69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* lexing.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2021/10/19 08:38:55 by lperrey #+# #+# */
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/* Updated: 2021/12/01 14:54:22 by lperrey ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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int fill_token(t_token *t, char *input, int *i, int *t_i);
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static int tokenize_input(t_token *t, char *input, size_t input_len);
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t_token *lexing(char *input)
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{
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t_token *t_head;
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t_token *t_tmp;
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size_t input_len;
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input_len = ft_strlen(input);
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t_head = ft_lstnew_generic(sizeof(t_token), input_len + 1);
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if (!t_head)
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return (ft_retp_perror(NULL, "ft_lstnew_generic() error"));
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if (!tokenize_input(t_head, input, input_len))
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return (ft_lstclear((t_list **)&t_head, free));
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t_tmp = (t_token *)ft_lstbeforelast((t_list *)t_head);
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if (t_tmp && t_tmp->next && !t_tmp->next->id)
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{
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ft_lstdelone((t_list *)t_tmp->next, free);
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t_tmp->next = NULL;
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}
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return (t_head);
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}
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static int tokenize_input(t_token *t, char *input, size_t input_len)
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{
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int i;
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int t_i;
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i = 0;
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t_i = 0;
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while (input[i])
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{
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if (fill_token(t, input, &i, &t_i) == DELIMITE_TOKEN && input[i] && t_i)
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{
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if (!t->id)
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t->id = T_WORD;
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t->next = ft_lstnew_generic(sizeof(t_token), input_len + 1 - i);
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if (!t->next)
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return (ft_reti_perror(0, "ft_lstnew_generic() error"));
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t = t->next;
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t_i = 0;
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}
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}
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if (!t->id && t_i)
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t->id = T_WORD;
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return (1);
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}
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/*
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https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html
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#tag_18_03
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*/
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