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136
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1 /*
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2 util.c
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3 Copyright © 2009 William Astle
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4
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5 This file is part of LWLINK.
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6
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7 LWLINK is free software: you can redistribute it and/or modify it under the
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8 terms of the GNU General Public License as published by the Free Software
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9 Foundation, either version 3 of the License, or (at your option) any later
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10 version.
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11
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12 This program is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 more details.
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16
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17 You should have received a copy of the GNU General Public License along with
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18 this program. If not, see <http://www.gnu.org/licenses/>.
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19 */
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20
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21 /*
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22 Utility functions
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23 */
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24
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25 #define __util_c_seen__
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26
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27 #include <malloc.h>
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28 #include <stdio.h>
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29 #include <stdlib.h>
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30 #include <string.h>
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31
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32 #include "util.h"
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33
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34 void *lw_malloc(int size)
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35 {
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36 void *ptr;
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37
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38 ptr = malloc(size);
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39 if (!ptr)
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40 {
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41 // bail out; memory allocation error
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42 fprintf(stderr, "lw_malloc(): Memory allocation error\n");
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43 exit(1);
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44 }
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45 return ptr;
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46 }
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47
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48 void *lw_realloc(void *optr, int size)
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49 {
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50 void *ptr;
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51
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52 if (size == 0)
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53 {
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54 lw_free(optr);
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55 return;
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56 }
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57
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58 ptr = realloc(optr, size);
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59 if (!ptr)
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60 {
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61 fprintf(stderr, "lw_realloc(): memory allocation error\n");
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62 exit(1);
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63 }
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64 }
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65
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66 void lw_free(void *ptr)
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67 {
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68 if (ptr)
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69 free(ptr);
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70 }
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71
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72 char *lw_strdup(const char *s)
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73 {
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74 char *d;
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75
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76 if (!s)
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77 return NULL;
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78
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79 d = strdup(s);
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80 if (!d)
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81 {
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82 fprintf(stderr, "lw_strdup(): memory allocation error\n");
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83 exit(1);
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84 }
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85
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86 return d;
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87 }
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