Annotation of mandoc/term_ascii.c, Revision 1.16
1.16 ! kristaps 1: /* $Id: term_ascii.c,v 1.15 2011/05/17 22:32:45 kristaps Exp $ */
1.1 kristaps 2: /*
1.9 schwarze 3: * Copyright (c) 2010 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: {
71: const char *toks[2];
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:
1.15 kristaps 92: #if defined (USE_WCHAR)
93: if (TERMENC_LOCALE == enc)
94: if (setlocale(LC_ALL, "") && MB_CUR_MAX > 1) {
95: p->enc = enc;
96: p->advance = locale_advance;
97: p->endline = locale_endline;
98: p->letter = locale_letter;
99: p->width = locale_width;
100: }
101: #endif
102:
1.1 kristaps 103: toks[0] = "width";
104: toks[1] = NULL;
105:
106: while (outopts && *outopts)
107: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
108: case (0):
109: p->defrmargin = (size_t)atoi(v);
110: break;
111: default:
112: break;
113: }
114:
115: /* Enforce a lower boundary. */
116: if (p->defrmargin < 58)
117: p->defrmargin = 58;
118:
119: return(p);
1.5 kristaps 120: }
121:
1.14 kristaps 122: void *
123: ascii_alloc(char *outopts)
124: {
125:
126: return(ascii_init(TERMENC_ASCII, outopts));
127: }
128:
129: void *
130: locale_alloc(char *outopts)
131: {
132:
133: return(ascii_init(TERMENC_LOCALE, outopts));
134: }
1.5 kristaps 135:
1.6 kristaps 136: /* ARGSUSED */
1.5 kristaps 137: static size_t
1.13 kristaps 138: ascii_width(const struct termp *p, int c)
1.5 kristaps 139: {
140:
141: return(1);
1.1 kristaps 142: }
143:
144: void
145: ascii_free(void *arg)
146: {
147:
148: term_free((struct termp *)arg);
149: }
150:
151: /* ARGSUSED */
152: static void
1.13 kristaps 153: ascii_letter(struct termp *p, int c)
1.1 kristaps 154: {
155:
156: putchar(c);
157: }
158:
159: static void
160: ascii_begin(struct termp *p)
161: {
162:
163: (*p->headf)(p, p->argf);
164: }
165:
166: static void
167: ascii_end(struct termp *p)
168: {
169:
170: (*p->footf)(p, p->argf);
171: }
172:
173: /* ARGSUSED */
174: static void
175: ascii_endline(struct termp *p)
176: {
177:
178: putchar('\n');
179: }
180:
181: /* ARGSUSED */
182: static void
183: ascii_advance(struct termp *p, size_t len)
184: {
185: size_t i;
186:
187: for (i = 0; i < len; i++)
188: putchar(' ');
189: }
1.7 kristaps 190:
191: /* ARGSUSED */
1.8 kristaps 192: static double
1.7 kristaps 193: ascii_hspan(const struct termp *p, const struct roffsu *su)
194: {
195: double r;
196:
197: /*
198: * Approximate based on character width. These are generated
199: * entirely by eyeballing the screen, but appear to be correct.
200: */
201:
202: switch (su->unit) {
203: case (SCALE_CM):
204: r = 4 * su->scale;
205: break;
206: case (SCALE_IN):
207: r = 10 * su->scale;
208: break;
209: case (SCALE_PC):
210: r = (10 * su->scale) / 6;
211: break;
212: case (SCALE_PT):
213: r = (10 * su->scale) / 72;
214: break;
215: case (SCALE_MM):
216: r = su->scale / 1000;
217: break;
218: case (SCALE_VS):
219: r = su->scale * 2 - 1;
220: break;
221: default:
222: r = su->scale;
223: break;
224: }
225:
1.8 kristaps 226: return(r);
1.7 kristaps 227: }
228:
1.15 kristaps 229: #ifdef USE_WCHAR
230: /* ARGSUSED */
231: static size_t
232: locale_width(const struct termp *p, int c)
233: {
234: int rc;
235:
236: return((rc = wcwidth(c)) < 0 ? 0 : rc);
237: }
238:
239: /* ARGSUSED */
240: static void
241: locale_advance(struct termp *p, size_t len)
242: {
243: size_t i;
244:
245: for (i = 0; i < len; i++)
246: putwchar(L' ');
247: }
248:
249: /* ARGSUSED */
250: static void
251: locale_endline(struct termp *p)
252: {
253:
254: putwchar(L'\n');
255: }
256:
257: /* ARGSUSED */
258: static void
259: locale_letter(struct termp *p, int c)
260: {
261:
262: putwchar(c);
263: }
264: #endif
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