src/tiff/tif_apple.c

/* $Header$ */

/*
 * 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 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>

#if defined(__PPCC__) || defined(__SC__) || defined(__MRC__) || defined(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);
}

/*
 * 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);
}

void
_TIFFmemset(tdata_t p, int v, tsize_t c)
{
	memset(p, v, (size_t) c);
}

void
_TIFFmemcpy(tdata_t d, const tdata_t s, tsize_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));
}

tdata_t
_TIFFmalloc(tsize_t s)
{
	return (NewPtr((size_t) s));
}

void
_TIFFfree(tdata_t p)
{
	DisposePtr(p);
}

tdata_t
_TIFFrealloc(tdata_t p, tsize_t s)
{
	Ptr n = p;

	SetPtrSize(p, (size_t) s);
	if (MemError() && (n = NewPtr((size_t) s)) != NULL) {
		BlockMove(p, n, GetPtrSize(p));
		DisposePtr(p);
	}
	return ((tdata_t) n);
}

static void
appleWarningHandler(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 = appleWarningHandler;

static void
appleErrorHandler(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 = appleErrorHandler;
Commit	Line	Data
	1	/* $Header$ */
	2
	3	/*
	4	* Copyright (c) 1988-1997 Sam Leffler
	5	* Copyright (c) 1991-1997 Silicon Graphics, Inc.
	6	*
	7	* Permission to use, copy, modify, distribute, and sell this software and
	8	* its documentation for any purpose is hereby granted without fee, provided
	9	* that (i) the above copyright notices and this permission notice appear in
	10	* all copies of the software and related documentation, and (ii) the names of
	11	* Sam Leffler and Silicon Graphics may not be used in any advertising or
	12	* publicity relating to the software without the specific, prior written
	13	* permission of Sam Leffler and Silicon Graphics.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
	16	* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
	17	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	18	*
	19	* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
	20	* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
	21	* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
	22	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
	23	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
	24	* OF THIS SOFTWARE.
	25	*/
	26
	27	/*
	28	* TIFF Library Macintosh-specific routines.
	29	*
	30	* These routines use only Toolbox and high-level File Manager traps.
	31	* They make no calls to the THINK C "unix" compatibility library. Also,
	32	* malloc is not used directly but it is still referenced internally by
	33	* the ANSI library in rare cases. Heap fragmentation by the malloc ring
	34	* buffer is therefore minimized.
	35	*
	36	* O_RDONLY and O_RDWR are treated identically here. The tif_mode flag is
	37	* checked in TIFFWriteCheck().
	38	*
	39	* Create below fills in a blank creator signature and sets the file type
	40	* to 'TIFF'. It is much better for the application to do this by Create'ing
	41	* the file first and TIFFOpen'ing it later.
	42	*/
	43
	44	#include "tiffiop.h"
	45	#include <Errors.h>
	46	#include <Files.h>
	47	#include <Memory.h>
	48
	49	#if defined(__PPCC__) \|\| defined(__SC__) \|\| defined(__MRC__) \|\| defined(applec)
	50	#define CtoPstr c2pstr
	51	#endif
	52
	53	static tsize_t
	54	_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
	55	{
	56	return (FSRead((short) fd, (long) &size, (char) buf) == noErr ?
	57	size : (tsize_t) -1);
	58	}
	59
	60	static tsize_t
	61	_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
	62	{
	63	return (FSWrite((short) fd, (long) &size, (char) buf) == noErr ?
	64	size : (tsize_t) -1);
	65	}
	66
	67	static toff_t
	68	_tiffSeekProc(thandle_t fd, toff_t off, int whence)
	69	{
	70	long fpos, size;
	71
	72	if (GetEOF((short) fd, &size) != noErr)
	73	return EOF;
	74	(void) GetFPos((short) fd, &fpos);
	75
	76	switch (whence) {
	77	case SEEK_CUR:
	78	if (off + fpos > size)
	79	SetEOF((short) fd, off + fpos);
	80	if (SetFPos((short) fd, fsFromMark, off) != noErr)
	81	return EOF;
	82	break;
	83	case SEEK_END:
	84	if (off > 0)
	85	SetEOF((short) fd, off + size);
	86	if (SetFPos((short) fd, fsFromStart, off + size) != noErr)
	87	return EOF;
	88	break;
	89	case SEEK_SET:
	90	if (off > size)
	91	SetEOF((short) fd, off);
	92	if (SetFPos((short) fd, fsFromStart, off) != noErr)
	93	return EOF;
	94	break;
	95	}
	96
	97	return (toff_t)(GetFPos((short) fd, &fpos) == noErr ? fpos : EOF);
	98	}
	99
	100	static int
	101	_tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
	102	{
	103	return (0);
	104	}
	105
	106	static void
	107	_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
	108	{
	109	}
	110
	111	static int
	112	_tiffCloseProc(thandle_t fd)
	113	{
	114	return (FSClose((short) fd));
	115	}
	116
	117	static toff_t
	118	_tiffSizeProc(thandle_t fd)
	119	{
	120	long size;
	121
	122	if (GetEOF((short) fd, &size) != noErr) {
	123	TIFFError("_tiffSizeProc", "%s: Cannot get file size");
	124	return (-1L);
	125	}
	126	return ((toff_t) size);
	127	}
	128
	129	/*
	130	* Open a TIFF file descriptor for read/writing.
	131	*/
	132	TIFF*
	133	TIFFFdOpen(int fd, const char* name, const char* mode)
	134	{
	135	TIFF* tif;
	136
	137	tif = TIFFClientOpen(name, mode, (thandle_t) fd,
	138	_tiffReadProc, _tiffWriteProc, _tiffSeekProc, _tiffCloseProc,
	139	_tiffSizeProc, _tiffMapProc, _tiffUnmapProc);
	140	if (tif)
	141	tif->tif_fd = fd;
	142	return (tif);
	143	}
	144
	145	/*
	146	* Open a TIFF file for read/writing.
	147	*/
	148	TIFF*
	149	TIFFOpen(const char* name, const char* mode)
	150	{
	151	static const char module[] = "TIFFOpen";
	152	Str255 pname;
	153	FInfo finfo;
	154	short fref;
	155	OSErr err;
	156
	157	strcpy((char*) pname, name);
	158	CtoPstr((char*) pname);
	159
	160	switch (_TIFFgetMode(mode, module)) {
	161	default:
	162	return ((TIFF*) 0);
	163	case O_RDWR \| O_CREAT \| O_TRUNC:
	164	if (GetFInfo(pname, 0, &finfo) == noErr)
	165	FSDelete(pname, 0);
	166	/* fall through */
	167	case O_RDWR \| O_CREAT:
	168	if ((err = GetFInfo(pname, 0, &finfo)) == fnfErr) {
	169	if (Create(pname, 0, ' ', 'TIFF') != noErr)
	170	goto badCreate;
	171	if (FSOpen(pname, 0, &fref) != noErr)
	172	goto badOpen;
	173	} else if (err == noErr) {
	174	if (FSOpen(pname, 0, &fref) != noErr)
	175	goto badOpen;
	176	} else
	177	goto badOpen;
	178	break;
	179	case O_RDONLY:
	180	case O_RDWR:
	181	if (FSOpen(pname, 0, &fref) != noErr)
	182	goto badOpen;
	183	break;
	184	}
	185	return (TIFFFdOpen((int) fref, name, mode));
	186	badCreate:
	187	TIFFError(module, "%s: Cannot create", name);
	188	return ((TIFF*) 0);
	189	badOpen:
	190	TIFFError(module, "%s: Cannot open", name);
	191	return ((TIFF*) 0);
	192	}
	193
	194	void
	195	_TIFFmemset(tdata_t p, int v, tsize_t c)
	196	{
	197	memset(p, v, (size_t) c);
	198	}
	199
	200	void
	201	_TIFFmemcpy(tdata_t d, const tdata_t s, tsize_t c)
	202	{
	203	memcpy(d, s, (size_t) c);
	204	}
	205
	206	int
	207	_TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c)
	208	{
	209	return (memcmp(p1, p2, (size_t) c));
	210	}
	211
	212	tdata_t
	213	_TIFFmalloc(tsize_t s)
	214	{
	215	return (NewPtr((size_t) s));
	216	}
	217
	218	void
	219	_TIFFfree(tdata_t p)
	220	{
	221	DisposePtr(p);
	222	}
	223
	224	tdata_t
	225	_TIFFrealloc(tdata_t p, tsize_t s)
	226	{
	227	Ptr n = p;
	228
	229	SetPtrSize(p, (size_t) s);
	230	if (MemError() && (n = NewPtr((size_t) s)) != NULL) {
	231	BlockMove(p, n, GetPtrSize(p));
	232	DisposePtr(p);
	233	}
	234	return ((tdata_t) n);
	235	}
	236
	237	static void
	238	appleWarningHandler(const char* module, const char* fmt, va_list ap)
	239	{
	240	if (module != NULL)
	241	fprintf(stderr, "%s: ", module);
	242	fprintf(stderr, "Warning, ");
	243	vfprintf(stderr, fmt, ap);
	244	fprintf(stderr, ".\n");
	245	}
	246	TIFFErrorHandler _TIFFwarningHandler = appleWarningHandler;
	247
	248	static void
	249	appleErrorHandler(const char* module, const char* fmt, va_list ap)
	250	{
	251	if (module != NULL)
	252	fprintf(stderr, "%s: ", module);
	253	vfprintf(stderr, fmt, ap);
	254	fprintf(stderr, ".\n");
	255	}
	256	TIFFErrorHandler _TIFFerrorHandler = appleErrorHandler;