### Method

# Gio DataInputStream read_line_finish

since: 2.20

#### Declaration

    char*
    g_data_input_stream_read_line_finish (
      GDataInputStream* stream,
      GAsyncResult* result,
      gsize* length,
      GError** error
    )

#### Description

Finish an asynchronous call started by g_data_input_stream_read_line_async(). Note the warning about string encoding in `g_data_input_stream_read_line()` applies here as well.

Available since: 2.20

#### Parameters

`result`

  Type: `GAsyncResult`

  The `GAsyncResult` that was provided to the callback.

  The data is owned by the caller of the method.

`length`

  Type: `gsize*`

  A #gsize to get the length of the data read in.

  The argument will be set by the function.
  The argument can be `NULL`.

`error`

  Type: `GError **`

  The return location for a recoverable error.

  The argument can be `NULL`.
  If the return location is not `NULL`, then you must initialize it to a `NULL` `GError*`.
  The argument will be left initialized to `NULL` by the method if there are no errors.
  In case of error, the argument will be set to a newly allocated `GError`; the caller will take ownership of the data, and be responsible for freeing it.

#### Return value

Type: An array of `guint8`

a NUL-terminated byte array with the line that was read in (without the newlines). Set `length` to a #gsize to get the length of the read line. On an error, it will return `NULL` and `error` will be set. If there’s no content to read, it will still return `NULL`, but `error` won’t be set.

The array is `NULL`-terminated.
The caller of the method takes ownership of the data, and is responsible for freeing it.
The return value can be `NULL`.