#!/usr/bin/perl -w

use strict;
use Biblio::Isis 0.23;
use Getopt::Std;
use Data::Dumper;
use XML::Simple;
use Text::Iconv;
use Config::IniFiles;
use Encode;
use GDBM_File;
use Fcntl;	# for O_RDWR
#use TDB_File;
use Carp;

$|=1;

my $config_file = $0;
$config_file =~ s/\.pl$/.conf/;
$config_file = $ARGV[0] if ($ARGV[0] && -f $ARGV[0]);
die "FATAL: can't find configuration file '$config_file'" if (! -e $config_file);

my $config;

#use index_DBI;		# default DBI module for index
#use index_DBI_cache;	# faster DBI module using memory cache
use index_DBI_filter;	# filter support for indexes
my $index;

my %opts;

# usage:
# 	-d directory name
# 	-m multiple directories
# 	-q quiet
# 	-s run swish

getopts('d:m:qs', \%opts);

my $path;	# this is name of database

Text::Iconv->raise_error(0);     # Conversion errors don't raise exceptions

# this is encoding of all files on disk, including import_xml/*.xml file and
# filter/*.pm files! It will be used to store strings in perl internally!
my $codepage = 'ISO-8859-2';

my $utf2cp = Text::Iconv->new('UTF-8',$codepage);
# this function will convert data from XML files to local encoding
sub x {
	return $utf2cp->convert($_[0]);
}

# decode isis/excel or other import codepage
my $import2cp;

# outgoing xml must be in UTF-8
my $cp2utf = Text::Iconv->new($codepage,'UTF-8');

# mapping between data type and tag which specify
# format in XML file
my %type2tag = (
	'isis' => 'isis',
	'excel' => 'column',
	'marc' => 'marc',
	'feed' => 'feed',
);

my $cache;	# for cacheing

# lookup hash (tied to file)
my %lhash;
# this option will cache all lookup entries in memory.
# if you are tight on memory, turn this off
my $use_lhash_cache = 1;

my $last_field_name;	# cache to prevent repeated fields

my $broken_cdata = XMLin('<foo><![CDATA[<bar>]]></foo>') eq '<bar>>';
warn "XML::Simple on this system seems broken with <![CDATA[..]]>.\n" if ($broken_cdata);

sub data2xml {

	use xmlify;

	my $type = shift @_;
	my $row = shift @_;
	my $add_xml = shift @_;
	# needed to read values from configuration file
	my $cfg = shift @_;
	my $database = shift @_;

	my $xml;

	use parse_format;

	my $html = "";		# html formatted display output

	my %field_usage;	# counter for usage of each field

	# sort subrouting using order="" attribute
	sub by_order {
		my $va = $config->{indexer}->{$a}->{order} ||
			$config->{indexer}->{$a};
		my $vb = $config->{indexer}->{$b}->{order} ||
			$config->{indexer}->{$b};

		return $va <=> $vb;
	}

	my @sorted_tags;
	if ($cache->{tags_by_order}) {
		@sorted_tags = @{$cache->{tags_by_order}};
	} else {
		@sorted_tags = sort by_order keys %{$config->{indexer}};
		$cache->{tags_by_order} = \@sorted_tags;
	}

	if (! @sorted_tags) {
		print STDERR "WARNING: no tags for this type found in import_xml file!\n";
	}

	# lookup key
	my $lookup_key;

	# cache for field in pages
	delete $cache->{display_data};
	delete $cache->{swish_data};
	delete $cache->{swish_exact_data};
	delete $cache->{index_data};
	delete $cache->{index_delimiter};
	delete $cache->{distinct};
	my @page_fields;	# names of fields


	# subs used to produce output

	sub get_field_name($$$) {
		my ($config,$field,$field_usage) = @_;

		# find field name (signular, plural)
		my $field_name = "";
		if ($config->{indexer}->{$field}->{name_singular} && $field_usage == 1) {
			$field_name = $config->{indexer}->{$field}->{name_singular};
		} elsif ($config->{indexer}->{$field}->{name_plural}) {
			$field_name = $config->{indexer}->{$field}->{name_plural};
		} elsif ($config->{indexer}->{$field}->{name}) {
			$field_name = $config->{indexer}->{$field}->{name};
		} else {
			print STDERR "WARNING: field '$field' doesn't have 'name' attribute!";
		}

		if ($field_name) {
			$field_name = x($field_name);
			if (! $last_field_name) {
				$last_field_name = $field_name;
				return $last_field_name;
			} elsif ($field_name ne $last_field_name) {
				$last_field_name = $field_name;
				return $last_field_name;
			}
		}
	}


	# init variables for different types
	sub init_visible_type($) {
		my $type = shift;

		# swish, swish_exact, display, index, index_lookup
		# swish and display defaults
		my ($s,$se,$d,$i,$il) = (1,0,1,0,0);
		if (lc($type) eq "display") {
			$s = 0;
		} elsif (lc($type) eq "swish") {
			$d = 0;
		} elsif (lc($type) eq "index") {
			($s,$se,$d,$i) = (0,1,0,1);
		} elsif (lc($type) eq "swish_exact") {
			($s,$se,$d,$i) = (0,1,0,0);
		} elsif (lc($type) =~ /^lookup/) {
			($s,$se,$d,$i,$il) = (0,1,0,0,1);
		} elsif ($type) {
			print STDERR "WARNING: unknown type: $type\n";
		}
		return ($s,$se,$d,$i,$il);
	}


	# convert
	#
	# <tag>
	#  <delimiter>, </delimiter>
	#  <value>200a</value>
	# </tag>
	# 
	# to
	#
	# <tag delimiter=", ">200a</tag>
	#
	# but without loosing spaces in delimiter (becasue
	# new XML::Simple strips spaces in attribute values
	# as defined in XML specification)
	#
	sub unroll_x($) {
		my $x = shift;

		if (defined $x->{value}) {
			my ($v,$d) = ($x->{value}->{content}, $x->{delimiter}->{content});
			delete $x->{value};
			delete $x->{delimiter};
			$x->{content} = $v;
			$d =~ s#>$## if ($d && $broken_cdata);
			$x->{delimiter} = $d;
		}
		return $x;
	}

	# begin real work: go field by field
	foreach my $field (@sorted_tags) {

		$field=x($field);
		$field_usage{$field}++;

		my $swish_data = "";
		my $swish_exact_data = "";
		my $display_data = "";
		my @index_data;
		my $line_delimiter;

		my ($swish,$display);

		my $tag = $cfg->val($database, 'import_xml_tag') || $type2tag{$type} || die "can't find which tag to use for type $type";

		# is this field page-by-page?
		my $iterate_by_page = $config->{indexer}->{$field}->{iterate_by_page};
		push @page_fields,$field if ($iterate_by_page);
		my %page_max = ();
		# default line_delimiter if using
		my $page_line_delimiter = $config->{indexer}->{$field}->{page_line_delimiter} || '<br/>';
		$cache->{index_delimiter}->{$field} = $config->{indexer}->{$field}->{index_delimiter};
		my $distinct = $config->{indexer}->{$field}->{distinct};
		if ($distinct && !$iterate_by_page) {
			warn "WARNING: distinct is currently not supported without iterate_by_page!\n";
			$distinct = 0;
		}

		my $format_name = $config->{indexer}->{$field}->{format_name};
		my $format_delimiter = $config->{indexer}->{$field}->{format_delimiter};
		if ($format_name && $format_delimiter) {
			$cache->{format}->{$field}->{format_name} = $format_name;
			$cache->{format}->{$field}->{format_delimiter} = $format_delimiter;
		}

		foreach my $x (@{$config->{indexer}->{$field}->{$tag}}) {

			$x = unroll_x($x);

			my $format = x($x->{content});
			my $delimiter = x($x->{delimiter}) || ' ';

			my $repeat_off = 0;	# init repeatable offset

			my ($s,$se,$d,$i,$il) = init_visible_type($x->{type});

			# what will separate last line from this one?
			if ($display_data && $x->{append}) {
				$line_delimiter = $delimiter;
			} elsif ($display_data) {
				$line_delimiter = '<br/>';
			}

			# init vars so that we go into while...
			($swish,$display) = (1,1);

			sub mkformat($$) {
				my $x = shift || die "mkformat needs tag reference";
				my $data = shift || return;
				my $format_name = x($x->{format_name}) || return $data;
				my $fmt = x($config->{format}->{$format_name}->{content}) || die "<format name=\"$format_name\"> is not defined!";
				my $format_delimiter = x($x->{format_delimiter});
				my @data;
				if ($format_delimiter) {
					@data = split(/$format_delimiter/,$data);
				} else {
					push @data,$data;
				}

				if ($fmt) {
					my $nr = scalar $fmt =~ s/%s/%s/g;
					if (($#data+1) == $nr) {
						return sprintf($fmt,@data);
					} else {
						#print STDERR "mkformat: [$data] can't be split on [$format_delimiter] to $nr fields!\n";
						return $data;
					}
				} else {
					print STDERR "usage of link '$format_name' without defined format (<link> tag)\n";
				}
			}

			# while because of repeatable fields
			while ($swish || $display) {
				my $page = $repeat_off;
				$page_max{$field} = $page if ($iterate_by_page && $page > ($page_max{$field} || 0));
				($swish,$display) = parse_format($type, $format,$row,$repeat_off++,$import2cp);
				if ($repeat_off > 1000) {
					print STDERR "loop (more than 1000 repeatable fields) deteced in $row, $format\n";
					last;
				}

				# is this field is lookup?
				if ($display && $x->{lookup}) {
					my $null = "<!-- null -->";
					if ($use_lhash_cache) {
						if (!defined($cache->{lhash}->{$display})) {
							my $new_display = $lhash{$display};
							if (defined($new_display)) {
#print STDERR "lookup cache store '$display' = '$new_display'\n";
								$display = $new_display;
								$cache->{lhash}->{$display} = $new_display;
							} else {
#								print STDERR "WARNING: lookup for '$display' didn't find anything.\n";
								$display = "";
								$cache->{lhash}->{$display} = $null;
							}
						} else {
							$display = $cache->{lhash}->{$display};
						}
					} else {
						$display = $lhash{$display} || $null;
					}
				}

				# filter="name" ; filter this field through
				# filter/[name].pm
				my $filter = $x->{filter};
				if ($filter && !$cache->{filter_loaded}->{$filter}) {
					require "filter/".$filter.".pm";
					$cache->{filter_loaded}->{$filter}++;
				}
				# type="swish" ; field for swish
				if ($swish) {
					my $tmp = $swish;
					if ($filter && ($s || $se)) {
						no strict 'refs';
						$tmp = join(" ",&$filter($tmp)) if ($s || $se);
					}

					$swish_data .= $tmp if ($s && $tmp);
					$swish_exact_data .= "xxbxx $tmp xxexx " if ($tmp && $tmp ne "" && $se);
				}

				# type="display" ; field for display
				if ($d && $display) {
					my $ldel = $delimiter;
					if ($line_delimiter && $display_data) {
						$ldel = $line_delimiter;
					}
					if ($filter) {
						no strict 'refs';
						my @arr;
						foreach my $tmp (&$filter($display)) {
							my $tmp2 = mkformat($x,$tmp);
							push @arr,$tmp2 if ($tmp2);
						}
						$display_data .= $ldel if ($display_data && @arr);
						$display_data .= join($delimiter,@arr);
					} else {
						$display_data .= $ldel if ($display_data);
						my $tmp = mkformat($x,$display);
						$display_data .= $tmp if ($tmp);
					}
				}
						
				# type="index" ; insert into index
				my $idisplay;
				if ($i && $display) {
					$idisplay = $display;
					if ($filter) {
						no strict 'refs';
						$idisplay = &$filter($idisplay);
					}
					push @index_data, $idisplay if ($idisplay && !$iterate_by_page);
				}

				# store fields in lookup
				if ($il && $display) {
					if (lc($x->{type}) eq "lookup_key") {
						if ($lookup_key) {
							print STDERR "WARNING: try to redefine lookup_key (keys shouldn't be repeatable fields!)";
						} else {
							if ($filter) {
								no strict 'refs';
								$lookup_key = &$filter($display);
							} else {
								$lookup_key = $display;
							}
						}
					} elsif (lc($x->{type}) eq "lookup_val") {
						if ($lookup_key) {
							if ($filter) {
								no strict 'refs';
								$lhash{$lookup_key} = &$filter($display);
							} else {
								$lhash{$lookup_key} = $display;
							}
						} else {
							print STDERR "WARNING: no lookup_key defined for  '$display'?";
						}
					}

				}

				# store data for page-by-page repeatable fields
				if ($iterate_by_page) {
					sub iterate_fld($$$$$$) {
						my ($cache,$what,$field,$page,$data,$append) = @_;
						return if (!$data);

						my $ldel = $page_line_delimiter;
						$ldel = " " if ($append);
#print STDERR "line delimiter: ",Dumper($ldel) if ($ldel);
						if (! $cache->{$what}->{$field}->[$page]) {
							push @{$cache->{$what}->{$field}->[$page]}, {
								data => $data,
								delimiter => $ldel,
							};
						}
					}

					if ($display_data) {
						iterate_fld($cache,'display_data',$field,$page,$display_data,$x->{append});
					}
						$display_data = "";
					if ($swish_data) {
						iterate_fld($cache,'swish_data',$field,$page,$swish_data,$x->{append});
						$swish_data = "";
					}
					if ($swish_exact_data) {
						iterate_fld($cache,'swish_exact_data',$field,$page,$swish_exact_data,$x->{append});
						$swish_exact_data = "";
					}

					if ($idisplay) {
						my $ldel=$page_line_delimiter;
						my @index_data;
						if ($cache->{index_data}->{$field}->[$page]) {

							@index_data = @{$cache->{index_data}->{$field}->[$page]};
						}
						if ($x->{append}) {
							if (@index_data) {
								$index_data[$#index_data] .= $idisplay;
							} else {
								push @index_data, $idisplay;
							}
						} else {
							push @index_data, $idisplay;
						}
						$idisplay = "";
						@{$cache->{index_data}->{$field}->[$page]} = @index_data;
					}
				}
			}

			if (! $iterate_by_page) {
				my $idel = $x->{index_delimiter};
				# fill data in index
				foreach my $tmp (@index_data) {
					my $i = $d = $tmp;
					if ($idel && $tmp =~ m/$idel/) {
						($i,$d) = split(/$idel/,$tmp);
					}
					$index->insert($field, $i, $d, $path);
				}
				@index_data = ();
			}
		}

		# now try to parse variables from configuration file
		foreach my $x (@{$config->{indexer}->{$field}->{'config'}}) {

			$x = unroll_x($x);

			my $delimiter = x($x->{delimiter}) || ' ';
			my $val = $cfg->val($database, x($x->{content}));

			# FIXME index_lookup is not supported!
			my ($s,$se,$d,$i,$il) = init_visible_type($x->{type});

			if ($val) {
				$display_data .= $delimiter.$val if ($d);
				$swish_data .= " ".$val if ($s);
				$index->insert($field, $val, $val, $path) if ($i);
			}

			if ($iterate_by_page) {
				# FIXME data from config tag will appear just
				# on first page!!!
				my $page = 0;
				if ($display_data) {
					push @{$cache->{display_data}->{$field}->[$page]}, { data => $display_data };
					$display_data = "";
				}
				if ($swish_data) {
					push @{$cache->{swish_data}->{$field}->[$page]}, { data => $swish_data };
					$swish_data = "";
				}
				if ($swish_exact_data) {
					push @{$cache->{swish_exact_data}->{$field}->[$page]}, { data => $swish_exact_data };
					$swish_exact_data = "";
				}
			}
		}

		# save data page-by-page
		foreach my $field (@page_fields) {
			my $nr_pages = $page_max{$field} || next;
#print STDERR "field '$field' iterate over ",($nr_pages || 0)," pages...\n";
#print STDERR Dumper($cache->{display_data});
			my $seen;	# used for distinct
			for (my $page=0; $page <= $nr_pages; $page++) {
				my $display_data;
				my $delimiter = '';
				foreach my $element (@{ $cache->{display_data}->{$field}->[$page] }) {
					my $data = $element->{data};
					die "BUG! no data in element?" unless ($data);

					if ($distinct) {
						next if ($cache->{distinct}->{$field}->{ $data });
						$cache->{distinct}->{$field}->{ $data } = 1;
					}

					if ($cache->{format}->{$field}) {
						my $tmp = mkformat($cache->{format}->{$field},$data);
						$display_data .= $delimiter . $tmp if ($tmp);
					} else {
						$display_data .= $delimiter . $data;
					}
					$delimiter = $element->{delimiter} if ($element->{delimiter});
				}

				if ($display_data) { # default
					if ($field eq "headline") {
						$xml .= xmlify("headline", $display_data);
					} else {

						# fallback to empty field name if needed
						$html .= get_field_name($config,$field,$field_usage{$field}) || '';
						$html .= "#-#".$display_data."###\n";
					}
				}
				
				my $swish_data = join(" ",map { $_->{data} } @{ $cache->{swish_data}->{$field}->[$page] });
				if ($swish_data) {
					# remove extra spaces
					$swish_data =~ s/ +/ /g;
					$swish_data =~ s/ +$//g;

					$xml .= xmlify($field."_swish", my_unac_string($codepage,$swish_data));
				}

				my $swish_exact_data = join(" ", map { $_->{data} } @{ $cache->{swish_exact_data}->{$field}->[$page] });
				if ($swish_exact_data) {
					$swish_exact_data =~ s/ +/ /g;
					$swish_exact_data =~ s/ +$//g;

					# add delimiters before and after word.
					# That is required to produce exact match
					$xml .= xmlify($field."_swish_exact", my_unac_string($codepage,$swish_exact_data));
				}
				
				my $idel = $cache->{index_delimiter}->{$field};
				foreach my $tmp (@{$cache->{index_data}->{$field}->[$page]}) {
					my $i = $tmp;
					my $d = $tmp;
					if ($idel && $tmp =~ m/$idel/) {
						($i,$d) = split(/$idel/,$tmp);
					}
					$index->insert($field, $i, $d, $path);
#print STDERR "index [$idel] $field: $i --> $d [$path]\n";
				}
			}
	
		}
		
		if (! $iterate_by_page) {
			if ($display_data) {
				if ($field eq "headline") {
					$xml .= xmlify("headline", $display_data);
				} else {

					# fallback to empty field name if needed
					$html .= get_field_name($config,$field,$field_usage{$field}) || '';
					$html .= "#-#".$display_data."###\n";
				}
			}
			if ($swish_data) {
				# remove extra spaces
				$swish_data =~ s/ +/ /g;
				$swish_data =~ s/ +$//g;

				$xml .= xmlify($field."_swish", my_unac_string($codepage,$swish_data));
			}

			if ($swish_exact_data) {
				$swish_exact_data =~ s/ +/ /g;
				$swish_exact_data =~ s/ +$//g;

				# add delimiters before and after word.
				# That is required to produce exact match
				$xml .= xmlify($field."_swish_exact", my_unac_string($codepage,$swish_exact_data));
			}
		}
	}

	# dump formatted output in <html>
	if ($html) {
		#$xml .= xmlify("html",$html);
		$xml .= "<html><![CDATA[ $html ]]></html>";
	}
	
	if ($xml) {
		$xml .= $add_xml if ($add_xml);
		return "<xml>\n$xml</xml>\n";
	} else {
		return;
	}
}

##########################################################################

# read configuration for this script
my $cfg = new Config::IniFiles( -file => $config_file );

# read global.conf configuration
my $cfg_global = new Config::IniFiles( -file => 'global.conf' );

# open index
$index = new index_DBI(
		$cfg_global->val('global', 'dbi_dbd'),
		$cfg_global->val('global', 'dbi_dsn'),
		$cfg_global->val('global', 'dbi_user'),
		$cfg_global->val('global', 'dbi_passwd') || '',
	);

my $show_progress = $cfg_global->val('global', 'show_progress');

my $my_unac_filter = $cfg_global->val('global', 'my_unac_filter');
if ($my_unac_filter) {
	print STDERR "using $my_unac_filter to filter characters for search\n";
	require $my_unac_filter;
} else {
	print STDERR "### fallback to default my_unac_string!\n";
	eval q{
	sub main::my_unac_string($$) {
		my ($charset, $string) = (@_);
		return $string;
	}
	};
}

foreach my $database ($cfg->Sections) {

	# save database name in global variable path for later
	# (need for index filter creation)
	$path = $database;

	my $type = lc($cfg -> val($database, 'type')) || die "$database doesn't have 'type' defined";
	my $add_xml = $cfg -> val($database, 'xml');	# optional

	# create new lookup file
	my $lookup_file = $cfg -> val($database, 'lookup_newfile'); # optional
	if ($lookup_file) {
		if (! -e $lookup_file) {
			open(LOOKUP, "> $lookup_file") || die "can't create $lookup_file': $!";
			close(LOOKUP);
		}
		tie %lhash, 'GDBM_File', $lookup_file, &GDBM_NEWDB, 0644;
		#tie %lhash, 'TDB_File', $lookup_file, TDB_CLEAR_IF_FIRST, O_RDWR, 0644;
		print STDERR "creating lookup file '$lookup_file'\n";
		# delete memory cache for lookup file
		delete $cache->{lhash};
	}

	# open existing lookup file
	$lookup_file = $cfg -> val($database, 'lookup_open'); # optional
	if ($lookup_file) {
		tie %lhash, 'GDBM_File', $lookup_file, &GDBM_READER, 0644;
		#tie %lhash, 'TDB_File', $lookup_file, TDB_DEFAULT, O_RDWR, 0644;
		print STDERR "opening lookup file '$lookup_file'\n";
	}

	my $import_xml_type = $cfg->val($database, 'import_xml_file') || $type;
	my $import_xml_file = "./import_xml/$import_xml_type.xml";

	if (! -r $import_xml_file) {
		print STDERR "ERROR: file $import_xml_file not readable skipping!\n";
		next;
	}

	print STDERR "reading $import_xml_file\n";

	# extract just type basic
	my $type_base = $type;
	$type_base =~ s/_.+$//g;

	my $tag = $cfg->val($database, 'import_xml_tag') || $type2tag{$type_base} || die "can't find which tag to use for type $type";
	$config=XMLin($import_xml_file, ForceArray => [ $tag, 'config', 'format' ], ForceContent => 1 );

	# check for broken XML::Simple
	if ( $broken_cdata ) {
		map {
			$config->{format}->{$_}->{content} =~ s#>$##;
		} keys %{ $config->{format} };
	}

	# helper for progress bar
	sub fmt_time {
		my $t = shift || 0;
		my $out = "";

		my ($ss,$mm,$hh) = gmtime($t);
		$out .= "${hh}h" if ($hh);
		$out .= sprintf("%02d:%02d", $mm,$ss);
		$out .= "  " if ($hh == 0);
		return $out;
	}

	# output current progress indicator
	my $last_p = 0;
	my $start_t = time();
	sub progress {
		return if (! $show_progress);
		my $current = shift;
		my $total = shift || 1;
		my $p = int($current * 100 / $total);
		if ($p < $last_p || $current == 1) {
			$start_t = time();
			$last_p = 0;
		} elsif ($p != $last_p) {
			my $rate = ($current / (time() - $start_t || 1));
			my $eta = ($total-$current) / ($rate || 1);
			printf STDERR ("%5d [%-38s] %-5d %0.1f/s %s\r",$current,"=" x ($p/3)."$p%>", $total, $rate, fmt_time($eta));
			$last_p = $p;
		}
	}

	my $fake_dir = 1;
	my $fake_pos = 0;
	my $last_fake_t = time();
	sub fakeprogress {
		return if (! $show_progress);
		my $current = shift @_;

		my @ind = ('-','\\','|','/','-','\\','|','/');

		if ($current < $fake_pos) {
			$start_t = time();
			$last_fake_t = 0;
			$fake_dir = 1;
			$fake_pos = 0;
		}

		if (time()-$last_fake_t >= 1) {
			$last_fake_t = time();
			$fake_pos += $fake_dir;
			$fake_dir = -$fake_dir if ($fake_pos > 38);
		}

		if ($current % 10 == 0) {
			my $rate = ($current / (time() - $start_t || 1));
			printf STDERR ("%5d [%-38s] %0.1f/s\r",$current, " " x $fake_pos .$ind[($current / 10) % 8], $rate);
		}
	}

	# now read database

	# erase cache for tags by order in this database
	delete $cache->{tags_by_order};

	if ($type_base eq "isis") {

		my $isis_db = $cfg -> val($database, 'isis_db') || die "$database doesn't have 'isis_db' defined!";

		$import2cp = Text::Iconv->new($config->{isis_codepage},$codepage);
		my $db = new Biblio::Isis(
			isisdb => $isis_db,
			join_subfields_with => ' ; ',
		);

		if (! $db) {
			print STDERR "FATAL: can't read ISIS database: $isis_db, skipping...\n";
			next;
		}

		my $max_rowid = $db->count if ($db);

		print STDERR "Reading database: $isis_db [$max_rowid rows]\n";

		for (my $row_id = 1; $row_id <= $max_rowid; $row_id++ ) {
			my $row = $db->to_hash( $row_id );
			if ($row) {

				$row->{mfn} = $row_id;
				$row->{record} = $db->{record};

				progress($row->{mfn}, $max_rowid);

				my $swishpath = $path."#".int($row->{mfn});

				if (my $xml = data2xml($type_base,$row,$add_xml,$cfg,$database)) {
					$xml = $cp2utf->convert($xml);
					use bytes;	# as opposed to chars
					print "Path-Name: $swishpath\n";
					print "Content-Length: ".(length($xml)+1)."\n";
					print "Document-Type: XML\n\n$xml\n";
				}
			}
		}
		print STDERR "\n";

	} elsif ($type_base eq "excel") {
		require Spreadsheet::ParseExcel;
		require Spreadsheet::ParseExcel::Utility;
		import Spreadsheet::ParseExcel::Utility qw(int2col);
		
		$import2cp = Text::Iconv->new($config->{excel_codepage},$codepage);
		my $excel_file = $cfg -> val($database, 'excel_file') || die "$database doesn't have 'excel_file' defined!";

		my $sheet = x($config->{sheet}) || die "no sheet in $type.xml";
		my $start_row = x($config->{start_row}) || die "no start_row in $type.xml";
		$start_row--;

		my $oBook = Spreadsheet::ParseExcel::Workbook->Parse($excel_file) || die "can't open Excel file '$excel_file'";

		my $sheet_nr = 0;
		foreach my $oWks (@{$oBook->{Worksheet}}) {
			#print STDERR "-- SHEET $sheet_nr:", $oWks->{Name}, "\n";
			last if ($oWks->{Name} eq $sheet);
			$sheet_nr++;
		}

		my $oWorksheet = $oBook->{Worksheet}[$sheet_nr];
	
		print STDERR "using sheet: ",$oWorksheet->{Name},"\n";
		defined ($oWorksheet) || die "can't find sheet '$sheet' in $excel_file";
		my $end_row = x($config->{end_row}) || $oWorksheet->{MaxRow};

		for(my $iR = $start_row ; defined $end_row && $iR <= $end_row ; $iR++) {
			my $row;
			for(my $iC = $oWorksheet->{MinCol} ; defined $oWorksheet->{MaxCol} && $iC <= $oWorksheet->{MaxCol} ; $iC++) {
				my $cell = $oWorksheet->{Cells}[$iR][$iC];
				if ($cell) {
					# this conversion is a cludge.
					# Files from Excell could have
					# characters which don't fit into
					# destination encoding.
					$row->{int2col($iC)} = $utf2cp->convert($cell->Value) || $cell->Value;
				}
			}

			progress($iR, $end_row);

#			print "row[$iR/$end_row] ";
#			foreach (keys %{$row}) {
#				print "$_: ",$row->{$_},"\t";
#			}
#			print "\n";

			my $swishpath = $database."#".$iR;

			next if (! $row);

			if (my $xml = data2xml($type_base,$row,$add_xml,$cfg,$database)) {
				$xml = $cp2utf->convert($xml);
				use bytes;	# as opposed to chars
				print "Path-Name: $swishpath\n";
				print "Content-Length: ".(length($xml)+1)."\n";
				print "Document-Type: XML\n\n$xml\n";
			}
		}

		print STDERR "\n";

	} elsif ($type_base eq "marc") {

		require MARC::File::USMARC;
		
		$import2cp = Text::Iconv->new($config->{marc_codepage},$codepage);
		my $marc_file = $cfg -> val($database, 'marc_file') || die "$database doesn't have 'marc_file' defined!";

		# optional argument is format
		warn "marc_format is no longer used!" if ($config->{marc_format});
		print STDERR "Reading MARC file '$marc_file'\n";

		my $marc = MARC::File::USMARC->in( $marc_file );

		if (! $marc) {
			print STDERR "FATAL: can't read MARC file: $marc_file, skipping...\n";
			next;
		}

		# count records in MARC file
		sub marc_count {
			my $filename = shift || die;
			my $file = MARC::File::USMARC->in($filename) || return;
			my $count = 0;
			while ($file->skip()) {
				$count++;
			}
			return $count;
		}

		my $count = marc_count($marc_file) || warn "no records in '$marc_file'?";

		my $i = 1;

		while( my $rec = $marc->next() ) {

			progress($i,$count);

			my $swishpath = $database."#".$i;

			if (my $xml = data2xml($type_base,$rec,$add_xml,$cfg,$database)) {
				$xml = $cp2utf->convert($xml);
				use bytes;	# as opposed to chars
				print "Path-Name: $swishpath\n";
				print "Content-Length: ".(length($xml)+1)."\n";
				print "Document-Type: XML\n\n$xml\n";
			}

			$i++;
		}

		print STDERR "\n";

	} elsif ($type_base eq "feed") {

		$import2cp = Text::Iconv->new($config->{feed_codepage},$codepage);
		my $prog = x($config->{prog}) || die "$database doesn't have 'prog' defined!";

		print STDERR "Reading feed from program '$prog'\n";

		open(FEED,"feeds/$prog |") || die "can't start $prog: $!";

		my $i=1;	# record nr.

		my $data;
		my $line=1;

		while (<FEED>) {
			chomp;

			if (/^$/) {
				my $swishpath = $database."#".$i++;

				if (my $xml = data2xml($type_base,$data,$add_xml,$cfg,$database)) {
					$xml = $cp2utf->convert($xml);
					use bytes;	# as opposed to chars
					print "Path-Name: $swishpath\n";
					print "Content-Length: ".(length($xml)+1)."\n";
					print "Document-Type: XML\n\n$xml\n";
				}
				$line = 1;
				$data = {};
				next;
			}

			$line = $1 if (s/^(\d+):\s*//);
			$data->{$line++} = $_;

			fakeprogress($i);

		}
		# close lookup
		untie %lhash if (%lhash);

	} elsif ($type_base eq "dbf") {

		my $dbf_file = $cfg -> val($database, 'dbf_file') || die "$database doesn't have 'dbf_file' defined!";
		my $dbf_codepage = $cfg -> val($database, 'dbf_codepage') || die "$database doesn't have 'dbf_codepage' defined!";
		my $dbf_mapping = $cfg -> val($database, 'dbf_mapping') || die "$database doesn't have 'dbf_mapping' defined!";

		$import2cp = Text::Iconv->new($dbf_codepage,$codepage);
		require XBase;
		my $db = new XBase $dbf_file;

		if (! $db) {
			print STDERR "ERROR: can't read DBF database: $dbf_file, skipping...\n";
			next;
		}

		my $max_rowid = $db->last_record;

		print STDERR "Reading database: $dbf_file [$max_rowid rows]\n";

		my %dbf2iso;
		foreach my $m (split(/[\n\r]+/,$dbf_mapping)) {
			my ($col,$fld) = split(/\s+/,$m,2);
			$dbf2iso{$col} = $fld;
		}

#print STDERR "## dbf2iso: ",Dumper(\%dbf2iso),"\n## /dbf2iso\n";

		# bad, bad...
		require "to_hash.pm";

		foreach my $row_id (0 .. $max_rowid) {
			my $dbf_row = $db->get_record_as_hash($row_id);
			if ($dbf_row) {

#print STDERR "## dbf_row: ",Dumper($dbf_row),"\n## /dbf_row\n";
				# apply mapping from config file
				# all unspecified records will get _ in
				# front of them - _DELETE will be __DELETE
				my $rec;
				map { 
					my $new_fld = $dbf2iso{$_} || '_'.$_;
					my $data = $dbf_row->{$_};
					push @{ $rec->{$new_fld} }, $data if ($data && $data !~ /^(?:\s+|\$a\.|)$/);
				} keys %{$dbf_row};
#print STDERR "## rec: ",Dumper($rec),"\n## /rec\n";
				my $row = to_hash($row_id+1, $rec);

				$row->{mfn} = $row_id+1;
				$row->{record} = $rec;

#print STDERR "## row: ",Dumper($row),"\n## /row\n";
				progress($row->{mfn}, $max_rowid);

				my $swishpath = $path."#".int($row->{mfn});

				if (my $xml = data2xml($type_base,$row,$add_xml,$cfg,$database)) {
					$xml = $cp2utf->convert($xml);
					use bytes;	# as opposed to chars
					print "Path-Name: $swishpath\n";
					print "Content-Length: ".(length($xml)+1)."\n";
					print "Document-Type: XML\n\n$xml\n";
				}
			}
		}
		print STDERR "\n";
	}
}

# call this to commit index
$index->close;

1;
__END__
##########################################################################

=head1 NAME

all2xml.pl - read various file formats and dump XML for SWISH-E

=head1 SYNOPSYS

 $ all2xml.pl [test.conf]

=head1 DESCRIPTION

This command will read ISIS data file using Biblio::Isis perl module, MARC
records using MARC::File module and optionally Micro$oft Excel files to
create one XML file for usage with I<SWISH-E> indexer. Dispite it's name,
this script B<isn't general xml generator> from isis files (isis allready
has something like that). Output of this script is tailor-made for SWISH-E.

If no configuration file is specified, it will use default one called
C<all2xml.conf>.

=head1 BUGS

Documentation is really lacking. However, in true Open Source spirit, source
is best documentation. I even made considerable effort to comment parts
which are not intuitively clear, so...

=head1 AUTHOR

Dobrica Pavlinusic <dpavlin@rot13.org>

=head1 COPYRIGHT

GNU Public License (GPL) v2 or later

=head1 SEE ALSO

SWISH-E web site at http://www.swish-e.org

=cut