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1 /* |
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2 * matiec - a compiler for the programming languages defined in IEC 61131-3 |
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3 * |
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4 * Copyright (C) 2011 Mario de Sousa (msousa@fe.up.pt) |
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5 * |
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6 * This program is free software: you can redistribute it and/or modify |
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7 * it under the terms of the GNU General Public License as published by |
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8 * the Free Software Foundation, either version 3 of the License, or |
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9 * (at your option) any later version. |
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10 * |
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11 * This program is distributed in the hope that it will be useful, |
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 * GNU General Public License for more details. |
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15 * |
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16 * You should have received a copy of the GNU General Public License |
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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18 * |
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19 * |
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20 * This code is made available on the understanding that it will not be |
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21 * used in safety-critical situations without a full and competent review. |
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22 */ |
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23 |
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24 |
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25 /*******************************************/ |
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26 /* String Duplication Utility Functions... */ |
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27 /*******************************************/ |
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28 |
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29 |
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30 |
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31 #ifndef STRDUP__H |
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32 #define STRDUP__H |
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33 |
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34 #include <stdlib.h> /* required for malloc() */ |
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35 #include <string.h> /* required for strcat() & strlen() */ |
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36 |
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37 /* |
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38 * Join two strings together. Allocate space with malloc(3). |
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39 */ |
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40 static char *strdup2(const char *a, const char *b) { |
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41 char *res = (char *)malloc(strlen(a) + strlen(b) + 1); |
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42 |
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43 if (res == NULL) return NULL; |
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44 return strcat(strcpy(res, a), b); |
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45 } |
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46 |
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47 /* |
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48 * Join three strings together. Allocate space with malloc(3). |
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49 */ |
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50 static char *strdup3(const char *a, const char *b, const char *c) { |
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51 char *res = (char *)malloc(strlen(a) + strlen(b) + strlen(c) + 1); |
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52 |
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53 if (res == NULL) return NULL; |
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54 return strcat(strcat(strcpy(res, a), b), c); |
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55 } |
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56 |
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57 |
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58 #endif /* STRDUP__H */ |