diff options
author | Norbert Preining <norbert@preining.info> | 2024-03-15 03:06:35 +0000 |
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committer | Norbert Preining <norbert@preining.info> | 2024-03-15 03:06:35 +0000 |
commit | 12679ab7d3c2a210f4123163671b532b8b55d5f9 (patch) | |
tree | 0060d13467186ad977f4e73488ee20dd6c0017ab /systems/texlive/tlnet/tlpkg/tlperl/site/lib/TAP/Parser/YAMLish/Writer.pm | |
parent | 62170822e034fdd3f81de7274835d0d3b0467100 (diff) |
CTAN sync 202403150306
Diffstat (limited to 'systems/texlive/tlnet/tlpkg/tlperl/site/lib/TAP/Parser/YAMLish/Writer.pm')
-rwxr-xr-x | systems/texlive/tlnet/tlpkg/tlperl/site/lib/TAP/Parser/YAMLish/Writer.pm | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/systems/texlive/tlnet/tlpkg/tlperl/site/lib/TAP/Parser/YAMLish/Writer.pm b/systems/texlive/tlnet/tlpkg/tlperl/site/lib/TAP/Parser/YAMLish/Writer.pm new file mode 100755 index 0000000000..a11a02a285 --- /dev/null +++ b/systems/texlive/tlnet/tlpkg/tlperl/site/lib/TAP/Parser/YAMLish/Writer.pm @@ -0,0 +1,263 @@ +package TAP::Parser::YAMLish::Writer; + +use strict; +use warnings; + +use base 'TAP::Object'; + +our $VERSION = '3.48'; + + # No EBCDIC support on early perls +*from_native = (ord "A" == 65 || $] < 5.008) + ? sub { return shift } + : sub { utf8::native_to_unicode(shift) }; + +my $ESCAPE_CHAR = qr{ [ [:cntrl:] \" ] }x; +my $ESCAPE_KEY = qr{ (?: ^\W ) | $ESCAPE_CHAR }x; + +my @UNPRINTABLE; +$UNPRINTABLE[$_] = sprintf("x%02x", from_native($_)) for 0 .. ord(" ") - 1; +$UNPRINTABLE[ord "\0"] = 'z'; +$UNPRINTABLE[ord "\a"] = 'a'; +$UNPRINTABLE[ord "\t"] = 't'; +$UNPRINTABLE[ord "\n"] = 'n'; +$UNPRINTABLE[ord "\cK"] = 'v'; +$UNPRINTABLE[ord "\f"] = 'f'; +$UNPRINTABLE[ord "\r"] = 'r'; +$UNPRINTABLE[ord "\e"] = 'e'; + +# 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/ ( [[:cntrl:]] ) / '\\' . $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 encode $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 3.48 + +=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 2007-2011 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 + |