Adding upstream version 2.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

analysis/lang/no/analyzer_no.go

@@ -0,0 +1,60 @@
+//  Copyright (c) 2018 Couchbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 		http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package no
+
+import (
+	"github.com/blevesearch/bleve/v2/analysis"
+	"github.com/blevesearch/bleve/v2/registry"
+
+	"github.com/blevesearch/bleve/v2/analysis/token/lowercase"
+	"github.com/blevesearch/bleve/v2/analysis/tokenizer/unicode"
+)
+
+const AnalyzerName = "no"
+
+func AnalyzerConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.Analyzer, error) {
+	unicodeTokenizer, err := cache.TokenizerNamed(unicode.Name)
+	if err != nil {
+		return nil, err
+	}
+	toLowerFilter, err := cache.TokenFilterNamed(lowercase.Name)
+	if err != nil {
+		return nil, err
+	}
+	stopNoFilter, err := cache.TokenFilterNamed(StopName)
+	if err != nil {
+		return nil, err
+	}
+	stemmerNoFilter, err := cache.TokenFilterNamed(SnowballStemmerName)
+	if err != nil {
+		return nil, err
+	}
+	rv := analysis.DefaultAnalyzer{
+		Tokenizer: unicodeTokenizer,
+		TokenFilters: []analysis.TokenFilter{
+			toLowerFilter,
+			stopNoFilter,
+			stemmerNoFilter,
+		},
+	}
+	return &rv, nil
+}
+
+func init() {
+	err := registry.RegisterAnalyzer(AnalyzerName, AnalyzerConstructor)
+	if err != nil {
+		panic(err)
+	}
+}

analysis/lang/no/analyzer_no_test.go

@@ -0,0 +1,70 @@
+//  Copyright (c) 2018 Couchbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 		http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package no
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/blevesearch/bleve/v2/analysis"
+	"github.com/blevesearch/bleve/v2/registry"
+)
+
+func TestNorwegianAnalyzer(t *testing.T) {
+	tests := []struct {
+		input  []byte
+		output analysis.TokenStream
+	}{
+		// stemming
+		{
+			input: []byte("havnedistriktene"),
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("havnedistrikt"),
+				},
+			},
+		},
+		{
+			input: []byte("havnedistrikter"),
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("havnedistrikt"),
+				},
+			},
+		},
+		// stop word
+		{
+			input:  []byte("det"),
+			output: analysis.TokenStream{},
+		},
+	}
+
+	cache := registry.NewCache()
+	analyzer, err := cache.AnalyzerNamed(AnalyzerName)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, test := range tests {
+		actual := analyzer.Analyze(test.input)
+		if len(actual) != len(test.output) {
+			t.Fatalf("expected length: %d, got %d", len(test.output), len(actual))
+		}
+		for i, tok := range actual {
+			if !reflect.DeepEqual(tok.Term, test.output[i].Term) {
+				t.Errorf("expected term %s (% x) got %s (% x)", test.output[i].Term, test.output[i].Term, tok.Term, tok.Term)
+			}
+		}
+	}
+}

analysis/lang/no/stemmer_no.go

@@ -0,0 +1,52 @@
+//  Copyright (c) 2018 Couchbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 		http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package no
+
+import (
+	"github.com/blevesearch/bleve/v2/analysis"
+	"github.com/blevesearch/bleve/v2/registry"
+
+	"github.com/blevesearch/snowballstem"
+	"github.com/blevesearch/snowballstem/norwegian"
+)
+
+const SnowballStemmerName = "stemmer_no_snowball"
+
+type NorwegianStemmerFilter struct {
+}
+
+func NewNorwegianStemmerFilter() *NorwegianStemmerFilter {
+	return &NorwegianStemmerFilter{}
+}
+
+func (s *NorwegianStemmerFilter) Filter(input analysis.TokenStream) analysis.TokenStream {
+	for _, token := range input {
+		env := snowballstem.NewEnv(string(token.Term))
+		norwegian.Stem(env)
+		token.Term = []byte(env.Current())
+	}
+	return input
+}
+
+func NorwegianStemmerFilterConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.TokenFilter, error) {
+	return NewNorwegianStemmerFilter(), nil
+}
+
+func init() {
+	err := registry.RegisterTokenFilter(SnowballStemmerName, NorwegianStemmerFilterConstructor)
+	if err != nil {
+		panic(err)
+	}
+}

analysis/lang/no/stop_filter_no.go

@@ -0,0 +1,36 @@
+//  Copyright (c) 2018 Couchbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 		http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package no
+
+import (
+	"github.com/blevesearch/bleve/v2/analysis"
+	"github.com/blevesearch/bleve/v2/analysis/token/stop"
+	"github.com/blevesearch/bleve/v2/registry"
+)
+
+func StopTokenFilterConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.TokenFilter, error) {
+	tokenMap, err := cache.TokenMapNamed(StopName)
+	if err != nil {
+		return nil, err
+	}
+	return stop.NewStopTokensFilter(tokenMap), nil
+}
+
+func init() {
+	err := registry.RegisterTokenFilter(StopName, StopTokenFilterConstructor)
+	if err != nil {
+		panic(err)
+	}
+}

analysis/lang/no/stop_words_no.go

@@ -0,0 +1,221 @@
+package no
+
+import (
+	"github.com/blevesearch/bleve/v2/analysis"
+	"github.com/blevesearch/bleve/v2/registry"
+)
+
+const StopName = "stop_no"
+
+// this content was obtained from:
+// lucene-4.7.2/analysis/common/src/resources/org/apache/lucene/analysis/snowball/
+// ` was changed to ' to allow for literal string
+
+var NorwegianStopWords = []byte(` | From svn.tartarus.org/snowball/trunk/website/algorithms/norwegian/stop.txt
+ | This file is distributed under the BSD License.
+ | See http://snowball.tartarus.org/license.php
+ | Also see http://www.opensource.org/licenses/bsd-license.html
+ |  - Encoding was converted to UTF-8.
+ |  - This notice was added.
+ |
+ | NOTE: To use this file with StopFilterFactory, you must specify format="snowball"
+
+ | A Norwegian stop word list. Comments begin with vertical bar. Each stop
+ | word is at the start of a line.
+
+ | This stop word list is for the dominant bokmål dialect. Words unique
+ | to nynorsk are marked *.
+
+ | Revised by Jan Bruusgaard <Jan.Bruusgaard@ssb.no>, Jan 2005
+
+og             | and
+i              | in
+jeg            | I
+det            | it/this/that
+at             | to (w. inf.)
+en             | a/an
+et             | a/an
+den            | it/this/that
+til            | to
+er             | is/am/are
+som            | who/that
+på             | on
+de             | they / you(formal)
+med            | with
+han            | he
+av             | of
+ikke           | not
+ikkje          | not *
+der            | there
+så             | so
+var            | was/were
+meg            | me
+seg            | you
+men            | but
+ett            | one
+har            | have
+om             | about
+vi             | we
+min            | my
+mitt           | my
+ha             | have
+hadde          | had
+hun            | she
+nå             | now
+over           | over
+da             | when/as
+ved            | by/know
+fra            | from
+du             | you
+ut             | out
+sin            | your
+dem            | them
+oss            | us
+opp            | up
+man            | you/one
+kan            | can
+hans           | his
+hvor           | where
+eller          | or
+hva            | what
+skal           | shall/must
+selv           | self (reflective)
+sjøl           | self (reflective)
+her            | here
+alle           | all
+vil            | will
+bli            | become
+ble            | became
+blei           | became *
+blitt          | have become
+kunne          | could
+inn            | in
+når            | when
+være           | be
+kom            | come
+noen           | some
+noe            | some
+ville          | would
+dere           | you
+som            | who/which/that
+deres          | their/theirs
+kun            | only/just
+ja             | yes
+etter          | after
+ned            | down
+skulle         | should
+denne          | this
+for            | for/because
+deg            | you
+si             | hers/his
+sine           | hers/his
+sitt           | hers/his
+mot            | against
+å              | to
+meget          | much
+hvorfor        | why
+dette          | this
+disse          | these/those
+uten           | without
+hvordan        | how
+ingen          | none
+din            | your
+ditt           | your
+blir           | become
+samme          | same
+hvilken        | which
+hvilke         | which (plural)
+sånn           | such a
+inni           | inside/within
+mellom         | between
+vår            | our
+hver           | each
+hvem           | who
+vors           | us/ours
+hvis           | whose
+både           | both
+bare           | only/just
+enn            | than
+fordi          | as/because
+før            | before
+mange          | many
+også           | also
+slik           | just
+vært           | been
+være           | to be
+båe            | both *
+begge          | both
+siden          | since
+dykk           | your *
+dykkar         | yours *
+dei            | they *
+deira          | them *
+deires         | theirs *
+deim           | them *
+di             | your (fem.) *
+då             | as/when *
+eg             | I *
+ein            | a/an *
+eit            | a/an *
+eitt           | a/an *
+elles          | or *
+honom          | he *
+hjå            | at *
+ho             | she *
+hoe            | she *
+henne          | her
+hennar         | her/hers
+hennes         | hers
+hoss           | how *
+hossen         | how *
+ikkje          | not *
+ingi           | noone *
+inkje          | noone *
+korleis        | how *
+korso          | how *
+kva            | what/which *
+kvar           | where *
+kvarhelst      | where *
+kven           | who/whom *
+kvi            | why *
+kvifor         | why *
+me             | we *
+medan          | while *
+mi             | my *
+mine           | my *
+mykje          | much *
+no             | now *
+nokon          | some (masc./neut.) *
+noka           | some (fem.) *
+nokor          | some *
+noko           | some *
+nokre          | some *
+si             | his/hers *
+sia            | since *
+sidan          | since *
+so             | so *
+somt           | some *
+somme          | some *
+um             | about*
+upp            | up *
+vere           | be *
+vore           | was *
+verte          | become *
+vort           | become *
+varte          | became *
+vart           | became *
+
+`)
+
+func TokenMapConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.TokenMap, error) {
+	rv := analysis.NewTokenMap()
+	err := rv.LoadBytes(NorwegianStopWords)
+	return rv, err
+}
+
+func init() {
+	err := registry.RegisterTokenMap(StopName, TokenMapConstructor)
+	if err != nil {
+		panic(err)
+	}
+}