Package org.apache.cxf.helpers

## Class IOUtils

- java.lang.Object
- - org.apache.cxf.helpers.IOUtils

-     public final class IOUtils
      extends Object

- - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static int` | `DEFAULT_BUFFER_SIZE` |
    `static Charset` | `UTF8_CHARSET` |

  - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `static void` | `consume​(InputStream in)` |
    `static void` | `consume​(InputStream input, int atLeast)` | Consumes at least the given number of bytes from the input stream
    `static int` | `copy​(InputStream input, OutputStream output)` |
    `static int` | `copy​(InputStream input, OutputStream output, int bufferSize)` |
    `static void` | `copy​(Reader input, Writer output, int bufferSize)` |
    `static int` | `copyAndCloseInput​(InputStream input, OutputStream output)` |
    `static int` | `copyAndCloseInput​(InputStream input, OutputStream output, int bufferSize)` |
    `static void` | `copyAndCloseInput​(Reader input, Writer output)` |
    `static void` | `copyAndCloseInput​(Reader input, Writer output, int bufferSize)` |
    `static void` | `copyAtLeast​(InputStream input, OutputStream output, int atLeast)` | Copy at least the specified number of bytes from the input to the output or until the inputstream is finished.
    `static void` | `copyAtLeast​(Reader input, Writer output, int atLeast)` |
    `static boolean` | `isEmpty​(InputStream is)` |
    `static ByteArrayInputStream` | `loadIntoBAIS​(InputStream in)` | Load the InputStream into memory and return a ByteArrayInputStream that represents it.
    `static String` | `newStringFromBytes​(byte[] bytes)` | Use this function instead of new String(byte[]) to avoid surprises from non-standard default encodings.
    `static String` | `newStringFromBytes​(byte[] bytes, int start, int length)` | Use this function instead of new String(byte[], int, int) to avoid surprises from non-standard default encodings.
    `static String` | `newStringFromBytes​(byte[] bytes, String charsetName)` | Use this function instead of new String(byte[], String) to avoid surprises from non-standard default encodings.
    `static String` | `newStringFromBytes​(byte[] bytes, String charsetName, int start, int length)` | Use this function instead of new String(byte[], int, int, String) to avoid surprises from non-standard default encodings.
    `static InputStream` | `nullOrNotEmptyStream​(InputStream is)` | Checks if input stream is empty.
    `static byte[]` | `readBytesFromStream​(InputStream in)` |
    `static String` | `readStringFromStream​(InputStream in)` |
    `static String` | `toString​(InputStream input)` |
    `static String` | `toString​(InputStream input, int bufferSize)` |
    `static String` | `toString​(InputStream input, int bufferSize, String charset)` |
    `static String` | `toString​(InputStream input, String charset)` |
    `static String` | `toString​(Reader input)` |
    `static String` | `toString​(Reader input, int bufSize)` |
    `static void` | `transferTo​(InputStream inputStream, File destinationFile)` |

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### UTF8_CHARSET

          public static final Charset UTF8_CHARSET

    - #### DEFAULT_BUFFER_SIZE

          public static final int DEFAULT_BUFFER_SIZE

      See Also:
        Constant Field Values

  - ### Method Detail

    - #### nullOrNotEmptyStream

          public static InputStream nullOrNotEmptyStream​(InputStream is)
                                                  throws IOException

      Checks if input stream is empty. If the standard InputStream means do not provide such details, the stream might be wrapped into PushbackInputStream and is going to be returned instead of original one.
      Parameters:
        `is` - input stream to check
      Returns:
        "null" if original input stream is empty, otherwise original stream or original stream wrapped into PushbackInputStream.
      Throws:
        `IOException`

    - #### isEmpty

          public static boolean isEmpty​(InputStream is)
                                 throws IOException

      Throws:
        `IOException`

    - #### newStringFromBytes

          public static String newStringFromBytes​(byte[] bytes,
                                                  String charsetName)

      Use this function instead of new String(byte[], String) to avoid surprises from non-standard default encodings.
      Parameters:
        `bytes` -
        `charsetName` -

    - #### newStringFromBytes

          public static String newStringFromBytes​(byte[] bytes)

      Use this function instead of new String(byte[]) to avoid surprises from non-standard default encodings.
      Parameters:
        `bytes` -

    - #### newStringFromBytes

          public static String newStringFromBytes​(byte[] bytes,
                                                  String charsetName,
                                                  int start,
                                                  int length)

      Use this function instead of new String(byte[], int, int, String) to avoid surprises from non-standard default encodings.
      Parameters:
        `bytes` -
        `charsetName` -
        `start` -
        `length` -

    - #### newStringFromBytes

          public static String newStringFromBytes​(byte[] bytes,
                                                  int start,
                                                  int length)

      Use this function instead of new String(byte[], int, int) to avoid surprises from non-standard default encodings.
      Parameters:
        `bytes` -
        `start` -
        `length` -

    - #### copy

          public static int copy​(InputStream input,
                                 OutputStream output)
                          throws IOException

      Throws:
        `IOException`

    - #### copyAndCloseInput

          public static int copyAndCloseInput​(InputStream input,
                                              OutputStream output)
                                       throws IOException

      Throws:
        `IOException`

    - #### copyAndCloseInput

          public static int copyAndCloseInput​(InputStream input,
                                              OutputStream output,
                                              int bufferSize)
                                       throws IOException

      Throws:
        `IOException`

    - #### copyAndCloseInput

          public static void copyAndCloseInput​(Reader input,
                                               Writer output)
                                        throws IOException

      Throws:
        `IOException`

    - #### copyAndCloseInput

          public static void copyAndCloseInput​(Reader input,
                                               Writer output,
                                               int bufferSize)
                                        throws IOException

      Throws:
        `IOException`

    - #### copy

          public static int copy​(InputStream input,
                                 OutputStream output,
                                 int bufferSize)
                          throws IOException

      Throws:
        `IOException`

    - #### copyAtLeast

          public static void copyAtLeast​(InputStream input,
                                         OutputStream output,
                                         int atLeast)
                                  throws IOException

      Copy at least the specified number of bytes from the input to the output or until the inputstream is finished.
      Parameters:
        `input` -
        `output` -
        `atLeast` -
      Throws:
        `IOException`

    - #### copyAtLeast

          public static void copyAtLeast​(Reader input,
                                         Writer output,
                                         int atLeast)
                                  throws IOException

      Throws:
        `IOException`

    - #### copy

          public static void copy​(Reader input,
                                  Writer output,
                                  int bufferSize)
                           throws IOException

      Throws:
        `IOException`

    - #### transferTo

          public static void transferTo​(InputStream inputStream,
                                        File destinationFile)
                                 throws IOException

      Throws:
        `IOException`

    - #### toString

          public static String toString​(InputStream input)
                                 throws IOException

      Throws:
        `IOException`

    - #### toString

          public static String toString​(InputStream input,
                                        String charset)
                                 throws IOException

      Throws:
        `IOException`

    - #### toString

          public static String toString​(InputStream input,
                                        int bufferSize)
                                 throws IOException

      Throws:
        `IOException`

    - #### toString

          public static String toString​(InputStream input,
                                        int bufferSize,
                                        String charset)
                                 throws IOException

      Throws:
        `IOException`

    - #### toString

          public static String toString​(Reader input)
                                 throws IOException

      Throws:
        `IOException`

    - #### toString

          public static String toString​(Reader input,
                                        int bufSize)
                                 throws IOException

      Throws:
        `IOException`

    - #### readStringFromStream

          public static String readStringFromStream​(InputStream in)
                                             throws IOException

      Throws:
        `IOException`

    - #### loadIntoBAIS

          public static ByteArrayInputStream loadIntoBAIS​(InputStream in)
                                                   throws IOException

      Load the InputStream into memory and return a ByteArrayInputStream that represents it. Closes the in stream.
      Parameters:
        `in` -
      Throws:
        `IOException`

    - #### consume

          public static void consume​(InputStream in)
                              throws IOException

      Throws:
        `IOException`

    - #### consume

          public static void consume​(InputStream input,
                                     int atLeast)
                              throws IOException

      Consumes at least the given number of bytes from the input stream
      Parameters:
        `input` -
        `atLeast` -
      Throws:
        `IOException`

    - #### readBytesFromStream

          public static byte[] readBytesFromStream​(InputStream in)
                                            throws IOException

      Throws:
        `IOException`