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Cabinet.cpp in MakeCab.rar

			
// Cabinet.cpp: implementation of the CCabinet class.
//
//////////////////////////////////////////////////////////////////////

#include "Cabinet.h"


//下面是压缩时用到的回调函数。
/*
 * 分配内存
 */
FNFCIALLOC(mem_alloc)
{
	return malloc(cb);
}


/*
 * 释放内存
 */
FNFCIFREE(mem_free)
{
	free(memory);
}

/*
 * 打开文件
 */
FNFCIOPEN(fci_open)
{
    return _open(pszFile, oflag, pmode);
}

/*
 * 读取文件
 */
FNFCIREAD(fci_read)
{
    return (unsigned int) _read(hf, memory, cb);
}

/*
 * 写文件
 */
FNFCIWRITE(fci_write)
{
    return (unsigned int) _write(hf, memory, cb);
}

/*
 * 关闭文件
 */
FNFCICLOSE(fci_close)
{
   return _close(hf);
}

FNFCISEEK(fci_seek)
{
    return _lseek(hf, dist, seektype);
}

FNFCIDELETE(fci_delete)
{
    return remove(pszFile);
}


FNFCIFILEPLACED(file_placed)
{
	return 0;
}


FNFCIGETTEMPFILE(get_temp_file)
{
    char    *psz;

    psz = _tempnam("","xx");            // Get a name
    if ((psz != NULL) && (strlen(psz) < (unsigned)cbTempName)) {
        strcpy(pszTempName,psz);        // Copy to caller's buffer
        free(psz);                      // Free temporary name buffer
        return TRUE;                    // Success
    }
    //** Failed
    if (psz) {
        free(psz);
    }

    return FALSE;
}


/*
 * 用于压缩过程中的提示信息显示，这里忽略。
 */
FNFCISTATUS(progress)
{
	return 0;
}

/*
 * 这里忽略。
 */
FNFCIGETNEXTCABINET(get_next_cabinet)
{
	return TRUE;
}


FNFCIGETOPENINFO(get_open_info)
{
	BY_HANDLE_FILE_INFORMATION	finfo;
	FILETIME					filetime;
	HANDLE						handle;
    DWORD                       attrs;
    int                         hf;

    /*
     * Need a Win32 type handle to get file date/time
     * using the Win32 APIs, even though the handle we
     * will be returning is of the type compatible with
     * _open
     */
	handle = CreateFile(
		pszName,
		GENERIC_READ			

			...
			...
			... to be continued.

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