Lots of stuff for manipulating IkiWiki setup scripts.

1 files changed, 89 insertions, 0 deletions

diff --git a/usr/src/libpiny/lib/IkiWiki/FakeSetup.pm b/usr/src/libpiny/lib/IkiWiki/FakeSetup.pm
new file mode 100644
index 0000000..8a8b2d2
--- /dev/null
+++ b/usr/src/libpiny/lib/IkiWiki/FakeSetup.pm
@@ -0,0 +1,89 @@
+package IkiWiki::FakeSetup;
+
+use strict;
+use warnings;
+
+use Data::Dumper qw( );
+use Exporter qw( import );
+
+our @EXPORT_OK = qw( readSetup writeSetup );
+
+sub readSetup {
+  my ( $setupfile ) = @_;
+
+  # Sorry about the use of globals but it's hard to share lexicals with dynamically generated source.
+  $IkiWiki::FakeSetup::package = undef;
+  @IkiWiki::FakeSetup::args = ();
+
+  sub inc {
+    my ( $self, $file ) = @_;
+
+    my $package = $file;
+    $package =~ s/\//::/g;
+    $package =~ s/\.pm//;
+
+    my @src =
+      ( "package $package;\n"
+      , "sub import {\n"
+      , "  my ( \$class, \@args ) = \@_;\n"
+      , "  print 'in import\\n';"
+      , "  \$IkiWiki::FakeSetup::package = \$class;\n"
+      , "  \@IkiWiki::FakeSetup::args = \@args;\n"
+      , "}\n"
+      , "1;\n"
+      );
+
+    return sub { if ( scalar @src ) { $_ = shift @src; return 1; } else { return 0; } };
+
+  };
+
+  eval {
+    my @oldINC = @INC;
+    @INC = ( ".", \&inc );
+
+    my %oldINC = %INC;
+    %INC = ( );
+
+    do $setupfile;
+
+    @INC = @oldINC;
+    %INC = %oldINC;
+  };
+
+  return ( $IkiWiki::FakeSetup::package, @IkiWiki::FakeSetup::args );
+
+}
+
+sub writeSetup {
+  my ( $package, @args ) = @_;
+
+  my $d = Data::Dumper->new( \@args );
+  $d->Terse( 1 );
+
+  return "#!/usr/bin/perl\n\nuse $package " . $d->Dump( ) . ";\n";
+}
+
+1;
+
+__END__
+
+Because it may not be completely obvious, here's how you would use this:
+
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use IkiWiki::FakeSetup qw( readSetup writeSetup );
+
+# This reads the setup file, returning the package it uses and any configuration it passed to that package.
+my ( $package, $config ) = readSetup( "almighty_ikiwiki_template.setup" );
+
+# Make changes to the configuration.
+$config->{"srcdir"} = "/some/dir";
+$config->{"adminemail"} = "somejerk\@jerkville.com";
+
+# Open a new file, and write the changed configuration to it.
+open( SETUP, ">", "almighty_ikiwiki_template_changed.setup" );
+print SETUP writeSetup( $package, $config );
+close( SETUP );