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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* preprocess.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: charles <charles.cabergs@gmail.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/04/03 08:58:49 by charles #+# #+# */
/* Updated: 2020/04/05 14:58:00 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
#include "ms_glob.h"
static char *iterpolate(char *str, t_env env)
{
size_t i;
t_ftdstr *dstr;
char *match;
if ((dstr = ft_dstrnew(str)) == NULL)
return (NULL);
free(str);
i = 0;
while (i < dstr->length)
{
if (dstr->str[i] == '$')
{
if ((match = env_search_first_match(env, dstr->str + i + 1)) == NULL)
ft_dstrerase(dstr, i, utils_var_end(dstr->str + i + 1));
else
{
if (ft_dstrsubstitute(dstr, match, i, utils_var_end(dstr->str + i + 1)) == NULL)
return (NULL);
}
}
i++;
}
return (ft_dstrunwrap(dstr));
}
static char *preprocess_arg(char *arg, t_env env)
{
if (*arg == '\'')
return (ft_strsubf(arg, 1, ft_strlen(arg) - 1));
if (*arg == '"')
{
if (ft_strchr(arg, '$') != NULL)
arg = iterpolate(arg, env);
return (ft_strsubf(arg, 1, ft_strlen(arg) - 1));
}
if (ft_strchr(arg, '$') != NULL)
return (iterpolate(arg, env));
if (ft_strchr(arg, '*') != NULL)
return (ms_glob(arg));
return (arg);
}
char **preprocess_argv(char **argv, t_env env)
{
int i;
i = -1;
while (argv[++i] != NULL)
if ((argv[i] = preprocess_arg(argv[i], env)) == NULL)
return (NULL);
return (argv);
}
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