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Bugzilla 47229 - Fixed ExternalNameRecord to handle DDE links 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@777275 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Josh Micich 2009-05-21 21:41:47 +00:00
parent 41ba655c79
commit 262ba29349
4 changed files with 76 additions and 5 deletions
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1
src/documentation/content/xdocs/changes.xml
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@ -37,6 +37,7 @@
<!-- Don't forget to update status.xml too! -->
<release version="3.5-beta6" date="2009-??-??">
<action dev="POI-DEVELOPERS" type="add">47229 - Fixed ExternalNameRecord to handle DDE links</action>
<action dev="POI-DEVELOPERS" type="add">46287 - Control of header and footer extraction in ExcelExtractor / XSSFExcelExtractor</action>
<action dev="POI-DEVELOPERS" type="add">46554 - New ant target "jar-examples"</action>
<action dev="POI-DEVELOPERS" type="add">46161 - Support in XSSF for setGroupColumnCollapsed and setGroupRowCollapsed</action>

1
src/documentation/content/xdocs/status.xml
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@ -34,6 +34,7 @@
<!-- Don't forget to update changes.xml too! -->
<changes>
<release version="3.5-beta6" date="2009-??-??">
<action dev="POI-DEVELOPERS" type="add">47229 - Fixed ExternalNameRecord to handle DDE links</action>
<action dev="POI-DEVELOPERS" type="add">46287 - Control of header and footer extraction in ExcelExtractor / XSSFExcelExtractor</action>
<action dev="POI-DEVELOPERS" type="add">46554 - New ant target "jar-examples"</action>
<action dev="POI-DEVELOPERS" type="add">46161 - Support in XSSF for setGroupColumnCollapsed and setGroupRowCollapsed</action>

46
src/java/org/apache/poi/hssf/record/ExternalNameRecord.java
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@ -17,14 +17,14 @@
package org.apache.poi.hssf.record;
import org.apache.poi.hssf.record.constant.ConstantValueParser;
import org.apache.poi.ss.formula.Formula;
import org.apache.poi.util.LittleEndianByteArrayOutputStream;
import org.apache.poi.util.LittleEndianOutput;
import org.apache.poi.util.StringUtil;
/**
* EXTERNALNAME (0x0023)<p/>
*
*
* @author Josh Micich
*/
public final class ExternalNameRecord extends StandardRecord {
@ -32,7 +32,7 @@ public final class ExternalNameRecord extends StandardRecord {
public final static short sid = 0x0023; // as per BIFF8. (some old versions used 0x223)
private static final int OPT_BUILTIN_NAME = 0x0001;
private static final int OPT_AUTOMATIC_LINK = 0x0002; // m$ doc calls this fWantAdvise
private static final int OPT_AUTOMATIC_LINK = 0x0002; // m$ doc calls this fWantAdvise
private static final int OPT_PICTURE_LINK = 0x0004;
private static final int OPT_STD_DOCUMENT_NAME = 0x0008;
private static final int OPT_OLE_LINK = 0x0010;
@ -46,6 +46,21 @@ public final class ExternalNameRecord extends StandardRecord {
private String field_4_name;
private Formula field_5_name_definition;
/**
* 'rgoper' / 'Last received results of the DDE link'
* (seems to be only applicable to DDE links)<br/>
* Logically this is a 2-D array, which has been flattened into 1-D array here.
*/
private Object[] _ddeValues;
/**
* (logical) number of columns in the {@link #_ddeValues} array
*/
private int _nColumns;
/**
* (logical) number of rows in the {@link #_ddeValues} array
*/
private int _nRows;
/**
* Convenience Function to determine if the name is a built-in name
*/
@ -88,6 +103,11 @@ public final class ExternalNameRecord extends StandardRecord {
+ 2 + field_4_name.length(); // nameLen and name
if(hasFormula()) {
result += field_5_name_definition.getEncodedSize();
} else {
if (_ddeValues != null) {
result += 3; // byte, short
result += ConstantValueParser.getEncodedSize(_ddeValues);
}
}
return result;
}
@ -101,6 +121,12 @@ public final class ExternalNameRecord extends StandardRecord {
StringUtil.putCompressedUnicode(field_4_name, out);
if (hasFormula()) {
field_5_name_definition.serialize(out);
} else {
if (_ddeValues != null) {
out.writeByte(_nColumns-1);
out.writeShort(_nRows-1);
ConstantValueParser.encode(out, _ddeValues);
}
}
}
@ -112,6 +138,16 @@ public final class ExternalNameRecord extends StandardRecord {
short nameLength = in.readShort();
field_4_name = in.readCompressedUnicode(nameLength);
if(!hasFormula()) {
if (!isStdDocumentNameIdentifier() && !isOLELink() && isAutomaticLink()) {
// both need to be incremented
int nColumns = in.readUByte() + 1;
int nRows = in.readShort() + 1;
int totalCount = nRows * nColumns;
_ddeValues = ConstantValueParser.parse(in, totalCount);
_nColumns = nColumns;
_nRows = nRows;
}
if(in.remaining() > 0) {
throw readFail("Some unread data (is formula present?)");
}
@ -127,11 +163,11 @@ public final class ExternalNameRecord extends StandardRecord {
field_5_name_definition = Formula.read(formulaLen, in, nBytesRemaining);
}
/*
* Makes better error messages (while hasFormula() is not reliable)
* Makes better error messages (while hasFormula() is not reliable)
* Remove this when hasFormula() is stable.
*/
private RuntimeException readFail(String msg) {
String fullMsg = msg + " fields: (option=" + field_1_option_flag + " index=" + field_2_index
String fullMsg = msg + " fields: (option=" + field_1_option_flag + " index=" + field_2_index
+ " not_used=" + field_3_not_used + " name='" + field_4_name + "')";
return new RecordFormatException(fullMsg);
}

33
src/testcases/org/apache/poi/hssf/record/TestExternalNameRecord.java
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@ -17,6 +17,8 @@
package org.apache.poi.hssf.record;
import org.apache.poi.util.HexRead;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
/**
@ -102,4 +104,35 @@ public final class TestExternalNameRecord extends TestCase {
TestcaseRecordInputStream.confirmRecordEncoding(0x0023, dataPlainName, enr.serialize());
}
public void testDDELink_bug47229() {
/**
* Hex dump read directly from text of bugzilla 47229
*/
final byte[] dataDDE = HexRead.readFromString(
"E2 7F 00 00 00 00 " +
"37 00 " + // text len
// 010672AT0 MUNI,[RTG_MOODY_UNDERLYING,RTG_SP_UNDERLYING]
"30 31 30 36 37 32 41 54 30 20 4D 55 4E 49 2C " +
"5B 52 54 47 5F 4D 4F 4F 44 59 5F 55 4E 44 45 52 4C 59 49 4E 47 2C " +
"52 54 47 5F 53 50 5F 55 4E 44 45 52 4C 59 49 4E 47 5D " +
// constant array { { "#N/A N.A.", "#N/A N.A.", }, }
" 01 00 00 " +
"02 09 00 00 23 4E 2F 41 20 4E 2E 41 2E " +
"02 09 00 00 23 4E 2F 41 20 4E 2E 41 2E");
ExternalNameRecord enr;
try {
enr = createSimpleENR(dataDDE);
} catch (RecordFormatException e) {
// actual msg reported in bugzilla 47229 is different
// because that seems to be using a version from before svn r646666
if (e.getMessage().startsWith("Some unread data (is formula present?)")) {
throw new AssertionFailedError("Identified bug 47229 - failed to read ENR with OLE/DDE result data");
}
throw e;
}
assertEquals("010672AT0 MUNI,[RTG_MOODY_UNDERLYING,RTG_SP_UNDERLYING]", enr.getText());
TestcaseRecordInputStream.confirmRecordEncoding(0x0023, dataDDE, enr.serialize());
}
}