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index f994443c6fa16257b9b6a44abfc999d2ed25e601..7bac16e9463a0d0119218458b853570be6188ff4 100755 (executable)
--- a/git-cvsexportcommit.perl
+++ b/git-cvsexportcommit.perl
#!/usr/bin/perl -w
+# Known limitations:
+# - does not propagate permissions
+# - tells "ready for commit" even when things could not be completed
+# (not sure this is true anymore, more testing is needed)
+# - does not handle whitespace in pathnames at all.
+
use strict;
use Getopt::Std;
use File::Temp qw(tempdir);
use Data::Dumper;
-use File::Basename qw(basename);
+use File::Basename qw(basename dirname);
unless ($ENV{GIT_DIR} && -r $ENV{GIT_DIR}){
die "GIT_DIR is not defined or is unreadable";
}
-our ($opt_h, $opt_p, $opt_v, $opt_c, $opt_f, $opt_m );
+our ($opt_h, $opt_p, $opt_v, $opt_c, $opt_f, $opt_a, $opt_m );
-getopts('hpvcfm:');
+getopts('hpvcfam:');
$opt_h && usage();
TMPDIR => 1,
CLEANUP => 1);
-print Dumper(@ARGV);
# resolve target commit
my $commit;
$commit = pop @ARGV;
# find parents from the commit itself
my @commit = safe_pipe_capture('git-cat-file', 'commit', $commit);
my @parents;
-foreach my $p (@commit) {
- if ($p =~ m/^$/) { # end of commit headers, we're done
- last;
+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 '') {
+ $stage = 'msg';
+ next;
}
- if ($p =~ m/^parent (\w{40})$/) { # found a parent
- push @parents, $1;
+
+ if ($stage eq 'headers') {
+ if ($line =~ m/^parent (\w{40})$/) { # 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 = $line;
+ }
}
}
if ($parent) {
+ my $found;
# double check that it's a valid parent
foreach my $p (@parents) {
- my $found;
if ($p eq $parent) {
$found = 1;
last;
}; # found it
- die "Did not find $parent in the parents for this commit!";
}
+ die "Did not find $parent in the parents for this commit!" if !$found;
} 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];
# grab the commit message
open(MSG, ">.msg") or die "Cannot open .msg for writing";
-print MSG $opt_m;
+if ($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;
-`git-cat-file commit $commit | sed -e '1,/^\$/d' >> .msg`;
-$? && die "Error extracting the commit message";
-
-my (@afiles, @dfiles, @mfiles);
+my (@afiles, @dfiles, @mfiles, @dirs);
my @files = safe_pipe_capture('git-diff-tree', '-r', $parent, $commit);
#print @files;
$? && die "Error in git-diff-tree";
chomp $f;
my @fields = split(m!\s+!, $f);
if ($fields[4] eq 'A') {
- push @afiles, $fields[5];
+ my $path = $fields[5];
+ push @afiles, $path;
+ # add any needed parent directories
+ $path = dirname $path;
+ while (!-d $path and ! grep { $_ eq $path } @dirs) {
+ unshift @dirs, $path;
+ $path = dirname $path;
+ }
}
if ($fields[4] eq 'M') {
push @mfiles, $fields[5];
}
- if ($fields[4] eq 'R') {
+ if ($fields[4] eq 'D') {
push @dfiles, $fields[5];
}
}
+my (@binfiles, @abfiles, @dbfiles, @bfiles, @mbfiles);
+@binfiles = grep m/^Binary files/, safe_pipe_capture('git-diff-tree', '-p', $parent, $commit);
+map { chomp } @binfiles;
+@abfiles = grep s/^Binary files \/dev\/null and b\/(.*) differ$/$1/, @binfiles;
+@dbfiles = grep s/^Binary files a\/(.*) and \/dev\/null differ$/$1/, @binfiles;
+@mbfiles = grep s/^Binary files a\/(.*) and b\/(.*) differ$/$1/, @binfiles;
+push @bfiles, @abfiles;
+push @bfiles, @dbfiles;
+push @bfiles, @mbfiles;
+push @mfiles, @mbfiles;
+
$opt_v && print "The commit affects:\n ";
$opt_v && print join ("\n ", @afiles,@mfiles,@dfiles) . "\n\n";
undef @files; # don't need it anymore
# check that the files are clean and up to date according to cvs
my $dirty;
+foreach my $d (@dirs) {
+ if (-e $d) {
+ $dirty = 1;
+ warn "$d exists and is not a directory!\n";
+ }
+}
foreach my $f (@afiles) {
# This should return only one value
+ if ($f =~ m,(.*)/[^/]*$,) {
+ my $p = $1;
+ next if (grep { $_ eq $p } @dirs);
+ }
my @status = grep(m/^File/, safe_pipe_capture('cvs', '-q', 'status' ,$f));
if (@status > 1) { warn 'Strange! cvs status returned more than one line?'};
- unless ($status[0] =~ m/Status: Unknown$/) {
+ if (-d dirname $f and $status[0] !~ m/Status: Unknown$/
+ and $status[0] !~ m/^File: no file /) {
$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: $status[0]\n";
}
}
+
foreach my $f (@mfiles, @dfiles) {
# TODO:we need to handle removed in cvs
my @status = grep(m/^File/, safe_pipe_capture('cvs', '-q', 'status' ,$f));
###
+print "Creating new directories\n";
+foreach my $d (@dirs) {
+ unless (mkdir $d) {
+ warn "Could not mkdir $d: $!";
+ $dirty = 1;
+ }
+ `cvs add $d`;
+ if ($?) {
+ $dirty = 1;
+ warn "Failed to cvs add directory $d -- you may need to do it manually";
+ }
+}
+
print "'Patching' binary files\n";
-my @bfiles = grep(m/^Binary/, safe_pipe_capture('git-diff-tree', '-p', $parent, $commit));
-@bfiles = map { chomp } @bfiles;
foreach my $f (@bfiles) {
# check that the file in cvs matches the "old" file
- # extract the file to $tmpdir and comparre with cmp
- my $tree = safe_pipe_capture('git-rev-parse', "$parent^{tree}");
- chomp $tree;
- my $blob = `git-ls-tree $tree "$f" | cut -f 1 | cut -d ' ' -f 3`;
- chomp $blob;
- `git-cat-file blob $blob > $tmpdir/blob`;
- if (system('cmp', '-q', $f, "$tmpdir/blob")) {
- warn "Binary file $f in CVS does not match parent.\n";
- $dirty = 1;
- next;
+ # extract the file to $tmpdir and compare with cmp
+ if (not(grep { $_ eq $f } @afiles)) {
+ my $tree = safe_pipe_capture('git-rev-parse', "$parent^{tree}");
+ chomp $tree;
+ my $blob = `git-ls-tree $tree "$f" | cut -f 1 | cut -d ' ' -f 3`;
+ chomp $blob;
+ `git-cat-file blob $blob > $tmpdir/blob`;
+ if (system('cmp', '-s', $f, "$tmpdir/blob")) {
+ warn "Binary file $f in CVS does not match parent.\n";
+ if (not $opt_f) {
+ $dirty = 1;
+ next;
+ }
+ }
+ }
+ if (not(grep { $_ eq $f } @dfiles)) {
+ my $tree = safe_pipe_capture('git-rev-parse', "$commit^{tree}");
+ chomp $tree;
+ my $blob = `git-ls-tree $tree "$f" | cut -f 1 | cut -d ' ' -f 3`;
+ chomp $blob;
+ # replace with the new file
+ `git-cat-file blob $blob > $f`;
}
-
- # replace with the new file
- `git-cat-file blob $blob > $f`;
# TODO: something smart with file modes
my $fuzz = $opt_p ? 0 : 2;
print "Patching non-binary files\n";
-print `(git-diff-tree -p $parent -p $commit | patch -p1 -F $fuzz ) 2>&1`;
+
+if (scalar(@afiles)+scalar(@dfiles)+scalar(@mfiles) != scalar(@bfiles)) {
+ print `(git-diff-tree -p $parent -p $commit | patch -p1 -F $fuzz ) 2>&1`;
+}
my $dirtypatch = 0;
if (($? >> 8) == 2) {
}
foreach my $f (@afiles) {
- system('cvs', 'add', $f);
+ if (grep { $_ eq $f } @bfiles) {
+ system('cvs', 'add','-kb',$f);
+ } else {
+ system('cvs', 'add', $f);
+ }
if ($?) {
$dirty = 1;
warn "Failed to cvs add $f -- you may need to do it manually";
}
print "Commit to CVS\n";
+print "Patch: $title\n";
my $commitfiles = join(' ', @afiles, @mfiles, @dfiles);
my $cmd = "cvs commit -F .msg $commitfiles";
}
}
-# An alterative to `command` that allows input to be passed as an array
+# 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 {