-
Notifications
You must be signed in to change notification settings - Fork 0
/
prompt.c
77 lines (62 loc) · 1.17 KB
/
prompt.c
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
#include <sys/wait.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/utsname.h>
#include "headerfile.h"
void get_relative_path(char *cwd , char *ans)
{
int l1 = strlen(myroot);
int l2 = strlen(cwd);
int flag1 = 0;
if( l2 < l1 )
{
for (int i = 0; i < l2; ++i)
ans[i] = cwd[i];
return;
}
if( l1 <= l2)
{
for (int i = 0; i < l1; ++i)
{
if(cwd[i] != myroot[i])
flag1 = 1;
}
if(flag1 == 0 && l1 == l2)
{
ans[0] = '~';
ans[1] = '\0';
}
else if (flag1 == 1 && l1 == l2)
{
for (int i = 0; i < l1; ++i)
ans[i] = cwd[i];
}
if(l1 == l2)
return;
}
if(flag1 == 1)
{
for (int i = 0; i < l2; ++i)
ans[i] = cwd[i];
return;
}
ans[0] = '~';
for (int i = l1; i < l2; ++i)
ans[i-l1+1] = cwd[i];
ans[l2-l1+1]='\0';
return;
}
void prompt()
{
char hostname[ARG_MAX];
gethostname(hostname,ARG_MAX - 1);
char *user;
user = getenv("USER");
char cwd[ARG_MAX];
getcwd (cwd,ARG_MAX - 1);
char *relpth = malloc(sizeof(char*) * ARG_MAX);
get_relative_path(cwd,relpth);
printf ("<%s@%s:%s> ",user,hostname,relpth);
}