#define CSTRING_H
/*
- * A implementation of expandable c strings in heap memory.
+ * 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/>.
+ *
*
* struct: cstring_t which defines a expandable c string type in heap memory
*
* function: cstring_init to intialize struct of type cstring_t
- * function: cstring_t->expand to add one character to the string
+ * function: cstring_t->expand to add one character to the struct
+ * function: cstring_t->expand_arr to add a string to the struct
+ * function: cstring_t->strip to remove a substring
+ * function: cstring_t->reset to clear and reuse the struct
* function: cstring_t->delete to free the allocated memory
*
* Example:
*
*/
-#include <string.h> // strlen
-#include <stdlib.h> // malloc, realloc
-
// The amount of memory allocated from heap when string expansion hits the
// allocated memory limit
#define REALLOC_ADD 10
typedef struct _cstring_t {
- char *text;
+ wchar_t *text;
size_t size;
size_t alloc;
- void (*expand)(struct _cstring_t *self, char x);
- void (*expand_arr)(struct _cstring_t *self, char *x);
+ void (*expand)(struct _cstring_t *self, wchar_t x);
+ void (*expand_arr)(struct _cstring_t *self, wchar_t *x);
+ void (*strip)(struct _cstring_t *self, int pos, int len);
+ void (*reset)(struct _cstring_t *self);
void (*delete)(struct _cstring_t *self);
} cstring_t;
-void cstring_expand(cstring_t *self, char x);
-void cstring_expand_arr(cstring_t *self, char *x);
+cstring_t *cstring_init();
+void cstring_expand(cstring_t *self, wchar_t x);
+void cstring_expand_arr(cstring_t *self, wchar_t *x);
+void cstring_strip(cstring_t *self, int pos, int len);
+void cstring_reset(cstring_t *self);
void cstring_delete(cstring_t *self);
-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->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 += (REALLOC_ADD * sizeof(char));
- self->text = realloc(self->text, self->alloc);
- }
- self->text = strcat(self->text, x);
- self->size = strlen(self->text);
-}
-
-
-void cstring_delete(cstring_t *self) {
- free(self->text);
- free(self);
-}
-
#endif // !defined( CSTRING_H )
