https://issues.apache.org/bugzilla/show_bug.cgi?id=46443
Summary: property claimed to start before zero, at -512!
Product: POI
Version: 3.5-dev
Platform: PC
OS/Version: Windows XP
Status: NEW
Keywords: ErrorMessage
Severity: normal
Priority: P2
Component: POI Overall
AssignedTo: [email protected]
ReportedBy: [email protected]
I am getting a strange message when I read the paragraphs of a Word file. Here
is the message:
property claimed to start before zero, at -512! Resetting it to zero, and
hoping for the best
Here is my code. It happens on the createion of the new HWPFDocument.
final POIFSFileSystem fileSystem = new POIFSFileSystem(new
FileInputStream(file));
final HWPFDocument document = new HWPFDocument(fileSystem);
The error occurs in org.apache.poi.hwpf.model.PropertyNode in the constructor :
protected PropertyNode(int fcStart, int fcEnd, Object buf)
{
_cpStart = fcStart;
_cpEnd = fcEnd;
_buf = buf;
if(_cpStart < 0) {
System.err.println("A property claimed to start before zero, at " +
_cpStart + "! Resetting it to zero, and hoping for the best");
_cpStart = 0;
}
}
The -512 originates in a calculation done in org.apache.poi.hwpf.model.
CHPFormattedDiskPage, where getStart(x) returns 1536 and fcMin is 2048.
public CHPFormattedDiskPage(byte[] documentStream, int offset, int fcMin,
TextPieceTable tpt)
{
super(documentStream, offset);
for (int x = 0; x < _crun; x++)
{
boolean isUnicode = tpt.isUnicodeAtByteOffset( getStart(x) );
_chpxList.add(new CHPX(getStart(x) - fcMin, getEnd(x) - fcMin,
getGrpprl(x), isUnicode));
}
}
I am using these jars, the latest version available to download using Maven2:
poi-3.5-beta4.jar
poi-scratchpad-3.5-beta4.jar
It still seems to work, but I get a lot of these messages.
NOTE: This message appears in bug 46220 but that bug does not seem to be
related.
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