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#!/usr/bin/perl -w
# Generates a mirrors_<type>.h file, reading from Mirrors.masterlist.
# Note that there will be duplicate strings in the generated file.
# I am relying on the c compiler to fix this, which gcc does.
#
# Pass in the type of mirror we are interested in (http or ftp),
# or use httplist or ftplist to generate a list of country codes for the
# mirror type.
use strict;
my $type = shift || die "please specify mirror type\n";
my $input = shift;
$input = 'Mirrors.masterlist' unless defined $input;
my $hostarch=$ENV{DEB_HOST_ARCH};
if (! defined $hostarch) {
$hostarch=`dpkg-architecture -qDEB_HOST_ARCH`;
chomp $hostarch;
}
my $iso3166xml = '/usr/share/xml/iso-codes/iso_3166.xml';
my %iso3166;
open ISO3166TAB, '-|:utf8', './iso3166tab.py', "$iso3166xml"
or die "open iso3166tab.py $iso3166xml: $!";
while (<ISO3166TAB>) {
/^([A-Z]+)\t(.*)$/ or next;
$iso3166{$1} = $2;
}
close ISO3166TAB;
# Slurp in the mirror file.
my @data;
my %countries;
my %http_countries;
my %ftp_countries;
my $id=-1; # incremented to 0 when first site is seen
open (IN, $input) or die "$input: $!";
while (<IN>) {
chomp;
if (m/([^:]*):\s+(.*)/) {
my $key = lc $1;
my $value = $2;
if (lc $key eq 'site') {
$id++;
$data[$id]->{site} = $value;
}
elsif (lc $key eq 'country') {
$value =~ s/ .*//;
$value = uc $value;
$data[$id]->{$key} = $value;
}
else {
$data[$id]->{$key} = $value;
}
}
}
close IN;
# Look for entries in $input matching ${CC}, and expand them out to one
# entry for every country code in iso_3166.xml, with the following
# substitution variables:
# ${CC}: lower-case country code
# ${UCC}: upper-case country code
# ${CNAME}: country name
# This is useful if you have a mirror hierarchy using wildcard DNS.
# Use a C-style for loop because we may modify $id in the middle of it.
for (my $id = 0; $id < @data; $id++) {
if ($data[$id]->{site} =~ /\${CC}/) {
my @expanded;
foreach my $cc (sort keys %iso3166) {
my %entry = %{$data[$id]};
for my $field (keys %entry) {
$entry{$field} =~ s/\${CC}/lc($cc)/eg;
$entry{$field} =~ s/\${UCC}/uc($cc)/eg;
$entry{$field} =~ s/\${CNAME}/$iso3166{$cc}/g;
}
push @expanded, \%entry;
}
splice @data, $id, 1, @expanded;
$id += @expanded - 1;
}
}
# Poor man's mirror rating system: push-primary, push* (-secondary), others
foreach my $id (0..$#data) {
my $rating=0;
if (exists $data[$id]->{type}) {
$rating=1 if $data[$id]->{type} =~ /push/i;
$rating=2 if $data[$id]->{type} =~ /push-primary/i;
}
$data[$id]->{rating}=$rating;
}
my @newdata;
foreach my $id (0..$#data) {
if (exists $data[$id]->{'archive-architecture'} &&
$data[$id]->{'archive-architecture'} ne "any") {
my @arches = split ' ', $data[$id]->{'archive-architecture'};
if (grep /^!/, @arches) {
my %notarches = map { substr($_, 1) => 1 } grep /^!/, @arches;
next if exists $notarches{$hostarch};
} else {
my %arches = map { $_ => 1 } @arches;
next if not exists $arches{$hostarch};
}
}
push @newdata, $data[$id];
}
@data = @newdata;
if ($type =~ /(.*)list/) {
my $type=$1;
open (LIST, ">debian/${type}list-countries") or die "debian/${type}list-countries: $!";
foreach my $id (0..$#data) {
next unless exists $data[$id]->{"archive-$type"} and
exists $data[$id]->{country};
$countries{$data[$id]->{country}} = 1;
}
foreach my $country (sort (keys %countries)) {
print LIST "${country}\n";
}
close LIST;
}
else {
open (OUT, ">mirrors_$type.h") or die "mirrors_$type.h: $!";
print OUT "/* Automatically generated; do not edit. */\n";
# Now output the mirror list. It is ordered with better mirrors
# near the top.
print OUT "static struct mirror_t mirrors_$type\[] = {\n";
my $q='"';
foreach my $id (sort { $data[$b]->{rating} <=> $data[$a]->{rating} } 0..$#data) {
next unless exists $data[$id]->{"archive-$type"} and
exists $data[$id]->{country};
if (! exists $data[$id]->{'archive-architecture'}) {
print STDERR "warning: missing archive-architecture for mirror ".$data[$id]->{site}."; assuming it contains all architectures.\n";
}
print OUT "\t{",
join(", ", $q.$data[$id]->{site}.$q, $q.$data[$id]->{country}.$q,
$q.$data[$id]->{"archive-$type"}.$q),
"},\n";
}
print OUT "\t{NULL, NULL, NULL}\n";
print OUT "};\n";
close OUT;
}
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