git.distorted.org.uk Git - u/mdw/putty/blob - charset/sbcsgen.pl

   1 #!/usr/bin/env perl -w
   2
   3 # This script generates sbcsdat.c (the data for all the SBCSes) from its
   4 # source form sbcs.dat.
   5
   6 $infile = "sbcs.dat";
   7 $outfile = "sbcsdat.c";
   8
   9 open FOO, $infile;
  10 open BAR, ">$outfile";
  11 select BAR;
  12
  13 print "/*\n";
  14 print " * sbcsdat.c - data definitions for single-byte character sets.\n";
  15 print " *\n";
  16 print " * Generated by sbcsgen.pl from sbcs.dat.\n";
  17 print " * You should edit those files rather than editing this one.\n";
  18 print " */\n";
  19 print "\n";
  20 print "#ifndef ENUM_CHARSETS\n";
  21 print "\n";
  22 print "#include \"charset.h\"\n";
  23 print "#include \"internal.h\"\n";
  24 print "\n";
  25
  26 my $charsetname = undef;
  27 my @vals = ();
  28
  29 my @charsetnames = ();
  30 my @sortpriority = ();
  31
  32 while (<FOO>) {
  33     chomp;
  34     if (/^charset (.*)$/) {
  35         $charsetname = $1;
  36         @vals = ();
  37         @sortpriority = map { 0 } 0..255;
  38     } elsif (/^sortpriority ([^-]*)-([^-]*) (.*)$/) {
  39         for ($i = hex $1; $i <= hex $2; $i++) {
  40             $sortpriority[$i] += $3;
  41         }
  42     } elsif (/^[0-9a-fA-FX]/) {
  43         push @vals, map { $_ eq "XXXX" ? -1 : hex $_ } split / +/, $_;
  44         if (scalar @vals > 256) {
  45             die "$infile:$.: charset $charsetname has more than 256 values\n";
  46         } elsif (scalar @vals == 256) {
  47             &outcharset($charsetname, \@vals, \@sortpriority);
  48             push @charsetnames, $charsetname;
  49             $charsetname = undef;
  50             @vals = ();
  51             @sortpriority = map { 0 } 0..255;
  52         }
  53     }
  54 }
  55
  56 print "#else /* ENUM_CHARSETS */\n";
  57 print "\n";
  58
  59 foreach $i (@charsetnames) {
  60     print "ENUM_CHARSET($i)\n";
  61 }
  62
  63 print "\n";
  64 print "#endif /* ENUM_CHARSETS */\n";
  65
  66 sub outcharset($$$) {
  67     my ($name, $vals, $sortpriority) = @_;
  68     my ($prefix, $i, @sorted);
  69
  70     print "static const sbcs_data data_$name = {\n";
  71     print "    {\n";
  72     $prefix = "    ";
  73     @sorted = ();
  74     for ($i = 0; $i < 256; $i++) {
  75         if ($vals->[$i] < 0) {
  76             printf "%sERROR ", $prefix;
  77         } else {
  78             printf "%s0x%04x", $prefix, $vals->[$i];
  79             die "ooh? $i\n" unless defined $sortpriority->[$i];
  80             push @sorted, [$i, $vals->[$i], 0+$sortpriority->[$i]];
  81         }
  82         if ($i % 8 == 7) {
  83             $prefix = ",\n    ";
  84         } else {
  85             $prefix = ", ";
  86         }
  87     }
  88     print "\n    },\n    {\n";
  89     @sorted = sort { ($a->[1] == $b->[1] ?
  90                       $b->[2] <=> $a->[2] :
  91                       $a->[1] <=> $b->[1]) ||
  92                      $a->[0] <=> $b->[0] } @sorted;
  93     $prefix = "    ";
  94     $uval = -1;
  95     for ($i = $j = 0; $i < scalar @sorted; $i++) {
  96         next if ($uval == $sorted[$i]->[1]); # low-priority alternative
  97         $uval = $sorted[$i]->[1];
  98         printf "%s0x%02x", $prefix, $sorted[$i]->[0];
  99         if ($j % 8 == 7) {
 100             $prefix = ",\n    ";
 101         } else {
 102             $prefix = ", ";
 103         }
 104         $j++;
 105     }
 106     printf "\n    },\n    %d\n", $j;
 107     print "};\n";
 108     print "const charset_spec charset_$name = {\n" .
 109           "    $name, read_sbcs, write_sbcs, &data_$name\n};\n\n";
 110 }