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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