From a74644d1d00cf1229c11cc7c1956867c4eb4cb7f Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Thu, 2 Mar 2017 21:50:34 +0100
Subject: Factor out vprintf from ScreenBuffer::(mv)printf

---
 screenbuffer.cpp | 25 +++++++++++--------------
 screenbuffer.h   |  1 +
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/screenbuffer.cpp b/screenbuffer.cpp
index a382e82..d224181 100644
--- a/screenbuffer.cpp
+++ b/screenbuffer.cpp
@@ -74,35 +74,32 @@ void ScreenBuffer::printstr(const char *buf){
 	}
 }
 
-__attribute__((format (printf, 2, 3)))
-int ScreenBuffer::printf(const char *format,...){
-	va_list ap;
-	va_start(ap,format);
+int ScreenBuffer::printf_varargs(const char *format,va_list ap){
 	char *buf;
 	int ret=vasprintf(&buf,format,ap);
-	va_end(ap);
 	assert(buf);
-
 	printstr(buf);
-
 	free(buf);
 	return ret;
 }
 
+__attribute__((format (printf, 2, 3)))
+int ScreenBuffer::printf(const char *format,...){
+	va_list ap;
+	va_start(ap,format);
+	int ret=printf_varargs(format,ap);
+	va_end(ap);
+	return ret;
+}
+
 __attribute__((format (printf, 4, 5)))
 int ScreenBuffer::mvprintf(int x,int y,const char *format,...){
 	moveto(x,y);
 
 	va_list ap;
 	va_start(ap,format);
-	char *buf;
-	int ret=vasprintf(&buf,format,ap);
+	int ret=printf_varargs(format,ap);
 	va_end(ap);
-	assert(buf);
-
-	printstr(buf);
-
-	free(buf);
 	return ret;
 }
 
diff --git a/screenbuffer.h b/screenbuffer.h
index 49cc5c5..6e3d429 100644
--- a/screenbuffer.h
+++ b/screenbuffer.h
@@ -9,6 +9,7 @@ class ScreenBuffer{
 	int curx=0,cury=0;
 
 	void printstr(const char *buf);
+	int printf_varargs(const char *format,va_list ap);
 
 public:
 	ScreenBuffer(int W,int H);
-- 
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