169 lines
3.8 KiB
C
169 lines
3.8 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: 2025/02/08 10:53:48 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 is_validchar(char c)
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{
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if (ft_isalnum(c) || c == '_')
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return (1);
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return (0);
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}
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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_validchar(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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while (str[i] && is_validchar(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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static 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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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] == '$')
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{
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len += get_var_len(node, j , &i);
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i--;
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}
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i++;
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}
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return (len);
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}
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static int valid_next(char c)
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{
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if (c != '\0' && is_validchar(c))
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return (1);
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return (0);
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}
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void expander_var(t_ast_n *node, int j)
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{
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int i;
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int k;
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int len;
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char *new;
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i = -1;
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len = get_new_len(node, j);
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new = ft_calloc(len + 1, sizeof(char));
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if (!new)
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return ;
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k = 0;
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while (node->args[j][k] && ++i < len)
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{
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if (node->args[j][k] != '$')
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new[i] = node->args[j][k++];
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else if (node->args[j][k] == '$' && valid_next(node->args[j][k + 1]))
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{
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ft_strlcat(new, extract_env(&node->args[j][k], node->msh->env), -1);
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i = ft_strlen(new) - 1;
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while (node->args[j][++k] && is_validchar(node->args[j][k]))
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continue ;
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}
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}
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ft_free(&node->args[j]);
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node->args[j] = new;
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}
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int in_squote(char *str, char *ch)
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{
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if (!ft_strchr(str, '\'') && !ft_strchr(str, '\"'))
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return (0);
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else if (ft_strchr(str, '\'') && !ft_strchr(str, '\"'))
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{
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if ((ch > ft_strchr(str, '\'')) && ch < ft_strrchr(str, '\''))
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return (1);
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return (0);
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}
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else if (!ft_strchr(str, '\'') && ft_strchr(str, '\"'))
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return (0);
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else
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{
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if (ft_strchr(str, '\'') < ft_strchr(str, '\"'))
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{
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if ((ch > ft_strchr(str, '\'')) && ch < ft_strrchr(str, '\''))
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return (1);
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return (0);
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}
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return (0);
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}
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}
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int in_dquote(char *str, char *ch)
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{
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if (!ft_strchr(str, '\'') && !ft_strchr(str, '\"'))
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return (0);
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else if (ft_strchr(str, '\"') && !ft_strchr(str, '\''))
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{
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if ((ch > ft_strchr(str, '\"')) && ch < ft_strrchr(str, '\"'))
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return (1);
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return (0);
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}
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else if (!ft_strchr(str, '\"') && ft_strchr(str, '\''))
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return (0);
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else
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{
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if (ft_strchr(str, '\"') < ft_strchr(str, '\''))
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{
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if ((ch > ft_strchr(str, '\"')) && ch < ft_strrchr(str, '\"'))
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return (1);
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return (0);
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}
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return (0);
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}
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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] == '$' && !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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