annotate: Use qx{} for pipes on activestate.

Note: This needs someone to tell me what the value of $^O is on ActiveState.

Signed-off-by: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/git-annotate.perl b/git-annotate.perl
index ee8ff15..f9c2c6c 100755 (executable)
--- a/git-annotate.perl
+++ b/git-annotate.perl
@@ -431,8 +431,20 @@ sub gitvar_name {
     return join(' ', @field[0...(@field-4)]);
 }
 
-
 sub open_pipe {
+       if ($^O eq '##INSERT_ACTIVESTATE_STRING_HERE##') {
+               return open_pipe_activestate(@_);
+       } else {
+               return open_pipe_normal(@_);
+       }
+}
+
+sub open_pipe_activestate {
+       tie *fh, "Git::ActiveStatePipe", @_;
+       return *fh;
+}
+
+sub open_pipe_normal {
        my (@execlist) = @_;
 
        my $pid = open my $kid, "-|";
@@ -445,3 +457,32 @@ sub open_pipe {
 
        return $kid;
 }
+
+package Git::ActiveStatePipe;
+use strict;
+
+sub TIEHANDLE {
+       my ($class, @params) = @_;
+       my $cmdline = join " ", @params;
+       my  @data = qx{$cmdline};
+       bless { i => 0, data => \@data }, $class;
+}
+
+sub READLINE {
+       my $self = shift;
+       if ($self->{i} >= scalar @{$self->{data}}) {
+               return undef;
+       }
+       return $self->{'data'}->[ $self->{i}++ ];
+}
+
+sub CLOSE {
+       my $self = shift;
+       delete $self->{data};
+       delete $self->{i};
+}
+
+sub EOF {
+       my $self = shift;
+       return ($self->{i} >= scalar @{$self->{data}});
+}