transport: convert get_refs_list to take a list of ref prefixes
Convert the 'struct transport' virtual function 'get_refs_list()' to
optionally take an argv_array of ref prefixes. When communicating with
a server using protocol v2 these ref prefixes can be sent when
requesting a listing of their refs allowing the server to filter the
refs it sends based on the sent prefixes. This list will be ignored
when not using protocol v2.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Introduce the ls-refs server command. In protocol v2, the ls-refs
command is used to request the ref advertisement from the server. Since
it is a command which can be requested (as opposed to mandatory in v1),
a client can sent a number of parameters in its request to limit the ref
advertisement based on provided ref-prefixes.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Introduce git-serve, the base server for protocol version 2.
Protocol version 2 is intended to be a replacement for Git's current
wire protocol. The intention is that it will be a simpler, less
wasteful protocol which can evolve over time.
Protocol version 2 improves upon version 1 by eliminating the initial
ref advertisement. In its place a server will export a list of
capabilities and commands which it supports in a capability
advertisement. A client can then request that a particular command be
executed by providing a number of capabilities and command specific
parameters. At the completion of a command, a client can request that
another command be executed or can terminate the connection by sending a
flush packet.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Once protocol_v2 is introduced requesting a fetch or a push will need to
be handled differently depending on the protocol version. Store the
protocol version the server is speaking in 'struct git_transport_data'
and use it to determine what to do in the case of a fetch or a push.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
connect: discover protocol version outside of get_remote_heads
In order to prepare for the addition of protocol_v2 push the protocol
version discovery outside of 'get_remote_heads()'. This will allow for
keeping the logic for processing the reference advertisement for
protocol_v1 and protocol_v0 separate from the logic for protocol_v2.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
connect: convert get_remote_heads to use struct packet_reader
In order to allow for better control flow when protocol_v2 is introduced
convert 'get_remote_heads()' to use 'struct packet_reader' to read
packet lines. This enables a client to be able to peek the first line
of a server's response (without consuming it) in order to determine the
protocol version its speaking and then passing control to the
appropriate handler.
This is needed because the initial response from a server speaking
protocol_v0 includes the first ref, while subsequent protocol versions
respond with a version line. We want to be able to read this first line
without consuming the first ref sent in the protocol_v0 case so that the
protocol version the server is speaking can be determined outside of
'get_remote_heads()' in a future patch.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove code duplication and use the existing 'get_refs_via_connect()'
function to retrieve a remote's heads in 'fetch_refs_via_pack()' and
'git_transport_push()'.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Factor out the logic for processing shallow, deepen, deepen_since, and
deepen_not lines into their own functions to simplify the
'receive_needs()' function in addition to making it easier to reuse some
of this logic when implementing protocol_v2.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
One of the design goals of protocol-v2 is to improve the semantics of
flush packets. Currently in protocol-v1, flush packets are used both to
indicate a break in a list of packet lines as well as an indication that
one side has finished speaking. This makes it particularly difficult
to implement proxies as a proxy would need to completely understand git
protocol instead of simply looking for a flush packet.
To do this, introduce the special deliminator packet '0001'. A delim
packet can then be used as a deliminator between lists of packet lines
while flush packets can be reserved to indicate the end of a response.
Documentation for how this packet will be used in protocol v2 will
included in a future patch.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
pkt-line: allow peeking a packet line without consuming it
Sometimes it is advantageous to be able to peek the next packet line
without consuming it (e.g. to be able to determine the protocol version
a server is speaking). In order to do that introduce 'struct
packet_reader' which is an abstraction around the normal packet reading
logic. This enables a caller to be able to peek a single line at a time
using 'packet_reader_peek()' and having a caller consume a line by
calling 'packet_reader_read()'.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The current pkt-line API encodes the status of a pkt-line read in the
length of the read content. An error is indicated with '-1', a flush
with '0' (which can be confusing since a return value of '0' can also
indicate an empty pkt-line), and a positive integer for the length of
the read content otherwise. This doesn't leave much room for allowing
the addition of additional special packets in the future.
To solve this introduce 'packet_read_with_status()' which reads a packet
and returns the status of the read encoded as an 'enum packet_status'
type. This allows for easily identifying between special and normal
packets as well as errors. It also enables easily adding a new special
packet in the future.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git describe" was taught to dig trees deeper to find a
<commit-ish>:<path> that refers to a given blob object.
* sb/describe-blob:
builtin/describe.c: describe a blob
builtin/describe.c: factor out describe_commit
builtin/describe.c: print debug statements earlier
builtin/describe.c: rename `oid` to avoid variable shadowing
revision.h: introduce blob/tree walking in order of the commits
list-objects.c: factor out traverse_trees_and_blobs
t6120: fix typo in test name
"git merge" learned to pay attention to merge.verifySignatures
configuration variable and pretend as if '--verify-signatures'
option was given from the command line.
* hi/merge-verify-sig-config:
t5573, t7612: clean up after unexpected success of 'pull' and 'merge'
t: add tests for pull --verify-signatures
merge: add config option for verifySignatures
Error messages from "git rebase" have been somewhat cleaned up.
* ks/rebase-error-messages:
rebase: rebasing can also be done when HEAD is detached
rebase: distinguish user input by quoting it
rebase: consistently use branch_name variable
Introduce a helper to simplify code to parse a common pattern that
expects either "--key" or "--key=<something>".
* cc/skip-to-optional-val:
t4045: reindent to make helpers readable
diff: add tests for --relative without optional prefix value
diff: use skip_to_optional_arg_default() in parsing --relative
diff: use skip_to_optional_arg_default()
diff: use skip_to_optional_arg()
index-pack: use skip_to_optional_arg()
git-compat-util: introduce skip_to_optional_arg()
* sg/travis-fixes:
travis-ci: use 'set -x' in 'ci/*' scripts for extra tracing output
travis-ci: set GIT_TEST_HTTPD in 'ci/lib-travisci.sh'
travis-ci: move setting environment variables to 'ci/lib-travisci.sh'
travis-ci: introduce a $jobname variable for 'ci/*' scripts
* bw/submodule-sans-cache-compat:
submodule: convert get_next_submodule to not rely on the_index
submodule: used correct index in is_staging_gitmodules_ok
submodule: convert stage_updated_gitmodules to take a struct index_state
* ks/branch-cleanup:
builtin/branch: strip refs/heads/ using skip_prefix
branch: update warning message shown when copying a misnamed branch
branch: group related arguments of create_branch()
branch: improve documentation and naming of create_branch() parameters
With a configuration variable rebase.abbreviateCommands set,
"git rebase -i" produces the todo list with a single-letter
command names.
* lb/rebase-i-short-command-names:
sequencer.c: drop 'const' from function return type
t3404: add test case for abbreviated commands
rebase -i: learn to abbreviate command names
rebase -i -x: add exec commands via the rebase--helper
rebase -i: update functions to use a flags parameter
rebase -i: replace reference to sha1 with oid
rebase -i: refactor transform_todo_ids
rebase -i: set commit to null in exec commands
Documentation: use preferred name for the 'todo list' script
Documentation: move rebase.* configs to new file
In preparation for implementing narrow/partial clone, the object
walking machinery has been taught a way to tell it to "filter" some
objects from enumeration.
* jh/object-filtering:
rev-list: support --no-filter argument
list-objects-filter-options: support --no-filter
list-objects-filter-options: fix 'keword' typo in comment
pack-objects: add list-objects filtering
rev-list: add list-objects filtering support
list-objects: filter objects in traverse_commit_list
oidset: add iterator methods to oidset
oidmap: add oidmap iterator methods
dir: allow exclusions from blob in addition to file
sequencer.c: drop 'const' from function return type
With -Werror=ignored-qualifiers, a function that claims to return
"const char" gets this error:
CC sequencer.o
sequencer.c:798:19: error: type qualifiers ignored on function return
type [-Werror=ignored-qualifiers]
static const char command_to_char(const enum todo_command command)
^
Reported-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t5573, t7612: clean up after unexpected success of 'pull' and 'merge'
The previous steps added test_when_finished to tests that run 'git
pull' or 'git merge' with expectation of success, so that the test
after them can start from a known state even when their 'git pull'
invocation unexpectedly fails. However, tests that run 'git pull'
or 'git merge' expecting it not to succeed forgot to protect later
tests the same way---if they unexpectedly succeed, the test after
them would start from an unexpected state.
Reset and checkout the initial commit after all these tests, whether
they expect their invocations to succeed or fail.
Git shows a message to tell the user that it is waiting for the
user to finish editing when spawning an editor, in case the editor
opens to a hidden window or somewhere obscure and the user gets
lost.
* ls/editor-waiting-message:
launch_editor(): indicate that Git waits for user input
refactor "dumb" terminal determination
Ancient part of codebase still shows dots after an abbreviated
object name just to show that it is not a full object name, but
these ellipses are confusing to people who newly discovered Git
who are used to seeing abbreviated object names and find them
confusing with the range syntax.
* ar/unconfuse-three-dots:
t2020: test variations that matter
t4013: test new output from diff --abbrev --raw
diff: diff_aligned_abbrev: remove ellipsis after abbreviated SHA-1 value
t4013: prepare for upcoming "diff --raw --abbrev" output format change
checkout: describe_detached_head: remove ellipsis after committish
print_sha1_ellipsis: introduce helper
Documentation: user-manual: limit usage of ellipsis
Documentation: revisions: fix typo: "three dot" ---> "three-dot" (in line with "two-dot").
The way "git worktree add" determines what branch to create from
where and checkout in the new worktree has been updated a bit.
* tg/worktree-create-tracking:
add worktree.guessRemote config option
worktree: add --guess-remote flag to add subcommand
worktree: make add <path> <branch> dwim
worktree: add --[no-]track option to the add subcommand
worktree: add can be created from any commit-ish
checkout: factor out functions to new lib file
The code internal to the recursive merge strategy was not fully
prepared to see a path that is renamed to try overwriting another
path that is only different in case on case insensitive systems.
This does not matter in the current code, but will start to matter
once the rename detection logic starts taking hints from nearby
paths moving to some directory and moves a new path along with them.
Historically, the diff machinery for rename detection had a
hardcoded limit of 32k paths; this is being lifted to allow users
trade cycles with a (possibly) easier to read result.
* en/rename-progress:
diffcore-rename: make diff-tree -l0 mean -l<large>
sequencer: show rename progress during cherry picks
diff: remove silent clamp of renameLimit
progress: fix progress meters when dealing with lots of work
sequencer: warn when internal merge may be suboptimal due to renameLimit
Sometimes users are given a hash of an object and they want to
identify it further (ex.: Use verify-pack to find the largest blobs,
but what are these? or [1])
When describing commits, we try to anchor them to tags or refs, as these
are conceptually on a higher level than the commit. And if there is no ref
or tag that matches exactly, we're out of luck. So we employ a heuristic
to make up a name for the commit. These names are ambiguous, there might
be different tags or refs to anchor to, and there might be different
path in the DAG to travel to arrive at the commit precisely.
When describing a blob, we want to describe the blob from a higher layer
as well, which is a tuple of (commit, deep/path) as the tree objects
involved are rather uninteresting. The same blob can be referenced by
multiple commits, so how we decide which commit to use? This patch
implements a rather naive approach on this: As there are no back pointers
from blobs to commits in which the blob occurs, we'll start walking from
any tips available, listing the blobs in-order of the commit and once we
found the blob, we'll take the first commit that listed the blob. For
example
rebase: rebasing can also be done when HEAD is detached
Attempting to rebase when the HEAD is detached and is already
up to date with upstream (so there's nothing to do), the
following message is shown
Current branch HEAD is up to date.
which is clearly wrong as HEAD is not a branch.
Handle the special case of HEAD correctly to give a more precise
error message.
Signed-off-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The variable "branch_name" holds the <branch> parameter in "git
rebase <upstream> <branch>", but one codepath did not use it after
assigning $1 to it (instead it kept using $1). Make it use the
variable consistently.
Also, update an error message to say there is no such branch or
commit, as we are expecting either of them, and not limiting
ourselves to a branch name.
Signed-off-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Doc/check-ref-format: clarify information about @{-N} syntax
When the N-th previous thing checked out syntax (@{-N}) is used
with '--branch' option of check-ref-format the result may not be
the name of a branch that currently exists or ever existed. This
is because @{-N} is used to refer to the N-th last checked out
"thing", which might be a commit object name if the previous check
out was a detached HEAD state; or a branch name, otherwise. The
documentation thus does a wrong thing by promoting it as the
"previous branch syntax".
State that @{-N} is the syntax for specifying "N-th last thing
checked out" and also state that the result of using @{-N} might
also result in an commit object name.
Signed-off-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The return code of command -v with a non-existing command is 1 in bash
and 127 in dash. Use that return code directly to allow the script to
work with dash and without watchman (e.g. on Debian).
While at it stop redirecting the output. stderr is redirected to
/dev/null by test_lazy_prereq already, and stdout can actually be
useful -- the path of the found watchman executable is sent there, but
it's shown only if the script was run with --verbose.
Signed-off-by: Rene Scharfe <l.s.r@web.de> Acked-by: Ben Peart <benpeart@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
curl_easy_perform() failed: URL using bad/illegal format or missing URL
This is a consequence of not URI-encoding the folder portion of
the URL which contains characters such as '[' which are not
allowed in a URI. According to RFC3986, these characters should be
URI-encoded.
So, URI-encode the folder before adding it to the URI to ensure it doesn't
contain characters that aren't allowed in a URI.
Reported-by: Doron Behar <doron.behar@gmail.com> Signed-off-by: Nicolas Morey-Chaisemartin <NMoreyChaisemartin@suse.com> Signed-off-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
version --build-options: report commit, too, if possible
In particular when local tags are used (or tags that are pushed to some
fork) to build Git, it is very hard to figure out from which particular
revision a particular Git executable was built. It gets worse when those
tags are deleted, or even updated.
Let's just report an exact, unabbreviated commit name in our build
options.
We need to be careful, though, to report when the current commit cannot
be determined, e.g. when building from a tarball without any associated
Git repository. This could be the case also when extracting Git's source
code into an unrelated Git worktree.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
It can be helpful for bug reports to include information about the
environment in which the bug occurs. "git version --build-options" can
help to supplement this information. In addition to the size of 'long'
already reported by --build-options, also report the host's CPU type.
Example output:
$ git version --build-options
git version 2.9.3.windows.2.826.g06c0f2f
cpu: x86_64
sizeof-long: 4
New Makefile variable HOST_CPU supports cross-compiling.
Suggested-by: Adric Norris <landstander668@gmail.com> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move the definition of the transport-specific functions provided by
transports, whether declared in transport.c or transport-helper.c, into
an internal header. This means that transport-using code (as opposed to
transport-declaring code) can no longer access these functions (without
importing the internal header themselves), making it clear that they
should use the transport_*() functions instead, and also allowing the
interface between the transport mechanism and an individual transport to
independently evolve.
This is superficially a reversal of commit 824d5776c3f2 ("Refactor
struct transport_ops inlined into struct transport", 2007-09-19).
However, the scope of the involved variables was neither affected nor
discussed in that commit, and I think that the advantages in making
those functions more private outweigh the advantages described in that
commit's commit message. A minor additional point is that the code has
gotten more complicated since then, in that the function-pointer
variables are potentially mutated twice (once initially and once if
transport_take_over() is invoked), increasing the value of corralling
them into their own struct.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Prior to commit a2d725b7bdf7 ("Use an external program to implement
fetching with curl", 2009-08-05), if Git was compiled with NO_CURL, the
get_refs_list and fetch methods in struct transport might not be
populated, hence the checks in clone and fetch. After that commit, all
transports populate get_refs_list and fetch, making the checks in clone
and fetch redundant. Remove those checks.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t/lib-git-svn.sh: improve svnserve tests with parallel make test
Setting SVNSERVE_PORT enables several tests which require a local
svnserve daemon to be run (in t9113 & t9126). The tests share setup of
the local svnserve via `start_svnserve()`. The function uses svnserve's
`--listen-once` option, which causes svnserve to accept one connection
on the port, serve it, and exit. When running the tests in parallel
this fails if one test tries to start svnserve while the other is still
running.
Use the test number as the svnserve port (similar to httpd tests) to
avoid port conflicts. Developers can set GIT_TEST_SVNSERVE to any value
other than 'false' or 'auto' to enable these tests.
Acked-by: Eric Wong <e@80x24.org> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Todd Zullinger <tmz@pobox.com>
git-svn: convert CRLF to LF in commit message to SVN
Subversion since 1.6 does not accept CR characters in the commit
message, so filter it out on our end before 'git svn dcommit' sets
the svn:log property.
Reported-by: Brian Bennett <Brian.Bennett@Transamerica.com> Signed-off-by: Eric Wong <e@80x24.org>
"git send-email" tries to see if the sendmail program is available
in /usr/lib and /usr/sbin; extend the list of locations to be
checked to also include directories on $PATH.
* fk/sendmail-from-path:
git-send-email: honor $PATH for sendmail binary
The tagnames "git log --decorate" uses to annotate the commits can
now be limited to subset of available refs with the two additional
options, --decorate-refs[-exclude]=<pattern>.
* ra/decorate-limit-refs:
log: add option to choose which refs to decorate