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rework the history management It was a huge pile of spaghetti with useless utility functions and lots of code reaching into the "data structure" (if you can call it so) to do stuff. Instead, provide a "module" with a clean interface and noone reaching in the insides.
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 1 65c49665 2024-01-23 op /*

 2 65c49665 2024-01-23 op  * Copyright (c) 2021, 2024 Omar Polo <op@omarpolo.com>

 3 65c49665 2024-01-23 op  *

 4 65c49665 2024-01-23 op  * Permission to use, copy, modify, and distribute this software for any

 5 65c49665 2024-01-23 op  * purpose with or without fee is hereby granted, provided that the above

 6 65c49665 2024-01-23 op  * copyright notice and this permission notice appear in all copies.

 7 65c49665 2024-01-23 op  *

 8 65c49665 2024-01-23 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

 9 65c49665 2024-01-23 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

10 65c49665 2024-01-23 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

11 65c49665 2024-01-23 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

12 65c49665 2024-01-23 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

13 65c49665 2024-01-23 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

14 65c49665 2024-01-23 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

15 65c49665 2024-01-23 op  */

16 65c49665 2024-01-23 op 

17 65c49665 2024-01-23 op struct hist;

18 65c49665 2024-01-23 op 

19 65c49665 2024-01-23 op #define HIST_LINEAR	0x0

20 65c49665 2024-01-23 op #define HIST_WRAP	0x1

21 65c49665 2024-01-23 op 

22 65c49665 2024-01-23 op struct hist	*hist_new(int);

23 65c49665 2024-01-23 op void		 hist_free(struct hist *);

24 65c49665 2024-01-23 op void		 hist_erase(struct hist *);

25 65c49665 2024-01-23 op 

26 65c49665 2024-01-23 op size_t		 hist_size(struct hist *);

27 65c49665 2024-01-23 op size_t		 hist_off(struct hist *);

28 65c49665 2024-01-23 op 

29 65c49665 2024-01-23 op const char	*hist_cur(struct hist *);

30 65c49665 2024-01-23 op int		 hist_cur_offs(struct hist *, size_t *, size_t *);

31 65c49665 2024-01-23 op 

32 65c49665 2024-01-23 op int		 hist_set_cur(struct hist *, const char *);

33 65c49665 2024-01-23 op int		 hist_set_offs(struct hist *, size_t, size_t);

34 65c49665 2024-01-23 op 

35 65c49665 2024-01-23 op const char	*hist_nth(struct hist *, size_t);

36 65c49665 2024-01-23 op const char	*hist_prev(struct hist *);

37 65c49665 2024-01-23 op const char	*hist_next(struct hist *);

38 65c49665 2024-01-23 op 

39 65c49665 2024-01-23 op void		 hist_seek_start(struct hist *);

40 65c49665 2024-01-23 op 

41 65c49665 2024-01-23 op int		 hist_push(struct hist *, const char *);

42 65c49665 2024-01-23 op int		 hist_prepend(struct hist *, const char *);

43 65c49665 2024-01-23 op int		 hist_append(struct hist *, const char *);

44 65c49665 2024-01-23 op