woodpecker/pipeline/log/utils.go

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// Copyright 2024 Woodpecker 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 log
import (
"bufio"
"errors"
"io"
)
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func writeChunks(dst io.Writer, data []byte, size int) error {
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if len(data) <= size {
_, err := dst.Write(data)
return err
}
for len(data) > size {
if _, err := dst.Write(data[:size]); err != nil {
return err
}
data = data[size:]
}
if len(data) > 0 {
_, err := dst.Write(data)
return err
}
return nil
}
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func CopyLineByLine(dst io.Writer, src io.Reader, maxSize int) error {
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r := bufio.NewReader(src)
for {
// TODO: read til newline or maxSize directly
line, err := r.ReadBytes('\n')
if errors.Is(err, io.EOF) {
return writeChunks(dst, line, maxSize)
} else if err != nil {
return err
}
err = writeChunks(dst, line, maxSize)
if err != nil {
return err
}
}
}