mirror of
https://github.com/reactos/reactos.git
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199 lines
3.5 KiB
C++
199 lines
3.5 KiB
C++
/*
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* PROJECT: ReactOS cabinet manager
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* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
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* PURPOSE: CCFDATAStorage class implementation for Linux/Unix
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* COPYRIGHT: Copyright 2017 Casper S. Hornstrup (chorns@users.sourceforge.net)
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* Copyright 2017 Colin Finck <mail@colinfinck.de>
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* Copyright 2018 Dmitry Bagdanov <dimbo_job@mail.ru>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#if !defined(_WIN32)
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#include <dirent.h>
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#endif
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#include "cabinet.h"
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#include "raw.h"
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#include "mszip.h"
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#if !defined(CAB_READ_ONLY)
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/**
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* @name CCFDATAStorage class
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* @implemented
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*
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* Default constructor
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*/
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CCFDATAStorage::CCFDATAStorage()
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{
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FileHandle = NULL;
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}
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/**
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* @name CCFDATAStorage class
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* @implemented
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*
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* Default destructor
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*/
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CCFDATAStorage::~CCFDATAStorage()
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{
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ASSERT(FileHandle == NULL);
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}
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/**
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* @name CCFDATAStorage class
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* @implemented
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*
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* Creates the file
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*
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* @return
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* Status of operation
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*/
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ULONG CCFDATAStorage::Create()
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{
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if ((FileHandle = tmpfile()) == NULL)
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return CAB_STATUS_CANNOT_CREATE;
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return CAB_STATUS_SUCCESS;
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}
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/**
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* @name CCFDATAStorage class
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* @implemented
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*
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* Destroys the file
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*
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* @return
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* Status of operation
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*/
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ULONG CCFDATAStorage::Destroy()
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{
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ASSERT(FileHandle != NULL);
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fclose(FileHandle);
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FileHandle = NULL;
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return CAB_STATUS_SUCCESS;
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}
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/**
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* @name CCFDATAStorage class
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* @implemented
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*
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* Truncate the scratch file to zero bytes
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*
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* @return
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* Status of operation
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*/
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ULONG CCFDATAStorage::Truncate()
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{
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fclose(FileHandle);
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FileHandle = tmpfile();
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if (FileHandle == NULL)
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{
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DPRINT(MID_TRACE, ("ERROR '%i'.\n", errno));
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return CAB_STATUS_FAILURE;
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}
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return CAB_STATUS_SUCCESS;
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}
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/**
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* @name CCFDATAStorage class
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* @implemented
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*
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* Returns current position in file
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*
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* @return
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* Current position
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*/
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ULONG CCFDATAStorage::Position()
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{
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return (ULONG)ftell(FileHandle);
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}
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/**
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* @name CCFDATAStorage class
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* @implemented
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*
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* Seeks to an absolute position
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*
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* @param Position
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* Absolute position to seek to
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*
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* @return
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* Status of operation
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*/
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ULONG CCFDATAStorage::Seek(LONG Position)
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{
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if (fseek(FileHandle, (off_t)Position, SEEK_SET) != 0)
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return CAB_STATUS_FAILURE;
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else
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return CAB_STATUS_SUCCESS;
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}
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/**
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* @name CCFDATAStorage class
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* @implemented
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*
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* Reads a CFDATA block from the file
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*
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* @param Data
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* Pointer to CFDATA block for the buffer
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*
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* @param Buffer
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* Pointer to buffer to store data read
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*
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* @param BytesRead
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* Pointer to buffer to write number of bytes read
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*
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* @return
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* Status of operation
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*/
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ULONG CCFDATAStorage::ReadBlock(PCFDATA Data, void* Buffer, PULONG BytesRead)
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{
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*BytesRead = fread(Buffer, 1, Data->CompSize, FileHandle);
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if (*BytesRead != Data->CompSize)
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return CAB_STATUS_CANNOT_READ;
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return CAB_STATUS_SUCCESS;
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}
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/**
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* @name CCFDATAStorage class
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* @implemented
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*
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* Writes a CFDATA block to the file
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*
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* @param Data
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* Pointer to CFDATA block for the buffer
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*
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* @param Buffer
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* Pointer to buffer with data to write
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*
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* @param BytesWritten
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* Pointer to buffer to write number of bytes written
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*
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* @return
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* Status of operation
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*/
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ULONG CCFDATAStorage::WriteBlock(PCFDATA Data, void* Buffer, PULONG BytesWritten)
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{
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*BytesWritten = fwrite(Buffer, 1, Data->CompSize, FileHandle);
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if (*BytesWritten != Data->CompSize)
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return CAB_STATUS_CANNOT_WRITE;
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return CAB_STATUS_SUCCESS;
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}
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#endif /* CAB_READ_ONLY */
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