1 /* $Id: term_ascii.c,v 1.27 2014/08/01 19:25:52 schwarze Exp $ */
3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2014 Ingo Schwarze <schwarze@openbsd.org>
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.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
22 #include <sys/types.h>
36 #include "mandoc_aux.h"
42 * Sadly, this doesn't seem to be defined on systems even when they
43 * support it. For the time being, remove it and let those compiling
44 * the software decide for themselves what to use.
47 #if ! defined(__STDC_ISO_10646__)
52 static struct termp *ascii_init(enum termenc, char *);
53 static double ascii_hspan(const struct termp *,
54 const struct roffsu *);
55 static size_t ascii_width(const struct termp *, int);
56 static void ascii_advance(struct termp *, size_t);
57 static void ascii_begin(struct termp *);
58 static void ascii_end(struct termp *);
59 static void ascii_endline(struct termp *);
60 static void ascii_letter(struct termp *, int);
61 static void ascii_setwidth(struct termp *, int, size_t);
64 static void locale_advance(struct termp *, size_t);
65 static void locale_endline(struct termp *);
66 static void locale_letter(struct termp *, int);
67 static size_t locale_width(const struct termp *, int);
72 ascii_init(enum termenc enc, char *outopts)
78 p = mandoc_calloc(1, sizeof(struct termp));
81 p->defrmargin = p->lastrmargin = 78;
83 p->begin = ascii_begin;
85 p->hspan = ascii_hspan;
86 p->type = TERMTYPE_CHAR;
88 p->enc = TERMENC_ASCII;
89 p->advance = ascii_advance;
90 p->endline = ascii_endline;
91 p->letter = ascii_letter;
92 p->setwidth = ascii_setwidth;
93 p->width = ascii_width;
96 if (TERMENC_ASCII != enc) {
97 v = TERMENC_LOCALE == enc ?
98 setlocale(LC_ALL, "") :
99 setlocale(LC_CTYPE, "en_US.UTF-8");
100 if (NULL != v && MB_CUR_MAX > 1) {
102 p->advance = locale_advance;
103 p->endline = locale_endline;
104 p->letter = locale_letter;
105 p->width = locale_width;
115 while (outopts && *outopts)
116 switch (getsubopt(&outopts, UNCONST(toks), &v)) {
118 p->defindent = (size_t)atoi(v);
121 p->defrmargin = (size_t)atoi(v);
125 * Temporary, undocumented mode
126 * to imitate mdoc(7) output style.
135 /* Enforce a lower boundary. */
136 if (p->defrmargin < 58)
143 ascii_alloc(char *outopts)
146 return(ascii_init(TERMENC_ASCII, outopts));
150 utf8_alloc(char *outopts)
153 return(ascii_init(TERMENC_UTF8, outopts));
157 locale_alloc(char *outopts)
160 return(ascii_init(TERMENC_LOCALE, outopts));
164 ascii_setwidth(struct termp *p, int iop, size_t width)
167 p->rmargin = p->defrmargin;
169 p->defrmargin += width;
171 p->defrmargin -= width;
173 p->defrmargin = width ? width : p->lastrmargin;
174 p->lastrmargin = p->rmargin;
175 p->rmargin = p->maxrmargin = p->defrmargin;
179 ascii_width(const struct termp *p, int c)
186 ascii_free(void *arg)
189 term_free((struct termp *)arg);
193 ascii_letter(struct termp *p, int c)
200 ascii_begin(struct termp *p)
203 (*p->headf)(p, p->argf);
207 ascii_end(struct termp *p)
210 (*p->footf)(p, p->argf);
214 ascii_endline(struct termp *p)
221 ascii_advance(struct termp *p, size_t len)
225 for (i = 0; i < len; i++)
230 ascii_hspan(const struct termp *p, const struct roffsu *su)
235 * Approximate based on character width. These are generated
236 * entirely by eyeballing the screen, but appear to be correct.
244 r = su->scale * 10.0;
247 r = (su->scale * 10.0) / 6.0;
250 r = (su->scale * 10.0) / 72.0;
253 r = su->scale / 1000.0;
256 r = su->scale * 2.0 - 1.0;
268 locale_width(const struct termp *p, int c)
272 if (c == ASCII_NBRSP)
281 locale_advance(struct termp *p, size_t len)
285 for (i = 0; i < len; i++)
290 locale_endline(struct termp *p)
297 locale_letter(struct termp *p, int c)