Annotation of mandoc/term_ascii.c, Revision 1.11
1.11 ! kristaps 1: /* $Id: term_ascii.c,v 1.10 2010/09/04 20:18:53 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>
24: #include <stdint.h>
25: #include <stdio.h>
26: #include <stdlib.h>
1.2 kristaps 27: #include <unistd.h>
1.1 kristaps 28:
1.11 ! kristaps 29: #include "mandoc.h"
1.1 kristaps 30: #include "out.h"
31: #include "term.h"
32: #include "main.h"
33:
1.8 kristaps 34: static double ascii_hspan(const struct termp *,
1.7 kristaps 35: const struct roffsu *);
36: static size_t ascii_width(const struct termp *, char);
37: static void ascii_advance(struct termp *, size_t);
38: static void ascii_begin(struct termp *);
39: static void ascii_end(struct termp *);
1.1 kristaps 40: static void ascii_endline(struct termp *);
41: static void ascii_letter(struct termp *, char);
42:
43:
44: void *
45: ascii_alloc(char *outopts)
46: {
47: struct termp *p;
48: const char *toks[2];
49: char *v;
50:
51: if (NULL == (p = term_alloc(TERMENC_ASCII)))
52: return(NULL);
53:
1.5 kristaps 54: p->tabwidth = 5;
55: p->defrmargin = 78;
56:
1.7 kristaps 57: p->advance = ascii_advance;
1.1 kristaps 58: p->begin = ascii_begin;
59: p->end = ascii_end;
60: p->endline = ascii_endline;
1.7 kristaps 61: p->hspan = ascii_hspan;
62: p->letter = ascii_letter;
63: p->type = TERMTYPE_CHAR;
1.5 kristaps 64: p->width = ascii_width;
1.1 kristaps 65:
66: toks[0] = "width";
67: toks[1] = NULL;
68:
69: while (outopts && *outopts)
70: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
71: case (0):
72: p->defrmargin = (size_t)atoi(v);
73: break;
74: default:
75: break;
76: }
77:
78: /* Enforce a lower boundary. */
79: if (p->defrmargin < 58)
80: p->defrmargin = 58;
81:
82: return(p);
1.5 kristaps 83: }
84:
85:
1.6 kristaps 86: /* ARGSUSED */
1.5 kristaps 87: static size_t
88: ascii_width(const struct termp *p, char c)
89: {
90:
91: return(1);
1.1 kristaps 92: }
93:
94:
95: void
96: ascii_free(void *arg)
97: {
98:
99: term_free((struct termp *)arg);
100: }
101:
102:
103: /* ARGSUSED */
104: static void
105: ascii_letter(struct termp *p, char c)
106: {
107:
1.10 kristaps 108: /* LINTED */
1.1 kristaps 109: putchar(c);
110: }
111:
112:
113: static void
114: ascii_begin(struct termp *p)
115: {
116:
117: (*p->headf)(p, p->argf);
118: }
119:
120:
121: static void
122: ascii_end(struct termp *p)
123: {
124:
125: (*p->footf)(p, p->argf);
126: }
127:
128:
129: /* ARGSUSED */
130: static void
131: ascii_endline(struct termp *p)
132: {
133:
134: putchar('\n');
135: }
136:
137:
138: /* ARGSUSED */
139: static void
140: ascii_advance(struct termp *p, size_t len)
141: {
142: size_t i;
143:
144: /* Just print whitespace on the terminal. */
145: for (i = 0; i < len; i++)
146: putchar(' ');
147: }
1.7 kristaps 148:
149:
150: /* ARGSUSED */
1.8 kristaps 151: static double
1.7 kristaps 152: ascii_hspan(const struct termp *p, const struct roffsu *su)
153: {
154: double r;
155:
156: /*
157: * Approximate based on character width. These are generated
158: * entirely by eyeballing the screen, but appear to be correct.
159: */
160:
161: switch (su->unit) {
162: case (SCALE_CM):
163: r = 4 * su->scale;
164: break;
165: case (SCALE_IN):
166: r = 10 * su->scale;
167: break;
168: case (SCALE_PC):
169: r = (10 * su->scale) / 6;
170: break;
171: case (SCALE_PT):
172: r = (10 * su->scale) / 72;
173: break;
174: case (SCALE_MM):
175: r = su->scale / 1000;
176: break;
177: case (SCALE_VS):
178: r = su->scale * 2 - 1;
179: break;
180: default:
181: r = su->scale;
182: break;
183: }
184:
1.8 kristaps 185: return(r);
1.7 kristaps 186: }
187:
CVSweb
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to term_ascii.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [cvsweb.bsd.lv] / mandoc