moparisthebest/poi
1
0
Fork 0
Code Issues Pull Requests Releases 1 Wiki Activity

HWPF in-place write support

Browse Source 
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1756001 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2016-08-11 15:14:04 +00:00
parent f743acc3e3
commit 8c7c45ecca
1 changed files with 33 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
src/scratchpad/src/org/apache/poi/hwpf/HWPFDocument.java
View File

@ -572,12 +572,27 @@ public final class HWPFDocument extends HWPFDocumentCore {
}
/**
* Warning - not currently implemented for HWPF!
* Write out the word file that is represented by this class, to the
* currently open {@link File}, via the writeable {@link POIFSFileSystem}
* it was opened as.
*
* <p>This will fail (with an {@link IllegalStateException} if the
* Document was opened read-only, opened from an {@link InputStream}
* instead of a File, or if this is not the root document. For those cases,
* you must use {@link #write(OutputStream)} or {@link #write(File)} to
* write to a brand new document.
*
* @since 3.15
*/
@Override
public void write() throws IOException {
// TODO Implement
throw new IllegalStateException("Coming soon!");
validateInPlaceWritePossible();
// Update the Document+Properties streams in the file
write(directory.getFileSystem(), false);
// Sync with the File on disk
directory.getFileSystem().writeFilesystem();
}
/**
@ -912,22 +927,18 @@ public final class HWPFDocument extends HWPFDocumentCore {
dataBuf = tempBuf;
}
// create new document preserving order of entries
// TODO Check "copyOtherEntries" and tweak behaviour based on that
// TODO That's needed for in-place write
// Create a new document preserving order of entries / Update existing
boolean docWritten = false;
boolean dataWritten = false;
boolean objectPoolWritten = false;
boolean tableWritten = false;
boolean propertiesWritten = false;
for ( Iterator<Entry> iter = directory.getEntries(); iter.hasNext(); )
{
Entry entry = iter.next();
for (Entry entry : directory) {
if ( entry.getName().equals( STREAM_WORD_DOCUMENT ) )
{
if ( !docWritten )
{
pfs.createDocument( new ByteArrayInputStream( mainBuf ),
pfs.createOrUpdateDocument( new ByteArrayInputStream( mainBuf ),
STREAM_WORD_DOCUMENT );
docWritten = true;
}
@ -936,7 +947,11 @@ public final class HWPFDocument extends HWPFDocumentCore {
{
if ( !objectPoolWritten )
{
_objectPool.writeTo( pfs.getRoot() );
if ( copyOtherEntries ) {
_objectPool.writeTo( pfs.getRoot() );
} else {
// Object pool is already there, no need to change/copy
}
objectPoolWritten = true;
}
}
@ -945,7 +960,7 @@ public final class HWPFDocument extends HWPFDocumentCore {
{
if ( !tableWritten )
{
pfs.createDocument( new ByteArrayInputStream( tableBuf ),
pfs.createOrUpdateDocument( new ByteArrayInputStream( tableBuf ),
STREAM_TABLE_1 );
tableWritten = true;
}
@ -965,29 +980,29 @@ public final class HWPFDocument extends HWPFDocumentCore {
{
if ( !dataWritten )
{
pfs.createDocument( new ByteArrayInputStream( dataBuf ),
pfs.createOrUpdateDocument( new ByteArrayInputStream( dataBuf ),
STREAM_DATA );
dataWritten = true;
}
}
else
else if ( copyOtherEntries )
{
EntryUtils.copyNodeRecursively( entry, pfs.getRoot() );
}
}
if ( !docWritten )
pfs.createDocument( new ByteArrayInputStream( mainBuf ),
pfs.createOrUpdateDocument( new ByteArrayInputStream( mainBuf ),
STREAM_WORD_DOCUMENT );
if ( !tableWritten )
pfs.createDocument( new ByteArrayInputStream( tableBuf ),
pfs.createOrUpdateDocument( new ByteArrayInputStream( tableBuf ),
STREAM_TABLE_1 );
if ( !propertiesWritten )
writeProperties( pfs );
if ( !dataWritten )
pfs.createDocument( new ByteArrayInputStream( dataBuf ),
pfs.createOrUpdateDocument( new ByteArrayInputStream( dataBuf ),
STREAM_DATA );
if ( !objectPoolWritten )
if ( !objectPoolWritten && copyOtherEntries )
_objectPool.writeTo( pfs.getRoot() );
this.directory = pfs.getRoot();