49 lines
1.8 KiB
Markdown
49 lines
1.8 KiB
Markdown
# Object format
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Objects are stored for each mod. Each object consists of a custom binary diff-style format(where numbers are little-endian unless otherwise noted):
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```
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0x0B7D1FF0: Magic number
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0x00000001: 32-bit version. By convention, unofficial object formats should have the left-most(commonly referred to as the 31st bit) set.
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0x0000000000000007: 64-bit number of entries
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0x0000000067D9F179: 64-bit unix timestamp of the mod's creation in seconds
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0x182E06194DB125D7: 64-bit unix timestamp(in nanoseconds) of the object's creation
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0x0000000000000000: 64-bit unix timestamp(in nanoseconds) of the previous object's creation or 0 if no there is no previous object
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0x000000000000000000000000000000000000000000000000: Padding
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0xCF83E1357EEFB8BDF1542850D66D8007D620E4050B5715DC83F4A921D36CE9CE47D0D13C5D85F2B0FF8318D2877EEC2F63B931BD47417A81A538327AF927DA3E: SHA512 hash of object with hash replaced with this hash(the SHA512 hash of an empty string)
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0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000: Same as hash above but of previous object, or 0 if no previous object.
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(entries)
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```
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Each entry is in the format:
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```
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0x0000000000000007: 64-bit size of path in bytes
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0x0000000000000008: Number of diffs
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0x00: Type of change: 0=Removal of file(no diffs), 1=Modification or addition
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(path as a UTF-8 encoded string using UNIX conventions such as a forward slash / as a separator)
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(diffs)
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```
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Each diff is in the format:
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```
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0x00: Type of change: 0=Removal(no body), 1=Insertion, 2=Replacement
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0x00000000000000: Padding
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0x0000000000000000: Start of change (relative to original file)
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0x0000000000000010: Length of change
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(body)
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```
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Known versions:
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|32-bit value|Name|
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|-----|-----|
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|0x00000000|Version from before version 0.1|
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|0x00000001|Official venus version 0.1(this doc)|
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