1 /* @(#)getcom.c 8.1 (Berkeley) 5/31/93 */ 2 /* $NetBSD: getcom.c,v 1.14 2012/01/16 17:38:16 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include "extern.h" 34 35 char * 36 getcom(char *buf, int size, const char *prompt, const char *error) 37 { 38 for (;;) { 39 fputs(prompt, stdout); 40 if (fgets(buf, size, stdin) == NULL) { 41 if (feof(stdin)) 42 die(); 43 clearerr(stdin); 44 continue; 45 } 46 while (isspace((unsigned char)*buf)) 47 buf++; 48 if (*buf) 49 break; 50 if (error) 51 puts(error); 52 } 53 /* If we didn't get to the end of line, don't read it in next time. */ 54 if (buf[strlen(buf) - 1] != '\n') { 55 int i; 56 while ((i = getchar()) != '\n' && i != EOF) 57 continue; 58 } 59 return (buf); 60 } 61 62 63 /* 64 * shifts to UPPERCASE if flag > 0, lowercase if flag < 0, 65 * and leaves it unchanged if flag = 0 66 */ 67 char * 68 getword(char *buf1, char *buf2, int flag) 69 { 70 int cnt; 71 72 cnt = 1; 73 while (isspace((unsigned char)*buf1)) 74 buf1++; 75 if (*buf1 != ',') { 76 if (!*buf1) { 77 *buf2 = 0; 78 return (0); 79 } 80 while (cnt < WORDLEN && *buf1 && 81 !isspace((unsigned char)*buf1) && *buf1 != ',') 82 if (flag < 0) { 83 if (isupper((unsigned char)*buf1)) { 84 *buf2++ = 85 tolower((unsigned char)*buf1++); 86 cnt++; 87 } else { 88 *buf2++ = *buf1++; 89 cnt++; 90 } 91 } else if (flag > 0) { 92 if (islower((unsigned char)*buf1)) { 93 *buf2++ = 94 toupper((unsigned char)*buf1++); 95 cnt++; 96 } else { 97 *buf2++ = *buf1++; 98 cnt++; 99 } 100 } else { 101 *buf2++ = *buf1++; 102 cnt++; 103 } 104 if (cnt == WORDLEN) 105 while (*buf1 && !isspace((unsigned char)*buf1)) 106 buf1++; 107 } else 108 *buf2++ = *buf1++; 109 *buf2 = '\0'; 110 while (isspace((unsigned char)*buf1)) 111 buf1++; 112 return (*buf1 ? buf1 : NULL); 113 } 114