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From "Bin Hawking (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TIKA-1446) CHM parser : wrong decompression of aligned blocks
Date Sat, 25 Oct 2014 20:26:33 GMT

    [ https://issues.apache.org/jira/browse/TIKA-1446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14184256#comment-14184256

Bin Hawking commented on TIKA-1446:

Hong-Thai Nguyen and all, 

I have 
1. added a test case to validate HTMLs (hhk and hhc also) extracted from testChm*; 
2. removed a try..catch {} which hides some defects; 
3. throw an exception when something overflow or does not work, instead of quitting the method

Then I found more bugs and fixed them, all unit tests passed.

I will push my revision to github later. Once done I will drop a message here. 

> CHM parser : wrong decompression of aligned blocks
> --------------------------------------------------
>                 Key: TIKA-1446
>                 URL: https://issues.apache.org/jira/browse/TIKA-1446
>             Project: Tika
>          Issue Type: Bug
>    Affects Versions: 1.7
>            Reporter: Bin Hawking
>            Priority: Critical
>         Attachments: chm.zip
> If an embedded file contains aligned blocks, the parser outputs chaotic text or empty
text as to this file.
> I have fixed it myself, corrected decompressAlignedBlock() and its preparation methods.
Mostly this bug is due to misusing main tree/align tree/length tree. And some tree is built

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