Add cgit_print_age() function

This function can be used to print relative dates, just as in gitweb. Next
step will be to actually use the new function.

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

5 files changed, 94 insertions, 8 deletions

diff --git a/cgit.css b/cgit.css
index 95c3e40..327eaba 100644
--- a/cgit.css
+++ b/cgit.css
@@ -343,48 +343,73 @@ table.diff td div.del {
 
 .sha1 {
 	font-family: courier;
 	font-size: 90%;
 }
 
 .left {
 	text-align: left;
 }
 
 .right {
 	text-align: right;
 }
 
 table.list td.repogroup {
 	font-style: italic;
 	color: #888;
 }
 
 a.button {
 	font-size: 80%;
 	color: #333;
 	background-color: #ccc;
 	border: solid 1px #999;
 	padding: 0em 0.5em;
 	margin: 0.1em 0.25em;
 }
 
 a.button:hover {
 	text-decoration: none;
 	background-color: #eee;
 }
 
 a.primary {
 	font-size: 100%;
 }
 
 a.secondary {
 	font-size: 90%;
 }
 
 td.toplevel-repo {
 
 }
 
 table.list td.sublevel-repo {
 	padding-left: 1.5em;
 }
+
+span.age-mins {
+	font-weight: bold;
+	color: #080;
+}
+
+span.age-hours {
+	color: #080;
+}
+
+span.age-days {
+	color: #040;
+}
+
+span.age-weeks {
+	color: #444;
+}
+
+span.age-months {
+	color: #888;
+}
+
+span.age-years {
+	color: #bbb;
+}
diff --git a/cgit.h b/cgit.h
index 8927236..4da2d3d 100644
--- a/cgit.h
+++ b/cgit.h
@@ -1,79 +1,98 @@
 #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>
 
 
 /*
  * The valid cgit repo-commands
  */
 #define CMD_LOG      1
 #define CMD_COMMIT   2
 #define CMD_DIFF     3
 #define CMD_TREE     4
 #define CMD_VIEW     5
 #define CMD_BLOB     6
 #define CMD_SNAPSHOT 7
 
+
+/*
+ * 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)
+
+
 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 repoinfo {
 	char *url;
 	char *name;
 	char *path;
 	char *desc;
 	char *owner;
 	char *defbranch;
 	char *group;
 	char *module_link;
 	int snapshots;
 	int enable_log_filecount;
 	int enable_log_linecount;
 };
 
 struct repolist {
 	int length;
 	int count;
 	struct repoinfo *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;
 };
 
 struct taginfo {
 	char *tagger;
 	char *tagger_email;
 	int tagger_date;
 	char *msg;
@@ -136,70 +155,71 @@ 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 hextoint(char c);
 
 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);
 
 extern void cgit_diff_commit(struct commit *commit, filepair_fn fn);
 
 extern char *fmt(const char *format,...);
 
 extern void html(const char *txt);
 extern void htmlf(const char *format,...);
 extern void html_txt(char *txt);
 extern void html_ntxt(int len, char *txt);
 extern void html_attr(char *txt);
 extern void html_hidden(char *name, char *value);
 extern void html_link_open(char *url, char *title, char *class);
 extern void html_link_close(void);
 extern void html_filemode(unsigned short mode);
 extern int html_include(const char *filename);
 
 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_pageurl(const char *reponame, const char *pagename,
 			  const char *query);
 
 extern void cgit_print_error(char *msg);
-extern void cgit_print_date(unsigned long secs);
+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_docstart(char *title, struct cacheitem *item);
 extern void cgit_print_docend();
 extern void cgit_print_pageheader(char *title, int show_search);
 extern void cgit_print_snapshot_start(const char *mimetype,
 				      const char *filename,
 				      struct cacheitem *item);
 
 extern void cgit_print_repolist(struct cacheitem *item);
 extern void cgit_print_summary();
 extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *path);
 extern void cgit_print_view(const char *hex, char *path);
 extern void cgit_print_blob(struct cacheitem *item, const char *hex, char *path);
 extern void cgit_print_tree(const char *rev, const char *hex, char *path);
 extern void cgit_print_commit(const char *hex);
 extern void cgit_print_diff(const char *head, const char *old_hex, const char *new_hex,
 			    char *path);
 extern void cgit_print_snapshot(struct cacheitem *item, const char *hex,
 				const char *format, const char *prefix,
 				const char *filename);
 
 #endif /* CGIT_H */
diff --git a/ui-commit.c b/ui-commit.c
index ff1fad3..59eeb1d 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -127,104 +127,104 @@ void inspect_filepair(struct diff_filepair *pair)
 			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(const char *hex)
 {
 	struct commit *commit, *parent;
 	struct commitinfo *info;
 	struct commit_list *p;
 	unsigned char sha1[20];
 	char *query;
 	char *filename;
 	int i;
 
 	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 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);
+	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);
+	cgit_print_date(info->committer_date, FMT_LONGDATE);
 	html("</td></tr>\n");
 	html("<tr><th>tree</th><td colspan='2' class='sha1'><a href='");
 	query = fmt("h=%s&id=%s", sha1_to_hex(commit->object.sha1),
 		    sha1_to_hex(commit->tree->object.sha1));
 	html_attr(cgit_pageurl(cgit_query_repo, "tree", query));
 	htmlf("'>%s</a></td></tr>\n", sha1_to_hex(commit->tree->object.sha1));
       	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'>"
 		     "<a href='");
 		query = fmt("h=%s", sha1_to_hex(p->item->object.sha1));
 		html_attr(cgit_pageurl(cgit_query_repo, "commit", query));
 		htmlf("'>%s</a> (<a href='",
 		      sha1_to_hex(p->item->object.sha1));
 		query = fmt("id=%s&id2=%s", sha1_to_hex(parent->tree->object.sha1),
 			    sha1_to_hex(commit->tree->object.sha1));
 		html_attr(cgit_pageurl(cgit_query_repo, "diff", query));
 		html("'>diff</a>)</td></tr>");
 	}
 	if (cgit_repo->snapshots) {
 		htmlf("<tr><th>download</th><td colspan='2' class='sha1'><a href='");
 		filename = fmt("%s-%s.zip", cgit_query_repo, hex);
 		html_attr(cgit_pageurl(cgit_query_repo, "snapshot",
 				       fmt("id=%s&name=%s", hex, filename)));
 		htmlf("'>%s</a></td></tr>", filename);
 	}
 	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 class='diffstat'>");
 		max_changes = 0;
 		cgit_diff_commit(commit, inspect_filepair);
 		for(i = 0; i<files; i++)
 			print_fileinfo(&items[i]);
 		html("</table>");
diff --git a/ui-shared.c b/ui-shared.c
index c7fbc5e..acc771b 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -43,106 +43,147 @@ void cgit_print_error(char *msg)
 char *cgit_rooturl()
 {
 	if (cgit_virtual_root)
 		return fmt("%s/", cgit_virtual_root);
 	else
 		return cgit_script_name;
 }
 
 char *cgit_repourl(const char *reponame)
 {
 	if (cgit_virtual_root) {
 		return fmt("%s/%s/", cgit_virtual_root, reponame);
 	} else {
 		return fmt("?r=%s", reponame);
 	}
 }
 
 char *cgit_pageurl(const char *reponame, const char *pagename,
 		   const char *query)
 {
 	if (cgit_virtual_root) {
 		if (query)
 			return fmt("%s/%s/%s/?%s", cgit_virtual_root, reponame,
 				   pagename, query);
 		else
 			return fmt("%s/%s/%s/", cgit_virtual_root, reponame,
 				   pagename);
 	} else {
 		if (query)
 			return fmt("?r=%s&p=%s&%s", reponame, pagename, query);
 		else
 			return fmt("?r=%s&p=%s", reponame, pagename);
 	}
 }
 
 char *cgit_currurl()
 {
 	if (!cgit_virtual_root)
 		return cgit_script_name;
 	else if (cgit_query_page)
 		return fmt("%s/%s/%s/", cgit_virtual_root, cgit_query_repo, cgit_query_page);
 	else if (cgit_query_repo)
 		return fmt("%s/%s/", cgit_virtual_root, cgit_query_repo);
 	else
 		return fmt("%s/", cgit_virtual_root);
 }
 
 
-void cgit_print_date(unsigned long secs)
+void cgit_print_date(time_t secs, char *format)
 {
-	char buf[32];
+	char buf[64];
 	struct tm *time;
 
 	time = gmtime(&secs);
-	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
+	strftime(buf, sizeof(buf)-1, format, time);
 	html_txt(buf);
 }
 
+void cgit_print_age(time_t t, time_t max_relative, char *format)
+{
+	time_t now, secs;
+
+	time(&now);
+	secs = now - t;
+
+	if (secs > max_relative && max_relative >= 0) {
+		cgit_print_date(t, format);
+		return;
+	}
+
+	if (secs < TM_HOUR * 2) {
+		htmlf("<span class='age-mins'>%.0f min.</span>",
+		      secs * 1.0 / TM_MIN);
+		return;
+	}
+	if (secs < TM_DAY * 2) {
+		htmlf("<span class='age-hours'>%.0f hours</span>",
+		      secs * 1.0 / TM_HOUR);
+		return;
+	}
+	if (secs < TM_WEEK * 2) {
+		htmlf("<span class='age-days'>%.0f days</span>",
+		      secs * 1.0 / TM_DAY);
+		return;
+	}
+	if (secs < TM_MONTH * 2) {
+		htmlf("<span class='age-weeks'>%.0f weeks</span>",
+		      secs * 1.0 / TM_WEEK);
+		return;
+	}
+	if (secs < TM_YEAR * 2) {
+		htmlf("<span class='age-months'>%.0f months</span>",
+		      secs * 1.0 / TM_MONTH);
+		return;
+	}
+	htmlf("<span class='age-years'>%.0f years</span>",
+	      secs * 1.0 / TM_YEAR);
+}
+
 void cgit_print_docstart(char *title, struct cacheitem *item)
 {
 	html("Content-Type: text/html; charset=utf-8\n");
 	htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
 	htmlf("Expires: %s\n", http_date(item->st.st_mtime +
 					 ttl_seconds(item->ttl)));
 	html("\n");
 	html(cgit_doctype);
 	html("<html>\n");
 	html("<head>\n");
 	html("<title>");
 	html_txt(title);
 	html("</title>\n");
 	htmlf("<meta name='generator' content='cgit v%s'/>\n", cgit_version);
 	html("<link rel='stylesheet' type='text/css' href='");
 	html_attr(cgit_css);
 	html("'/>\n");
 	html("</head>\n");
 	html("<body>\n");
 }
 
 void cgit_print_docend()
 {
 	html("</td></tr></table>");
 	html("</body>\n</html>\n");
 }
 
 void cgit_print_pageheader(char *title, int show_search)
 {
 	html("<table id='layout'>");
 	html("<tr><td id='header'>");
 	html(cgit_root_title);
 	html("</td><td id='logo'>");
 	html("<a href='");
 	html_attr(cgit_logo_link);
 	htmlf("'><img src='%s'/></a>", cgit_logo);
 	html("</td></tr>");
 	html("<tr><td id='crumb'>");
 	htmlf("<a href='%s'>root</a>", cgit_rooturl());
 	if (cgit_query_repo) {
 		htmlf(" : <a href='%s'>", cgit_repourl(cgit_repo->url));
 		html_txt(cgit_repo->name);
 		htmlf("</a> : %s", title);
 	}
 	html("</td>");
 	html("<td id='search'>");
 	if (show_search) {
 		html("<form method='get' href='");
diff --git a/ui-summary.c b/ui-summary.c
index e7158cc..20394de 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -1,159 +1,159 @@
 /* ui-summary.c: functions for generating repo summary page
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 static int header;
 
 static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
 				int flags, void *cb_data)
 {
 	struct commit *commit;
 	struct commitinfo *info;
 	char buf[256], *url;
 
 	strncpy(buf, refname, sizeof(buf));
 	commit = lookup_commit(sha1);
 	if (commit && !parse_commit(commit)){
 		info = cgit_parse_commit(commit);
 		html("<tr><td>");
 		url = cgit_pageurl(cgit_query_repo, "log",
 				   fmt("h=%s", refname));
 		html_link_open(url, NULL, NULL);
 		html_txt(buf);
 		html_link_close();
 		html("</td><td>");
-		cgit_print_date(commit->date);
+		cgit_print_date(commit->date, FMT_LONGDATE);
 		html("</td><td>");
 		html_txt(info->author);
 		html("</td><td>");
 		url = cgit_pageurl(cgit_query_repo, "commit",
 				   fmt("h=%s", sha1_to_hex(sha1)));
 		html_link_open(url, NULL, NULL);
 		html_ntxt(cgit_max_msg_len, info->subject);
 		html_link_close();
 		html("</td></tr>\n");
 		cgit_free_commitinfo(info);
 	} else {
 		html("<tr><td>");
 		html_txt(buf);
 		html("</td><td colspan='3'>");
 		htmlf("*** bad ref %s ***", sha1_to_hex(sha1));
 		html("</td></tr>\n");
 	}
 	return 0;
 }
 
 
 static void cgit_print_object_ref(struct object *obj)
 {
 	char *page, *arg, *url;
 
 	if (obj->type == OBJ_COMMIT) {
 		page = "commit";
 		arg = "h";
 	} else if (obj->type == OBJ_TREE) {
 		page = "tree";
 		arg = "id";
 	} else {
 		page = "view";
 		arg = "id";
 	}
 
 	url = cgit_pageurl(cgit_query_repo, page,
 			   fmt("%s=%s", arg, sha1_to_hex(obj->sha1)));
 	html_link_open(url, NULL, NULL);
 	htmlf("%s %s", typename(obj->type),
 	      sha1_to_hex(obj->sha1));
 	html_link_close();
 }
 
 static void print_tag_header()
 {
 	html("<tr class='nohover'><th class='left'>Tag</th>"
 	     "<th class='left'>Created</th>"
 	     "<th class='left'>Author</th>"
 	     "<th class='left'>Reference</th></tr>\n");
 	header = 1;
 }
 
 static int cgit_print_tag_cb(const char *refname, const unsigned char *sha1,
 				int flags, void *cb_data)
 {
 	struct tag *tag;
 	struct taginfo *info;
 	struct object *obj;
 	char buf[256], *url;
 
 	strncpy(buf, refname, sizeof(buf));
 	obj = parse_object(sha1);
 	if (!obj)
 		return 1;
 	if (obj->type == OBJ_TAG) {
 		tag = lookup_tag(sha1);
 		if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
 			return 2;
 		if (!header)
 			print_tag_header();
 		html("<tr><td>");
 		url = cgit_pageurl(cgit_query_repo, "view",
 				   fmt("id=%s", sha1_to_hex(sha1)));
 		html_link_open(url, NULL, NULL);
 		html_txt(buf);
 		html_link_close();
 		html("</td><td>");
 		if (info->tagger_date > 0)
-			cgit_print_date(info->tagger_date);
+			cgit_print_date(info->tagger_date, FMT_LONGDATE);
 		html("</td><td>");
 		if (info->tagger)
 			html(info->tagger);
 		html("</td><td>");
 		cgit_print_object_ref(tag->tagged);
 		html("</td></tr>\n");
 	} else {
 		if (!header)
 			print_tag_header();
 		html("<tr><td>");
 		html_txt(buf);
 		html("</td><td colspan='2'/><td>");
 		cgit_print_object_ref(obj);
 		html("</td></tr>\n");
 	}
 	return 0;
 }
 
 static int cgit_print_archive_cb(const char *refname, const unsigned char *sha1,
 				 int flags, void *cb_data)
 {
 	struct tag *tag;
 	struct taginfo *info;
 	struct object *obj;
 	char buf[256], *url;
 	unsigned char fileid[20];
 
 	if (prefixcmp(refname, "refs/archives"))
 		return 0;
 	strncpy(buf, refname+14, sizeof(buf));
 	obj = parse_object(sha1);
 	if (!obj)
 		return 1;
 	if (obj->type == OBJ_TAG) {
 		tag = lookup_tag(sha1);
 		if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
 			return 0;
 		hashcpy(fileid, tag->tagged->sha1);
 	} else if (obj->type != OBJ_BLOB) {
 		return 0;
 	} else {
 		hashcpy(fileid, sha1);
 	}
 	if (!header) {
 		html("<table>");
 		html("<tr><th>Downloads</th></tr>");
 		header = 1;
 	}