cli: nmc_get_user_input() util function for getting user input

cli/src/utils.c

@@ -170,6 +170,32 @@ nmc_terminal_show_progress (const char *str)
 		idx = 0;
 }
 
+/*
+ * Ask user for input and return the string.
+ * The caller is responsible for freeing the returned string.
+ */
+char *
+nmc_get_user_input (const char *ask_str)
+{
+	char *line = NULL;
+	size_t line_ln = 0;
+	ssize_t read;
+
+	fprintf (stdout, "%s", ask_str);
+	read = getline (&line, &line_ln, stdin);
+
+	/* Remove newline from the string */
+	if (read < 1 || (read == 1 && line[0] == '\n')) {
+		g_free (line);
+		line = NULL;
+	} else {
+		if (line[read-1] == '\n')
+			line[read-1] = '\0';
+	}
+
+	return line;
+}
+
 /*
  * Find out how many columns an UTF-8 string occupies on the screen
  */

cli/src/utils.h

@@ -32,6 +32,7 @@ char *nmc_ip4_address_as_string (guint32 ip, GError **error);
 char *nmc_ip6_address_as_string (const struct in6_addr *ip, GError **error);
 void nmc_terminal_erase_line (void);
 void nmc_terminal_show_progress (const char *str);
+char *nmc_get_user_input (const char *ask_str);
 int nmc_string_screen_width (const char *start, const char *end);
 void set_val_str (NmcOutputField fields_array[], guint32 index, char *value);
 void set_val_arr (NmcOutputField fields_array[], guint32 index, char **value);