Implemented configurable HEAD shortlog on summary page.

This mirrors similiar functionality in gitweb. After clicking on
project on projectlist you will immediatelly see quick summary
of last N commits on HEAD.

[lh: changed from HEAD to cgit_query_head]

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

cgit.h

@@ -127,6 +127,7 @@ extern int cgit_cache_repo_ttl;
 extern int cgit_cache_dynamic_ttl;
 extern int cgit_cache_static_ttl;
 extern int cgit_cache_max_create_time;
+extern int cgit_summary_log;
 
 extern int cgit_max_msg_len;
 extern int cgit_max_repodesc_len;

cgitrc

@@ -20,6 +20,11 @@
 #enable-log-linecount=0
 
 
+## Enable/disable display of HEAD shortlog in summary view. Set it to maximum
+## number of commits that should be displayed
+#summary-log=0
+
+
 ## Specify a root for virtual urls. This makes cgit generate urls like
 ##
 ##    http://localhost/git/repo/log/?id=master

shared.c

@@ -34,6 +34,7 @@ int cgit_cache_repo_ttl        =  5;
 int cgit_cache_dynamic_ttl     =  5;
 int cgit_cache_static_ttl      = -1;
 int cgit_cache_max_create_time =  5;
+int cgit_summary_log           =  0;
 
 int cgit_max_msg_len = 60;
 int cgit_max_repodesc_len = 60;
@@ -164,6 +165,8 @@ void cgit_global_config_cb(const char *name, const char *value)
 		cgit_max_repodesc_len = atoi(value);
 	else if (!strcmp(name, "max-commit-count"))
 		cgit_max_commit_count = atoi(value);
+	else if (!strcmp(name, "summary-log"))
+		cgit_summary_log = atoi(value);
 	else if (!strcmp(name, "agefile"))
 		cgit_agefile = xstrdup(value);
 	else if (!strcmp(name, "repo.group"))

ui-summary.c

@@ -19,6 +19,9 @@ static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
 
 	strncpy(buf, refname, sizeof(buf));
 	commit = lookup_commit(sha1);
+	// object is not really parsed at this point, because of some fallout
+	// from previous calls to git functions in cgit_print_log()
+	commit->object.parsed = 0;
 	if (commit && !parse_commit(commit)){
 		info = cgit_parse_commit(commit);
 		html("<tr><td>");
@@ -203,8 +206,11 @@ void cgit_print_summary()
 	if (cgit_repo->readme)
 		html_include(cgit_repo->readme);
 	html("</div>");
-
+	if (cgit_summary_log > 0)
+		cgit_print_log(cgit_query_head, 0, cgit_summary_log, NULL, NULL, 0);
 	html("<table class='list nowrap'>");
+	if (cgit_summary_log > 0)
+		html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
 	cgit_print_branches();
 	html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
 	cgit_print_tags();