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#!/usr/bin/perl
=head1 NAME
mr - a Multiple Repository management tool
=head1 SYNOPSIS
B<mr> [options] checkout
B<mr> [options] update
B<mr> [options] status
B<mr> [options] commit [-m "message"]
B<mr> [options] record [-m "message"]
B<mr> [options] push
B<mr> [options] diff
B<mr> [options] log
B<mr> [options] run command [param ...]
B<mr> [options] bootstrap url [directory]
B<mr> [options] register [repository]
B<mr> [options] config section ["parameter=[value]" ...]
B<mr> [options] action [params ...]
B<mr> [options] [online|offline]
B<mr> [options] remember action [params ...]
=head1 DESCRIPTION
B<mr> is a Multiple Repository management tool. It can checkout, update, or
perform other actions on a set of repositories as if they were one combined
repository. It supports any combination of subversion, git, cvs, mercurial,
bzr, darcs, fossil and veracity repositories, and support for other version
control systems can easily be added.
B<mr> cds into and operates on all registered repositories at or below your
working directory. Or, if you are in a subdirectory of a repository that
contains no other registered repositories, it will stay in that directory,
and work on only that repository,
B<mr> is configured by .mrconfig files, which list the repositories. It
starts by reading the .mrconfig file in your home directory, and this can
in turn chain load .mrconfig files from repositories. It also automatically
looks for a .mrconfig file in the current directory, or in one of its
parent directories.
These predefined commands should be fairly familiar to users of any version
control system:
=over 4
=item checkout (or co)
Checks out any repositories that are not already checked out.
=item update
Updates each repository from its configured remote repository.
If a repository isn't checked out yet, it will first check it out.
=item status
Displays a status report for each repository, showing what
uncommitted changes are present in the repository.
=item commit (or ci)
Commits changes to each repository. (By default, changes are pushed to the
remote repository too, when using distributed systems like git. If you
don't like this default, you can change it in your .mrconfig, or use record
instead.)
The optional -m parameter allows specifying a commit message.
=item record
Records changes to the local repository, but does not push them to the
remote repository. Only supported for distributed version control systems.
The optional -m parameter allows specifying a commit message.
=item push
Pushes committed local changes to the remote repository. A no-op for
centralized version control systems.
=item diff
Show a diff of uncommitted changes.
=item log
Show the commit log.
=item run command [param ...]
Runs the specified command in each repository.
=back
These commands are also available:
=over 4
=item bootstrap url [directory]
Causes mr to download the url to a temporary file, and use it as a
F<.mrconfig>-format file to checkout the repositories listed in it,
into the specified directory. The temporary file is saved to
F<.mrconfig> in the current directory unless that file already exists.
The directory will be created if it does not exist. If no directory is
specified, the current directory will be used.
If the F<.mrconfig> file includes a repository named ".", that
is checked out into the top of the specified directory.
=item list (or ls)
List the repositories that mr will act on.
=item register
Register an existing repository in a mrconfig file. By default, the
repository in the current directory is registered, or you can specify a
directory to register.
The mrconfig file that is modified is chosen by either the -c option, or by
looking for the closest known one at or in a parent of the current directory.
=item config
Adds, modifies, removes, or prints a value from a mrconfig file. The next
parameter is the name of the section the value is in. To add or modify
values, use one or more instances of "parameter=value". Use "parameter=" to
remove a parameter. Use just "parameter" to get the value of a parameter.
For example, to add (or edit) a repository in src/foo:
mr config src/foo checkout="svn co svn://example.com/foo/trunk foo"
To show the command that mr uses to update the repository in src/foo:
mr config src/foo update
To see the built-in library of shell functions contained in mr:
mr config DEFAULT lib
The mrconfig file that is used is chosen by either the -c option, or by
looking for the closest known one at or in a parent of the current directory.
=item offline
Advises mr that it is in offline mode. Any commands that fail in
offline mode will be remembered, and retried when mr is told it's online.
=item online
Advices mr that it is in online mode again. Commands that failed while in
offline mode will be re-run.
=item remember
Remember a command, to be run later when mr re-enters online mode. This
implicitly puts mr into offline mode. The command can be any regular mr
command. This is useful when you know that a command will fail due to being
offline, and so don't want to run it right now at all, but just remember
to run it when you go back online.
=item help
Displays this help.
=back
Actions can be abbreviated to any unambiguous substring, so
"mr st" is equivalent to "mr status", and "mr up" is equivalent to "mr
update"
Additional parameters can be passed to most commands, and are passed on
unchanged to the underlying version control system. This is mostly useful
if the repositories mr will act on all use the same version control
system.
=head1 OPTIONS
=over 4
=item -d directory
=item --directory directory
Specifies the topmost directory that B<mr> should work in. The default is
the current working directory.
=item -c mrconfig
=item --config mrconfig
Use the specified mrconfig file. The default is to use both F<~/.mrconfig>
as well as look for a F<.mrconfig> file in the current directory, or in one
of its parent directories.
=item -f
=item --force
Force mr to act on repositories that would normally be skipped due to their
configuration.
=item -r repo1,repo2,...
=item --repos repo1,repo2,...
Out of the repositories available (subject to options such as C<-d>
and C<-c>), only act on the repositories listed. This should be a
comma-separated list of names as specified by the C<name> special
parameter (or default values thereof). They are still acted on in the
order specified via the "order" parameter, rather than the order in
the comma-separated list.
This option only filters the repositories already available; it cannot
augment that list. If this option is not specified, the default is to
run on all available repositories.
The value (or the empty string if not specified) is passed to the
<MR_REPOS> environment variable of sub-processes, so that shell code
such as the C<lazy> function can determine whether C<mr> is acting on
all repositories, or a manually selected subset.
=item -v [N]
=item --verbose[=N]
Control verbosity level. Defaults to 2, or the value of the
C<MR_DEFAULT_VERBOSITY> environment variable if set. If the option is
used with no value for C<N> then c<N> defaults to 4.
Level >= 0 shows failures
Level >= 1 shows:
* when each action on a repository commences and finishes
* statistics of outcomes after all actions terminate
Level >= 2 shows:
* bootstrap creating .mrconfig
Level >= 3 shows:
* which repos are selected via C<-r>
* when a repo's directory is created on checkout
* which mr config files are loaded
* loadconfig details
* includes
* when a repo is skipped due to being outside cwd,
or in it but exceeding max depth, or is chosen
because it contained the cwd
Level >= 4 shows:
* when vcs test is run
* shell code to be executed, excluding lib code and vcs test
* config is loaded
* config is included
* config is chained
* config is loaded during bootstrap
Level >= 5 shows:
* which repos are skipped via skip
* which repos are filtered out by name
* all shell code to be executed
* action definition sources
* config file parser internals
=item -q
=item --quiet
Equivalent to C<-v0>. Overrides any C<-v> option.
=item -k
=item --insecure
Accept untrusted SSL certificates when bootstrapping.
=item -s
=item --stats
Expand the statistics line displayed at the end to include information
about exactly which repositories failed and were skipped, if any.
=item -i
=item --interactive
Interactive mode. If a repository fails to be processed, a subshell will be
started which you can use to resolve or investigate the problem. Exit the
subshell to continue the mr run.
=item -n [number]
=item --no-recurse [number]
If no number if specified, just operate on the repository for the current
directory, do not recurse into deeper repositories.
If a number is specified, will recurse into repositories at most that many
subdirectories deep. For example, with -n 2 it would recurse into ./src/foo,
but not ./src/packages/bar.
=item -j [number]
=item --jobs [number]
Run the specified number of jobs in parallel, or an unlimited number of jobs
with no number specified. This can greatly speed up operations such as updates.
It is not recommended for interactive operations.
Note that running more than 10 jobs at a time is likely to run afoul of
ssh connection limits. Running between 3 and 5 jobs at a time will yield
a good speedup in updates without loading the machine too much.
=item -t
=item --trust-all
Trust all mrconfig files even if they are not listed in F<~/.mrtrust>.
Use with caution.
=item -p
=item --path
This obsolete flag is ignored.
=back
=head1 MRCONFIG FILES
Here is an example F<.mrconfig> file:
[src]
checkout = svn checkout svn://svn.example.com/src/trunk src
chain = true
[src/linux-2.6]
checkout = git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git &&
cd linux-2.6 &&
git checkout -b mybranch origin/master
The F<.mrconfig> file uses a variant of the INI file format. Lines
starting with "#" are comments. Values can be continued to the
following lines by indenting them with whitespace. If multiple
continuation lines are present, the whitespace prefix on the first
continuation line is trimmed from all subsequent continuation lines.
This allows any indentation within the continuation lines to be
preserved. Totally empty lines are also allowed within the
continuation lines if followed by a line containing the same
whitespace prefix.
The C<DEFAULT> section allows setting default values for the sections that
come after it.
The C<ALIAS> section allows adding aliases for actions. Each parameter
is an alias, and its value is the action to use.
All other sections add repositories. The section header specifies the
directory where the repository is located. This is relative to the directory
that contains the mrconfig file, but you can also choose to use absolute
paths. (Note that you can use environment variables in section names; they
will be passed through the shell for expansion. For example,
C<[$HOSTNAME]>, or C<[${HOSTNAME}foo]>).
Within a section, each parameter defines a shell command to run to handle a
given action. mr contains default handlers for "update", "status",
"commit", and other standard actions.
Normally you only need to specify what to do for "checkout". Here you
specify the command to run in order to create a checkout of the repository.
The command will be run in the parent directory, and must create the
repository's directory. So use C<git clone>, C<svn checkout>, C<bzr branch>
or C<bzr checkout> (for a bound branch), etc.
Note that these shell commands are run in a C<set -e> shell
environment, where any additional parameters you pass are available in
C<$@>. All commands other than "checkout" are run inside the repository,
though not necessarily at the top of it.
The C<MR_REPO> environment variable is set to the path to the top of the
repository. (For the "register" action, "MR_REPO" is instead set to the
basename of the directory that should be created when checking the
repository out.)
The C<MR_REPOS> environment variable is set to the value of the
C<--repos> option, or the empty string if C<--repos> was not
specified.
The C<MR_CONFIG> environment variable is set to the .mrconfig file
that defines the repo being acted on, or, if the repo is not yet in a config
file, the F<.mrconfig> file that should be modified to register the repo.
The C<MR_ACTION> environment variable is set to the command being run
(update, checkout, etc).
A few parameters have special meanings:
=over 4
=item name
The "name" parameter can be used to specify a unique name for this
repository. If not specified, defaults to the "basename" (i.e. final
segment) of the repository path listed in the section header, but only
if that default value has not already been given to another repo.
This value can be referred to via the C<--repos> option in order to
limit which repositories are acted on. It is also passed to shell
code via the C<MR_NAME> environment variable.
If there is a clash of names, mr will warn you about it, but you will
have to resolve it yourself; therefore F<.mrconfig> writers should
note that there is no guarantee that C<MR_NAME> will get set.
=item skip
If the "skip" parameter is set and its command returns true, then B<mr>
will skip acting on that repository. The command is passed the action
name in C<$1>.
Here are two examples. The first skips the repo unless
mr is run by joey. The second uses the hours_since function
(included in mr's built-in library) to skip updating the repo unless it's
been at least 12 hours since the last update.
[mystuff]
checkout = ...
skip = test `whoami` != joey
[linux]
checkout = ...
skip = [ "$1" = update ] && ! hours_since "$1" 12
Another way to use skip is for a lazy checkout. This makes mr skip
operating on a repo unless it already exists. To enable the
repo, you have to explicitly check it out (using C<mr --force -d foo checkout>
or C<mr -r foo checkout>).
[foo]
checkout = ...
skip = lazy
=item order
The "order" parameter can be used to override the default ordering of
repositories. The default order value is 10. Use smaller values to make
repositories be processed earlier, and larger values to make repositories
be processed later.
Note that if a repository is located in a subdirectory of another
repository, ordering it to be processed earlier is not recommended.
=item chain
If the "chain" parameter is set and its command returns true, then B<mr>
will try to load a F<.mrconfig> file from the root of the repository.
=item include
If the "include" parameter is set, its command is ran, and should output
additional mrconfig file content. The content is included as if it were
part of the including file.
Unlike all other parameters, this parameter does not need to be placed
within a section.
B<mr> ships several libraries that can be included to add support for
additional version control type things (unison, git-svn, git-fake-bare,
git-subtree). To include them all, you could use:
include = cat /usr/share/mr/*
See the individual files for details.
=item deleted
If the "deleted" parameter is set and its command returns true, then
B<mr> will treat the repository as deleted. It won't ever actually delete
the repository, but it will warn if it sees the repository's directory.
This is useful when one mrconfig file is shared among multiple machines,
to keep track of and remember to delete old repositories.
=item lib
The "lib" parameter can specify some shell code that will be run
before each command, this can be a useful way to define shell
functions for other commands to use.
Unlike most other parameters, this can be specified multiple times, in
which case the chunks of shell code are accumulatively concatenated
together.
=item fixups
If the "fixups" parameter is set, its command is run whenever a repository
is checked out, or updated. This provides an easy way to do things
like permissions fixups, or other tweaks to the repository content,
whenever the repository is changed.
=item VCS_action
When looking for a command to run for a given action, mr first looks for
a parameter with the same name as the action. If that is not found, it
looks for a parameter named "VCS_action" (substituting in the name of the
version control system and the action).
Internally, mr has settings for "git_update", "svn_update", etc. To change
the action that is performed for a given version control system, you can
override these VCS specific actions. To add a new version control system,
you can just add VCS specific actions for it.
=item pre_ and post_
If a "pre_action" parameter is set, its command is run before mr performs the
specified action. Similarly, "post_action" parameters are run after mr
successfully performs the specified action. For example, "pre_commit" is
run before committing; "post_update" is run after updating.
=item _append
Any parameter can be suffixed with C<_append>, to add an additional value
to the existing value of the parameter. In this way, actions
can be constructed accumulatively.
=item VCS_test
The name of the version control system is itself determined by
running each defined "VCS_test" action, until one succeeds.
=back
=head1 UNTRUSTED MRCONFIG FILES
Since mrconfig files can contain arbitrary shell commands, they can do
anything. This flexibility is good, but it also allows a malicious mrconfig
file to delete your whole home directory. Such a file might be contained
inside a repository that your main F<~/.mrconfig> checks out. To
avoid worries about evil commands in a mrconfig file, mr defaults to
reading all mrconfig files other than the main F<~/.mrconfig> in untrusted
mode. In untrusted mode, mrconfig files are limited to running only known
safe commands (like "git clone") in a carefully checked manner.
To configure mr to trust other mrconfig files, list them in F<~/.mrtrust>.
One mrconfig file should be listed per line. Either the full pathname
should be listed, or the pathname can start with F<~/> to specify a file
relative to your home directory.
=head1 OFFLINE LOG FILE
The F<~/.mrlog> file contains commands that mr has remembered to run later,
due to being offline. You can delete or edit this file to remove commands,
or even to add other commands for 'mr online' to run. If the file is
present, mr assumes it is in offline mode.
=head1 EXTENSIONS
mr can be extended to support things such as unison and git-svn. Some
files providing such extensions are available in F</usr/share/mr/>. See
the documentation in the files for details about using them.
=head1 EXIT STATUS
mr returns nonzero if a command failed in any of the repositories.
=head1 AUTHOR
Copyright 2007-2011 Joey Hess <[email protected]>
Licensed under the GNU GPL version 2 or higher.
http://kitenet.net/~joey/code/mr/
=cut
use warnings;
use strict;
use Getopt::Long;
use Cwd qw(getcwd abs_path);
# things that can happen when mr runs a command
use constant {
OK => 0,
FAILED => 1,
SKIPPED => 2,
ABORT => 3,
};
use constant COLORS => {
black => 0,
red => 1,
green => 2,
yellow => 3,
blue => 4,
magenta => 5,
cyan => 6,
white => 7,
};
# configurables
my $config_overridden=0;
my $verbosity=length($ENV{MR_DEFAULT_VERBOSITY} || '') ? $ENV{MR_DEFAULT_VERBOSITY} : 2;
my $quiet=0;
my $stats=0;
my $force=0;
my $insecure=0;
my $interactive=0;
my $max_depth;
my $no_chdir=0;
my $jobs=1;
my $trust_all=0;
my $working_directory=getcwd();
my $repos="";
my $HOME_MR_CONFIG = "$ENV{HOME}/.mrconfig";
$ENV{MR_CONFIG}=find_mrconfig();
# globals :-(
my %config;
my %configfiles;
my %repos; # maps repo short names to [ $dir, $section ] arrayrefs.
my %knownactions;
my %alias;
my (@ok, @failed, @skipped);
main();
sub abbrev_home {
$_[0] =~ s!(^|\s|\e[\d[\d;]+m)$ENV{HOME}/!$1~/!g;
}
sub debug {
my ($level, $output) = @_;
abbrev_home($output);
print $output if $verbosity >= $level;
}
sub awarn {
my ($action, $message) = @_;
warn "mr $action: $message\n";
}
sub error {
my ($message) = @_;
warn color('red', "mr error: $message") . "\n";
}
sub color {
my $color=shift;
my $msg=shift;
return $msg unless $color && defined $msg && -t 1;
my $bold = $color =~ s/\s*bold\s*//i;
die "Unrecognised color $color\n" unless COLORS->{$color};
my $on = sprintf "\e[%s3%sm", $bold ? '1;' : '', COLORS->{$color};
my $off = "\e[0m";
return "$on$msg$off";
}
sub shellquote {
my $i=shift;
$i=~s/'/'"'"'/g;
return "'$i'";
}
# Runs a shell command using a supplied function.
# The lib will be included in the shell command line, and any params
# will be available in the shell as $1, $2, etc.
my $lastlib;
sub runsh {
my ($action, $topdir, $subdir, $command, $params, $runner) = @_;
# optimisation: avoid running the shell for true and false
if ($command =~ /^\s*true\s*$/) {
$?=0;
return 0;
}
elsif ($command =~ /^\s*false\s*$/) {
$?=0;
return 1;
}
my $quotedparams=join(" ", (map { shellquote($_) } @$params));
my $lib=exists $config{$topdir}{$subdir}{lib} ?
$config{$topdir}{$subdir}{lib}."\n" : "";
if (! defined $lastlib || $lastlib ne $lib) {
debug(5, "mr library now: >>$lib<<");
$lastlib=$lib;
}
my $shellcode="set -e;".$lib.
"my_sh(){ $command\n }; my_sh $quotedparams";
debug(4, "mr $action: running >>$command<< with params >>$quotedparams<<\n");
my $ret=$runner->($shellcode);
debug(4, "mr $action: >>$command<< returned $ret\n");
return $ret;
}
my %perl_cache;
sub perl {
my $id=shift;
my $s=shift;
if ($s =~ m/^perl:\s+(.*)/s) {
return $perl_cache{$1} if exists $perl_cache{$1};
my $sub=eval "sub {$1}";
if (! defined $sub) {
print STDERR "mr: bad perl code in $id: $@\n";
}
return $perl_cache{$1} = $sub;
}
return undef;
}
my %vcs;
sub vcs_test {
my ($action, $dir, $topdir, $subdir) = @_;
if (exists $vcs{$dir}) {
return $vcs{$dir};
}
my $test="";
my %perltest;
foreach my $vcs_test (
sort {
length $a <=> length $b
||
$a cmp $b
} grep { /_test$/ } keys %{$config{$topdir}{$subdir}}) {
my ($vcs)=$vcs_test =~ /(.*)_test/;
my $p=perl($vcs_test, $config{$topdir}{$subdir}{$vcs_test});
if (defined $p) {
$perltest{$vcs}=$p;
}
else {
$test="my_$vcs_test() {\n$config{$topdir}{$subdir}{$vcs_test}\n}\n".$test;
$test.="if my_$vcs_test; then echo $vcs; fi\n";
}
}
my @vcs;
foreach my $vcs (keys %perltest) {
if ($perltest{$vcs}->()) {
push @vcs, $vcs;
}
}
debug(4, "VCS for $dir found via Perl: @vcs\n");
push @vcs, split(/\n/,
runsh("vcs test for $subdir", $topdir, $subdir, $test, [], sub {
my $sh=shift;
my $ret=`$sh`;
return $ret;
})) if length $test;
if (@vcs > 1) {
awarn($action, "found multiple possible repository types (@vcs) for ".fulldir($topdir, $subdir));
return undef;
}
if (! @vcs) {
return $vcs{$dir}=undef;
}
else {
return $vcs{$dir}=$vcs[0];
}
}
sub findcommand {
my ($action, $dir, $topdir, $subdir, $is_checkout) = @_;
if (exists $config{$topdir}{$subdir}{$action}) {
debug(5, "Found specific $action action for $subdir in $topdir\n");
return $config{$topdir}{$subdir}{$action};
}
if ($is_checkout) {
return undef;
}
my $vcs=vcs_test(@_);
if (defined $vcs &&
exists $config{$topdir}{$subdir}{$vcs."_".$action}) {
debug(5, "Found specific ${vcs}_$action action for $subdir in $topdir\n");
return $config{$topdir}{$subdir}{$vcs."_".$action};
}
else {
return undef;
}
}
sub fulldir {
my ($topdir, $subdir) = @_;
return $subdir =~ /^\// ? $subdir : $topdir.$subdir;
}
sub action {
my ($action, $dir, $topdir, $subdir, $force_checkout) = @_;
my $fulldir=fulldir($topdir, $subdir);
my $checkout_dir;
$ENV{MR_CONFIG}=$configfiles{$topdir};
my $is_checkout=($action eq 'checkout');
my $is_update=($action =~ /update/);
($ENV{MR_REPO}=$dir) =~ s!/$!!;
$ENV{MR_NAME} = $config{$topdir}{$subdir}{effective_name}
if exists $config{$topdir}{$subdir}{effective_name};
$ENV{MR_ACTION}=$action;
foreach my $testname ("skip", "deleted") {
next if $force && $testname eq "skip";
my $testcommand=findcommand($testname, $dir, $topdir, $subdir, $is_checkout);
if (defined $testcommand) {
my $ret=runsh "$testname test", $topdir, $subdir,
$testcommand, [$action],
sub { system(shift()) };
if ($ret != 0) {
if (($? & 127) == 2) {
awarn($action, "interrupted");
return ABORT;
}
elsif ($? & 127) {
awarn($action, "$testname test received signal " . ($? & 127));
return ABORT;
}
}
if ($ret >> 8 == 0) {
if ($testname eq "deleted") {
if (-d $dir) {
error("$dir should be deleted yet still exists");
return FAILED;
}
}
debug(2, "mr $action: " . color('yellow', "skipped $dir\n"));
return SKIPPED;
}
}
}
if ($is_checkout) {
$checkout_dir=$dir;
if (! $force_checkout) {
if (-d $dir) {
debug(3, "mr $action: " .
color('yellow', "$dir already exists, skipping checkout\n"));
return SKIPPED;
}
$dir=~s/^(.*)\/[^\/]+\/?$/$1/;
}
}
elsif ($is_update) {
if (! -d $dir) {
return action("checkout", $dir, $topdir, $subdir);
}
}
my $command=findcommand($action, $dir, $topdir, $subdir, $is_checkout);
if ($is_checkout && ! -d $dir) {
debug(3, "mr $action: creating parent directory $dir\n");
system("mkdir", "-p", $dir);
}
if (! $no_chdir && ! chdir($dir)) {
awarn($action, "failed to chdir to $dir: $!");
return FAILED;
}
elsif (! defined $command) {
debug(5, "Didn't find $action command for $subdir in $topdir");
my $vcs=vcs_test(@_);
if (! defined $vcs) {
awarn($action, "unknown repository type and no defined $action command for $fulldir");
return FAILED;
}
else {
awarn($action, "no defined action for $vcs repository $fulldir, skipping");
return SKIPPED;
}
}
else {
my $actionmsg;
if (! $no_chdir) {
$actionmsg="mr $action: $fulldir";
}
else {
my $s=$working_directory;
$s=~s/^\Q$fulldir\E\/?//;
$actionmsg="mr $action: $fulldir (in subdir $s)";
}
my $hookret=hook("pre_$action", $topdir, $subdir);
return $hookret if $hookret != OK;
my $ret=runsh "$action for $subdir", $topdir, $subdir,
$command, \@ARGV, sub {
my $sh=shift;
my $cwd = getcwd();
my $ret;
if ($verbosity == 0) {
my $output = qx/$sh 2>&1/;
$ret = $?;
if ($ret != 0) {
action_header($actionmsg);
warn $output;
}
}
else {
action_header($actionmsg);
$ret = system($sh);
}
unless ($is_checkout) {
# Some actions (e.g. update) might want to
# recreate the repo directory from scratch, in
# which case we need to chdir to the new
# inode, in order to avoid warnings
# like: "shell-init: error retrieving current
# directory: getcwd: cannot access parent
# directories: No such file or directory"
if (! chdir $cwd) {
die "Couldn't restore cwd to $cwd: $!\n"
. "Did $action action remove it?\n";
}
}
return $ret;
};
if ($ret != 0) {
if (($? & 127) == 2) {
awarn($action, "interrupted");
return ABORT;
}
elsif ($? & 127) {
awarn($action, "received signal " . ($? & 127));
return ABORT;
}
awarn($action, "failed ($ret)") if $verbosity >= 1;
if ($ret >> 8 != 0) {
awarn($action, "command failed");
if (-e "$ENV{HOME}/.mrlog" && $action ne 'remember') {
# recreate original command line to
# remember, and avoid recursing
my @orig=@ARGV;
@ARGV=('-n', $action, @orig);
action("remember", $dir, $topdir, $subdir);
@ARGV=@orig;
}
}
elsif ($ret != 0) {
awarn($action, "command died ($ret)");
}
return FAILED;
}
else {
if ($is_checkout && ! -d $dir) {
awarn($action, "$dir missing after checkout");;
return FAILED;
}
my $ret=hook("post_$action", $topdir, $subdir);
return $ret if $ret != OK;
if ($is_checkout || $is_update) {
if ($is_checkout && ! $no_chdir) {
if (! chdir($checkout_dir)) {
print STDERR "mr $action: failed to chdir to $checkout_dir: $!\n";
return FAILED;
}
}
my $ret=hook("fixups", $topdir, $subdir);
return $ret if $ret != OK;