]> git.cameronkatri.com Git - mandoc.git/blob - term_ascii.c
Vastly simplify man(7) block unwinding, similar to mdoc_macro.c 1.171.
[mandoc.git] / term_ascii.c
1 /* $Id: term_ascii.c,v 1.44 2015/03/27 21:33:20 schwarze Exp $ */
2 /*
3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18 #include "config.h"
19
20 #include <sys/types.h>
21
22 #include <assert.h>
23 #if HAVE_WCHAR
24 #include <locale.h>
25 #endif
26 #include <stdint.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <unistd.h>
30 #if HAVE_WCHAR
31 #include <wchar.h>
32 #endif
33
34 #include "mandoc.h"
35 #include "mandoc_aux.h"
36 #include "out.h"
37 #include "term.h"
38 #include "manconf.h"
39 #include "main.h"
40
41 static struct termp *ascii_init(enum termenc, const struct mchars *,
42 const struct manoutput *);
43 static double ascii_hspan(const struct termp *,
44 const struct roffsu *);
45 static size_t ascii_width(const struct termp *, int);
46 static void ascii_advance(struct termp *, size_t);
47 static void ascii_begin(struct termp *);
48 static void ascii_end(struct termp *);
49 static void ascii_endline(struct termp *);
50 static void ascii_letter(struct termp *, int);
51 static void ascii_setwidth(struct termp *, int, size_t);
52
53 #if HAVE_WCHAR
54 static void locale_advance(struct termp *, size_t);
55 static void locale_endline(struct termp *);
56 static void locale_letter(struct termp *, int);
57 static size_t locale_width(const struct termp *, int);
58 #endif
59
60
61 static struct termp *
62 ascii_init(enum termenc enc, const struct mchars *mchars,
63 const struct manoutput *outopts)
64 {
65 char *v;
66 struct termp *p;
67
68 p = mandoc_calloc(1, sizeof(struct termp));
69
70 p->symtab = mchars;
71 p->tabwidth = 5;
72 p->defrmargin = p->lastrmargin = 78;
73 p->fontq = mandoc_reallocarray(NULL,
74 (p->fontsz = 8), sizeof(enum termfont));
75 p->fontq[0] = p->fontl = TERMFONT_NONE;
76
77 p->begin = ascii_begin;
78 p->end = ascii_end;
79 p->hspan = ascii_hspan;
80 p->type = TERMTYPE_CHAR;
81
82 p->enc = TERMENC_ASCII;
83 p->advance = ascii_advance;
84 p->endline = ascii_endline;
85 p->letter = ascii_letter;
86 p->setwidth = ascii_setwidth;
87 p->width = ascii_width;
88
89 #if HAVE_WCHAR
90 if (TERMENC_ASCII != enc) {
91 v = TERMENC_LOCALE == enc ?
92 setlocale(LC_ALL, "") :
93 setlocale(LC_CTYPE, "en_US.UTF-8");
94 if (NULL != v && MB_CUR_MAX > 1) {
95 p->enc = enc;
96 p->advance = locale_advance;
97 p->endline = locale_endline;
98 p->letter = locale_letter;
99 p->width = locale_width;
100 }
101 }
102 #endif
103
104 if (outopts->mdoc) {
105 p->mdocstyle = 1;
106 p->defindent = 5;
107 }
108 if (outopts->indent)
109 p->defindent = outopts->indent;
110 if (outopts->width)
111 p->defrmargin = outopts->width;
112 if (outopts->synopsisonly)
113 p->synopsisonly = 1;
114
115 return(p);
116 }
117
118 void *
119 ascii_alloc(const struct mchars *mchars, const struct manoutput *outopts)
120 {
121
122 return(ascii_init(TERMENC_ASCII, mchars, outopts));
123 }
124
125 void *
126 utf8_alloc(const struct mchars *mchars, const struct manoutput *outopts)
127 {
128
129 return(ascii_init(TERMENC_UTF8, mchars, outopts));
130 }
131
132 void *
133 locale_alloc(const struct mchars *mchars, const struct manoutput *outopts)
134 {
135
136 return(ascii_init(TERMENC_LOCALE, mchars, outopts));
137 }
138
139 static void
140 ascii_setwidth(struct termp *p, int iop, size_t width)
141 {
142
143 p->rmargin = p->defrmargin;
144 if (iop > 0)
145 p->defrmargin += width;
146 else if (iop == 0)
147 p->defrmargin = width ? width : p->lastrmargin;
148 else if (p->defrmargin > width)
149 p->defrmargin -= width;
150 else
151 p->defrmargin = 0;
152 p->lastrmargin = p->rmargin;
153 p->rmargin = p->maxrmargin = p->defrmargin;
154 }
155
156 void
157 ascii_sepline(void *arg)
158 {
159 struct termp *p;
160 size_t i;
161
162 p = (struct termp *)arg;
163 putchar('\n');
164 for (i = 0; i < p->defrmargin; i++)
165 putchar('-');
166 putchar('\n');
167 putchar('\n');
168 }
169
170 static size_t
171 ascii_width(const struct termp *p, int c)
172 {
173
174 return(1);
175 }
176
177 void
178 ascii_free(void *arg)
179 {
180
181 term_free((struct termp *)arg);
182 }
183
184 static void
185 ascii_letter(struct termp *p, int c)
186 {
187
188 putchar(c);
189 }
190
191 static void
192 ascii_begin(struct termp *p)
193 {
194
195 (*p->headf)(p, p->argf);
196 }
197
198 static void
199 ascii_end(struct termp *p)
200 {
201
202 (*p->footf)(p, p->argf);
203 }
204
205 static void
206 ascii_endline(struct termp *p)
207 {
208
209 putchar('\n');
210 }
211
212 static void
213 ascii_advance(struct termp *p, size_t len)
214 {
215 size_t i;
216
217 for (i = 0; i < len; i++)
218 putchar(' ');
219 }
220
221 static double
222 ascii_hspan(const struct termp *p, const struct roffsu *su)
223 {
224 double r;
225
226 /*
227 * Approximate based on character width.
228 * None of these will be actually correct given that an inch on
229 * the screen depends on character size, terminal, etc., etc.
230 */
231 switch (su->unit) {
232 case SCALE_BU:
233 r = su->scale * 10.0 / 240.0;
234 break;
235 case SCALE_CM:
236 r = su->scale * 10.0 / 2.54;
237 break;
238 case SCALE_FS:
239 r = su->scale * 2730.666;
240 break;
241 case SCALE_IN:
242 r = su->scale * 10.0;
243 break;
244 case SCALE_MM:
245 r = su->scale / 100.0;
246 break;
247 case SCALE_PC:
248 r = su->scale * 10.0 / 6.0;
249 break;
250 case SCALE_PT:
251 r = su->scale * 10.0 / 72.0;
252 break;
253 case SCALE_VS:
254 r = su->scale * 2.0 - 1.0;
255 break;
256 case SCALE_EN:
257 /* FALLTHROUGH */
258 case SCALE_EM:
259 r = su->scale;
260 break;
261 default:
262 abort();
263 /* NOTREACHED */
264 }
265
266 return(r);
267 }
268
269 const char *
270 ascii_uc2str(int uc)
271 {
272 static const char nbrsp[2] = { ASCII_NBRSP, '\0' };
273 static const char *tab[] = {
274 "<NUL>","<SOH>","<STX>","<ETX>","<EOT>","<ENQ>","<ACK>","<BEL>",
275 "<BS>", "\t", "<LF>", "<VT>", "<FF>", "<CR>", "<SO>", "<SI>",
276 "<DLE>","<DC1>","<DC2>","<DC3>","<DC4>","<NAK>","<SYN>","<ETB>",
277 "<CAN>","<EM>", "<SUB>","<ESC>","<FS>", "<GS>", "<RS>", "<US>",
278 " ", "!", "\"", "#", "$", "%", "&", "'",
279 "(", ")", "*", "+", ",", "-", ".", "/",
280 "0", "1", "2", "3", "4", "5", "6", "7",
281 "8", "9", ":", ";", "<", "=", ">", "?",
282 "@", "A", "B", "C", "D", "E", "F", "G",
283 "H", "I", "J", "K", "L", "M", "N", "O",
284 "P", "Q", "R", "S", "T", "U", "V", "W",
285 "X", "Y", "Z", "[", "\\", "]", "^", "_",
286 "`", "a", "b", "c", "d", "e", "f", "g",
287 "h", "i", "j", "k", "l", "m", "n", "o",
288 "p", "q", "r", "s", "t", "u", "v", "w",
289 "x", "y", "z", "{", "|", "}", "~", "<DEL>",
290 "<80>", "<81>", "<82>", "<83>", "<84>", "<85>", "<86>", "<87>",
291 "<88>", "<89>", "<8A>", "<8B>", "<8C>", "<8D>", "<8E>", "<8F>",
292 "<90>", "<91>", "<92>", "<93>", "<94>", "<95>", "<96>", "<97>",
293 "<99>", "<99>", "<9A>", "<9B>", "<9C>", "<9D>", "<9E>", "<9F>",
294 nbrsp, "!", "/\bc", "GBP", "o\bx", "=\bY", "|", "<sec>",
295 "\"", "(C)", "_\ba", "<<", "~", "", "(R)", "-",
296 "<deg>","+-", "2", "3", "'", ",\bu", "<par>",".",
297 ",", "1", "_\bo", ">>", "1/4", "1/2", "3/4", "?",
298 "`\bA", "'\bA", "^\bA", "~\bA", "\"\bA","o\bA", "AE", ",\bC",
299 "`\bE", "'\bE", "^\bE", "\"\bE","`\bI", "'\bI", "^\bI", "\"\bI",
300 "-\bD", "~\bN", "`\bO", "'\bO", "^\bO", "~\bO", "\"\bO","x",
301 "/\bO", "`\bU", "'\bU", "^\bU", "\"\bU","'\bY", "Th", "ss",
302 "`\ba", "'\ba", "^\ba", "~\ba", "\"\ba","o\ba", "ae", ",\bc",
303 "`\be", "'\be", "^\be", "\"\be","`\bi", "'\bi", "^\bi", "\"\bi",
304 "d", "~\bn", "`\bo", "'\bo", "^\bo", "~\bo", "\"\bo","-:-",
305 "/\bo", "`\bu", "'\bu", "^\bu", "\"\bu","'\by", "th", "\"\by",
306 "A", "a", "A", "a", "A", "a", "'\bC", "'\bc",
307 "^\bC", "^\bc", "C", "c", "C", "c", "D", "d",
308 "/\bD", "/\bd", "E", "e", "E", "e", "E", "e",
309 "E", "e", "E", "e", "^\bG", "^\bg", "G", "g",
310 "G", "g", ",\bG", ",\bg", "^\bH", "^\bh", "/\bH", "/\bh",
311 "~\bI", "~\bi", "I", "i", "I", "i", "I", "i",
312 "I", "i", "IJ", "ij", "^\bJ", "^\bj", ",\bK", ",\bk",
313 "q", "'\bL", "'\bl", ",\bL", ",\bl", "L", "l", "L",
314 "l", "/\bL", "/\bl", "'\bN", "'\bn", ",\bN", ",\bn", "N",
315 "n", "'n", "Ng", "ng", "O", "o", "O", "o",
316 "O", "o", "OE", "oe", "'\bR", "'\br", ",\bR", ",\br",
317 "R", "r", "'\bS", "'\bs", "^\bS", "^\bs", ",\bS", ",\bs",
318 "S", "s", ",\bT", ",\bt", "T", "t", "/\bT", "/\bt",
319 "~\bU", "~\bu", "U", "u", "U", "u", "U", "u",
320 "U", "u", "U", "u", "^\bW", "^\bw", "^\bY", "^\by",
321 "\"\bY","'\bZ", "'\bz", "Z", "z", "Z", "z", "s",
322 "b", "B", "B", "b", "6", "6", "O", "C",
323 "c", "D", "D", "D", "d", "d", "3", "@",
324 "E", "F", ",\bf", "G", "G", "hv", "I", "/\bI",
325 "K", "k", "/\bl", "l", "W", "N", "n", "~\bO",
326 "O", "o", "OI", "oi", "P", "p", "YR", "2",
327 "2", "SH", "sh", "t", "T", "t", "T", "U",
328 "u", "Y", "V", "Y", "y", "/\bZ", "/\bz", "ZH",
329 "ZH", "zh", "zh", "/\b2", "5", "5", "ts", "w",
330 "|", "||", "|=", "!", "DZ", "Dz", "dz", "LJ",
331 "Lj", "lj", "NJ", "Nj", "nj", "A", "a", "I",
332 "i", "O", "o", "U", "u", "U", "u", "U",
333 "u", "U", "u", "U", "u", "@", "A", "a",
334 "A", "a", "AE", "ae", "/\bG", "/\bg", "G", "g",
335 "K", "k", "O", "o", "O", "o", "ZH", "zh",
336 "j", "DZ", "Dz", "dz", "'\bG", "'\bg", "HV", "W",
337 "`\bN", "`\bn", "A", "a", "'\bAE","'\bae","O", "o"};
338
339 assert(uc >= 0);
340 if ((size_t)uc < sizeof(tab)/sizeof(tab[0]))
341 return(tab[uc]);
342 return(mchars_uc2str(uc));
343 }
344
345 #if HAVE_WCHAR
346 static size_t
347 locale_width(const struct termp *p, int c)
348 {
349 int rc;
350
351 if (c == ASCII_NBRSP)
352 c = ' ';
353 rc = wcwidth(c);
354 if (rc < 0)
355 rc = 0;
356 return(rc);
357 }
358
359 static void
360 locale_advance(struct termp *p, size_t len)
361 {
362 size_t i;
363
364 for (i = 0; i < len; i++)
365 putwchar(L' ');
366 }
367
368 static void
369 locale_endline(struct termp *p)
370 {
371
372 putwchar(L'\n');
373 }
374
375 static void
376 locale_letter(struct termp *p, int c)
377 {
378
379 putwchar(c);
380 }
381 #endif