File: tif_apple.c

package info (click to toggle)
libtiff3 3.4beta037-4
  • links: PTS
  • area: main
  • in suites: hamm
  • size: 2,732 kB
  • ctags: 3,274
  • sloc: ansic: 32,425; sh: 2,610; makefile: 1,515
file content (256 lines) | stat: -rw-r--r-- 6,249 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
/* $Header: /d1/sam/tiff/libtiff/RCS/tif_apple.c,v 1.23 1997/08/29 21:45:45 sam 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 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;