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pkg/utils/writer.go
62 строки
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Nathan Baulch
Fix typos
11 сен 2024, 12:21
11 сен 2024, 12:21
524a97e
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/* Copyright 2020 Docker Compose CLI authors 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 utils import ( "bytes" "io" ) // GetWriter creates an io.Writer that will actually split by line and format by LogConsumer func GetWriter(consumer func(string)) io.WriteCloser { return &splitWriter{ buffer: bytes.Buffer{}, consumer: consumer, } } type splitWriter struct { buffer bytes.Buffer consumer func(string) } // Write implements io.Writer. joins all input, splits on the separator and yields each chunk func (s *splitWriter) Write(b []byte) (int, error) { n, err := s.buffer.Write(b) if err != nil { return n, err } for { b = s.buffer.Bytes() index := bytes.Index(b, []byte{'\n'}) if index < 0 { break } line := s.buffer.Next(index + 1) s.consumer(string(line[:len(line)-1])) } return n, nil } func (s *splitWriter) Close() error { b := s.buffer.Bytes() if len(b) == 0 { return nil } s.consumer(string(b)) return nil }