| 1 | #! /usr/bin/perl |
| 2 | |
| 3 | %ch = (); |
| 4 | %ord = (); |
| 5 | $chunk = undef; |
| 6 | $mode = $ARGV[0] || die "mode?"; |
| 7 | shift; |
| 8 | |
| 9 | sub setup { |
| 10 | my $r = \%{$ch{$_[0]}}; |
| 11 | if (exists $r->{$1}) { |
| 12 | $r->{$1} .= ".br\n"; |
| 13 | } else { |
| 14 | push @{$ord{$_[0]}}, $1; |
| 15 | } |
| 16 | $chunk = \$r->{$1}; |
| 17 | } |
| 18 | while (<>) { |
| 19 | if (/^\.GS (.*)$/) { |
| 20 | setup('grammar'); |
| 21 | } elsif (/^\.OS (.*)$/) { |
| 22 | setup('option'); |
| 23 | } elsif (/^\.GE/ || /^\.OD/) { |
| 24 | $chunk = undef; |
| 25 | } elsif (/^\.GL (.*)$/) { |
| 26 | $ch{'grammar'}{$1} .= ".PP\n"; |
| 27 | next; |
| 28 | } elsif (/^\.OL (.*)$/) { |
| 29 | $ch{'option'}{$1} .= ".PP\n"; |
| 30 | next; |
| 31 | } elsif (/^@@@ (\w+)$/) { |
| 32 | if ($mode eq 'man') { |
| 33 | foreach $head (@{$ord{$1}}) { |
| 34 | print ".SS $head\n"; |
| 35 | print $ch{$1}{$head}; |
| 36 | } |
| 37 | } |
| 38 | next; |
| 39 | } else { |
| 40 | $$chunk .= $_ if $chunk; |
| 41 | } |
| 42 | print if $mode eq 'man'; |
| 43 | } |
| 44 | |
| 45 | sub ital { uc($_[0]); } |
| 46 | sub bold { $head eq 'option' ? $_[0] : "`$_[0]'"; } |
| 47 | sub rom { $_[0]; } |
| 48 | |
| 49 | sub deroff { |
| 50 | $head = $_[0]; |
| 51 | my $chsep = ""; |
| 52 | my $out = ""; |
| 53 | for my $chunk (@{$ord{$head}}) { |
| 54 | (my $chh = $chunk) =~ s/^"(.*)"$/$1/; |
| 55 | $out .= "$chsep$chh\n"; |
| 56 | $chsep = "\n"; |
| 57 | $sep = "\t"; |
| 58 | for (split /\n/, $ch{$head}{$chunk}) { |
| 59 | s/\s$//; s/\\\&//g; s/\\-/-/g; |
| 60 | if (/^\.I (.*)$/) { |
| 61 | $out .= $sep . ital($1); |
| 62 | $sep = " "; |
| 63 | } elsif (/^\.B (.*)$/) { |
| 64 | $out .= $sep . bold($1); |
| 65 | $sep = " "; |
| 66 | } elsif (/^\.RB (.*)/) { |
| 67 | my $i = 1; $out .= $sep; $sep = " "; |
| 68 | for my $w (split ' ', $1) { |
| 69 | if ($w eq "\\c") { |
| 70 | $sep = ""; last; |
| 71 | } |
| 72 | $out .= ($i++%2 ? rom($w) : bold($w)); |
| 73 | } |
| 74 | } elsif (/^\.BR (.*)/) { |
| 75 | my $i = 1; $out .= $sep; $sep = " "; |
| 76 | for my $w (split ' ', $1) { |
| 77 | if ($w eq "\\c") { |
| 78 | $sep = ""; last; |
| 79 | } |
| 80 | $out .= ($i++%2 ? bold($w) : rom($w)); |
| 81 | } |
| 82 | } elsif (/^\.IR (.*)/) { |
| 83 | my $i = 1; $out .= $sep; $sep = " "; |
| 84 | for my $w (split ' ', $1) { |
| 85 | if ($w eq "\\c") { |
| 86 | $sep = ""; last; |
| 87 | } |
| 88 | $out .= ($i++%2 ? ital($w) : rom($w)); |
| 89 | } |
| 90 | } elsif (/^\.RI (.*)/) { |
| 91 | my $i = 1; $out .= $sep; $sep = " "; |
| 92 | for my $w (split ' ', $1) { |
| 93 | if ($w eq "\\c") { |
| 94 | $sep = ""; last; |
| 95 | } |
| 96 | $out .= ($i++%2 ? rom($w) : ital($w)); |
| 97 | } |
| 98 | } elsif (/^\.BI (.*)/) { |
| 99 | my $i = 1; $out .= $sep; $sep = " "; |
| 100 | for my $w (split ' ', $1) { |
| 101 | if ($w eq "\\c") { |
| 102 | $sep = ""; last; |
| 103 | } |
| 104 | $out .= ($i++%2 ? bold($w) : ital($w)); |
| 105 | } |
| 106 | } elsif (/^\.IB (.*)/) { |
| 107 | my $i = 1; $out .= $sep; $sep = " "; |
| 108 | for my $w (split ' ', $1) { |
| 109 | if ($w eq "\\c") { |
| 110 | $sep = ""; last; |
| 111 | } |
| 112 | $out .= ($i++%2 ? ital($w) : bold($w)); |
| 113 | } |
| 114 | } elsif (/^\.$/) { |
| 115 | # foo |
| 116 | } elsif (/^[^.]/) { |
| 117 | $out .= $sep . $_; |
| 118 | $sep = " "; |
| 119 | } elsif (/^\.br$/ || /^\.PP$/) { |
| 120 | $out .= "\n"; |
| 121 | $sep = "\t"; |
| 122 | } |
| 123 | } |
| 124 | $out .= "\n"; |
| 125 | } |
| 126 | return $out; |
| 127 | } |
| 128 | |
| 129 | if ($mode eq 'c') { |
| 130 | print <<EOF; |
| 131 | /* -*-c-*- |
| 132 | * |
| 133 | * Generated grammar and options summary |
| 134 | */ |
| 135 | |
| 136 | #include "fwd.h" |
| 137 | |
| 138 | EOF |
| 139 | for $head (keys %ch) { |
| 140 | print "const char ${head}_text[] = \"\\\n"; |
| 141 | $text = deroff($head); |
| 142 | $text =~ s/\n/\\n\\\n/g; |
| 143 | print $text; |
| 144 | print "\";\n\n"; |
| 145 | } |
| 146 | } elsif ($mode eq 'text') { |
| 147 | my $sep = ""; |
| 148 | for $head (keys %ch) { |
| 149 | print $sep, deroff($head); |
| 150 | $sep = "\n"; |
| 151 | } |
| 152 | } |