This is tif_apple.c in view mode; [Download] [Up]
#ifndef lint
static char rcsid[] = "$Header: /usr/people/sam/tiff/libtiff/RCS/tif_apple.c,v 1.13 93/08/25 09:15:36 sam Exp $";
#endif
/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler
* Copyright (c) 1991, 1992 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 Macintosh-specific routines.
*
* These routines use only Toolbox and high-level File Manager traps.
* They make no calls to the THINK C "unix" compatibility library. Also,
* malloc is not used directly but it is still referenced internally by
* the ANSI library in rare cases. Heap fragmentation by the malloc ring
* buffer is therefore minimized.
*
* O_RDONLY and O_RDWR are treated identically here. The tif_mode flag is
* checked in TIFFWriteCheck().
*
* Create below fills in a blank creator signature and sets the file type
* to 'TIFF'. It is much better for the application to do this by Create'ing
* the file first and TIFFOpen'ing it later.
*/
#include "tiffiop.h"
#include <Errors.h>
#include <Files.h>
#include <Memory.h>
#ifdef applec
#define CtoPstr c2pstr
#endif
static tsize_t
_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
{
return (FSRead((short) fd, (long*) &size, (char*) buf) == noErr ?
size : (tsize_t) -1);
}
static tsize_t
_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
{
return (FSWrite((short) fd, (long*) &size, (char*) buf) == noErr ?
size : (tsize_t) -1);
}
static toff_t
_tiffSeekProc(thandle_t fd, toff_t off, int whence)
{
long fpos, size;
if (GetEOF((short) fd, &size) != noErr)
return EOF;
(void) GetFPos((short) fd, &fpos);
switch (whence) {
case SEEK_CUR:
if (off + fpos > size)
SetEOF((short) fd, off + fpos);
if (SetFPos((short) fd, fsFromMark, off) != noErr)
return EOF;
break;
case SEEK_END:
if (off > 0)
SetEOF((short) fd, off + size);
if (SetFPos((short) fd, fsFromStart, off + size) != noErr)
return EOF;
break;
case SEEK_SET:
if (off > size)
SetEOF((short) fd, off);
if (SetFPos((short) fd, fsFromStart, off) != noErr)
return EOF;
break;
}
return (toff_t)(GetFPos((short) fd, &fpos) == noErr ? fpos : 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)
{
}
static int
_tiffCloseProc(thandle_t fd)
{
return (FSClose((short) fd));
}
static toff_t
_tiffSizeProc(thandle_t fd)
{
long size;
if (GetEOF((short) fd, &size) != noErr) {
TIFFError("_tiffSizeProc", "%s: Cannot get file size");
return (-1L);
}
return ((toff_t) size);
}
void *
_TIFFmalloc(size_t s)
{
return (NewPtr(s));
}
void
_TIFFfree(void* p)
{
DisposePtr(p);
}
void *
_TIFFrealloc(void* p, size_t s)
{
Ptr n = p;
SetPtrSize(p, s);
if (MemError() && (n = NewPtr(s)) != NULL) {
BlockMove(p, n, GetPtrSize(p));
DisposePtr(p);
}
return (n);
}
/*
* 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";
Str255 pname;
FInfo finfo;
short fref;
OSErr err;
strcpy((char*) pname, name);
CtoPstr((char*) pname);
switch (_TIFFgetMode(mode, module)) {
default:
return ((TIFF*) 0);
case O_RDWR | O_CREAT | O_TRUNC:
if (GetFInfo(pname, 0, &finfo) == noErr)
FSDelete(pname, 0);
/* fall through */
case O_RDWR | O_CREAT:
if ((err = GetFInfo(pname, 0, &finfo)) == fnfErr) {
if (Create(pname, 0, ' ', 'TIFF') != noErr)
goto badCreate;
if (FSOpen(pname, 0, &fref) != noErr)
goto badOpen;
} else if (err == noErr) {
if (FSOpen(pname, 0, &fref) != noErr)
goto badOpen;
} else
goto badOpen;
break;
case O_RDONLY:
case O_RDWR:
if (FSOpen(pname, 0, &fref) != noErr)
goto badOpen;
break;
}
return (TIFFFdOpen((int) fref, name, mode));
badCreate:
TIFFError(module, "%s: Cannot create", name);
return ((TIFF*) 0);
badOpen:
TIFFError(module, "%s: Cannot open", name);
return ((TIFF*) 0);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.