Attachment 2210 Details for Bug 2804 – the format

the format

mimecache.txt (text/plain), 2.03 KB, created by Matthias Clasen on 2005-03-24 22:31:49 UTC

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Creator: Matthias Clasen

Created: 2005-03-24 22:31:49 UTC

Size: 2.03 KB

patch

obsolete

>Header:
>2			CARD16		MAJOR_VERSION	1	
>2			CARD16		MINOR_VERSION	0	
>4			CARD32		ALIAS_LIST_OFFSET
>4			CARD32		PARENT_LIST_OFFSET
>4			CARD32		LITERAL_LIST_OFFSET
>4			CARD32		SUFFIX_LIST_OFFSET
>4			CARD32		GLOB_LIST_OFFSET
>4			CARD32		MAGIC_LIST_OFFSET
>
>AliasList:
>4			CARD32		N_ALIASES
>8*N_ALIASES		AliasListEntry
>
>AliasListEntry:
>4			CARD32		ALIAS_OFFSET
>4			CARD32		MIME_TYPE_OFFSET
>
>ParentList:
>4			CARD32		N_ENTRIES 
>8*N_ENTRIES		ParentListEntry
>
>ParentListEntry:
>4			CARD32		MIME_TYPE_OFFSET
>4			CARD32		PARENTS_OFFSET
>
>Parents:
>4			CARD32		N_PARENTS
>4*N_PARENTS		CARD32		MIME_TYPE_OFFSET
>
>LiteralList:
>4			CARD32		N_LITERALS
>8*N_LITERALS		LiteralEntry	
>
>LiteralEntry:
>4			CARD32		LITERAL_OFFSET
>4			CARD32		MIME_TYPE_OFFSET
>
>GlobList:
>4			CARD32		N_GLOBS
>8*N_GLOBS		GlobEntry	
>
>GlobEntry:
>4			CARD32		GLOB_OFFSET
>4			CARD32		MIME_TYPE_OFFSET
>
>SuffixTree:
>4			CARD32		N_ROOTS
>4	 		CARD32		FIRST_ROOT_OFFSET
>
>SuffixTreeNode:
>4			CARD32		CHARACTER
>4			CARD32		MIME_TYPE_OFFSET
>4			CARD32		N_CHILDREN			
>4			CARD32		FIRST_CHILD_OFFSET
>
>MagicList:
>4			CARD32		N_MATCHES
>4			CARD32		MAX_EXTENT
>4			CARD32		FIRST_MATCH_OFFSET
>
>Match:
>4			CARD32		PRIORITY
>4			CARD32		MIME_TYPE_OFFSET
>4			CARD32		N_MATCHLETS
>4			CARD32		FIRST_MATCHLET_OFFSET
>
>Matchlet:
>4			CARD32		RANGE_START
>4			CARD32		RANGE_LENGTH
>4			CARD32		WORD_SIZE
>4			CARD32		VALUE_LENGTH
>4			CARD32		VALUE
>4			CARD32		MASK
>4			CARD32		N_CHILDREN
>4			CARD32		FIRST_CHILD_OFFSET
>
>
>Notes:
>
>* The list of aliases is sorted by alias, the list of 
>  literal globs is sorted by the literal. The SuffixTreeNode
>  siblings are sorted by character.
>
>* All offsets are in bytes from he beginning of the file
>
>* Strings are zero-terminated
>
>* All numbers are in network (big-endian) order. This is
>  necessary because the data will be stored in arch-independent
>  directories like /usr/share/mime or even in user's 
>  home directories.
>
>* Cache files have to be written atomically - write to a
>  temporary name, then move over the old file - so that
>  clients that have the old cache file open and mmap'ed
>  won't get corrupt data.
>
>

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Attachments on bug 2804: 2210 | 2212 | 2260 | 2261 | 2281

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