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|
#!/usr/bin/env perl -w
# This script generates sbcsdat.c (the data for all the SBCSes) from its
# source form sbcs.dat.
$infile = "sbcs.dat";
$outfile = undef;
$outheader = undef;
my $doing_opts = 1;
my $nargs = 0;
while (@ARGV) {
if ($doing_opts && $ARGV[0] =~ m/^-/) {
if ($ARGV[0] =~ m/^--source=(.*)$/) {
$outfile = $1;
shift;
} elsif ($ARGV[0] =~ m/^--header=(.*)$/) {
$outheader = $1;
shift;
} elsif ($ARGV[0] eq "--") {
$doing_opts = 0;
shift;
} else {
die "unrecognised option '$ARGV[0]'\n";
}
next;
}
if ($nargs++ == 0) {
$infile = $ARGV[0];
shift;
} else {
die "spurious extra argument '$ARGV[0]'\n";
}
}
die "usage: sbcsgen.pl ( --source=SRCFILE | --header=HDRFILE ) [INFILE]\n"
unless defined $outfile or defined $outheader;
open INFH, $infile;
my $charsetname = undef;
my @vals = ();
my @charsetnames = ();
my @sortpriority = ();
if (defined $outfile) {
open SOURCEFH, ">", $outfile;
select SOURCEFH;
print "/*\n";
print " * sbcsdat.c - data definitions for single-byte character sets.\n";
print " *\n";
print " * Generated by sbcsgen.pl from sbcs.dat.\n";
print " * You should edit those files rather than editing this one.\n";
print " */\n";
print "\n";
print "#ifndef ENUM_CHARSETS\n";
print "\n";
print "#include \"charset.h\"\n";
print "#include \"internal.h\"\n";
print "\n";
}
while (<INFH>) {
chomp;
y/\r\n//; # robustness in the face of strange line endings
if (/^(charset|tables) (.*)$/) {
$tables_only = ($1 eq "tables");
$charsetname = $2;
@vals = ();
@sortpriority = map { 0 } 0..255;
} elsif (/^sortpriority ([^-]*)-([^-]*) (.*)$/) {
for ($i = hex $1; $i <= hex $2; $i++) {
$sortpriority[$i] += $3;
}
} elsif (/^[0-9a-fA-FX]/) {
push @vals, map { $_ eq "XXXX" ? -1 : hex $_ } split / +/, $_;
if (scalar @vals > 256) {
die "$infile:$.: charset $charsetname has more than 256 values\n";
} elsif (scalar @vals == 256) {
&outcharset($charsetname, \@vals, \@sortpriority, $tables_only)
if defined $outfile;
push @charsetnames, $charsetname unless $tables_only;
$charsetname = undef;
@vals = ();
@sortpriority = map { 0 } 0..255;
}
}
}
if (defined $outfile) {
print "#else /* ENUM_CHARSETS */\n";
print "\n";
foreach $i (@charsetnames) {
print "ENUM_CHARSET($i)\n";
}
print "\n";
print "#endif /* ENUM_CHARSETS */\n";
close SOURCEFH;
}
if (defined $outheader) {
open HEADERFH, ">", $outheader;
select HEADERFH;
print "/*\n";
print " * sbcsdat.h - header file for SBCS data structures.\n";
print " *\n";
print " * Generated by sbcsgen.pl from sbcs.dat.\n";
print " * You should edit those files rather than editing this one.\n";
print " */\n";
print "\n";
print "#ifndef charset_sbcsdat_h\n";
print "#define charset_sbcsdat_h\n";
print "\n";
print "#include \"charset.h\"\n";
print "#include \"internal.h\"\n";
print "\n";
foreach $i (@charsetnames) {
print "extern const sbcs_data sbcsdata_$i;\n";
}
print "\n";
print "#endif /* charset_sbcsdat_h */\n";
close HEADERFH;
}
sub outcharset($$$$) {
my ($name, $vals, $sortpriority, $tables_only) = @_;
my ($prefix, $i, @sorted);
print "const sbcs_data sbcsdata_$name = {\n";
print " {\n";
$prefix = " ";
@sorted = ();
for ($i = 0; $i < 256; $i++) {
if ($vals->[$i] < 0) {
printf "%sERROR ", $prefix;
} else {
printf "%s0x%04x", $prefix, $vals->[$i];
die "ooh? $i\n" unless defined $sortpriority->[$i];
push @sorted, [$i, $vals->[$i], 0+$sortpriority->[$i]];
}
if ($i % 8 == 7) {
$prefix = ",\n ";
} else {
$prefix = ", ";
}
}
print "\n },\n {\n";
@sorted = sort { ($a->[1] == $b->[1] ?
$b->[2] <=> $a->[2] :
$a->[1] <=> $b->[1]) ||
$a->[0] <=> $b->[0] } @sorted;
$prefix = " ";
$uval = -1;
for ($i = $j = 0; $i < scalar @sorted; $i++) {
next if ($uval == $sorted[$i]->[1]); # low-priority alternative
$uval = $sorted[$i]->[1];
printf "%s0x%02x", $prefix, $sorted[$i]->[0];
if ($j % 8 == 7) {
$prefix = ",\n ";
} else {
$prefix = ", ";
}
$j++;
}
printf "\n },\n %d\n", $j;
print "};\n";
unless ($tables_only) {
print "const charset_spec charset_$name = {\n" .
" $name, read_sbcs, write_sbcs, &sbcsdata_$name\n};\n\n";
}
}
|
