builtins.h File Reference

#include "shell.h"

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Functions
int	builtin_cd (t_ms_data *data)
int	builtin_echo (t_ms_data *data)
int	builtin_env (t_ms_data *data)
int	builtin_exit (t_ms_data *data)
int	builtin_export (t_ms_data *data)
int	builtin_pwd (t_ms_data *data)
int	builtin_unset (t_ms_data *data)

Function Documentation

builtin_cd()

int builtin_cd

(

t_ms_data *

data

)

Definition at line 28 of file cd.c.

{
    char    *target_dir;
    char    *home_dir;
    char    *error_message;
    char    cwd[4096];
 
    home_dir = get_env(data->envp, "HOME");
    target_dir = (char *)data->args[1];
    if (!target_dir)
        target_dir = home_dir;
    if (chdir(target_dir) == -1)
    {
        error_message = ft_strjoin("cd: ", target_dir);
        if (errno == EACCES)
            exit_status_handler(data, PERMISSION_DENIED, error_message);
        if (errno == ENOENT)
            exit_status_handler(data, IS_DIRECTORY, error_message);
        free(error_message);
        return (EXIT_FAILURE);
    }
    set_env(&data->envp, "OLDPWD", get_env(data->envp, "PWD"));
    if (getcwd(cwd, sizeof(cwd)) != NULL)
        set_env(&data->envp, "PWD", cwd);
    return (EXIT_SUCCESS);
}

References s_ms_data::args, s_ms_data::envp, EXIT_FAILURE, exit_status_handler(), EXIT_SUCCESS, ft_strjoin(), get_env(), IS_DIRECTORY, PERMISSION_DENIED, and set_env().

Referenced by execute().

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builtin_echo()

int builtin_echo

(

t_ms_data *

data

)

Definition at line 22 of file echo.c.

{
    int newline;
    int i;
 
    newline = 1;
    if (data->args[1] && (ft_strcmp(data->args[1], "-n") == 0))
    {
        newline = 0;
        data->args++;
    }
    i = 0;
    while (data->args[++i])
    {
        ft_putstr_fd(data->args[i], STDOUT_FILENO);
        if (data->args[i + 1])
            ft_putstr_fd(" ", STDOUT_FILENO);
    }
    if (newline)
        write(STDOUT_FILENO, "\n", 1);
    return (EXIT_SUCCESS);
}

References s_ms_data::args, EXIT_SUCCESS, ft_putstr_fd(), and ft_strcmp().

Referenced by execute().

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builtin_env()

int builtin_env

(

t_ms_data *

data

)

Definition at line 35 of file env.c.

{
    if (ft_strcmp(data->args[0], "env") == 0 && data->args[1] == NULL)
        print_env_stack(data->envp);
    else
    {
        ft_putstr_fd("env: '", STDERR_FILENO);
        ft_putstr_fd(data->args[1], STDERR_FILENO);
        ft_putstr_fd("': No such file or directory\n", STDERR_FILENO);
        set_exit_status(&data->exit_status, IS_DIRECTORY);
        set_shell_var(&data->shell_variables, "?", ft_itoa(data->exit_status));
        return (IS_DIRECTORY);
    }
    return (EXIT_SUCCESS);
}

References s_ms_data::args, s_ms_data::envp, s_ms_data::exit_status, EXIT_SUCCESS, ft_itoa(), ft_putstr_fd(), ft_strcmp(), IS_DIRECTORY, print_env_stack(), set_exit_status(), set_shell_var(), and s_ms_data::shell_variables.

Referenced by execute().

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builtin_exit()

int builtin_exit

(

t_ms_data *

data

)

Definition at line 62 of file exit.c.

{
    int number;
 
    number = 0;
    if (data->args[1])
    {
        if (ft_isnumber(data->args[1]) == 0)
            handle_numeric_error(data, data->args[1]);
        else if (data->args[2])
            handle_too_many_args_error(data);
        else
        {
            number = ft_atoi(data->args[1]);
            handle_exit(data, number);
        }
    }
    else
        handle_exit(data, 0);
    return (0);
}

References s_ms_data::args, ft_atoi(), ft_isnumber(), handle_exit(), handle_numeric_error(), and handle_too_many_args_error().

Referenced by execute().

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builtin_export()

int builtin_export

(

t_ms_data *

data

)

Definition at line 30 of file export.c.

{
    if (data->args == NULL || data->args[1] == NULL)
    {
        print_env(data->envp);
        return (EXIT_SUCCESS);
    }
    if (ft_strcmp(data->args[1], "-p") != 0 && data->args[1][0] == '-')
    {
        exit_status_handler(data, INVALID_OPTION, \
                ft_strjoin("export: ", data->args[1]));
        ft_putendl_fd("export: usage: export [-p]" \
                "[name[=value] ...] or export -p", STDERR_FILENO);
        return (INVALID_OPTION);
    }
    else if (ft_strcmp(data->args[1], "-p") == 0)
    {
        print_env(data->envp);
        return (EXIT_SUCCESS);
    }
    add_env(data);
    return (EXIT_SUCCESS);
}

References add_env(), s_ms_data::args, s_ms_data::envp, exit_status_handler(), EXIT_SUCCESS, ft_putendl_fd(), ft_strcmp(), ft_strjoin(), INVALID_OPTION, and print_env().

Referenced by execute().

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builtin_pwd()

int builtin_pwd

(

t_ms_data *

data

)

Definition at line 24 of file pwd.c.

{
    char    cwd[4096];
 
    (void)data;
    if (getcwd(cwd, sizeof(cwd)) != NULL)
        ft_putendl_fd(cwd, STDOUT_FILENO);
    return (EXIT_SUCCESS);
}

References EXIT_SUCCESS, and ft_putendl_fd().

Referenced by execute().

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builtin_unset()

int builtin_unset

(

t_ms_data *

data

)

Definition at line 29 of file unset.c.

{
    int     i;
    char    *key;
 
    i = 0;
    while (data->args[++i])
    {
        key = data->args[i];
        if (unset_env(&data->envp, key) == -1)
        {
            return (EXIT_SUCCESS);
        }
    }
    return (EXIT_SUCCESS);
}

References s_ms_data::args, s_ms_data::envp, EXIT_SUCCESS, and unset_env().

Referenced by execute().

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