Glenn Maynard
99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
/* RageFile - High-level file access. */
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#ifndef RAGE_FILE_H
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#define RAGE_FILE_H
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#include "RageFileBasic.h"
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/* This is the high-level interface, which interfaces with RageFileObj implementations
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* and RageFileManager. */
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class RageFile: public RageFileBasic
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{
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public:
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enum
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{
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READ = 0x1,
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WRITE = 0x2,
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/* Always write directly to the destination file; don't do a safe write. (for logs) */
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STREAMED = 0x4,
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/* Flush the file to disk on close. Combined with not streaming, this results
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* in very safe writes, but is slow. */
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SLOW_FLUSH = 0x8
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};
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RageFile();
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~RageFile() { Close(); }
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RageFile( const RageFile &cpy );
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RageFile *Copy() const;
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/*
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* Use GetRealPath to get the path this file was opened with; use that if you
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* want a path that will probably get you the same file again.
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*
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* GetPath can be overridden by drivers. Use it to get a path for display;
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* it may give more information, such as the name of the archive the file
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* is in. It has no parsable meaning.
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*/
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const RString &GetRealPath() const { return m_Path; }
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RString GetPath() const;
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bool Open( const RString& path, int mode = READ );
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void Close();
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bool IsOpen() const { return m_File != NULL; }
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bool AtEOF() const;
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RString GetError() const;
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void ClearError();
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int Tell() const;
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int Seek( int offset );
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int GetFileSize() const;
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/* Raw I/O: */
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int Read( void *buffer, size_t bytes );
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int Read( RString &buffer, int bytes = -1 );
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int Write( const void *buffer, size_t bytes );
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int Write( const RString& string ) { return Write( string.data(), string.size() ); }
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int Flush();
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/* These are just here to make wrappers (eg. vorbisfile, SDL_rwops) easier. */
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int Write( const void *buffer, size_t bytes, int nmemb );
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int Read( void *buffer, size_t bytes, int nmemb );
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int Seek( int offset, int whence );
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/* Line-based I/O: */
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int GetLine( RString &out );
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int PutLine( const RString &str );
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void EnableCRC32( bool on=true );
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bool GetCRC32( uint32_t *iRet );
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private:
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void SetError( const RString &err );
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RageFileBasic *m_File;
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RString m_Path;
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RString m_sError;
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int m_Mode;
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};
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/* Convenience wrappers for reading binary files. */
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namespace FileReading
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{
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/* On error, these set sError to the error message. If sError is already
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* non-empty, nothing happens. */
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void ReadBytes( RageFileBasic &f, void *buf, int size, RString &sError );
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void SkipBytes( RageFileBasic &f, int size, RString &sError );
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void Seek( RageFileBasic &f, int iOffset, RString &sError );
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RString ReadString( RageFileBasic &f, int size, RString &sError );
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uint8_t read_8( RageFileBasic &f, RString &sError );
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int16_t read_16_le( RageFileBasic &f, RString &sError );
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uint16_t read_u16_le( RageFileBasic &f, RString &sError );
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int32_t read_32_le( RageFileBasic &f, RString &sError );
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uint32_t read_u32_le( RageFileBasic &f, RString &sError );
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};
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#endif
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