#!/usr/bin/perl -w

=head1 NAME

dh_installexamples - install example files into package build directories

=cut

use strict;
use Debian::Debhelper::Dh_Lib;

=head1 SYNOPSIS

B<dh_installexamples> [S<I<debhelper options>>] [B<-A>] [B<-X>I<item>] [S<I<file ...>>]

=head1 DESCRIPTION

dh_installexamples is a debhelper program that is responsible for
installing examples into usr/share/doc/package/examples in package
build directories.

Any file names specified as parameters will be installed into the first
package dh_installexamples is told to act on. By default, this is the first
binary package in debian/control, but if you use -p, -i, or -a flags, it
will be the first package specified by those flags.

Files named debian/package.examples can list other files to be installed.

=head1 OPTIONS

=over 4

=item B<-A>, B<--all>

Install any files specified by command line parameters in ALL packages
acted on.

=item I<file ...>

Install these files as examples into the first package acted on. (Or into
all packages if -A is specified.)

=item B<-Xitem>, B<--exclude=item>

Exclude files that contain "item" anywhere in their filename from
being installed.

=back

=head1 NOTES

Note that dh_installexamples will happily copy entire directory hierarchies
if you ask it to (similar to cp -a). If it is asked to install a
directory, it will install the complete contents of the directory.

=cut

init();

foreach my $package (@{$dh{DOPACKAGES}}) {
	my $tmp=tmpdir($package);
	my $file=pkgfile($package,"examples");
	
	my @examples;
	
	if ($file) {
		@examples=filearray($file, ".");
	}	

	if (($package eq $dh{FIRSTPACKAGE} || $dh{PARAMS_ALL}) && @ARGV) {
		push @examples, @ARGV;
	}
	
	if (@examples) {
		if (! -d "$tmp/usr/share/doc/$package/examples") {
			doit("install","-d","$tmp/usr/share/doc/$package/examples");
		}
		
		my $exclude = '';
		if ($dh{EXCLUDE_FIND}) {
			$exclude = ' -and ! \( '.$dh{EXCLUDE_FIND}.' \)';
		}
		
		foreach my $example (@examples) {
			next if excludefile($example);
			if (-d $example && $exclude) {
				my ($dir_basename) = basename($example);
				# Pity there's no cp --exclude ..
				my $pwd=`pwd`;
				chomp $pwd;
				complex_doit("cd $example/.. && find $dir_basename -type f$exclude -exec cp --parents -dp {} $pwd/$tmp/usr/share/doc/$package/examples \\;");
			}
			else {
				doit("cp", "-a", $example, "$tmp/usr/share/doc/$package/examples");
			}
		}
	}
}

=head1 SEE ALSO

L<debhelper(7)>

This program is a part of debhelper.

=head1 AUTHOR

Joey Hess <joeyh@debian.org>

=cut