fixup Plack-related requires

[public-inbox.git] / lib / PublicInbox / Config.pm

diff --git a/lib/PublicInbox/Config.pm b/lib/PublicInbox/Config.pm
index 0d73a867059f468c1e936d79d0a9a2102a5e3d61..f84a9550b6c9a63f04477d8a2fee541c51e3382c 100644 (file)
--- a/lib/PublicInbox/Config.pm
+++ b/lib/PublicInbox/Config.pm
@@ -1,40 +1,20 @@
 # Copyright (C) 2014-2015 all contributors <meta@public-inbox.org>
 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+#
+# Used throughout the project for reading configuration
 package PublicInbox::Config;
 use strict;
 use warnings;
+use base qw/Exporter/;
+our @EXPORT_OK = qw/try_cat/;
 use File::Path::Expand qw/expand_filename/;
 
 # returns key-value pairs of config directives in a hash
 # if keys may be multi-value, the value is an array ref containing all values
 sub new {
        my ($class, $file) = @_;
-       my ($in, $out);
-
        $file = default_file() unless defined($file);
-       my @cmd = (qw/git config/, "--file=$file", '-l');
-       my $cmd = join(' ', @cmd);
-       my $pid = open(my $fh, '-|', @cmd);
-       defined $pid or die "$cmd failed: $!\n";
-       my %rv;
-       foreach my $line (<$fh>) {
-               chomp $line;
-               my ($k, $v) = split(/=/, $line, 2);
-               my $cur = $rv{$k};
-
-               if (defined $cur) {
-                       if (ref($cur) eq "ARRAY") {
-                               push @$cur, $v;
-                       } else {
-                               $rv{$k} = [ $cur, $v ];
-                       }
-               } else {
-                       $rv{$k} = $v;
-               }
-       }
-       close $fh or die "failed to close ($cmd) pipe: $!\n";
-       $? and warn "$$ $cmd exited with: ($pid) $?\n";
-       bless \%rv, $class;
+       bless git_config_dump($file), $class;
 }
 
 sub lookup {
@@ -43,7 +23,7 @@ sub lookup {
        my $pfx;
 
        foreach my $k (keys %$self) {
-               $k =~ /\A(publicinbox\.[A-Z0-9a-z-]+)\.address\z/ or next;
+               $k =~ /\A(publicinbox\.[\w-]+)\.address\z/ or next;
                my $v = $self->{$k};
                if (ref($v) eq "ARRAY") {
                        foreach my $alias (@$v) {
@@ -79,11 +59,50 @@ sub get {
        $self->{"publicinbox.$listname.$key"};
 }
 
+sub config_dir { $ENV{PI_DIR} || expand_filename('~/.public-inbox') }
+
 sub default_file {
        my $f = $ENV{PI_CONFIG};
        return $f if defined $f;
-       my $pi_dir = $ENV{PI_DIR} || expand_filename('~/.public-inbox');
-       "$pi_dir/config";
+       config_dir() . '/config';
+}
+
+sub git_config_dump {
+       my ($file) = @_;
+       my ($in, $out);
+       my @cmd = (qw/git config/, "--file=$file", '-l');
+       my $cmd = join(' ', @cmd);
+       my $pid = open(my $fh, '-|', @cmd);
+       defined $pid or die "$cmd failed: $!";
+       my %rv;
+       foreach my $line (<$fh>) {
+               chomp $line;
+               my ($k, $v) = split(/=/, $line, 2);
+               my $cur = $rv{$k};
+
+               if (defined $cur) {
+                       if (ref($cur) eq "ARRAY") {
+                               push @$cur, $v;
+                       } else {
+                               $rv{$k} = [ $cur, $v ];
+                       }
+               } else {
+                       $rv{$k} = $v;
+               }
+       }
+       close $fh or die "failed to close ($cmd) pipe: $!";
+       $? and warn "$$ $cmd exited with: ($pid) $?";
+       \%rv;
+}
+
+sub try_cat {
+       my ($path) = @_;
+       my $rv;
+       if (open(my $fh, '<', $path)) {
+               local $/;
+               $rv = <$fh>;
+       }
+       $rv;
 }
 
 1;