--- /dev/null
+/*
+ * An implementation of expandable c strings in heap memory.
+ * Copyright (C) 2014 Michael Goehler
+ *
+ * This file is part of mdp.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <string.h> // strlen
+#include <stdlib.h> // malloc, realloc
+
+#include "cstring.h"
+
+cstring_t *cstring_init() {
+ cstring_t *x = malloc(sizeof(cstring_t));
+ x->text = (void*)0;
+ x->size = x->alloc = 0;
+ x->expand = cstring_expand;
+ x->expand_arr = cstring_expand_arr;
+ x->reset = cstring_reset;
+ x->delete = cstring_delete;
+ return x;
+}
+
+void cstring_expand(cstring_t *self, char x) {
+ if(self->size + sizeof(x) + sizeof(char) > self->alloc) {
+ self->alloc += (REALLOC_ADD * sizeof(char));
+ self->text = realloc(self->text, self->alloc);
+ }
+ self->text[self->size] = x;
+ self->text[self->size+1] = '\0';
+ self->size = strlen(self->text);
+}
+
+void cstring_expand_arr(cstring_t *self, char *x) {
+ if(self->size + strlen(x) + sizeof(char) > self->alloc) {
+ self->alloc = ((strlen(x) + self->size + 1) * sizeof(char));
+ self->text = realloc(self->text, self->alloc);
+ }
+ self->text = strcat(self->text, x);
+ self->size = strlen(self->text);
+ self->text[self->size+1] = '\0';
+}
+
+void cstring_reset(cstring_t *self) {
+ free(self->text);
+ self->text = (void*)0;
+ self->size = self->alloc = 0;
+}
+
+void cstring_delete(cstring_t *self) {
+ free(self->text);
+ free(self);
+}
+
