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read-cache.c: write prefix-compressed names in the index

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Teach the code to write the index in the v4 on-disk format.

Record the format version of the on-disk index we read from in the
index_state, and use the format when writing the new index out.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano
2012-04-04 09:12:43 -07:00
parent 6c9cd161d9
commit 9d227781b6
2 changed files with 58 additions and 10 deletions
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4
cache.h
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@ -105,6 +105,9 @@ struct cache_header {
unsigned int hdr_entries;
};
#define INDEX_FORMAT_LB 2
#define INDEX_FORMAT_UB 4
/*
* The "cache_time" is just the low 32 bits of the
* time. It doesn't matter if it overflows - we only
@ -265,6 +268,7 @@ static inline unsigned int canon_mode(unsigned int mode)
struct index_state {
struct cache_entry **cache;
unsigned int version;
unsigned int cache_nr, cache_alloc, cache_changed;
struct string_list *resolve_undo;
struct cache_tree *cache_tree;