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Difference between revisions of "ZIM file format"
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Mgautierfr (talk | contribs) (Change spec description to new namespace usage.) |
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| titlePtrPos || integer || 40 || 8 || position of the directory pointerlist ordered by Title | | titlePtrPos || integer || 40 || 8 || position of the directory pointerlist ordered by Title | ||
This is considered as obsolete, readers should use <code>X/listing/titleordered/v0</code> instead and fallback to <code>titlePtrPos</code> if entry is not present. | This is considered as obsolete, readers should use <code>[[Search indexes#Title index v0|X/listing/titleordered/v0]]</code> instead and fallback to <code>titlePtrPos</code> if entry is not present. | ||
Always valid for now, but it may be set to 0 in the future if <code>titlePtrPos</code> is not present. | Always valid for now, but it may be set to 0 in the future if <code>titlePtrPos</code> is not present. | ||
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The URL pointer list is a list of 8 byte offsets to the directory entries. | The URL pointer list is a list of 8 byte offsets to the directory entries. | ||
The directory entries are always ordered by URL. Ordering is simply done by comparing the URL strings. | The directory entries are always ordered by "full" URL (<code><namespace><path></code>). Ordering is simply done by comparing the URL strings. | ||
Since directory entries have variable sizes this is needed for random access. | Since directory entries have variable sizes this is needed for random access. | ||
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== Title Pointer List (titlePtrPos) == | == Title Pointer List (titlePtrPos) == | ||
The title pointer list is a list of entry indices ordered by title. The title pointer list actually points to entries in the URL pointer list. | The title pointer list is a list of entry indices ordered by title (<code><namespace><title></code>). The title pointer list actually points to entries in the URL pointer list. | ||
Note that the title pointers are only 4 bytes. They are not offsets in the file but entry numbers. | Note that the title pointers are only 4 bytes. They are not offsets in the file but entry numbers. | ||