PdfFlateInputStream (JHOVE - JSTOR/Harvard Object Validation Environment 1.16.0 API)

java.lang.Object
- java.io.InputStream
- - java.io.FilterInputStream
  - - edu.harvard.hul.ois.jhove.module.pdf.PdfFlateInputStream

All Implemented Interfaces:

Closeable, AutoCloseable
```
public class PdfFlateInputStream
extends FilterInputStream
```
An enhancement of InflaterInputStream to support Predictor and Columns. How complicated does this get? Do I need to read the whole thing before I can "predict" anything?

Author:

Gary McGath

Field Summary
- Fields inherited from class java.io.FilterInputStream
  in

Constructor Summary

Constructors
Constructor and Description
`PdfFlateInputStream(InputStream is)` Constructor with null DecodeParms dictionary
`PdfFlateInputStream(InputStream is, PdfDictionary parms)` Constructor with specified DecodeParms dictionary

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`read()` Reads one byte from the stream.
`int`	`read(byte[] b)` Reads the specified number of bytes into a buffer.
`int`	`read(byte[] b, int off, int len)` Reads the specified number of bytes into a buffer with offset and length specified.
`long`	`skip(long n)`

Methods inherited from class java.io.FilterInputStream
available, close, mark, markSupported, reset

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PdfFlateInputStream
```
public PdfFlateInputStream(InputStream is)
```
    Constructor with null DecodeParms dictionary
    
    Parameters:
    
    is - InputStream to be inflated
  - PdfFlateInputStream
```
public PdfFlateInputStream(InputStream is,
                           PdfDictionary parms)
```
    Constructor with specified DecodeParms dictionary
    
    Parameters:
    
    is - InputStream to be inflated
    
    parms - DecodeParms dictionary. May be null, in which case this is equivalent to the one-parameter constructor.
- Method Detail
  - read
```
public int read()
         throws IOException
```
    Reads one byte from the stream. Returns -1 if end of file is reached.
    
    Overrides:
    
    read in class FilterInputStream
    
    Throws:
    
    IOException
  - read
```
public int read(byte[] b)
         throws IOException
```
    Reads the specified number of bytes into a buffer. Returns the number of bytes actually read, or -1 if end of file has been reached.
    
    Overrides:
    
    read in class FilterInputStream
    
    Throws:
    
    IOException
  - read
```
public int read(byte[] b,
                int off,
                int len)
         throws IOException
```
    Reads the specified number of bytes into a buffer with offset and length specified. Returns -1 if end of file has been reached. No matter how much is requested, this will only return one row's worth of data at most.
    
    Overrides:
    
    read in class FilterInputStream
    
    Throws:
    
    IOException
  - skip
```
public long skip(long n)
          throws IOException
```
    Overrides:
    
    skip in class FilterInputStream
    
    Throws:
    
    IOException

Class PdfFlateInputStream

Field Summary

Fields inherited from class java.io.FilterInputStream

Constructor Summary

Method Summary

Methods inherited from class java.io.FilterInputStream

Methods inherited from class java.lang.Object

Constructor Detail

PdfFlateInputStream

PdfFlateInputStream

Method Detail

read

read

read

skip