82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/* ************************************************************************** */
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/* */
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/* :::::::: */
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/* lexer_token_next.c :+: :+: */
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/* +:+ */
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/* By: qmennen <qmennen@student.codam.nl> +#+ */
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/* +#+ */
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/* Created: 2025/02/04 16:07:58 by qmennen #+# #+# */
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/* Updated: 2025/02/26 16:14:10 by whaffman ######## odam.nl */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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static t_token_type get_word_type(char c)
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{
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if (c == '\'')
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return (T_SQWORD);
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else if (c == '"')
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return (T_DQWORD);
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else
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return (T_WORD);
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}
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static t_token *process_word(t_minishell *msh, t_lexer *lexer, int pos)
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{
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t_token_type word_type;
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t_token *token;
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char *word;
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word_type = get_word_type(lexer->current_char);
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word = lexer_readword(msh, lexer);
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if (!word)
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return (token_new(msh, T_ERROR, &(lexer->current_char), pos));
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token = token_new(msh, word_type, word, pos);
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free_safe(msh, (void **)&word);
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return (token);
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}
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/**
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* @brief Retrieves the next token from the lexer.
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*
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* This function reads the next token from the lexer, skipping any whitespace
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* characters. It handles different types of tokens such as end-of-file (EOF),
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* special characters ('<', '>', '|'), printable characters, and errors.
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*
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* @param lexer A pointer to the lexer structure.
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* @return A pointer to the newly created token.
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*
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* The function performs the following steps:
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* 1. Skips any whitespace characters.
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* 2. Checks the current character in the lexer:
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* - If it is the end-of-file character ('\0'), creates an EOF token.
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* - If it is a special character ('<', '>', '|'), parses
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* the token accordingly.
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* - If it is a printable character, reads the word and creates a word token.
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* - Otherwise, creates an error token.
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*/
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t_token *ft_token_next(t_minishell *msh, t_lexer *lexer)
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{
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t_token *token;
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int current_pos;
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char c;
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token = NULL;
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while (ft_isspace(lexer->current_char))
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lexer_readchar(lexer);
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current_pos = lexer->pos;
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c = lexer->current_char;
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if (c == '\0')
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token = token_new(msh, T_EOF, NULL, current_pos);
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else if (c == '<' || c == '>'
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|| c == '|')
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token = token_parse(msh, lexer);
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else if (ft_isprint(lexer->current_char))
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token = process_word(msh, lexer, current_pos);
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else
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token = token_new(msh, T_ERROR, NULL, current_pos);
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c = lexer->current_char;
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return (token);
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}
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