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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* u_vars_next.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 <inttypes.h>
#include <stdlib.h>
#include "s_struct.h"
static int64_t
u_get_var_line(const char varname[],
t_msh *msh)
{
char **env_ptr;
int64_t i;
env_ptr = msh->envp;
i = 0;
while (*env_ptr &&
ft_strncmp(*env_ptr, varname, ft_strlen(varname)) != 0)
{
env_ptr++;
i++;
}
if (*env_ptr)
return (i);
else
return (-1);
}
/*
** void
** u_subst_var_value(const char varname[], const char newval[], t_msh *msh);
**
** DESCRIPTION
** The subst_var_value() changes the value of msh->envp
** variable varname[] with newval[]. If varname[] wasn't found
** in msh->envp, varname[] is searched in msh->vars.
*/
void
u_subst_var_value(const char varname[],
const char newval[],
t_msh *msh)
{
char new_line_fmt[2048];
int64_t env_line;
if ((env_line = u_get_var_line(varname + 1, msh)) > -1)
{
ft_memdel((void*)&msh->envp[env_line]);
ft_sprintf(new_line_fmt, "%s=%s", varname + 1, newval);
if (!(msh->envp[env_line] =
(char*)malloc((ft_strlen(new_line_fmt) + 1) * sizeof(char))))
{
/* TODO: Handle this fail */
}
(void)ft_strlcpy(msh->envp[env_line], new_line_fmt, ft_strlen(new_line_fmt) + 1);
}
else
{
/* TODO: Search in custom vars */
}
}
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