+sub rcs_getmtime ($) {
+ error "rcs_getmtime is not implemented for cvs\n"; # TODO
+}
+
+
+# INTERNAL SUPPORT ROUTINES
+
+sub commitmessage (@) {
+ my %params=@_;
+
+ if (defined $params{session}) {
+ if (defined $params{session}->param("name")) {
+ return "web commit by ".
+ $params{session}->param("name").
+ (length $params{message} ? ": $params{message}" : "");
+ }
+ elsif (defined $params{session}->remote_addr()) {
+ return "web commit from ".
+ $params{session}->remote_addr().
+ (length $params{message} ? ": $params{message}" : "");
+ }
+ }
+ return $params{message};
+}
+
+sub cvs_info ($$) {
+ my $field=shift;
+ my $file=shift;
+
+ local $CWD = $config{srcdir};
+
+ my $info=`cvs status $file`;
+ my ($ret)=$info=~/^\s*$field:\s*(\S+)/m;
+ return $ret;
+}
+
+sub cvs_is_controlling {
+ my $dir=shift;
+ $dir=$config{srcdir} unless defined($dir);
+ return (-d "$dir/CVS") ? 1 : 0;
+}
+
+sub cvs_keyword_subst_args ($) {
+ my $file = shift;
+
+ local $CWD = $config{srcdir};
+
+ eval q{use File::MimeInfo};
+ error($@) if $@;
+ my $filemime = File::MimeInfo::default($file);
+ # if (-T $file) {
+
+ defined($filemime) && $filemime eq 'text/plain'
+ ? return ('-kkv', $file)
+ : return ('-kb', $file);
+}
+
+sub cvs_runcvs(@) {
+ my @cmd = @_;
+ unshift @cmd, 'cvs', '-Q';
+
+ # CVS can't operate outside a srcdir, so we're always setting $CWD.
+ # "local $CWD" restores the previous value when we go out of scope.
+ # Usually that's correct. But if we're removing the last file from
+ # a directory, the post-commit hook will exec in a working directory
+ # that's about to not exist (CVS will prune it).
+ #
+ # chdir() manually here, so we can selectively not chdir() back.
+
+ my $oldcwd = $CWD;
+ chdir($config{srcdir});
+
+ eval q{
+ use IPC::Open3;
+ use Symbol qw(gensym);
+ use IO::File;
+ };
+ error($@) if $@;
+
+ my $cvsout = '';
+ my $cvserr = '';
+ local *CATCHERR = IO::File->new_tmpfile;
+ my $pid = open3(gensym(), \*CATCHOUT, ">&CATCHERR", @cmd);
+ while (my $l = <CATCHOUT>) {
+ $cvsout .= $l
+ unless 1;
+ }
+ waitpid($pid, 0);
+ my $ret = $? >> 8;
+ seek CATCHERR, 0, 0;
+ while (my $l = <CATCHERR>) {
+ $cvserr .= $l
+ unless $l =~ /^cvs commit: changing keyword expansion /;
+ }
+
+ print STDOUT $cvsout;
+ print STDERR $cvserr;
+
+ chdir($oldcwd) if -d $oldcwd;
+
+ return ($ret == 0) ? 1 : 0;
+}
+