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44929 - Improved error handling in HSSFWorkbook when attempting to read a BIFF5 file

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@653117 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Josh Micich 2008-05-03 19:53:38 +00:00
parent 8fb40de628
commit bbe3ee9b4d
3 changed files with 143 additions and 122 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="3.1-beta2" date="2008-05-??">
<action dev="POI-DEVELOPERS" type="fix">44929 - Improved error handling in HSSFWorkbook when attempting to read a BIFF5 file</action>
<action dev="POI-DEVELOPERS" type="fix">44675 - Parameter operand classes (function metadata) required to encode SUM() etc properly. Added parse validation for number of parameters</action>
<action dev="POI-DEVELOPERS" type="fix">44921 - allow Ptg.writeBytes() to be called on relative ref Ptgs (RefN* and AreaN*)</action>
<action dev="POI-DEVELOPERS" type="fix">44914 - Fix/suppress warning message "WARN. Unread n bytes of record 0xNN"</action>

1
src/documentation/content/xdocs/status.xml
View File

@ -34,6 +34,7 @@
<!-- Don't forget to update changes.xml too! -->
<changes>
<release version="3.1-beta2" date="2008-05-??">
<action dev="POI-DEVELOPERS" type="fix">44929 - Improved error handling in HSSFWorkbook when attempting to read a BIFF5 file</action>
<action dev="POI-DEVELOPERS" type="fix">44675 - Parameter operand classes (function metadata) required to encode SUM() etc properly. Added parse validation for number of parameters</action>
<action dev="POI-DEVELOPERS" type="fix">44921 - allow Ptg.writeBytes() to be called on relative ref Ptgs (RefN* and AreaN*)</action>
<action dev="POI-DEVELOPERS" type="fix">44914 - Fix/suppress warning message "WARN. Unread n bytes of record 0xNN"</action>

59
src/java/org/apache/poi/hssf/usermodel/HSSFWorkbook.java
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@ -168,6 +168,42 @@ public class HSSFWorkbook extends POIDocument
this(fs.getRoot(), fs, preserveNodes);
}
/**
* Normally, the Workbook will be in a POIFS Stream
* called "Workbook". However, some weird XLS generators use "WORKBOOK"
*/
private static final String[] WORKBOOK_DIR_ENTRY_NAMES = {
"Workbook", // as per BIFF8 spec
"WORKBOOK",
};
private static String getWorkbookDirEntryName(DirectoryNode directory) {
String[] potentialNames = WORKBOOK_DIR_ENTRY_NAMES;
for (int i = 0; i < potentialNames.length; i++) {
String wbName = potentialNames[i];
try {
directory.getEntry(wbName);
return wbName;
} catch (FileNotFoundException e) {
// continue - to try other options
}
}
// check for previous version of file format
try {
directory.getEntry("Book");
throw new IllegalArgumentException("The supplied spreadsheet seems to be Excel 5.0/7.0 (BIFF5) format. "
+ "POI only supports BIFF8 format (from Excel versions 97/2000/XP/2003)");
} catch (FileNotFoundException e) {
// fall through
}
throw new IllegalArgumentException("The supplied POIFSFileSystem does not contain a BIFF8 'Workbook' entry. "
+ "Is it really an excel file?");
}
/**
* given a POI POIFSFileSystem object, and a specific directory
* within it, read in its Workbook and populate the high and
@ -186,6 +222,8 @@ public class HSSFWorkbook extends POIDocument
throws IOException
{
super(directory, fs);
String workbookName = getWorkbookDirEntryName(directory);
this.preserveNodes = preserveNodes;
// If we're not preserving nodes, don't track the
@ -198,27 +236,8 @@ public class HSSFWorkbook extends POIDocument
sheets = new ArrayList(INITIAL_CAPACITY);
names = new ArrayList(INITIAL_CAPACITY);
// Normally, the Workbook will be in a POIFS Stream
// called "Workbook". However, some wierd XLS generators
// put theirs in one called "WORKBOOK"
String workbookName = "Workbook";
try {
directory.getEntry(workbookName);
// Is the default name
} catch(FileNotFoundException fe) {
// Try the upper case form
try {
workbookName = "WORKBOOK";
directory.getEntry(workbookName);
} catch(FileNotFoundException wfe) {
// Doesn't contain it in either form
throw new IllegalArgumentException("The supplied POIFSFileSystem contained neither a 'Workbook' entry, nor a 'WORKBOOK' entry. Is it really an excel file?");
}
}
// Grab the data from the workbook stream, however
// it happens to be spelt.
// it happens to be spelled.
InputStream stream = directory.createDocumentInputStream(workbookName);
EventRecordFactory factory = new EventRecordFactory();