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# Vend::TextSearch - Search indexes with Perl
#
# Adapted for use with Interchange from Search::TextSearch
#
# Copyright (C) 2002-2017 Interchange Development Group
# Copyright (C) 1996-2002 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public
# License along with this program; if not, write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301 USA.
package Vend::TextSearch;
require Vend::Search;
require Exporter;
use vars qw(@ISA);
@ISA = qw(Vend::Search);
$VERSION = '2.19';
use Search::Dict;
use strict;
no warnings qw(uninitialized numeric);
sub array {
my ($s, $opt) = @_;
$s->{mv_list_only} = 1; # makes perform_search only return results array
return Vend::Scan::perform_search($opt, undef, $s);
}
sub hash {
my ($s, $opt) = @_;
$s->{mv_return_reference} = 'HASH';
$s->{mv_list_only} = 1; # makes perform_search only return results array
return Vend::Scan::perform_search($opt, undef, $s);
}
sub list {
my ($s, $opt) = @_;
$s->{mv_return_reference} = 'LIST';
$s->{mv_list_only} = 1; # makes perform_search only return results array
return Vend::Scan::perform_search($opt, undef, $s);
}
my %Default = (
matches => 0,
mv_head_skip => 1,
mv_index_delim => "\t",
mv_matchlimit => 50,
mv_min_string => 1,
);
sub init {
my ($s, $options) = @_;
@{$s}{keys %Default} = (values %Default);
$s->{mv_base_directory} = $Vend::Cfg->{ProductDir} || 'products',
$s->{mv_begin_string} = [];
$s->{mv_all_chars} = [1];
$s->{mv_case} = [];
$s->{mv_column_op} = [];
$s->{mv_negate} = [];
$s->{mv_numeric} = [];
$s->{mv_orsearch} = [];
$s->{mv_searchspec} = [];
$s->{mv_search_group} = [];
$s->{mv_search_field} = [];
$s->{mv_search_file} = $::Variable->{MV_DEFAULT_SEARCH_FILE}
|| ['products.asc'];
$s->{mv_searchspec} = [];
$s->{mv_sort_option} = [];
$s->{mv_substring_match} = [];
for(keys %$options) {
$s->{$_} = $options->{$_};
}
return;
}
sub new {
my ($class, %options) = @_;
my $s = new Vend::Search;
bless $s, $class;
$s->init(\%options);
return $s;
}
sub search {
my($s,%options) = @_;
my(@out);
my($limit_sub,$return_sub,$delayed_return);
my($dict_limit,$f,$key,$val);
my($searchfile, @searchfiles);
my(@specs);
my(@pats);
while (($key,$val) = each %options) {
$s->{$key} = $val;
}
unless (@searchfiles = @{$s->{mv_search_file}}) {
@searchfiles = @{$::Variable->{MV_DEFAULT_SEARCH_FILE}};
}
#::logDebug("searchfiles=@searchfiles");
for(@searchfiles) {
$_ = Vend::Util::catfile($s->{mv_base_directory}, $_)
unless Vend::Util::file_name_is_absolute($_);
}
# Auto-index search
if( $s->{mv_dict_look}
and defined $s->{mv_dict_limit}
and $s->{mv_dict_limit} =~ /[^-0-9]/ )
{
my $f = $s->{mv_dict_limit};
$s->{mv_dict_limit} = -1;
for (@searchfiles) {
next unless -f "$_.$f";
$_ .= ".$f";
$s->{mv_return_fields} = [1];
}
}
#::logDebug("search: self=" . ::Vend::Util::uneval_it({%$s}));
$s->{mv_return_delim} = $s->{mv_index_delim}
unless defined $s->{mv_return_delim};
@specs = @{$s->{mv_searchspec}};
@pats = $s->spec_check(@specs);
# clear errors for non-eval code paths
undef $@;
if ($s->{mv_coordinate}) {
undef $f;
}
elsif ($s->{mv_return_all}) {
$f = sub {1};
}
elsif ($s->{mv_orsearch}[0]) {
eval {$f = $s->create_search_or(
$s->get_scalar(
qw/mv_case mv_substring_match mv_negate/
),
@pats )};
}
else {
eval {$f = $s->create_search_and(
$s->get_scalar(
qw/mv_case mv_substring_match mv_negate/
),
@pats )};
}
$@ and return $s->search_error("Function creation: $@");
local($/) = $s->{mv_record_delim} || "\n";
$s->save_specs();
#::logDebug("search before open @searchfiles: self=" . ::Vend::Util::uneval_it({%$s}));
#::logDebug("searchfiles=@searchfiles");
while ( $searchfile = shift @searchfiles ) {
my $field_names;
-f $searchfile && open(SEARCH, "< $searchfile")
or ::logError( "Couldn't open search file '$searchfile': $!"), next;
$s->adjust_delimiter(\*SEARCH) if $s->{mv_delimiter_auto};
my $line;
# Get field names only if no sort (will throw it off) or
# not already defined
if($s->{mv_head_skip} == 1) {
chomp($field_names = <SEARCH>);
}
elsif($s->{mv_head_skip} > 1) {
while(<SEARCH>) {
chomp($field_names = $_);
last if $. >= $s->{mv_head_skip};
}
}
if($field_names) {
$field_names =~ s/^\s+//;
$field_names =~ s/\s+$//;
my @laundry = (qw/mv_search_field mv_range_look mv_return_fields/);
$s->hash_fields(
[ split /\Q$s->{mv_index_delim}/, $field_names ],
@laundry,
);
undef $field_names;
}
my $prospect;
eval {
# 1 refers to fact you have to make ref from line
($limit_sub, $prospect) = $s->get_limit($f, 1);
};
$@ and return $s->search_error("Limit subroutine creation: $@");
$f = $prospect if $prospect;
eval {($return_sub, $delayed_return) = $s->get_return( undef, 1 )};
$@ and return $s->search_error("Return subroutine creation: $@");
if($s->{mv_dict_end}) {
if(!$s->{mv_dict_order} && !$s->{mv_dict_fold}) {
$dict_limit = sub {
$_[0] gt $s->{mv_dict_end};
};
}
elsif(!$s->{mv_dict_order}) {
$dict_limit = sub {
"\L$_[0]" gt "\L$s->{mv_dict_end}";
};
}
elsif(!$s->{mv_dict_fold}) {
$dict_limit = sub {
my($line) = @_;
my($end) = $s->{mv_dict_end};
$line =~ tr/A-Za-z0-9_ //cd;
$end =~ tr/A-Za-z0-9_ //cd;
$line gt $end;
};
}
else {
$dict_limit = sub {
my($line) = lc @_;
my($end) = lc $s->{mv_dict_end};
$line =~ tr/a-z0-9_ //cd;
$end =~ tr/a-z0-9_ //cd;
$line gt $end;
};
}
}
if($s->{mv_dict_look}) {
look(\*SEARCH,
$s->{mv_dict_look},
$s->{mv_dict_order},
$s->{mv_dict_fold});
}
if($s->{mv_dict_end} && defined $limit_sub) {
while(<SEARCH>) {
last if $dict_limit->($_);
next unless $limit_sub->($_);
chomp;
(push @out, $searchfile and last)
if $s->{mv_return_file_name};
push @out, $return_sub->($_);
}
}
elsif($s->{mv_dict_end}) {
while(<SEARCH>) {
last if $dict_limit->($_);
next unless &$f();
chomp;
(push @out, $searchfile and last)
if $s->{mv_return_file_name};
push @out, $return_sub->($_);
}
}
elsif($limit_sub) {
#::logDebug("limit_sub");
while(<SEARCH>) {
next unless $limit_sub->($_);
chomp;
(push @out, $searchfile and last)
if $s->{mv_return_file_name};
push @out, $return_sub->($_);
}
}
elsif (! $f) {
return $s->search_error('No search definition');
}
else {
#::logDebug("no limit_sub");
while(<SEARCH>) {
next unless &$f();
chomp;
(push @out, $searchfile and last)
if $s->{mv_return_file_name};
push @out, $return_sub->($_);
}
}
close SEARCH;
$s->restore_specs();
}
#::logDebug("before delayed return: self=" . ::Vend::Util::uneval_it({%$s}));
#::logDebug("before delayed return: out=" . ::Vend::Util::uneval_it(\@out));
# Search the results and return
if($s->{mv_next_search}) {
@out = $s->search_reference(\@out);
#::logDebug("did next_search: " . ::uneval(\@out));
}
$s->{matches} = scalar(@out);
if($delayed_return and $s->{matches} > 0) {
$s->hash_fields($s->{mv_field_names}, qw/mv_sort_field/);
#::logDebug("after hash fields: self=" . ::Vend::Util::uneval_it({%$s}));
$s->sort_search_return(\@out);
$delayed_return = $s->get_return(1);
@out = map { $delayed_return->($_) } @out;
}
#::logDebug("after delayed return: self=" . ::Vend::Util::uneval_it({%$s}));
#::logDebug("after delayed return: out=" . ::Vend::Util::uneval_it(\@out));
if($s->{mv_unique}) {
my %seen;
@out = grep ! $seen{$_->[0]}++, @out;
}
if($s->{mv_max_matches} > 0) {
splice @out, $s->{mv_max_matches};
}
$s->{matches} = scalar(@out);
if ($s->{matches} > $s->{mv_matchlimit} and $s->{mv_matchlimit} > 0) {
$s->save_more(\@out)
or ::logError("Error saving matches: $!");
if ($s->{mv_first_match}) {
splice(@out,0,$s->{mv_first_match});
$s->{mv_next_pointer} = $s->{mv_first_match} + $s->{mv_matchlimit};
$s->{mv_next_pointer} = 0
if $s->{mv_next_pointer} > $s->{matches};
}
elsif ($s->{mv_start_match}) {
my $comp = $s->{mv_start_match};
my $i = -1;
my $found;
for(@out) {
$i++;
next unless $_->[0] eq $comp;
$found = $i;
last;
}
if(! $found and $s->{mv_numeric}[0]) {
for(@out) {
$i++;
next unless $_->[0] >= $comp;
$found = $i;
last;
}
}
elsif (! $found) {
for(@out) {
$i++;
next unless $_->[0] ge $comp;
$found = $i;
last;
}
}
if($found) {
splice(@out,0,$found);
$s->{mv_first_match} = $found;
$s->{mv_next_pointer} = $found + $s->{mv_matchlimit};
$s->{mv_next_pointer} = 0
if $s->{mv_next_pointer} > $s->{matches};
}
}
$#out = $s->{mv_matchlimit} - 1;
}
if(! $s->{mv_return_reference}) {
$s->{mv_results} = \@out;
return $s;
}
elsif($s->{mv_return_reference} eq 'LIST') {
my $col = scalar @{$s->{mv_return_fields}};
@out = map { join $s->{mv_return_delim}, @$_ } @out;
$s->{mv_results} = join $s->{mv_record_delim}, @out;
}
elsif($s->{mv_return_reference} eq 'HASH') {
my @names;
@names = @{ $s->{mv_field_names} }[ @{$s->{mv_return_fields}} ];
$names[0] eq '0' and $names[0] = 'code';
my @ary;
for (@out) {
my $h = {};
@{ $h } {@names} = @$_;
push @ary, $h;
}
$s->{mv_results} = \@ary;
}
return $s;
}
# Unfortunate hack need for Safe searches
*create_search_and = \&Vend::Search::create_search_and;
*create_search_or = \&Vend::Search::create_search_or;
*dump_options = \&Vend::Search::dump_options;
*escape = \&Vend::Search::escape;
*get_limit = \&Vend::Search::get_limit;
*get_return = \&Vend::Search::get_return;
*get_scalar = \&Vend::Search::get_scalar;
*hash_fields = \&Vend::Search::hash_fields;
*map_ops = \&Vend::Search::map_ops;
*more_matches = \&Vend::Search::more_matches;
*range_check = \&Vend::Search::range_check;
*restore_specs = \&Vend::Search::restore_specs;
*save_context = \&Vend::Search::save_context;
*save_more = \&Vend::Search::save_more;
*save_specs = \&Vend::Search::save_specs;
*saved_params = \&Vend::Search::saved_params;
*search_error = \&Vend::Search::search_error;
*sort_search_return = \&Vend::Search::sort_search_return;
*spec_check = \&Vend::Search::spec_check;
*splice_specs = \&Vend::Search::splice_specs;
1;
__END__
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