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Patch from Daniel Bonniot from bug #56956 - Add a NPOIFSFileSystem constructor with a FileChannel and the read-only option 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1624226 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2014-09-11 08:48:10 +00:00
parent 6ae6f2fcb3
commit e627fa54a2
1 changed files with 23 additions and 2 deletions
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25
src/java/org/apache/poi/poifs/filesystem/NPOIFSFileSystem.java
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@ -153,7 +153,8 @@ public class NPOIFSFileSystem extends BlockStore
* when you're done to have the underlying file closed, as the file is
* kept open during normal operation to read the data out.</p>
*
* @param file the File from which to read the data
* @param file the File from which to read or read/write the data
* @param readOnly whether the POIFileSystem will only be used in read-only mode
*
* @exception IOException on errors reading, or on invalid data
*/
@ -165,7 +166,8 @@ public class NPOIFSFileSystem extends BlockStore
/**
* <p>Creates a POIFSFileSystem from an open <tt>FileChannel</tt>. This uses
* less memory than creating from an <tt>InputStream</tt>.</p>
* less memory than creating from an <tt>InputStream</tt>. The stream will
* be used in read-write mode.</p>
*
* <p>Note that with this constructor, you will need to call {@link #close()}
* when you're done to have the underlying Channel closed, as the channel is
@ -181,6 +183,25 @@ public class NPOIFSFileSystem extends BlockStore
this(channel, null, false, false);
}
/**
* <p>Creates a POIFSFileSystem from an open <tt>FileChannel</tt>. This uses
* less memory than creating from an <tt>InputStream</tt>.</p>
*
* <p>Note that with this constructor, you will need to call {@link #close()}
* when you're done to have the underlying Channel closed, as the channel is
* kept open during normal operation to read the data out.</p>
*
* @param channel the FileChannel from which to read or read/write the data
* @param readOnly whether the POIFileSystem will only be used in read-only mode
*
* @exception IOException on errors reading, or on invalid data
*/
public NPOIFSFileSystem(FileChannel channel, boolean readOnly)
throws IOException
{
this(channel, null, readOnly, false);
}
private NPOIFSFileSystem(FileChannel channel, File srcFile, boolean readOnly, boolean closeChannelOnError)
throws IOException
{