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50 lines
1.3 KiB
50 lines
1.3 KiB
5 years ago
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On disk format of directory (xxx_dir.vpk. data is in xxx_000.vpk, xxx_001.vpk, ...)
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id
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records
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"extension\0" (0 = no more extensions)
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"dir\0" (0 = no more dirs)
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"basefilename\0" (0 = no more files of this extension in this dir)
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orig data file crc
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int16 metadata size
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location in data files for level 0 data (word filenum, ulong offset, ulong fsize)
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location in data files for level 1 data (word filenum, ulong offset, ulong fsize) ..
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-1.
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uint8 metadata[]
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..
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..
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..
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data files
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[x]step0 - class def, format def
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[x]step1 - generator
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[x]step2 - loader
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[ ]step3 - surrounding file monitor tools + ui
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A client of the archive who can't handle their persistent meta data going away (as during
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a reload) can say so, which will cuase their metadata to be copied away at next reload. otherwise,
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a reload will change the address of the meta data and maybe its size/content.
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insert
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case file found:
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find all files in the same data chunk
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load data chunk.
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replace old chunk of data, changing offsets in parts of files that were there.
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replace offset and crc in old dir record
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case file not found
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might need to add new extension
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might need to add new directory
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insert new file entry
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add new data to last chunk
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