From 6931e8fa410da4cfeb7a5e4fbcb95b8ad9541853 Mon Sep 17 00:00:00 2001
From: Peter Veenstra <qbix79@users.sourceforge.net>
Date: Wed, 7 Aug 2002 10:23:35 +0000
Subject: [PATCH] fixed Localfile::write to truncate the file when zero data is
 written

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@116
---
 src/dos/drive_local.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/dos/drive_local.cpp b/src/dos/drive_local.cpp
index 5b8882f0..a24ad9cc 100644
--- a/src/dos/drive_local.cpp
+++ b/src/dos/drive_local.cpp
@@ -265,10 +265,15 @@ bool localFile::Read(Bit8u * data,Bit16u * size) {
 };
 
 bool localFile::Write(Bit8u * data,Bit16u * size) {
-	*size=fwrite(data,1,*size,fhandle);
+    if(*size==0){  
+        return (!ftruncate(fileno(fhandle),ftell(fhandle)));
+    }
+    else 
+    {
+    	*size=fwrite(data,1,*size,fhandle);
 	return true;
+    }
 }
-
 bool localFile::Seek(Bit32u * pos,Bit32u type) {
 	int seektype;
 	switch (type) {