| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Utility routines.
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| 4 | *
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| 5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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| 6 | *
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| 7 | * This program is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * This program is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 15 | * General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 20 | */
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| 21 |
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| 22 | #include <stdlib.h>
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| 23 | #include <errno.h>
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| 24 | #include <assert.h>
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| 25 | #include "libbb.h"
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| 26 |
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| 27 | #ifdef L_safe_strtoi
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| 28 | int safe_strtoi(char *arg, int* value)
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| 29 | {
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| 30 | int error;
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| 31 | long lvalue = *value;
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| 32 | error = safe_strtol(arg, &lvalue);
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| 33 | *value = (int) lvalue;
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| 34 | return error;
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| 35 | }
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| 36 | #endif
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| 37 |
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| 38 | #ifdef L_safe_strtod
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| 39 | int safe_strtod(char *arg, double* value)
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| 40 | {
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| 41 | char *endptr;
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| 42 | int errno_save = errno;
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| 43 |
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| 44 | assert(arg!=NULL);
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| 45 | errno = 0;
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| 46 | *value = strtod(arg, &endptr);
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| 47 | if (errno != 0 || *endptr!='\0' || endptr==arg) {
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| 48 | return 1;
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| 49 | }
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| 50 | errno = errno_save;
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| 51 | return 0;
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| 52 | }
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| 53 | #endif
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| 54 |
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| 55 | #ifdef L_safe_strtol
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| 56 | int safe_strtol(char *arg, long* value)
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| 57 | {
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| 58 | char *endptr;
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| 59 | int errno_save = errno;
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| 60 |
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| 61 | assert(arg!=NULL);
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| 62 | errno = 0;
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| 63 | *value = strtol(arg, &endptr, 0);
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| 64 | if (errno != 0 || *endptr!='\0' || endptr==arg) {
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| 65 | return 1;
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| 66 | }
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| 67 | errno = errno_save;
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| 68 | return 0;
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| 69 | }
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| 70 | #endif
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| 71 |
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| 72 | #ifdef L_safe_strtoul
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| 73 | int safe_strtoul(char *arg, unsigned long* value)
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| 74 | {
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| 75 | char *endptr;
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| 76 | int errno_save = errno;
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| 77 |
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| 78 | assert(arg!=NULL);
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| 79 | errno = 0;
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| 80 | *value = strtoul(arg, &endptr, 0);
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| 81 | if (errno != 0 || *endptr!='\0' || endptr==arg) {
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| 82 | return 1;
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| 83 | }
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| 84 | errno = errno_save;
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| 85 | return 0;
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| 86 | }
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| 87 | #endif
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| 88 |
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