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|
#!/opt/bin/perl
# the generated tables mostly have NOT been checked so far!
use v5.8.2;
use utf8;
use Encode;
use Encode::JP;
use Encode::CN;
use Encode::KR;
use Encode::HanExtra;
use Encode::JIS2K;
my $gen;
$TO_UNICODE = 0; # also generate to_unicode tables
sub linear {
my ($a, $l, $h, $b) = @_;
for ($l .. $h) {
return unless defined $a->[$_] && $a->[$_] == $_ + ($b - $l);
}
1;
}
sub wrap {
my $res = " ";
$res .= "$1\n " while $_[0] =~ /\G(.{90}\S*?)\s+/gc;
$res .= "$1" if $_[0] =~ /\G(.*)$/;
$res;
}
my $last_tab_full; # hack
sub gentab {
my ($enc, $l, $h, $f, $rep) = @_;
$last_tab_full = 0;
" = {\n"
. (wrap join ", ",
map +(sprintf "0x$f",
defined $enc->[$_] ? $enc->[$_] : $last_tab_full++ * 0 + $rep
), $l..$h)
. "\n};\n";
}
sub gen {
my ($enc, $base, $ch) = @_;
my ($fun, $tab);
my (@t1, @t2);
for (255, 159, 127, 126, 125) {
if (linear $enc, 0, $_, 0) {
undef $enc->[$_] for 0..$_;
$fun .= sprintf "if (· <= 0x%04x) return ·;\n", $_;
}
}
for (126, 127, 128) {
if (linear $enc, $_, 159, $_) {
undef $enc->[$_] for $_..159;
$fun .= sprintf "if (0x%04x <= · && · <= 0x%04x) return ·;\n", $_, 159;
}
}
for (126, 127) {
next unless defined $enc->[$_];
$fun .= sprintf "if (· == 0x%04x) return 0x%04x;\n", $_, delete $enc->[$_];
}
my @map;
my @map2;
for (0 .. $#$enc) {
if (defined $enc->[$_]) {
$map[$_] = $enc->[$_];
$map2[$_ >> 8]++;
}
}
for my $p (0..255) {
if ($map2[$p]) {
my $b = $p << 8;
my ($l, $h);
for my $i (0..255) { $l = $i, last if defined $map[$b + $i]; }
for my $i (0..255) { $h = 255 - $i, last if defined $map[$b + 255 - $i]; }
if ($map2[$p] <= 5) {
for ($l .. $h) {
next unless defined $enc->[$b + $_];
$fun .= sprintf "if (· == 0x%04x) return 0x%04x;\n", $b + $_, $enc->[$b + $_];
}
} elsif (linear $enc, $b + $l, $b + $h, $enc->[$b + $l]) {
my $dif = $enc->[$b + $l] - ($b + $l);
$dif = $dif < 0 ? sprintf "- 0x%04x", -$dif : sprintf "+ 0x%04x", $dif;
$fun .= sprintf "if (· >= 0x%04x && 0x%04x >= ·) return · %s;\n", $b + $l, $b + $h, $dif;
} elsif ($map2[$p] <= 5) { # defunct
$fun .= "switch (·)\n {\n";
for ($l .. $h) {
next unless defined $enc->[$b + $_];
$fun .= sprintf " case 0x%04x: return 0x%04x;\n", $b + $_, $enc->[$b + $_];
}
$fun .= " }\n";
} else {
my ($i, $t, $f) = (0, "uint8_t", "%02x");
for ($l .. $h) {
if ($enc->[$b + $_] > 255) {
($i, $t, $f) = (1, "uint16_t", "%04x");
last;
}
}
$i ? push @t2, [$p, $l, $h, $t, $f]
: push @t1, [$b, $l, $h, $t, $f];
}
}
}
if (@t2 <= 3) {
push @t1, @t2;
@t2 = ();
}
for (@t1) {
my ($b, $l, $h, $t, $f) = @$_;
my $rep = $b + $l == 0 ? 128 : 0;
$tab .= "static const $t $base\_$b\[]" . gentab $enc, $b + $l, $b + $h, $f;
$fun .= sprintf "if (0x%04x <= · && · <= 0x%04x)\n"
. " return %s$base\_$b\[· - 0x%04x];\n",
$b + $l, $b + $h,
($last_tab_full ? sprintf "$base\_$b\[· - 0x%04x] == $rep ? NOCHAR : ", $b + $l : ""),
$b + $l;
}
if (@t2) {
my ($min, $max) = (255, 0);
my ($l, $h) = (255, 0);
for (@t2) {
my ($p, $L, $H, $t, $f) = @$_;
$max = $p if $p > $max;
$min = $p if $p < $min;
$l = $L if $L < $l;
$h = $H if $H > $h;
}
$fun .= "uint8_t l = ·;\n";
$fun .= "uint16_t h = · >> 8;\n";
if ($h - $l < 200) {
my $d = $h - $l + 1;
my @enc;
for $p ($min .. $max) {
for $i ($l .. $h) {
$enc[($p - $min) * $d + $i - $l] = $enc->[$p * 256 + $i];
}
}
$tab .= "static const uint16_t $base\_m[]" . gentab \@enc, 0, $#enc, "%04x";
if ($last_tab_full) {
$fun .= sprintf "if (0x%02x <= h && h <= 0x%02x\n"
. " && 0x%02x <= l && l <= 0x%02x)\n"
. " return $base\_m\[h * 0x%02x + l - 0x%04x]\n"
. " ? $base\_m\[h * 0x%02x + l - 0x%04x]\n"
. " : NOCHAR;\n",
$min, $max, $l, $h,
($d, $min * $d + $l) x 2;
} else {
$fun .= sprintf "if (0x%02x <= h && h <= 0x%02x\n"
. " && 0x%02x <= l && l <= 0x%02x)\n"
. " return $base\_m\[h * 0x%02x + l - 0x%04x];\n",
$min, $max, $l, $h,
$d,
$min * $d + $l;
}
} else {
my @tab = (0) x ($max - $min);
for (@t2) {
my ($p, undef, undef, $t, $f) = @$_;
$tab .= "static const $t $base\_$p\[]" . gentab $enc, $p * 256 + $l, $p * 256 + $h, $f, 0;
$tab[$p - $min] = "$base\_$p";
}
$tab .= "const uint16_t *$base\_i[] = {\n"
. (wrap join ", ", @tab)
. "\n};\n\n";
$fun .= sprintf "if (0x%02x <= h && h <= 0x%02x\n"
. " && 0x%02x <= l && l <= 0x%02x\n"
. " && $base\_i[h - 0x%02x])\n"
. " return $base\_i\[h - 0x%02x][l - 0x%02x]\n"
. " ? $base\_i\[h - 0x%02x][l - 0x%02x]\n"
. " : NOCHAR;\n",
$min, $max, $l, $h,
$min, ($min, $l) x 2;
}
}
$fun .= "return NOCHAR;\n";
$fun =~ s/·/$ch/g;
($tab, $fun);
}
while (<DATA>) {
my ($group, $base, $cs, $type) = split /\s+/;
my @enc1;
my @enc2;
for (0 .. 65535) {
my $enc = encode $cs, (chr $_), Encode::FB_QUIET;
if (length $enc) {
my $code = hex unpack "H*", $enc;
$enc1[$_] = $code;
$enc2[$code] = $_ unless defined $enc2[$code];
}
}
my ($tab1, $fun1);
my ($tab2, $fun2);
($tab1, $fun1) = gen \@enc1, "$base\_f", "unicode";
($tab2, $fun2) = gen \@enc2, "$base\_t", "enc" if $TO_UNICODE;
$fun1 =~ s/^/ /gm;
$fun2 =~ s/^/ /gm;
print "$base\n";
open OUT, ">table/$base.h" or die;
print OUT <<EOF;
//
// AUTOMATICALLLY GENERATED by gentables
//
#ifdef ENCODING_$group
$tab1$tab2
static uint32_t cs_$base\_from_unicode (unicode_t unicode) {
$fun1}
EOF
if ($TO_UNICODE) {
print OUT <<EOF
#if ENCODING_TO_UNICODE
static unicode_t cs_$base\_to_unicode (uint32_t enc) {
$fun2}
#endif
EOF
}
print OUT <<EOF;
#else
#define cs_$base\_from_unicode cs_unknown_from_unicode
#define cs_$base\_to_unicode cs_unknown_to_unicode
#endif
EOF
close OUT;
}
__DATA__
VN viscii viscii
KR ksc5601_1987_0 ksc5601-raw
ZH gb2312_1980_0 gb2312-raw
ZH gbk_0 gbk
ZH_EXT cns11643_1992_1 cns11643-1
ZH_EXT cns11643_1992_2 cns11643-2
ZH_EXT cns11643_1992_3 cns11643-3
ZH_EXT cns11643_1992_4 cns11643-4
ZH_EXT cns11643_1992_5 cns11643-5
ZH_EXT cns11643_1992_6 cns11643-6
ZH_EXT cns11643_1992_7 cns11643-7
ZH_EXT cns11643_1992_f cns11643-f
ZH big5 big5
ZH_EXT big5_ext big5ext
ZH_EXT big5_plus big5plus
EU koi8_r koi8-r
EU koi8_u koi8-u
DEFAULT iso8859_1 iso-8859-1
EU iso8859_2 iso-8859-2
EU iso8859_3 iso-8859-3
EU iso8859_4 iso-8859-4
EU iso8859_5 iso-8859-5
EU iso8859_6 iso-8859-6
EU iso8859_7 iso-8859-7
EU iso8859_8 iso-8859-8
EU iso8859_9 iso-8859-9
EU iso8859_10 iso-8859-10
EU iso8859_11 iso-8859-11
EU iso8859_13 iso-8859-13
EU iso8859_14 iso-8859-14
DEFAULT iso8859_15 iso-8859-15
EU iso8859_16 iso-8859-16
JP jis0201_1976_0 jis0201-raw
JP jis0208_1990_0 jis0208-raw
JP jis0212_1990_0 jis0212-raw
JP_EXT jis0213_1 jis0213-1-raw
JP_EXT jis0213_2 jis0213-2-raw
|
