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#if !defined( CSTRING_H )
#define CSTRING_H
/*
* An implementation of expandable c strings in heap memory.
* Copyright (C) 2015 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 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:
* cstring_t *p = cstring_init();
* (p->expand)(p, 'X');
* (p->delete)(p);
*
*/
// The amount of memory allocated from heap when string expansion hits the
// allocated memory limit
#define REALLOC_ADD 10
typedef struct _cstring_t {
wchar_t *value;
size_t size;
size_t alloc;
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;
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);
#endif // !defined( CSTRING_H )
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