mirror of
https://github.com/Ladebeze66/minishell.git
synced 2025-12-15 21:56:58 +01:00
103 lines
2.7 KiB
C
Executable File
103 lines
2.7 KiB
C
Executable File
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* export_utils.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: fgras-ca <fgras-ca@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/11/15 18:26:09 by fgras-ca #+# #+# */
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/* Updated: 2023/12/09 15:01:53 by fgras-ca ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../minishell.h"
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static char *create_env_entry(char **args)
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{
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char *new_env_entry;
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char *name;
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char *value;
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name = ft_strtok(args[1], "=");
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value = ft_strtok(NULL, "");
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if (name == NULL || value == NULL)
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{
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write(2, RED"minishell: invalid format for export. "
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"Use NAME=\"value\".\n"RST, 63);
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return (NULL);
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}
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new_env_entry = malloc(strlen(name) + strlen(value) + 2);
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if (!new_env_entry)
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{
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exit(EXIT_FAILURE);
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}
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ft_strcpy(new_env_entry, name);
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ft_strcat(new_env_entry, "=");
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ft_strcat(new_env_entry, value);
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return (new_env_entry);
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}
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int add_new_env_entry(t_minishell *shell, char *new_env_entry)
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{
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int env_size;
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size_t oldsize;
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env_size = 0;
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oldsize = 0;
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while (shell->environ[env_size] != NULL)
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{
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env_size++;
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}
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oldsize = (env_size + 1) * sizeof(char *);
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shell->environ = ft_reallocarray(shell->environ, env_size + 2,
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sizeof(char *), oldsize);
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if (!shell->environ)
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{
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perror(RED"minishell: error reallocating environment"RST);
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free(new_env_entry);
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return (1);
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}
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shell->environ[env_size] = new_env_entry;
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shell->environ[env_size + 1] = NULL;
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return (0);
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}
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int replace_env_entry(t_minishell *shell, char *new_env_entry)
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{
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int i;
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size_t name_length;
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i = 0;
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name_length = ft_strchr(new_env_entry, '=') - new_env_entry;
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while (shell->environ[i] != NULL)
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{
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if (ft_strncmp(shell->environ[i], new_env_entry, name_length) == 0)
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{
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free(shell->environ[i]);
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shell->environ[i] = new_env_entry;
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return (1);
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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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static int update_env(t_minishell *shell, char *new_env_entry)
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{
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if (replace_env_entry(shell, new_env_entry) == 0)
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{
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return (add_new_env_entry(shell, new_env_entry));
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}
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return (0);
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}
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int export_set_env(char **args, t_minishell *shell)
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{
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char *new_env_entry;
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new_env_entry = create_env_entry(args);
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if (new_env_entry == NULL)
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return (0);
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return (update_env(shell, new_env_entry));
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}
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