X-Git-Url: http://git.home-dn.net/?p=manu%2FRT-Extension-SearchResults-XLS.git;a=blobdiff_plain;f=inc%2FModule%2FInstall%2FSubstitute.pm;fp=inc%2FModule%2FInstall%2FSubstitute.pm;h=56af7fedc542a57f1775a02bde30ff3f9c1c3221;hp=0000000000000000000000000000000000000000;hb=eccf2d3c39297b0bc145041e65f8245b1bef49ea;hpb=566ebe31b8cff8d708e1049eec82ac1797b56859

diff --git a/inc/Module/Install/Substitute.pm b/inc/Module/Install/Substitute.pm
new file mode 100644
index 0000000..56af7fe
--- /dev/null
+++ b/inc/Module/Install/Substitute.pm
@@ -0,0 +1,131 @@
+#line 1
+package Module::Install::Substitute;
+
+use strict;
+use warnings;
+use 5.008; # I don't care much about earlier versions
+
+use Module::Install::Base;
+our @ISA = qw(Module::Install::Base);
+
+our $VERSION = '0.03';
+
+require File::Temp;
+require File::Spec;
+require Cwd;
+
+#line 89
+
+sub substitute
+{
+	my $self = shift;
+	$self->{__subst} = shift;
+	$self->{__option} = {};
+	if( UNIVERSAL::isa( $_[0], 'HASH' ) ) {
+		my $opts = shift;
+		while( my ($k,$v) = each( %$opts ) ) {
+			$self->{__option}->{ lc( $k ) } = $v || '';
+		}
+	}
+	$self->_parse_options;
+
+	my @file = @_;
+	foreach my $f (@file) {
+		$self->_rewrite_file( $f );
+	}
+
+	return;
+}
+
+sub _parse_options
+{
+	my $self = shift;
+	my $cwd = Cwd::getcwd();
+	foreach my $t ( qw(from to) ) {
+        $self->{__option}->{$t} = $cwd unless $self->{__option}->{$t};
+		my $d = $self->{__option}->{$t};
+		die "Couldn't read directory '$d'" unless -d $d && -r _;
+	}
+}
+
+sub _rewrite_file
+{
+	my ($self, $file) = @_;
+	my $source = File::Spec->catfile( $self->{__option}{from}, $file );
+	$source .= $self->{__option}{sufix} if $self->{__option}{sufix};
+	unless( -f $source && -r _ ) {
+		print STDERR "Couldn't find file '$source'\n";
+		return;
+	}
+	my $dest = File::Spec->catfile( $self->{__option}{to}, $file );
+	return $self->__rewrite_file( $source, $dest );
+}
+
+sub __rewrite_file
+{
+	my ($self, $source, $dest) = @_;
+
+	my $mode = (stat($source))[2];
+
+	open my $sfh, "<$source" or die "Couldn't open '$source' for read";
+	print "Open input '$source' file for substitution\n";
+
+	my ($tmpfh, $tmpfname) = File::Temp::tempfile('mi-subst-XXXX', UNLINK => 1);
+	$self->__process_streams( $sfh, $tmpfh, ($source eq $dest)? 1: 0 );
+	close $sfh;
+
+	seek $tmpfh, 0, 0 or die "Couldn't seek in tmp file";
+
+	open my $dfh, ">$dest" or die "Couldn't open '$dest' for write";
+	print "Open output '$dest' file for substitution\n";
+
+	while( <$tmpfh> ) {
+		print $dfh $_;
+	}
+	close $dfh;
+	chmod $mode, $dest or "Couldn't change mode on '$dest'";
+}
+
+sub __process_streams
+{
+	my ($self, $in, $out, $replace) = @_;
+	
+	my @queue = ();
+	my $subst = $self->{'__subst'};
+	my $re_subst = join('|', map {"\Q$_"} keys %{ $subst } );
+
+	while( my $str = <$in> ) {
+		if( $str =~ /^###\s*(before|replace|after)\:\s?(.*)$/s ) {
+			my ($action, $nstr) = ($1,$2);
+			$nstr =~ s/\@($re_subst)\@/$subst->{$1}/ge;
+
+			die "Replace action is bad idea for situations when dest is equal to source"
+                if $replace && $action eq 'replace';
+			if( $action eq 'before' ) {
+				die "no line before 'before' action" unless @queue;
+				# overwrite prev line;
+				pop @queue;
+				push @queue, $nstr;
+				push @queue, $str;
+			} elsif( $action eq 'replace' ) {
+				push @queue, $nstr;
+			} elsif( $action eq 'after' ) {
+				push @queue, $str;
+				push @queue, $nstr;
+				# skip one line;
+				<$in>;
+			}
+		} else {
+			push @queue, $str;
+		}
+		while( @queue > 3 ) {
+			print $out shift(@queue);
+		}
+	}
+	while( scalar @queue ) {
+		print $out shift(@queue);
+	}
+}
+
+1;
+