Annotation of mandoc/term_ascii.c, Revision 1.33
1.33 ! schwarze 1: /* $Id: term_ascii.c,v 1.32 2014/08/17 22:10:29 schwarze Exp $ */
1.1 kristaps 2: /*
1.18 schwarze 3: * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.23 schwarze 4: * Copyright (c) 2014 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 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 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.
17: */
18: #include "config.h"
19:
20: #include <sys/types.h>
21:
1.31 schwarze 22: #if HAVE_WCHAR
1.28 schwarze 23: #include <locale.h>
1.15 kristaps 24: #endif
1.1 kristaps 25: #include <stdint.h>
26: #include <stdio.h>
27: #include <stdlib.h>
1.2 kristaps 28: #include <unistd.h>
1.31 schwarze 29: #if HAVE_WCHAR
1.28 schwarze 30: #include <wchar.h>
1.15 kristaps 31: #endif
1.1 kristaps 32:
1.11 kristaps 33: #include "mandoc.h"
1.22 schwarze 34: #include "mandoc_aux.h"
1.1 kristaps 35: #include "out.h"
36: #include "term.h"
37: #include "main.h"
38:
1.14 kristaps 39: static struct termp *ascii_init(enum termenc, char *);
1.8 kristaps 40: static double ascii_hspan(const struct termp *,
1.7 kristaps 41: const struct roffsu *);
1.13 kristaps 42: static size_t ascii_width(const struct termp *, int);
1.7 kristaps 43: static void ascii_advance(struct termp *, size_t);
44: static void ascii_begin(struct termp *);
45: static void ascii_end(struct termp *);
1.1 kristaps 46: static void ascii_endline(struct termp *);
1.13 kristaps 47: static void ascii_letter(struct termp *, int);
1.24 schwarze 48: static void ascii_setwidth(struct termp *, int, size_t);
1.1 kristaps 49:
1.31 schwarze 50: #if HAVE_WCHAR
1.15 kristaps 51: static void locale_advance(struct termp *, size_t);
52: static void locale_endline(struct termp *);
53: static void locale_letter(struct termp *, int);
54: static size_t locale_width(const struct termp *, int);
55: #endif
56:
1.25 schwarze 57:
1.14 kristaps 58: static struct termp *
59: ascii_init(enum termenc enc, char *outopts)
1.1 kristaps 60: {
1.33 ! schwarze 61: const char *toks[5];
1.1 kristaps 62: char *v;
1.14 kristaps 63: struct termp *p;
1.1 kristaps 64:
1.14 kristaps 65: p = mandoc_calloc(1, sizeof(struct termp));
1.1 kristaps 66:
1.5 kristaps 67: p->tabwidth = 5;
1.23 schwarze 68: p->defrmargin = p->lastrmargin = 78;
1.5 kristaps 69:
1.1 kristaps 70: p->begin = ascii_begin;
71: p->end = ascii_end;
1.15 kristaps 72: p->hspan = ascii_hspan;
73: p->type = TERMTYPE_CHAR;
74:
75: p->enc = TERMENC_ASCII;
76: p->advance = ascii_advance;
1.1 kristaps 77: p->endline = ascii_endline;
1.7 kristaps 78: p->letter = ascii_letter;
1.23 schwarze 79: p->setwidth = ascii_setwidth;
1.5 kristaps 80: p->width = ascii_width;
1.1 kristaps 81:
1.31 schwarze 82: #if HAVE_WCHAR
1.17 kristaps 83: if (TERMENC_ASCII != enc) {
84: v = TERMENC_LOCALE == enc ?
1.25 schwarze 85: setlocale(LC_ALL, "") :
86: setlocale(LC_CTYPE, "en_US.UTF-8");
1.17 kristaps 87: if (NULL != v && MB_CUR_MAX > 1) {
1.15 kristaps 88: p->enc = enc;
89: p->advance = locale_advance;
90: p->endline = locale_endline;
91: p->letter = locale_letter;
92: p->width = locale_width;
93: }
1.17 kristaps 94: }
1.15 kristaps 95: #endif
96:
1.19 schwarze 97: toks[0] = "indent";
98: toks[1] = "width";
1.20 schwarze 99: toks[2] = "mdoc";
1.33 ! schwarze 100: toks[3] = "synopsis";
! 101: toks[4] = NULL;
1.1 kristaps 102:
103: while (outopts && *outopts)
104: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.25 schwarze 105: case 0:
1.19 schwarze 106: p->defindent = (size_t)atoi(v);
107: break;
1.25 schwarze 108: case 1:
1.1 kristaps 109: p->defrmargin = (size_t)atoi(v);
1.20 schwarze 110: break;
1.25 schwarze 111: case 2:
1.20 schwarze 112: /*
113: * Temporary, undocumented mode
114: * to imitate mdoc(7) output style.
115: */
116: p->mdocstyle = 1;
117: p->defindent = 5;
1.33 ! schwarze 118: break;
! 119: case 3:
! 120: p->synopsisonly = 1;
1.1 kristaps 121: break;
122: default:
123: break;
124: }
125:
126: /* Enforce a lower boundary. */
127: if (p->defrmargin < 58)
128: p->defrmargin = 58;
129:
130: return(p);
1.5 kristaps 131: }
132:
1.14 kristaps 133: void *
134: ascii_alloc(char *outopts)
135: {
136:
137: return(ascii_init(TERMENC_ASCII, outopts));
138: }
1.17 kristaps 139:
140: void *
141: utf8_alloc(char *outopts)
142: {
143:
144: return(ascii_init(TERMENC_UTF8, outopts));
145: }
146:
1.14 kristaps 147: void *
148: locale_alloc(char *outopts)
149: {
150:
151: return(ascii_init(TERMENC_LOCALE, outopts));
1.23 schwarze 152: }
153:
154: static void
1.24 schwarze 155: ascii_setwidth(struct termp *p, int iop, size_t width)
1.23 schwarze 156: {
157:
1.24 schwarze 158: p->rmargin = p->defrmargin;
159: if (0 < iop)
160: p->defrmargin += width;
161: else if (0 > iop)
162: p->defrmargin -= width;
163: else
164: p->defrmargin = width ? width : p->lastrmargin;
165: p->lastrmargin = p->rmargin;
166: p->rmargin = p->maxrmargin = p->defrmargin;
1.14 kristaps 167: }
1.5 kristaps 168:
169: static size_t
1.13 kristaps 170: ascii_width(const struct termp *p, int c)
1.5 kristaps 171: {
172:
173: return(1);
1.1 kristaps 174: }
175:
176: void
177: ascii_free(void *arg)
178: {
179:
180: term_free((struct termp *)arg);
181: }
182:
183: static void
1.13 kristaps 184: ascii_letter(struct termp *p, int c)
1.1 kristaps 185: {
1.25 schwarze 186:
1.1 kristaps 187: putchar(c);
188: }
189:
190: static void
191: ascii_begin(struct termp *p)
192: {
193:
194: (*p->headf)(p, p->argf);
195: }
196:
197: static void
198: ascii_end(struct termp *p)
199: {
200:
201: (*p->footf)(p, p->argf);
202: }
203:
204: static void
205: ascii_endline(struct termp *p)
206: {
207:
208: putchar('\n');
209: }
210:
211: static void
212: ascii_advance(struct termp *p, size_t len)
213: {
1.25 schwarze 214: size_t i;
1.1 kristaps 215:
216: for (i = 0; i < len; i++)
217: putchar(' ');
218: }
1.7 kristaps 219:
1.8 kristaps 220: static double
1.7 kristaps 221: ascii_hspan(const struct termp *p, const struct roffsu *su)
222: {
223: double r;
224:
225: /*
1.29 kristaps 226: * Approximate based on character width.
227: * None of these will be actually correct given that an inch on
228: * the screen depends on character size, terminal, etc., etc.
1.7 kristaps 229: */
230: switch (su->unit) {
1.29 kristaps 231: case SCALE_BU:
232: r = su->scale * 10.0 / 240.0;
233: break;
1.25 schwarze 234: case SCALE_CM:
1.29 kristaps 235: r = su->scale * 10.0 / 2.54;
236: break;
237: case SCALE_FS:
238: r = su->scale * 2730.666;
1.7 kristaps 239: break;
1.25 schwarze 240: case SCALE_IN:
1.27 schwarze 241: r = su->scale * 10.0;
1.7 kristaps 242: break;
1.29 kristaps 243: case SCALE_MM:
244: r = su->scale / 100.0;
245: break;
1.25 schwarze 246: case SCALE_PC:
1.29 kristaps 247: r = su->scale * 10.0 / 6.0;
1.7 kristaps 248: break;
1.25 schwarze 249: case SCALE_PT:
1.29 kristaps 250: r = su->scale * 10.0 / 72.0;
1.7 kristaps 251: break;
1.25 schwarze 252: case SCALE_VS:
1.27 schwarze 253: r = su->scale * 2.0 - 1.0;
1.7 kristaps 254: break;
1.29 kristaps 255: case SCALE_EN:
1.30 schwarze 256: /* FALLTHROUGH */
1.29 kristaps 257: case SCALE_EM:
1.7 kristaps 258: r = su->scale;
1.29 kristaps 259: break;
1.32 schwarze 260: default:
1.29 kristaps 261: abort();
1.30 schwarze 262: /* NOTREACHED */
1.7 kristaps 263: }
264:
1.8 kristaps 265: return(r);
1.7 kristaps 266: }
267:
1.31 schwarze 268: #if HAVE_WCHAR
1.15 kristaps 269: static size_t
270: locale_width(const struct termp *p, int c)
271: {
272: int rc;
273:
1.26 schwarze 274: if (c == ASCII_NBRSP)
275: c = ' ';
276: rc = wcwidth(c);
277: if (rc < 0)
278: rc = 0;
279: return(rc);
1.15 kristaps 280: }
281:
282: static void
283: locale_advance(struct termp *p, size_t len)
284: {
1.25 schwarze 285: size_t i;
1.15 kristaps 286:
287: for (i = 0; i < len; i++)
288: putwchar(L' ');
289: }
290:
291: static void
292: locale_endline(struct termp *p)
293: {
294:
295: putwchar(L'\n');
296: }
297:
298: static void
299: locale_letter(struct termp *p, int c)
300: {
1.25 schwarze 301:
1.15 kristaps 302: putwchar(c);
303: }
304: #endif
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