source: libcf/trunk/src/cf_file.c@ 5

/**
 * cf_file.c
 */
#include "cf_file.h"

#ifdef _WIN32
# include <io.h>
# include <stdio.h>
#else // #ifdef _WIN32
# include <unistd.h>
#endif // #ifdef _WIN32

int
CF_File_Open (const char    * path,
              const int     flag)
{
    int result = open (path, flag, 0);

    if (result < 0)
        return CF_ERROR_FILE_OPEN;

    return result;
}

int
CF_File_Create (const char * path)
{
    int result = open (path, O_CREAT | O_WRONLY | O_TRUNC, 0);

    if (result < 0)
        return CF_ERROR_FILE_CREATE;

    return result;
}

int
CF_File_Close (const int fd)
{
    int result = 0;

    if (fd < 0)
        return CF_ERROR_FILE_INVALID_ARGS;

    result = close (fd);

    if (result < 0)
        return CF_ERROR_FILE_CLOSE;

    return CF_OK;
}

int
CF_File_Read (const int     fd,
              void          * buf,
              const size_t  len)
{
    int result = (int) read (fd, buf, len);

    if (result < 0)
        return CF_ERROR_FILE_READ;

    return CF_OK;
}

int
CF_File_Write (const int    fd,
               const void   * buf, 
               const size_t len)
{
    int result = (int) write (fd, buf, len);

    if (result != len)
      return CF_ERROR_FILE_WRITE;

    return CF_OK;
}

int
CF_File_GetSize (const int fd)
{
    int result = (int) lseek (fd, 0, SEEK_END);

    if (result < 0 || lseek (fd, 0, SEEK_SET) < 0)
        return CF_ERROR_FILE_GET_SIZE;

    return result;
}