1 files changed, 19 insertions, 1 deletions

diff --git a/source/cFile.cpp b/source/cFile.cpp
index 5ea71107a..cd61800e2 100644
--- a/source/cFile.cpp
+++ b/source/cFile.cpp
@@ -69,7 +69,7 @@ bool cFile::Open(const AString & iFileName, EMode iMode)
 	{

 		case fmRead:      Mode = "rb";  break;

 		case fmWrite:     Mode = "wb";  break;

-		case fmReadWrite: Mode = "ab+"; break;

+		case fmReadWrite: Mode = "rb+"; break;

 		default:

 		{

 			ASSERT(!"Unhandled file mode");

@@ -77,6 +77,14 @@ bool cFile::Open(const AString & iFileName, EMode iMode)
 		}

 	}

 	m_File = fopen(iFileName.c_str(), Mode);

+	if ((m_File == NULL) && (iMode == fmReadWrite))

+	{

+		// Fix for MS not following C spec, opening "a" mode files for writing at the end only

+		// The file open operation has been tried with "read update", fails if file not found

+		// So now we know either the file doesn't exist or we don't have rights, no need to worry about file contents.

+		// Simply re-open for read-writing, erasing existing contents:

+		m_File = fopen(iFileName.c_str(), "wb+");

+	}

 	return (m_File != NULL);

 }

 

@@ -251,3 +259,13 @@ int cFile::ReadRestOfFile(AString & a_Contents)
 

 

 

+

+bool cFile::Exists(const AString & a_FileName)

+{

+	cFile test(a_FileName, fmRead);

+	return test.IsOpen();

+}

+

+

+

+