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diff --git a/indra/llcommon/llfile.h b/indra/llcommon/llfile.h
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+/** 
+ * @file llfile.h
+ * @author Michael Schlachter
+ * @date 2006-03-23
+ * @brief Declaration of cross-platform POSIX file buffer and c++
+ * stream classes.
+ *
+ * Copyright (c) 2006-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LL_LLFILE_H
+#define LL_LLFILE_H
+
+/**
+ * This class provides a cross platform interface to the filesystem.
+ * Attempts to mostly mirror the POSIX style IO functions.
+ */
+
+#include <string>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <fstream>
+#include "stdtypes.h"
+
+typedef FILE	LLFILE;
+
+#ifdef LL_WINDOWS
+#define	USE_LLFILESTREAMS	1
+#else
+#define	USE_LLFILESTREAMS	0
+#endif
+
+
+#if LL_WINDOWS
+// windows version of stat function and stat data structure are called _stat
+typedef struct _stat	llstat;
+#else
+typedef struct stat		llstat;
+#endif
+
+class	LLFile
+{
+public:
+	// All these functions take UTF8 path/filenames.
+	static	LLFILE*	fopen(const char* filename,const char* accessmode);	/* Flawfinder: ignore */
+	static	LLFILE*	_fsopen(const char* filename,const char* accessmode,int	sharingFlag);
+
+	// perms is a permissions mask like 0777 or 0700.  In most cases it will
+	// be overridden by the user's umask.  It is ignored on Windows.
+	static	int		mkdir(const char* filename, int perms = 0700);
+
+	static	int		remove(const char* filename);
+	static	int		rename(const char* filename,const char*	newname);
+	static	int		stat(const char*	filename,llstat*	file_status);
+	static	LLFILE *	_Fiopen(const char *filename, std::ios::openmode mode,int);	// protection currently unused
+};
+
+
+#if USE_LLFILESTREAMS
+
+class	llifstream	:	public	std::basic_istream < char , std::char_traits < char > >
+{
+	// input stream associated with a C stream
+public:
+	typedef std::basic_ifstream<char,std::char_traits < char > > _Myt;
+	typedef std::basic_filebuf<char,std::char_traits< char > > _Myfb;
+	typedef std::basic_ios<char,std::char_traits< char > > _Myios;
+
+	llifstream()
+		: std::basic_istream<char,std::char_traits< char > >(NULL,true),_Filebuffer(NULL)
+	{	// construct unopened
+	}
+
+	explicit llifstream(const char *_Filename,
+		ios_base::openmode _Mode = ios_base::in,
+		int _Prot = (int)ios_base::_Openprot);
+
+	explicit llifstream(_Filet *_File)
+		: std::basic_istream<char,std::char_traits< char > >(NULL,true),
+			_Filebuffer(new _Myfb(_File))
+	{	// construct with specified C stream
+	}
+	virtual ~llifstream();
+
+	_Myfb *rdbuf() const
+	{	// return pointer to file buffer
+		return _Filebuffer;
+	}
+	bool is_open() const;
+	void open(const char *_Filename,
+		ios_base::openmode _Mode = ios_base::in,
+		int _Prot = (int)ios_base::_Openprot);	/* Flawfinder: ignore */
+	void close();
+
+private:
+	_Myfb* _Filebuffer;	// the file buffer
+};
+
+
+class	llofstream	:	public	std::basic_ostream< char , std::char_traits < char > >
+{
+public:
+	typedef std::basic_ostream< char , std::char_traits < char > > _Myt;
+	typedef std::basic_filebuf< char , std::char_traits < char > > _Myfb;
+	typedef std::basic_ios<char,std::char_traits < char > > _Myios;
+
+	llofstream()
+		: std::basic_ostream<char,std::char_traits < char > >(NULL,true),_Filebuffer(NULL)
+	{	// construct unopened
+	}
+
+	explicit llofstream(const char *_Filename,
+		std::ios_base::openmode _Mode = ios_base::out,
+		int _Prot = (int)std::ios_base::_Openprot);
+	
+
+	explicit llofstream(_Filet *_File)
+		: std::basic_ostream<char,std::char_traits < char > >(NULL,true),
+			_Filebuffer(new _Myfb(_File))//_File)
+	{	// construct with specified C stream
+	}
+
+	virtual ~llofstream();
+
+	_Myfb *rdbuf() const
+	{	// return pointer to file buffer
+		return _Filebuffer;
+	}
+
+	bool is_open() const;
+
+	void open(const char *_Filename,ios_base::openmode _Mode = ios_base::out,int _Prot = (int)ios_base::_Openprot);	/* Flawfinder: ignore */
+
+	void close();
+
+private:
+	_Myfb *_Filebuffer;	// the file buffer
+};
+
+
+
+#else
+//Use standard file streams on non windows platforms
+#define	llifstream	std::ifstream
+#define	llofstream	std::ofstream
+
+#endif
+
+
+#endif // not LL_LLFILE_H