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/*

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 *  matiec - a compiler for the programming languages defined in IEC 61131-3

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 *

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 *  Copyright (C) 2011  Mario de Sousa (msousa@fe.up.pt)

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 *

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 *  This program is free software: you can redistribute it and/or modify

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 *  it under the terms of the GNU General Public License as published by

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 *  the Free Software Foundation, either version 3 of the License, or

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 *  (at your option) any later version.

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 *

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 *  This program is distributed in the hope that it will be useful,

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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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 *  GNU General Public License for more details.

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 *

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 *  You should have received a copy of the GNU General Public License

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 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.

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 *

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 *

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 * This code is made available on the understanding that it will not be

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 * used in safety-critical situations without a full and competent review.

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 */

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/*******************************************/

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/* String Duplication Utility Functions... */

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/*******************************************/

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#ifndef STRDUP__H

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#define STRDUP__H

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#include <stdlib.h>   /* required for malloc() */

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#include <string.h>   /* required for strcat() & strlen() */

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/*

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 * Join two strings together. Allocate space with malloc(3).

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 */

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static char *strdup2(const char *a, const char *b) {

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  char *res = (char *)malloc(strlen(a) + strlen(b) + 1);

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  if (res == NULL) return NULL;

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  return strcat(strcpy(res, a), b);

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}

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/*

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 * Join three strings together. Allocate space with malloc(3).

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 */

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static char *strdup3(const char *a, const char *b, const char *c) {

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  char *res = (char *)malloc(strlen(a) + strlen(b) + strlen(c) + 1);

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  if (res == NULL) return NULL;

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  return strcat(strcat(strcpy(res, a), b), c);

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}

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#endif /* STRDUP__H */