1 /* $NetBSD: getpar.c,v 1.9 2002/02/26 02:37:28 wiz Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)getpar.c 8.1 (Berkeley) 5/31/93"; 40 #else 41 __RCSID("$NetBSD: getpar.c,v 1.9 2002/02/26 02:37:28 wiz Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include "getpar.h" 49 #include "trek.h" 50 51 static int testterm __P((void)); 52 53 /** 54 ** get integer parameter 55 **/ 56 57 int 58 getintpar(s) 59 const char *s; 60 { 61 int i; 62 int n; 63 64 while (1) 65 { 66 if (testnl() && s) 67 printf("%s: ", s); 68 i = scanf("%d", &n); 69 if (i < 0) 70 exit(1); 71 if (i > 0 && testterm()) 72 return (n); 73 printf("invalid input; please enter an integer\n"); 74 skiptonl(0); 75 } 76 } 77 78 /** 79 ** get floating parameter 80 **/ 81 82 double getfltpar(s) 83 const char *s; 84 { 85 int i; 86 double d; 87 88 while (1) 89 { 90 if (testnl() && s) 91 printf("%s: ", s); 92 i = scanf("%lf", &d); 93 if (i < 0) 94 exit(1); 95 if (i > 0 && testterm()) 96 return (d); 97 printf("invalid input; please enter a double\n"); 98 skiptonl(0); 99 } 100 } 101 102 /** 103 ** get yes/no parameter 104 **/ 105 106 const struct cvntab Yntab[] = 107 { 108 { "y", "es", (cmdfun)1, 1 }, 109 { "n", "o", (cmdfun)0, 0 }, 110 { NULL, NULL, NULL, 0 } 111 }; 112 113 int 114 getynpar(s) 115 const char *s; 116 { 117 const struct cvntab *r; 118 119 r = getcodpar(s, Yntab); 120 return r->value2; 121 } 122 123 124 /** 125 ** get coded parameter 126 **/ 127 128 const struct cvntab *getcodpar(s, tab) 129 const char *s; 130 const struct cvntab tab[]; 131 { 132 char input[100]; 133 const struct cvntab *r; 134 int flag; 135 const char *p, *q; 136 int c; 137 int f; 138 139 flag = 0; 140 while (1) 141 { 142 flag |= (f = testnl()); 143 if (flag) 144 printf("%s: ", s); 145 if (f) 146 cgetc(0); /* throw out the newline */ 147 scanf("%*[ \t;]"); 148 if ((c = scanf("%[^ \t;\n]", input)) < 0) 149 exit(1); 150 if (c == 0) 151 continue; 152 flag = 1; 153 154 /* if command list, print four per line */ 155 if (input[0] == '?' && input[1] == 0) 156 { 157 c = 4; 158 for (r = tab; r->abrev; r++) 159 { 160 strcpy(input, r->abrev); 161 strcat(input, r->full); 162 printf("%14.14s", input); 163 if (--c > 0) 164 continue; 165 c = 4; 166 printf("\n"); 167 } 168 if (c != 4) 169 printf("\n"); 170 continue; 171 } 172 173 /* search for in table */ 174 for (r = tab; r->abrev; r++) 175 { 176 p = input; 177 for (q = r->abrev; *q; q++) 178 if (*p++ != *q) 179 break; 180 if (!*q) 181 { 182 for (q = r->full; *p && *q; q++, p++) 183 if (*p != *q) 184 break; 185 if (!*p || !*q) 186 break; 187 } 188 } 189 190 /* check for not found */ 191 if (!r->abrev) 192 { 193 printf("invalid input; ? for valid inputs\n"); 194 skiptonl(0); 195 } 196 else 197 return (r); 198 } 199 } 200 201 202 /** 203 ** get string parameter 204 **/ 205 206 void 207 getstrpar(s, r, l, t) 208 const char *s; 209 char *r; 210 int l; 211 const char *t; 212 { 213 int i; 214 char format[20]; 215 int f; 216 217 if (t == 0) 218 t = " \t\n;"; 219 (void)sprintf(format, "%%%d[^%s]", l, t); 220 while (1) 221 { 222 if ((f = testnl()) && s) 223 printf("%s: ", s); 224 if (f) 225 cgetc(0); 226 scanf("%*[\t ;]"); 227 i = scanf(format, r); 228 if (i < 0) 229 exit(1); 230 if (i != 0) 231 return; 232 } 233 } 234 235 236 /** 237 ** test if newline is next valid character 238 **/ 239 240 int 241 testnl() 242 { 243 char c; 244 245 while ((c = cgetc(0)) != '\n') 246 if ((c >= '0' && c <= '9') || c == '.' || c == '!' || 247 (c >= 'A' && c <= 'Z') || 248 (c >= 'a' && c <= 'z') || c == '-') 249 { 250 ungetc(c, stdin); 251 return(0); 252 } 253 ungetc(c, stdin); 254 return (1); 255 } 256 257 258 /** 259 ** scan for newline 260 **/ 261 262 void 263 skiptonl(c) 264 int c; 265 { 266 while (c != '\n') 267 if (!(c = cgetc(0))) 268 return; 269 ungetc('\n', stdin); 270 return; 271 } 272 273 274 /** 275 ** test for valid terminator 276 **/ 277 278 static int 279 testterm() 280 { 281 char c; 282 283 if (!(c = cgetc(0))) 284 return (1); 285 if (c == '.') 286 return (0); 287 if (c == '\n' || c == ';') 288 ungetc(c, stdin); 289 return (1); 290 } 291 292 293 /* 294 ** TEST FOR SPECIFIED DELIMITER 295 ** 296 ** The standard input is scanned for the parameter. If found, 297 ** it is thrown away and non-zero is returned. If not found, 298 ** zero is returned. 299 */ 300 301 int 302 readdelim(d) 303 char d; 304 { 305 char c; 306 307 while ((c = cgetc(0)) != '\0') 308 { 309 if (c == d) 310 return (1); 311 if (c == ' ') 312 continue; 313 ungetc(c, stdin); 314 break; 315 } 316 return (0); 317 } 318