[PATCH 5/6] Add graph page tab if enable-commit-graph is set to "separate"

[Kian Kasad]

If "enable-commit-graph" is set to "separate", a tab is added in the
navigation bar for the graph page. It sits next to the "log" link.
---
 ui-shared.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/ui-shared.c b/ui-shared.c
index acd8ab5..a0c326e 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -401,6 +401,49 @@ void cgit_log_link(const char *name, const char *title, const char *class,
 	html("</a>");
 }
 
+void cgit_graph_link(const char *name, const char *title, const char *class,
+		   const char *head, const char *rev, const char *path,
+		   int ofs, const char *grep, const char *pattern, int showmsg,
+		   int follow)
+{
+	char *delim;
+
+	delim = repolink(title, class, "graph", head, path);
+	if (rev && ctx.qry.head && strcmp(rev, ctx.qry.head)) {
+		html(delim);
+		html("id=");
+		html_url_arg(rev);
+		delim = "&";
+	}
+	if (grep && pattern) {
+		html(delim);
+		html("qt=");
+		html_url_arg(grep);
+		delim = "&";
+		html(delim);
+		html("q=");
+		html_url_arg(pattern);
+	}
+	if (ofs > 0) {
+		html(delim);
+		html("ofs=");
+		htmlf("%d", ofs);
+		delim = "&";
+	}
+	if (showmsg) {
+		html(delim);
+		html("showmsg=1");
+		delim = "&";
+	}
+	if (follow) {
+		html(delim);
+		html("follow=1");
+	}
+	html("'>");
+	html_txt(name);
+	html("</a>");
+}
+
 void cgit_commit_link(const char *name, const char *title, const char *class,
 		      const char *head, const char *rev, const char *path)
 {
@@ -1043,6 +1086,10 @@ void cgit_print_pageheader(void)
 		cgit_log_link("log", NULL, hc("log"), ctx.qry.head,
 			      NULL, ctx.qry.vpath, 0, NULL, NULL,
 			      ctx.qry.showmsg, ctx.qry.follow);
+		if (ctx.repo->enable_commit_graph == 2)
+			cgit_graph_link("graph", NULL, hc("graph"), ctx.qry.head,
+					NULL, ctx.qry.vpath, 0, NULL, NULL,
+					ctx.qry.showmsg, ctx.qry.follow);
 		if (ctx.qry.page && !strcmp(ctx.qry.page, "blame"))
 			cgit_blame_link("blame", NULL, hc("blame"), ctx.qry.head,
 				        ctx.qry.oid, ctx.qry.vpath);
-- 
2.37.1