Updated readme, fixes #10

Buildroot in spec file doesn't support spaces in some RPM versions
(ALT Linux). Removed it from spec since --buildroot is already passed
on command line. Also quoted cd argument.

Alien/Package/Deb.pm

@@ -254,19 +254,27 @@ sub scan {
 	for (my $i=0; $i <= $#control; $i++) {
 		$_ = $control[$i];
 		chomp;
-		if (/^(\w.*?):\s+(.*)/) {
+		if (/^(\w.*?):\s*(.*)/) {
 			# Really old debs might have oddly capitalized
 			# field names.
 			$field=ucfirst(lc($1));
 			if (exists $fieldtrans{$field}) {
 				$field=$fieldtrans{$field};
-				$this->$field($2);
+				my $value = $2;
+				# Only set field if value is non-empty.
+				# For Description, empty first line means
+				# the actual text starts on next line.
+				$this->$field($value) if length $value;
 			}
 		}
 		elsif (/^ / && $field eq 'summary') {
 			# Handle extended description.
 			s/^ //g;
 			$_="" if $_ eq ".";
+			# If summary is empty, use first line of extended description
+			if (!defined $this->summary || !length $this->summary) {
+				$this->summary($_);
+			}
 			$description.="$_\n";
 		}
 	}

Alien/Package/Rpm.pm

@@ -463,9 +463,8 @@ sub prep {
 	# Write out the spec file.
 	my $spec="$dir/".$this->name."-".$this->version."-".$this->release.".spec";
 	open (OUT, ">$spec") || die "$spec: $!";
-	my $pwd=`pwd`;
-	chomp $pwd;
-	print OUT "Buildroot: $pwd/$dir\n"; # must be absolute dirname
+	# Note: Buildroot is passed via --buildroot command line option
+	# to handle paths with spaces correctly
 	print OUT "Name: ".$this->name."\n";
 	print OUT "Version: ".$this->version."\n";
 	print OUT "Release: ".$this->release."\n";
@@ -483,22 +482,22 @@ sub prep {
 	if ($this->usescripts) {
 		if ($this->preinst) {
 			print OUT "\%pre\n";
-			print OUT $this->preinst."\n";
+			print OUT escape_percents($this->preinst)."\n";
 			print OUT "\n";
 		}
 		if ($this->postinst) {
 			print OUT "\%post\n";
-			print OUT $this->postinst."\n";
+			print OUT escape_percents($this->postinst)."\n";
 			print OUT "\n";
 		}
 		if ($this->prerm) {
 			print OUT "\%preun\n";
-			print OUT $this->prerm."\n";
+			print OUT escape_percents($this->prerm)."\n";
 			print OUT "\n";
 		}
 		if ($this->postrm) {
 			print OUT "\%postun\n";
-			print OUT $this->postrm."\n";
+			print OUT escape_percents($this->postrm)."\n";
 			print OUT "\n";
 		}
 	}
@@ -574,7 +573,7 @@ sub build {
 	$opts.=" $ENV{RPMBUILDOPT}" if exists $ENV{RPMBUILDOPT};
 	my $pwd=`pwd`;
 	chomp $pwd;
-	my $command="cd $dir; $buildcmd --buildroot='$pwd/$dir' -bb $opts '".$this->name."-".$this->version."-".$this->release.".spec'";
+	my $command="cd '$dir'; $buildcmd --buildroot='$pwd/$dir' -bb $opts '".$this->name."-".$this->version."-".$this->release.".spec'";
 	my $log=$this->runpipe(1, "$command 2>&1");
 	if ($?) {
 		die "Package build failed. Here's the log of the command ($command):\n", $log;
@@ -659,6 +658,7 @@ sub _script_helper {
 		$this->{$script} = $value;
 	}
 	$this->{$script} = shift if @_;
+	return $this->{$script};
 
 	# get
 	return unless defined wantarray; # optimization
@@ -694,6 +694,11 @@ sub prerm {
 	my $this=shift;
 	$this->_script_helper('prerm', @_);
 }
+sub escape_percents {
+	my $s=shift;
+	$s =~ s/\%/\%\%/g;
+	return $s;
+}
 
 =item arch
 

Alien/Package/Tgz.pm

@@ -489,7 +489,10 @@ sub build {
 		$Alien::Package::verbose=$v;
 	}
 	else {
-		die "Sorry, I cannot generate the .tgz file because /sbin/makepkg is not present.\n"
+		# Fallback to plain tar when makepkg is not available
+		# Use same method as makepkg: strip ./ prefix via sed to match Slackware format
+		$this->do("cd ".$this->unpacked_tree."; find ./ | LC_COLLATE=C sort | sed '2,\$s,^\\./,,' | tar --no-recursion -T - -czf ../$tgz")
+			or die "Package build failed";
 	}
 	return $tgz;
 }

Makefile.PL

@@ -15,7 +15,7 @@ sub MY::libscan {
 sub MY::postamble {
 	return q{
 
-VER=$(shell perl -e '$$_=<>;print m/\((.*?)\)/'<debian/changelog)
+VER=$(shell perl -e '$$_=<>;print m/\((.*?)\)/'<ChangeLog)
 
 all:: extra_build
 clean:: extra_build

README

@@ -51,8 +51,8 @@ Note:
 Programs that use alien:
 
   I know of one program that acts as a frontend to alien - kpackviewer is a
-  package viewer that can convert between package formats by using alien. Its
-  homepage is at http://www.momentus.com.br/users/hook/kpackviewer.html
+  package viewer that can convert between package formats by using alien. Can
+  be downloaded from https://download.kde.org/Attic/stable/stable/apps/KDE1.x/utils/kpackviewer-0.70.tar.gz
 
   Corel also appears to have (or had) something in Corel linux that
   uses alien.