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vendor/github.com/blevesearch/bleve/analysis/language/nl/analyzer_nl.go

@@ -0,0 +1,55 @@
+//  Copyright (c) 2014 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.
+
+// +build libstemmer full
+// +build icu full
+
+package nl
+
+import (
+	"github.com/blevesearch/bleve/analysis"
+	"github.com/blevesearch/bleve/registry"
+
+	"github.com/blevesearch/bleve/analysis/token_filters/lower_case_filter"
+	"github.com/blevesearch/bleve/analysis/tokenizers/icu"
+)
+
+const AnalyzerName = "nl"
+
+func AnalyzerConstructor(config map[string]interface{}, cache *registry.Cache) (*analysis.Analyzer, error) {
+	icuTokenizer, err := cache.TokenizerNamed(icu.Name)
+	if err != nil {
+		return nil, err
+	}
+	toLowerFilter, err := cache.TokenFilterNamed(lower_case_filter.Name)
+	if err != nil {
+		return nil, err
+	}
+	stopNlFilter, err := cache.TokenFilterNamed(StopName)
+	if err != nil {
+		return nil, err
+	}
+	stemmerNlFilter, err := cache.TokenFilterNamed(StemmerName)
+	if err != nil {
+		return nil, err
+	}
+	rv := analysis.Analyzer{
+		Tokenizer: icuTokenizer,
+		TokenFilters: []analysis.TokenFilter{
+			toLowerFilter,
+			stopNlFilter,
+			stemmerNlFilter,
+		},
+	}
+	return &rv, nil
+}
+
+func init() {
+	registry.RegisterAnalyzer(AnalyzerName, AnalyzerConstructor)
+}

vendor/github.com/blevesearch/bleve/analysis/language/nl/analyzer_nl_test.go

@@ -0,0 +1,68 @@
+//  Copyright (c) 2014 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.
+
+// +build libstemmer full
+// +build icu full
+
+package nl
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/blevesearch/bleve/analysis"
+	"github.com/blevesearch/bleve/registry"
+)
+
+func TestDutchAnalyzer(t *testing.T) {
+	tests := []struct {
+		input  []byte
+		output analysis.TokenStream
+	}{
+		// stemming
+		{
+			input: []byte("lichamelijk"),
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("licham"),
+				},
+			},
+		},
+		{
+			input: []byte("lichamelijke"),
+			output: analysis.TokenStream{
+				&analysis.Token{
+					Term: []byte("licham"),
+				},
+			},
+		},
+		// stop word
+		{
+			input:  []byte("van"),
+			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)
+			}
+		}
+	}
+}

vendor/github.com/blevesearch/bleve/analysis/language/nl/stemmer_nl.go

@@ -0,0 +1,28 @@
+//  Copyright (c) 2014 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.
+
+// +build libstemmer full
+
+package nl
+
+import (
+	"github.com/blevesearch/bleve/analysis"
+	"github.com/blevesearch/bleve/analysis/token_filters/stemmer_filter"
+	"github.com/blevesearch/bleve/registry"
+)
+
+const StemmerName = "stemmer_nl"
+
+func StemmerFilterConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.TokenFilter, error) {
+	return stemmer_filter.NewStemmerFilter("nl")
+}
+
+func init() {
+	registry.RegisterTokenFilter(StemmerName, StemmerFilterConstructor)
+}

vendor/github.com/blevesearch/bleve/analysis/language/nl/stop_filter_nl.go

@@ -0,0 +1,28 @@
+//  Copyright (c) 2014 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 nl
+
+import (
+	"github.com/blevesearch/bleve/analysis"
+	"github.com/blevesearch/bleve/analysis/token_filters/stop_tokens_filter"
+	"github.com/blevesearch/bleve/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_tokens_filter.NewStopTokensFilter(tokenMap), nil
+}
+
+func init() {
+	registry.RegisterTokenFilter(StopName, StopTokenFilterConstructor)
+}

vendor/github.com/blevesearch/bleve/analysis/language/nl/stop_words_nl.go

@@ -0,0 +1,143 @@
+package nl
+
+import (
+	"github.com/blevesearch/bleve/analysis"
+	"github.com/blevesearch/bleve/registry"
+)
+
+const StopName = "stop_nl"
+
+// 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 DutchStopWords = []byte(` | From svn.tartarus.org/snowball/trunk/website/algorithms/dutch/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 Dutch stop word list. Comments begin with vertical bar. Each stop
+ | word is at the start of a line.
+
+ | This is a ranked list (commonest to rarest) of stopwords derived from
+ | a large sample of Dutch text.
+
+ | Dutch stop words frequently exhibit homonym clashes. These are indicated
+ | clearly below.
+
+de             |  the
+en             |  and
+van            |  of, from
+ik             |  I, the ego
+te             |  (1) chez, at etc, (2) to, (3) too
+dat            |  that, which
+die            |  that, those, who, which
+in             |  in, inside
+een            |  a, an, one
+hij            |  he
+het            |  the, it
+niet           |  not, nothing, naught
+zijn           |  (1) to be, being, (2) his, one's, its
+is             |  is
+was            |  (1) was, past tense of all persons sing. of 'zijn' (to be) (2) wax, (3) the washing, (4) rise of river
+op             |  on, upon, at, in, up, used up
+aan            |  on, upon, to (as dative)
+met            |  with, by
+als            |  like, such as, when
+voor           |  (1) before, in front of, (2) furrow
+had            |  had, past tense all persons sing. of 'hebben' (have)
+er             |  there
+maar           |  but, only
+om             |  round, about, for etc
+hem            |  him
+dan            |  then
+zou            |  should/would, past tense all persons sing. of 'zullen'
+of             |  or, whether, if
+wat            |  what, something, anything
+mijn           |  possessive and noun 'mine'
+men            |  people, 'one'
+dit            |  this
+zo             |  so, thus, in this way
+door           |  through by
+over           |  over, across
+ze             |  she, her, they, them
+zich           |  oneself
+bij            |  (1) a bee, (2) by, near, at
+ook            |  also, too
+tot            |  till, until
+je             |  you
+mij            |  me
+uit            |  out of, from
+der            |  Old Dutch form of 'van der' still found in surnames
+daar           |  (1) there, (2) because
+haar           |  (1) her, their, them, (2) hair
+naar           |  (1) unpleasant, unwell etc, (2) towards, (3) as
+heb            |  present first person sing. of 'to have'
+hoe            |  how, why
+heeft          |  present third person sing. of 'to have'
+hebben         |  'to have' and various parts thereof
+deze           |  this
+u              |  you
+want           |  (1) for, (2) mitten, (3) rigging
+nog            |  yet, still
+zal            |  'shall', first and third person sing. of verb 'zullen' (will)
+me             |  me
+zij            |  she, they
+nu             |  now
+ge             |  'thou', still used in Belgium and south Netherlands
+geen           |  none
+omdat          |  because
+iets           |  something, somewhat
+worden         |  to become, grow, get
+toch           |  yet, still
+al             |  all, every, each
+waren          |  (1) 'were' (2) to wander, (3) wares, (3)
+veel           |  much, many
+meer           |  (1) more, (2) lake
+doen           |  to do, to make
+toen           |  then, when
+moet           |  noun 'spot/mote' and present form of 'to must'
+ben            |  (1) am, (2) 'are' in interrogative second person singular of 'to be'
+zonder         |  without
+kan            |  noun 'can' and present form of 'to be able'
+hun            |  their, them
+dus            |  so, consequently
+alles          |  all, everything, anything
+onder          |  under, beneath
+ja             |  yes, of course
+eens           |  once, one day
+hier           |  here
+wie            |  who
+werd           |  imperfect third person sing. of 'become'
+altijd         |  always
+doch           |  yet, but etc
+wordt          |  present third person sing. of 'become'
+wezen          |  (1) to be, (2) 'been' as in 'been fishing', (3) orphans
+kunnen         |  to be able
+ons            |  us/our
+zelf           |  self
+tegen          |  against, towards, at
+na             |  after, near
+reeds          |  already
+wil            |  (1) present tense of 'want', (2) 'will', noun, (3) fender
+kon            |  could; past tense of 'to be able'
+niets          |  nothing
+uw             |  your
+iemand         |  somebody
+geweest        |  been; past participle of 'be'
+andere         |  other
+`)
+
+func TokenMapConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.TokenMap, error) {
+	rv := analysis.NewTokenMap()
+	err := rv.LoadBytes(DutchStopWords)
+	return rv, err
+}
+
+func init() {
+	registry.RegisterTokenMap(StopName, TokenMapConstructor)
+}