Annotation of mandoc/term_ascii.c, Revision 1.20
1.20 ! schwarze 1: /* $Id: term_ascii.c,v 1.19 2011/11/13 13:15:14 schwarze Exp $ */
1.1 kristaps 2: /*
1.18 schwarze 3: * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
21: #include <sys/types.h>
22:
23: #include <assert.h>
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"
1.1 kristaps 36: #include "out.h"
37: #include "term.h"
38: #include "main.h"
39:
1.16 kristaps 40: /*
41: * Sadly, this doesn't seem to be defined on systems even when they
42: * support it. For the time being, remove it and let those compiling
43: * the software decide for themselves what to use.
44: */
45: #if 0
1.15 kristaps 46: #if ! defined(__STDC_ISO_10646__)
47: # undef USE_WCHAR
1.16 kristaps 48: #endif
1.15 kristaps 49: #endif
50:
1.14 kristaps 51: static struct termp *ascii_init(enum termenc, char *);
1.8 kristaps 52: static double ascii_hspan(const struct termp *,
1.7 kristaps 53: const struct roffsu *);
1.13 kristaps 54: static size_t ascii_width(const struct termp *, int);
1.7 kristaps 55: static void ascii_advance(struct termp *, size_t);
56: static void ascii_begin(struct termp *);
57: static void ascii_end(struct termp *);
1.1 kristaps 58: static void ascii_endline(struct termp *);
1.13 kristaps 59: static void ascii_letter(struct termp *, int);
1.1 kristaps 60:
1.15 kristaps 61: #ifdef USE_WCHAR
62: static void locale_advance(struct termp *, size_t);
63: static void locale_endline(struct termp *);
64: static void locale_letter(struct termp *, int);
65: static size_t locale_width(const struct termp *, int);
66: #endif
67:
1.14 kristaps 68: static struct termp *
69: ascii_init(enum termenc enc, char *outopts)
1.1 kristaps 70: {
1.20 ! schwarze 71: const char *toks[4];
1.1 kristaps 72: char *v;
1.14 kristaps 73: struct termp *p;
1.1 kristaps 74:
1.14 kristaps 75: p = mandoc_calloc(1, sizeof(struct termp));
76: p->enc = enc;
1.1 kristaps 77:
1.5 kristaps 78: p->tabwidth = 5;
79: p->defrmargin = 78;
80:
1.1 kristaps 81: p->begin = ascii_begin;
82: p->end = ascii_end;
1.15 kristaps 83: p->hspan = ascii_hspan;
84: p->type = TERMTYPE_CHAR;
85:
86: p->enc = TERMENC_ASCII;
87: p->advance = ascii_advance;
1.1 kristaps 88: p->endline = ascii_endline;
1.7 kristaps 89: p->letter = ascii_letter;
1.5 kristaps 90: p->width = ascii_width;
1.1 kristaps 91:
1.17 kristaps 92: #ifdef USE_WCHAR
93: if (TERMENC_ASCII != enc) {
94: v = TERMENC_LOCALE == enc ?
95: setlocale(LC_ALL, "") :
96: setlocale(LC_CTYPE, "UTF-8");
97: if (NULL != v && MB_CUR_MAX > 1) {
1.15 kristaps 98: p->enc = enc;
99: p->advance = locale_advance;
100: p->endline = locale_endline;
101: p->letter = locale_letter;
102: p->width = locale_width;
103: }
1.17 kristaps 104: }
1.15 kristaps 105: #endif
106:
1.19 schwarze 107: toks[0] = "indent";
108: toks[1] = "width";
1.20 ! schwarze 109: toks[2] = "mdoc";
! 110: toks[3] = NULL;
1.1 kristaps 111:
112: while (outopts && *outopts)
113: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
114: case (0):
1.19 schwarze 115: p->defindent = (size_t)atoi(v);
116: break;
117: case (1):
1.1 kristaps 118: p->defrmargin = (size_t)atoi(v);
1.20 ! schwarze 119: break;
! 120: case (2):
! 121: /*
! 122: * Temporary, undocumented mode
! 123: * to imitate mdoc(7) output style.
! 124: */
! 125: p->mdocstyle = 1;
! 126: p->defindent = 5;
1.1 kristaps 127: break;
128: default:
129: break;
130: }
131:
132: /* Enforce a lower boundary. */
133: if (p->defrmargin < 58)
134: p->defrmargin = 58;
135:
136: return(p);
1.5 kristaps 137: }
138:
1.14 kristaps 139: void *
140: ascii_alloc(char *outopts)
141: {
142:
143: return(ascii_init(TERMENC_ASCII, outopts));
144: }
1.17 kristaps 145:
146: void *
147: utf8_alloc(char *outopts)
148: {
149:
150: return(ascii_init(TERMENC_UTF8, outopts));
151: }
152:
1.14 kristaps 153:
154: void *
155: locale_alloc(char *outopts)
156: {
157:
158: return(ascii_init(TERMENC_LOCALE, outopts));
159: }
1.5 kristaps 160:
1.6 kristaps 161: /* ARGSUSED */
1.5 kristaps 162: static size_t
1.13 kristaps 163: ascii_width(const struct termp *p, int c)
1.5 kristaps 164: {
165:
166: return(1);
1.1 kristaps 167: }
168:
169: void
170: ascii_free(void *arg)
171: {
172:
173: term_free((struct termp *)arg);
174: }
175:
176: /* ARGSUSED */
177: static void
1.13 kristaps 178: ascii_letter(struct termp *p, int c)
1.1 kristaps 179: {
180:
181: putchar(c);
182: }
183:
184: static void
185: ascii_begin(struct termp *p)
186: {
187:
188: (*p->headf)(p, p->argf);
189: }
190:
191: static void
192: ascii_end(struct termp *p)
193: {
194:
195: (*p->footf)(p, p->argf);
196: }
197:
198: /* ARGSUSED */
199: static void
200: ascii_endline(struct termp *p)
201: {
202:
203: putchar('\n');
204: }
205:
206: /* ARGSUSED */
207: static void
208: ascii_advance(struct termp *p, size_t len)
209: {
210: size_t i;
211:
212: for (i = 0; i < len; i++)
213: putchar(' ');
214: }
1.7 kristaps 215:
216: /* ARGSUSED */
1.8 kristaps 217: static double
1.7 kristaps 218: ascii_hspan(const struct termp *p, const struct roffsu *su)
219: {
220: double r;
221:
222: /*
223: * Approximate based on character width. These are generated
224: * entirely by eyeballing the screen, but appear to be correct.
225: */
226:
227: switch (su->unit) {
228: case (SCALE_CM):
229: r = 4 * su->scale;
230: break;
231: case (SCALE_IN):
232: r = 10 * su->scale;
233: break;
234: case (SCALE_PC):
235: r = (10 * su->scale) / 6;
236: break;
237: case (SCALE_PT):
238: r = (10 * su->scale) / 72;
239: break;
240: case (SCALE_MM):
241: r = su->scale / 1000;
242: break;
243: case (SCALE_VS):
244: r = su->scale * 2 - 1;
245: break;
246: default:
247: r = su->scale;
248: break;
249: }
250:
1.8 kristaps 251: return(r);
1.7 kristaps 252: }
253:
1.15 kristaps 254: #ifdef USE_WCHAR
255: /* ARGSUSED */
256: static size_t
257: locale_width(const struct termp *p, int c)
258: {
259: int rc;
260:
261: return((rc = wcwidth(c)) < 0 ? 0 : rc);
262: }
263:
264: /* ARGSUSED */
265: static void
266: locale_advance(struct termp *p, size_t len)
267: {
268: size_t i;
269:
270: for (i = 0; i < len; i++)
271: putwchar(L' ');
272: }
273:
274: /* ARGSUSED */
275: static void
276: locale_endline(struct termp *p)
277: {
278:
279: putwchar(L'\n');
280: }
281:
282: /* ARGSUSED */
283: static void
284: locale_letter(struct termp *p, int c)
285: {
286:
287: putwchar(c);
288: }
289: #endif
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