[PDFBOX-581] Avoid warnings for graphics operations when extracting text

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: Text extraction
• Assignee: Jukka Zitting
• Reporter: Jukka Zitting
• Created: 09/Dec/09 09:42
• Updated: 22/Feb/10 18:28
• Resolved: 10/Dec/09 23:44

Description

PDFStreamEngine logs warnings of all encountered PDF operators for which an OperatorProcessor has not explicitly been configured. This is a bit annoying for things like text extraction where many graphics operators can simply be ignored.

To solve this we can either disable the warnings entirely or add an explicit "Ignore" operator processor that simply ignores the selected operators. I'm inclined to implement the latter solution as I think it's a good idea to log warnings for truly unexpected operators.