lexer_operator_utils.c

Bu dosyanın dokümantasyonuna git.

#include "../../include/minishell.h"
 
t_operator_type assess_operator_type(char *cmd, int i)
{
    if (cmd[i] == '<' && cmd[i + 1] == '<')
        return (OP_HEREDOC);
    if (cmd[i] == '>' && cmd[i + 1] == '>')
        return (OP_REDIR_APPEND);
    if (cmd[i] == '|')
        return (OP_PIPE);
    if (cmd[i] == '<')
        return (OP_REDIR_IN);
    if (cmd[i] == '>')
        return (OP_REDIR_OUT);
    return (OP_NONE);
}
 
int consume_operator(t_shell *shell, t_token_type type, char *val, int len)
{
    if (!append_token(shell, type, val, QUOTE_NONE))
        return (-1);
    return (len);
}
 
int operator_dispatcher(t_shell *shell, t_operator_type op_type)
{
    if (op_type == OP_PIPE)
        return (consume_operator(shell, TOKEN_PIPE, "|", 1));
    else if (op_type == OP_HEREDOC)
        return (consume_operator(shell, TOKEN_HEREDOC, "<<", 2));
    else if (op_type == OP_REDIR_IN)
        return (consume_operator(shell, TOKEN_REDIR_IN, "<", 1));
    else if (op_type == OP_REDIR_OUT)
        return (consume_operator(shell, TOKEN_REDIR_OUT, ">", 1));
    else if (op_type == OP_REDIR_APPEND)
        return (consume_operator(shell, TOKEN_REDIR_APPEND, ">>", 2));
    return (-1);
}
 
int handle_operator_error(t_shell *shell, int i)
{
    // TODO: Desteklenmeyen tüm karakterler için genişletilebilir. ": ; \ >>> <<<"
    if (shell->cmd_line[i] == '&')
        handle_syntax_error(shell, "&");
    else
        handle_syntax_error(shell, "unknown token");
    return (-1);
}
 
int handle_operator(t_shell *shell, int i)
{
    t_operator_type op_type;
    int consumed_len;
 
    op_type = assess_operator_type(shell->cmd_line, i);
    if (op_type == OP_NONE)
        return (handle_operator_error(shell, i));
    consumed_len = operator_dispatcher(shell, op_type);
    return (consumed_len);
}