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-rw-r--r--urpm/cfg.pm61
1 files changed, 54 insertions, 7 deletions
diff --git a/urpm/cfg.pm b/urpm/cfg.pm
index 3271996e..c952847a 100644
--- a/urpm/cfg.pm
+++ b/urpm/cfg.pm
@@ -40,12 +40,57 @@ Returns 1 on success, 0 on failure.
=cut
+#- implementations of the substitutions. arch and release are mdk-specific
+
+sub get_arch () { `/bin/rpm -q --qf '%{arch}' mandrakelinux-release` }
+
+sub get_release () {
+ my ($v, $r) = split / /, `/bin/rpm -q --qf '%{version} %{release}' mandrakelinux-release`;
+ $v = 'cooker' if $r =~ /^0\./;
+ $v;
+}
+
+sub get_host () {
+ my $h;
+ if (open my $f, '/proc/sys/kernel/hostname') {
+ $h = <$f>;
+ close $f;
+ } else {
+ $h = $ENV{HOSTNAME} || `/bin/hostname`;
+ }
+ chomp $h;
+ $h;
+}
+
our $err;
sub _syntax_error () { $err = N("syntax error in config file at line %s", $.) }
-sub load_config ($) {
- my ($file) = @_;
+sub substitute_back {
+ my ($new, $old) = @_;
+ return $new if !defined($old);
+ return $old if expand_line($old) eq $new;
+ return $new;
+}
+
+my %substitutions;
+sub expand_line {
+ my ($line) = @_;
+ unless (scalar keys %substitutions) {
+ %substitutions = (
+ HOST => get_host(),
+ ARCH => get_arch(),
+ RELEASE => get_release(),
+ );
+ }
+ foreach my $sub (keys %substitutions) {
+ $line =~ s/\$$sub\b/$substitutions{$sub}/g;
+ }
+ return $line;
+}
+
+sub load_config ($;$) {
+ my ($file, $norewrite) = @_;
my %config;
my $priority = 0;
my $medium;
@@ -56,9 +101,10 @@ sub load_config ($) {
chomp;
next if /^\s*#/; #- comments
s/^\s+//; s/\s+$//;
+ $_ = expand_line($_) unless $norewrite;
if ($_ eq '}') { #-{
if (!defined $medium) {
- _syntax_error;
+ _syntax_error();
return;
}
$config{$medium}{priority} = $priority++; #- to preserve order
@@ -66,7 +112,7 @@ sub load_config ($) {
next;
}
if (defined $medium && /{$/) { #-}
- _syntax_error;
+ _syntax_error();
return;
}
if ($_ eq '{') { #-} Entering a global block
@@ -131,6 +177,7 @@ sub load_config ($) {
sub dump_config ($$) {
my ($file, $config) = @_;
+ my $config_old = load_config($file, 1);
my @media = sort {
return 0 if $a eq $b;
return -1 if $a eq ''; #- global options come first
@@ -141,10 +188,10 @@ sub dump_config ($$) {
$err = N("unable to write config file [%s]", $file);
return 0;
};
- print $f "# generated " . (scalar localtime) . "\n";
+ print $f "# generated " . (scalar localtime()) . "\n";
foreach my $m (@media) {
if ($m) {
- print $f quotespace($m), ' ', quotespace($config->{$m}{url}), " {\n";
+ print $f quotespace($m), ' ', quotespace(substitute_back($config->{$m}{url}, $config_old->{$m}{url})), " {\n";
} else {
next if !keys %{$config->{''}};
print $f "{\n";
@@ -153,7 +200,7 @@ sub dump_config ($$) {
if (/^(update|ignore|synthesis|virtual)$/) {
print $f " $_\n";
} elsif ($_ ne 'priority') {
- print $f " $_: $config->{$m}{$_}\n";
+ print $f " $_: " . substitute_back($config->{$m}{$_}, $config_old->{$m}{$_}) . "\n";
}
}
print $f "}\n\n";