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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* b_h.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/14 17:19:27 by rbousset #+# #+# */
/* Updated: 2020/02/14 17:19:29 by rbousset ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include <libft.h>
#include <stdint.h>
#include <stddef.h>
#include <unistd.h>
#include "d_define.h"
#include "f_fail.h"
#include "s_struct.h"
#include "u_utils.h"
static uint64_t b_get_total_hist(t_msh *msh)
{
uint64_t total;
char *ptr;
total = 0;
if (msh->prev_hist != NULL)
{
ptr = msh->prev_hist;
while (*ptr != C_NUL)
{
if (*ptr == C_LF)
total += 1;
ptr++;
}
}
ptr = msh->curr_hist_ptr;
while (*ptr != C_NUL)
{
if (*ptr == C_LF)
total += 1;
ptr++;
}
return (total);
}
static uint32_t b_print_prev_history(uint64_t asked, uint64_t total, t_msh *msh)
{
char *hist;
char *tok;
int64_t to_print;
int64_t i;
to_print = total - asked;
to_print = (to_print < 0) ? (0) : (to_print);
i = 1;
if (msh->prev_hist != NULL)
{
if ((hist = ft_strdup(msh->prev_hist)) == NULL)
return (i);
tok = ft_strtok(hist, "\n");
while (tok != NULL)
{
if (i > to_print)
ft_printf("%5lu %s\n", i, tok);
i++;
tok = ft_strtok(NULL, "\n");
}
ft_memdel((void*)&hist);
}
return (i);
}
static void b_print_history(uint64_t asked, uint64_t total, t_msh *msh)
{
char *hist;
char *tok;
int64_t to_print;
int64_t i;
to_print = total - asked;
to_print = (to_print < 0) ? (0) : (to_print);
i = b_print_prev_history(asked, total, msh);
if ((hist = ft_strdup(msh->curr_hist_ptr)) == NULL)
return ;
tok = ft_strtok(hist, "\n");
while (tok != NULL)
{
if (i > to_print)
ft_printf("%5lu %s\n", i, tok);
i++;
tok = ft_strtok(NULL, "\n");
}
ft_memdel((void*)&hist);
}
static t_bool b_check_numeric(const char arg[])
{
char *ptr;
ptr = (char*)arg;
while (*ptr != C_NUL)
{
if (ft_isdigit(*ptr) == FALSE)
{
return (FALSE);
}
ptr++;
}
return (TRUE);
}
uint8_t b_h(char *args[], t_msh *msh)
{
const uint64_t argc = u_builtins_get_argc((const char **)args);
if (argc > 1)
{
f_fail_too_many_args("h", msh);
return (127);
}
if (argc == 1 && b_check_numeric(*args) == FALSE)
{
ft_dprintf(STDERR_FILENO,
"minishell: history: %s: numeric argument required\n",
*args);
return (1);
}
else
{
if (argc == 1)
b_print_history(ft_atoi(*args), b_get_total_hist(msh), msh);
else
b_print_history(0, 0, msh);
}
return (0);
}
|