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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* u_vars.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 "d_define.h"
#include "f_fail.h"
#include "s_destroy.h"
#include "s_line.h"
#include "s_struct.h"
#include "u_utils.h"
static void u_get_frm_env(char str[],
const char varname[],
size_t dstsize,
t_msh *msh)
{
char **env_dup;
char *pp_env;
size_t i;
env_dup = u_get_env_var_names(msh);
i = 0;
while (env_dup[i] != NULL)
{
if (ft_strncmp(varname + 1, env_dup[i], ft_strlen(env_dup[i]) + 1) == 0)
{
pp_env = msh->envp[i];
while (*pp_env != '\0' && *pp_env != '=')
pp_env += 1;
if (*pp_env == '=')
pp_env += 1;
ft_strlcpy(str, pp_env, dstsize);
ft_delwords(env_dup);
return ;
}
i++;
}
ft_delwords(env_dup);
}
static void u_get_special_var(char str[],
const char varname[],
size_t dstsize,
t_msh *msh)
{
char tmp[255];
int n;
if (ft_strncmp(varname, M_RET_VAR, 3) == 0)
{
ft_uitoa_s(tmp, msh->ret);
ft_strlcpy(str, tmp, 4);
}
else if (ft_strncmp(varname, M_ARGC_VAR, 3) == 0)
{
ft_uitoa_s(tmp, msh->argc);
ft_strlcpy(str, tmp, 255);
}
else if (ft_strlen(varname) == 2 && ft_isdigit(*(varname + 1)) == TRUE)
{
if ((n = ft_atoi(varname + 1)) <= msh->argc)
ft_strlcpy(str, msh->argv[n], dstsize);
else
(void)ft_memcpy(str, "", 1 * sizeof(char));
}
}
void u_get_custom_var(char str[],
const char varname[],
size_t dstsize,
t_msh *msh)
{
t_lvars *ptr;
ptr = msh->vars;
while (ptr != NULL &&
ft_strncmp(varname + 1, ptr->name, ft_strlen(varname + 1) + 1) != 0)
{
ptr = ptr->next;
}
if (ptr != NULL)
{
ft_strlcpy(str, ptr->val, dstsize);
}
}
/*
** unsigned char
** u_get_var_value(char str[], const char varname[], size_t dstsize, t_msh *msh)
**
** DESCRIPTION
** The u_get_var_value() function fills
** str[] with a null-terminated string
** containing the value of the variable varname[]
** including the '$' prefix, in a similar way as
** sprintf does. No more than dstsize bytes will be
** copied into str[]. str[0] is set to \000 if
** varname[] wasn't found.
*/
unsigned char u_get_var_value(char str[],
const char varname[],
size_t dstsize,
t_msh *msh)
{
str[0] = C_NUL;
u_get_special_var(str, varname, dstsize, msh);
if (str[0] != C_NUL)
{
return (0);
}
u_get_custom_var(str, varname, dstsize, msh);
if (str[0] != C_NUL)
{
return (0);
}
u_get_frm_env(str, varname, dstsize, msh);
if (str[0] != C_NUL)
{
return (0);
}
return (1);
}
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