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1 | /* "$Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_atari.c,v 1.2 2005/12/21 12:23:13 joris 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 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 | TIFFErrorExt(0, 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; |