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138 lines
2.9 KiB
138 lines
2.9 KiB
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* env.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: mea <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/02/16 09:41:29 by narnaud #+# #+# */
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/* Updated: 2022/05/27 08:51:55 by narnaud ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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static void clean_env(t_datas *datas, int i);
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int ft_unset(t_datas *datas, t_command *cmd)
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{
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char **env;
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int i;
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int j;
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int name_len;
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if (cmd->argc < 2)
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return (1);
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env = datas->envp;
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i = 1;
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while (i < cmd->argc && datas->envp[i - 1])
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{
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name_len = ft_strlen(cmd->argv[i]);
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j = 0;
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while (datas->envp[j])
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{
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env = ft_split(datas->envp[j], '=');
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if (!ft_strncmp(cmd->argv[i], env[0], name_len + 1))
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clean_env(datas, j);
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else if (++j)
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ft_free_split(env);
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}
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i++;
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}
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return (0);
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}
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int ft_env(t_datas *datas, t_command *cmd, int declared_pop)
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{
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int i;
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int fd_out;
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if (cmd->fd[1])
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fd_out = cmd->fd[1];
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else
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fd_out = 1;
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i = 0;
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while (datas->envp[i])
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{
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if (declared_pop)
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ft_putstr_fd("declare -x ", fd_out);
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ft_putstr_fd(datas->envp[i], fd_out);
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ft_putchar_fd('\n', fd_out);
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i++;
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}
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return (0);
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}
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int save_var(t_datas *datas, char *argv)
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{
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int i;
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int name_len;
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char **env;
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char **var;
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var = ft_split(argv, '=');
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name_len = ft_strlen(var[0]);
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if (!is_valid_identifier(var[0], 0))
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return (1);
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i = 0;
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while (datas->envp[i])
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{
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env = ft_split(datas->envp[i], '=');
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if (!ft_strncmp(var[0], env[0], name_len + 1))
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datas->envp[i] = (free(datas->envp[i]), NULL);
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else
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i++;
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ft_free_split(env);
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}
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datas->envp[i] = ft_strdup(argv);
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ft_free_split(var);
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return (0);
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}
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int ft_export(t_datas *datas, t_command *cmd)
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{
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int i;
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int tmp;
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int ret;
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if (cmd->argc < 2 && (ft_env(datas, cmd, 1), 1))
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return (0);
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ret = 0;
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i = 0;
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while (++i < cmd->argc)
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{
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if (!cmd->argv[i][0] || cmd->argv[i][0] == '=')
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{
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ret = 1;
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continue ;
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}
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tmp = save_var(datas, cmd->argv[i]);
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if (tmp)
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ret = tmp;
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}
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return (ret);
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}
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static void clean_env(t_datas *datas, int i)
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{
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int j;
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free(datas->envp[i]);
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datas->envp[i] = NULL;
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i = 0;
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j = 0;
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while (i < ENVP_MAX_SIZE)
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{
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if (!datas->envp[i])
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{
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j = 1;
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while (!datas->envp[i + j] && (i + j) < ENVP_MAX_SIZE)
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j++;
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if (i + j == ENVP_MAX_SIZE)
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return ;
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datas->envp[i] = datas->envp[i + j];
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datas->envp[i + j] = NULL;
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}
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i++;
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}
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}
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