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/src/FreeImage/Source/LibTIFF/tif_apple.c

https://bitbucket.org/cabalistic/ogredeps/
C | 281 lines | 192 code | 31 blank | 58 comment | 46 complexity | 833d12a58e3d6e6cade1e11a556c1d3c MD5 | raw file
  1/* $Header: /cvsroot/freeimage/FreeImage/Source/LibTIFF/tif_apple.c,v 1.37 2011/04/10 17:14:09 drolon Exp $ */
  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 * This code has been "Carbonized", and may not work with older MacOS versions.
 44 * If so, grab the tif_apple.c out of an older libtiff distribution, like
 45 * 3.5.5 from www.libtiff.org.
 46 */
 47
 48#include "tiffiop.h"
 49#include <Errors.h>
 50#include <Files.h>
 51#include <Memory.h>
 52#include <Script.h>
 53
 54#if defined(__PPCC__) || defined(__SC__) || defined(__MRC__) || defined(applec)
 55#define	CtoPstr	c2pstr
 56#endif
 57
 58static tsize_t
 59_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
 60{
 61	return (FSRead((short) fd, (long*) &size, (char*) buf) == noErr ?
 62	    size : (tsize_t) -1);
 63}
 64
 65static tsize_t
 66_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
 67{
 68	return (FSWrite((short) fd, (long*) &size, (char*) buf) == noErr ?
 69	    size : (tsize_t) -1);
 70}
 71
 72static toff_t
 73_tiffSeekProc(thandle_t fd, toff_t off, int whence)
 74{
 75	long fpos, size;
 76
 77	if (GetEOF((short) fd, &size) != noErr)
 78		return EOF;
 79	(void) GetFPos((short) fd, &fpos);
 80
 81	switch (whence) {
 82	case SEEK_CUR:
 83		if (off + fpos > size)
 84			SetEOF((short) fd, off + fpos);
 85		if (SetFPos((short) fd, fsFromMark, off) != noErr)
 86			return EOF;
 87		break;
 88	case SEEK_END:
 89		if (off > 0)
 90			SetEOF((short) fd, off + size);
 91		if (SetFPos((short) fd, fsFromStart, off + size) != noErr)
 92			return EOF;
 93		break;
 94	case SEEK_SET:
 95		if (off > size)
 96			SetEOF((short) fd, off);
 97		if (SetFPos((short) fd, fsFromStart, off) != noErr)
 98			return EOF;
 99		break;
100	}
101
102	return (toff_t)(GetFPos((short) fd, &fpos) == noErr ? fpos : EOF);
103}
104
105static int
106_tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
107{
108	return (0);
109}
110
111static void
112_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
113{
114}
115
116static int
117_tiffCloseProc(thandle_t fd)
118{
119	return (FSClose((short) fd));
120}
121
122static toff_t
123_tiffSizeProc(thandle_t fd)
124{
125	long size;
126
127	if (GetEOF((short) fd, &size) != noErr) {
128		TIFFErrorExt(fd, "_tiffSizeProc", "%s: Cannot get file size");
129		return (-1L);
130	}
131	return ((toff_t) size);
132}
133
134/*
135 * Open a TIFF file descriptor for read/writing.
136 */
137TIFF*
138TIFFFdOpen(int fd, const char* name, const char* mode)
139{
140	TIFF* tif;
141
142	tif = TIFFClientOpen(name, mode, (thandle_t) fd,
143	    _tiffReadProc, _tiffWriteProc, _tiffSeekProc, _tiffCloseProc,
144	    _tiffSizeProc, _tiffMapProc, _tiffUnmapProc);
145	if (tif)
146		tif->tif_fd = fd;
147	return (tif);
148}
149
150static void ourc2pstr( char* inString )
151{
152	int	sLen = strlen( inString );
153	BlockMoveData( inString, &inString[1], sLen );
154	inString[0] = sLen;
155}
156
157/*
158 * Open a TIFF file for read/writing.
159 */
160TIFF*
161TIFFOpen(const char* name, const char* mode)
162{
163	static const char module[] = "TIFFOpen";
164	Str255 pname;
165	FInfo finfo;
166	short fref;
167	OSErr err;
168	FSSpec	fSpec;
169
170	strcpy((char*) pname, name);
171	ourc2pstr((char*) pname);
172	
173	err = FSMakeFSSpec( 0, 0, pname, &fSpec );
174
175	switch (_TIFFgetMode(mode, module)) {
176	default:
177		return ((TIFF*) 0);
178	case O_RDWR | O_CREAT | O_TRUNC:
179		if (FSpGetFInfo(&fSpec, &finfo) == noErr)
180			FSpDelete(&fSpec);
181		/* fall through */
182	case O_RDWR | O_CREAT:
183		if ((err = FSpGetFInfo(&fSpec, &finfo)) == fnfErr) {
184			if (FSpCreate(&fSpec, '    ', 'TIFF', smSystemScript) != noErr)
185				goto badCreate;
186			if (FSpOpenDF(&fSpec, fsRdWrPerm, &fref) != noErr)
187				goto badOpen;
188		} else if (err == noErr) {
189			if (FSpOpenDF(&fSpec, fsRdWrPerm, &fref) != noErr)
190				goto badOpen;
191		} else
192			goto badOpen;
193		break;
194	case O_RDONLY:
195		if (FSpOpenDF(&fSpec, fsRdPerm, &fref) != noErr)
196			goto badOpen;
197		break;
198	case O_RDWR:
199		if (FSpOpenDF(&fSpec, fsRdWrPerm, &fref) != noErr)
200			goto badOpen;
201		break;
202	}
203	return (TIFFFdOpen((int) fref, name, mode));
204badCreate:
205	TIFFErrorExt(0, module, "%s: Cannot create", name);
206	return ((TIFF*) 0);
207badOpen:
208	TIFFErrorExt(0, module, "%s: Cannot open", name);
209	return ((TIFF*) 0);
210}
211
212void
213_TIFFmemset(tdata_t p, int v, tsize_t c)
214{
215	memset(p, v, (size_t) c);
216}
217
218void
219_TIFFmemcpy(tdata_t d, const tdata_t s, tsize_t c)
220{
221	memcpy(d, s, (size_t) c);
222}
223
224int
225_TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c)
226{
227	return (memcmp(p1, p2, (size_t) c));
228}
229
230tdata_t
231_TIFFmalloc(tsize_t s)
232{
233	return (NewPtr((size_t) s));
234}
235
236void
237_TIFFfree(tdata_t p)
238{
239	DisposePtr(p);
240}
241
242tdata_t
243_TIFFrealloc(tdata_t p, tsize_t s)
244{
245	Ptr n = p;
246
247	SetPtrSize(p, (size_t) s);
248	if (MemError() && (n = NewPtr((size_t) s)) != NULL) {
249		BlockMove(p, n, GetPtrSize(p));
250		DisposePtr(p);
251	}
252	return ((tdata_t) n);
253}
254
255static void
256appleWarningHandler(const char* module, const char* fmt, va_list ap)
257{
258	if (module != NULL)
259		fprintf(stderr, "%s: ", module);
260	fprintf(stderr, "Warning, ");
261	vfprintf(stderr, fmt, ap);
262	fprintf(stderr, ".\n");
263}
264TIFFErrorHandler _TIFFwarningHandler = appleWarningHandler;
265
266static void
267appleErrorHandler(const char* module, const char* fmt, va_list ap)
268{
269	if (module != NULL)
270		fprintf(stderr, "%s: ", module);
271	vfprintf(stderr, fmt, ap);
272	fprintf(stderr, ".\n");
273}
274TIFFErrorHandler _TIFFerrorHandler = appleErrorHandler;
275/*
276 * Local Variables:
277 * mode: c
278 * c-basic-offset: 8
279 * fill-column: 78
280 * End:
281 */