[PDFBOX-2591] Allow using custom Filters

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Fix Version/s: 2.0.0
• Labels: patch
• Assignee: Unassigned
• Reporter: Daniel Bonniot de Ruisselet
• Created: 07/Jan/15 13:51
• Updated: 09/Jan/15 15:12
• Resolved: 08/Jan/15 21:52

Description

It seems that currently FilterFactory has a hard-coded list of filters, and that there is no way for clients to modify it. This is problematic if you want to replace a built-in Filter by a custom one.

Would this patch be appropriate?

Index: pdfbox/src/main/java/org/apache/pdfbox/filter/FilterFactory.java
===================================================================
--- pdfbox/src/main/java/org/apache/pdfbox/filter/FilterFactory.java    (revision 1650041)
+++ pdfbox/src/main/java/org/apache/pdfbox/filter/FilterFactory.java    (working copy)
@@ -97,6 +97,17 @@
         return filter;
     }
 
+    /**
+     * Set the filter instance to be used for a given filter name.
+     * @param filterName the name of the filter to set
+     * @param filter the filter to use for that name
+     * @return the previous filter that was used for that name
+     */
+    public Filter setFilter(COSName filterName, Filter filter) {
+       Filter previous = filters.put(filterName, filter);
+       return previous;
+    }
+
     // returns all available filters, for testing
     Collection<Filter> getAllFilters()
     {

Issue Links

• is superceded by: PDFBOX-2594 Set default params in JBIG2Filter