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Merged DEV to HEAD : 54690, 54691 : ACE-2783 - Opening and closing a *.xls and *.ppt files with the CIFS interface(without saving) creates a new version

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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@85530 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Mark Rogers
2014-09-23 16:08:15 +00:00
parent d6f724dea2
commit 85f1e5b819
8 changed files with 256 additions and 44 deletions
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173
source/java/org/alfresco/filesys/repo/CIFSContentComparator.java
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@@ -5,7 +5,6 @@ import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
@@ -18,6 +17,7 @@ import org.alfresco.util.TempFileProvider;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hslf.HSLFSlideShow;
import org.apache.poi.poifs.filesystem.DirectoryEntry;
import org.apache.poi.poifs.filesystem.EntryUtils;
import org.apache.poi.poifs.filesystem.FilteringDirectoryNode;
@@ -50,6 +50,7 @@ public class CIFSContentComparator implements ContentComparator
{
customComparators.put("application/vnd.ms-project", new MPPContentComparator());
customComparators.put("application/vnd.ms-excel", new XLSContentComparator());
customComparators.put("application/vnd.ms-powerpoint", new PPTContentComparator());
}
@Override
@@ -128,6 +129,22 @@ public class CIFSContentComparator implements ContentComparator
}
}
private boolean isContentIdentical(NPOIFSFileSystem fs1, NPOIFSFileSystem fs2, Collection<String> excludes) throws IOException
{
DirectoryEntry de1 = fs1.getRoot();
DirectoryEntry de2 = fs2.getRoot();
FilteringDirectoryNode fs1Filtered = new FilteringDirectoryNode(de1, excludes);
FilteringDirectoryNode fs2Filtered = new FilteringDirectoryNode(de2, excludes);
boolean retVal = EntryUtils.areDirectoriesIdentical(fs1Filtered, fs2Filtered);
if(logger.isDebugEnabled())
{
logger.debug("returning equal="+ retVal);
}
return retVal;
}
// Comparator for MS Project
private class MPPContentComparator implements ContentComparator
{
@@ -162,22 +179,10 @@ public class CIFSContentComparator implements ContentComparator
excludes.add("Props9");
leftIs = existingContent.getContentInputStream();
NPOIFSFileSystem fs2 = new NPOIFSFileSystem(leftIs);
NPOIFSFileSystem fs1 = new NPOIFSFileSystem(newFile);
NPOIFSFileSystem fs1 = new NPOIFSFileSystem(leftIs);
NPOIFSFileSystem fs2 = new NPOIFSFileSystem(newFile);
DirectoryEntry de1 = fs1.getRoot();
DirectoryEntry de2 = fs2.getRoot();
FilteringDirectoryNode fs1Filtered = new FilteringDirectoryNode(de1, excludes);
FilteringDirectoryNode fs2Filtered = new FilteringDirectoryNode(de2, excludes);
boolean retVal = EntryUtils.areDirectoriesIdentical(fs1Filtered, fs2Filtered);
if(logger.isDebugEnabled())
{
logger.debug("returning equal="+ retVal);
}
return retVal;
return isContentIdentical(fs1, fs2, excludes);
}
catch (ContentIOException ce)
{
@@ -241,7 +246,8 @@ public class CIFSContentComparator implements ContentComparator
tpm1 = TempFileProvider.createTempFile("CIFSContentComparator1", "xls");
tpm2 = TempFileProvider.createTempFile("CIFSContentComparator2", "xls");
HSSFWorkbook wb1 = new HSSFWorkbook(existingContent.getContentInputStream());
leftIs = existingContent.getContentInputStream();
HSSFWorkbook wb1 = new HSSFWorkbook(leftIs);
HSSFWorkbook wb2 = new HSSFWorkbook(new FileInputStream(newFile));
wb1.writeProtectWorkbook("", "CIFSContentComparator");
wb2.writeProtectWorkbook("", "CIFSContentComparator");
@@ -249,23 +255,126 @@ public class CIFSContentComparator implements ContentComparator
wb1.write(new FileOutputStream(tpm1));
wb2.write(new FileOutputStream(tpm2));
NPOIFSFileSystem fs1 = new NPOIFSFileSystem(tpm1);
NPOIFSFileSystem fs2 = new NPOIFSFileSystem(tpm2);
NPOIFSFileSystem fs2 = new NPOIFSFileSystem(tpm1);
NPOIFSFileSystem fs1 = new NPOIFSFileSystem(tpm2);
DirectoryEntry de1 = fs1.getRoot();
DirectoryEntry de2 = fs2.getRoot();
FilteringDirectoryNode fs1Filtered = new FilteringDirectoryNode(de1, excludes);
FilteringDirectoryNode fs2Filtered = new FilteringDirectoryNode(de2, excludes);
boolean retVal = EntryUtils.areDirectoriesIdentical(fs1Filtered, fs2Filtered);
if(logger.isDebugEnabled())
return isContentIdentical(fs1, fs2, excludes);
}
catch (ContentIOException ce)
{
logger.debug("Unable to compare contents", ce);
return false;
}
catch (IOException e)
{
logger.debug("Unable to compare contents", e);
return false;
}
finally
{
if(tpm1 != null)
{
try
{
tpm1.delete();
}
catch (Exception e)
{
// ignore
}
}
if(tpm2 != null)
{
try
{
tpm2.delete();
}
catch (Exception e)
{
// ignore
}
}
if(leftIs != null)
{
logger.debug("returning equal="+ retVal);
try
{
leftIs.close();
}
catch (IOException e)
{
// Ignore
}
}
}
}
}
return retVal;
// Comparator for MS PowerPoint
private class PPTContentComparator implements ContentComparator
{
@Override
public boolean isContentEqual(ContentReader existingContent, File newFile)
{
long fileSizesDifference = newFile.length() - existingContent.getSize();
if(logger.isDebugEnabled())
{
logger.debug("comparing two powerpoint files size:" + existingContent.getSize() + ", and " + newFile.length());
}
File tpm1 = null;
File tpm2 = null;
InputStream leftIs = null;
try
{
if(fileSizesDifference != 0)
{
// ALF-18793
// Experience has shown that the size of opened/closed file increases to 3072 bytes.
// (That occurs only in case if the file has been created on one MS PowerPoint instance and opened/closed on another
// due to change of lastEditUsername property (if they are different)).
if (fileSizesDifference > 3072 && fileSizesDifference < 0)
{
logger.debug("powerpoint files are different size");
// Different size
return false;
}
Collection<String> excludes = new HashSet<String>();
leftIs = existingContent.getContentInputStream();
HSLFSlideShow slideShow1 = new HSLFSlideShow(leftIs);
HSLFSlideShow slideShow2 = new HSLFSlideShow(new FileInputStream(newFile));
String lastEditUsername1 = slideShow1.getCurrentUserAtom().getLastEditUsername();
String lastEditUsername2 = slideShow2.getCurrentUserAtom().getLastEditUsername();
if (lastEditUsername1.equals(lastEditUsername2))
{
logger.debug("powerpoint files are different size");
// Different size
return false;
}
else
{
//make sure that nothing has been changed except lastEditUsername
tpm1 = TempFileProvider.createTempFile("CIFSContentComparator1", "ppt");
tpm2 = TempFileProvider.createTempFile("CIFSContentComparator2", "ppt");
slideShow1.write(new FileOutputStream(tpm1));
slideShow1.write(new FileOutputStream(tpm2));
NPOIFSFileSystem fs1 = new NPOIFSFileSystem(tpm1);
NPOIFSFileSystem fs2 = new NPOIFSFileSystem(tpm2);
return isContentIdentical(fs1, fs2, excludes);
}
}
return true;
}
catch (ContentIOException ce)
{
@@ -315,8 +424,4 @@ public class CIFSContentComparator implements ContentComparator
}
}
}
}