Fix bug #50939 - ChartEndObjectRecord is supposed to have 6 bytes at the end, but handle it not

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1082936 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2011-03-18 14:30:47 +00:00
parent d82c5b6336
commit 0055c90bc4
4 changed files with 22 additions and 5 deletions

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@ -34,6 +34,7 @@
<changes>
<release version="3.8-beta2" date="2011-??-??">
<action dev="poi-developers" type="fix">50939 - ChartEndObjectRecord is supposed to have 6 bytes at the end, but handle it not</action>
<action dev="poi-developers" type="add">HMEF - New component which supports TNEF (Transport Neutral Encoding Format), aka winmail.dat</action>
<action dev="poi-developers" type="fix">50313 - support for getting HWPFDocument fields</action>
<action dev="poi-developers" type="fix">50912 - fixed setting named styles to HSSFCells</action>

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@ -33,15 +33,23 @@ public final class ChartEndObjectRecord extends StandardRecord {
private short rt;
private short grbitFrt;
private short iObjectKind;
private byte[] unused;
private byte[] reserved;
public ChartEndObjectRecord(RecordInputStream in) {
rt = in.readShort();
grbitFrt = in.readShort();
iObjectKind = in.readShort();
unused = new byte[6];
in.readFully(unused);
// The spec says that there should be 6 bytes at the
// end, which must be there and must be zero
// However, sometimes Excel forgets them...
reserved = new byte[6];
if(in.available() == 0) {
// They've gone missing...
} else {
// Read the reserved bytes
in.readFully(reserved);
}
}
@Override
@ -60,7 +68,7 @@ public final class ChartEndObjectRecord extends StandardRecord {
out.writeShort(grbitFrt);
out.writeShort(iObjectKind);
// 6 bytes unused
out.write(unused);
out.write(reserved);
}
@Override
@ -71,7 +79,7 @@ public final class ChartEndObjectRecord extends StandardRecord {
buffer.append(" .rt =").append(HexDump.shortToHex(rt)).append('\n');
buffer.append(" .grbitFrt =").append(HexDump.shortToHex(grbitFrt)).append('\n');
buffer.append(" .iObjectKind=").append(HexDump.shortToHex(iObjectKind)).append('\n');
buffer.append(" .unused =").append(HexDump.toHex(unused)).append('\n');
buffer.append(" .reserved =").append(HexDump.toHex(reserved)).append('\n');
buffer.append("[/ENDOBJECT]\n");
return buffer.toString();
}

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@ -2028,4 +2028,12 @@ if(1==2) {
writeOutAndReadBack(wb2);
}
/**
* The spec says that ChartEndObjectRecord has 6 reserved
* bytes on the end, but we sometimes find files without...
*/
public void test50939() throws Exception {
HSSFWorkbook wb = openSample("50939.xls");
assertEquals(2, wb.getNumberOfSheets());
}
}

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