shell/parser.c at main · drezzgo/shell · GitHub

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#include <unistd.h>
#include "shell.h"
#include "parser.h"
#include "scanner.h"
#include "node.h"
#include "source.h"


struct node_s *parse_simple_command(struct token_s *tok)
{
    if(!tok)
    {
        return NULL;
    }

    struct node_s *cmd = new_node(NODE_COMMAND);
    if(!cmd)
    {
        free_token(tok);
        return NULL;
    }

    struct source_s *src = tok->src;

    do
    {
        if(tok->text[0] == '\n')
        {
            free_token(tok);
            break;
        }

        struct node_s *word = new_node(NODE_VAR);
        if(!word)
        {
            free_node_tree(cmd);
            free_token(tok);
            return NULL;
        }
        set_node_val_str(word, tok->text);
        add_child_node(cmd, word);

        free_token(tok);

    } while((tok = tokenize(src)) != &eof_token);

    return cmd;
}