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From:
Stefan Sperling <stsp@stsp.name>
Subject:
Re: tog: add search_setup fp for consistency
To:
Mark Jamsek <mark@jamsek.com>
Cc:
Game of Trees <gameoftrees@openbsd.org>
Date:
Sat, 17 Sep 2022 00:38:41 +0200

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On Sat, Sep 17, 2022 at 01:37:03AM +1000, Mark Jamsek wrote:
> As per stsp's suggestion, refactor the previous search setup switch
> routine into tog_view function pointers.
> 
> While here, I've added declarations for the new help view methods
> (e.g., {close,input,open,reset,show}_help_view) for consistency too.

Nice, ok stsp

> -----------------------------------------------
> commit cb28de825895f109971cd595bba0afd3963b723f
> from: Mark Jamsek <mark@jamsek.dev>
> date: Fri Sep 16 15:31:21 2022 UTC
>  
>  tog: refactor search setup into tog_view function pointers
>  
>  Suggested by stsp. While here, add declarations for new help view routines.
>  
> diff ec2a9698e29a1ee9152c8740cdce9603d84d224d cb28de825895f109971cd595bba0afd3963b723f
> commit - ec2a9698e29a1ee9152c8740cdce9603d84d224d
> commit + cb28de825895f109971cd595bba0afd3963b723f
> blob - b11f730773e3daa0c7f7d516291ac268215a3ecf
> blob + f0f8ee12b7aa441a0f5dd2a8e93888e7ba94ed3c
> --- tog/tog.c
> +++ tog/tog.c
> @@ -676,6 +676,8 @@ struct tog_view {
>  
>  	const struct got_error *(*search_start)(struct tog_view *);
>  	const struct got_error *(*search_next)(struct tog_view *);
> +	void (*search_setup)(struct tog_view *, FILE **, off_t **, size_t *,
> +	    int **, int **, int **, int **);
>  	int search_started;
>  	int searching;
>  #define TOG_SEARCH_FORWARD	1
> @@ -698,6 +700,8 @@ static const struct got_error *input_diff_view(struct 
>  static const struct got_error *reset_diff_view(struct tog_view *);
>  static const struct got_error* close_diff_view(struct tog_view *);
>  static const struct got_error *search_start_diff_view(struct tog_view *);
> +static void search_setup_diff_view(struct tog_view *, FILE **, off_t **,
> +    size_t *, int **, int **, int **, int **);
>  static const struct got_error *search_next_view_match(struct tog_view *);
>  
>  static const struct got_error *open_log_view(struct tog_view *,
> @@ -719,6 +723,8 @@ static const struct got_error *input_blame_view(struct
>  static const struct got_error *reset_blame_view(struct tog_view *);
>  static const struct got_error *close_blame_view(struct tog_view *);
>  static const struct got_error *search_start_blame_view(struct tog_view *);
> +static void search_setup_blame_view(struct tog_view *, FILE **, off_t **,
> +    size_t *, int **, int **, int **, int **);
>  
>  static const struct got_error *open_tree_view(struct tog_view *,
>      struct got_object_id *, const char *, struct got_repository *);
> @@ -738,6 +744,17 @@ static const struct got_error *close_ref_view(struct t
>  static const struct got_error *search_start_ref_view(struct tog_view *);
>  static const struct got_error *search_next_ref_view(struct tog_view *);
>  
> +static const struct got_error *open_help_view(struct tog_view *,
> +    struct tog_view *);
> +static const struct got_error *show_help_view(struct tog_view *);
> +static const struct got_error *input_help_view(struct tog_view **,
> +    struct tog_view *, int);
> +static const struct got_error *reset_help_view(struct tog_view *);
> +static const struct got_error* close_help_view(struct tog_view *);
> +static const struct got_error *search_start_help_view(struct tog_view *);
> +static void search_setup_help_view(struct tog_view *, FILE **, off_t **,
> +    size_t *, int **, int **, int **, int **);
> +
>  static volatile sig_atomic_t tog_sigwinch_received;
>  static volatile sig_atomic_t tog_sigpipe_received;
>  static volatile sig_atomic_t tog_sigcont_received;
> @@ -4770,56 +4787,18 @@ search_start_diff_view(struct tog_view *view)
>  	return NULL;
>  }
>  
> -static const struct got_error *
> -search_set_view(struct tog_view *view, FILE **f, off_t **line_offsets,
> +static void
> +search_setup_diff_view(struct tog_view *view, FILE **f, off_t **line_offsets,
>      size_t *nlines, int **first, int **last, int **match, int **selected)
>  {
> -	*f = NULL;
> -	*first = *last = *match = *selected = NULL;
> -	*line_offsets = NULL;
> +	struct tog_diff_view_state *s = &view->state.diff;
>  
> -	switch (view->type) {
> -	case (TOG_VIEW_DIFF): {
> -		struct tog_diff_view_state *s = &view->state.diff;
> -
> -		*f = s->f;
> -		*nlines = s->nlines;
> -		*match = &s->matched_line;
> -		*first = &s->first_displayed_line;
> -		*last = &s->last_displayed_line;
> -		*selected = &s->selected_line;
> -		break;
> -	}
> -	case (TOG_VIEW_BLAME): {
> -		struct tog_blame_view_state *s = &view->state.blame;
> -
> -		*f = s->blame.f;
> -		*nlines = s->blame.nlines;
> -		*line_offsets = s->blame.line_offsets;
> -		*match = &s->matched_line;
> -		*first = &s->first_displayed_line;
> -		*last = &s->last_displayed_line;
> -		*selected = &s->selected_line;
> -		break;
> -	}
> -	case (TOG_VIEW_HELP): {
> -		struct tog_help_view_state *s = &view->state.help;
> -
> -		*f = s->f;
> -		*nlines = s->nlines;
> -		*line_offsets = s->line_offsets;
> -		*match = &s->matched_line;
> -		*first = &s->first_displayed_line;
> -		*last = &s->last_displayed_line;
> -		*selected = &s->selected_line;
> -		break;
> -	}
> -	default:
> -		return got_error_msg(GOT_ERR_NOT_IMPL,
> -		    "view search not supported");
> -	}
> -
> -	return NULL;
> +	*f = s->f;
> +	*nlines = s->nlines;
> +	*match = &s->matched_line;
> +	*first = &s->first_displayed_line;
> +	*last = &s->last_displayed_line;
> +	*selected = &s->selected_line;
>  }
>  
>  static const struct got_error *
> @@ -4835,10 +4814,11 @@ search_next_view_match(struct tog_view *view)
>  	size_t nlines = 0;
>  	int *first, *last, *match, *selected;
>  
> -	err = search_set_view(view, &f, &line_offsets, &nlines, &first, &last,
> +	if (!view->search_setup)
> +		return got_error_msg(GOT_ERR_NOT_IMPL,
> +		    "view search not supported");
> +	view->search_setup(view, &f, &line_offsets, &nlines, &first, &last,
>  	    &match, &selected);
> -	if (err)
> -		return err;
>  
>  	if (!view->searching) {
>  		view->search_next_done = TOG_SEARCH_HAVE_MORE;
> @@ -5062,6 +5042,7 @@ open_diff_view(struct tog_view *view, struct got_objec
>  	view->reset = reset_diff_view;
>  	view->close = close_diff_view;
>  	view->search_start = search_start_diff_view;
> +	view->search_setup = search_setup_diff_view;
>  	view->search_next = search_next_view_match;
>  done:
>  	if (err)
> @@ -6105,6 +6086,7 @@ open_blame_view(struct tog_view *view, char *path,
>  	view->reset = reset_blame_view;
>  	view->close = close_blame_view;
>  	view->search_start = search_start_blame_view;
> +	view->search_setup = search_setup_blame_view;
>  	view->search_next = search_next_view_match;
>  
>  	return run_blame(view);
> @@ -6140,6 +6122,21 @@ search_start_blame_view(struct tog_view *view)
>  	return NULL;
>  }
>  
> +static void
> +search_setup_blame_view(struct tog_view *view, FILE **f, off_t **line_offsets,
> +    size_t *nlines, int **first, int **last, int **match, int **selected)
> +{
> +	struct tog_blame_view_state *s = &view->state.blame;
> +
> +	*f = s->blame.f;
> +	*nlines = s->blame.nlines;
> +	*line_offsets = s->blame.line_offsets;
> +	*match = &s->matched_line;
> +	*first = &s->first_displayed_line;
> +	*last = &s->last_displayed_line;
> +	*selected = &s->selected_line;
> +}
> +
>  static const struct got_error *
>  show_blame_view(struct tog_view *view)
>  {
> @@ -8608,6 +8605,21 @@ search_start_help_view(struct tog_view *view)
>  	return NULL;
>  }
>  
> +static void
> +search_setup_help_view(struct tog_view *view, FILE **f, off_t **line_offsets,
> +    size_t *nlines, int **first, int **last, int **match, int **selected)
> +{
> +	struct tog_help_view_state *s = &view->state.help;
> +
> +	*f = s->f;
> +	*nlines = s->nlines;
> +	*line_offsets = s->line_offsets;
> +	*match = &s->matched_line;
> +	*first = &s->first_displayed_line;
> +	*last = &s->last_displayed_line;
> +	*selected = &s->selected_line;
> +}
> +
>  static const struct got_error *
>  show_help_view(struct tog_view *view)
>  {
> @@ -8904,6 +8916,7 @@ open_help_view(struct tog_view *view, struct tog_view 
>  	view->reset = reset_help_view;
>  	view->close = close_help_view;
>  	view->search_start = search_start_help_view;
> +	view->search_setup = search_setup_help_view;
>  	view->search_next = search_next_view_match;
>  
>  	err = create_help(s);
> 
> 
> -- 
> Mark Jamsek <fnc.bsdbox.org>
> GPG: F2FF 13DE 6A06 C471 CA80  E6E2 2930 DC66 86EE CF68