Annotation of mandoc/term_ascii.c, Revision 1.19
1.19 ! schwarze 1: /* $Id: term_ascii.c,v 1.18 2011/09/18 14:14:15 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: {
1.19 ! schwarze 71: const char *toks[3];
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";
! 109: toks[2] = 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);
118: break;
119: default:
120: break;
121: }
122:
123: /* Enforce a lower boundary. */
124: if (p->defrmargin < 58)
125: p->defrmargin = 58;
126:
127: return(p);
1.5 kristaps 128: }
129:
1.14 kristaps 130: void *
131: ascii_alloc(char *outopts)
132: {
133:
134: return(ascii_init(TERMENC_ASCII, outopts));
135: }
1.17 kristaps 136:
137: void *
138: utf8_alloc(char *outopts)
139: {
140:
141: return(ascii_init(TERMENC_UTF8, outopts));
142: }
143:
1.14 kristaps 144:
145: void *
146: locale_alloc(char *outopts)
147: {
148:
149: return(ascii_init(TERMENC_LOCALE, outopts));
150: }
1.5 kristaps 151:
1.6 kristaps 152: /* ARGSUSED */
1.5 kristaps 153: static size_t
1.13 kristaps 154: ascii_width(const struct termp *p, int c)
1.5 kristaps 155: {
156:
157: return(1);
1.1 kristaps 158: }
159:
160: void
161: ascii_free(void *arg)
162: {
163:
164: term_free((struct termp *)arg);
165: }
166:
167: /* ARGSUSED */
168: static void
1.13 kristaps 169: ascii_letter(struct termp *p, int c)
1.1 kristaps 170: {
171:
172: putchar(c);
173: }
174:
175: static void
176: ascii_begin(struct termp *p)
177: {
178:
179: (*p->headf)(p, p->argf);
180: }
181:
182: static void
183: ascii_end(struct termp *p)
184: {
185:
186: (*p->footf)(p, p->argf);
187: }
188:
189: /* ARGSUSED */
190: static void
191: ascii_endline(struct termp *p)
192: {
193:
194: putchar('\n');
195: }
196:
197: /* ARGSUSED */
198: static void
199: ascii_advance(struct termp *p, size_t len)
200: {
201: size_t i;
202:
203: for (i = 0; i < len; i++)
204: putchar(' ');
205: }
1.7 kristaps 206:
207: /* ARGSUSED */
1.8 kristaps 208: static double
1.7 kristaps 209: ascii_hspan(const struct termp *p, const struct roffsu *su)
210: {
211: double r;
212:
213: /*
214: * Approximate based on character width. These are generated
215: * entirely by eyeballing the screen, but appear to be correct.
216: */
217:
218: switch (su->unit) {
219: case (SCALE_CM):
220: r = 4 * su->scale;
221: break;
222: case (SCALE_IN):
223: r = 10 * su->scale;
224: break;
225: case (SCALE_PC):
226: r = (10 * su->scale) / 6;
227: break;
228: case (SCALE_PT):
229: r = (10 * su->scale) / 72;
230: break;
231: case (SCALE_MM):
232: r = su->scale / 1000;
233: break;
234: case (SCALE_VS):
235: r = su->scale * 2 - 1;
236: break;
237: default:
238: r = su->scale;
239: break;
240: }
241:
1.8 kristaps 242: return(r);
1.7 kristaps 243: }
244:
1.15 kristaps 245: #ifdef USE_WCHAR
246: /* ARGSUSED */
247: static size_t
248: locale_width(const struct termp *p, int c)
249: {
250: int rc;
251:
252: return((rc = wcwidth(c)) < 0 ? 0 : rc);
253: }
254:
255: /* ARGSUSED */
256: static void
257: locale_advance(struct termp *p, size_t len)
258: {
259: size_t i;
260:
261: for (i = 0; i < len; i++)
262: putwchar(L' ');
263: }
264:
265: /* ARGSUSED */
266: static void
267: locale_endline(struct termp *p)
268: {
269:
270: putwchar(L'\n');
271: }
272:
273: /* ARGSUSED */
274: static void
275: locale_letter(struct termp *p, int c)
276: {
277:
278: putwchar(c);
279: }
280: #endif
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