pretty_print_commit() has a bunch of rarely-used arguments, and
introducing more of them requires yet another update of all the call
sites.  Refactor most of them into a struct to make future extensions
easier.

The ones that stay "plain" arguments were chosen on the grounds that
all callers put real arguments there, whereas some callers have 0/NULL
for all arguments that were factored into the struct.

We declare the struct 'const' to ensure none of the callers are bitten
by the changed (no longer call-by-value) semantics.
Signed-off-by: NThomas Rast <trast@student.ethz.ch>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

When running "git show-branch" without any parameter in a repository that
has showbranch.default defined, we used to rely on the fact that our
handcrafted option parsing loop never looked at av[0].

The array of default strings had the first real command line argument in
default_arg[0], but the option parser wanted to look at the array starting
at av[1], so we assigned the address of -1th element to av to force the
loop start working from default_arg[0].

This no longer worked since 57343652 (show-branch: migrate to parse-options
API, 2009-05-21), as parse_options_start() saved the incoming &av[0] in
its ctx->out and later in parse_options_end() it did memmove to ctx->out
(with ctx->cpidx == 0), overwriting the memory before default_arg[] array.

I am not sure if this is a bug in parse_options(), or a bug in the caller,
and tonight I do not have enough concentration to figure out which.  In
any case, this patch works the issue around.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Currently, the documentation suggests that 'git merge-base -a' and 'git
show-branch --merge-base' are equivalent (in fact it claims that the
former cannot handle more than two revs).

Alas, the handling of more than two revs is very different. Document
this by tests and correct the documentation to reflect this.
Signed-off-by: NMichael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Make sure that usage strings and documentation coincide with each other
and with the actual code.
Signed-off-by: NMichael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

57343652 (show-branch: migrate to parse-options API 2009-05-21)
incorrectly set the --more option's flags to be
PARSE_OPT_LASTARG_DEFAULT and PARSE_OPT_OPTARG. These two flags
shouldn't be used together. An option taking a default should just set
the default value desired and parse options will take care of the rest.

Update the header comment to better convey this information.
Signed-off-by: NStephen Boyd <bebarino@gmail.com>
Acked-by: NRené Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

To give OPT_FILENAME the prefix, we pass the prefix to parse_options()
which passes the prefix to parse_options_start() which sets the prefix
member of parse_opts_ctx accordingly. If there isn't a prefix in the
calling context, passing NULL will suffice.
Signed-off-by: NStephen Boyd <bebarino@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Note that "-g" no longer uses an equals '=' sign for its optional
arguments, but "--reflog" still does. This is normal behavior for parse
options, as arguments to "-g" are put immediately after the option with
no space.

For example

    git show-branch -g=4

is now

    git show-branch -g4
Signed-off-by: NStephen Boyd <bebarino@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Commit 76a44c5c (show-branch --reflog: show the reflog message at the
top, 2007-01-19) introduced parse_reflog_param(). The die() call was
incorrectly passed arg + 9, when it should have been passed arg.
Signed-off-by: NStephen Boyd <bebarino@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Make it possible to color the status character ('*' '!' '+' '-') of each
commit corresponding to the branch it's in. This makes it easier to
follow a particular branch, especially if there are larger gaps in the
output.

Add the config option color.showbranch and the command line options
 --color and --no-color to control the colored output.
Signed-off-by: NMarkus Heidelberg <markus.heidelberg@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NMiklos Vajna <vmiklos@frugalware.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Many call sites use strbuf_init(&foo, 0) to initialize local
strbuf variable "foo" which has not been accessed since its
declaration. These can be replaced with a static initialization
using the STRBUF_INIT macro which is just as readable, saves a
function call, and takes up fewer lines.
Signed-off-by: NBrandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

When you misuse a git command, you are shown the usage string.
But this is currently shown in the dashed form.  So if you just
copy what you see, it will not work, when the dashed form
is no longer supported.

This patch makes git commands show the dash-less version.

For shell scripts that do not specify OPTIONS_SPEC, git-sh-setup.sh
generates a dash-less usage string now.
Signed-off-by: NStephan Beyer <s-beyer@gmx.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The code assumed that there always is the current branch, but the result
from resolve_ref() on detached HEAD does not even start with "refs/heads/".

Originally noticed and fixed by Stephan Beyer.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

git_config() only had a function parameter, but no callback data
parameter.  This assumes that all callback functions only modify
global variables.

With this patch, every callback gets a void * parameter, and it is hoped
that this will help the libification effort.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

showbranch.default configuration expects a string value.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

When the body of the commit log message contains a non-ASCII character,
format-patch correctly emitted the encoding header to mark the resulting
message as such.  However, if the original message was fully ASCII, the
command line switch "-s" was given to add a new sign-off, and
the signer's name was not ASCII only, the resulting message would have
contained non-ASCII character but was not marked as such.

This was cherry-picked from the fix in 'master'
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

When the body of the commit log message contains a non-ASCII character,
format-patch correctly emitted the encoding header to mark the resulting
message as such.  However, if the original message was fully ASCII, the
command line switch "-s" was given to add a new sign-off, and
the signer's name was not ASCII only, the resulting message would have
contained non-ASCII character but was not marked as such.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

  Also remove the "len" parameter, as:
  (1) it was used as a max boundary, and every caller used ~0u
  (2) we check for final NUL no matter what, so it doesn't help for speed.

  As a result most of the pp_* function takes 3 arguments less, and we need
a lot less local variables, this makes the code way more readable, and
easier to extend if needed.

  This patch also fixes some spacing and cosmetic issues.

  This patch also fixes (as a side effect) a memory leak intoruced in
builtin-archive.c at commit df4a394f (fmt was xmalloc'ed and not free'd)
Signed-off-by: NPierre Habouzit <madcoder@debian.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Traditionally we had 16kB limit when formatting log messages for
output, because it was easier to arrange for the caller to have
a reasonably big buffer and pass it down without ever worrying
about reallocating.

This changes the calling convention of pretty_print_commit() to
lift this limit.  Instead of the buffer and remaining length, it
now takes a pointer to the pointer that points at the allocated
buffer, and another pointer to the location that stores the
allocated length, and reallocates the buffer as necessary.

To support the user format, the error return of interpolate()
needed to be changed.  It used to return a bool telling "Ok the
result fits", or "Sorry, I had to truncate it".  Now it returns
0 on success, and returns the size of the buffer it wants in
order to fit the whole result.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

We shouldn't attempt to assign constant strings into char*, as the
string is not writable at runtime.  Likewise we should always be
treating unsigned values as unsigned values, not as signed values.

Most of these are very straightforward.  The only exception is the
(unnecessary) xstrdup/free in builtin-branch.c for the detached
head case.  Since this is a user-level interactive type program
and that particular code path is executed no more than once, I feel
that the extra xstrdup call is well worth the easy elimination of
this warning.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

There were instances of strncmp() that were formatted improperly
(e.g. whitespace around parameter before closing parenthesis)
that caused the earlier mechanical conversion step to miss
them.  This step cleans them up.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Previous step converted use of strncmp() with literal string
mechanically even when the result is only used as a boolean:

    if (!strncmp("foo", arg, 3)) ==> if (!(-prefixcmp(arg, "foo")))

This step manually cleans them up to read:

    if (!prefixcmp(arg, "foo"))
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This mechanically converts strncmp() to use prefixcmp(), but only when
the parameters match specific patterns, so that they can be verified
easily.  Leftover from this will be fixed in a separate step, including
idiotic conversions like

    if (!strncmp("foo", arg, 3))

  =>

    if (!(-prefixcmp(arg, "foo")))

This was done by using this script in px.perl

   #!/usr/bin/perl -i.bak -p
   if (/strncmp\(([^,]+), "([^\\"]*)", (\d+)\)/ && (length($2) == $3)) {
           s|strncmp\(([^,]+), "([^\\"]*)", (\d+)\)|prefixcmp($1, "$2")|;
   }
   if (/strncmp\("([^\\"]*)", ([^,]+), (\d+)\)/ && (length($1) == $3)) {
           s|strncmp\("([^\\"]*)", ([^,]+), (\d+)\)|(-prefixcmp($2, "$1"))|;
   }

and running:

   $ git grep -l strncmp -- '*.c' | xargs perl px.perl
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Now we have a separate reflog on HEAD, show-branch -g without an explicit
parameter defaults to the current branch, or HEAD when it is detached
from branches.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NJunio C Hamano <junkio@cox.net>

A short-hand "-g" for "git log --walk-reflogs" and "git
show-branch --reflog" makes it easier to access the reflog
info.

[jc: added -g to show-branch for symmetry]
Signed-off-by: NJohannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Not passing tz to show_date() is not a fix.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NJunio C Hamano <junkio@cox.net>

This changes the output so the list at the top shows the reflog
message, along with their relative timestamps.

You can use --reflog=<n> to show <n> most recent log entries, or
use --reflog=<n>,<b> to show <n> entries going back from the
entry <b>.  <b> can be either a number (so --reflog=4,20 shows 4
records starting from @{20}) or a timestamp (e.g. --reflog='4,1 day').

Here is a sample output (with --list option):

  $ git show-branch --reflog=10 --list jc/show-reflog
    [jc/show-reflog@{0}] (3 minutes ago) commit (amend): show-branch --ref
    [jc/show-reflog@{1}] (5 minutes ago) reset HEAD^
    [jc/show-reflog@{2}] (14 minutes ago) commit: show-branch --reflog: sho
    [jc/show-reflog@{3}] (14 minutes ago) commit: show-branch --reflog: sho
    [jc/show-reflog@{4}] (18 minutes ago) commit (amend): Extend read_ref_a
    [jc/show-reflog@{5}] (18 minutes ago) commit (amend): Extend read_ref_a
    [jc/show-reflog@{6}] (18 minutes ago) commit (amend): Extend read_ref_a
    [jc/show-reflog@{7}] (18 minutes ago) am: read_ref_at(): allow retrievi
    [jc/show-reflog@{8}] (18 minutes ago) reset --hard HEAD~4
    [jc/show-reflog@{9}] (61 minutes ago) commit: show-branch --reflog: use

This shows what I did more cleanly:

  $ git show-branch --reflog=10 jc/show-reflog
  ! [jc/show-reflog@{0}] (3 minutes ago) commit (amend): show-branch --ref
   ! [jc/show-reflog@{1}] (5 minutes ago) reset HEAD^
    ! [jc/show-reflog@{2}] (14 minutes ago) commit: show-branch --reflog:
     ! [jc/show-reflog@{3}] (14 minutes ago) commit: show-branch --reflog:
      ! [jc/show-reflog@{4}] (18 minutes ago) commit (amend): Extend read_
       ! [jc/show-reflog@{5}] (18 minutes ago) commit (amend): Extend read
        ! [jc/show-reflog@{6}] (18 minutes ago) commit (amend): Extend rea
         ! [jc/show-reflog@{7}] (18 minutes ago) am: read_ref_at(): allow
          ! [jc/show-reflog@{8}] (18 minutes ago) reset --hard HEAD~4
           ! [jc/show-reflog@{9}] (61 minutes ago) commit: show-branch --r
  ----------
  +          [jc/show-reflog@{0}] show-branch --reflog: show the reflog
    +        [jc/show-reflog@{2}] show-branch --reflog: show the reflog
   +++       [jc/show-reflog@{1}] show-branch --reflog: show the reflog
  +++++      [jc/show-reflog@{4}] Extend read_ref_at() to be usable fro
       +     [jc/show-reflog@{5}] Extend read_ref_at() to be usable fro
        +    [jc/show-reflog@{6}] Extend read_ref_at() to be usable fro
         +   [jc/show-reflog@{7}] read_ref_at(): allow retrieving the r
           + [jc/show-reflog@{9}] show-branch --reflog: use updated rea
           + [jc/show-reflog@{9}^] read_ref_at(): allow reporting the c
           + [jc/show-reflog@{9}~2] show-branch --reflog: show the refl
           + [jc/show-reflog@{9}~3] read_ref_at(): allow retrieving the
  ++++++++++ [jc/show-reflog@{8}] dwim_ref(): Separate name-to-ref DWIM

At @{9}, I had a commit to complete 5 patch series, but I wanted
to consolidate two commits that enhances read_ref_at() into one
(they were @{9}^ and @{9}~3), and another two that touch show-branch
into one (@{9} and @{9}~2).

I first saved them with "format-patch -4", and then did a reset
at @{8}.  At @{7}, I applied one of them with "am", and then
used "git-apply" on the other one, and amended the commit at
@{6} (so @{6} and @{7} has the same parent).  I did not like the
log message, so I amended again at @{5}.

Then I cherry-picked @{9}~2 to create @{3} (the log message
shows that it needs to learn to set GIT_REFLOG_ACTION -- it uses
"git-commit" and the log entry is attributed for it).  Another
cherry-pick built @{2} out of @{9}, but what I wanted to do was
to squash these two into one, so I did a "reset HEAD^" at @{1}
and then made the final commit by amending what was at the top.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Branch has "-r" for remote branches and "-a" for local and remote.
It seems logical to mirror that in show-branch.  Also removes the
dubiously useful "--tags" option (as part of changing the meaning
for "--all").
Signed-off-by: NBrian Gernhardt <benji@silverinsanity.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This is a mechanical clean-up of the way *.c files include
system header files.

 (1) sources under compat/, platform sha-1 implementations, and
     xdelta code are exempt from the following rules;

 (2) the first #include must be "git-compat-util.h" or one of
     our own header file that includes it first (e.g. config.h,
     builtin.h, pkt-line.h);

 (3) system headers that are included in "git-compat-util.h"
     need not be included in individual C source files.

 (4) "git-compat-util.h" does not have to include subsystem
     specific header files (e.g. expat.h).
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NJunio C Hamano <junkio@cox.net>

This was lost in the packed-ref updates. The original test was a bit
dubious, so I cleaned that up, too. It fixes the case when the current HEAD
is refs/heads/bla/master: the original test was true for both bla/master
_and_ master.

However, it shares a hard-to-fix bug with the original test: if the current
HEAD is refs/heads/master, and there is a branch refs/heads/heads/master,
then both are marked active.
Signed-off-by: NJohannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This adds a "int *flag" parameter to resolve_ref() and makes
for_each_ref() family to call callback function with an extra
"int flag" parameter.  They are used to give two bits of
information (REF_ISSYMREF and REF_ISPACKED) about the ref.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This is a long overdue fix to the API for for_each_ref() family
of functions.  It allows the callers to specify a callback data
pointer, so that the caller does not have to use static
variables to communicate with the callback funciton.

The updated for_each_ref() family takes a function of type

	int (*fn)(const char *, const unsigned char *, void *)

and a void pointer as parameters, and calls the function with
the name of the ref and its SHA-1 with the caller-supplied void
pointer as parameters.

The commit updates two callers, builtin-name-rev.c and
builtin-pack-refs.c as an example.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

The old code used to totally mix up the notion of a ref-name and the path
that that ref was associated with.  That was not only horribly ugly (a
number of users got the path, and then wanted to try to turn it back into
a ref-name again), but it fundamnetally doesn't work at all once we do any
setup where a ref doesn't have a 1:1 relationship with a particular
pathname.

This fixes things up so that we use the ref-name throughout, and only
turn it into a pathname once we actually look it up in the filesystem.
That makes a lot of things much clearer and more straightforward.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Like xmalloc and xrealloc xstrdup dies with a useful message if
the native strdup() implementation returns NULL rather than a
valid pointer.

I just tried to use xstrdup in new code and found it to be missing.
However I expected it to be present as xmalloc and xrealloc are
already commonly used throughout the code.

[jc: removed the part that deals with last_XXX, which I am
 finding more and more dubious these days.]
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Exposes the infrastructure from 9a8e35e9.
Signed-off-by: NJonas Fonseca <fonseca@diku.dk>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Introduces global inline:

	hashcmp(const unsigned char *sha1, const unsigned char *sha2)

Uses memcmp for comparison and returns the result based on the length of
the hash name (a future runtime decision).
Acked-by: NAlex Riesen <raa.lkml@gmail.com>
Signed-off-by: NDavid Rientjes <rientjes@google.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

[jc: I needed to hand merge the changes to the updated codebase,
 so the result needs to be checked.]
Signed-off-by: NDavid Rientjes <rientjes@google.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>