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76 lines
2.1 KiB
Perl
76 lines
2.1 KiB
Perl
#!/usr/bin/env perl
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# quick and dirty
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use warnings;
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use strict;
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use HTML::Entities;
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my $STD = 'n1570.html';
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my $text;
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{
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local $/ = undef;
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open my $fh, "<", $STD or die "Could not open $STD: $!";
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$text = <$fh>;
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close $fh;
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}
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my $cfact_regex = qr/
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(
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\s+\S+\s+which\s+is.*?
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|\s+\S+\s+which\s+expand.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*(EXAMPLE\s*|NOTE\s*)?)An?\s+[^.]+describes.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*(EXAMPLE\s*|NOTE\s*))An?\s+[^.]+is.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*)[^.]+shall.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*)If.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*)[^.]+is\s+named.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*)[^.]+is\s+known.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*)[^.]+are\s+known.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*)[^.]+is\s+called.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*)[^.]+are\s+called.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*)When.*?
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|(?:\-\-\s+|\s+|<pre>\s*\d*\s*)The\s+\S+\s+function.*?
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)
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(?:\.(?!(\d|h))|<\/pre>)
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/msx;
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my @sections;
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while ($text =~ /^<h3>(.*?)<\/h3>/mg) {
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my $section = $1;
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$section =~ s/[\[\]]//g;
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unshift @sections, [pos $text, $section];
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}
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while ($text =~ /$cfact_regex/gms) {
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my $fact = $1;
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next unless length $fact;
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$fact =~ s/[\n\r]/ /g;
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$fact =~ s/ +/ /g;
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$fact =~ s/^\.\s*//;
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$fact =~ s/^\s*--\s*//;
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$fact =~ s/^\d+\s*//;
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$fact =~ s/- ([a-z])/-$1/g;
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$fact =~ s/\s+\././g;
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$fact =~ s/^\s*<pre>\s*\d*\s*//;
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$fact =~ s/^\s*EXAMPLE\s*//;
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$fact =~ s/^\s*NOTE\s*//;
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$fact =~ s/^\s+//;
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$fact =~ s/\s+$//;
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my $section = '';
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foreach my $s (@sections) {
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if (pos $text >= $s->[0]) {
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$section = "[$s->[1]] ";
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last;
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}
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}
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$fact = decode_entities($fact);
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$fact =~ s/[a-z;,.]\K\d+\)//g; # remove footnote markers
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print "$section$fact.\n";
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}
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