1 /*

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

     3  *

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

     5  *

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

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

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

     9  *  (at your option) any later version.

    10  *

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

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

    13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    14  *  GNU General Public License for more details.

    15  *

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

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

    18  *

    19  *

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

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

    22  */

    23 

    24 

    25 /*******************************************/

    26 /* String Duplication Utility Functions... */

    27 /*******************************************/

    28 

    29 

    30 

    31 #ifndef STRDUP__H

    32 #define STRDUP__H

    33 

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

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

    36 

    37 /*

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

    39  */

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

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

    42 

    43   if (res == NULL) return NULL;

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

    45 }

    46 

    47 /*

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

    49  */

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

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

    52 

    53   if (res == NULL) return NULL;

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

    55 }

    56 

    57 

    58 #endif /* STRDUP__H */