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Diffstat (limited to 'Documentation/technical/index-format.txt')
| -rw-r--r-- | Documentation/technical/index-format.txt | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/Documentation/technical/index-format.txt b/Documentation/technical/index-format.txt index 7b233ca196..9d25b30178 100644 --- a/Documentation/technical/index-format.txt +++ b/Documentation/technical/index-format.txt @@ -113,9 +113,22 @@ GIT index format are encoded in 7-bit ASCII and the encoding cannot contain a NUL byte (iow, this is a UNIX pathname). + (Version 4) In version 4, the entry path name is prefix-compressed + relative to the path name for the previous entry (the very first + entry is encoded as if the path name for the previous entry is an + empty string). At the beginning of an entry, an integer N in the + variable width encoding (the same encoding as the offset is encoded + for OFS_DELTA pack entries; see pack-format.txt) is stored, followed + by a NUL-terminated string S. Removing N bytes from the end of the + path name for the previous entry, and replacing it with the string S + yields the path name for this entry. + 1-8 nul bytes as necessary to pad the entry to a multiple of eight bytes while keeping the name NUL-terminated. + (Version 4) In version 4, the padding after the pathname does not + exist. + == Extensions === Cached tree @@ -147,8 +160,9 @@ GIT index format - 160-bit object name for the object that would result from writing this span of index as a tree. - An entry can be in an invalidated state and is represented by having -1 - in the entry_count field. + An entry can be in an invalidated state and is represented by having + -1 in the entry_count field. In this case, there is no object name + and the next entry starts immediately after the newline. The entries are written out in the top-down, depth-first order. The first entry represents the root level of the repository, followed by the |