Signed-off-by: Peter Eriksen <s022018@xxxxxxxxxxxxxx>
---
Documentation/technical/pack-format.txt | 16 +++++++++++++++-
1 files changed, 15 insertions(+), 1 deletions(-)
On Sun, Apr 06, 2008 at 03:07:24PM -0400, Shawn O. Pearce wrote:
...
> You are missing the description that the position within _this_
> packfile is determined by:
>
> offset_of_type_byte - n_byte_offset
>
> The above can still be taken to mean the offset is from the start
> of the packfile or something like that.
Yes, I misunderstood that.
Peter
diff --git a/Documentation/technical/pack-format.txt b/Documentation/technical/pack-format.txt
index aa87756..953c7ee 100644
--- a/Documentation/technical/pack-format.txt
+++ b/Documentation/technical/pack-format.txt
@@ -103,10 +103,24 @@ Pack file entry: <+
packed object data:
If it is not DELTA, then deflated bytes (the size above
is the size before compression).
- If it is DELTA, then
+ If it is REF_DELTA, then
20-byte base object name SHA1 (the size above is the
size of the delta data that follows).
delta data, deflated.
+ If it is OFS_DELTA, then
+ n-byte offset (see below) counted from the type-byte
+ of the header of the ofs-delta entry.
+ (the size above is the size of the delta data
+ that follows).
+ delta data, deflated.
+
+ offset encoding:
+ n bytes with MSB set in all but the last one.
+ The offset is then the number constructed by
+ concatenating the lower 7 bit of each byte, and
+ for n >= 2 adding 2^7 + 2^14 + ... + 2^(7*(n-1))
+ to the result.
+
= Version 2 pack-*.idx files support packs larger than 4 GiB, and
--
1.5.5-rc3.GIT
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