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#!/usr/bin/perl
# Complete check of a stateless encoding.
# Usage: check-stateless TOP SRCDIR CHARSET
use warnings;
use strict;
if (@ARGV < 3) {
print "Usage: check-stateless <top> <srcdir> <charset\n";
exit;
}
my $top = shift @ARGV;
my $srcdir = shift @ARGV;
my $charset = shift @ARGV;
# charset, modified for use in filenames.
my $charsetf = $charset;
$charsetf =~ s/:/-/g;
# iconv in one direction.
command("$srcdir/table-from $charset > $srcdir/tmp-$charsetf.TXT");
# iconv in the other direction.
command("$srcdir/table-to $charset | sort > $srcdir/tmp-$charsetf.INVERSE.TXT");
# Check 1: charmap and iconv forward should be identical.
command("cmp $srcdir/$charsetf.TXT $srcdir/tmp-$charsetf.TXT 2> /dev/null");
# Check 2: the difference between the charmap and iconv backward.
command("sed -e '/ .* 0x/d' < $srcdir/$charsetf.TXT > $srcdir/tmp-noprecomposed-$charsetf.TXT");
if (-f "$srcdir/$charsetf.IRREVERSIBLE.TXT") {
command("cat $srcdir/tmp-noprecomposed-$charsetf.TXT $srcdir/$charsetf.IRREVERSIBLE.TXT | sort | uniq -u > $srcdir/tmp-orig-$charsetf.INVERSE.TXT");
} else {
command("cp $srcdir/tmp-noprecomposed-$charsetf.TXT $srcdir/tmp-orig-$charsetf.INVERSE.TXT");
}
command("cmp $srcdir/tmp-orig-$charsetf.INVERSE.TXT $srcdir/tmp-$charsetf.INVERSE.TXT 2> /dev/null");
command("rm -f $srcdir/tmp-$charsetf.TXT $srcdir/tmp-$charsetf.INVERSE.TXT $srcdir/tmp-noprecomposed-$charsetf.TXT $srcdir/tmp-orig-$charsetf.INVERSE.TXT");
sub command {
my $cmd = shift;
print "> $cmd\n";
my @output = `$cmd 2>&1`;
foreach my $line (@output) {
print "| $line";
}
my $status = $? / 256;
die "$cmd:\nexit status $status\n" if $status;
return @output;
}
# For a new encoding:
# You can create the "$charsetf".TXT like this:
# ./table-from "$charset" > "$charsetf".TXT
# You can create the "$charsetf".IRREVERSIBLE.TXT like this:
# ./table-to "$charset" | sort > "$charsetf".INVERSE.TXT
# diff "$charsetf".TXT "$charsetf".INVERSE.TXT | grep '^[<>]' | sed -e 's,^. ,,' > "$charsetf".IRREVERSIBLE.TXT
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