Annotation of mandoc/term_ascii.c, Revision 1.28
1.28 ! schwarze 1: /* $Id: term_ascii.c,v 1.27 2014/08/01 19:25:52 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:
1.15 kristaps 22: #ifdef USE_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>
1.15 kristaps 29: #ifdef USE_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:
1.16 kristaps 39: /*
40: * Sadly, this doesn't seem to be defined on systems even when they
41: * support it. For the time being, remove it and let those compiling
42: * the software decide for themselves what to use.
43: */
44: #if 0
1.15 kristaps 45: #if ! defined(__STDC_ISO_10646__)
46: # undef USE_WCHAR
1.16 kristaps 47: #endif
1.15 kristaps 48: #endif
49:
1.14 kristaps 50: static struct termp *ascii_init(enum termenc, char *);
1.8 kristaps 51: static double ascii_hspan(const struct termp *,
1.7 kristaps 52: const struct roffsu *);
1.13 kristaps 53: static size_t ascii_width(const struct termp *, int);
1.7 kristaps 54: static void ascii_advance(struct termp *, size_t);
55: static void ascii_begin(struct termp *);
56: static void ascii_end(struct termp *);
1.1 kristaps 57: static void ascii_endline(struct termp *);
1.13 kristaps 58: static void ascii_letter(struct termp *, int);
1.24 schwarze 59: static void ascii_setwidth(struct termp *, int, size_t);
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:
1.25 schwarze 68:
1.14 kristaps 69: static struct termp *
70: ascii_init(enum termenc enc, char *outopts)
1.1 kristaps 71: {
1.20 schwarze 72: const char *toks[4];
1.1 kristaps 73: char *v;
1.14 kristaps 74: struct termp *p;
1.1 kristaps 75:
1.14 kristaps 76: p = mandoc_calloc(1, sizeof(struct termp));
1.1 kristaps 77:
1.5 kristaps 78: p->tabwidth = 5;
1.23 schwarze 79: p->defrmargin = p->lastrmargin = 78;
1.5 kristaps 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;
1.23 schwarze 90: p->setwidth = ascii_setwidth;
1.5 kristaps 91: p->width = ascii_width;
1.1 kristaps 92:
1.17 kristaps 93: #ifdef USE_WCHAR
94: if (TERMENC_ASCII != enc) {
95: v = TERMENC_LOCALE == enc ?
1.25 schwarze 96: setlocale(LC_ALL, "") :
97: setlocale(LC_CTYPE, "en_US.UTF-8");
1.17 kristaps 98: if (NULL != v && MB_CUR_MAX > 1) {
1.15 kristaps 99: p->enc = enc;
100: p->advance = locale_advance;
101: p->endline = locale_endline;
102: p->letter = locale_letter;
103: p->width = locale_width;
104: }
1.17 kristaps 105: }
1.15 kristaps 106: #endif
107:
1.19 schwarze 108: toks[0] = "indent";
109: toks[1] = "width";
1.20 schwarze 110: toks[2] = "mdoc";
111: toks[3] = NULL;
1.1 kristaps 112:
113: while (outopts && *outopts)
114: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.25 schwarze 115: case 0:
1.19 schwarze 116: p->defindent = (size_t)atoi(v);
117: break;
1.25 schwarze 118: case 1:
1.1 kristaps 119: p->defrmargin = (size_t)atoi(v);
1.20 schwarze 120: break;
1.25 schwarze 121: case 2:
1.20 schwarze 122: /*
123: * Temporary, undocumented mode
124: * to imitate mdoc(7) output style.
125: */
126: p->mdocstyle = 1;
127: p->defindent = 5;
1.1 kristaps 128: break;
129: default:
130: break;
131: }
132:
133: /* Enforce a lower boundary. */
134: if (p->defrmargin < 58)
135: p->defrmargin = 58;
136:
137: return(p);
1.5 kristaps 138: }
139:
1.14 kristaps 140: void *
141: ascii_alloc(char *outopts)
142: {
143:
144: return(ascii_init(TERMENC_ASCII, outopts));
145: }
1.17 kristaps 146:
147: void *
148: utf8_alloc(char *outopts)
149: {
150:
151: return(ascii_init(TERMENC_UTF8, outopts));
152: }
153:
1.14 kristaps 154: void *
155: locale_alloc(char *outopts)
156: {
157:
158: return(ascii_init(TERMENC_LOCALE, outopts));
1.23 schwarze 159: }
160:
161: static void
1.24 schwarze 162: ascii_setwidth(struct termp *p, int iop, size_t width)
1.23 schwarze 163: {
164:
1.24 schwarze 165: p->rmargin = p->defrmargin;
166: if (0 < iop)
167: p->defrmargin += width;
168: else if (0 > iop)
169: p->defrmargin -= width;
170: else
171: p->defrmargin = width ? width : p->lastrmargin;
172: p->lastrmargin = p->rmargin;
173: p->rmargin = p->maxrmargin = p->defrmargin;
1.14 kristaps 174: }
1.5 kristaps 175:
176: static size_t
1.13 kristaps 177: ascii_width(const struct termp *p, int c)
1.5 kristaps 178: {
179:
180: return(1);
1.1 kristaps 181: }
182:
183: void
184: ascii_free(void *arg)
185: {
186:
187: term_free((struct termp *)arg);
188: }
189:
190: static void
1.13 kristaps 191: ascii_letter(struct termp *p, int c)
1.1 kristaps 192: {
1.25 schwarze 193:
1.1 kristaps 194: putchar(c);
195: }
196:
197: static void
198: ascii_begin(struct termp *p)
199: {
200:
201: (*p->headf)(p, p->argf);
202: }
203:
204: static void
205: ascii_end(struct termp *p)
206: {
207:
208: (*p->footf)(p, p->argf);
209: }
210:
211: static void
212: ascii_endline(struct termp *p)
213: {
214:
215: putchar('\n');
216: }
217:
218: static void
219: ascii_advance(struct termp *p, size_t len)
220: {
1.25 schwarze 221: size_t i;
1.1 kristaps 222:
223: for (i = 0; i < len; i++)
224: putchar(' ');
225: }
1.7 kristaps 226:
1.8 kristaps 227: static double
1.7 kristaps 228: ascii_hspan(const struct termp *p, const struct roffsu *su)
229: {
230: double r;
231:
232: /*
233: * Approximate based on character width. These are generated
234: * entirely by eyeballing the screen, but appear to be correct.
235: */
236:
237: switch (su->unit) {
1.25 schwarze 238: case SCALE_CM:
1.27 schwarze 239: r = su->scale * 4.0;
1.7 kristaps 240: break;
1.25 schwarze 241: case SCALE_IN:
1.27 schwarze 242: r = su->scale * 10.0;
1.7 kristaps 243: break;
1.25 schwarze 244: case SCALE_PC:
1.27 schwarze 245: r = (su->scale * 10.0) / 6.0;
1.7 kristaps 246: break;
1.25 schwarze 247: case SCALE_PT:
1.27 schwarze 248: r = (su->scale * 10.0) / 72.0;
1.7 kristaps 249: break;
1.25 schwarze 250: case SCALE_MM:
1.27 schwarze 251: r = su->scale / 1000.0;
1.7 kristaps 252: break;
1.25 schwarze 253: case SCALE_VS:
1.27 schwarze 254: r = su->scale * 2.0 - 1.0;
1.7 kristaps 255: break;
256: default:
257: r = su->scale;
258: break;
259: }
260:
1.8 kristaps 261: return(r);
1.7 kristaps 262: }
263:
1.15 kristaps 264: #ifdef USE_WCHAR
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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