static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)
{
int fseek_origin=0;
long ret;
(void) opaque;
switch (origin)
{
case ZLIB_FILEFUNC_SEEK_CUR :
fseek_origin = SEEK_CUR;
break;
case ZLIB_FILEFUNC_SEEK_END :
fseek_origin = SEEK_END;
break;
case ZLIB_FILEFUNC_SEEK_SET :
fseek_origin = SEEK_SET;
break;
default: return -1;
}
ret = 0;
if(FSEEKO_FUNC((FILE *)stream, offset, fseek_origin) != 0)
ret = -1;
return ret;
}
int is_large_file(const char* filename)
{
ZPOS64_T pos = 0;
FILE* pFile = FOPEN_FUNC(filename, "rb");
if (pFile == NULL)
return 0;
FSEEKO_FUNC(pFile, 0, SEEK_END);
pos = FTELLO_FUNC(pFile);
fclose(pFile);
printf("File : %s is %lld bytes\n", filename, pos);
return (pos >= 0xffffffff);
}
int isLargeFile(const char* filename)
{
int largeFile = 0;
ZPOS64_T pos = 0;
FILE* pFile = FOPEN_FUNC(filename, "rb");
if(pFile != NULL)
{
int n = FSEEKO_FUNC(pFile, 0, SEEK_END);
pos = FTELLO_FUNC(pFile);
if(pos >= 0xffffffff)
largeFile = 1;
fclose(pFile);
}
return largeFile;
}
