[vala] vapigen: Allow metadata files to set PrintfFormat

[Jürg Billeter <juergbi src gnome org>]

commit 4fb50e7770915b36570df026e08957d4e68ed835
Author: Evan Nemerson <evan coeus-group com>
Date:   Wed Mar 25 13:46:10 2009 -0700

    vapigen: Allow metadata files to set PrintfFormat
    
    Fixes bug 576765.
---
 vala/valacodewriter.vala    |    4 ++++
 vapigen/valagidlparser.vala |    5 ++++-
 2 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/vala/valacodewriter.vala b/vala/valacodewriter.vala
index 9e72baa..d44a77d 100644
--- a/vala/valacodewriter.vala
+++ b/vala/valacodewriter.vala
@@ -851,6 +851,10 @@ public class Vala.CodeWriter : CodeVisitor {
 			write_indent ();
 			write_string ("[ReturnsModifiedPointer]");
 		}
+		if (m.printf_format) {
+			write_indent ();
+			write_string ("[PrintfFormat]");
+		}
 
 		var ccode_params = new StringBuilder ();
 		var separator = "";
diff --git a/vapigen/valagidlparser.vala b/vapigen/valagidlparser.vala
index c5a27a6..3380553 100644
--- a/vapigen/valagidlparser.vala
+++ b/vapigen/valagidlparser.vala
@@ -1393,6 +1393,10 @@ public class Vala.GIdlParser : CodeVisitor {
 					if (eval (nv[1]) == "1") {
 						add_ellipsis = true;
 					}
+				} else if (nv[0] == "printf_format") {
+					if (eval (nv[1]) == "1") {
+						m.printf_format = true;
+					}
 				} else if (nv[0] == "transfer_ownership") {
 					if (eval (nv[1]) == "1") {
 						return_type.value_owned = true;
@@ -1450,7 +1454,6 @@ public class Vala.GIdlParser : CodeVisitor {
 				} else if (nv[0] == "vfunc_name") {
 					m.vfunc_name = eval (nv[1]);
 				}
-
 			}
 		}