Annotation of mandoc/term_ascii.c, Revision 1.24
1.24 ! schwarze 1: /* $Id: term_ascii.c,v 1.23 2014/03/30 19:47:48 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: #ifdef HAVE_CONFIG_H
19: #include "config.h"
20: #endif
21:
22: #include <sys/types.h>
23:
1.15 kristaps 24: #ifdef USE_WCHAR
25: # include <locale.h>
26: #endif
1.1 kristaps 27: #include <stdint.h>
28: #include <stdio.h>
29: #include <stdlib.h>
1.2 kristaps 30: #include <unistd.h>
1.15 kristaps 31: #ifdef USE_WCHAR
32: # include <wchar.h>
33: #endif
1.1 kristaps 34:
1.11 kristaps 35: #include "mandoc.h"
1.22 schwarze 36: #include "mandoc_aux.h"
1.1 kristaps 37: #include "out.h"
38: #include "term.h"
39: #include "main.h"
40:
1.16 kristaps 41: /*
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.
45: */
46: #if 0
1.15 kristaps 47: #if ! defined(__STDC_ISO_10646__)
48: # undef USE_WCHAR
1.16 kristaps 49: #endif
1.15 kristaps 50: #endif
51:
1.14 kristaps 52: static struct termp *ascii_init(enum termenc, char *);
1.8 kristaps 53: static double ascii_hspan(const struct termp *,
1.7 kristaps 54: const struct roffsu *);
1.13 kristaps 55: static size_t ascii_width(const struct termp *, int);
1.7 kristaps 56: static void ascii_advance(struct termp *, size_t);
57: static void ascii_begin(struct termp *);
58: static void ascii_end(struct termp *);
1.1 kristaps 59: static void ascii_endline(struct termp *);
1.13 kristaps 60: static void ascii_letter(struct termp *, int);
1.24 ! schwarze 61: static void ascii_setwidth(struct termp *, int, size_t);
1.1 kristaps 62:
1.15 kristaps 63: #ifdef USE_WCHAR
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);
68: #endif
69:
1.14 kristaps 70: static struct termp *
71: ascii_init(enum termenc enc, char *outopts)
1.1 kristaps 72: {
1.20 schwarze 73: const char *toks[4];
1.1 kristaps 74: char *v;
1.14 kristaps 75: struct termp *p;
1.1 kristaps 76:
1.14 kristaps 77: p = mandoc_calloc(1, sizeof(struct termp));
1.1 kristaps 78:
1.5 kristaps 79: p->tabwidth = 5;
1.23 schwarze 80: p->defrmargin = p->lastrmargin = 78;
1.5 kristaps 81:
1.1 kristaps 82: p->begin = ascii_begin;
83: p->end = ascii_end;
1.15 kristaps 84: p->hspan = ascii_hspan;
85: p->type = TERMTYPE_CHAR;
86:
87: p->enc = TERMENC_ASCII;
88: p->advance = ascii_advance;
1.1 kristaps 89: p->endline = ascii_endline;
1.7 kristaps 90: p->letter = ascii_letter;
1.23 schwarze 91: p->setwidth = ascii_setwidth;
1.5 kristaps 92: p->width = ascii_width;
1.1 kristaps 93:
1.17 kristaps 94: #ifdef USE_WCHAR
95: if (TERMENC_ASCII != enc) {
96: v = TERMENC_LOCALE == enc ?
97: setlocale(LC_ALL, "") :
1.21 schwarze 98: setlocale(LC_CTYPE, "en_US.UTF-8");
1.17 kristaps 99: if (NULL != v && MB_CUR_MAX > 1) {
1.15 kristaps 100: p->enc = enc;
101: p->advance = locale_advance;
102: p->endline = locale_endline;
103: p->letter = locale_letter;
104: p->width = locale_width;
105: }
1.17 kristaps 106: }
1.15 kristaps 107: #endif
108:
1.19 schwarze 109: toks[0] = "indent";
110: toks[1] = "width";
1.20 schwarze 111: toks[2] = "mdoc";
112: toks[3] = NULL;
1.1 kristaps 113:
114: while (outopts && *outopts)
115: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
116: case (0):
1.19 schwarze 117: p->defindent = (size_t)atoi(v);
118: break;
119: case (1):
1.1 kristaps 120: p->defrmargin = (size_t)atoi(v);
1.20 schwarze 121: break;
122: case (2):
123: /*
124: * Temporary, undocumented mode
125: * to imitate mdoc(7) output style.
126: */
127: p->mdocstyle = 1;
128: p->defindent = 5;
1.1 kristaps 129: break;
130: default:
131: break;
132: }
133:
134: /* Enforce a lower boundary. */
135: if (p->defrmargin < 58)
136: p->defrmargin = 58;
137:
138: return(p);
1.5 kristaps 139: }
140:
1.14 kristaps 141: void *
142: ascii_alloc(char *outopts)
143: {
144:
145: return(ascii_init(TERMENC_ASCII, outopts));
146: }
1.17 kristaps 147:
148: void *
149: utf8_alloc(char *outopts)
150: {
151:
152: return(ascii_init(TERMENC_UTF8, outopts));
153: }
154:
1.14 kristaps 155:
156: void *
157: locale_alloc(char *outopts)
158: {
159:
160: return(ascii_init(TERMENC_LOCALE, outopts));
1.23 schwarze 161: }
162:
163: static void
1.24 ! schwarze 164: ascii_setwidth(struct termp *p, int iop, size_t width)
1.23 schwarze 165: {
166:
1.24 ! schwarze 167: p->rmargin = p->defrmargin;
! 168: if (0 < iop)
! 169: p->defrmargin += width;
! 170: else if (0 > iop)
! 171: p->defrmargin -= width;
! 172: else
! 173: p->defrmargin = width ? width : p->lastrmargin;
! 174: p->lastrmargin = p->rmargin;
! 175: p->rmargin = p->maxrmargin = p->defrmargin;
1.14 kristaps 176: }
1.5 kristaps 177:
1.6 kristaps 178: /* ARGSUSED */
1.5 kristaps 179: static size_t
1.13 kristaps 180: ascii_width(const struct termp *p, int c)
1.5 kristaps 181: {
182:
183: return(1);
1.1 kristaps 184: }
185:
186: void
187: ascii_free(void *arg)
188: {
189:
190: term_free((struct termp *)arg);
191: }
192:
193: /* ARGSUSED */
194: static void
1.13 kristaps 195: ascii_letter(struct termp *p, int c)
1.1 kristaps 196: {
197:
198: putchar(c);
199: }
200:
201: static void
202: ascii_begin(struct termp *p)
203: {
204:
205: (*p->headf)(p, p->argf);
206: }
207:
208: static void
209: ascii_end(struct termp *p)
210: {
211:
212: (*p->footf)(p, p->argf);
213: }
214:
215: /* ARGSUSED */
216: static void
217: ascii_endline(struct termp *p)
218: {
219:
220: putchar('\n');
221: }
222:
223: /* ARGSUSED */
224: static void
225: ascii_advance(struct termp *p, size_t len)
226: {
227: size_t i;
228:
229: for (i = 0; i < len; i++)
230: putchar(' ');
231: }
1.7 kristaps 232:
233: /* ARGSUSED */
1.8 kristaps 234: static double
1.7 kristaps 235: ascii_hspan(const struct termp *p, const struct roffsu *su)
236: {
237: double r;
238:
239: /*
240: * Approximate based on character width. These are generated
241: * entirely by eyeballing the screen, but appear to be correct.
242: */
243:
244: switch (su->unit) {
245: case (SCALE_CM):
246: r = 4 * su->scale;
247: break;
248: case (SCALE_IN):
249: r = 10 * su->scale;
250: break;
251: case (SCALE_PC):
252: r = (10 * su->scale) / 6;
253: break;
254: case (SCALE_PT):
255: r = (10 * su->scale) / 72;
256: break;
257: case (SCALE_MM):
258: r = su->scale / 1000;
259: break;
260: case (SCALE_VS):
261: r = su->scale * 2 - 1;
262: break;
263: default:
264: r = su->scale;
265: break;
266: }
267:
1.8 kristaps 268: return(r);
1.7 kristaps 269: }
270:
1.15 kristaps 271: #ifdef USE_WCHAR
272: /* ARGSUSED */
273: static size_t
274: locale_width(const struct termp *p, int c)
275: {
276: int rc;
277:
278: return((rc = wcwidth(c)) < 0 ? 0 : rc);
279: }
280:
281: /* ARGSUSED */
282: static void
283: locale_advance(struct termp *p, size_t len)
284: {
285: size_t i;
286:
287: for (i = 0; i < len; i++)
288: putwchar(L' ');
289: }
290:
291: /* ARGSUSED */
292: static void
293: locale_endline(struct termp *p)
294: {
295:
296: putwchar(L'\n');
297: }
298:
299: /* ARGSUSED */
300: static void
301: locale_letter(struct termp *p, int c)
302: {
303:
304: putwchar(c);
305: }
306: #endif
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