92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* exec_redir.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/02/12 09:42:31 by lderidde #+# #+# */
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/* Updated: 2025/02/12 09:42:31 by lderidde ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../../includes/exec/exec.h"
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void handle_file(t_ast_n *node, int check, int i)
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{
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int fd;
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if (check == 1)
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fd = open(node->files[i], O_RDONLY);
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else if (check == 2)
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fd = open(node->files[i], O_WRONLY | O_CREAT | O_TRUNC, 0666);
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else if (check == 3)
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fd = open(node->files[i], O_WRONLY | O_CREAT | O_APPEND, 0666);
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if (fd == -1)
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{
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perror("open");
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exit(1);
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}
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if (check == 1)
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node->_stdin = fd;
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else if (check == 2 || check == 3)
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node->_stdout = fd;
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}
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static void save_stds(t_ast_n *node)
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{
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if (node->state == _PLINE || node->redir[0] != _NR)
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{
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node->save_stdo = dup(STDOUT_FILENO);
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node->save_stdi = dup(STDIN_FILENO);
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}
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}
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void handle_redir(t_ast_n *node)
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{
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int i;
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i = -1;
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save_stds(node);
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while (node->state != _PLINE && node->redir[++i] && node->redir[i] != _NR)
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{
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if (node->redir[i] == _RED_L)
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handle_file(node, 1, i);
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else if (node->redir[i] == _RED_R)
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handle_file(node, 2, i);
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else if (node->redir[i] == _RED_DR)
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handle_file(node, 3, i);
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else if (node->redir[i] == _RED_DL)
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here_doc(node, i);
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if (node->redir[i] == _RED_L)
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{
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dup2(node->_stdin, STDIN_FILENO);
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close(node->_stdin);
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}
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else if (node->redir[i] == _RED_R || node->redir[i] == _RED_DR)
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{
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dup2(node->_stdout, STDOUT_FILENO);
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close(node->_stdout);
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}
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}
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}
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void reset_redir(t_ast_n *node)
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{
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if (node->state == _PLINE || node->redir[0] != _NR)
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{
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dup2(node->save_stdo, STDOUT_FILENO);
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close(node->save_stdo);
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dup2(node->save_stdi, STDIN_FILENO);
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close(node->save_stdi);
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}
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}
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int err_fork_pline(int *pipes)
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{
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close(pipes[0]);
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close(pipes[1]);
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perror("fork");
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return (1);
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}
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