92 lines
1.3 KiB
C
92 lines
1.3 KiB
C
#include "../../includes/builtins.h"
|
|
|
|
int is_silentchar(char c)
|
|
{
|
|
if (c == 'n' || c == '-' || c == ' ')
|
|
return (1);
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
int is_silent(char *str)
|
|
{
|
|
int i;
|
|
|
|
i = 4;
|
|
while (str[i] && str[i] == ' ')
|
|
i++;
|
|
if (str[i] && str[i] == '-')
|
|
{
|
|
i++;
|
|
if (str[i] && str[i] == 'n')
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
char *ft_getenv(char *str, char **envp)
|
|
{
|
|
char *tmp;
|
|
int j;
|
|
size_t len;
|
|
|
|
j = 0;
|
|
tmp = ft_strjoin(str, "=");
|
|
len = ft_strlen(tmp);
|
|
while (envp[j] && ft_strnstr(envp[j], tmp, len) == NULL)
|
|
j++;
|
|
if (!envp[j])
|
|
return (free(tmp), NULL);
|
|
free(tmp);
|
|
return (&envp[j][len]);
|
|
}
|
|
|
|
int extractenv(char *str, char **envp)
|
|
{
|
|
int i;
|
|
char *var;
|
|
char *tmp;
|
|
|
|
i = 0;
|
|
while (str[i] && str[i] != ' ')
|
|
i++;
|
|
if (i >= 1)
|
|
tmp = ft_substr(str, 1, i - 1);
|
|
var = ft_getenv(tmp, envp);
|
|
free(tmp);
|
|
if (var)
|
|
ft_printf("%s", var);
|
|
return (i);
|
|
}
|
|
|
|
static void echo_print(char *str, char **envp)
|
|
{
|
|
int i;
|
|
|
|
i = 0;
|
|
while (str[i])
|
|
{
|
|
if (str[i] == '$')
|
|
{
|
|
if (!str[i + 1] || str[i + 1] == ' ')
|
|
ft_put_c(str[i++]);
|
|
else
|
|
i += extractenv(&str[i], envp);
|
|
}
|
|
else
|
|
ft_put_c(str[i++]);
|
|
}
|
|
}
|
|
|
|
void builtin_echo(char *arg, char **envp)
|
|
{
|
|
int i;
|
|
|
|
i = 4;
|
|
while (arg[i] && is_silentchar(arg[i]))
|
|
i++;
|
|
echo_print(&arg[i], envp);
|
|
if (!is_silent(arg))
|
|
printf("\n");
|
|
}
|