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the game where you go into mines and start crafting! but for consoles (forked directly from smartcmd's github)
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6.1 kB · 204 lines
C++
at master
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204#include "stdafx.h"
#include "File.h"#include "FileInputStream.h"
//Creates a FileInputStream by opening a connection to an actual file, the file named by the File object file in the file system.//A new FileDescriptor object is created to represent this file connection.//First, if there is a security manager, its checkRead method is called with the path represented by the file argument as its argument.////If the named file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading//then a FileNotFoundException is thrown.////Parameters://file - the file to be opened for reading.//Throws://FileNotFoundException - if the file does not exist, is a directory rather than a regular file, or for some other reason cannot be//opened for reading.//SecurityException - if a security manager exists and its checkRead method denies read access to the file.FileInputStream::FileInputStream(const File &file){ const char *pchFilename=wstringtofilename(file.getPath());#ifdef _UNICODE m_fileHandle = CreateFile( file.getPath().c_str(), // file name GENERIC_READ, // access mode 0, // share mode // TODO 4J Stu - Will we need to share file? Probably not but... NULL, // Unused OPEN_EXISTING , // how to create // TODO 4J Stu - Assuming that the file already exists if we are opening to read from it FILE_FLAG_SEQUENTIAL_SCAN, // file attributes NULL // Unsupported );#else m_fileHandle = CreateFile( pchFilename, // file name GENERIC_READ, // access mode 0, // share mode // TODO 4J Stu - Will we need to share file? Probably not but... NULL, // Unused OPEN_EXISTING , // how to create // TODO 4J Stu - Assuming that the file already exists if we are opening to read from it FILE_FLAG_SEQUENTIAL_SCAN, // file attributes NULL // Unsupported );#endif
if( m_fileHandle == INVALID_HANDLE_VALUE ) { // TODO 4J Stu - Any form of error/exception handling //__debugbreak(); app.FatalLoadError(); }}
FileInputStream::~FileInputStream(){ if( m_fileHandle != INVALID_HANDLE_VALUE ) CloseHandle( m_fileHandle );}
//Reads a byte of data from this input stream. This method blocks if no input is yet available.//Returns://the next byte of data, or -1 if the end of the file is reached.int FileInputStream::read(){ byte byteRead = 0; DWORD numberOfBytesRead;
BOOL bSuccess = ReadFile( m_fileHandle, // handle to file &byteRead, // data buffer 1, // number of bytes to read &numberOfBytesRead, // number of bytes read NULL // overlapped buffer );
if( bSuccess==FALSE ) { // TODO 4J Stu - Some kind of error handling app.FatalLoadError(); //return -1; } else if( numberOfBytesRead == 0 ) { // File pointer is past the end of the file return -1; }
return byteRead;}
//Reads up to b.length bytes of data from this input stream into an array of bytes. This method blocks until some input is available.//Parameters://b - the buffer into which the data is read.//Returns://the total number of bytes read into the buffer, or -1 if there is no more data because the end of the file has been reached.int FileInputStream::read(byteArray b){ DWORD numberOfBytesRead;
BOOL bSuccess = ReadFile( m_fileHandle, // handle to file b.data, // data buffer b.length, // number of bytes to read &numberOfBytesRead, // number of bytes read NULL // overlapped buffer );
if( bSuccess==FALSE ) { // TODO 4J Stu - Some kind of error handling app.FatalLoadError(); //return -1; } else if( numberOfBytesRead == 0 ) { // File pointer is past the end of the file return -1; }
return numberOfBytesRead;}
//Reads up to len bytes of data from this input stream into an array of bytes. If len is not zero, the method blocks until some input//is available; otherwise, no bytes are read and 0 is returned.//Parameters://b - the buffer into which the data is read.//off - the start offset in the destination array b//len - the maximum number of bytes read.//Returns://the total number of bytes read into the buffer, or -1 if there is no more data because the end of the file has been reached.int FileInputStream::read(byteArray b, unsigned int offset, unsigned int length){ // 4J Stu - We don't want to read any more than the array buffer can hold assert( length <= ( b.length - offset ) );
DWORD numberOfBytesRead;
BOOL bSuccess = ReadFile( m_fileHandle, // handle to file &b[offset], // data buffer length, // number of bytes to read &numberOfBytesRead, // number of bytes read NULL // overlapped buffer );
if( bSuccess==FALSE ) { // TODO 4J Stu - Some kind of error handling app.FatalLoadError(); //return -1; } else if( numberOfBytesRead == 0 ) { // File pointer is past the end of the file return -1; }
return numberOfBytesRead;}
//Closes this file input stream and releases any system resources associated with the stream.//If this stream has an associated channel then the channel is closed as well.void FileInputStream::close(){ if(m_fileHandle==INVALID_HANDLE_VALUE) { //printf("\n\nFileInputStream::close - TRYING TO CLOSE AN INVALID FILE HANDLE\n\n"); return; } BOOL result = CloseHandle( m_fileHandle );
if( result == 0 ) { // TODO 4J Stu - Some kind of error handling }
// Stop the dtor from trying to close it again m_fileHandle = INVALID_HANDLE_VALUE;}
//Skips n bytes of input from this input stream. Fewer bytes might be skipped if the end of the input stream is reached. The actual number k of bytes to be skipped is equal to the smaller of n and count-pos. The value k is added into pos and k is returned.//Overrides://skip in class InputStream//Parameters://n - the number of bytes to be skipped.//Returns://the actual number of bytes skipped.__int64 FileInputStream::skip(__int64 n){#ifdef _XBOX LARGE_INTEGER li; li.QuadPart = n; li.LowPart = SetFilePointer(m_fileHandle, li.LowPart, &li.HighPart, FILE_CURRENT);
if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) { li.QuadPart = 0; }
return li.QuadPart;#else return 0;#endif}