pkg/buffer/reader.go

// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements.  See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 buffer

import (
	"bytes"
	"io"
	"strings"
)

func ReadLine(buf *bytes.Buffer, cb func(line string) bool) error {
	for {
		s, err := buf.ReadString('\n')
		if err != nil && err != io.EOF {
			return err
		}
		if !cb(strings.TrimSpace(s)) {
			break
		}
		if err != nil {
			break
		}
	}
	return nil
}