[TIKA-2574] Extend PCX detection in tika-mimetypes.xml

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.17
• Component/s: detector
• Assignee: Unassigned
• Reporter: Andreas Meier
• Created: 12/Feb/18 11:17
• Updated: 15/Mar/18 09:51

Description

The matcher for pcx should be reworked to avoid false-positives upon UTF-16LE and UTF-32LE textfiles.

I suggest adding the filler from the header as mentioned in the original pcx specification

 

<mime-type type="image/vnd.zbrush.pcx">
  <acronym>PCX</acronym>
  <_comment>ZSoft Paintbrush PiCture eXchange</_comment>
  <alias type="image/x-pcx"/>
  <alias type="image/x-pc-paintbrush"/>
  <magic priority="40">
  <match value="0x0A" type="string" offset="0">
    <!-- bytes 74 to 128 are blank to fill out 128 byte header. Set all bytes to 0 -->
    <!-- This has to be set to avoid false positives for text/plain;charset=UTF-16LE and text/plain;charset=UTF-32LE -->
    <match value="0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" type="string" offset="74">
      <match value="0x00" type="string" offset="1"/>
      <match value="0x02" type="string" offset="1"/>
      <match value="0x03" type="string" offset="1"/>
      <match value="0x04" type="string" offset="1"/>
      <match value="0x05" type="string" offset="1"/>
    </match>
  </match>
</magic>

<glob pattern="*.pcx"/>

</mime-type>

 
I added some testfiles.

gagravarr Can you please check this?

Issue Links

• links to: http://www.qzx.com/pc-gpe/pcx.txt