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d23748a6af
The new merge world order tells the merge strategies to leave
the cache unmerged and store the automerge result in the working
tree if automerge is not clean. This was done for the resolve
strategy and recursive strategy when no rename is involved, but
recording a conflicting merge in the rename case could not
easily be done by the recursive strategy.
This commit adds a new input format, in addition to the exsting
two, to "update-index --index-info".
(1) mode SP sha1 TAB path
The first format is what "git-apply --index-info"
reports, and used to reconstruct a partial tree
that is used for phony merge base tree when falling
back on 3-way merge.
(2) mode SP type SP sha1 TAB path
The second format is to stuff git-ls-tree output
into the index file.
(3) mode SP sha1 SP stage TAB path
This format is to put higher order stages into the
index file and matches git-ls-files --stage output.
To place a higher stage entry to the index, the path should
first be removed by feeding a mode=0 entry for the path, and
then feeding necessary input lines in the (3) format.
For example, starting with this index:
$ git ls-files -s
100644 8a1218a1024a212bb3db30becd860315f9f3ac52 0 frotz
$ git update-index --index-info ;# interactive session -- input follows...
0 0000000000000000000000000000000000000000 frotz
100644 8a1218a1024a212bb3db30becd860315f9f3ac52 1 frotz
100755 8a1218a1024a212bb3db30becd860315f9f3ac52 2 frotz
The first line of the input feeds 0 as the mode to remove the
path; the SHA1 does not matter as long as it is well formatted.
Then the second and third line feeds stage 1 and stage 2 entries
for that path. After the above, we would end up with this:
$ git ls-files -s
100644 8a1218a1024a212bb3db30becd860315f9f3ac52 1 frotz
100755 8a1218a1024a212bb3db30becd860315f9f3ac52 2 frotz
This completes the groundwork for the new merge world order.
Signed-off-by: Junio C Hamano <junkio@cox.net>
234 lines
6.7 KiB
Plaintext
234 lines
6.7 KiB
Plaintext
git-update-index(1)
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===================
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NAME
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----
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git-update-index - Modifies the index or directory cache
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SYNOPSIS
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--------
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'git-update-index'
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[--add] [--remove | --force-remove] [--replace]
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[--refresh [-q] [--unmerged] [--ignore-missing]]
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[--cacheinfo <mode> <object> <file>]\*
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[--chmod=(+|-)x]
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[--info-only] [--index-info]
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[-z] [--stdin]
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[--verbose]
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[--] [<file>]\*
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DESCRIPTION
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-----------
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Modifies the index or directory cache. Each file mentioned is updated
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into the index and any 'unmerged' or 'needs updating' state is
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cleared.
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The way "git-update-index" handles files it is told about can be modified
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using the various options:
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OPTIONS
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-------
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--add::
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If a specified file isn't in the index already then it's
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added.
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Default behaviour is to ignore new files.
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--remove::
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If a specified file is in the index but is missing then it's
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removed.
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Default behaviour is to ignore removed file.
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--refresh::
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Looks at the current index and checks to see if merges or
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updates are needed by checking stat() information.
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-q::
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Quiet. If --refresh finds that the index needs an update, the
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default behavior is to error out. This option makes
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git-update-index continue anyway.
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--unmerged::
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If --refresh finds unmerged changes in the index, the default
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behavior is to error out. This option makes git-update-index
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continue anyway.
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--ignore-missing::
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Ignores missing files during a --refresh
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--cacheinfo <mode> <object> <path>::
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Directly insert the specified info into the index.
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--index-info::
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Read index information from stdin.
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--chmod=(+|-)x::
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Set the execute permissions on the updated files.
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--info-only::
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Do not create objects in the object database for all
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<file> arguments that follow this flag; just insert
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their object IDs into the index.
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--force-remove::
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Remove the file from the index even when the working directory
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still has such a file. (Implies --remove.)
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--replace::
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By default, when a file `path` exists in the index,
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git-update-index refuses an attempt to add `path/file`.
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Similarly if a file `path/file` exists, a file `path`
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cannot be added. With --replace flag, existing entries
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that conflicts with the entry being added are
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automatically removed with warning messages.
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--stdin::
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Instead of taking list of paths from the command line,
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read list of paths from the standard input. Paths are
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separated by LF (i.e. one path per line) by default.
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--verbose::
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Report what is being added and removed from index.
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-z::
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Only meaningful with `--stdin`; paths are separated with
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NUL character instead of LF.
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--::
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Do not interpret any more arguments as options.
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<file>::
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Files to act on.
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Note that files beginning with '.' are discarded. This includes
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`./file` and `dir/./file`. If you don't want this, then use
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cleaner names.
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The same applies to directories ending '/' and paths with '//'
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Using --refresh
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---------------
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'--refresh' does not calculate a new sha1 file or bring the index
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up-to-date for mode/content changes. But what it *does* do is to
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"re-match" the stat information of a file with the index, so that you
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can refresh the index for a file that hasn't been changed but where
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the stat entry is out of date.
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For example, you'd want to do this after doing a "git-read-tree", to link
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up the stat index details with the proper files.
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Using --cacheinfo or --info-only
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--------------------------------
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'--cacheinfo' is used to register a file that is not in the
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current working directory. This is useful for minimum-checkout
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merging.
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To pretend you have a file with mode and sha1 at path, say:
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----------------
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$ git-update-index --cacheinfo mode sha1 path
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----------------
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'--info-only' is used to register files without placing them in the object
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database. This is useful for status-only repositories.
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Both '--cacheinfo' and '--info-only' behave similarly: the index is updated
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but the object database isn't. '--cacheinfo' is useful when the object is
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in the database but the file isn't available locally. '--info-only' is
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useful when the file is available, but you do not wish to update the
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object database.
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Using --index-info
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------------------
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`--index-info` is a more powerful mechanism that lets you feed
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multiple entry definitions from the standard input, and designed
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specifically for scripts. It can take inputs of three formats:
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. mode SP sha1 TAB path
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+
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The first format is what "git-apply --index-info"
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reports, and used to reconstruct a partial tree
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that is used for phony merge base tree when falling
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back on 3-way merge.
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. mode SP type SP sha1 TAB path
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+
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The second format is to stuff git-ls-tree output
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into the index file.
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. mode SP sha1 SP stage TAB path
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+
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This format is to put higher order stages into the
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index file and matches git-ls-files --stage output.
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To place a higher stage entry to the index, the path should
|
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first be removed by feeding a mode=0 entry for the path, and
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then feeding necessary input lines in the third format.
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For example, starting with this index:
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------------
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$ git ls-files -s
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100644 8a1218a1024a212bb3db30becd860315f9f3ac52 0 frotz
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------------
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you can feed the following input to `--index-info`:
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------------
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$ git update-index --index-info
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0 0000000000000000000000000000000000000000 frotz
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100644 8a1218a1024a212bb3db30becd860315f9f3ac52 1 frotz
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100755 8a1218a1024a212bb3db30becd860315f9f3ac52 2 frotz
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------------
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The first line of the input feeds 0 as the mode to remove the
|
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path; the SHA1 does not matter as long as it is well formatted.
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Then the second and third line feeds stage 1 and stage 2 entries
|
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for that path. After the above, we would end up with this:
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------------
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$ git ls-files -s
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100644 8a1218a1024a212bb3db30becd860315f9f3ac52 1 frotz
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100755 8a1218a1024a212bb3db30becd860315f9f3ac52 2 frotz
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------------
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Examples
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--------
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To update and refresh only the files already checked out:
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----------------
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$ git-checkout-index -n -f -a && git-update-index --ignore-missing --refresh
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----------------
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Configuration
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-------------
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The command honors `core.filemode` configuration variable. If
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your repository is on an filesystem whose executable bits are
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unreliable, this should be set to 'false' (see gitlink:git-repo-config[1]).
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This causes the command to ignore differences in file modes recorded
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in the index and the file mode on the filesystem if they differ only on
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executable bit. On such an unfortunate filesystem, you may
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need to use `git-update-index --chmod=`.
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See Also
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--------
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gitlink:git-repo-config[1]
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Author
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------
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Written by Linus Torvalds <torvalds@osdl.org>
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Documentation
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--------------
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Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
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GIT
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---
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Part of the gitlink:git[7] suite
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