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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* s_init.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 <stdlib.h>
#include <unistd.h>
#include <limits.h>
#include <dirent.h>
#include <errno.h>
#include "b_export_next.h"
#include "d_define.h"
#include "f_fail.h"
#include "m_funptr.h"
#include "s_init.h"
#include "u_vars.h"
#include "u_vars_next.h"
static char
**dupenv_del(char **nenvp,
uint64_t i)
{
while (i > 0)
{
ft_memdel((void*)&nenvp[i]);
i--;
}
ft_memdel((void*)&nenvp);
return (NULL);
}
static char
**dupenv(char *const envp[])
{
uint64_t i;
char **nenvp;
i = 0;
while (envp[i])
{
i++;
}
if (!(nenvp = (char**)malloc((i + 1) * sizeof(char*))))
{
return (NULL);
}
i = 0;
while (envp[i])
{
if (!(nenvp[i] = ft_strdup(envp[i])))
return (dupenv_del(nenvp, i));
i++;
}
nenvp[i] = NULL;
return (nenvp);
}
static void
inc_shlvl(t_msh *msh)
{
int32_t shlvl;
char *str_one;
char *str_two;
char *tmp;
char fmt[8];
if ((tmp = u_get_var_value("$SHLVL", msh)) == NULL)
{
ft_memcpy(fmt, "SHLVL=1", 8);
b_export_with_equals(fmt, msh);
}
else
{
ft_memdel((void*)&tmp);
str_two = u_get_var_value("$SHLVL", msh);
shlvl = ft_atoi(str_two);
if (shlvl >= 999)
f_shlvl_too_high(shlvl);
shlvl = (shlvl >= 999) ? 0 : shlvl;
shlvl = (shlvl < 0) ? 0 : shlvl + 1;
str_one = ft_itoa(shlvl);
u_subst_var_value("$SHLVL", str_one, msh);
ft_memdel((void*)&str_one);
ft_memdel((void*)&str_two);
}
}
static char
*set_cwd(t_msh *msh)
{
char *cwd;
char fmt[PATH_MAX];
DIR *dir;
if ((cwd = u_get_var_value("$PWD", msh)) == NULL)
{
cwd = getcwd(NULL, 0);
ft_sprintf(fmt, "%s=%s", "PWD", cwd);
b_export_with_equals(fmt, msh);
return (cwd);
}
if ((dir = opendir(cwd)) != NULL)
closedir(dir);
else if (errno == ENOENT)
{
ft_memdel((void*)&cwd);
cwd = getcwd(NULL, 0);
ft_sprintf(fmt, "%s=%s", "PWD", cwd);
b_export_with_equals(fmt, msh);
return (cwd);
}
return (cwd);
}
t_msh
*init_msh(char *const argv[],
char *const envp[])
{
t_msh *msh;
if (!(msh = (t_msh*)malloc(sizeof(t_msh))))
return (NULL);
if (!(msh->ps_one = ft_strdup(FT_PS_ONE)))
return (NULL);
if (!(msh->shname = ft_strdup(argv[0])))
return (NULL);
/* TODO: shname: care about "./", try with symlinks */
msh->envp = NULL;
if (!(msh->envp = dupenv(envp)))
return (NULL);
msh->ret = 0;
init_buptr(msh);
msh->curr = NULL;
msh->vars = NULL;
msh->cwd = set_cwd(msh);
msh->env_fork_tmp[0][0] = '\0';
inc_shlvl(msh);
return (msh);
}
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