77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package analysis
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import (
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"bufio"
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"bytes"
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"io"
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"io/ioutil"
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"strings"
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)
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type TokenMap map[string]bool
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func NewTokenMap() TokenMap {
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return make(TokenMap, 0)
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}
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// LoadFile reads in a list of tokens from a text file,
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// one per line.
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// Comments are supported using `#` or `|`
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func (t TokenMap) LoadFile(filename string) error {
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data, err := ioutil.ReadFile(filename)
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if err != nil {
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return err
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}
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return t.LoadBytes(data)
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}
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// LoadBytes reads in a list of tokens from memory,
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// one per line.
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// Comments are supported using `#` or `|`
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func (t TokenMap) LoadBytes(data []byte) error {
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bytesReader := bytes.NewReader(data)
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bufioReader := bufio.NewReader(bytesReader)
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line, err := bufioReader.ReadString('\n')
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for err == nil {
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t.LoadLine(line)
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line, err = bufioReader.ReadString('\n')
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}
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// if the err was EOF we still need to process the last value
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if err == io.EOF {
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t.LoadLine(line)
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return nil
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}
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return err
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}
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func (t TokenMap) LoadLine(line string) {
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// find the start of a comment, if any
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startComment := strings.IndexAny(line, "#|")
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if startComment >= 0 {
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line = line[:startComment]
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}
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tokens := strings.Fields(line)
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for _, token := range tokens {
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t.AddToken(token)
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}
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}
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func (t TokenMap) AddToken(token string) {
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t[token] = true
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}
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