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#!/opt/bin/perl |
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|
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# the generated tables mostly have NOT been checked so far! |
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|
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use v5.8.2; |
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use utf8; |
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use Encode; |
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|
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my $gen; |
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|
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$TO_UNICODE = 0; # also generate to_unicode tables |
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|
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sub linear { |
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my ($a, $l, $h, $b) = @_; |
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for ($l .. $h) { |
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return unless defined $a->[$_] && $a->[$_] == $_ + ($b - $l); |
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} |
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1; |
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} |
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|
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sub wrap { |
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my $res = " "; |
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$res .= "$1\n " while $_[0] =~ /\G(.{90}\S*?)\s+/gc; |
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$res .= "$1" if $_[0] =~ /\G(.*)$/; |
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$res; |
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} |
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|
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my $last_tab_full; # hack |
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|
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sub gentab { |
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my ($enc, $l, $h, $f, $rep) = @_; |
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$last_tab_full = 0; |
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|
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" = {\n" |
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. (wrap join ", ", |
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map +(sprintf "0x$f", |
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defined $enc->[$_] ? $enc->[$_] : $last_tab_full++ * 0 + $rep |
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), $l..$h) |
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. "\n};\n"; |
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} |
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|
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sub gen { |
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my ($enc, $base, $ch) = @_; |
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|
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my ($fun, $tab); |
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my (@t1, @t2); |
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|
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for (255, 159, 127, 126, 125) { |
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if (linear $enc, 0, $_, 0) { |
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undef $enc->[$_] for 0..$_; |
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$fun .= sprintf "if (· <= 0x%04x) return ·;\n", $_; |
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} |
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} |
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|
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for (126, 127, 128) { |
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if (linear $enc, $_, 159, $_) { |
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undef $enc->[$_] for $_..159; |
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$fun .= sprintf "if (0x%04x <= · && · <= 0x%04x) return ·;\n", $_, 159; |
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} |
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} |
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|
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for (126, 127) { |
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next unless defined $enc->[$_]; |
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$fun .= sprintf "if (· == 0x%04x) return 0x%04x;\n", $_, delete $enc->[$_]; |
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} |
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|
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my @map; |
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my @map2; |
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|
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for (0 .. $#$enc) { |
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if (defined $enc->[$_]) { |
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$map[$_] = $enc->[$_]; |
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$map2[$_ >> 8]++; |
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} |
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} |
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|
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for my $p (0..255) { |
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if ($map2[$p]) { |
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my $b = $p << 8; |
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|
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my ($l, $h); |
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for my $i (0..255) { $l = $i, last if defined $map[$b + $i]; } |
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for my $i (0..255) { $h = 255 - $i, last if defined $map[$b + 255 - $i]; } |
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|
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if ($map2[$p] <= 5) { |
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for ($l .. $h) { |
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next unless defined $enc->[$b + $_]; |
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$fun .= sprintf "if (· == 0x%04x) return 0x%04x;\n", $b + $_, $enc->[$b + $_]; |
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} |
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} elsif (linear $enc, $b + $l, $b + $h, $enc->[$b + $l]) { |
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my $dif = $enc->[$b + $l] - ($b + $l); |
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$dif = $dif < 0 ? sprintf "- 0x%04x", -$dif : sprintf "+ 0x%04x", $dif; |
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$fun .= sprintf "if (· <= 0x%04x && 0x%04x <= ·) return · %s;\n", $b + $l, $b + $h, $dif; |
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} elsif ($map2[$p] <= 5) { # defunct |
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$fun .= "switch (·)\n {\n"; |
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for ($l .. $h) { |
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next unless defined $enc->[$b + $_]; |
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$fun .= sprintf " case 0x%04x: return 0x%04x;\n", $b + $_, $enc->[$b + $_]; |
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} |
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$fun .= " }\n"; |
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} else { |
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my ($i, $t, $f) = (0, "uint8_t", "%02x"); |
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for ($l .. $h) { |
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if ($enc->[$b + $_] > 255) { |
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($i, $t, $f) = (1, "uint16_t", "%04x"); |
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last; |
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} |
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} |
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|
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$i ? push @t2, [$p, $l, $h, $t, $f] |
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: push @t1, [$b, $l, $h, $t, $f]; |
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} |
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|
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} |
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} |
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|
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if (@t2 <= 3) { |
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push @t1, @t2; |
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@t2 = (); |
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} |
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|
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for (@t1) { |
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my ($b, $l, $h, $t, $f) = @$_; |
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my $rep = $b + $l == 0 ? 128 : 0; |
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$tab .= "static const $t $base\_$b\[]" . gentab $enc, $b + $l, $b + $h, $f; |
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$fun .= sprintf "if (0x%04x <= · && · <= 0x%04x)\n" |
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. " return %s$base\_$b\[· - 0x%04x];\n", |
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$b + $l, $b + $h, |
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($last_tab_full ? sprintf "$base\_$b\[· - 0x%04x] == $rep ? NOCHAR : ", $b + $l : ""), |
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$b + $l; |
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} |
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|
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if (@t2) { |
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my ($min, $max) = (255, 0); |
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my ($l, $h) = (255, 0); |
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for (@t2) { |
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my ($p, $L, $H, $t, $f) = @$_; |
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$max = $p if $p > $max; |
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$min = $p if $p < $min; |
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$l = $L if $L < $l; |
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$h = $H if $H > $h; |
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} |
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|
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$fun .= "uint8_t l = ·;\n"; |
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$fun .= "uint16_t h = · >> 8;\n"; |
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|
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if ($h - $l < 200) { |
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my $d = $h - $l + 1; |
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|
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my @enc; |
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for $p ($min .. $max) { |
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for $i ($l .. $h) { |
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$enc[($p - $min) * $d + $i - $l] = $enc->[$p * 256 + $i]; |
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} |
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} |
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$tab .= "static const uint16_t $base\_m[]" . gentab \@enc, 0, $#enc, "%04x"; |
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|
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if ($last_tab_full) { |
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$fun .= sprintf "if (0x%02x <= h && h <= 0x%02x\n" |
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. " && 0x%02x <= l && l <= 0x%02x)\n" |
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. " return $base\_m\[h * 0x%02x + l - 0x%04x]\n" |
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. " ? $base\_m\[h * 0x%02x + l - 0x%04x]\n" |
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. " : NOCHAR;\n", |
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$min, $max, $l, $h, |
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($d, $min * $d + $l) x 2; |
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} else { |
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$fun .= sprintf "if (0x%02x <= h && h <= 0x%02x\n" |
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. " && 0x%02x <= l && l <= 0x%02x)\n" |
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. " return $base\_m\[h * 0x%02x + l - 0x%04x];\n", |
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$min, $max, $l, $h, |
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$d, |
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$min * $d + $l; |
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} |
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} else { |
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my @tab = (0) x ($max - $min); |
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for (@t2) { |
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my ($p, undef, undef, $t, $f) = @$_; |
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$tab .= "static const $t $base\_$p\[]" . gentab $enc, $p * 256 + $l, $p * 256 + $h, $f, 0; |
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$tab[$p - $min] = "$base\_$p"; |
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} |
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|
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$tab .= "const uint16_t *$base\_i[] = {\n" |
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. (wrap join ", ", @tab) |
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. "\n};\n\n"; |
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|
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$fun .= sprintf "if (0x%02x <= h && h <= 0x%02x\n" |
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. " && 0x%02x <= l && l <= 0x%02x\n" |
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. " && $base\_i[h - 0x%02x])\n" |
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. " return $base\_i\[h - 0x%02x][l - 0x%02x]\n" |
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. " ? $base\_i\[h - 0x%02x][l - 0x%02x]\n" |
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. " : NOCHAR;\n", |
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$min, $max, $l, $h, |
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$min, ($min, $l) x 2; |
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} |
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} |
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|
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$fun .= "return NOCHAR;\n"; |
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|
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$fun =~ s/·/$ch/g; |
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|
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($tab, $fun); |
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} |
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|
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while (<DATA>) { |
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my ($group, $base, $cs, $type) = split /\s+/; |
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|
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my @enc1; |
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my @enc2; |
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|
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for (0 .. 65535) { |
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my $enc = encode $cs, (chr $_), Encode::FB_QUIET; |
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|
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if (length $enc) { |
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my $code = hex unpack "H*", $enc; |
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$enc1[$_] = $code; |
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$enc2[$code] = $_ unless defined $enc2[$code]; |
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} |
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} |
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|
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my ($tab1, $fun1); |
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my ($tab2, $fun2); |
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|
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($tab1, $fun1) = gen \@enc1, "$base\_f", "unicode"; |
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($tab2, $fun2) = gen \@enc2, "$base\_t", "enc" if $TO_UNICODE; |
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|
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$fun1 =~ s/^/ /gm; |
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$fun2 =~ s/^/ /gm; |
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|
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print "$base\n"; |
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open OUT, ">table/$base.h" or die; |
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|
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print OUT <<EOF; |
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// |
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// AUTOMATICALLLY GENERATED by gentables |
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// |
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#ifdef ENCODING_$group |
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|
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$tab1$tab2 |
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static uint32_t cs_$base\_from_unicode (unicode_t unicode) { |
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$fun1} |
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EOF |
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|
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if ($TO_UNICODE) { |
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print OUT <<EOF |
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#if ENCODING_TO_UNICODE |
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static unicode_t cs_$base\_to_unicode (uint32_t enc) { |
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$fun2} |
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#endif |
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EOF |
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} |
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|
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print OUT <<EOF; |
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|
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#else |
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|
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#define cs_$base\_from_unicode cs_unknown_from_unicode |
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#define cs_$base\_to_unicode cs_unknown_to_unicode |
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|
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#endif |
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EOF |
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|
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close OUT; |
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} |
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|
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__DATA__ |
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VN viscii viscii |
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KR ksc5601_1987_0 ksc5601-raw |
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ZH gb2312_1980_0 gb2312-raw |
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ZH_EXT cns11643_1992_1 cns11643-1 |
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ZH_EXT cns11643_1992_2 cns11643-2 |
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ZH_EXT cns11643_1992_3 cns11643-3 |
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ZH_EXT cns11643_1992_4 cns11643-4 |
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ZH_EXT cns11643_1992_5 cns11643-5 |
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ZH_EXT cns11643_1992_6 cns11643-6 |
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ZH_EXT cns11643_1992_7 cns11643-7 |
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ZH_EXT cns11643_1992_f cns11643-f |
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ZH big5 big5 |
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ZH_EXT big5_ext big5ext |
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ZH_EXT big5_plus big5plus |
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EU koi8_r koi8-r |
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EU koi8_u koi8-u |
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DEFAULT iso8859_1 iso-8859-1 |
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EU iso8859_2 iso-8859-2 |
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EU iso8859_3 iso-8859-3 |
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EU iso8859_4 iso-8859-4 |
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EU iso8859_5 iso-8859-5 |
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EU iso8859_6 iso-8859-6 |
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EU iso8859_7 iso-8859-7 |
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EU iso8859_8 iso-8859-8 |
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EU iso8859_9 iso-8859-9 |
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EU iso8859_10 iso-8859-10 |
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EU iso8859_11 iso-8859-11 |
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EU iso8859_13 iso-8859-13 |
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EU iso8859_14 iso-8859-14 |
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DEFAULT iso8859_15 iso-8859-15 |
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EU iso8859_16 iso-8859-16 |
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JP jis0201_1976_0 jis0201-raw |
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JP jis0208_1990_0 jis0208-raw |
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JP jis0212_1990_0 jis0212-raw |
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JP_EXT jis0213_1 jis0213-1-raw |
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JP_EXT jis0213_2 jis0213-2-raw |
