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Annotation of mandoc/term_ascii.c, Revision 1.4

1.4     ! kristaps    1: /*     $Id: term_ascii.c,v 1.3 2010/06/09 08:07:13 kristaps Exp $ */
1.1       kristaps    2: /*
1.4     ! kristaps    3:  * Copyright (c) 2008, 2009 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:
                     29: #include "out.h"
                     30: #include "term.h"
                     31: #include "main.h"
                     32:
                     33: static void              ascii_endline(struct termp *);
                     34: static void              ascii_letter(struct termp *, char);
                     35: static void              ascii_begin(struct termp *);
                     36: static void              ascii_advance(struct termp *, size_t);
                     37: static void              ascii_end(struct termp *);
                     38:
                     39:
                     40: void *
                     41: ascii_alloc(char *outopts)
                     42: {
                     43:        struct termp    *p;
                     44:        const char      *toks[2];
                     45:        char            *v;
                     46:
                     47:        if (NULL == (p = term_alloc(TERMENC_ASCII)))
                     48:                return(NULL);
                     49:
                     50:        p->type = TERMTYPE_CHAR;
                     51:        p->letter = ascii_letter;
                     52:        p->begin = ascii_begin;
                     53:        p->end = ascii_end;
                     54:        p->endline = ascii_endline;
                     55:        p->advance = ascii_advance;
                     56:
                     57:        toks[0] = "width";
                     58:        toks[1] = NULL;
                     59:
                     60:        while (outopts && *outopts)
                     61:                switch (getsubopt(&outopts, UNCONST(toks), &v)) {
                     62:                case (0):
                     63:                        p->defrmargin = (size_t)atoi(v);
                     64:                        break;
                     65:                default:
                     66:                        break;
                     67:                }
                     68:
                     69:        /* Enforce a lower boundary. */
                     70:        if (p->defrmargin < 58)
                     71:                p->defrmargin = 58;
                     72:
                     73:        return(p);
                     74: }
                     75:
                     76:
                     77: void
                     78: ascii_free(void *arg)
                     79: {
                     80:
                     81:        term_free((struct termp *)arg);
                     82: }
                     83:
                     84:
                     85: /* ARGSUSED */
                     86: static void
                     87: ascii_letter(struct termp *p, char c)
                     88: {
                     89:
                     90:        putchar(c);
                     91: }
                     92:
                     93:
                     94: static void
                     95: ascii_begin(struct termp *p)
                     96: {
                     97:
                     98:        (*p->headf)(p, p->argf);
                     99: }
                    100:
                    101:
                    102: static void
                    103: ascii_end(struct termp *p)
                    104: {
                    105:
                    106:        (*p->footf)(p, p->argf);
                    107: }
                    108:
                    109:
                    110: /* ARGSUSED */
                    111: static void
                    112: ascii_endline(struct termp *p)
                    113: {
                    114:
                    115:        putchar('\n');
                    116: }
                    117:
                    118:
                    119: /* ARGSUSED */
                    120: static void
                    121: ascii_advance(struct termp *p, size_t len)
                    122: {
                    123:        size_t          i;
                    124:
                    125:        /* Just print whitespace on the terminal. */
                    126:        for (i = 0; i < len; i++)
                    127:                putchar(' ');
                    128: }

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