341 lines
6.6 KiB
C
341 lines
6.6 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* redirection.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: apommier <apommier@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/03/09 15:18:58 by apommier #+# #+# */
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/* Updated: 2022/04/16 11:03:41 by apommier ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../../includes/minishell.h"
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char next_space(char *str, int i)
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{
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//i++;
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while (str[i] == ' ')
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i++;
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return (str[i]);
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}
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char *cut_str(char *str, int start, int end)
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{
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char *swap;
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char *del;
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swap = 0;
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del = str;
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if (str[end])
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swap = ft_strjoin(&str[end], 0);
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str[start] = 0;
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str = ft_strjoin(str, swap);
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free(del);
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free(swap);
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return (str);
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}
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char *get_word(char *str, int start)
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{
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char *new;
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int i;
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i = 0;
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while (str[start + i] == '<' || str[start + i] == '>')
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i++;
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while (str[start + i] == ' ')
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i++;
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new = ft_strjoin(&str[start + i], 0);
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i = 0;
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while (new[i] && new[i] != ' ' && new[i] != '>' && new[i] != '<')
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i++;
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new[i] = 0;
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//printf("get word= %s\n", new);
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return (new);
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}
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char *set_input(char *line, t_s_cmd *cmd, int index)
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{
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int i;
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int word_index;
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word_index = 0;
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i = index;
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i++;
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if (line[i] == '<')
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i++;
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word_index = i;
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while (line[i] == ' ' && line[i])
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i++;
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while ((line[i] != ' ' && line[i] != '<' && line[i] != '>') && line[i])
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i++;
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cmd->infile = get_word(line, index);
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cmd->infile = set_var(cmd->big_cmd, cmd->infile);
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if (access(cmd->infile, R_OK))
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{
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ft_putstr_fd("Minishell: ", 2);
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ft_putstr_fd(cmd->infile, 2);
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if (access(cmd->infile, F_OK))
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ft_putstr_fd(": no such file\n", 2);
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else
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ft_putstr_fd(": Permission denied\n", 2);
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return (0);
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}
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line = cut_str(line, index, i);
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return (line);
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}
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char *set_output(char *line, t_s_cmd *cmd, int index)
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{
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int i;
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int word_index;
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word_index = 0;
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i = index;
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i++;
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if (line[i] == '>')
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i++;
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word_index = i;
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while (line[i] == ' ' && line[i])
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i++;
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while ((line[i] != ' ' && line[i] != '<' && line[i] != '>') && line[i])
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i++;
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cmd->outfile = get_word(line, index);
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cmd->outfile = set_var(cmd->big_cmd, cmd->outfile);
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line = cut_str(line, index, i);
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return (line);
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}
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//choose type of redirection, check error
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char *ft_input(char *line, t_s_cmd *cmd, int index)
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{
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int i;
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char next;
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i = index;
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next = next_space(line, i + 1);
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if (line[i + 1] == '<')
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{
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cmd->in_type = 1;
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next = next_space(line, i + 2);
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}
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else
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cmd->in_type = 0;
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if (next == '<' || next == '>' || !next)
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return (0);
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//printf("line bf set_input -%s-", line);
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line = set_input(line, cmd, i);
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if (!line)
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return (0);
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//printf("line -%s-\n", line);
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return (line);
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}
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char *ft_output(char *line, t_s_cmd *cmd, int index)
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{
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int i;
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char next;
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i = index;
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next = next_space(line, i + 1);
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if (line[i + 1] == '>')
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{
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cmd->in_type = 1;
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next = next_space(line, i + 2);
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}
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else
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cmd->in_type = 0;
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if (next == '<' || next == '>' || !next)
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return (0);
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line = set_output(line, cmd, i);
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//printf("line -%s-\n", line);
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return (line);
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}
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int set_file(char *file)
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{
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int fd;
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//printf("setfile= %s\n", file);
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fd = open(file, O_TRUNC | O_CREAT, 0644);
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if (fd == -1)
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{
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ft_putstr_fd("Minishell: ", 2);
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ft_putstr_fd(file, 2);
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ft_putstr_fd(": Permission denied\n", 2);
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return (0);
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}
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//error_redirect("can't set file");
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if (fd)
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close(fd);
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return (1);
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}
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char **add_line(char **tab, char *line)
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{
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int size;
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char **ret;
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int i;
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i = 0;
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size = 0;
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ret = 0;
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if (tab)
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size = double_size(tab);
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ret = ft_calloc(size + 2, sizeof(char*));
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if (!ret)
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return (0);
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while (tab && tab[i])
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{
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ret[i] = ft_strjoin(tab[i], 0);
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i++;
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}
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ret[i] = ft_strjoin(line, 0);
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ret[i + 1] = 0;
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if (tab)
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free_double(tab);
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return(ret);
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}
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/*void del_heredoc()
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{
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}*/
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char *set_heredoc(int index, char **in)
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{
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char *nbr_file;
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char *file_name;
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int fd;
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int i;
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i = 0;
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if (index)
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{
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nbr_file = ft_itoa(index + 1);
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file_name = ft_strjoin(".heredoc", nbr_file);
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}
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else
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file_name = ft_strjoin(".heredoc", 0);
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fd = open(file_name, O_RDWR | O_CREAT | O_TRUNC, 0666);
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if (fd > 0)
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{
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print_double_fd(in, fd);
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free_double(in);
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}
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close(fd);
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return (file_name);
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}
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void sig_heredoc(int num)
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{
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num = 0;
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struct sigaction base;
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base.sa_handler = &crtl_c;
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base.sa_flags = 0;
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close(1);
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//printf("sig_heredoc\n");
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if (sigaction(SIGINT, &base, 0) == -1)
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{
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printf("sigaction error2\n");
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return ;
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}
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}
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int wait_prompt(t_s_cmd *cmd, int index)
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{
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char *input;
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int i;
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char **history;
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char *in;
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char *dup;
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struct sigaction test;
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test.sa_handler = &sig_heredoc;
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test.sa_flags = 0;
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in = ft_strjoin(cmd->infile, "\n");
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free(cmd->infile);
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cmd->infile = 0;
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if (sigaction(SIGINT, &test, 0) == -1)
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{
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printf("sigaction error\n");
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exit(1);
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}
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//printf("wait_prompt\n");
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history = 0;
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input = 0;
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i = 0;
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while (i == 0 || (input && ft_strlen(input) && ft_strcmp(input, in)))
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{
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i = 1;
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ft_putstr_fd("> ", 0);
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input = get_next_line(0);
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//input = readline("");
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//printf("input= -%s-", input);
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if (!input)
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return (0);
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//input[ft_strlen(input) - 1] = 0;
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if (ft_strcmp(input, in))
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{
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dup = ft_strdup(input);
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dup[ft_strlen(input) - 1] = 0;
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dup = set_var(cmd->big_cmd, dup);
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history = add_line(history, dup);
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}
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}
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free(input);
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//free(cmd->infile);
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//cmd->infile = 0;//option?
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cmd->infile = set_heredoc(index, history);
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cmd->in_type = 0;
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return (1);
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}
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char *set_redirection(t_s_cmd *cmd, char *line, int index)
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{
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int i;
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i= 0;
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// printf("enter redirection\n");
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while (line[i])
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{
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//printf("line[i] i= %d\n", i);
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//printf("-%s-\n", line);
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if(line[i] == '<')
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{
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if (!is_in_quote(line, i))
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{
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line = ft_input(line, cmd, i);
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if (!line)
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return (0);
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if (cmd->in_type == 1)
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{
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if (!wait_prompt(cmd, index))
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return (0);
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}
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i = 0;
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}
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}
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else if(line[i] == '>')
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{
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if (!is_in_quote(line, i))
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{
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line = ft_output(line, cmd, i);
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//if (cmd->in_type == 0)
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if (!set_file(cmd->outfile))
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return (0);
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i = 0;
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}
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}
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if (line[i] && (line[i] == '<' || line[i] == '>') && is_in_quote(line, i))
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i++;
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else if (line[i] && line[i] != '<' && line[i] != '>')
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i++;
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}
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return(line);
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} |