source: libcf/trunk/src/cf_file.c@ 28

/**
 * @file    cf_file.c
 * @author  myusgun <myusgun@gmail.com>
 * @version 0.1
 */
#include "cf_file.h"

#ifdef _WIN32
# include <stdio.h>
# include <io.h>
# include <sys/stat.h>

# define S_IWUSR        _S_IWRITE
# define S_IRUSR        _S_IREAD
# define S_IXUSR        _S_IEXEC
# define S_IRGRP        0x00000000
# define S_IWGRP        0x00000000
# define S_IXGRP        0x00000000
# define S_IROTH        0x00000000
# define S_IWOTH        0x00000000
# define S_IXOTH        0x00000000
#else // #ifdef _WIN32
# include <unistd.h>
# define O_BINARY       0x00000000
#endif // #ifdef _WIN32

#define FILE_MODE       S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH

int
CF_File_Open (const char            * path,
              const CF_FILE_FLAG    flag)
{
    int result = open (path, flag|O_BINARY);

    if (result < 0)
        return CF_ERROR_FILE_OPEN;

    return result;
}

int
CF_File_Create (const char * path)
{
    int result = open (path, CF_FILE_CR|CF_FILE_WO|CF_FILE_TR, FILE_MODE);

    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 result;
}

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;
}