113 lines
2.7 KiB
C
Executable File
113 lines
2.7 KiB
C
Executable File
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* export.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: marde-vr <marde-vr@42angouleme.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/02/18 18:29:20 by marde-vr #+# #+# */
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/* Updated: 2024/05/03 14:29:08 by tomoron ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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int export_invalid_identifier(char *arg, char *name)
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{
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ft_putstr_fd("minishell: export: `", 2);
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ft_putstr_fd(arg, 2);
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ft_putstr_fd("': not a valid identifier\n", 2);
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free(name);
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return (1);
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}
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t_env *set_env(t_env *env, char *name, char *value, int flags)
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{
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t_env *tmp;
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tmp = env;
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while (tmp)
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{
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if (!ft_strcmp(name, tmp->name))
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{
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free(name);
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if (!*value && !(flags & 0b10))
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{
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free(value);
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return (env);
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}
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if ((flags & 0b1) && tmp->value)
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value = ft_strjoin_free(tmp->value, value, 2);
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if (!value)
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return (env);
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free(tmp->value);
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tmp->value = value;
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return (env);
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}
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tmp = tmp->next;
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}
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return (env_add_back(env, name, value, !(flags & 0b10)));
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}
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t_env *export_set_env(t_env *env, char *name, char *value, int flags)
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{
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if (!value || !name)
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{
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free(name);
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free(value);
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ft_printf_fd(2, "minishell: malloc failed");
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return (env);
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}
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return (set_env(env, name, value, flags));
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}
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int export_var(t_token *cmd, t_env *env)
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{
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char *arg;
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char *name;
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char *value;
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int len;
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int flags;
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len = 0;
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arg = cmd->value;
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while (arg[len] && arg[len] != '=' && arg[len] != '+')
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len++;
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name = ft_substr(arg, 0, len);
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flags = arg[len] == '+';
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if (arg[len] == '+' && arg[len + 1] == '=')
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len++;
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if (arg[len] == '=')
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{
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flags += 0b10;
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len++;
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}
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if (!name || !check_var_name(name) || arg[len] == '+')
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return (export_invalid_identifier(arg, name));
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value = ft_strdup(arg + len);
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env = export_set_env(env, name, value, flags);
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return (0);
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}
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int ft_export(t_msh *msh, t_token *cmd, t_env *env)
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{
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int error;
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error = 0;
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if (cmd && !cmd->next)
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{
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print_env_declare(msh, env);
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return (0);
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}
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cmd = cmd->next;
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while (cmd->next)
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{
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if (export_var(cmd, env))
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error = 1;
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cmd = cmd->next;
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}
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if (export_var(cmd, env))
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error = 1;
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return (error);
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}
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