Yann's Blog - Software and hardware

August 30, 2009

libevecache: New features and example market cache file to CSV file converter!

Filed under: EVE-Central,Software — Yann @ 8:53 pm

Success!

Thanks to some community contributions, libevecache has grown quite a bit this weekend!

New features include:

  1. Shared object support (will give an object reference in place of the previous holder type)
  2. DBRow decoding (needs more string identifiers for columns in other cache file formats)
  3. The dumper utility now learned about --market, which lets it produce market CSV files from a cache file. 
    atrus@atp (master) :~/Marketlogs/marketreader$ util/dumper --market tests/Lonetrek-Armageddon-2009.07.30\ 062647.cache > o
atrus@atp (master) :~/Marketlogs/marketreader$ cat o
Cache File Dumper 
File: tests/Lonetrek-Armageddon-2009.07.30 062647.cache
price,volRemaining,typeID,range,orderID,volEntered,minVolume,bid,issued,duration,stationID,regionID,solarSystemID,jumps,
54000000.0,1,643,32767,1185915256,5,1,False,2009-07-04 09:01:17.000,90,60004012,10000016,30001363,5
54000000.0,5,643,32767,1187317153,8,1,False,2009-07-06 18:13:31.000,90,60002419,10000016,30001363,5
55499999.0,1,643,32767,1217266843,1,1,False,2009-07-26 17:58:17.000,90,60000838,10000016,30001367,1
...
52749999.0,1,643,32767,1221169229,1,1,False,2009-07-29 18:25:11.000,30,60003838,10000016,30001377,0
57999999.88,1,643,32767,1221534269,2,1,False,2009-07-29 23:31:51.000,90,60002326,10000016,30001429,0
57999999.88,2,643,32767,1221581224,2,1,False,2009-07-30 00:22:49.000,90,60003874,10000016,30001401,0
45720000.0,5,643,40,1173825903,5,1,True,2009-07-05 16:35:12.000,90,60004027,10000016,30001368,0
53999.99,1,643,32767,1190937468,1,1,True,2009-07-06 05:58:44.000,90,60004291,10000016,30001368,0
46956001.5,1,643,3,1212303440,1,1,True,2009-07-22 23:37:54.000,90,60003841,10000016,30001376,0
53784.31,1,643,32767,1131184395,1,1,True,2009-05-21 14:34:50.000,90,60003889,10000016,30001405,0

Update your clones today!

I am going to buckle down and produce an EVE-Central uploader which uses libevecache in the next week. Look for a beta version sometime by Friday.

4 Comments

  1. Thanks so much for working on this and making it public! I’m making a ruby port of this for my own project, and I don’t think I ever would have worked out the rle packing on my own. Thanks!

    Comment by Michael — September 2, 2009 @ 3:09 am

  2. At last!! Many thanks, finally I wont have to push that damn button “export to file” I hate this.

    Comment by silentus — September 2, 2009 @ 9:33 am

  3. Sweet!

    I can’t wait to see the new upload client in action. It will be great to not have to hit the export button for every market lookup.

    Keep up the great work!

    -Serv

    Comment by Servinius — September 2, 2009 @ 9:56 am

  4. Hey Yann.

    I’m trying to rewrite libevecache at pure-ruby. But got stuck at rle_unpack function. Can you provided algorithm description to make an alternative? I’m really poor at C++.
    Best regards, BP.

    Comment by Bubonic Pestilence — December 26, 2009 @ 1:20 pm

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