120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* expand_var.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/02/07 12:58:25 by lderidde #+# #+# */
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/* Updated: 2025/02/12 11:02:35 by lderidde ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../../includes/minishell.h"
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static int get_var_len(t_ast_n *node, int j, int *i)
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{
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int len;
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int ret;
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char *str;
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len = *i + 1;
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while (node->args[j][len] && is_exvalidchar(node->args[j][len]))
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len++;
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str = ft_substr(node->args[j], *i + 1, (size_t)len - (*i + 1));
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*i = len;
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ret = ft_strlen(get_var_value(str, node->msh->env));
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ft_free(&str);
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return (ret - (len - (*i + 1)));
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}
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static char *extract_env(char *str, char **envp)
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{
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int i;
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char *var;
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char *tmp;
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i = 1;
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tmp = NULL;
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while (str[i] && is_exvalidchar(str[i]))
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i++;
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if (i > 1)
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tmp = ft_substr(str, 1, i - 1);
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var = get_var_value(tmp, envp);
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free(tmp);
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return (var);
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}
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int get_new_len(t_ast_n *node, int j)
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{
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int i;
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int len;
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char *itoa;
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i = 0;
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len = ft_strlen(node->args[j]);
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while (node->args[j][i])
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{
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if (node->args[j][i] == '$' && (node->args[j][i + 1]
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&& node->args[j][i + 1] == '?')
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&& !in_squote(node->args[j], &node->args[j][i]))
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{
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itoa = ft_itoa(node->msh->ex_code);
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len += ft_strlen(itoa) - 2;
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free(itoa);
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}
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else if (node->args[j][i] == '$' &&
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!in_squote(node->args[j], &node->args[j][i]))
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{
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len += get_var_len(node, j, &i);
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i--;
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}
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i++;
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}
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return (len);
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}
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void expander_var(t_ast_n *nd, int j)
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{
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int i;
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int k;
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int len;
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char *new;
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i = -1;
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new = create_new(nd, j, &len);
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if (!new)
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return ;
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k = 0;
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while (nd->args[j][k] && ++i < len)
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{
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if (nd->args[j][k] != '$' || in_squote(nd->args[j], &nd->args[j][k]))
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new[i] = nd->args[j][k++];
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else if (expand_exit(nd, j, k))
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cat_exit(nd, &new, &i, &k);
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else if (valid_expand(nd, j, k))
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{
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ft_strlcat(new, extract_env(&nd->args[j][k], nd->msh->env), -1);
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i = ft_strlen(new) - 1;
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while (nd->args[j][++k] && is_exvalidchar(nd->args[j][k]))
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continue ;
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}
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}
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handle_copy(nd, j, &new);
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}
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int expand_var(t_ast_n *node, int j)
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{
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int i;
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i = 0;
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while (node->args[j][i])
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{
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if (node->args[j][i] == '$' &&
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!in_squote(node->args[j], &node->args[j][i]))
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return (expander_var(node, j), 1);
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i++;
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}
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return (0);
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}
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