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builtins

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This commit is contained in:
Loic Deridder
2025-01-15 13:41:40 +01:00
parent eedfe4a0ee
commit 0ec78ee34c
11 changed files with 182 additions and 48 deletions
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2
Makefile
View File

@@ -26,7 +26,7 @@ $(LIBFT):
$(OBJDIR)/%.o: $(SRCDIR)/%.c
@mkdir -p $(dir $@)
@$(CC) $(WFLAGS) -MMD -MP -I$(INCDIR) -c $< -g3 -ggdb -o $@ $(LINK)
@$(CC) $(WFLAGS) -MMD -MP -I$(INCDIR) -c $< -o $@ $(LINK)
$(NAME): $(LIBFT) $(OBJS)
@$(CC) $(WFLAGS) $(OBJS) $(LIBFT) -o $(NAME) $(LINK)

8
includes/builtins.h
View File

@@ -8,11 +8,15 @@
# include <stdbool.h>
# include <unistd.h>
# include <errno.h>
# include <stdlib.h>
// void echo(char *msg, int flag);
void builtin_echo(char *arg);
void builtin_echo(char *arg, char **envp);
void builtin_exit(char *arg, bool depth);
void builtin_pwd(char *arg);
void builtin_env(char *str, char **envp);
void builtin_unset(char *str, char **envp);
//UTILS
int count_char(char *str);
#endif

2
lib/libft/srcs/format/ft_atoi.c
View File

@@ -52,7 +52,7 @@ int ft_atoi(const char *str)
int current_digit;
if (!str)
return (-1);
return (0);
res = 0;
i = 0;
while (ft_isspace(str[i]))

44
lib/libft/srcs/str/ft_strnstr.c
View File

@@ -15,23 +15,47 @@
char *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
size_t i;
size_t j;
int j;
i = 0;
if (!haystack || !needle)
return (NULL);
if (needle[0] == 0)
if (!haystack || !needle || *needle == 0)
return ((char *)haystack);
while (haystack[i] && i < len)
{
j = 0;
while (haystack[i + j] == needle[j] && i + j < len)
if (haystack[i] == needle[0])
{
j++;
if (needle[j] == 0)
return ((char *)(haystack + i));
j = 0;
while (haystack[i + j] == needle[j] && i + j < len)
{
j++;
if (needle[j] == 0)
return ((char *)(haystack + i));
}
}
i++;
}
return (NULL);
return (0);
}
// char *ft_strnstr(const char *haystack, const char *needle, size_t len)
// {
// size_t i;
// size_t j;
//
// i = 0;
// if (!haystack || !needle)
// return (NULL);
// if (needle[0] == 0)
// return ((char *)haystack);
// while (haystack[i] && i < len)
// {
// j = 0;
// while (haystack[i + j] == needle[j] && i + j < len)
// {
// j++;
// if (needle[j] == 0)
// return ((char *)(haystack + i));
// }
// i++;
// }
// return (NULL);
// }

29
srcs/builtins/cd.c
View File

@@ -1,27 +1,6 @@
#include "../../includes/builtins.h"
// static char *find_home(char **envp)
// {
// int i;
// char *str;
//
// i = 0;
// if (!envp)
// return (NULL);
// while (ft_strnstr(envp[i], "HOME=", 5) == 0)
// i++;
// str = envp[i + 5];
// return (str);
// }
//
// int cd(char *path, char **envp)
// {
// char *str;
//
// if (path == NULL)
// {
// //cd $HOME
// str = find_home(envp);
// chdir(str);
// }
// }
void builtin_cd(char *str)
{
(void)str;
}

42
srcs/builtins/echo.c
View File

@@ -24,14 +24,52 @@ int is_silent(char *str)
return (0);
}
void builtin_echo(char *arg)
static int extractenv(char *str, char **envp)
{
int i;
char *var;
char *tmp;
i = 0;
(void)envp;
while (str[i] && str[i] != ' ')
i++;
if (i >= 1)
tmp = ft_substr(str, 1, i - 1);
var = getenv(tmp);
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++;
printf("%s", &arg[i]);
echo_print(&arg[i], envp);
if (!is_silent(arg))
printf("\n");
}

14
srcs/builtins/env.c
View File

@@ -1 +1,15 @@
#include "../../includes/builtins.h"
void builtin_env(char *str, char **envp)
{
int i;
i = 0;
(void)str;
while (envp[i])
{
if (envp[i][0])
printf("%s\n", envp[i]);
i++;
}
}

19
srcs/builtins/exit.c
View File

@@ -5,6 +5,8 @@ int ft_isnumeric(char *str)
int i;
i = 0;
if (!str)
return (1);
while (str[i])
{
if (ft_isdigit(str[i]))
@@ -30,8 +32,23 @@ void bash_exit_error(char *arg)
exit(2);
}
void builtin_exit(char *arg, bool depth)
static char *get_arg(char *str)
{
int i;
i = 4;
if (!str[i])
return (NULL);
while (str[i] && str[i] == ' ')
i++;
return (&str[i]);
}
void builtin_exit(char *str, bool depth)
{
char *arg;
arg = get_arg(str);
if (depth == true)
{
if (!ft_isnumeric(arg))

20
srcs/builtins/pwd.c
View File

@@ -1,14 +1,30 @@
#include "../../includes/builtins.h"
int count_char(char *str)
{
int i;
int count;
i = 0;
count = 0;
while (str[i])
{
if (str[i] != ' ')
count++;
i++;
}
return (count);
}
void builtin_pwd(char *arg)
{
char *cwd;
if (ft_strlen(arg) > 3)
if (count_char(arg) > 3)
ft_putendl_fd("pwd: too many arguments", 2);
else
{
cwd = getcwd(NULL, 4096);
cwd = getcwd(NULL, 0);
if (cwd != NULL)
{
printf("%s\n", cwd);

21
srcs/builtins/unset.c
View File

@@ -1 +1,22 @@
#include "../../includes/builtins.h"
void builtin_unset(char *str, char **envp)
{
int i;
char *var;
if (count_char(str) == 5)
{
ft_putendl_fd("unset: not enough arguments", 2);
// exit(1);
}
i = 0;
while(str[5 + i] && str[5 + i] == ' ')
i++;
var = &str[5 + i];
i = 0;
while (ft_strnstr(envp[i], var, ft_strlen(var)) == NULL)
i++;
if (envp[i])
envp[i][0] = '\0';
}

27
srcs/main.c
View File

@@ -5,7 +5,7 @@ char *powerline(void)
char *pwd;
char *tilt;
pwd = getenv("PWD");
pwd = getcwd(NULL, 0);
if (ft_strncmp(pwd, "/home/", 6) == 0)
{
pwd = pwd + 6;
@@ -22,20 +22,41 @@ char *powerline(void)
return (readline(""));
}
char **ft_setnewenv(void)
{
char **envp;
envp = malloc(sizeof(char *) * 2);
if (!envp)
return (NULL);
envp[0] = ft_strjoin("PWD=", getcwd(NULL, 0));
envp[1] = ft_strdup("SHLVL=1");
if (!envp[0] || !envp[1])
return (ft_free(&envp[0]), ft_free(&envp[1]), NULL);
return (envp);
}
int main(int ac, char **av, char **envp)
{
char *input;
(void)ac;
(void)av;
(void)envp;
if (!envp[0])
envp = ft_setnewenv();
while (1)
{
input = powerline();
if (ft_strncmp(input, "exit", 4) == 0)
builtin_exit(&input[5], true);
builtin_exit(input, true);
if (ft_strncmp(input, "pwd", 3) == 0)
builtin_pwd(input);
if (ft_strncmp(input, "echo", 4) == 0)
builtin_echo(input, envp);
if (ft_strncmp(input, "env", 3) == 0)
builtin_env(input, envp);
if (ft_strncmp(input, "unset", 5) == 0)
builtin_unset(input, envp);
free(input);
}
return (0);