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[dh-make-perl] / dev / arm / libtest-harness-perl / libtest-harness-perl-3.12 / lib / TAP / Parser / YAMLish / Writer.pm

diff --git a/dev/arm/libtest-harness-perl/libtest-harness-perl-3.12/lib/TAP/Parser/YAMLish/Writer.pm b/dev/arm/libtest-harness-perl/libtest-harness-perl-3.12/lib/TAP/Parser/YAMLish/Writer.pm
new file mode 100644 (file)
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+++ b/dev/arm/libtest-harness-perl/libtest-harness-perl-3.12/lib/TAP/Parser/YAMLish/Writer.pm
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+package TAP::Parser::YAMLish::Writer;
+
+use strict;
+use vars qw($VERSION @ISA);
+
+use TAP::Object ();
+
+@ISA     = 'TAP::Object';
+$VERSION = '3.12';
+
+my $ESCAPE_CHAR = qr{ [ \x00-\x1f \" ] }x;
+my $ESCAPE_KEY  = qr{ (?: ^\W ) | $ESCAPE_CHAR }x;
+
+my @UNPRINTABLE = qw(
+  z    x01  x02  x03  x04  x05  x06  a
+  x08  t    n    v    f    r    x0e  x0f
+  x10  x11  x12  x13  x14  x15  x16  x17
+  x18  x19  x1a  e    x1c  x1d  x1e  x1f
+);
+
+# new() implementation supplied by TAP::Object
+
+sub write {
+    my $self = shift;
+
+    die "Need something to write"
+      unless @_;
+
+    my $obj = shift;
+    my $out = shift || \*STDOUT;
+
+    die "Need a reference to something I can write to"
+      unless ref $out;
+
+    $self->{writer} = $self->_make_writer($out);
+
+    $self->_write_obj( '---', $obj );
+    $self->_put('...');
+
+    delete $self->{writer};
+}
+
+sub _make_writer {
+    my $self = shift;
+    my $out  = shift;
+
+    my $ref = ref $out;
+
+    if ( 'CODE' eq $ref ) {
+        return $out;
+    }
+    elsif ( 'ARRAY' eq $ref ) {
+        return sub { push @$out, shift };
+    }
+    elsif ( 'SCALAR' eq $ref ) {
+        return sub { $$out .= shift() . "\n" };
+    }
+    elsif ( 'GLOB' eq $ref || 'IO::Handle' eq $ref ) {
+        return sub { print $out shift(), "\n" };
+    }
+
+    die "Can't write to $out";
+}
+
+sub _put {
+    my $self = shift;
+    $self->{writer}->( join '', @_ );
+}
+
+sub _enc_scalar {
+    my $self = shift;
+    my $val  = shift;
+    my $rule = shift;
+
+    return '~' unless defined $val;
+
+    if ( $val =~ /$rule/ ) {
+        $val =~ s/\\/\\\\/g;
+        $val =~ s/"/\\"/g;
+        $val =~ s/ ( [\x00-\x1f] ) / '\\' . $UNPRINTABLE[ ord($1) ] /gex;
+        return qq{"$val"};
+    }
+
+    if ( length($val) == 0 or $val =~ /\s/ ) {
+        $val =~ s/'/''/;
+        return "'$val'";
+    }
+
+    return $val;
+}
+
+sub _write_obj {
+    my $self   = shift;
+    my $prefix = shift;
+    my $obj    = shift;
+    my $indent = shift || 0;
+
+    if ( my $ref = ref $obj ) {
+        my $pad = '  ' x $indent;
+        if ( 'HASH' eq $ref ) {
+            if ( keys %$obj ) {
+                $self->_put($prefix);
+                for my $key ( sort keys %$obj ) {
+                    my $value = $obj->{$key};
+                    $self->_write_obj(
+                        $pad . $self->_enc_scalar( $key, $ESCAPE_KEY ) . ':',
+                        $value, $indent + 1
+                    );
+                }
+            }
+            else {
+                $self->_put( $prefix, ' {}' );
+            }
+        }
+        elsif ( 'ARRAY' eq $ref ) {
+            if (@$obj) {
+                $self->_put($prefix);
+                for my $value (@$obj) {
+                    $self->_write_obj(
+                        $pad . '-', $value,
+                        $indent + 1
+                    );
+                }
+            }
+            else {
+                $self->_put( $prefix, ' []' );
+            }
+        }
+        else {
+            die "Don't know how to enocde $ref";
+        }
+    }
+    else {
+        $self->_put( $prefix, ' ', $self->_enc_scalar( $obj, $ESCAPE_CHAR ) );
+    }
+}
+
+1;
+
+__END__
+
+=pod
+
+=head1 NAME
+
+TAP::Parser::YAMLish::Writer - Write YAMLish data
+
+=head1 VERSION
+
+Version 3.12
+
+=head1 SYNOPSIS
+
+    use TAP::Parser::YAMLish::Writer;
+    
+    my $data = {
+        one => 1,
+        two => 2,
+        three => [ 1, 2, 3 ],
+    };
+    
+    my $yw = TAP::Parser::YAMLish::Writer->new;
+    
+    # Write to an array...
+    $yw->write( $data, \@some_array );
+    
+    # ...an open file handle...
+    $yw->write( $data, $some_file_handle );
+    
+    # ...a string ...
+    $yw->write( $data, \$some_string );
+    
+    # ...or a closure
+    $yw->write( $data, sub {
+        my $line = shift;
+        print "$line\n";
+    } );
+
+=head1 DESCRIPTION
+
+Encodes a scalar, hash reference or array reference as YAMLish.
+
+=head1 METHODS
+
+=head2 Class Methods
+
+=head3 C<new>
+
+ my $writer = TAP::Parser::YAMLish::Writer->new;
+
+The constructor C<new> creates and returns an empty
+C<TAP::Parser::YAMLish::Writer> object.
+
+=head2 Instance Methods
+
+=head3 C<write>
+
+ $writer->write($obj, $output );
+
+Encode a scalar, hash reference or array reference as YAML.
+
+    my $writer = sub {
+        my $line = shift;
+        print SOMEFILE "$line\n";
+    };
+    
+    my $data = {
+        one => 1,
+        two => 2,
+        three => [ 1, 2, 3 ],
+    };
+    
+    my $yw = TAP::Parser::YAMLish::Writer->new;
+    $yw->write( $data, $writer );
+
+
+The C< $output > argument may be:
+
+=over
+
+=item * a reference to a scalar to append YAML to
+
+=item * the handle of an open file
+
+=item * a reference to an array into which YAML will be pushed
+
+=item * a code reference
+
+=back
+
+If you supply a code reference the subroutine will be called once for
+each line of output with the line as its only argument. Passed lines
+will have no trailing newline.
+
+=head1 AUTHOR
+
+Andy Armstrong, <andy@hexten.net>
+
+=head1 SEE ALSO
+
+L<YAML::Tiny>, L<YAML>, L<YAML::Syck>, L<Config::Tiny>, L<CSS::Tiny>,
+L<http://use.perl.org/~Alias/journal/29427>
+
+=head1 COPYRIGHT
+
+Copyright 2007-2008 Andy Armstrong.
+
+This program is free software; you can redistribute
+it and/or modify it under the same terms as Perl itself.
+
+The full text of the license can be found in the
+LICENSE file included with this module.
+
+=cut
+