src/tiff/tif_apple.c

   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 #ifdef __MACH__
  45           #include <ansi_prefix.mach.h>
  46           #include <msl_c_version.h>
  47           #include <stdint.h>
  48           #undef WCHAR_MAX
  49           #include <machine/ansi.h>
  50 #endif
  51 #include "tiffiop.h"
  52 #include <MacErrors.h>
  53 #include <Files.h>
  54 #include <Memory.h>
  55
  56 #if defined(__PPCC__) || defined(__SYMANTEC__) || defined(__MRC__) || defined(applec)
  57 #define CtoPstr c2pstr
  58 #endif
  59
  60 static tsize_t
  61 _tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
  62 {
  63         return (FSRead((short) fd, (long*) &size, (char*) buf) == noErr ?
  64             size : (tsize_t) -1);
  65 }
  66
  67 static tsize_t
  68 _tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
  69 {
  70         return (FSWrite((short) fd, (long*) &size, (char*) buf) == noErr ?
  71             size : (tsize_t) -1);
  72 }
  73
  74 static toff_t
  75 _tiffSeekProc(thandle_t fd, toff_t off, int whence)
  76 {
  77         long fpos, size;
  78
  79         if (GetEOF((short) fd, &size) != noErr)
  80                 return EOF;
  81         (void) GetFPos((short) fd, &fpos);
  82
  83         switch (whence) {
  84         case SEEK_CUR:
  85                 if (off + fpos > size)
  86                         SetEOF((short) fd, off + fpos);
  87                 if (SetFPos((short) fd, fsFromMark, off) != noErr)
  88                         return EOF;
  89                 break;
  90         case SEEK_END:
  91                 if (off > 0)
  92                         SetEOF((short) fd, off + size);
  93                 if (SetFPos((short) fd, fsFromStart, off + size) != noErr)
  94                         return EOF;
  95                 break;
  96         case SEEK_SET:
  97                 if (off > size)
  98                         SetEOF((short) fd, off);
  99                 if (SetFPos((short) fd, fsFromStart, off) != noErr)
 100                         return EOF;
 101                 break;
 102         }
 103
 104         return (toff_t)(GetFPos((short) fd, &fpos) == noErr ? fpos : EOF);
 105 }
 106
 107 static int
 108 _tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
 109 {
 110         return (0);
 111 }
 112
 113 static void
 114 _tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
 115 {
 116 }
 117
 118 static int
 119 _tiffCloseProc(thandle_t fd)
 120 {
 121         return (FSClose((short) fd));
 122 }
 123
 124 static toff_t
 125 _tiffSizeProc(thandle_t fd)
 126 {
 127         long size;
 128
 129         if (GetEOF((short) fd, &size) != noErr) {
 130                 TIFFError("_tiffSizeProc", "%s: Cannot get file size");
 131                 return (-1L);
 132         }
 133         return ((toff_t) size);
 134 }
 135
 136 /*
 137  * Open a TIFF file descriptor for read/writing.
 138  */
 139 TIFF*
 140 TIFFFdOpen(int fd, const char* name, const char* mode)
 141 {
 142         TIFF* tif;
 143
 144         tif = TIFFClientOpen(name, mode, (thandle_t) fd,
 145             _tiffReadProc, _tiffWriteProc, _tiffSeekProc, _tiffCloseProc,
 146             _tiffSizeProc, _tiffMapProc, _tiffUnmapProc);
 147         if (tif)
 148                 tif->tif_fd = fd;
 149         return (tif);
 150 }
 151
 152 /*
 153  * Open a TIFF file for read/writing.
 154  */
 155 TIFF*
 156 TIFFOpen(const char* name, const char* mode)
 157 {
 158         static const char module[] = "TIFFOpen";
 159         Str255 pname;
 160         FInfo finfo;
 161         short fref;
 162         OSErr err;
 163
 164         strcpy((char*) pname, name);
 165         CtoPstr((char*) pname);
 166
 167         switch (_TIFFgetMode(mode, module)) {
 168         default:
 169                 return ((TIFF*) 0);
 170         case O_RDWR | O_CREAT | O_TRUNC:
 171                 if (GetFInfo(pname, 0, &finfo) == noErr)
 172                         FSDelete(pname, 0);
 173                 /* fall through */
 174         case O_RDWR | O_CREAT:
 175                 if ((err = GetFInfo(pname, 0, &finfo)) == fnfErr) {
 176                         if (Create(pname, 0, '    ', 'TIFF') != noErr)
 177                                 goto badCreate;
 178                         if (FSOpen(pname, 0, &fref) != noErr)
 179                                 goto badOpen;
 180                 } else if (err == noErr) {
 181                         if (FSOpen(pname, 0, &fref) != noErr)
 182                                 goto badOpen;
 183                 } else
 184                         goto badOpen;
 185                 break;
 186         case O_RDONLY:
 187         case O_RDWR:
 188                 if (FSOpen(pname, 0, &fref) != noErr)
 189                         goto badOpen;
 190                 break;
 191         }
 192         return (TIFFFdOpen((int) fref, name, mode));
 193 badCreate:
 194         TIFFError(module, "%s: Cannot create", name);
 195         return ((TIFF*) 0);
 196 badOpen:
 197         TIFFError(module, "%s: Cannot open", name);
 198         return ((TIFF*) 0);
 199 }
 200
 201 void
 202 _TIFFmemset(tdata_t p, int v, tsize_t c)
 203 {
 204         memset(p, v, (size_t) c);
 205 }
 206
 207 void
 208 _TIFFmemcpy(tdata_t d, const tdata_t s, tsize_t c)
 209 {
 210         memcpy(d, s, (size_t) c);
 211 }
 212
 213 int
 214 _TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c)
 215 {
 216         return (memcmp(p1, p2, (size_t) c));
 217 }
 218
 219 tdata_t
 220 _TIFFmalloc(tsize_t s)
 221 {
 222         return (NewPtr((size_t) s));
 223 }
 224
 225 void
 226 _TIFFfree(tdata_t p)
 227 {
 228         DisposePtr(p);
 229 }
 230
 231 tdata_t
 232 _TIFFrealloc(tdata_t p, tsize_t s)
 233 {
 234         Ptr n = p;
 235
 236         SetPtrSize(p, (size_t) s);
 237         if (MemError() && (n = NewPtr((size_t) s)) != NULL) {
 238                 BlockMove(p, n, GetPtrSize(p));
 239                 DisposePtr(p);
 240         }
 241         return ((tdata_t) n);
 242 }
 243
 244 static void
 245 appleWarningHandler(const char* module, const char* fmt, va_list ap)
 246 {
 247         if (module != NULL)
 248                 fprintf(stderr, "%s: ", module);
 249         fprintf(stderr, "Warning, ");
 250         vfprintf(stderr, fmt, ap);
 251         fprintf(stderr, ".\n");
 252 }
 253 TIFFErrorHandler _TIFFwarningHandler = appleWarningHandler;
 254
 255 static void
 256 appleErrorHandler(const char* module, const char* fmt, va_list ap)
 257 {
 258         if (module != NULL)
 259                 fprintf(stderr, "%s: ", module);
 260         vfprintf(stderr, fmt, ap);
 261         fprintf(stderr, ".\n");
 262 }
 263 TIFFErrorHandler _TIFFerrorHandler = appleErrorHandler;