| 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 ATARI-specific Routines. |
| 29 | */ |
| 30 | #include "tiffiop.h" |
| 31 | #if defined(__TURBOC__) |
| 32 | #include <tos.h> |
| 33 | #include <stdio.h> |
| 34 | #else |
| 35 | #include <osbind.h> |
| 36 | #include <fcntl.h> |
| 37 | #endif |
| 38 | |
| 39 | #ifndef O_ACCMODE |
| 40 | #define O_ACCMODE 3 |
| 41 | #endif |
| 42 | |
| 43 | #include <errno.h> |
| 44 | |
| 45 | #define AEFILNF -33 |
| 46 | |
| 47 | static tsize_t |
| 48 | _tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size) |
| 49 | { |
| 50 | long r; |
| 51 | |
| 52 | r = Fread((int) fd, size, buf); |
| 53 | if (r < 0) { |
| 54 | errno = (int)-r; |
| 55 | r = -1; |
| 56 | } |
| 57 | return r; |
| 58 | } |
| 59 | |
| 60 | static tsize_t |
| 61 | _tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size) |
| 62 | { |
| 63 | long r; |
| 64 | |
| 65 | r = Fwrite((int) fd, size, buf); |
| 66 | if (r < 0) { |
| 67 | errno = (int)-r; |
| 68 | r = -1; |
| 69 | } |
| 70 | return r; |
| 71 | } |
| 72 | |
| 73 | static toff_t |
| 74 | _tiffSeekProc(thandle_t fd, off_t off, int whence) |
| 75 | { |
| 76 | char buf[256]; |
| 77 | long current_off, expected_off, new_off; |
| 78 | |
| 79 | if (whence == SEEK_END || off <= 0) |
| 80 | return Fseek(off, (int) fd, whence); |
| 81 | current_off = Fseek(0, (int) fd, SEEK_CUR); /* find out where we are */ |
| 82 | if (whence == SEEK_SET) |
| 83 | expected_off = off; |
| 84 | else |
| 85 | expected_off = off + current_off; |
| 86 | new_off = Fseek(off, (int) fd, whence); |
| 87 | if (new_off == expected_off) |
| 88 | return new_off; |
| 89 | /* otherwise extend file -- zero filling the hole */ |
| 90 | if (new_off < 0) /* error? */ |
| 91 | new_off = Fseek(0, (int) fd, SEEK_END); /* go to eof */ |
| 92 | _TIFFmemset(buf, 0, sizeof(buf)); |
| 93 | while (expected_off > new_off) { |
| 94 | off = expected_off - new_off; |
| 95 | if (off > sizeof(buf)) |
| 96 | off = sizeof(buf); |
| 97 | if ((current_off = Fwrite((int) fd, off, buf)) != off) |
| 98 | return (current_off > 0) ? |
| 99 | new_off + current_off : new_off; |
| 100 | new_off += off; |
| 101 | } |
| 102 | return new_off; |
| 103 | } |
| 104 | |
| 105 | static int |
| 106 | _tiffCloseProc(thandle_t fd) |
| 107 | { |
| 108 | long r; |
| 109 | |
| 110 | r = Fclose((int) fd); |
| 111 | if (r < 0) { |
| 112 | errno = (int)-r; |
| 113 | r = -1; |
| 114 | } |
| 115 | return (int)r; |
| 116 | } |
| 117 | |
| 118 | static toff_t |
| 119 | _tiffSizeProc(thandle_t fd) |
| 120 | { |
| 121 | long pos, eof; |
| 122 | |
| 123 | pos = Fseek(0, (int) fd, SEEK_CUR); |
| 124 | eof = Fseek(0, (int) fd, SEEK_END); |
| 125 | Fseek(pos, (int) fd, SEEK_SET); |
| 126 | return eof; |
| 127 | } |
| 128 | |
| 129 | static int |
| 130 | _tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize) |
| 131 | { |
| 132 | return (0); |
| 133 | } |
| 134 | |
| 135 | static void |
| 136 | _tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size) |
| 137 | { |
| 138 | } |
| 139 | |
| 140 | /* |
| 141 | * Open a TIFF file descriptor for read/writing. |
| 142 | */ |
| 143 | TIFF* |
| 144 | TIFFFdOpen(int fd, const char* name, const char* mode) |
| 145 | { |
| 146 | TIFF* tif; |
| 147 | |
| 148 | tif = TIFFClientOpen(name, mode, |
| 149 | (thandle_t) fd, |
| 150 | _tiffReadProc, _tiffWriteProc, _tiffSeekProc, _tiffCloseProc, |
| 151 | _tiffSizeProc, _tiffMapProc, _tiffUnmapProc); |
| 152 | if (tif) |
| 153 | tif->tif_fd = fd; |
| 154 | return (tif); |
| 155 | } |
| 156 | |
| 157 | /* |
| 158 | * Open a TIFF file for read/writing. |
| 159 | */ |
| 160 | TIFF* |
| 161 | TIFFOpen(const char* name, const char* mode) |
| 162 | { |
| 163 | static const char module[] = "TIFFOpen"; |
| 164 | int m; |
| 165 | long fd; |
| 166 | |
| 167 | m = _TIFFgetMode(mode, module); |
| 168 | if (m == -1) |
| 169 | return ((TIFF*)0); |
| 170 | if (m & O_TRUNC) { |
| 171 | fd = Fcreate(name, 0); |
| 172 | } else { |
| 173 | fd = Fopen(name, m & O_ACCMODE); |
| 174 | if (fd == AEFILNF && m & O_CREAT) |
| 175 | fd = Fcreate(name, 0); |
| 176 | } |
| 177 | if (fd < 0) |
| 178 | errno = (int)fd; |
| 179 | if (fd < 0) { |
| 180 | TIFFError(module, "%s: Cannot open", name); |
| 181 | return ((TIFF*)0); |
| 182 | } |
| 183 | return (TIFFFdOpen(fd, name, mode)); |
| 184 | } |
| 185 | |
| 186 | #include <stdlib.h> |
| 187 | |
| 188 | tdata_t |
| 189 | _TIFFmalloc(tsize_t s) |
| 190 | { |
| 191 | return (malloc((size_t) s)); |
| 192 | } |
| 193 | |
| 194 | void |
| 195 | _TIFFfree(tdata_t p) |
| 196 | { |
| 197 | free(p); |
| 198 | } |
| 199 | |
| 200 | tdata_t |
| 201 | _TIFFrealloc(tdata_t p, tsize_t s) |
| 202 | { |
| 203 | return (realloc(p, (size_t) s)); |
| 204 | } |
| 205 | |
| 206 | void |
| 207 | _TIFFmemset(tdata_t p, int v, size_t c) |
| 208 | { |
| 209 | memset(p, v, (size_t) c); |
| 210 | } |
| 211 | |
| 212 | void |
| 213 | _TIFFmemcpy(tdata_t d, const tdata_t s, size_t c) |
| 214 | { |
| 215 | memcpy(d, s, (size_t) c); |
| 216 | } |
| 217 | |
| 218 | int |
| 219 | _TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c) |
| 220 | { |
| 221 | return (memcmp(p1, p2, (size_t) c)); |
| 222 | } |
| 223 | |
| 224 | static void |
| 225 | atariWarningHandler(const char* module, const char* fmt, va_list ap) |
| 226 | { |
| 227 | if (module != NULL) |
| 228 | fprintf(stderr, "%s: ", module); |
| 229 | fprintf(stderr, "Warning, "); |
| 230 | vfprintf(stderr, fmt, ap); |
| 231 | fprintf(stderr, ".\n"); |
| 232 | } |
| 233 | TIFFErrorHandler _TIFFwarningHandler = atariWarningHandler; |
| 234 | |
| 235 | static void |
| 236 | atariErrorHandler(const char* module, const char* fmt, va_list ap) |
| 237 | { |
| 238 | if (module != NULL) |
| 239 | fprintf(stderr, "%s: ", module); |
| 240 | vfprintf(stderr, fmt, ap); |
| 241 | fprintf(stderr, ".\n"); |
| 242 | } |
| 243 | TIFFErrorHandler _TIFFerrorHandler = atariErrorHandler; |