utils.c File Reference

#include "shell.h"
#include <fcntl.h>
#include "libft.h"
#include "tokens.h"
#include "exit_status.h"

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Functions
int	open_file (t_ast *node, char *direction)
	open file in the context of redirection
int	open_tmp_file (const char *type)

Function Documentation

open_file()

int open_file	(	t_ast *	node,
		char *	direction
	)

open file in the context of redirection

-- "<" - read

• ">" - write
• ">>" - append
• "tty" - open /dev/tty

• Parameters

  node	current node in the AST

• Parameters

  direction

  type of redirection

• Returns

  int file descriptor

Definition at line 34 of file utils.c.

{
    int fd;
 
    if ((ft_strcmp(direction, "<") == 0) || (ft_strcmp(direction, "read") == 0))
        fd = open(node->args[0], O_RDONLY);
    else if (ft_strcmp(direction, ">") == 0)
        fd = open(node->args[0], O_WRONLY | O_CREAT | O_TRUNC, 0644);
    else if ((ft_strcmp(direction, ">>") == 0) \
            || (ft_strcmp(direction, "temp") == 0))
        fd = open(node->args[0], O_WRONLY | O_CREAT | O_APPEND, 0644);
    else if (ft_strcmp(direction, "tty") == 0)
        fd = open("/dev/tty", O_RDWR);
    else
        fd = -1;
    return (fd);
}

References s_ast::args, and ft_strcmp().

Referenced by open_and_redirect(), open_and_redirect(), and setup_redirection().

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open_tmp_file()

int open_tmp_file

(

const char *

type

)

Definition at line 52 of file utils.c.

{
    int file_fd;
 
    file_fd = -1;
    if (ft_strcmp(type, "w") == 0)
        file_fd = open("/tmp/heredoc", O_WRONLY | O_CREAT | O_TRUNC, 0644);
    else if (ft_strcmp(type, "r") == 0)
        file_fd = open("/tmp/heredoc", O_RDONLY);
    if (file_fd < 0)
        ft_perror("open");
    return (file_fd);
}

References ft_perror(), and ft_strcmp().

Referenced by redirect_here_doc().

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