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|
#!/usr/bin/perl -w
#
# Script to convert http://www.unicode.org/Public/UNIDATA/Scripts.txt
# into a machine-readable table.
#
######################################################################
if (@ARGV != 1) {
die "Usage: gen-script-table.pl Scripts.txt > pango-script-table.h\n";
}
open IN, $ARGV[0] || die "Cannot open $ARGV[0]: $!\n";
my @ranges;
my $file;
my $easy_range;
my $i;
my $start;
my $end;
my $script;
while (<IN>) {
if (/^\#\s+(Scripts-.*.txt)/) {
$file = $1;
}
s/#.*//;
next if /^\s*$/;
if (!/^([0-9A-F]+)(?:\.\.([0-9A-F]+))?\s*;\s*([A-Za-z_]+)\s*$/) {
die "Cannot parse line: '$_'\n";
}
if (defined $2) {
push @ranges, [ hex $1, hex $2, uc $3 ];
} else {
push @ranges, [ hex $1, hex $1, uc $3 ];
}
}
@ranges = sort { $a->[0] <=> $b->[0] } @ranges;
$date = gmtime;
print <<"EOT";
/* pango-script-table.h: Generated by gen-script-table.pl
*
* Date: $date
* Source: $file
*
* Do not edit.
*/
EOT
$easy_range = 0x2000;
print <<"EOT";
#define PANGO_EASY_SCRIPTS_RANGE $easy_range
static const guchar pango_script_easy_table[$easy_range] = {
EOT
$i = 0;
$end = -1;
for (my $c = 0; $c < $easy_range; $c++) {
if ($c % 3 == 0) {
printf "\n ";
}
if ($c > $end) {
$start = $ranges[$i]->[0];
$end = $ranges[$i]->[1];
$script = $ranges[$i]->[2];
$i++;
}
if ($c < $start) {
printf " PANGO_SCRIPT_COMMON,";
} else {
printf " PANGO_SCRIPT_%s,", $script;
}
}
if ($end >= $easy_range) {
$i--;
$ranges[$i]->[0] = $easy_range;
}
print <<"EOT";
};
static const struct {
gunichar start;
guint16 chars;
guint16 script;
} pango_script_table[] = {
EOT
for (; $i <= $#ranges; $i++) {
$start = $ranges[$i]->[0];
$end = $ranges[$i]->[1];
$script = $ranges[$i]->[2];
while ($i <= $#ranges - 1 &&
$ranges[$i + 1]->[0] == $end + 1 &&
$ranges[$i + 1]->[2] eq $script) {
$i++;
$end = $ranges[$i]->[1];
}
if ($script ne "COMMON") {
printf " { %#06x, %5d, PANGO_SCRIPT_%s },\n", $start, $end - $start + 1, $script;
}
}
printf "};\n";
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