</td><td colspan='2'/><td>");
 		cgit_object_link(ref->object);
 		html("</td></tr>\n");
 	}
 	return 0;
 }
 
 static void print_refs_link(char *path)
 {
 	html("<tr class='nohover'><td colspan='4'>");
 	cgit_refs_link("[...]", NULL, NULL, ctx.qry.head, NULL, path);
 	html("</td></tr>");
 }
 
 void cgit_print_branches(int maxcount)
 {
 	struct reflist list;
 	int i;
 
 	html("<tr class='nohover'><th class='left'>Branch</th>"
 	     "<th class='left'>Idle</th>"
 	     "<th class='left'>Author</th>"
 	     "<th class='left'>Head commit</th></tr>\n");
 
 	list.refs = NULL;
 	list.alloc = list.count = 0;
 	for_each_branch_ref(cgit_refs_cb, &list);
 
 	if (maxcount == 0 || maxcount > list.count)
 		maxcount = list.count;
 
 	if (maxcount < list.count) {
 		qsort(list.refs, list.count, sizeof(*list.refs), cmp_branch_age);
 		qsort(list.refs, maxcount, sizeof(*list.refs), cmp_ref_name);
 	}
 
 	for(i=0; i<maxcount; i++)
 		print_branch(list.refs[i]);
 
 	if (maxcount < list.count)
 		print_refs_link("heads");
 }
 
 void cgit_print_tags(int maxcount)
 {
 	struct reflist list;
 	int i;
 
 	header = 0;
 	list.refs = NULL;
 	list.alloc = list.count = 0;
 	for_each_tag_ref(cgit_refs_cb, &list);
 	if (list.count == 0)
 		return;
 	qsort(list.refs, list.count, sizeof(*list.refs), cmp_tag_age);
 	if (!maxcount)
 		maxcount = list.count;
 	else if (maxcount > list.count)
 		maxcount = list.count;
 	print_tag_header();
 	for(i=0; i<maxcount; i++)
 		print_tag(list.refs[i]);
 
 	if (maxcount < list.count)
 		print_refs_link("tags");
 }
 
 void cgit_print_refs()
 {
 
 	html("<table class='list nowrap'>");
 
 	if (ctx.qry.path && !strncmp(ctx.qry.path, "heads", 5))
 		cgit_print_branches(0);
 	else if (ctx.qry.path && !strncmp(ctx.qry.path, "tags", 4))
 		cgit_print_tags(0);
 	else {
 		cgit_print_branches(0);
 		html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
 		cgit_print_tags(0);
 	}
 
 	html("</table>");
 }
diff --git a/ui-repolist.c b/ui-repolist.c
index ad9b1bc..eeeaf3d 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -1,113 +1,114 @@
 /* ui-repolist.c: functions for generating the repolist page
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include <time.h>
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 time_t read_agefile(char *path)
 {
 	FILE *f;
 	static char buf[64], buf2[64];
 
 	if (!(f = fopen(path, "r")))
 		return -1;
 	fgets(buf, sizeof(buf), f);
 	fclose(f);
 	if (parse_date(buf, buf2, sizeof(buf2)))
 		return strtoul(buf2, NULL, 10);
 	else
 		return 0;
 }
 
 static void print_modtime(struct cgit_repo *repo)
 {
 	char *path;
 	struct stat s;
 
 	path = fmt("%s/%s", repo->path, ctx.cfg.agefile);
 	if (stat(path, &s) == 0) {
 		cgit_print_age(read_agefile(path), -1, NULL);
 		return;
 	}
 
 	path = fmt("%s/refs/heads/%s", repo->path, repo->defbranch);
 	if (stat(path, &s) != 0)
 		return;
 	cgit_print_age(s.st_mtime, -1, NULL);
 }
 
 void cgit_print_repolist()
 {
 	int i, columns = 4;
 	char *last_group = NULL;
 
 	if (ctx.cfg.enable_index_links)
 		columns++;
 
 	ctx.page.title = ctx.cfg.root_title;
 	cgit_print_http_headers(&ctx);
 	cgit_print_docstart(&ctx);
 	cgit_print_pageheader(&ctx);
 
 	html("<table summary='repository list' class='list nowrap'>");
 	if (ctx.cfg.index_header) {
 		htmlf("<tr class='nohover'><td colspan='%d' class='include-block'>",
 		      columns);
 		html_include(ctx.cfg.index_header);
 		html("</td></tr>");
 	}
 	html("<tr class='nohover'>"
 	     "<th class='left'>Name</th>"
 	     "<th class='left'>Description</th>"
 	     "<th class='left'>Owner</th>"
 	     "<th class='left'>Idle</th>");
 	if (ctx.cfg.enable_index_links)
 		html("<th>Links</th>");
 	html("</tr>\n");
 
 	for (i=0; i<cgit_repolist.count; i++) {
 		ctx.repo = &cgit_repolist.repos[i];
 		if ((last_group == NULL && ctx.repo->group != NULL) ||
 		    (last_group != NULL && ctx.repo->group == NULL) ||
 		    (last_group != NULL && ctx.repo->group != NULL &&
 		     strcmp(ctx.repo->group, last_group))) {
 			htmlf("<tr class='nohover'><td colspan='%d' class='repogroup'>",
 			      columns);
 			html_txt(ctx.repo->group);
 			html("</td></tr>");
 			last_group = ctx.repo->group;
 		}
 		htmlf("<tr><td class='%s'>",
 		      ctx.repo->group ? "sublevel-repo" : "toplevel-repo");
 		html_link_open(cgit_repourl(ctx.repo->url), NULL, NULL);
 		html_txt(ctx.repo->name);
 		html_link_close();
 		html("</td><td>");
 		html_ntxt(ctx.cfg.max_repodesc_len, ctx.repo->desc);
 		html("</td><td>");
 		html_txt(ctx.repo->owner);
 		html("</td><td>");
 		print_modtime(ctx.repo);
 		html("</td>");
 		if (ctx.cfg.enable_index_links) {
 			html("<td>");
 			html_link_open(cgit_repourl(ctx.repo->url),
 				       NULL, "button");
 			html("summary</a>");
 			cgit_log_link("log", NULL, "button", NULL, NULL, NULL,
 				      0, NULL, NULL);
 			cgit_tree_link("tree", NULL, "button", NULL, NULL, NULL);
 			html("</td>");
 		}
 		html("</tr>\n");
 	}
 	html("</table>");
 	cgit_print_docend();
 }
diff --git a/ui-shared.h b/ui-shared.h
new file mode 100644
index 0000000..94de884
--- a/dev/null
+++ b/ui-shared.h
@@ -0,0 +1,36 @@
+#ifndef UI_SHARED_H
+#define UI_SHARED_H
+
+extern char *cgit_repourl(const char *reponame);
+extern char *cgit_fileurl(const char *reponame, const char *pagename,
+			  const char *filename, const char *query);
+extern char *cgit_pageurl(const char *reponame, const char *pagename,
+			  const char *query);
+
+extern void cgit_tree_link(char *name, char *title, char *class, char *head,
+			   char *rev, char *path);
+extern void cgit_log_link(char *name, char *title, char *class, char *head,
+			  char *rev, char *path, int ofs, char *grep,
+			  char *pattern);
+extern void cgit_commit_link(char *name, char *title, char *class, char *head,
+			     char *rev);
+extern void cgit_refs_link(char *name, char *title, char *class, char *head,
+			   char *rev, char *path);
+extern void cgit_snapshot_link(char *name, char *title, char *class,
+			       char *head, char *rev, char *archivename);
+extern void cgit_diff_link(char *name, char *title, char *class, char *head,
+			   char *new_rev, char *old_rev, char *path);
+extern void cgit_object_link(struct object *obj);
+
+extern void cgit_print_error(char *msg);
+extern void cgit_print_date(time_t secs, char *format);
+extern void cgit_print_age(time_t t, time_t max_relative, char *format);
+extern void cgit_print_http_headers(struct cgit_context *ctx);
+extern void cgit_print_docstart(struct cgit_context *ctx);
+extern void cgit_print_docend();
+extern void cgit_print_pageheader(struct cgit_context *ctx);
+extern void cgit_print_filemode(unsigned short mode);
+extern void cgit_print_snapshot_links(const char *repo, const char *head,
+				      const char *hex, int snapshots);
+
+#endif /* UI_SHARED_H */
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 512fcd2..966a140 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -1,113 +1,114 @@
 /* ui-snapshot.c: generate snapshot of a commit
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 static int write_compressed_tar_archive(struct archiver_args *args,const char *filter)
 {
 	int rw[2];
 	pid_t gzpid;
 	int stdout2;
 	int status;
 	int rv;
 
 	stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing");
 	chk_zero(pipe(rw), "Opening pipe from compressor subprocess");
 	gzpid = chk_non_negative(fork(), "Forking compressor subprocess");
 	if(gzpid==0) {
 		/* child */
 		chk_zero(close(rw[1]), "Closing write end of pipe in child");
 		chk_zero(close(STDIN_FILENO), "Closing STDIN");
 		chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin");
 		execlp(filter,filter,NULL);
 		_exit(-1);
 	}
 	/* parent */
 	chk_zero(close(rw[0]), "Closing read end of pipe");
 	chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
 
 	rv = write_tar_archive(args);
 
 	chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor");
 	chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT");
 	chk_zero(close(stdout2), "Closing uncompressed STDOUT");
 	chk_zero(close(rw[1]), "Closing write end of pipe in parent");
 	chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process");
 	if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) )
 		cgit_print_error("Failed to compress archive");
 
 	return rv;
 }
 
 static int write_tar_gzip_archive(struct archiver_args *args)
 {
 	return write_compressed_tar_archive(args,"gzip");
 }
 
 static int write_tar_bzip2_archive(struct archiver_args *args)
 {
 	return write_compressed_tar_archive(args,"bzip2");
 }
 
 const struct cgit_snapshot_format cgit_snapshot_formats[] = {
 	{ ".zip", "application/x-zip", write_zip_archive, 0x1 },
 	{ ".tar.gz", "application/x-tar", write_tar_gzip_archive, 0x2 },
 	{ ".tar.bz2", "application/x-tar", write_tar_bzip2_archive, 0x4 },
 	{ ".tar", "application/x-tar", write_tar_archive, 0x8 },
 	{}
 };
 
 static int make_snapshot(const struct cgit_snapshot_format *format,
 			 const char *hex, const char *prefix,
 			 const char *filename)
 {
 	struct archiver_args args;
 	struct commit *commit;
 	unsigned char sha1[20];
 
 	if(get_sha1(hex, sha1)) {
 		cgit_print_error(fmt("Bad object id: %s", hex));
 		return 1;
 	}
 	commit = lookup_commit_reference(sha1);
 	if(!commit) {
 		cgit_print_error(fmt("Not a commit reference: %s", hex));
 		return 1;
 	}
 	memset(&args, 0, sizeof(args));
 	args.base = fmt("%s/", prefix);
 	args.tree = commit->tree;
 	args.time = commit->date;
 	ctx.page.mimetype = xstrdup(format->mimetype);
 	ctx.page.filename = xstrdup(filename);
 	cgit_print_http_headers(&ctx);
 	format->write_func(&args);
 	return 0;
 }
 
 void cgit_print_snapshot(const char *head, const char *hex, const char *prefix,
 			 const char *filename, int snapshots)
 {
 	const struct cgit_snapshot_format* f;
 	int sl, fnl;
 
 	fnl = strlen(filename);
 	if (!hex)
 		hex = head;
 	for (f = cgit_snapshot_formats; f->suffix; f++) {
 		if (!(snapshots & f->bit))
 			continue;
 		sl = strlen(f->suffix);
 		if(fnl < sl || strcmp(&filename[fnl-sl], f->suffix))
 			continue;
 		make_snapshot(f, hex, prefix, filename);
 		return;
 	}
 	cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
 }
diff --git a/ui-tag.c b/ui-tag.c
index 2998d02..ab2c66d 100644
--- a/ui-tag.c
+++ b/ui-tag.c
@@ -1,74 +1,75 @@
 /* ui-tag.c: display a tag
  *
  * Copyright (C) 2007 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 static void print_tag_content(char *buf)
 {
 	char *p;
 
 	if (!buf)
 		return;
 
 	html("<div class='commit-subject'>");
 	p = strchr(buf, '\n');
 	if (p)
 		*p = '\0';
 	html_txt(buf);
 	html("</div>");
 	if (p) {
 		html("<div class='commit-msg'>");
 		html_txt(++p);
 		html("</div>");
 	}
 }
 
 void cgit_print_tag(char *revname)
 {
 	unsigned char sha1[20];
 	struct object *obj;
 	struct tag *tag;
 	struct taginfo *info;
 
 	if (get_sha1(revname, sha1)) {
 		cgit_print_error(fmt("Bad tag reference: %s", revname));
 		return;
 	}
 	obj = parse_object(sha1);
 	if (!obj) {
 		cgit_print_error(fmt("Bad object id: %s", sha1_to_hex(sha1)));
 		return;
 	}
 	if (obj->type == OBJ_TAG) {
 		tag = lookup_tag(sha1);
 		if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag))) {
 			cgit_print_error(fmt("Bad tag object: %s", revname));
 			return;
 		}
 		html("<table class='commit-info'>\n");
 		htmlf("<tr><td>Tag name</td><td>%s (%s)</td></tr>\n",
 		      revname, sha1_to_hex(sha1));
 		if (info->tagger_date > 0) {
 			html("<tr><td>Tag date</td><td>");
 			cgit_print_date(info->tagger_date, FMT_LONGDATE);
 			html("</td></tr>\n");
 		}
 		if (info->tagger) {
 			html("<tr><td>Tagged by</td><td>");
 			html_txt(info->tagger);
 			html("</td></tr>\n");
 		}
 		html("<tr><td>Tagged object</td><td>");
 		cgit_object_link(tag->tagged);
 		html("</td></tr>\n");
 		html("</table>\n");
 		print_tag_content(info->msg);
 	}
 	return;
 }
diff --git a/ui-tree.c b/ui-tree.c
index 7912784..9be3140 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -1,217 +1,218 @@
 /* ui-tree.c: functions for tree output
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
+#include "ui-shared.h"
 
 char *curr_rev;
 char *match_path;
 int header = 0;
 
 static void print_object(const unsigned char *sha1, char *path)
 {
 	enum object_type type;
 	char *buf;
 	unsigned long size, lineno, start, idx;
 	const char *linefmt = "<tr><td class='no'><a id='n%1$d' name='n%1$d' href='#n%1$d'>%1$d</a></td><td class='txt'>";
 
 	type = sha1_object_info(sha1, &size);
 	if (type == OBJ_BAD) {
 		cgit_print_error(fmt("Bad object name: %s",
 				     sha1_to_hex(sha1)));
 		return;
 	}
 
 	buf = read_sha1_file(sha1, &type, &size);
 	if (!buf) {
 		cgit_print_error(fmt("Error reading object %s",
 				     sha1_to_hex(sha1)));
 		return;
 	}
 
 	html(" blob: <a href='");
 	html_attr(cgit_pageurl(ctx.qry.repo, "blob", fmt("id=%s", sha1_to_hex(sha1))));
 	htmlf("'>%s</a>",sha1_to_hex(sha1));
 
 	html("<table summary='blob content' class='blob'>\n");
 	idx = 0;
 	start = 0;
 	lineno = 0;
 	while(idx < size) {
 		if (buf[idx] == '\n') {
 			buf[idx] = '\0';
 			htmlf(linefmt, ++lineno);
 			html_txt(buf + start);
 			html("</td></tr>\n");
 			start = idx + 1;
 		}
 		idx++;
 	}
 	htmlf(linefmt, ++lineno);
 	html_txt(buf + start);
 	html("</td></tr>\n");
 	html("</table>\n");
 }
 
 
 static int ls_item(const unsigned char *sha1, const char *base, int baselen,
 		   const char *pathname, unsigned int mode, int stage)
 {
 	char *name;
 	char *fullpath;
 	enum object_type type;
 	unsigned long size = 0;
 
 	name = xstrdup(pathname);
 	fullpath = fmt("%s%s%s", ctx.qry.path ? ctx.qry.path : "",
 		       ctx.qry.path ? "/" : "", name);
 
 	type = sha1_object_info(sha1, &size);
 	if (type == OBJ_BAD && !S_ISGITLINK(mode)) {
 		htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
 		      name,
 		      sha1_to_hex(sha1));
 		return 0;
 	}
 
 	html("<tr><td class='ls-mode'>");
 	cgit_print_filemode(mode);
 	html("</td><td>");
 	if (S_ISGITLINK(mode)) {
 		htmlf("<a class='ls-mod' href='");
 		html_attr(fmt(ctx.repo->module_link,
 			      name,
 			      sha1_to_hex(sha1)));
 		html("'>");
 		html_txt(name);
 		html("</a>");
 	} else if (S_ISDIR(mode)) {
 		cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head,
 			       curr_rev, fullpath);
 	} else {
 		cgit_tree_link(name, NULL, "ls-blob", ctx.qry.head,
 			       curr_rev, fullpath);
 	}
 	htmlf("</td><td class='ls-size'>%li</td>", size);
 
 	html("<td>");
 	cgit_log_link("log", NULL, "button", ctx.qry.head, curr_rev,
 		      fullpath, 0, NULL, NULL);
 	html("</td></tr>\n");
 	free(name);
 	return 0;
 }
 
 static void ls_head()
 {
 	html("<table summary='tree listing' class='list'>\n");
 	html("<tr class='nohover'>");
 	html("<th class='left'>Mode</th>");
 	html("<th class='left'>Name</th>");
 	html("<th class='right'>Size</th>");
 	html("<th/>");
 	html("</tr>\n");
 	header = 1;
 }
 
 static void ls_tail()
 {
 	if (!header)
 		return;
 	html("</table>\n");
 	header = 0;
 }
 
 static void ls_tree(const unsigned char *sha1, char *path)
 {
 	struct tree *tree;
 
 	tree = parse_tree_indirect(sha1);
 	if (!tree) {
 		cgit_print_error(fmt("Not a tree object: %s",
 				     sha1_to_hex(sha1)));
 		return;
 	}
 
 	ls_head();
 	read_tree_recursive(tree, "", 0, 1, NULL, ls_item);
 	ls_tail();
 }
 
 
 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 		     const char *pathname, unsigned mode, int stage)
 {
 	static int state;
 	static char buffer[PATH_MAX];
 	char *url;
 
 	if (state == 0) {
 		memcpy(buffer, base, baselen);
 		strcpy(buffer+baselen, pathname);
 		url = cgit_pageurl(ctx.qry.repo, "tree",
 				   fmt("h=%s&amp;path=%s", curr_rev, buffer));
 		html("/");
 		cgit_tree_link(xstrdup(pathname), NULL, NULL, ctx.qry.head,
 			       curr_rev, buffer);
 
 		if (strcmp(match_path, buffer))
 			return READ_TREE_RECURSIVE;
 
 		if (S_ISDIR(mode)) {
 			state = 1;
 			ls_head();
 			return READ_TREE_RECURSIVE;
 		} else {
 			print_object(sha1, buffer);
 			return 0;
 		}
 	}
 	ls_item(sha1, base, baselen, pathname, mode, stage);
 	return 0;
 }
 
 
 /*
  * Show a tree or a blob
  *   rev:  the commit pointing at the root tree object
  *   path: path to tree or blob
  */
 void cgit_print_tree(const char *rev, char *path)
 {
 	unsigned char sha1[20];
 	struct commit *commit;
 	const char *paths[] = {path, NULL};
 
 	if (!rev)
 		rev = ctx.qry.head;
 
 	curr_rev = xstrdup(rev);
 	if (get_sha1(rev, sha1)) {
 		cgit_print_error(fmt("Invalid revision name: %s", rev));
 		return;
 	}
 	commit = lookup_commit_reference(sha1);
 	if (!commit || parse_commit(commit)) {
 		cgit_print_error(fmt("Invalid commit reference: %s", rev));
 		return;
 	}
 
 	html("path: <a href='");
 	html_attr(cgit_pageurl(ctx.qry.repo, "tree", fmt("h=%s", rev)));
 	html("'>root</a>");
 
 	if (path == NULL) {
 		ls_tree(commit->tree->object.sha1, NULL);
 		return;
 	}
 
 	match_path = path;
 	read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree);
 	ls_tail();
 }