1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * Copyright (c) 2016 by Delphix. All rights reserved. 26 */ 27 28 /* Copyright (c) 1988 AT&T */ 29 /* All Rights Reserved */ 30 31 /* Copyright (c) 1979 Regents of the University of California */ 32 33 /*LINTLIBRARY*/ 34 35 #include <sys/types.h> 36 #include <ctype.h> 37 #include "curses_inc.h" 38 39 /* 40 * Put the character string cp out, with padding. 41 * The number of affected lines is affcnt, and the routine 42 * used to output one character is outc. 43 */ 44 static char *ocp; 45 46 static char * 47 _tpad(char *, int, int (*)(char)); 48 49 static char * 50 _tpad(char *cp, int affcnt, int (*outc)(char x)) 51 { 52 int delay = 0; 53 char *icp = cp; 54 int ignorexon = 0, doaffcnt = 0; 55 56 #ifdef _VR2_COMPAT_CODE 57 /* 58 * Why is this here? 59 * Because mandatory padding must be used for flash_screen 60 * and bell. We cannot force users to code mandatory padding 61 * in their terminfo entries, as that would break compatibility. 62 * We therefore, do it here. 63 * 64 * When compatibility is to be broken, it will go away 65 * and users will be informed that they MUST use mandatory 66 * padding for flash and bell. 67 */ 68 if (ocp == bell || ocp == flash_screen) 69 ignorexon = TRUE; 70 #endif /* _VR2_COMPAT_CODE */ 71 72 /* Eat initial $< */ 73 cp += 2; 74 75 /* Convert the number representing the delay. */ 76 if (isdigit(*cp)) { 77 do 78 delay = delay * 10 + *cp++ - '0'; 79 while (isdigit(*cp)); 80 } 81 delay *= 10; 82 if (*cp == '.') { 83 cp++; 84 if (isdigit(*cp)) 85 delay += *cp - '0'; 86 /* Only one digit to the right of the decimal point. */ 87 while (isdigit(*cp)) 88 cp++; 89 } 90 91 /* 92 * If the delay is followed by a `*', then 93 * multiply by the affected lines count. 94 * If the delay is followed by a '/', then 95 * the delay is done irregardless of xon/xoff. 96 */ 97 /*CONSTCOND*/ 98 while (TRUE) { 99 if (*cp == '/') 100 ignorexon = TRUE; 101 else 102 if (*cp == '*') 103 doaffcnt = TRUE; 104 else 105 break; 106 cp++; 107 } 108 if (doaffcnt) 109 delay *= affcnt; 110 if (*cp == '>') 111 cp++; /* Eat trailing '>' */ 112 else { 113 /* 114 * We got a "$<" with no ">". This is usually caused by 115 * a cursor addressing sequence that happened to generate 116 * $ < . To avoid an infinite loop, we output the $ here 117 * and pass back the rest. 118 */ 119 (*outc)(*icp++); 120 return (icp); 121 } 122 123 /* 124 * If no delay needed, or output speed is 125 * not comprehensible, then don't try to delay. 126 */ 127 if (delay == 0) 128 return (cp); 129 /* 130 * Let handshaking take care of it - no extra cpu load from pads. 131 * Also, this will be more optimal since the pad info is usually 132 * worst case. We only use padding info for such terminals to 133 * estimate the cost of a capability in choosing the cheapest one. 134 * Some capabilities, such as flash_screen, really want the 135 * padding irregardless. 136 */ 137 if (xon_xoff && !ignorexon) 138 return (cp); 139 (void) _delay(delay, outc); 140 return (cp); 141 } 142 143 int 144 tputs(char *cp, int affcnt, int (*outc)(char)) 145 { 146 if (cp != 0) { 147 ocp = cp; 148 149 /* The guts of the string. */ 150 while (*cp) 151 if (*cp == '$' && cp[1] == '<') 152 cp = _tpad(cp, affcnt, outc); 153 else 154 (*outc)(*cp++); 155 } 156 return (OK); 157 } 158