50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/*
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* This file is part of uIRCd. (https://git.redxen.eu/caskd/uIRCd)
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* Copyright (c) 2019, 2020 Alex-David Denes
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*
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* uIRCd 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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* any later version.
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*
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* uIRCd 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 uIRCd. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "memory.h"
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#include "logging.h"
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#include <stdbool.h> // bool
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#include <stdio.h> // fprintf()
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#include <stdlib.h> // malloc() free()
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#include <string.h> // strcpy()
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/* Description:
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* This is a allocation manager that frees or allocates variables to pointers depending on the context.
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* If the pointer is already allocated it will free it and replace it with var
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* If var is NULL then the pointer is assigned NULL and left "undefined"
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* If it isn't NULL, the string var is copied to a allocated block stored in *ptr
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* NOTE: This could be expanded to have uses outside of strings but that's not required (yet)
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*/
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int
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allocate_copy(char** ptr, const char* const var)
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{
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if (var == NULL) LOG(LOG_DEBUG, "%s.", "Freeing pointer because provided variable has the address of NULL");
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if (*ptr != NULL) LOG(LOG_DEBUG, "%s.", "Deallocating already allocated pointer for replacement");
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free(*ptr);
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*ptr = NULL;
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if (var == NULL) return 1;
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if ((*ptr = (char*) malloc(sizeof(char) * (strlen(var) + 1))) != NULL) {
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strcpy(*ptr, var);
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return 1;
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}
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return 0;
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}
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