[ODFTOOLKIT-194] Using ZipFile load ODF Package

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: odfdom-0.8.7
• Component/s: java
• Environment: Operating System: Windows; Platform: PC
• Bugzilla Id: 335
• Assignee: devin
• Reporter: devin
• Created: 11/May/11 05:15
• Updated: 19/Dec/12 06:05

Description

ZipInputStream and ZipFile process ZIP differently. ZipInputStream reads the entries from the start of the file, one by one. This is what is wanted for streaming. ZipFile uses random access to get the ZIP table of contents at the end of the document, and then returns zip entries.

It looks like the problem with Symphony 1.3 files occurs only with ZipInputStream. If I use ZipFile, it works correctly.

Using a ZipFile is more efficient for getting to a specific entry. For example, if you want to get content.xml, a ZipInputStream will require that you process the ZIP file from the start and read each entry until you come to content.xml. With a ZipFile you can call geEntry("content.xml") and it will go directly to that entry, using random access.

I will add a new method OdfPackage.loadPackage(ZipFile pkgFile, String pkgFilePath) in the following patch to realize ZipFile loading.

Devin