75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/* Copyright (C) 2022 June McEnroe <june@causal.agency>
|
|
*
|
|
* 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 <https://www.gnu.org/licenses/>.
|
|
*
|
|
* Additional permission under GNU GPL version 3 section 7:
|
|
*
|
|
* If you modify this Program, or any covered work, by linking or
|
|
* combining it with OpenSSL (or a modified version of that library),
|
|
* containing parts covered by the terms of the OpenSSL License and the
|
|
* original SSLeay license, the licensors of this Program grant you
|
|
* additional permission to convey the resulting work. Corresponding
|
|
* Source for a non-source form of such a combination shall include the
|
|
* source code for the parts of OpenSSL used as well as that of the
|
|
* covered work.
|
|
*/
|
|
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
|
|
struct Edit {
|
|
wchar_t *buf;
|
|
size_t pos;
|
|
size_t len;
|
|
size_t cap;
|
|
struct Edit *cut;
|
|
};
|
|
|
|
enum EditFn {
|
|
EditHead,
|
|
EditTail,
|
|
EditPrev,
|
|
EditNext,
|
|
EditPrevWord,
|
|
EditNextWord,
|
|
EditDeleteHead,
|
|
EditDeleteTail,
|
|
EditDeletePrev,
|
|
EditDeleteNext,
|
|
EditDeletePrevWord,
|
|
EditDeleteNextWord,
|
|
EditPaste,
|
|
EditTranspose,
|
|
EditCollapse,
|
|
EditClear,
|
|
};
|
|
|
|
// Perform an editing function.
|
|
int editFn(struct Edit *e, enum EditFn fn);
|
|
|
|
// Insert a character at the cursor.
|
|
int editInsert(struct Edit *e, wchar_t ch);
|
|
|
|
// Convert the buffer to a multi-byte string.
|
|
char *editString(const struct Edit *e, char **buf, size_t *cap, size_t *pos);
|
|
|
|
// Reserve a range in the buffer.
|
|
int editReserve(struct Edit *e, size_t index, size_t count);
|
|
|
|
// Copy a range of the buffer into e->cut.
|
|
int editCopy(struct Edit *e, size_t index, size_t count);
|
|
|
|
// Delete a range from the buffer. If cut is true, copy the deleted portion.
|
|
int editDelete(struct Edit *e, bool cut, size_t index, size_t count);
|