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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* e_builtins.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 <sys/wait.h>
#include <libft.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include "b_builtins.h"
#include "b_export_next.h"
#include "b_export_mute.h"
#include "e_redirs.h"
#include "m_loop.h"
#include "s_com.h"
#include "s_destroy.h"
#include "s_line.h"
#include "s_struct.h"
#include "u_utils.h"
static void e_export_env_fork(const t_com *ptr, t_msh *msh)
{
char **re_ptr;
re_ptr = ptr->env_fork;
while (*re_ptr != NULL)
{
b_export_with_equals(*re_ptr, msh);
re_ptr++;
}
}
static void e_builtin_child(const t_com *ptr, uint8_t bu_id, t_msh *msh)
{
int32_t ret;
if (ptr->env_fork != NULL)
e_export_env_fork(ptr, msh);
e_dup_redirs(ptr, msh);
ret = 0;
if (bu_id == B_ID_H && msh->fd == STDIN_FILENO)
ret = msh->bu_ptr[bu_id](ptr->argv + 1, msh);
else
ret = msh->bu_ptr[bu_id](ptr->argv + 1, msh);
u_eof_fd(msh->fd);
s_com_destroy(&msh->com);
s_line_clear(&msh->curr);
s_destroy(msh);
exit(ret);
}
static void e_builtin_parent(pid_t pid,
const t_com *ptr,
uint8_t bu_id,
t_msh *msh)
{
int32_t status;
int32_t ret;
while (wait(&status) != pid)
;
ret = WEXITSTATUS(status);
msh->ret = ret;
if (bu_id == B_ID_CD && ret == 0)
msh->bu_ptr[bu_id](ptr->argv + 1, msh);
else if (bu_id == B_ID_EXPORT)
b_export_mute(ptr->argv + 1, msh);
else if (bu_id == B_ID_UNSET)
msh->bu_ptr[bu_id](ptr->argv + 1, msh);
else if (bu_id == B_ID_ALIAS)
b_alias_mute(ptr->argv + 1, msh);
else if (bu_id == B_ID_EXIT)
{
if (msh->fd == STDIN_FILENO)
m_dump_hist(msh);
s_com_destroy(&msh->com);
s_line_clear(&msh->curr);
s_destroy(msh);
exit(ret);
}
}
/*
** TODO: handle fork() failed
*/
void e_builtin(const t_com *ptr, uint8_t bu_id, t_msh *msh)
{
pid_t pid;
if ((pid = fork()) == 0)
{
e_builtin_child(ptr, bu_id, msh);
}
else if (pid < 0)
{
}
else
{
e_builtin_parent(pid, ptr, bu_id, msh);
}
}
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