109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
/* io.c -- portable io functions
|
|
|
|
This file is part of the LZO real-time data compression library.
|
|
|
|
Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
|
|
All Rights Reserved.
|
|
|
|
The LZO library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation; either version 2 of
|
|
the License, or (at your option) any later version.
|
|
|
|
The LZO library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with the LZO library; see the file COPYING.
|
|
If not, write to the Free Software Foundation, Inc.,
|
|
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
Markus F.X.J. Oberhumer
|
|
<markus@oberhumer.com>
|
|
*/
|
|
|
|
|
|
#include "lzo_conf.h"
|
|
#include <lzoutil.h>
|
|
|
|
|
|
#if !defined(NO_STDIO_H)
|
|
|
|
#include <stdio.h>
|
|
|
|
#undef lzo_fread
|
|
#undef lzo_fwrite
|
|
|
|
|
|
/***********************************************************************
|
|
//
|
|
************************************************************************/
|
|
|
|
LZO_PUBLIC(lzo_uint)
|
|
lzo_fread(LZO_FILEP ff, lzo_voidp s, lzo_uint len)
|
|
{
|
|
FILE *f = (FILE *) ff;
|
|
#if 1 && (LZO_UINT_MAX <= SIZE_T_MAX)
|
|
return fread(s,1,len,f);
|
|
#else
|
|
lzo_byte *p = (lzo_byte *) s;
|
|
lzo_uint l = 0;
|
|
size_t k;
|
|
unsigned char *b;
|
|
unsigned char buf[512];
|
|
|
|
while (l < len)
|
|
{
|
|
k = len - l > sizeof(buf) ? sizeof(buf) : (size_t) (len - l);
|
|
k = fread(buf,1,k,f);
|
|
if (k <= 0)
|
|
break;
|
|
l += k;
|
|
b = buf; do *p++ = *b++; while (--k > 0);
|
|
}
|
|
return l;
|
|
#endif
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
//
|
|
************************************************************************/
|
|
|
|
LZO_PUBLIC(lzo_uint)
|
|
lzo_fwrite(LZO_FILEP ff, const lzo_voidp s, lzo_uint len)
|
|
{
|
|
FILE *f = (FILE *) ff;
|
|
#if 1 && (LZO_UINT_MAX <= SIZE_T_MAX)
|
|
return fwrite(s,1,len,f);
|
|
#else
|
|
const lzo_byte *p = (const lzo_byte *) s;
|
|
lzo_uint l = 0;
|
|
size_t k, n;
|
|
unsigned char *b;
|
|
unsigned char buf[512];
|
|
|
|
while (l < len)
|
|
{
|
|
k = len - l > sizeof(buf) ? sizeof(buf) : (size_t) (len - l);
|
|
b = buf; n = k; do *b++ = *p++; while (--n > 0);
|
|
k = fwrite(buf,1,k,f);
|
|
if (k <= 0)
|
|
break;
|
|
l += k;
|
|
}
|
|
return l;
|
|
#endif
|
|
}
|
|
|
|
|
|
#endif /* !NO_STDIO_H */
|
|
|
|
|
|
/*
|
|
vi:ts=4:et
|
|
*/
|
|
//martysama0134's 2e58d0b8baeb072acdf3afc4a5d1999f
|