83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* cd.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2021/12/04 19:31:19 by lperrey #+# #+# */
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/* Updated: 2021/12/08 22:33:56 by lperrey ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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#define CMD "builtin_cd"
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static int change_prompt(t_all *c);
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static int change_env_pwd(void);
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int builtin_cd(int argc, char *argv[], t_all *c)
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{
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char *dir;
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if (argc > 2)
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return (shell_error("cd: ", "too many arguments", "", EXIT_FAILURE));
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else if (argc < 2 || ft_strncmp(argv[1], "~", 2) == 0)
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{
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dir = getenv("HOME");
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if (!dir)
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return (shell_error("cd: ", "HOME not set", "", EXIT_FAILURE));
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}
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else if (argc == 2)
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dir = argv[1];
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if (chdir(dir) == -1)
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return (shell_perror("cd: ", dir, ": ", EXIT_FAILURE));
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if (change_prompt(c) == -1)
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return (ft_reti_perror(EXIT_FAILURE, CMD", change_prompt()"));
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if (change_env_pwd() == -1)
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return (ft_reti_perror(EXIT_FAILURE, CMD", change_env_pwd()"));
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return (EXIT_SUCCESS);
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}
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static int change_prompt(t_all *c)
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{
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char *tmp;
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tmp = init_prompt(c->prompt_base);
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if (!tmp)
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return (-1);
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free(c->prompt);
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c->prompt = tmp;
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return (0);
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}
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static int change_env_pwd(void)
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{
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char *tmp;
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int ret;
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tmp = getenv("PWD");
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if (tmp)
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{
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tmp = ft_strjoin("OLDPWD=", tmp);
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if (!tmp)
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return (-1);
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ret = export_var(tmp);
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free(tmp);
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if (ret == -1)
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return (-1);
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}
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tmp = getcwd(NULL, 0);
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if (!tmp)
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return (-1);
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tmp = ft_strjoinfree_s2("PWD=", tmp);
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if (!tmp)
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return (-1);
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ret = export_var(tmp);
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free(tmp);
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if (ret == -1)
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return (-1);
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return (0);
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}
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