| Commit message (Collapse) | Author | Age |
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Signed-off-by: Junio C Hamano <junkio@cox.net>
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For commit messages, we should really put the "line_termination" when we
output the character in between different commits, *not* between the
commit and the diff. The diff goes hand-in-hand with the commit, it
shouldn't be separated from it with the termination character.
So this:
- uses the termination character for true inter-commit spacing
- uses a regular newline between the commit log and the diff
We had it the other way around.
For the normal case where the termination character is '\n', this
obviously doesn't change anything at all, since we just switched two
identical characters around. So it's very safe - it doesn't change any
normal usage, but it definitely fixes "git log -z".
By fixing "git log -z", you can now also do insane things like
git log -p -z |
grep -z "some patch expression" |
tr '\0' '\n' |
less -S
and you will see only those commits that have the "some patch expression"
in their commit message _or_ their patches.
(This is slightly different from 'git log -S"some patch expression"',
since the latter requires the expression to literally *change* in the
patch, while the "git log -p -z | grep .." approach will see it if it's
just an unchanged _part_ of the patch context)
Of course, if you actually do something like the above, you're probably
insane, but hey, it works!
Try the above command line for a demonstration (of course, you need to
change the "some patch expression" to be something relevant). The old
behaviour of "git log -p -z" was useless (and got things completely wrong
for log entries without patches).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Earlier, when a path that was removed from the working tree was
chosen for update subcommand, you got an error like this:
error: git-resolve.sh: does not exist and --remove not passed
fatal: Unable to process file git-resolve.sh
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Quite nonstandard "date -d @11111111 +%s" does not even fail on
OpenBSD but gives the current date in "seconds since epoch"
format, which is useless for the purpose of this test. We want
to make sure that this returns exactly the same input before
proceeding.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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* 'ml/gitk' (early part):
gitk: Use show-ref instead of ls-remote
Make gitk work reasonably well on Cygwin.
gitk - remove trailing whitespace from a few lines.
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It used to be ls-remote on self was the only easy way to grab
the ref information. Now we have show-ref which does not
involve fork and IPC, so use it.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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The gitk gui layout was completely broken on Cygwin. If gitk was started
without previous geometry in ~/.gitk, the user could drag the window sashes
to get a useable layout. However, if ~/.gitk existed, this was not possible
at all.
The fix was to rewrite makewindow, changing the toplevel containers and
the particular geometry information saved between sessions. Numerous bugs
in both the Cygwin and the Linux Tk versions make this a delicate
balancing act: the version here works in both but many subtle variants
are competely broken in one or the other environment.
Three user visible changes result:
1 - The viewer is fully functional under Cygwin.
2 - The search bar moves from the bottom to the top of the lower left
pane. This was necessary to get around a layout problem on Cygwin.
3 - The window size and position is saved and restored between sessions.
Again, this is necessary to get around a layout problem on Cygwin.
Signed-off-by: Mark Levedahl <mdl123@verizon.net>
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Signed-off-by: Mark Levedahl <mdl123@verizon.net>
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Not on all platforms are size_t and unsigned long equivalent.
Since I do not know how portable %z is, I play safe, and just
cast the respective variables to unsigned long.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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When we remove the last reflog in a directory, opendir() would
succeed and we would iterate over its dirents, expecting retval
to be initialized to zero and setting it to non-zero only upon
seeing an error. If the directory is empty, oops!, we do not
have anybody that touches retval.
The problem is because we initialize retval to errno even on
success from opendir(), which would leave the errno unmolested.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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* 'master' of git://repo.or.cz/git/fastimport:
Add a Tips and Tricks section to fast-import's manual.
Don't crash fast-import if the marks cannot be exported.
Dump all refs and marks during a checkpoint in fast-import.
Teach fast-import how to sit quietly in the corner.
Teach fast-import how to clear the internal branch content.
Minor timestamp related documentation corrections for fast-import.
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There has been some informative lessons learned in the gfi user
community, and these really should be written down and documented
for future generations of frontend developers.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Apparently fast-import used to die a horrible death if we
were unable to open the marks file for output. This is
slightly less than ideal, especially now that we dump
the marks as part of the `checkpoint` command.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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If the frontend asks us to checkpoint (via the explicit checkpoint
command) its probably because they are afraid the current import
will crash/fail/whatever and want to make sure they can pickup from
the last checkpoint. To do that sort of recovery, we will need the
current tip of every branch and tag available at the next startup.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Often users will be running fast-import from within a larger frontend
process, and this may be a frequent periodic tool such as a future
edition of `git-svn fetch`. We don't want to bombard users with our
large stats output if they won't be interested in it, so `--quiet`
is now an option to make gfi be more silent.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Some frontends may not be able to (easily) keep track of which files
are included in the branch, and which aren't. Performing this
tracking can be tedious and error prone for the frontend to do,
especially if its foreign data source cannot supply the changed
path list on a per-commit basis.
fast-import now allows a frontend to request that a branch's tree
be wiped clean (reset to the empty tree) at the start of a commit,
allowing the frontend to feed in all paths which belong on the branch.
This is ideal for a tar-file importer frontend, for example, as
the frontend just needs to reformat the tar data stream into a gfi
data stream, which may be something a few Perl regexps can take
care of. :)
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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As discussed on the mailing list, the documentation used here was
not quite accurate. Improve upon it.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Earlier we only used loose refs to anchor already existing
objects. When cloning from a repository that forked relatively
long time ago from the reference repository, this made the
want/have exchange by fetch-pack to do unnecessary work.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Use sed instead, it comes with cygwin and there is almost no chance of
someone installing a sed with default CRLF lineendings by accident.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Signed-off-by: Michael <barra_cuda@katamail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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This was useful when the current recursive was in development, and
the original Python version was still called git-merge-recursive.
Now the synonym has served us well, it is time to move on.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Schedule git-diff-stages and git-resolve to be removed by 1.5.1
Signed-off-by: Junio C Hamano <junkio@cox.net>
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* 'master' of git://repo.or.cz/git/fastimport: (81 commits)
S_IFLNK != 0140000
Don't do non-fastforward updates in fast-import.
Support RFC 2822 date parsing in fast-import.
Minor fast-import documentation corrections.
Remove unnecessary null pointer checks in fast-import.
Correct fast-import timezone documentation.
Correct minor style issue in fast-import.
Correct compiler warnings in fast-import.
Remove --branch-log from fast-import.
Initial draft of fast-import documentation.
Don't support shell-quoted refnames in fast-import.
Reduce memory usage of fast-import.
Include checkpoint command in the BNF.
Accept 'inline' file data in fast-import commit structure.
Reduce value duplication in t9300-fast-import.
Create test case for fast-import.
Support delimited data regions in fast-import.
Remove unnecessary options from fast-import.
Use fixed-size integers when writing out the index in fast-import.
Always use struct pack_header for pack header in fast-import.
...
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Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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If fast-import is being used to update an existing branch of
a repository, the user may not want to lose commits if another
process updates the same ref at the same time. For example, the
user might be using fast-import to make just one or two commits
against a live branch.
We now perform a fast-forward check during the ref updating process.
If updating a branch would cause commits in that branch to be lost,
we skip over it and display the new SHA1 to standard error.
This new default behavior can be overridden with `--force`, like
git-push and git-fetch.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Since some frontends may be working with source material where
the dates are only readily available as RFC 2822 strings, it is
more friendly if fast-import exposes Git's parse_date() function
to handle the conversion. This way the frontend doesn't need
to perform the parsing itself.
The new --date-format option to fast-import can be used by a
frontend to select which format it will supply date strings in.
The default is the standard `raw` Git format, which fast-import
has always supported. Format rfc2822 can be used to activate the
parse_date() function instead.
Because fast-import could also be useful for creating new, current
commits, the format `now` is also supported to generate the current
system timestamp. The implementation of `now` is a trivial call
to datestamp(), but is actually a whole whopping 3 lines so that
fast-import can verify the frontend really meant `now`.
As part of this change I have added validation of the `raw` date
format. Prior to this change fast-import would accept anything
in a `committer` command, even if it was seriously malformed.
Now fast-import requires the '> ' near the end of the string and
verifies the timestamp is formatted properly.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Corrected a couple of header markup lines which were shorter than the
actual header, and made the `data` commands two formats into a named
list, which matches how we document the two formats of the `M` command
within a commit.
Also tried to simplify the language about our decimal integer format;
Linus pointed out I was probably being too specific at the cost of
reduced readability.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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There is no need to check for a NULL pointer before invoking free(),
the runtime library automatically performs this check anyway and
does nothing if a NULL pointer is supplied.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Andy Parkins and Linus Torvalds both noticed that the description
of the timezone was incorrect. Its not expressed in minutes.
Its more like "hhmm", where "hh" is the number of hours and "mm"
is the number of minutes shifted from GMT/UTC.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Junio noticed that I was using a different style in fast-import
for returned pointers than the rest of Git. Before merging this
code into the main git.git tree I'd like to make it consistent,
as this style variation was not intentional.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Junio noticed these warnings/errors in fast-import when compiling
with `-Werror -ansi -pedantic`. A few changes are to reduce compiler
warnings, while one (in cmd_merge) is a bug fix.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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The --branch-log option and its associated code hasn't been used in
several months, as its not really very useful for debugging fast-import
or a frontend. I don't plan on supporting it in this state long-term,
so I'm killing it now before it gets distributed to a wider audience.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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This is a first pass at the manpage for git-fast-import.
I have tried to cover the input format in extreme detail, creating a
reference which is more detailed than the BNF grammar appearing in
the header of fast-import.c. I have also covered some details about
gfi's performance and memory utilization, as well as the average
learning curve required to create a gfi frontend application (as it
is far lower than it might appear on first glance).
The documentation still lacks real example input streams, which may
turn out to be difficult to format in asciidoc due to the blank lines
which carry meaning within the format.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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The current implementation of shell-style quoted refnames and
SHA-1 expressions within fast-import contains a bad memory leak.
We leak the unquoted strings used by the `from` and `merge`
commands, maybe others. Its also just muddling up the docs.
Since Git refnames cannot contain LF, and that is our delimiter
for the end of the refname, and we accept any other character
as-is, there is no reason for these strings to support quoting,
except to be nice to frontends. But frontends shouldn't be
expecting to use funny refs in Git, and its just as simple to
never quote them as it is to always pass them through the same
quoting filter as pathnames. So frontends should never quote
refs, or ref expressions.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Some structs are allocated rather frequently, but were using integer
types which were far larger than required to actually store their
full value range.
As packfiles are limited to 4 GiB we don't need more than 32 bits to
store the offset of an object within that packfile, an `unsigned long`
on a 64 bit system is likely a 64 bit unsigned value. Saving 4 bytes
per object on a 64 bit system can add up fast on any sizable import.
As atom strings are strictly single components in a path name these
are probably limited to just 255 bytes by the underlying OS. Going
to that short of a string is probably too restrictive, but certainly
`unsigned int` is far too large for their lengths. `unsigned short`
is a reasonable limit.
Modes within a tree really only need two bytes to store their whole
value; using `unsigned int` here is vast overkill. Saving 4 bytes
per file entry in an active branch can add up quickly on a project
with a large number of files.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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This command isn't encouraged (as its slow) but it does exist and
is accepted, so it still should be covered in the BNF.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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git-fast-import requires use of inttypes.h, but the master branch has
added it to git-compat-util differently than git-fast-import originally
had used it. This merge back of master to the fast-import topic is to
get (and use) inttypes.h the way master is using it.
This is a partially evil merge to remove the call to setup_ident(),
as the master branch now contains a change which makes this implicit
and therefore removed the function declaration. (commit 01754769).
Conflicts:
git-compat-util.h
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Its very annoying to need to specify the file content ahead of a
commit and use marks to connect the individual blobs to the commit's
file modification entry, especially if the frontend can't/won't
generate the blob SHA1s itself. Instead it would much easier to
use if we can accept the blob data at the same time as we receive
each file_change line.
Now fast-import accepts 'inline' instead of a mark idnum or blob
SHA1 within the 'M' type file_change command. If an inline is
detected the very next line must be a 'data n' command, supplying
the file data.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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It is error prone to list the value of each file twice, instead we
should list the value only once early in the script and reuse the
shell variable when we need to access it.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Now that its easier to craft test cases (thanks to 'data <<')
we should start to verify fast-import works as expected.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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During testing its nice to not have to feed the length of a data
chunk to the 'data' command of fast-import. Instead we would
prefer to be able to establish a data chunk much like shell's <<
operator and use a line delimiter to denote the end of the input.
So now if a data command is started as 'data <<EOF' we will look
for a terminator line containing only the string EOF on that line.
Once found, we stop the data command. Everything between the two
lines is used as the data value.
The 'data <<' syntax is slower than 'data n', as we don't know how
many bytes to expect and instead must grow our buffer on the fly.
It also has the problem that the frontend must use a string which
will not appear on a line by itself in the input, and the data
region will always end in an LF. For these reasons real import
frontends are encouraged to continue to use _only_ 'data n'.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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The --objects command line option is rather unnecessary. Internally
we allocate objects in 5000 unit blocks, ensuring that any sort
of malloc overhead is ammortized over the individual objects to
almost nothing. Since most frontends don't know how many objects
they will need for a given import run (and its hard for them to
predict without just doing the run) we probably won't see anyone
using --objects. Further since there's really no major benefit
to using the option, most frontends won't even bother supplying
it even if they could estimate the number of objects. So I'm
removing it.
The --max-objects-per-pack option was probably a mistake to even
have added in the first place. The packfile format is limited
to 4 GiB today; given that objects need at least 3 bytes of data
(and probably need even more) there's no way we are going to exceed
the limit of 1<<32-1 objects before we reach the file size limit.
So I'm removing it (to slightly reduce the complexity of the code)
before anyone gets any wise ideas and tries to use it.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Currently the pack .idx file format uses 32-bit unsigned integers
for the fan-out table and the object offsets. We had previously
defined these as 'unsigned int', but not every system will define
that type to be a 32 bit value. To ensure maximum portability we
should always use 'uint32_t'.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Previously we were using 'unsigned int' to update the hdr_entries
field of the pack header after the file had been completed and
was being hashed. This may not be 32 bits on all platforms.
Instead we want to always uint32_t.
I'm actually cheating here by just using the pack_header like the
rest of Git and letting the struct definition declare the correct
type. Right now that field is still 'unsigned int' (wrong) but a
pending change submitted by Simon 'corecode' Schubert changes it
to uint32_t. After that change is merged in fast-import will do
the right thing all of the time.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Branches are only contained by a packfile if the branch actually
had its most recent commit in that packfile. So new branches are
set to MAX_PACK_ID to ensure they don't cause their commit to list
as part of the first packfile when it closes out if the commit was
actually in existance before fast-import started.
Also corrected the type of last_commit to be umaxint_t to prevent
overflow and wraparound on very large imports. Though that is
highly unlikely to occur as we're talking 4 billion commits, which
no real project has right now.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Apparently the git convention is to declare any function which
takes no arguments as taking void. I did not do this during the
early fast-import development, but should have.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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The length of an atom string cannot be negative. So make it
explicit and declare it as an unsigned value.
The shift width in a mark table node also cannot be negative.
I'm also moving it to after the pointer arrays to prevent any
possible alignment problems on a 64 bit system.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Now that fast-import uses uintmax_t (the largest available unsigned
integer type) for marks we don't want to say its an unsigned 32
bit integer in ASCII base 10 notation. It could be much larger,
especially on 64 bit systems, and especially if a frontend uses
a very large number of marks (1 per file revision on a very, very
large import).
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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To help callers repack very large repositories into a series of
packfiles fast-import now outputs the last commits/tags it wrote to
a packfile when it prints out the packfile name. This information
can be feed to pack-objects --revs to repack. For the first pack
of an initial import this is pretty easy (just feed those SHA1s on
stdin) but for subsequent packs you want to feed the subsequent
pack's final SHA1s but also all prior pack's SHA1s prefixed with
the negation operator. This way the prior pack's data does not
get included into the subsequent pack.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Since object_count is limited to 'unsigned long' (really an
unsigned 32 bit integer value) by the pack file format we may as
well use exactly that type here in fast-import for that counter.
An earlier change by me incorrectly made it uintmax_t.
But since object_count is a counter for the current packfile only,
we don't want to output its value at the end. Instead we should
sum up the individual type counters and report that total, as that
will cover all of the packfiles.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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