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tokens.go
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tokens.go
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/*
* Copyright (C) 2017 Dgraph Labs, Inc. and Contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package tok
import (
"github.com/dgraph-io/dgraph/x"
)
// Might want to allow user to replace this.
var termTokenizer TermTokenizer
var fullTextTokenizer FullTextTokenizer
func GetTokens(funcArgs []string) ([]string, error) {
return tokenize(funcArgs, termTokenizer)
}
func GetTextTokens(funcArgs []string, lang string) ([]string, error) {
t, found := GetTokenizer("fulltext" + lang)
if found {
return tokenize(funcArgs, t)
}
return nil, x.Errorf("Tokenizer not found for %s", "fulltext"+lang)
}
func tokenize(funcArgs []string, tokenizer Tokenizer) ([]string, error) {
if len(funcArgs) != 1 {
return nil, x.Errorf("Function requires 1 arguments, but got %d",
len(funcArgs))
}
return BuildTokens(funcArgs[0], tokenizer)
}