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Viewing changes to Documentation/technical/pack-format.txt

  • Committer: Package Import Robot
  • Author(s): Gerrit Pape
  • Date: 2007-10-04 08:27:01 UTC
  • mfrom: (1.1.23)
  • Revision ID: package-import@ubuntu.com-20071004082701-rsd058ontoqz4i30
Tags: 1:1.5.3.4-1
http://bugs.debian.org/445188
new upstream point release (closes: #445188).

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Documentation/technical/pack-format.txt
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            +--------------------------------+ |
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main        | offset                         | |
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index       | object name 00XXXXXXXXXXXXXXXX | |
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table       +--------------------------------+ | 
 
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table       +--------------------------------+ |
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            | offset                         | |
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            | object name 00XXXXXXXXXXXXXXXX | |
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            +--------------------------------+ |
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          | +--------------------------------+
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          | | idxfile checksum               |
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          | +--------------------------------+
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          .-------.      
 
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          .-------.
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                  |
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Pack file entry: <+
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     packed object header:
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        1-byte size extension bit (MSB)
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               type (next 3 bit)
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               size0 (lower 4-bit) 
 
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               size0 (lower 4-bit)
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        n-byte sizeN (as long as MSB is set, each 7-bit)
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                size0..sizeN form 4+7+7+..+7 bit integer, size0
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                is the least significant part, and sizeN is the
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                is the size before compression).
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        If it is DELTA, then
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          20-byte base object name SHA1 (the size above is the
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                size of the delta data that follows).
 
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                size of the delta data that follows).
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          delta data, deflated.