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package RTF::Encode; |
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# vim:ts=4:shiftwidth=4:expandtab |
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# ABSTRACT: Escapes strings into RTF |
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use strict; |
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use warnings; |
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our $VERSION = '1.01_01'; |
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=head1 NAME |
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RTF::Encode - Escapes strings into RTF |
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=head1 SYNOPSIS |
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use RTF::Encode qw/ encode_rtf /; |
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print encode_rtf("Smiling cat with heart shaped eyes, ".chr(0x1f63b); |
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=cut |
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use Encode qw/ encode /; |
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use parent qw/ Exporter /; |
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our (@EXPORT_OK); |
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BEGIN { |
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@EXPORT_OK = qw(encode_rtf); |
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} |
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=head2 encode_rtf |
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my $rtf = encode_rtf($unicode); |
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This function takes a string, which may contain Unicode characters, and |
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returns a string escaped to be used in an RTF file. It can be used to safely |
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insert arbitrary text into a template RTF file, perhaps via L. |
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C<\uN> escaping is always used, even for characters less than 255, because |
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the alternative, C<\'hh> needs to know the current code page. |
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Line breaks are encoded as line breaks, C<\line>, not as paragraphs. |
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C<\ucN> is not generated, it does not appear to be necessary. |
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=cut |
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sub encode_rtf { |
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my ($string) = @_; |
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my $output = ""; |
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while ($string ne "") { |
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$string =~ /^([A-Za-z0-9_\.\, ]*)(.?)(.*)$/s or die "regexp unexpectedly failed for '$string'"; |
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$output .= $1; |
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$string = $3; |
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if (!defined $2) { |
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} |
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elsif ($2 eq "\n") { |
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$output .= "\\line\n"; |
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} |
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elsif ($2 eq "\t") { |
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$output .= "\\tab "; |
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} |
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else { |
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my $char = $2; |
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my $utf16 = encode('UTF16-LE', $char, Encode::FB_CROAK); |
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my @shorts = unpack("s<*", $utf16); |
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foreach my $s (@shorts) { |
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$output .= "\\u$s\\'3f"; |
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} |
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} |
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} |
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return $output; |
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} |
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=head1 SPECIFICATION |
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L |
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=head1 SEE ALSO |
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=over |
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=item L |
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=back |
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=head1 AUTHOR |
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Dave Lambley |
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=head1 LICENSE |
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This is free software; you can redistribute it and/or modify it under |
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the same terms as the Perl 5 programming language system itself. |
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=cut |
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1; |