util/strdup.hh
author Mario de Sousa <msousa@fe.up.pt>
Fri, 20 Apr 2018 17:38:09 +0100
changeset 1071 7fd69f29320a
parent 351 e7d236750709
permissions -rw-r--r--
fix backup/restore functions: now also backup/restore programs instantiated to run inside tasks.
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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 */