Annotation of mandoc/term_ascii.c, Revision 1.22
1.22 ! schwarze 1: /* $Id: term_ascii.c,v 1.21 2013/06/01 14:27:20 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:
1.15 kristaps 23: #ifdef USE_WCHAR
24: # include <locale.h>
25: #endif
1.1 kristaps 26: #include <stdint.h>
27: #include <stdio.h>
28: #include <stdlib.h>
1.2 kristaps 29: #include <unistd.h>
1.15 kristaps 30: #ifdef USE_WCHAR
31: # include <wchar.h>
32: #endif
1.1 kristaps 33:
1.11 kristaps 34: #include "mandoc.h"
1.22 ! schwarze 35: #include "mandoc_aux.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));
1.1 kristaps 76:
1.5 kristaps 77: p->tabwidth = 5;
78: p->defrmargin = 78;
79:
1.1 kristaps 80: p->begin = ascii_begin;
81: p->end = ascii_end;
1.15 kristaps 82: p->hspan = ascii_hspan;
83: p->type = TERMTYPE_CHAR;
84:
85: p->enc = TERMENC_ASCII;
86: p->advance = ascii_advance;
1.1 kristaps 87: p->endline = ascii_endline;
1.7 kristaps 88: p->letter = ascii_letter;
1.5 kristaps 89: p->width = ascii_width;
1.1 kristaps 90:
1.17 kristaps 91: #ifdef USE_WCHAR
92: if (TERMENC_ASCII != enc) {
93: v = TERMENC_LOCALE == enc ?
94: setlocale(LC_ALL, "") :
1.21 schwarze 95: setlocale(LC_CTYPE, "en_US.UTF-8");
1.17 kristaps 96: if (NULL != v && MB_CUR_MAX > 1) {
1.15 kristaps 97: p->enc = enc;
98: p->advance = locale_advance;
99: p->endline = locale_endline;
100: p->letter = locale_letter;
101: p->width = locale_width;
102: }
1.17 kristaps 103: }
1.15 kristaps 104: #endif
105:
1.19 schwarze 106: toks[0] = "indent";
107: toks[1] = "width";
1.20 schwarze 108: toks[2] = "mdoc";
109: toks[3] = NULL;
1.1 kristaps 110:
111: while (outopts && *outopts)
112: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
113: case (0):
1.19 schwarze 114: p->defindent = (size_t)atoi(v);
115: break;
116: case (1):
1.1 kristaps 117: p->defrmargin = (size_t)atoi(v);
1.20 schwarze 118: break;
119: case (2):
120: /*
121: * Temporary, undocumented mode
122: * to imitate mdoc(7) output style.
123: */
124: p->mdocstyle = 1;
125: p->defindent = 5;
1.1 kristaps 126: break;
127: default:
128: break;
129: }
130:
131: /* Enforce a lower boundary. */
132: if (p->defrmargin < 58)
133: p->defrmargin = 58;
134:
135: return(p);
1.5 kristaps 136: }
137:
1.14 kristaps 138: void *
139: ascii_alloc(char *outopts)
140: {
141:
142: return(ascii_init(TERMENC_ASCII, outopts));
143: }
1.17 kristaps 144:
145: void *
146: utf8_alloc(char *outopts)
147: {
148:
149: return(ascii_init(TERMENC_UTF8, outopts));
150: }
151:
1.14 kristaps 152:
153: void *
154: locale_alloc(char *outopts)
155: {
156:
157: return(ascii_init(TERMENC_LOCALE, outopts));
158: }
1.5 kristaps 159:
1.6 kristaps 160: /* ARGSUSED */
1.5 kristaps 161: static size_t
1.13 kristaps 162: ascii_width(const struct termp *p, int c)
1.5 kristaps 163: {
164:
165: return(1);
1.1 kristaps 166: }
167:
168: void
169: ascii_free(void *arg)
170: {
171:
172: term_free((struct termp *)arg);
173: }
174:
175: /* ARGSUSED */
176: static void
1.13 kristaps 177: ascii_letter(struct termp *p, int c)
1.1 kristaps 178: {
179:
180: putchar(c);
181: }
182:
183: static void
184: ascii_begin(struct termp *p)
185: {
186:
187: (*p->headf)(p, p->argf);
188: }
189:
190: static void
191: ascii_end(struct termp *p)
192: {
193:
194: (*p->footf)(p, p->argf);
195: }
196:
197: /* ARGSUSED */
198: static void
199: ascii_endline(struct termp *p)
200: {
201:
202: putchar('\n');
203: }
204:
205: /* ARGSUSED */
206: static void
207: ascii_advance(struct termp *p, size_t len)
208: {
209: size_t i;
210:
211: for (i = 0; i < len; i++)
212: putchar(' ');
213: }
1.7 kristaps 214:
215: /* ARGSUSED */
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: /*
222: * Approximate based on character width. These are generated
223: * entirely by eyeballing the screen, but appear to be correct.
224: */
225:
226: switch (su->unit) {
227: case (SCALE_CM):
228: r = 4 * su->scale;
229: break;
230: case (SCALE_IN):
231: r = 10 * su->scale;
232: break;
233: case (SCALE_PC):
234: r = (10 * su->scale) / 6;
235: break;
236: case (SCALE_PT):
237: r = (10 * su->scale) / 72;
238: break;
239: case (SCALE_MM):
240: r = su->scale / 1000;
241: break;
242: case (SCALE_VS):
243: r = su->scale * 2 - 1;
244: break;
245: default:
246: r = su->scale;
247: break;
248: }
249:
1.8 kristaps 250: return(r);
1.7 kristaps 251: }
252:
1.15 kristaps 253: #ifdef USE_WCHAR
254: /* ARGSUSED */
255: static size_t
256: locale_width(const struct termp *p, int c)
257: {
258: int rc;
259:
260: return((rc = wcwidth(c)) < 0 ? 0 : rc);
261: }
262:
263: /* ARGSUSED */
264: static void
265: locale_advance(struct termp *p, size_t len)
266: {
267: size_t i;
268:
269: for (i = 0; i < len; i++)
270: putwchar(L' ');
271: }
272:
273: /* ARGSUSED */
274: static void
275: locale_endline(struct termp *p)
276: {
277:
278: putwchar(L'\n');
279: }
280:
281: /* ARGSUSED */
282: static void
283: locale_letter(struct termp *p, int c)
284: {
285:
286: putwchar(c);
287: }
288: #endif
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