| 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; |