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srcs/execution/exec_utils.c

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+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   exec_utils.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lderidde <lderidde@student.s19.be>        +#+  +:+       +#+         */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/02/12 09:57:39 by lderidde          #+#    #+#             */
+/*   Updated: 2025/02/12 09:57:39 by lderidde         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../../includes/exec/exec.h"
+
+int	execis_validchar(char c)
+{
+	if (ft_isalnum(c) || c == '_')
+		return (1);
+	return (0);
+}
+
+int	execget_var_len(char *str, t_ast_n *node, int *j)
+{
+	int		len;
+	int		ret;
+	char	*var;
+
+	len = *j + 1;
+	while (str[len] && execis_validchar(str[len]))
+		len++;
+	var = ft_substr(str, *j + 1, (size_t)len - (*j + 1));
+	*j = len;
+	ret = ft_strlen(get_var_value(var, node->msh->env));
+	ft_free(&var);
+	return (ret - (len - (*j + 1)));
+}
+
+int	get_dup_len(char *str, t_ast_n *node)
+{
+	int	i;
+	int	len;
+
+	i = 0;
+	len = ft_strlen(str);
+	while (str[i])
+	{
+		if (str[i] == '$')
+		{
+			len += execget_var_len(str, node, &i);
+			i--;
+		}
+		i++;
+	}
+	return (len);
+}
+
+int	execvalid_next(char c)
+{
+	if (c != '\0' && execis_validchar(c))
+		return (1);
+	return (0);
+}
+
+char	*execextract_env(char *str, char **envp)
+{
+	int		i;
+	char	*var;
+	char	*tmp;
+
+	i = 1;
+	while (str[i] && execis_validchar(str[i]))
+		i++;
+	if (i > 1)
+		tmp = ft_substr(str, 1, i - 1);
+	var = get_var_value(tmp, envp);
+	ft_free(&tmp);
+	return (var);
+}