1 /* $NetBSD: guess.cpp,v 1.1.1.1 2016/01/13 18:41:49 christos Exp $ */
2
3 // -*- C++ -*-
4 /* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
5 Written by James Clark (jjc@jclark.com)
6
7 This file is part of groff.
8
9 groff is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 2, or (at your option) any later
12 version.
13
14 groff is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 for more details.
18
19 You should have received a copy of the GNU General Public License along
20 with groff; see the file COPYING. If not, write to the Free Software
21 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
22
23 #include "guess.h"
24
guess(const char * s,const font_params & param,char_metric * metric)25 void guess(const char *s, const font_params ¶m, char_metric *metric)
26 {
27 int &height = metric->height;
28 int &depth = metric->depth;
29
30 metric->ic = 0;
31 metric->left_ic = 0;
32 metric->sk = 0;
33 height = 0;
34 depth = 0;
35 if (s[0] == '\0' || (s[1] != '\0' && s[2] != '\0'))
36 goto do_default;
37 #define HASH(c1, c2) (((unsigned char)(c1) << 8) | (unsigned char)(c2))
38 switch (HASH(s[0], s[1])) {
39 default:
40 do_default:
41 if (metric->type & 01)
42 depth = param.desc_depth;
43 if (metric->type & 02)
44 height = param.asc_height;
45 else
46 height = param.x_height;
47 break;
48 case HASH('\\', '|'):
49 case HASH('\\', '^'):
50 case HASH('\\', '&'):
51 // these have zero height and depth
52 break;
53 case HASH('f', 0):
54 height = param.asc_height;
55 if (param.italic)
56 depth = param.desc_depth;
57 break;
58 case HASH('a', 0):
59 case HASH('c', 0):
60 case HASH('e', 0):
61 case HASH('m', 0):
62 case HASH('n', 0):
63 case HASH('o', 0):
64 case HASH('r', 0):
65 case HASH('s', 0):
66 case HASH('u', 0):
67 case HASH('v', 0):
68 case HASH('w', 0):
69 case HASH('x', 0):
70 case HASH('z', 0):
71 height = param.x_height;
72 break;
73 case HASH('i', 0):
74 height = param.x_height;
75 break;
76 case HASH('b', 0):
77 case HASH('d', 0):
78 case HASH('h', 0):
79 case HASH('k', 0):
80 case HASH('l', 0):
81 case HASH('F', 'i'):
82 case HASH('F', 'l'):
83 case HASH('f', 'f'):
84 case HASH('f', 'i'):
85 case HASH('f', 'l'):
86 height = param.asc_height;
87 break;
88 case HASH('t', 0):
89 height = param.asc_height;
90 break;
91 case HASH('g', 0):
92 case HASH('p', 0):
93 case HASH('q', 0):
94 case HASH('y', 0):
95 height = param.x_height;
96 depth = param.desc_depth;
97 break;
98 case HASH('j', 0):
99 height = param.x_height;
100 depth = param.desc_depth;
101 break;
102 case HASH('A', 0):
103 case HASH('B', 0):
104 case HASH('C', 0):
105 case HASH('D', 0):
106 case HASH('E', 0):
107 case HASH('F', 0):
108 case HASH('G', 0):
109 case HASH('H', 0):
110 case HASH('I', 0):
111 case HASH('J', 0):
112 case HASH('K', 0):
113 case HASH('L', 0):
114 case HASH('M', 0):
115 case HASH('N', 0):
116 case HASH('O', 0):
117 case HASH('P', 0):
118 case HASH('Q', 0):
119 case HASH('R', 0):
120 case HASH('S', 0):
121 case HASH('T', 0):
122 case HASH('U', 0):
123 case HASH('V', 0):
124 case HASH('W', 0):
125 case HASH('X', 0):
126 case HASH('Y', 0):
127 case HASH('Z', 0):
128 height = param.cap_height;
129 break;
130 case HASH('*', 'A'):
131 case HASH('*', 'B'):
132 case HASH('*', 'C'):
133 case HASH('*', 'D'):
134 case HASH('*', 'E'):
135 case HASH('*', 'F'):
136 case HASH('*', 'G'):
137 case HASH('*', 'H'):
138 case HASH('*', 'I'):
139 case HASH('*', 'K'):
140 case HASH('*', 'L'):
141 case HASH('*', 'M'):
142 case HASH('*', 'N'):
143 case HASH('*', 'O'):
144 case HASH('*', 'P'):
145 case HASH('*', 'Q'):
146 case HASH('*', 'R'):
147 case HASH('*', 'S'):
148 case HASH('*', 'T'):
149 case HASH('*', 'U'):
150 case HASH('*', 'W'):
151 case HASH('*', 'X'):
152 case HASH('*', 'Y'):
153 case HASH('*', 'Z'):
154 height = param.cap_height;
155 break;
156 case HASH('0', 0):
157 case HASH('1', 0):
158 case HASH('2', 0):
159 case HASH('3', 0):
160 case HASH('4', 0):
161 case HASH('5', 0):
162 case HASH('6', 0):
163 case HASH('7', 0):
164 case HASH('8', 0):
165 case HASH('9', 0):
166 case HASH('1', '2'):
167 case HASH('1', '4'):
168 case HASH('3', '4'):
169 height = param.fig_height;
170 break;
171 case HASH('(', 0):
172 case HASH(')', 0):
173 case HASH('[', 0):
174 case HASH(']', 0):
175 case HASH('{', 0):
176 case HASH('}', 0):
177 height = param.body_height;
178 depth = param.body_depth;
179 break;
180 case HASH('i', 's'):
181 height = (param.em*3)/4;
182 depth = param.em/4;
183 break;
184 case HASH('*', 'a'):
185 case HASH('*', 'e'):
186 case HASH('*', 'i'):
187 case HASH('*', 'k'):
188 case HASH('*', 'n'):
189 case HASH('*', 'o'):
190 case HASH('*', 'p'):
191 case HASH('*', 's'):
192 case HASH('*', 't'):
193 case HASH('*', 'u'):
194 case HASH('*', 'w'):
195 height = param.x_height;
196 break;
197 case HASH('*', 'd'):
198 case HASH('*', 'l'):
199 height = param.asc_height;
200 break;
201 case HASH('*', 'g'):
202 case HASH('*', 'h'):
203 case HASH('*', 'm'):
204 case HASH('*', 'r'):
205 case HASH('*', 'x'):
206 case HASH('*', 'y'):
207 height = param.x_height;
208 depth = param.desc_depth;
209 break;
210 case HASH('*', 'b'):
211 case HASH('*', 'c'):
212 case HASH('*', 'f'):
213 case HASH('*', 'q'):
214 case HASH('*', 'z'):
215 height = param.asc_height;
216 depth = param.desc_depth;
217 break;
218 case HASH('t', 's'):
219 height = param.x_height;
220 depth = param.desc_depth;
221 break;
222 case HASH('!', 0):
223 case HASH('?', 0):
224 case HASH('"', 0):
225 case HASH('#', 0):
226 case HASH('$', 0):
227 case HASH('%', 0):
228 case HASH('&', 0):
229 case HASH('*', 0):
230 case HASH('+', 0):
231 height = param.asc_height;
232 break;
233 case HASH('`', 0):
234 case HASH('\'', 0):
235 height = param.asc_height;
236 break;
237 case HASH('~', 0):
238 case HASH('^', 0):
239 case HASH('a', 'a'):
240 case HASH('g', 'a'):
241 height = param.asc_height;
242 break;
243 case HASH('r', 'u'):
244 case HASH('.', 0):
245 break;
246 case HASH(',', 0):
247 depth = param.comma_depth;
248 break;
249 case HASH('m', 'i'):
250 case HASH('-', 0):
251 case HASH('h', 'y'):
252 case HASH('e', 'm'):
253 height = param.x_height;
254 break;
255 case HASH(':', 0):
256 height = param.x_height;
257 break;
258 case HASH(';', 0):
259 height = param.x_height;
260 depth = param.comma_depth;
261 break;
262 case HASH('=', 0):
263 case HASH('e', 'q'):
264 height = param.x_height;
265 break;
266 case HASH('<', 0):
267 case HASH('>', 0):
268 case HASH('>', '='):
269 case HASH('<', '='):
270 case HASH('@', 0):
271 case HASH('/', 0):
272 case HASH('|', 0):
273 case HASH('\\', 0):
274 height = param.asc_height;
275 break;
276 case HASH('_', 0):
277 case HASH('u', 'l'):
278 case HASH('\\', '_'):
279 depth = param.em/4;
280 break;
281 case HASH('r', 'n'):
282 height = (param.em*3)/4;
283 break;
284 case HASH('s', 'r'):
285 height = (param.em*3)/4;
286 depth = param.em/4;
287 break;
288 case HASH('b', 'u'):
289 case HASH('s', 'q'):
290 case HASH('d', 'e'):
291 case HASH('d', 'g'):
292 case HASH('f', 'm'):
293 case HASH('c', 't'):
294 case HASH('r', 'g'):
295 case HASH('c', 'o'):
296 case HASH('p', 'l'):
297 case HASH('*', '*'):
298 case HASH('s', 'c'):
299 case HASH('s', 'l'):
300 case HASH('=', '='):
301 case HASH('~', '='):
302 case HASH('a', 'p'):
303 case HASH('!', '='):
304 case HASH('-', '>'):
305 case HASH('<', '-'):
306 case HASH('u', 'a'):
307 case HASH('d', 'a'):
308 case HASH('m', 'u'):
309 case HASH('d', 'i'):
310 case HASH('+', '-'):
311 case HASH('c', 'u'):
312 case HASH('c', 'a'):
313 case HASH('s', 'b'):
314 case HASH('s', 'p'):
315 case HASH('i', 'b'):
316 case HASH('i', 'p'):
317 case HASH('i', 'f'):
318 case HASH('p', 'd'):
319 case HASH('g', 'r'):
320 case HASH('n', 'o'):
321 case HASH('p', 't'):
322 case HASH('e', 's'):
323 case HASH('m', 'o'):
324 case HASH('b', 'r'):
325 case HASH('d', 'd'):
326 case HASH('r', 'h'):
327 case HASH('l', 'h'):
328 case HASH('o', 'r'):
329 case HASH('c', 'i'):
330 height = param.asc_height;
331 break;
332 case HASH('l', 't'):
333 case HASH('l', 'b'):
334 case HASH('r', 't'):
335 case HASH('r', 'b'):
336 case HASH('l', 'k'):
337 case HASH('r', 'k'):
338 case HASH('b', 'v'):
339 case HASH('l', 'f'):
340 case HASH('r', 'f'):
341 case HASH('l', 'c'):
342 case HASH('r', 'c'):
343 height = (param.em*3)/4;
344 depth = param.em/4;
345 break;
346 #if 0
347 case HASH('%', '0'):
348 case HASH('-', '+'):
349 case HASH('-', 'D'):
350 case HASH('-', 'd'):
351 case HASH('-', 'd'):
352 case HASH('-', 'h'):
353 case HASH('.', 'i'):
354 case HASH('.', 'j'):
355 case HASH('/', 'L'):
356 case HASH('/', 'O'):
357 case HASH('/', 'l'):
358 case HASH('/', 'o'):
359 case HASH('=', '~'):
360 case HASH('A', 'E'):
361 case HASH('A', 'h'):
362 case HASH('A', 'N'):
363 case HASH('C', 's'):
364 case HASH('D', 'o'):
365 case HASH('F', 'c'):
366 case HASH('F', 'o'):
367 case HASH('I', 'J'):
368 case HASH('I', 'm'):
369 case HASH('O', 'E'):
370 case HASH('O', 'f'):
371 case HASH('O', 'K'):
372 case HASH('O', 'm'):
373 case HASH('O', 'R'):
374 case HASH('P', 'o'):
375 case HASH('R', 'e'):
376 case HASH('S', '1'):
377 case HASH('S', '2'):
378 case HASH('S', '3'):
379 case HASH('T', 'P'):
380 case HASH('T', 'p'):
381 case HASH('Y', 'e'):
382 case HASH('\\', '-'):
383 case HASH('a', '"'):
384 case HASH('a', '-'):
385 case HASH('a', '.'):
386 case HASH('a', '^'):
387 case HASH('a', 'b'):
388 case HASH('a', 'c'):
389 case HASH('a', 'd'):
390 case HASH('a', 'e'):
391 case HASH('a', 'h'):
392 case HASH('a', 'o'):
393 case HASH('a', 't'):
394 case HASH('a', '~'):
395 case HASH('b', 'a'):
396 case HASH('b', 'b'):
397 case HASH('b', 's'):
398 case HASH('c', '*'):
399 case HASH('c', '+'):
400 case HASH('f', '/'):
401 case HASH('f', 'a'):
402 case HASH('f', 'c'):
403 case HASH('f', 'o'):
404 case HASH('h', 'a'):
405 case HASH('h', 'o'):
406 case HASH('i', 'j'):
407 case HASH('l', 'A'):
408 case HASH('l', 'B'):
409 case HASH('l', 'C'):
410 case HASH('m', 'd'):
411 case HASH('n', 'c'):
412 case HASH('n', 'e'):
413 case HASH('n', 'm'):
414 case HASH('o', 'A'):
415 case HASH('o', 'a'):
416 case HASH('o', 'e'):
417 case HASH('o', 'q'):
418 case HASH('p', 'l'):
419 case HASH('p', 'p'):
420 case HASH('p', 's'):
421 case HASH('r', '!'):
422 case HASH('r', '?'):
423 case HASH('r', 'A'):
424 case HASH('r', 'B'):
425 case HASH('r', 'C'):
426 case HASH('r', 's'):
427 case HASH('s', 'h'):
428 case HASH('s', 's'):
429 case HASH('t', 'e'):
430 case HASH('t', 'f'):
431 case HASH('t', 'i'):
432 case HASH('t', 'm'):
433 case HASH('~', '~'):
434 case HASH('v', 'S'):
435 case HASH('v', 'Z'):
436 case HASH('v', 's'):
437 case HASH('v', 'z'):
438 case HASH('^', 'A'):
439 case HASH('^', 'E'):
440 case HASH('^', 'I'):
441 case HASH('^', 'O'):
442 case HASH('^', 'U'):
443 case HASH('^', 'a'):
444 case HASH('^', 'e'):
445 case HASH('^', 'i'):
446 case HASH('^', 'o'):
447 case HASH('^', 'u'):
448 case HASH('`', 'A'):
449 case HASH('`', 'E'):
450 case HASH('`', 'I'):
451 case HASH('`', 'O'):
452 case HASH('`', 'U'):
453 case HASH('`', 'a'):
454 case HASH('`', 'e'):
455 case HASH('`', 'i'):
456 case HASH('`', 'o'):
457 case HASH('`', 'u'):
458 case HASH('~', 'A'):
459 case HASH('~', 'N'):
460 case HASH('~', 'O'):
461 case HASH('~', 'a'):
462 case HASH('~', 'n'):
463 case HASH('~', 'o'):
464 case HASH('\'', 'A'):
465 case HASH('\'', 'C'):
466 case HASH('\'', 'E'):
467 case HASH('\'', 'I'):
468 case HASH('\'', 'O'):
469 case HASH('\'', 'U'):
470 case HASH('\'', 'a'):
471 case HASH('\'', 'c'):
472 case HASH('\'', 'e'):
473 case HASH('\'', 'i'):
474 case HASH('\'', 'o'):
475 case HASH('\'', 'u')
476 case HASH(':', 'A'):
477 case HASH(':', 'E'):
478 case HASH(':', 'I'):
479 case HASH(':', 'O'):
480 case HASH(':', 'U'):
481 case HASH(':', 'Y'):
482 case HASH(':', 'a'):
483 case HASH(':', 'e'):
484 case HASH(':', 'i'):
485 case HASH(':', 'o'):
486 case HASH(':', 'u'):
487 case HASH(':', 'y'):
488 case HASH(',', 'C'):
489 case HASH(',', 'c'):
490 #endif
491 }
492 }
493