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/* "$Header: /cvsroot/freeimage/FreeImage/Source/LibTIFF/tif_atari.c,v 1.37 2011/04/10 17:14:09 drolon Exp $" */
/*
* Copyright (c) 1988-1997 Sam Leffler
* Copyright (c) 1991-1997 Silicon Graphics, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
/*
* TIFF Library ATARI-specific Routines.
*/
#include "tiffiop.h"
#if defined(__TURBOC__)
#include <tos.h>
#include <stdio.h>
#else
#include <osbind.h>
#include <fcntl.h>
#endif
#ifndef O_ACCMODE
#define O_ACCMODE 3
#endif
#include <errno.h>
#define AEFILNF -33
static tsize_t
_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
{
long r;
r = Fread((int) fd, size, buf);
if (r < 0) {
errno = (int)-r;
r = -1;
}
return r;
}
static tsize_t
_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
{
long r;
r = Fwrite((int) fd, size, buf);
if (r < 0) {
errno = (int)-r;
r = -1;
}
return r;
}
static toff_t
_tiffSeekProc(thandle_t fd, off_t off, int whence)
{
char buf[256];
long current_off, expected_off, new_off;
if (whence == SEEK_END || off <= 0)
return Fseek(off, (int) fd, whence);
current_off = Fseek(0, (int) fd, SEEK_CUR); /* find out where we are */
if (whence == SEEK_SET)
expected_off = off;
else
expected_off = off + current_off;
new_off = Fseek(off, (int) fd, whence);
if (new_off == expected_off)
return new_off;
/* otherwise extend file -- zero filling the hole */
if (new_off < 0) /* error? */
new_off = Fseek(0, (int) fd, SEEK_END); /* go to eof */
_TIFFmemset(buf, 0, sizeof(buf));
while (expected_off > new_off) {
off = expected_off - new_off;
if (off > sizeof(buf))
off = sizeof(buf);
if ((current_off = Fwrite((int) fd, off, buf)) != off)
return (current_off > 0) ?
new_off + current_off : new_off;
new_off += off;
}
return new_off;
}
static int
_tiffCloseProc(thandle_t fd)
{
long r;
r = Fclose((int) fd);
if (r < 0) {
errno = (int)-r;
r = -1;
}
return (int)r;
}
static toff_t
_tiffSizeProc(thandle_t fd)
{
long pos, eof;
pos = Fseek(0, (int) fd, SEEK_CUR);
eof = Fseek(0, (int) fd, SEEK_END);
Fseek(pos, (int) fd, SEEK_SET);
return eof;
}
static int
_tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
{
return (0);
}
static void
_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
{
}
/*
* Open a TIFF file descriptor for read/writing.
*/
TIFF*
TIFFFdOpen(int fd, const char* name, const char* mode)
{
TIFF* tif;
tif = TIFFClientOpen(name, mode,
(thandle_t) fd,
_tiffReadProc, _tiffWriteProc, _tiffSeekProc, _tiffCloseProc,
_tiffSizeProc, _tiffMapProc, _tiffUnmapProc);
if (tif)
tif->tif_fd = fd;
return (tif);
}
/*
* Open a TIFF file for read/writing.
*/
TIFF*
TIFFOpen(const char* name, const char* mode)
{
static const char module[] = "TIFFOpen";
int m;
long fd;
m = _TIFFgetMode(mode, module);
if (m == -1)
return ((TIFF*)0);
if (m & O_TRUNC) {
fd = Fcreate(name, 0);
} else {
fd = Fopen(name, m & O_ACCMODE);
if (fd == AEFILNF && m & O_CREAT)
fd = Fcreate(name, 0);
}
if (fd < 0)
errno = (int)fd;
if (fd < 0) {
TIFFErrorExt(0, module, "%s: Cannot open", name);
return ((TIFF*)0);
}
return (TIFFFdOpen(fd, name, mode));
}
#include <stdlib.h>
tdata_t
_TIFFmalloc(tsize_t s)
{
return (malloc((size_t) s));
}
void
_TIFFfree(tdata_t p)
{
free(p);
}
tdata_t
_TIFFrealloc(tdata_t p, tsize_t s)
{
return (realloc(p, (size_t) s));
}
void
_TIFFmemset(tdata_t p, int v, size_t c)
{
memset(p, v, (size_t) c);
}
void
_TIFFmemcpy(tdata_t d, const tdata_t s, size_t c)
{
memcpy(d, s, (size_t) c);
}
int
_TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c)
{
return (memcmp(p1, p2, (size_t) c));
}
static void
atariWarningHandler(const char* module, const char* fmt, va_list ap)
{
if (module != NULL)
fprintf(stderr, "%s: ", module);
fprintf(stderr, "Warning, ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, ".\n");
}
TIFFErrorHandler _TIFFwarningHandler = atariWarningHandler;
static void
atariErrorHandler(const char* module, const char* fmt, va_list ap)
{
if (module != NULL)
fprintf(stderr, "%s: ", module);
vfprintf(stderr, fmt, ap);
fprintf(stderr, ".\n");
}
TIFFErrorHandler _TIFFerrorHandler = atariErrorHandler;
/*
* Local Variables:
* mode: c
* c-basic-offset: 8
* fill-column: 78
* End:
*/
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