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  1. Core Server
  2. SERVER-3720

regex match null character

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    • Icon: Improvement Improvement
    • Resolution: Duplicate
    • Icon: Major - P3 Major - P3
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    Description

      I think we are starting to support strings with null characters SERVER-1300. Would be nice if we could match these characters using regular expressions. Not sure if this is supported in pcre though.

      > c.drop()
      true
      > a = 'a\0b';
      ab
      > c.save( {a:a} )
      > c.find( {a:a} )
      { "_id" : ObjectId("4e5c56e5abcf05c6aa443a91"), "a" : "a" }
      > r = new RegExp( 'c|a' )
      /c|a/
      > c.find( {a:r} )
      { "_id" : ObjectId("4e5c56e5abcf05c6aa443a91"), "a" : "a" }
      > r = new RegExp( 'c\0|a' )
      /c|a/
      > c.find( {a:r} )
      > c.save( {a:r} )
      > c.find( {a:r} )
      Mon Aug 29 20:21:01 warning: unknown regex flag:|
      Mon Aug 29 20:21:01 warning: unknown regex flag:a
      { "_id" : ObjectId("4e5c571babcf05c6aa443a92"), "a" : /c/ }
      > 
       
       
      > r = /a\x00/
      /a\x00/
      > a.match(r)
      [ "a\u0000" ]
      > c.find( {a:r} )
      > 
      

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            Unassigned Unassigned
            aaron Aaron Staple
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              Updated:
              Resolved: