| 1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms are permitted |
| 6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, |
| 8 | * advertising materials, and other materials related to such |
| 9 | * distribution and use acknowledge that the software was developed |
| 10 | * by the University of California, Berkeley. The name of the |
| 11 | * University may not be used to endorse or promote products derived |
| 12 | * from this software without specific prior written permission. |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef lint |
| 19 | static char sccsid[] = "@(#)getpar.c 4.7 (Berkeley) %G%"; |
| 20 | #endif /* not lint */ |
| 21 | |
| 22 | # include <stdio.h> |
| 23 | # include "getpar.h" |
| 24 | |
| 25 | /** |
| 26 | ** get integer parameter |
| 27 | **/ |
| 28 | |
| 29 | getintpar(s) |
| 30 | char *s; |
| 31 | { |
| 32 | register int i; |
| 33 | int n; |
| 34 | |
| 35 | while (1) |
| 36 | { |
| 37 | if (testnl() && s) |
| 38 | printf("%s: ", s); |
| 39 | i = scanf("%d", &n); |
| 40 | if (i < 0) |
| 41 | exit(1); |
| 42 | if (i > 0 && testterm()) |
| 43 | return (n); |
| 44 | printf("invalid input; please enter an integer\n"); |
| 45 | skiptonl(0); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | ** get floating parameter |
| 51 | **/ |
| 52 | |
| 53 | double getfltpar(s) |
| 54 | char *s; |
| 55 | { |
| 56 | register int i; |
| 57 | double d; |
| 58 | |
| 59 | while (1) |
| 60 | { |
| 61 | if (testnl() && s) |
| 62 | printf("%s: ", s); |
| 63 | i = scanf("%lf", &d); |
| 64 | if (i < 0) |
| 65 | exit(1); |
| 66 | if (i > 0 && testterm()) |
| 67 | return (d); |
| 68 | printf("invalid input; please enter a double\n"); |
| 69 | skiptonl(0); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | ** get yes/no parameter |
| 75 | **/ |
| 76 | |
| 77 | struct cvntab Yntab[] = |
| 78 | { |
| 79 | "y", "es", (int (*)())1, 0, |
| 80 | "n", "o", (int (*)())0, 0, |
| 81 | 0 |
| 82 | }; |
| 83 | |
| 84 | getynpar(s) |
| 85 | char *s; |
| 86 | { |
| 87 | struct cvntab *r; |
| 88 | |
| 89 | r = getcodpar(s, Yntab); |
| 90 | return ((int) r->value); |
| 91 | } |
| 92 | |
| 93 | |
| 94 | /** |
| 95 | ** get coded parameter |
| 96 | **/ |
| 97 | |
| 98 | struct cvntab *getcodpar(s, tab) |
| 99 | char *s; |
| 100 | struct cvntab tab[]; |
| 101 | { |
| 102 | char input[100]; |
| 103 | register struct cvntab *r; |
| 104 | int flag; |
| 105 | register char *p, *q; |
| 106 | int c; |
| 107 | int f; |
| 108 | |
| 109 | flag = 0; |
| 110 | while (1) |
| 111 | { |
| 112 | flag |= (f = testnl()); |
| 113 | if (flag) |
| 114 | printf("%s: ", s); |
| 115 | if (f) |
| 116 | cgetc(0); /* throw out the newline */ |
| 117 | scanf("%*[ \t;]"); |
| 118 | if ((c = scanf("%[^ \t;\n]", input)) < 0) |
| 119 | exit(1); |
| 120 | if (c == 0) |
| 121 | continue; |
| 122 | flag = 1; |
| 123 | |
| 124 | /* if command list, print four per line */ |
| 125 | if (input[0] == '?' && input[1] == 0) |
| 126 | { |
| 127 | c = 4; |
| 128 | for (r = tab; r->abrev; r++) |
| 129 | { |
| 130 | concat(r->abrev, r->full, input); |
| 131 | printf("%14.14s", input); |
| 132 | if (--c > 0) |
| 133 | continue; |
| 134 | c = 4; |
| 135 | printf("\n"); |
| 136 | } |
| 137 | if (c != 4) |
| 138 | printf("\n"); |
| 139 | continue; |
| 140 | } |
| 141 | |
| 142 | /* search for in table */ |
| 143 | for (r = tab; r->abrev; r++) |
| 144 | { |
| 145 | p = input; |
| 146 | for (q = r->abrev; *q; q++) |
| 147 | if (*p++ != *q) |
| 148 | break; |
| 149 | if (!*q) |
| 150 | { |
| 151 | for (q = r->full; *p && *q; q++, p++) |
| 152 | if (*p != *q) |
| 153 | break; |
| 154 | if (!*p || !*q) |
| 155 | break; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | /* check for not found */ |
| 160 | if (!r->abrev) |
| 161 | { |
| 162 | printf("invalid input; ? for valid inputs\n"); |
| 163 | skiptonl(0); |
| 164 | } |
| 165 | else |
| 166 | return (r); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | |
| 171 | /** |
| 172 | ** get string parameter |
| 173 | **/ |
| 174 | |
| 175 | getstrpar(s, r, l, t) |
| 176 | char *s; |
| 177 | char *r; |
| 178 | int l; |
| 179 | char *t; |
| 180 | { |
| 181 | register int i; |
| 182 | char format[20]; |
| 183 | register int f; |
| 184 | |
| 185 | if (t == 0) |
| 186 | t = " \t\n;"; |
| 187 | (void)sprintf(format, "%%%d[^%s]", l, t); |
| 188 | while (1) |
| 189 | { |
| 190 | if ((f = testnl()) && s) |
| 191 | printf("%s: ", s); |
| 192 | if (f) |
| 193 | cgetc(0); |
| 194 | scanf("%*[\t ;]"); |
| 195 | i = scanf(format, r); |
| 196 | if (i < 0) |
| 197 | exit(1); |
| 198 | if (i != 0) |
| 199 | return; |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | |
| 204 | /** |
| 205 | ** test if newline is next valid character |
| 206 | **/ |
| 207 | |
| 208 | testnl() |
| 209 | { |
| 210 | register char c; |
| 211 | |
| 212 | while ((c = cgetc(0)) != '\n') |
| 213 | if ((c >= '0' && c <= '9') || c == '.' || c == '!' || |
| 214 | (c >= 'A' && c <= 'Z') || |
| 215 | (c >= 'a' && c <= 'z') || c == '-') |
| 216 | { |
| 217 | ungetc(c, stdin); |
| 218 | return(0); |
| 219 | } |
| 220 | ungetc(c, stdin); |
| 221 | return (1); |
| 222 | } |
| 223 | |
| 224 | |
| 225 | /** |
| 226 | ** scan for newline |
| 227 | **/ |
| 228 | |
| 229 | skiptonl(c) |
| 230 | char c; |
| 231 | { |
| 232 | while (c != '\n') |
| 233 | if (!(c = cgetc(0))) |
| 234 | return; |
| 235 | ungetc('\n', stdin); |
| 236 | return; |
| 237 | } |
| 238 | |
| 239 | |
| 240 | /** |
| 241 | ** test for valid terminator |
| 242 | **/ |
| 243 | |
| 244 | testterm() |
| 245 | { |
| 246 | register char c; |
| 247 | |
| 248 | if (!(c = cgetc(0))) |
| 249 | return (1); |
| 250 | if (c == '.') |
| 251 | return (0); |
| 252 | if (c == '\n' || c == ';') |
| 253 | ungetc(c, stdin); |
| 254 | return (1); |
| 255 | } |
| 256 | |
| 257 | |
| 258 | /* |
| 259 | ** TEST FOR SPECIFIED DELIMETER |
| 260 | ** |
| 261 | ** The standard input is scanned for the parameter. If found, |
| 262 | ** it is thrown away and non-zero is returned. If not found, |
| 263 | ** zero is returned. |
| 264 | */ |
| 265 | |
| 266 | readdelim(d) |
| 267 | char d; |
| 268 | { |
| 269 | register char c; |
| 270 | |
| 271 | while (c = cgetc(0)) |
| 272 | { |
| 273 | if (c == d) |
| 274 | return (1); |
| 275 | if (c == ' ') |
| 276 | continue; |
| 277 | ungetc(c, stdin); |
| 278 | break; |
| 279 | } |
| 280 | return (0); |
| 281 | } |