getinfo.c

getenv.c

@@ -0,0 +1,93 @@
+#include "shell.h"
+
+/**
+ * get_environ - returns the string array copy of our environ
+ * @info: Structure containing potential arguments. Used to maintain
+ *          constant function prototype.
+ * Return: Always 0
+ */
+char **get_environ(info_t *info)
+{
+	if (!info->environ || info->env_changed)
+	{
+		info->environ = list_to_strings(info->env);
+		info->env_changed = 0;
+	}
+
+	return (info->environ);
+}
+
+/**
+ * _unsetenv - Remove an environment variable
+ * @info: Structure containing potential arguments. Used to maintain
+ *        constant function prototype.
+ *  Return: 1 on delete, 0 otherwise
+ * @var: the string env var property
+ */
+int _unsetenv(info_t *info, char *var)
+{
+	list_t *node = info->env;
+	size_t i = 0;
+	char *p;
+
+	if (!node || !var)
+		return (0);
+
+	while (node)
+	{
+		p = starts_with(node->str, var);
+		if (p && *p == '=')
+		{
+			info->env_changed = delete_node_at_index(&(info->env), i);
+			i = 0;
+			node = info->env;
+			continue;
+		}
+		node = node->next;
+		i++;
+	}
+	return (info->env_changed);
+}
+
+/**
+ * _setenv - Initialize a new environment variable,
+ *             or modify an existing one
+ * @info: Structure containing potential arguments. Used to maintain
+ *        constant function prototype.
+ * @var: the string env var property
+ * @value: the string env var value
+ *  Return: Always 0
+ */
+int _setenv(info_t *info, char *var, char *value)
+{
+	char *buf = NULL;
+	list_t *node;
+	char *p;
+
+	if (!var || !value)
+		return (0);
+
+	buf = malloc(_strlen(var) + _strlen(value) + 2);
+	if (!buf)
+		return (1);
+	_strcpy(buf, var);
+	_strcat(buf, "=");
+	_strcat(buf, value);
+	node = info->env;
+	while (node)
+	{
+		p = starts_with(node->str, var);
+		if (p && *p == '=')
+		{
+			free(node->str);
+			node->str = buf;
+			info->env_changed = 1;
+			return (0);
+		}
+		node = node->next;
+	}
+	add_node_end(&(info->env), buf, 0);
+	free(buf);
+	info->env_changed = 1;
+	return (0);
+}

getinfo.c

@@ -0,0 +1,75 @@
+#include "shell.h"
+
+/**
+ * clear_info - initializes info_t struct
+ * @info: struct address
+ */
+void clear_info(info_t *info)
+{
+	info->arg = NULL;
+	info->argv = NULL;
+	info->path = NULL;
+	info->argc = 0;
+}
+
+/**
+ * set_info - initializes info_t struct
+ * @info: struct address
+ * @av: argument vector
+ */
+void set_info(info_t *info, char **av)
+{
+	int i = 0;
+
+	info->fname = av[0];
+	if (info->arg)
+	{
+		info->argv = strtow(info->arg, " \t");
+		if (!info->argv)
+		{
+
+			info->argv = malloc(sizeof(char *) * 2);
+			if (info->argv)
+			{
+				info->argv[0] = _strdup(info->arg);
+				info->argv[1] = NULL;
+			}
+		}
+		for (i = 0; info->argv && info->argv[i]; i++)
+			;
+		info->argc = i;
+
+		replace_alias(info);
+		replace_vars(info);
+	}
+}
+
+/**
+ * free_info - frees info_t struct fields
+ * @info: struct address
+ * @all: true if freeing all fields
+ */
+void free_info(info_t *info, int all)
+{
+	ffree(info->argv);
+	info->argv = NULL;
+	info->path = NULL;
+	if (all)
+	{
+		if (!info->cmd_buf)
+			free(info->arg);
+		if (info->env)
+			free_list(&(info->env));
+		if (info->history)
+			free_list(&(info->history));
+		if (info->alias)
+			free_list(&(info->alias));
+		ffree(info->environ);
+			info->environ = NULL;
+		bfree((void **)info->cmd_buf);
+		if (info->readfd > 2)
+			close(info->readfd);
+		_putchar(BUF_FLUSH);
+	}
+
+}