1 /* $Vendor-Id: term_ascii.c,v 1.4 2010/06/19 20:46:28 kristaps Exp $ */ 2 /* 3 * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv> 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> 27 #include <unistd.h> 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 } 129