diff options
Diffstat (limited to 'third_party/git/git-cvsexportcommit.perl')
| -rwxr-xr-x | third_party/git/git-cvsexportcommit.perl | 467 |
1 files changed, 0 insertions, 467 deletions
diff --git a/third_party/git/git-cvsexportcommit.perl b/third_party/git/git-cvsexportcommit.perl deleted file mode 100755 index 289d4bc684dc..000000000000 --- a/third_party/git/git-cvsexportcommit.perl +++ /dev/null @@ -1,467 +0,0 @@ -#!/usr/bin/perl - -use 5.008; -use strict; -use warnings; -use Getopt::Std; -use File::Temp qw(tempdir); -use Data::Dumper; -use File::Basename qw(basename dirname); -use File::Spec; -use Git; - -our ($opt_h, $opt_P, $opt_p, $opt_v, $opt_c, $opt_f, $opt_a, $opt_m, $opt_d, $opt_u, $opt_w, $opt_W, $opt_k); - -getopts('uhPpvcfkam:d:w:W'); - -$opt_h && usage(); - -die "Need at least one commit identifier!" unless @ARGV; - -# Get git-config settings -my $repo = Git->repository(); -$opt_w = $repo->config('cvsexportcommit.cvsdir') unless defined $opt_w; - -my $tmpdir = File::Temp::tempdir(CLEANUP => 1); -my $hash_algo = $repo->config('extensions.objectformat') || 'sha1'; -my $hexsz = $hash_algo eq 'sha256' ? 64 : 40; - -if ($opt_w || $opt_W) { - # Remember where GIT_DIR is before changing to CVS checkout - unless ($ENV{GIT_DIR}) { - # No GIT_DIR set. Figure it out for ourselves - my $gd =`git rev-parse --git-dir`; - chomp($gd); - $ENV{GIT_DIR} = $gd; - } - - # On MSYS, convert a Windows-style path to an MSYS-style path - # so that rel2abs() below works correctly. - if ($^O eq 'msys') { - $ENV{GIT_DIR} =~ s#^([[:alpha:]]):/#/$1/#; - } - - # Make sure GIT_DIR is absolute - $ENV{GIT_DIR} = File::Spec->rel2abs($ENV{GIT_DIR}); -} - -if ($opt_w) { - if (! -d $opt_w."/CVS" ) { - die "$opt_w is not a CVS checkout"; - } - chdir $opt_w or die "Cannot change to CVS checkout at $opt_w"; -} -unless ($ENV{GIT_DIR} && -r $ENV{GIT_DIR}){ - die "GIT_DIR is not defined or is unreadable"; -} - - -my @cvs; -if ($opt_d) { - @cvs = ('cvs', '-d', $opt_d); -} else { - @cvs = ('cvs'); -} - -# resolve target commit -my $commit; -$commit = pop @ARGV; -$commit = safe_pipe_capture('git', 'rev-parse', '--verify', "$commit^0"); -chomp $commit; -if ($?) { - die "The commit reference $commit did not resolve!"; -} - -# resolve what parent we want -my $parent; -if (@ARGV) { - $parent = pop @ARGV; - $parent = safe_pipe_capture('git', 'rev-parse', '--verify', "$parent^0"); - chomp $parent; - if ($?) { - die "The parent reference did not resolve!"; - } -} - -# find parents from the commit itself -my @commit = safe_pipe_capture('git', 'cat-file', 'commit', $commit); -my @parents; -my $committer; -my $author; -my $stage = 'headers'; # headers, msg -my $title; -my $msg = ''; - -foreach my $line (@commit) { - chomp $line; - if ($stage eq 'headers' && $line eq '') { - $stage = 'msg'; - next; - } - - if ($stage eq 'headers') { - if ($line =~ m/^parent ([0-9a-f]{$hexsz})$/) { # found a parent - push @parents, $1; - } elsif ($line =~ m/^author (.+) \d+ [-+]\d+$/) { - $author = $1; - } elsif ($line =~ m/^committer (.+) \d+ [-+]\d+$/) { - $committer = $1; - } - } else { - $msg .= $line . "\n"; - unless ($title) { - $title = $line; - } - } -} - -my $noparent = "0" x $hexsz; -if ($parent) { - my $found; - # double check that it's a valid parent - foreach my $p (@parents) { - if ($p eq $parent) { - $found = 1; - last; - }; # found it - } - die "Did not find $parent in the parents for this commit!" if !$found and !$opt_P; -} else { # we don't have a parent from the cmdline... - if (@parents == 1) { # it's safe to get it from the commit - $parent = $parents[0]; - } elsif (@parents == 0) { # there is no parent - $parent = $noparent; - } else { # cannot choose automatically from multiple parents - die "This commit has more than one parent -- please name the parent you want to use explicitly"; - } -} - -my $go_back_to = 0; - -if ($opt_W) { - $opt_v && print "Resetting to $parent\n"; - $go_back_to = `git symbolic-ref HEAD 2> /dev/null || - git rev-parse HEAD` || die "Could not determine current branch"; - system("git checkout -q $parent^0") && die "Could not check out $parent^0"; -} - -$opt_v && print "Applying to CVS commit $commit from parent $parent\n"; - -# grab the commit message -open(MSG, ">.msg") or die "Cannot open .msg for writing"; -if ($opt_m) { - print MSG $opt_m; -} -print MSG $msg; -if ($opt_a) { - print MSG "\n\nAuthor: $author\n"; - if ($author ne $committer) { - print MSG "Committer: $committer\n"; - } -} -close MSG; - -if ($parent eq $noparent) { - `git diff-tree --binary -p --root $commit >.cvsexportcommit.diff`;# || die "Cannot diff"; -} else { - `git diff-tree --binary -p $parent $commit >.cvsexportcommit.diff`;# || die "Cannot diff"; -} - -## apply non-binary changes - -# In pedantic mode require all lines of context to match. In normal -# mode, be compatible with diff/patch: assume 3 lines of context and -# require at least one line match, i.e. ignore at most 2 lines of -# context, like diff/patch do by default. -my $context = $opt_p ? '' : '-C1'; - -print "Checking if patch will apply\n"; - -my @stat; -open APPLY, "GIT_INDEX_FILE=$tmpdir/index git apply $context --summary --numstat<.cvsexportcommit.diff|" || die "cannot patch"; -@stat=<APPLY>; -close APPLY || die "Cannot patch"; -my (@bfiles,@files,@afiles,@dfiles); -chomp @stat; -foreach (@stat) { - push (@bfiles,$1) if m/^-\t-\t(.*)$/; - push (@files, $1) if m/^-\t-\t(.*)$/; - push (@files, $1) if m/^\d+\t\d+\t(.*)$/; - push (@afiles,$1) if m/^ create mode [0-7]+ (.*)$/; - push (@dfiles,$1) if m/^ delete mode [0-7]+ (.*)$/; -} -map { s/^"(.*)"$/$1/g } @bfiles,@files; -map { s/\\([0-7]{3})/sprintf('%c',oct $1)/eg } @bfiles,@files; - -# check that the files are clean and up to date according to cvs -my $dirty; -my @dirs; -foreach my $p (@afiles) { - my $path = dirname $p; - while (!-d $path and ! grep { $_ eq $path } @dirs) { - unshift @dirs, $path; - $path = dirname $path; - } -} - -# ... check dirs, -foreach my $d (@dirs) { - if (-e $d) { - $dirty = 1; - warn "$d exists and is not a directory!\n"; - } -} - -# ... query status of all files that we have a directory for and parse output of 'cvs status' to %cvsstat. -my @canstatusfiles; -foreach my $f (@files) { - my $path = dirname $f; - next if (grep { $_ eq $path } @dirs); - push @canstatusfiles, $f; -} - -my %cvsstat; -if (@canstatusfiles) { - if ($opt_u) { - my @updated = xargs_safe_pipe_capture([@cvs, 'update'], @canstatusfiles); - print @updated; - } - # "cvs status" reorders the parameters, notably when there are multiple - # arguments with the same basename. So be precise here. - - my %added = map { $_ => 1 } @afiles; - my %todo = map { $_ => 1 } @canstatusfiles; - - while (%todo) { - my @canstatusfiles2 = (); - my %fullname = (); - foreach my $name (keys %todo) { - my $basename = basename($name); - - # CVS reports files that don't exist in the current revision as - # "no file $basename" in its "status" output, so we should - # anticipate that. Totally unknown files will have a status - # "Unknown". However, if they exist in the Attic, their status - # will be "Up-to-date" (this means they were added once but have - # been removed). - $basename = "no file $basename" if $added{$basename}; - - $basename =~ s/^\s+//; - $basename =~ s/\s+$//; - - if (!exists($fullname{$basename})) { - $fullname{$basename} = $name; - push (@canstatusfiles2, $name); - delete($todo{$name}); - } - } - my @cvsoutput; - @cvsoutput = xargs_safe_pipe_capture([@cvs, 'status'], @canstatusfiles2); - foreach my $l (@cvsoutput) { - chomp $l; - next unless - my ($file, $status) = $l =~ /^File:\s+(.*\S)\s+Status: (.*)$/; - - my $fullname = $fullname{$file}; - print STDERR "Huh? Status '$status' reported for unexpected file '$file'\n" - unless defined $fullname; - - # This response means the file does not exist except in - # CVS's attic, so set the status accordingly - $status = "In-attic" - if $file =~ /^no file / - && $status eq 'Up-to-date'; - - $cvsstat{$fullname{$file}} = $status - if defined $fullname{$file}; - } - } -} - -# ... Validate that new files have the correct status -foreach my $f (@afiles) { - next unless defined(my $stat = $cvsstat{$f}); - - # This means the file has never been seen before - next if $stat eq 'Unknown'; - - # This means the file has been seen before but was removed - next if $stat eq 'In-attic'; - - $dirty = 1; - warn "File $f is already known in your CVS checkout -- perhaps it has been added by another user. Or this may indicate that it exists on a different branch. If this is the case, use -f to force the merge.\n"; - warn "Status was: $cvsstat{$f}\n"; -} - -# ... validate known files. -foreach my $f (@files) { - next if grep { $_ eq $f } @afiles; - # TODO:we need to handle removed in cvs - unless (defined ($cvsstat{$f}) and $cvsstat{$f} eq "Up-to-date") { - $dirty = 1; - warn "File $f not up to date but has status '$cvsstat{$f}' in your CVS checkout!\n"; - } - - # Depending on how your GIT tree got imported from CVS you may - # have a conflict between expanded keywords in your CVS tree and - # unexpanded keywords in the patch about to be applied. - if ($opt_k) { - my $orig_file ="$f.orig"; - rename $f, $orig_file; - open(FILTER_IN, "<$orig_file") or die "Cannot open $orig_file\n"; - open(FILTER_OUT, ">$f") or die "Cannot open $f\n"; - while (<FILTER_IN>) - { - my $line = $_; - $line =~ s/\$([A-Z][a-z]+):[^\$]+\$/\$$1\$/g; - print FILTER_OUT $line; - } - close FILTER_IN; - close FILTER_OUT; - } -} - -if ($dirty) { - if ($opt_f) { warn "The tree is not clean -- forced merge\n"; - $dirty = 0; - } else { - die "Exiting: your CVS tree is not clean for this merge."; - } -} - -print "Applying\n"; -if ($opt_W) { - system("git checkout -q $commit^0") && die "cannot patch"; -} else { - `GIT_INDEX_FILE=$tmpdir/index git apply $context --summary --numstat --apply <.cvsexportcommit.diff` || die "cannot patch"; -} - -print "Patch applied successfully. Adding new files and directories to CVS\n"; -my $dirtypatch = 0; - -# -# We have to add the directories in order otherwise we will have -# problems when we try and add the sub-directory of a directory we -# have not added yet. -# -# Luckily this is easy to deal with by sorting the directories and -# dealing with the shortest ones first. -# -@dirs = sort { length $a <=> length $b} @dirs; - -foreach my $d (@dirs) { - if (system(@cvs,'add',$d)) { - $dirtypatch = 1; - warn "Failed to cvs add directory $d -- you may need to do it manually"; - } -} - -foreach my $f (@afiles) { - if (grep { $_ eq $f } @bfiles) { - system(@cvs, 'add','-kb',$f); - } else { - system(@cvs, 'add', $f); - } - if ($?) { - $dirtypatch = 1; - warn "Failed to cvs add $f -- you may need to do it manually"; - } -} - -foreach my $f (@dfiles) { - system(@cvs, 'rm', '-f', $f); - if ($?) { - $dirtypatch = 1; - warn "Failed to cvs rm -f $f -- you may need to do it manually"; - } -} - -print "Commit to CVS\n"; -print "Patch title (first comment line): $title\n"; -my @commitfiles = map { unless (m/\s/) { '\''.$_.'\''; } else { $_; }; } (@files); -my $cmd = join(' ', @cvs)." commit -F .msg @commitfiles"; - -if ($dirtypatch) { - print "NOTE: One or more hunks failed to apply cleanly.\n"; - print "You'll need to apply the patch in .cvsexportcommit.diff manually\n"; - print "using a patch program. After applying the patch and resolving the\n"; - print "problems you may commit using:"; - print "\n cd \"$opt_w\"" if $opt_w; - print "\n $cmd\n"; - print "\n git checkout $go_back_to\n" if $go_back_to; - print "\n"; - exit(1); -} - -if ($opt_c) { - print "Autocommit\n $cmd\n"; - print xargs_safe_pipe_capture([@cvs, 'commit', '-F', '.msg'], @files); - if ($?) { - die "Exiting: The commit did not succeed"; - } - print "Committed successfully to CVS\n"; - # clean up - unlink(".msg"); -} else { - print "Ready for you to commit, just run:\n\n $cmd\n"; -} - -# clean up -unlink(".cvsexportcommit.diff"); - -if ($opt_W) { - system("git checkout $go_back_to") && die "cannot move back to $go_back_to"; - if (!($go_back_to =~ /^[0-9a-fA-F]{$hexsz}$/)) { - system("git symbolic-ref HEAD $go_back_to") && - die "cannot move back to $go_back_to"; - } -} - -# CVS version 1.11.x and 1.12.x sleeps the wrong way to ensure the timestamp -# used by CVS and the one set by subsequence file modifications are different. -# If they are not different CVS will not detect changes. -sleep(1); - -sub usage { - print STDERR <<END; -usage: GIT_DIR=/path/to/.git git cvsexportcommit [-h] [-p] [-v] [-c] [-f] [-u] [-k] [-w cvsworkdir] [-m msgprefix] [ parent ] commit -END - exit(1); -} - -# An alternative to `command` that allows input to be passed as an array -# to work around shell problems with weird characters in arguments -# if the exec returns non-zero we die -sub safe_pipe_capture { - my @output; - if (my $pid = open my $child, '-|') { - binmode($child, ":crlf"); - @output = (<$child>); - close $child or die join(' ',@_).": $! $?"; - } else { - exec(@_) or die "$! $?"; # exec() can fail the executable can't be found - } - return wantarray ? @output : join('',@output); -} - -sub xargs_safe_pipe_capture { - my $MAX_ARG_LENGTH = 65536; - my $cmd = shift; - my @output; - my $output; - while(@_) { - my @args; - my $length = 0; - while(@_ && $length < $MAX_ARG_LENGTH) { - push @args, shift; - $length += length($args[$#args]); - } - if (wantarray) { - push @output, safe_pipe_capture(@$cmd, @args); - } - else { - $output .= safe_pipe_capture(@$cmd, @args); - } - } - return wantarray ? @output : $output; -} |