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2548 commits

Author SHA1 Message Date
Junio C Hamano c7eb614c5c Merge branch 'jk/cat-file-batch-optim'
* jk/cat-file-batch-optim:
  Revert "cat-file: split --batch input lines on whitespace"
2013-08-02 09:32:48 -07:00
Junio C Hamano 062aeee8aa Revert "cat-file: split --batch input lines on whitespace"
This reverts commit c334b87b30c1464a1ab563fe1fb8de5eaf0e5bac; the
update assumed that people only used the command to read from
"rev-list --objects" output, whose lines begin with a 40-hex object
name followed by a whitespace, but it turns out that scripts feed
random extended SHA-1 expressions (e.g. "HEAD:$pathname") in which
a whitespace has to be kept.
2013-08-02 09:29:30 -07:00
Junio C Hamano d50cb7569c Merge branch 'ob/typofixes'
* ob/typofixes:
  many small typofixes
2013-08-01 12:01:01 -07:00
Junio C Hamano baa2e93699 Merge branch 'jc/rm-submodule-error-message'
Consolidate two messages phrased subtly differently without a good
reason.

* jc/rm-submodule-error-message:
  builtin/rm.c: consolidate error reporting for removing submodules
2013-08-01 11:57:25 -07:00
Junio C Hamano c2980866b7 Merge branch 'jx/clean-interactive'
* jx/clean-interactive:
  git-clean: implement partial matching for selection
  Documentation/git-clean: fix description for range
2013-08-01 11:52:37 -07:00
Junio C Hamano af77c0b1cf Merge branch 'jk/commit-how-to-abort-cherry-pick'
* jk/commit-how-to-abort-cherry-pick:
  commit: tweak empty cherry pick advice for sequencer
2013-07-31 12:38:23 -07:00
Ondřej Bílka 98e023dea4 many small typofixes
Signed-off-by: Ondřej Bílka <neleai@seznam.cz>
Reviewed-by: Marc Branchaud <marcnarc@xiplink.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-29 12:32:25 -07:00
Jeff King c17592a7a2 commit: tweak empty cherry pick advice for sequencer
When we refuse to make an empty commit, we check whether we
are in a cherry-pick in order to give better advice on how
to proceed. We instruct the user to repeat the commit with
"--allow-empty" to force the commit, or to use "git reset"
to skip it and abort the cherry-pick.

In the case of a single cherry-pick, the distinction between
skipping and aborting is not important, as there is no more
work to be done afterwards.  When we are using the sequencer
to cherry pick a series of commits, though, the instruction
is confusing: does it skip this commit, or does it abort the
rest of the cherry-pick?

It does skip, after which the user can continue the
cherry-pick. This is the right thing to be advising the user
to do, but let's make it more clear what will happen, both
by using the word "skip", and by mentioning that the rest of
the sequence can be continued via "cherry-pick --continue"
(whether we skip or take the commit).

Noticed-by: Ramkumar Ramachandra <artagnon@gmail.com>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-29 08:17:06 -07:00
Junio C Hamano 658ff473cf builtin/rm.c: consolidate error reporting for removing submodules
We have two (not identical) copies of error reporting when
attempting to remove submodules that have their repositories
embedded within them.  Add a helper function so that we do not have
to repeat similar error messages with subtly different wording
without a good reason.

Noticed by Jiang Xin.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-25 23:05:17 -07:00
Junio C Hamano 356df9bd8d Merge branch 'jk/cat-file-batch-optim'
If somebody wants to only know on-disk footprint of an object
without having to know its type or payload size, we can bypass a
lot of code to cheaply learn it.

* jk/cat-file-batch-optim:
  Fix some sparse warnings
  sha1_object_info_extended: pass object_info to helpers
  sha1_object_info_extended: make type calculation optional
  packed_object_info: make type lookup optional
  packed_object_info: hoist delta type resolution to helper
  sha1_loose_object_info: make type lookup optional
  sha1_object_info_extended: rename "status" to "type"
  cat-file: disable object/refname ambiguity check for batch mode
2013-07-24 19:21:21 -07:00
Junio C Hamano 0c544a22f9 Merge branch 'sb/misc-fixes'
Assorted code cleanups and a minor fix.

* sb/misc-fixes:
  diff.c: Do not initialize a variable, which gets reassigned anyway.
  commit: Fix a memory leak in determine_author_info
  daemon.c:handle: Remove unneeded check for null pointer.
2013-07-24 19:20:59 -07:00
Jiang Xin 6083861305 git-clean: implement partial matching for selection
Document for interactive git-clean says: "You also could say `c` or
`clean` above as long as the choice is unique". But it's not true,
because only hotkey `c` and full match (`clean`) could work.

Implement partial matching via find_unique function to make the
document right.

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-24 19:16:51 -07:00
Junio C Hamano 0bde8c0c1e Git 1.8.3.4
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Sync with Git 1.8.3.4
2013-07-22 11:34:25 -07:00
Junio C Hamano 3daafe9403 Merge branch 'jc/name-rev-exact-ref'
Corrects the longstanding sloppiness in the implementation of
name-rev that conflated "we take commit-ish" and "differences
between tags and commits do not matter".

* jc/name-rev-exact-ref:
  describe: fix --contains when a tag is given as input
  name-rev: differentiate between tags and commits they point at
  describe: use argv-array
  name-rev: allow converting the exact object name at the tip of a ref
  name-ref: factor out name shortening logic from name_ref()
2013-07-22 11:24:19 -07:00
Junio C Hamano e683889b75 Merge branch 'es/check-mailmap'
A new command to allow scripts to query the mailmap information.

* es/check-mailmap:
  t4203: test check-mailmap command invocation
  builtin: add git-check-mailmap command
2013-07-22 11:24:14 -07:00
Junio C Hamano 988f98f61f Merge branch 'jx/clean-interactive'
Add "interactive" mode to "git clean".

The early part to refactor relative path related helper functions
looked sensible.

* jx/clean-interactive:
  test: run testcases with POSIX absolute paths on Windows
  test: add t7301 for git-clean--interactive
  git-clean: add documentation for interactive git-clean
  git-clean: add ask each interactive action
  git-clean: add select by numbers interactive action
  git-clean: add filter by pattern interactive action
  git-clean: use a git-add-interactive compatible UI
  git-clean: add colors to interactive git-clean
  git-clean: show items of del_list in columns
  git-clean: add support for -i/--interactive
  git-clean: refactor git-clean into two phases
  write_name{_quoted_relative,}(): remove redundant parameters
  quote_path_relative(): remove redundant parameter
  quote.c: substitute path_relative with relative_path
  path.c: refactor relative_path(), not only strip prefix
  test: add test cases for relative_path
2013-07-22 11:24:11 -07:00
Junio C Hamano c714f9fd8a Merge branch 'hv/config-from-blob'
Allow configuration data to be read from in-tree blob objects,
which would help working in a bare repository and submodule
updates.

* hv/config-from-blob:
  do not die when error in config parsing of buf occurs
  teach config --blob option to parse config from database
  config: make parsing stack struct independent from actual data source
  config: drop cf validity check in get_next_char()
  config: factor out config file stack management
2013-07-22 11:24:09 -07:00
Junio C Hamano d3aeb31dc4 Merge branch 'nd/const-struct-cache-entry'
* nd/const-struct-cache-entry:
  Convert "struct cache_entry *" to "const ..." wherever possible
2013-07-22 11:24:01 -07:00
Junio C Hamano e9f1a6c189 Merge branch 'jk/gcc-function-attributes'
Use the function attributes extension to catch mistakes in use of
our own variadic functions that use NULL sentinel at the end
(i.e. like execl(3)) and format strings (i.e. like printf(3)).

* jk/gcc-function-attributes:
  Add the LAST_ARG_MUST_BE_NULL macro
  wt-status: use "format" function attribute for status_printf
  use "sentinel" function attribute for variadic lists
  add missing "format" function attributes
2013-07-22 11:23:59 -07:00
Junio C Hamano d0b3fa8fd9 Merge branch 'db/show-ref-head'
The "--head" option to "git show-ref" was only to add "HEAD" to the
list of candidate refs to be filtered by the usual rules
(e.g. "--heads" that only show refs under refs/heads).  Change the
meaning of the option to always show "HEAD" regardless of what
filtering will be applied to any other ref (this is a backward
incompatible change, so I may need to add an entry to the Release
Notes).

* db/show-ref-head:
  show-ref: make --head always show the HEAD ref
2013-07-22 11:23:56 -07:00
Junio C Hamano 4ca8ae712c Merge branch 'tr/do-not-call-submodules-subprojects'
* tr/do-not-call-submodules-subprojects:
  show-branch: fix description of --date-order
  apply, entry: speak of submodules instead of subprojects
2013-07-22 11:23:30 -07:00
Junio C Hamano 6a5b9ce5e1 Merge branch 'mm/color-auto-default'
A finishing touch to fix breakage to "add -e" caused by defaulting
ui.color to "auto".

* mm/color-auto-default:
  git add -e: Explicitly specify that patch should have no color
2013-07-22 11:23:10 -07:00
Ondřej Bílka efe6de6e40 update URL to the marc.info mail archive
The name marc.theaimsgroup.com is no longer active, and has
migrated to marc.info.

Signed-off-by: Ondřej Bílka <neleai@seznam.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-22 10:11:18 -07:00
Junio C Hamano 80f074396d Merge branch 'ph/builtin-srcs-are-in-subdir-these-days' into maint
* ph/builtin-srcs-are-in-subdir-these-days:
  fix "builtin-*" references to be "builtin/*"
2013-07-21 22:51:29 -07:00
Andrew Wong 7f3b8c628e git add -e: Explicitly specify that patch should have no color
After 4c7f1819 (make color.ui default to 'auto', 2013-06-10), the
patch file to be edited during 'git add -e' receives all the color
codes.  This is because diffopt.use_color defaults to -1, which
causes want_color to now return 'auto'.

By explicitly setting use_color to 0, we can ensure the diff output
has no color codes in it.

Signed-off-by: Andrew Wong <andrew.kw.w@gmail.com>
Acked-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-19 11:20:28 -07:00
Junio C Hamano e3d4493031 Sync with maint 2013-07-19 11:15:48 -07:00
Stefan Beller 1f976bd03f apply.c::find_name_traditional(): do not initialize len to the line's length
The variable len is set to

    len = strchrnul(line, '\n') - line;

unconditionally 9 lines later, hence we can remove the call to strlen.

Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-19 11:15:17 -07:00
Junio C Hamano 52c19991cb Merge branch 'rs/logical-vs-binary-or' into maint
* rs/logical-vs-binary-or:
  use logical OR (||) instead of binary OR (|) in logical context
2013-07-19 10:42:18 -07:00
Ramsay Jones 9fe3edc47f Add the LAST_ARG_MUST_BE_NULL macro
The sentinel function attribute is not understood by versions of
the gcc compiler prior to v4.0. At present, for earlier versions
of gcc, the build issues 108 warnings related to the unknown
attribute. In order to suppress the warnings, we conditionally
define the LAST_ARG_MUST_BE_NULL macro to provide the sentinel attribute
for gcc v4.0 and newer.

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-19 09:26:15 -07:00
Junio C Hamano adfc1857bd describe: fix --contains when a tag is given as input
"git describe" takes a commit and gives it a name based on tags in
its neighbourhood.  The command does take a commit-ish but when
given a tag that points at a commit, it should dereference the tag
before computing the name for the commit.

As the whole processing is internally delegated to name-rev, if we
unwrap tags down to the underlying commit when invoking name-rev, it
will make the name-rev issue an error message based on the unwrapped
object name (i.e. either 40-hex object name, or "$tag^0") that is
different from what the end-user gave to the command when the commit
cannot be described.  Introduce an internal option --peel-tag to the
name-rev to tell it to unwrap a tag in its input from the command
line.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-18 15:16:23 -07:00
Junio C Hamano 118aa4acff name-rev: differentiate between tags and commits they point at
"git name-rev --stdin" has been fixed to convert an object name that
points at a tag to a refname of the tag.  The codepath to handle its
command line arguments, however, fed the commit that the tag points
at to the underlying naming machinery.

With this fix, you will get this:

    $ git name-rev --refs=tags/\* --name-only $(git rev-parse v1.8.3 v1.8.3^0)
    v1.8.3
    v1.8.3^0

which is the same as what you would get from the fixed "--stdin" variant:

    $ git rev-parse v1.8.3 v1.8.3^0 | git name-rev --refs=tags/\* --name-only
    v1.8.3
    v1.8.3^0

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-18 15:16:23 -07:00
Junio C Hamano 802f878b86 Merge branch 'jk/in-pack-size-measurement'
"git cat-file --batch-check=<format>" is added, primarily to allow
on-disk footprint of objects in packfiles (often they are a lot
smaller than their true size, when expressed as deltas) to be
reported.

* jk/in-pack-size-measurement:
  pack-revindex: radix-sort the revindex
  pack-revindex: use unsigned to store number of objects
  cat-file: split --batch input lines on whitespace
  cat-file: add %(objectsize:disk) format atom
  cat-file: add --batch-check=<format>
  cat-file: refactor --batch option parsing
  cat-file: teach --batch to stream blob objects
  t1006: modernize output comparisons
  teach sha1_object_info_extended a "disk_size" query
  zero-initialize object_info structs
2013-07-18 12:59:41 -07:00
Junio C Hamano 45ed4afabe Merge branch 'jk/maint-clone-shared-no-connectivity-validation'
"git clone -s/-l" is a filesystem level copy and does not offer any
protection against source repository being corrupt.  While the
connectivity validation checks commits and trees being readable, it
made the otherwise instantaneous local modes of clone much more
expensive, without protecting blob data from bitflips.

* jk/maint-clone-shared-no-connectivity-validation:
  clone: drop connectivity check for local clones
2013-07-18 12:48:29 -07:00
Thomas Rast 465cf8ce45 show-branch: fix description of --date-order
The existing description reads as if it somehow applies a filter.
Change it to explain that it is merely about the ordering.

Message-proposed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-18 10:57:01 -07:00
Thomas Rast 42063f95a0 apply, entry: speak of submodules instead of subprojects
There are only four (with some generous rounding) instances in the
current source code where we speak of "subproject" instead of
"submodule".  They are as follows:

* one error message in git-apply and two in entry.c

* the patch format for submodule changes

The latter was introduced in 0478675 (Expose subprojects as special
files to "git diff" machinery, 2007-04-15), apparently before the
terminology was settled.  We can of course not change the patch
format.

Let's at least change the error messages to consistently call them
"submodule".

Signed-off-by: Thomas Rast <trast@inf.ethz.ch>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-18 10:56:06 -07:00
Doug Bell 3f3d0cea61 show-ref: make --head always show the HEAD ref
The docs seem to say that doing

	git show-ref --head --tags

would show both the HEAD ref and all the tag refs. However, doing
both --head and either of --tags or --heads would filter out the HEAD
ref.

Also update the documentation to describe the new behavior and add
tests for the show-ref command.

[jc: Doug did proofread the tests, but it was done by me and bugs in
it are mine].

Signed-off-by: Doug Bell <madcityzen@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-17 17:52:28 -07:00
Junio C Hamano 90360c710c Merge branch 'tr/maint-apply-non-git-patch-parsefix' into maint
"git apply" parsed patches that add new files, generated by programs
other than Git, incorrectly.  This is an old breakage in v1.7.11.

* tr/maint-apply-non-git-patch-parsefix:
  apply: carefully strdup a possibly-NULL name
2013-07-15 10:36:14 -07:00
Junio C Hamano 22fcbc420e Merge branch 'jk/format-patch-from'
"git format-patch" learned "--from[=whom]" option, which sets the
"From: " header to the specified person (or the person who runs the
command, if "=whom" part is missing) and move the original author
information to an in-body From: header as necessary.

* jk/format-patch-from:
  teach format-patch to place other authors into in-body "From"
  pretty.c: drop const-ness from pretty_print_context
2013-07-15 10:28:40 -07:00
Junio C Hamano 9678ee7ba3 Merge branch 'mv/merge-ff-tristate'
The configuration variable "merge.ff" was cleary a tri-state to
choose one from "favor fast-forward when possible", "always create
a merge even when the history could fast-forward" and "do not
create any merge, only update when the history fast-forwards", but
the command line parser did not implement the usual convention of
"last one wins, and command line overrides the configuration"
correctly.

* mv/merge-ff-tristate:
  merge: handle --ff/--no-ff/--ff-only as a tri-state option
2013-07-15 10:28:34 -07:00
Stefan Beller 70a0cc9e5c commit: Fix a memory leak in determine_author_info
The date variable is assigned new memory via xmemdupz and 2 lines later
it is assigned new memory again via xmalloc, but the first assignment
is never freed nor used.

Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-15 09:45:21 -07:00
Eric Sunshine 226ad3482a builtin: add git-check-mailmap command
Introduce command check-mailmap, similar to check-attr and check-ignore,
which allows direct testing of .mailmap configuration.

As plumbing accessible to scripts and other porcelain, check-mailmap
publishes the stable, well-tested .mailmap functionality employed by
built-in Git commands.  Consequently, script authors need not
re-implement .mailmap functionality manually, thus avoiding potential
quirks and behavioral differences.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-13 10:19:37 -07:00
Junio C Hamano 778e4b8903 Merge branch 'ms/remote-tracking-branches-in-doc'
* ms/remote-tracking-branches-in-doc:
  Change "remote tracking" to "remote-tracking"
2013-07-12 12:04:07 -07:00
Junio C Hamano 5b307e95e8 Merge branch 'jk/pull-to-integrate'
* jk/pull-to-integrate:
  pull: change the description to "integrate" changes
  push: avoid suggesting "merging" remote changes
2013-07-12 12:04:06 -07:00
Junio C Hamano 8a6482227c Merge branch 'as/log-output-encoding-in-user-format'
"log --format=" did not honor i18n.logoutputencoding configuration
and this attempts to fix it.

* as/log-output-encoding-in-user-format:
  t4205 (log-pretty-formats): avoid using `sed`
  t6006 (rev-list-format): add tests for "%b" and "%s" for the case i18n.commitEncoding is not set
  t4205, t6006, t7102: make functions better readable
  t4205 (log-pretty-formats): revert back single quotes
  t4041, t4205, t6006, t7102: use iso8859-1 rather than iso-8859-1
  t4205: replace .\+ with ..* in sed commands
  pretty: --format output should honor logOutputEncoding
  pretty: Add failing tests: --format output should honor logOutputEncoding
  t4205 (log-pretty-formats): don't hardcode SHA-1 in expected outputs
  t7102 (reset): don't hardcode SHA-1 in expected outputs
  t6006 (rev-list-format): don't hardcode SHA-1 in expected outputs
2013-07-12 12:04:01 -07:00
Jeff King 5b0864070e sha1_object_info_extended: make type calculation optional
Each caller of sha1_object_info_extended sets up an
object_info struct to tell the function which elements of
the object it wants to get. Until now, getting the type of
the object has always been required (and it is returned via
the return type rather than a pointer in object_info).

This can involve actually opening a loose object file to
determine its type, or following delta chains to determine a
packed file's base type. These effects produce a measurable
slow-down when doing a "cat-file --batch-check" that does
not include %(objecttype).

This patch adds a "typep" query to struct object_info, so
that it can be optionally queried just like size and
disk_size. As a result, the return type of the function is
no longer the object type, but rather 0/-1 for success/error.

As there are only three callers total, we just fix up each
caller rather than keep a compatibility wrapper:

  1. The simpler sha1_object_info wrapper continues to
     always ask for and return the type field.

  2. The istream_source function wants to know the type, and
     so always asks for it.

  3. The cat-file batch code asks for the type only when
     %(objecttype) is part of the format string.

On linux.git, the best-of-five for running:

  $ git rev-list --objects --all >objects
  $ time git cat-file --batch-check='%(objectsize:disk)'

on a fully packed repository goes from:

  real    0m8.680s
  user    0m8.160s
  sys     0m0.512s

to:

  real    0m7.205s
  user    0m6.580s
  sys     0m0.608s

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-12 10:16:36 -07:00
Jeff King 25fba78d36 cat-file: disable object/refname ambiguity check for batch mode
A common use of "cat-file --batch-check" is to feed a list
of objects from "rev-list --objects" or a similar command.
In this instance, all of our input objects are 40-byte sha1
ids. However, cat-file has always allowed arbitrary revision
specifiers, and feeds the result to get_sha1().

Fortunately, get_sha1() recognizes a 40-byte sha1 before
doing any hard work trying to look up refs, meaning this
scenario should end up spending very little time converting
the input into an object sha1. However, since 798c35f
(get_sha1: warn about full or short object names that look
like refs, 2013-05-29), when we encounter this case, we
spend the extra effort to do a refname lookup anyway, just
to print a warning. This is further exacerbated by ca91993
(get_packed_ref_cache: reload packed-refs file when it
changes, 2013-06-20), which makes individual ref lookup more
expensive by requiring a stat() of the packed-refs file for
each missing ref.

With no patches, this is the time it takes to run:

  $ git rev-list --objects --all >objects
  $ time git cat-file --batch-check='%(objectname)' <objects

on the linux.git repository:

  real    1m13.494s
  user    0m25.924s
  sys     0m47.532s

If we revert ca91993, the packed-refs up-to-date check, it
gets a little better:

  real    0m54.697s
  user    0m21.692s
  sys     0m32.916s

but we are still spending quite a bit of time on ref lookup
(and we would not want to revert that patch, anyway, which
has correctness issues).  If we revert 798c35f, disabling
the warning entirely, we get a much more reasonable time:

  real    0m7.452s
  user    0m6.836s
  sys     0m0.608s

This patch does the moral equivalent of this final case (and
gets similar speedups). We introduce a global flag that
callers of get_sha1() can use to avoid paying the price for
the warning.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-12 10:09:56 -07:00
Heiko Voigt 1bc888193e teach config --blob option to parse config from database
This can be used to read configuration values directly from git's
database. For example it is useful for reading to be checked out
.gitmodules files directly from the database.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-12 09:34:57 -07:00
Jeff King c334b87b30 cat-file: split --batch input lines on whitespace
If we get an input line to --batch or --batch-check that
looks like "HEAD foo bar", we will currently feed the whole
thing to get_sha1(). This means that to use --batch-check
with `rev-list --objects`, one must pre-process the input,
like:

  git rev-list --objects HEAD |
  cut -d' ' -f1 |
  git cat-file --batch-check

Besides being more typing and slightly less efficient to
invoke `cut`, the result loses information: we no longer
know which path each object was found at.

This patch teaches cat-file to split input lines at the
first whitespace. Everything to the left of the whitespace
is considered an object name, and everything to the right is
made available as the %(reset) atom. So you can now do:

  git rev-list --objects HEAD |
  git cat-file --batch-check='%(objectsize) %(rest)'

to collect object sizes at particular paths.

Even if %(rest) is not used, we always do the whitespace
split (which means you can simply eliminate the `cut`
command from the first example above).

This whitespace split is backwards compatible for any
reasonable input. Object names cannot contain spaces, so any
input with spaces would have resulted in a "missing" line.
The only input hurt is if somebody really expected input of
the form "HEAD is a fine-looking ref!" to fail; it will now
parse HEAD, and make "is a fine-looking ref!" available as
%(rest).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-12 09:18:42 -07:00
Jeff King a4ac106178 cat-file: add %(objectsize:disk) format atom
This atom is just like %(objectsize), except that it shows
the on-disk size of the object rather than the object's true
size. In other words, it makes the "disk_size" query of
sha1_object_info_extended available via the command-line.

This can be used for rough attribution of disk usage to
particular refs, though see the caveats in the
documentation.

This patch does not include any tests, as the exact numbers
returned are volatile and subject to zlib and packing
decisions. We cannot even reliably guarantee that the
on-disk size is smaller than the object content (though in
general this should be the case for non-trivial objects).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-12 09:18:42 -07:00
Jeff King 93d2a607ba cat-file: add --batch-check=<format>
The `cat-file --batch-check` command can be used to quickly
get information about a large number of objects. However, it
provides a fixed set of information.

This patch adds an optional <format> option to --batch-check
to allow a caller to specify which items they are interested
in, and in which order to output them. This is not very
exciting for now, since we provide the same limited set that
you could already get. However, it opens the door to adding
new format items in the future without breaking backwards
compatibility (or forcing callers to pay the cost to
calculate uninteresting items).

Since the --batch option shares code with --batch-check, it
receives the same feature, though it is less likely to be of
interest there.

The format atom names are chosen to match their counterparts
in for-each-ref. Though we do not (yet) share any code with
for-each-ref's formatter, this keeps the interface as
consistent as possible, and may help later on if the
implementations are unified.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-12 09:18:12 -07:00