~nloomans/ft_select

ref: 9783305a370e42cdcc43c542a2172cc8b95e8b9b ft_select/src/derive.c -rw-r--r-- 2.7 KiB
9783305aNoah Loomans confirm selection by pressing return 1 year, 10 months ago
                                                                                
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
#include <libft.h>
# include <ft_printf.h>
#include "derive.h"

static size_t	max(size_t a, size_t b)
{
	return (a > b ? a : b);
}

t_error			derive_dimensions(
					struct s_derived_dimensions *dimensions,
					struct s_state_terminal terminal,
					t_list2 options)
{
	if (DERIVE_PADDING_TOP + DERIVE_PADDING_BOTTOM + 1 > terminal.rows)
		return (errorf("not enough height to display options"));
	dimensions->rows =
		terminal.rows - DERIVE_PADDING_TOP - DERIVE_PADDING_BOTTOM;
	dimensions->columns =
		(options.len / dimensions->rows) +
		((options.len % dimensions->rows) ? 1 : 0);
	return (ERROR_NULL);
}

t_error			derive_column_width(
					size_t **res,
					struct s_derived_dimensions dimensions,
					t_list2 options)
{
	size_t			row_index;
	size_t			column_index;
	t_list2_item	*curr_option;

	*res = ft_memalloc(dimensions.columns * sizeof(**res));
	if (*res == NULL)
		return errorf("unable to malloc column width array");
	curr_option = options.first;
	column_index = 0;
	while (column_index < dimensions.columns)
	{
		row_index = 0;
		while (row_index < dimensions.rows && curr_option != NULL)
		{
			(*res)[column_index] = max(
				ft_strlen(
					((struct s_state_option *)curr_option->content)->name),
				(*res)[column_index]);
			curr_option = curr_option->next;
			row_index++;
		}
		column_index++;
	}
	return (ERROR_NULL);
}

static t_error	malloc_rows(
					struct s_state_option ****res,
					struct s_derived_dimensions dimensions)
{
	size_t			row_index;

	*res = ft_memalloc(sizeof(**res) * dimensions.rows);
	if (*res == NULL)
		return errorf("unable to malloc rows array");
	row_index = 0;
	while (row_index < dimensions.rows)
	{
		(*res)[row_index] = ft_memalloc(sizeof(***res) * dimensions.columns);
		if ((*res)[row_index] == NULL)
			return errorf("unable to malloc column in rows array");
		row_index++;
	}
	return (ERROR_NULL);
}

t_error			derive_rows(
					struct s_state_option ****res,
					struct s_derived_dimensions dimensions,
					t_list2 options)
{
	size_t			row_index;
	size_t			column_index;
	t_list2_item	*curr_option;
	t_error			error;

	error = malloc_rows(res, dimensions);
	if (is_error(error))
		return (error);
	curr_option = options.first;
	column_index = 0;
	while (column_index < dimensions.columns)
	{
		row_index = 0;
		while (row_index < dimensions.rows && curr_option != NULL)
		{
			(*res)[row_index][column_index] =
				(struct s_state_option *)curr_option->content;
			curr_option = curr_option->next;
			row_index++;
		}
		column_index++;
	}
	return (ERROR_NULL);
}

void			derive_free_rows(
					struct s_derived_dimensions dimensions,
					struct s_state_option ****rows)
{
	size_t	row_index;

	row_index = 0;
	while (row_index < dimensions.rows)
	{
		ft_memdel((void **)&(*rows)[row_index]);
		row_index++;
	}
	ft_memdel((void **)rows);
}