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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_u_utils.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 <stdlib.h>
#include <stdint.h>
#include "ft_f_fail.h"
#include "ft_s_destroy.h"
#include "ft_s_lcom.h"
#include "ft_s_struct.h"
uint64_t
ft_get_argc(const char *args[])
{
uint64_t argc;
argc = 0;
while (args[argc])
{
argc++;
}
return (argc);
}
char
*ft_get_home_dir(char **envp)
{
char **ptr;
char *path;
ptr = envp;
while (*ptr)
{
if (ft_strncmp("HOME", *ptr, 4) == 0)
{
path = ft_substr(*ptr, 5, ft_strlen(*ptr + 5));
return (path);
}
ptr++;
}
return (NULL);
}
/*
** char *
** ft_subst_var_value(const char varname[], const t_msh *msh);
**
** DESCRIPTION
** The ft_subst_var_value() function returns
** a heap-allocated, null-terminated string
** that may later be free'd containing the
** value of the variable varname[] including
** the '$' prefix. NULL is returned if varname[]
** wasn't found.
*/
char
*ft_subst_var_value(const char varname[],
t_msh *msh)
{
char **p_env;
char *varval;
p_env = msh->envp;
varval = NULL;
while (*p_env)
{
if (!ft_strncmp(*p_env, varname + 1, ft_strlen(varname + 1) + 1))
{
ft_printf("(%s)\n", *p_env);
while (**p_env != '\0' && **p_env != '=')
**p_env += 1;
if (**p_env == '=')
**p_env += 1;
if (!(varval = ft_strdup(*p_env)))
{
ft_lcom_clear(&msh->curr);
ft_s_destroy(msh);
ft_fail_alloc(msh);
}
return (varval);
}
p_env += 1;
}
return (NULL);
}
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