7741de1dbf
git-svn-id: http://mc-server.googlecode.com/svn/trunk@1436 0a769ca7-a7f5-676a-18bf-c427514a06d6
115 lines
2.9 KiB
C++
115 lines
2.9 KiB
C++
|
|
// cFile.h
|
|
|
|
// Interfaces to the cFile class providing an OS-independent abstraction of a file.
|
|
|
|
/*
|
|
The object is optimized towards binary reads.
|
|
The object has no multithreading locks, don't use from multiple threads!
|
|
Usage:
|
|
1, Construct a cFile instance (no-param constructor)
|
|
2, Open a file using Open(), check return value for success
|
|
3, Read / write
|
|
4, Destroy the instance
|
|
|
|
-- OR --
|
|
|
|
1, Construct a cFile instance opening the file (filename-param constructor)
|
|
2, Check if the file was opened using IsOpen()
|
|
3, Read / write
|
|
4, Destroy the instance
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
#pragma once
|
|
|
|
|
|
|
|
|
|
|
|
#ifndef _WIN32
|
|
#define USE_STDIO_FILE
|
|
#endif // _WIN32
|
|
|
|
// DEBUG:
|
|
#define USE_STDIO_FILE
|
|
|
|
|
|
|
|
|
|
|
|
class cFile
|
|
{
|
|
public:
|
|
#ifdef _WIN32
|
|
static const char PathSeparator = '\\';
|
|
#else
|
|
static const char PathSeparator = '/';
|
|
#endif
|
|
|
|
/// The mode in which to open the file
|
|
enum eMode
|
|
{
|
|
fmRead, // Read-only. If the file doesn't exist, object will not be valid
|
|
fmWrite, // Write-only. If the file already exists, it will be overwritten
|
|
fmReadWrite // Read/write. If the file already exists, it will be left intact; writing will overwrite the data from the beginning
|
|
} ;
|
|
|
|
/// Simple constructor - creates an unopened file object, use Open() to open / create a real file
|
|
cFile(void);
|
|
|
|
/// Constructs and opens / creates the file specified, use IsOpen() to check for success
|
|
cFile(const AString & iFileName, eMode iMode);
|
|
|
|
/// Auto-closes the file, if open
|
|
~cFile();
|
|
|
|
bool Open(const AString & iFileName, eMode iMode);
|
|
void Close(void);
|
|
bool IsOpen(void) const;
|
|
bool IsEOF(void) const;
|
|
|
|
/// Reads up to iNumBytes bytes into iBuffer, returns the number of bytes actually read, or -1 on failure; asserts if not open
|
|
int Read (void * iBuffer, int iNumBytes);
|
|
|
|
/// Writes up to iNumBytes bytes from iBuffer, returns the number of bytes actually written, or -1 on failure; asserts if not open
|
|
int Write(const void * iBuffer, int iNumBytes);
|
|
|
|
/// Seeks to iPosition bytes from file start, returns old position or -1 for failure; asserts if not open
|
|
int Seek (int iPosition);
|
|
|
|
/// Returns the current position (bytes from file start) or -1 for failure; asserts if not open
|
|
int Tell (void) const;
|
|
|
|
/// Returns the size of file, in bytes, or -1 for failure; asserts if not open
|
|
int GetSize(void) const;
|
|
|
|
/// Reads the file from current position till EOF into an AString; returns the number of bytes read or -1 for error
|
|
int ReadRestOfFile(AString & a_Contents);
|
|
|
|
/// Returns true if the file specified exists
|
|
static bool Exists(const AString & a_FileName);
|
|
|
|
/// Deletes a file, returns true if successful
|
|
static bool Delete(const AString & a_FileName);
|
|
|
|
/// Renames a file, returns true if successful. May fail if dest already exists (libc-dependant)!
|
|
static bool Rename(const AString & a_OrigFileName, const AString & a_NewFileName);
|
|
|
|
int Printf(const char * a_Fmt, ...);
|
|
|
|
private:
|
|
#ifdef USE_STDIO_FILE
|
|
FILE * m_File;
|
|
#else
|
|
HANDLE m_File;
|
|
#endif
|
|
} ;
|
|
|
|
|
|
|
|
|