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https://issues.apache.org/jira/browse/TIKA-2689?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16585552#comment-16585552
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Amit Pandey commented on TIKA-2689:
-----------------------------------
I just added magic detection configuration for ".ai" files in tika-mimetype.xml
same as used for PDF magic detection configuration. It works fine for me, I
tested some basic test cases using PDF and ".ai" files.
Here is the configuration that I used..
<mime-type type="application/illustrator">
<alias type="application/vnd.adobe.illustrator"/>
<acronym>AI</acronym>
<_comment>Adobe Illustrator Artwork</_comment>
<tika:link>http://en.wikipedia.org/wiki/Adobe_Illustrator_Artwork</tika:link>
<magic priority="50">
<!-- Normally just %PDF- -->
<match value="%PDF-" type="string" offset="0"/>
<!-- Sometimes has a UTF-8 Byte Order Mark first -->
<match value="\xef\xbb\xbf%PDF-" type="string" offset="0"/>
</magic>
<magic priority="20">
<!-- Low priority match for %PDF-#.# near the start of the file -->
<!-- Can trigger false positives, so set the priority rather low here -->
<match value="%PDF-1." type="string" offset="1:512"/>
<match value="%PDF-2." type="string" offset="1:512"/>
</magic>
<glob pattern="*.ai"/>]
<sub-class-of type="application/postscript"/>
</mime-type>
Here is the attached "example.ai "[^example.ai]
^Thanks^
^Amit Pandey^
> *.ai type (Adobe illustrator ) files are not detected correctly.
> ----------------------------------------------------------------
>
> Key: TIKA-2689
> URL: https://issues.apache.org/jira/browse/TIKA-2689
> Project: Tika
> Issue Type: Bug
> Components: core
> Affects Versions: 1.16, 1.17, 1.18
> Reporter: Amit Pandey
> Priority: Major
> Attachments: example.ai
>
>
> There is in-consistency in detecting **ai* types files when using different
> overloaded detect method. When I am using _detect(String filename)_, it gives
> correct file type - "*application/illustrator*". If I use _detect(InputStream
> is, String filename)_ or _detect(File fileObj)_ - it gives file type
> "*application/pdf*".
> Here is sample code I used.
>
> [https://stackoverflow.com/questions/51359351/tika-detect-method-not-giving-same-exact-file-type|http://example.com/]
>
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