Hand the about filter the tree url its links need

With nothing below the about page, a readme's relative links have to be
written against the tree, and only cgit knows how this site spells the
url of a tree page and which ref the readme was read from. Both reach
the filter already escaped for a url, built by the same writer as
cgit's own links.

1 file changed, 9 insertions, 1 deletion

diff --git a/source/ui-summary.c b/source/ui-summary.cindex e7b229a..44abc6b 100644--- a/source/ui-summary.c+++ b/source/ui-summary.c@@ -91,14 +91,22 @@ void cgit_print_repo_readme(void) 		} 		html("</pre>"); 	} else {+		struct strbuf tree_base = STRBUF_INIT, tree_query = STRBUF_INIT;++		// A tracked readme's links lead into the tree at the ref it was+		// read from, while one on disk has no tree to lead into.+		if (ref)+			cgit_tree_url(ref, &tree_base, &tree_query); 		// The filter is what makes the source safe here, so it is fed 		// through unescaped.-		cgit_open_filter(ctx.repo->about_filter, filename);+		cgit_open_filter(ctx.repo->about_filter, filename, tree_base.buf, tree_query.buf); 		if (ref) 			cgit_print_file(filename, ref, 1, 0); 		else 			html_include(filename); 		cgit_close_filter(ctx.repo->about_filter);+		strbuf_release(&tree_base);+		strbuf_release(&tree_query); 	} 	html("</div>"); 	cgit_print_layout_end();
diff --git a/source/ui-summary.c b/source/ui-summary.c
index e7b229a..44abc6b 100644
--- a/source/ui-summary.c
+++ b/source/ui-summary.c
@@ -91,14 +91,22 @@ void cgit_print_repo_readme(void)
 		}
 		html("</pre>");
 	} else {
+		struct strbuf tree_base = STRBUF_INIT, tree_query = STRBUF_INIT;
+
+		// A tracked readme's links lead into the tree at the ref it was
+		// read from, while one on disk has no tree to lead into.
+		if (ref)
+			cgit_tree_url(ref, &tree_base, &tree_query);
 		// The filter is what makes the source safe here, so it is fed
 		// through unescaped.
-		cgit_open_filter(ctx.repo->about_filter, filename);
+		cgit_open_filter(ctx.repo->about_filter, filename, tree_base.buf, tree_query.buf);
 		if (ref)
 			cgit_print_file(filename, ref, 1, 0);
 		else
 			html_include(filename);
 		cgit_close_filter(ctx.repo->about_filter);
+		strbuf_release(&tree_base);
+		strbuf_release(&tree_query);
 	}
 	html("</div>");
 	cgit_print_layout_end();