Annotation of mandoc/term_ascii.c, Revision 1.31
1.31 ! schwarze 1: /* $Id: term_ascii.c,v 1.30 2014/08/14 22:33:10 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: {
1.20 schwarze 61: const char *toks[4];
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";
100: toks[3] = NULL;
1.1 kristaps 101:
102: while (outopts && *outopts)
103: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.25 schwarze 104: case 0:
1.19 schwarze 105: p->defindent = (size_t)atoi(v);
106: break;
1.25 schwarze 107: case 1:
1.1 kristaps 108: p->defrmargin = (size_t)atoi(v);
1.20 schwarze 109: break;
1.25 schwarze 110: case 2:
1.20 schwarze 111: /*
112: * Temporary, undocumented mode
113: * to imitate mdoc(7) output style.
114: */
115: p->mdocstyle = 1;
116: p->defindent = 5;
1.1 kristaps 117: break;
118: default:
119: break;
120: }
121:
122: /* Enforce a lower boundary. */
123: if (p->defrmargin < 58)
124: p->defrmargin = 58;
125:
126: return(p);
1.5 kristaps 127: }
128:
1.14 kristaps 129: void *
130: ascii_alloc(char *outopts)
131: {
132:
133: return(ascii_init(TERMENC_ASCII, outopts));
134: }
1.17 kristaps 135:
136: void *
137: utf8_alloc(char *outopts)
138: {
139:
140: return(ascii_init(TERMENC_UTF8, outopts));
141: }
142:
1.14 kristaps 143: void *
144: locale_alloc(char *outopts)
145: {
146:
147: return(ascii_init(TERMENC_LOCALE, outopts));
1.23 schwarze 148: }
149:
150: static void
1.24 schwarze 151: ascii_setwidth(struct termp *p, int iop, size_t width)
1.23 schwarze 152: {
153:
1.24 schwarze 154: p->rmargin = p->defrmargin;
155: if (0 < iop)
156: p->defrmargin += width;
157: else if (0 > iop)
158: p->defrmargin -= width;
159: else
160: p->defrmargin = width ? width : p->lastrmargin;
161: p->lastrmargin = p->rmargin;
162: p->rmargin = p->maxrmargin = p->defrmargin;
1.14 kristaps 163: }
1.5 kristaps 164:
165: static size_t
1.13 kristaps 166: ascii_width(const struct termp *p, int c)
1.5 kristaps 167: {
168:
169: return(1);
1.1 kristaps 170: }
171:
172: void
173: ascii_free(void *arg)
174: {
175:
176: term_free((struct termp *)arg);
177: }
178:
179: static void
1.13 kristaps 180: ascii_letter(struct termp *p, int c)
1.1 kristaps 181: {
1.25 schwarze 182:
1.1 kristaps 183: putchar(c);
184: }
185:
186: static void
187: ascii_begin(struct termp *p)
188: {
189:
190: (*p->headf)(p, p->argf);
191: }
192:
193: static void
194: ascii_end(struct termp *p)
195: {
196:
197: (*p->footf)(p, p->argf);
198: }
199:
200: static void
201: ascii_endline(struct termp *p)
202: {
203:
204: putchar('\n');
205: }
206:
207: static void
208: ascii_advance(struct termp *p, size_t len)
209: {
1.25 schwarze 210: size_t i;
1.1 kristaps 211:
212: for (i = 0; i < len; i++)
213: putchar(' ');
214: }
1.7 kristaps 215:
1.8 kristaps 216: static double
1.7 kristaps 217: ascii_hspan(const struct termp *p, const struct roffsu *su)
218: {
219: double r;
220:
221: /*
1.29 kristaps 222: * Approximate based on character width.
223: * None of these will be actually correct given that an inch on
224: * the screen depends on character size, terminal, etc., etc.
1.7 kristaps 225: */
226: switch (su->unit) {
1.29 kristaps 227: case SCALE_BU:
228: r = su->scale * 10.0 / 240.0;
229: break;
1.25 schwarze 230: case SCALE_CM:
1.29 kristaps 231: r = su->scale * 10.0 / 2.54;
232: break;
233: case SCALE_FS:
234: r = su->scale * 2730.666;
1.7 kristaps 235: break;
1.25 schwarze 236: case SCALE_IN:
1.27 schwarze 237: r = su->scale * 10.0;
1.7 kristaps 238: break;
1.29 kristaps 239: case SCALE_MM:
240: r = su->scale / 100.0;
241: break;
1.25 schwarze 242: case SCALE_PC:
1.29 kristaps 243: r = su->scale * 10.0 / 6.0;
1.7 kristaps 244: break;
1.25 schwarze 245: case SCALE_PT:
1.29 kristaps 246: r = su->scale * 10.0 / 72.0;
1.7 kristaps 247: break;
1.25 schwarze 248: case SCALE_VS:
1.27 schwarze 249: r = su->scale * 2.0 - 1.0;
1.7 kristaps 250: break;
1.29 kristaps 251: case SCALE_EN:
1.30 schwarze 252: /* FALLTHROUGH */
1.29 kristaps 253: case SCALE_EM:
1.7 kristaps 254: r = su->scale;
1.29 kristaps 255: break;
256: case SCALE_MAX:
257: abort();
1.30 schwarze 258: /* NOTREACHED */
1.7 kristaps 259: }
260:
1.8 kristaps 261: return(r);
1.7 kristaps 262: }
263:
1.31 ! schwarze 264: #if HAVE_WCHAR
1.15 kristaps 265: static size_t
266: locale_width(const struct termp *p, int c)
267: {
268: int rc;
269:
1.26 schwarze 270: if (c == ASCII_NBRSP)
271: c = ' ';
272: rc = wcwidth(c);
273: if (rc < 0)
274: rc = 0;
275: return(rc);
1.15 kristaps 276: }
277:
278: static void
279: locale_advance(struct termp *p, size_t len)
280: {
1.25 schwarze 281: size_t i;
1.15 kristaps 282:
283: for (i = 0; i < len; i++)
284: putwchar(L' ');
285: }
286:
287: static void
288: locale_endline(struct termp *p)
289: {
290:
291: putwchar(L'\n');
292: }
293:
294: static void
295: locale_letter(struct termp *p, int c)
296: {
1.25 schwarze 297:
1.15 kristaps 298: putwchar(c);
299: }
300: #endif
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