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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* interpolation.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <me@cacharle.xyz> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/10/09 15:27:46 by cacharle #+# #+# */
/* Updated: 2020/10/09 15:32:33 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include "eval.h"
#include "lexer.h"
#include "minishell.h"
static t_tok_lst *st_field_split(char *str)
{
t_tok_lst *ret;
char *match;
ret = NULL;
while (*str != '\0')
{
if ((match = ft_strchr(str, ' ')) == NULL)
{
if (tok_lst_push_front(&ret, tok_lst_new(TAG_STR, str)) == NULL)
return (tok_lst_destroy(&ret, free));
break ;
}
if (tok_lst_push_front(&ret,
tok_lst_new_until(TAG_STR, str, match - str)) == NULL)
return (tok_lst_destroy(&ret, free));
while (*++match == ' ')
;
str = match;
if (*str == '\0' && tok_lst_push_front(&ret,
tok_lst_new(TAG_STR, str)) == NULL)
return (tok_lst_destroy(&ret, free));
}
return ((t_tok_lst *)ft_lstreverse_ret((t_ftlst *)ret));
}
size_t interpolate(
char *str, size_t i, t_tok_lst **curr_addr, enum e_tok prev_tag, t_env env)
{
char *match;
size_t var_len;
t_tok_lst *curr;
char *before;
char *after;
size_t len;
t_tok_lst *fields;
t_tok_lst *last;
t_tok_lst *tmp;
curr = *curr_addr;
var_len = env_key_len(&str[i + 1], true) + 1;
if ((match = env_search_first_match(env, &str[i + 1])) == NULL)
{
ft_memmove(&str[i], &str[i + var_len], ft_strlen(&str[i + var_len]) + 1);
return (i);
}
str[i] = '\0';
before = str;
after = &str[i + var_len];
if (curr->tag & TAG_STR_DOUBLE)
{
curr->content = ft_strjoin3(before, match, after);
free(before);
return (i + ft_strlen(match));
}
if (curr->tag & TAG_STR)
{
fields = st_field_split(match);
if (fields == NULL)
return (i);
last = tok_lst_last(fields);
len = ft_strlen(last->content);
if (!(prev_tag & TAG_STICK) && *before == '\0' && *fields->content == '\0')
ft_lstpop_front((t_ftlst **)&fields, free);
if (!(curr->tag & TAG_STICK) && *after == '\0' && *last->content == '\0')
ft_lstpop_back((t_ftlst **)&fields, free);
if (fields == NULL)
;
else if (fields->next == NULL)
{
curr->content = ft_strjoin3(before, fields->content, after);
free(before);
tok_lst_destroy(&fields, free);
return (i + len);
}
else
{
last = tok_lst_last(fields);
last->tag = curr->tag;
curr->tag = TAG_STR;
curr->content = ft_strjoinf_snd(before, fields->content);
last->content = ft_strjoinf_fst(last->content, after);
free(before);
tmp = curr->next;
curr->next = fields->next;
(*curr_addr) = last;
(*curr_addr)->next = tmp;
free(fields);
return (len);
}
}
return (i);
}
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