mirror of
https://github.com/gohugoio/hugo.git
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100 lines
2.4 KiB
Go
100 lines
2.4 KiB
Go
// Copyright 2024 The Hugo Authors. All rights reserved.
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// Some functions in this file (see comments) is based on the Go source code,
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// copyright The Go Authors and governed by a BSD-style license.
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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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// 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 loggers
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import (
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"fmt"
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"io"
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"regexp"
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"strings"
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"sync"
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"github.com/bep/logg"
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)
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// newNoAnsiEscapeHandler creates a new noAnsiEscapeHandler
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func newNoAnsiEscapeHandler(outWriter, errWriter io.Writer, noLevelPrefix bool, predicate func(*logg.Entry) bool) *noAnsiEscapeHandler {
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if predicate == nil {
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predicate = func(e *logg.Entry) bool { return true }
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}
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return &noAnsiEscapeHandler{
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noLevelPrefix: noLevelPrefix,
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outWriter: outWriter,
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errWriter: errWriter,
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predicate: predicate,
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}
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}
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type noAnsiEscapeHandler struct {
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mu sync.Mutex
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outWriter io.Writer // Defaults to os.Stdout.
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errWriter io.Writer // Defaults to os.Stderr.
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predicate func(*logg.Entry) bool
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noLevelPrefix bool
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}
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func (h *noAnsiEscapeHandler) HandleLog(e *logg.Entry) error {
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if !h.predicate(e) {
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return nil
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}
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h.mu.Lock()
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defer h.mu.Unlock()
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var w io.Writer
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if e.Level > logg.LevelInfo {
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w = h.errWriter
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} else {
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w = h.outWriter
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}
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var prefix string
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for _, field := range e.Fields {
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if field.Name == FieldNameCmd {
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prefix = fmt.Sprint(field.Value)
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break
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}
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}
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if prefix != "" {
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prefix = prefix + ": "
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}
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msg := stripANSI(e.Message)
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if h.noLevelPrefix {
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fmt.Fprintf(w, "%s%s", prefix, msg)
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} else {
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fmt.Fprintf(w, "%s %s%s", levelString[e.Level], prefix, msg)
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}
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for _, field := range e.Fields {
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if strings.HasPrefix(field.Name, reservedFieldNamePrefix) {
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continue
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}
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fmt.Fprintf(w, " %s %v", field.Name, field.Value)
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}
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fmt.Fprintln(w)
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return nil
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}
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var ansiRe = regexp.MustCompile(`\x1b\[[0-9;]*m`)
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// stripANSI removes ANSI escape codes from s.
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func stripANSI(s string) string {
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return ansiRe.ReplaceAllString(s, "")
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}
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