commit 8dde70c5553ad185f0a2aaf98550cf5beb4ebf47 Author: Martin Riedl Date: Wed Jan 3 21:25:52 2024 +0100 initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..2608ec2 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +.DS_Store +.vscode \ No newline at end of file diff --git a/LICENSE.txt b/LICENSE.txt new file mode 100644 index 0000000..d9a10c0 --- /dev/null +++ b/LICENSE.txt @@ -0,0 +1,176 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. 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Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS diff --git a/README.md b/README.md new file mode 100644 index 0000000..c2a171a --- /dev/null +++ b/README.md @@ -0,0 +1,16 @@ +# License +``` +Copyright 2023 Martin Riedl + +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. +``` diff --git a/entry.go b/entry.go new file mode 100644 index 0000000..9b316a5 --- /dev/null +++ b/entry.go @@ -0,0 +1,83 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +import ( + "fmt" + "time" +) + +type Entry struct { + Logger *Logger + Content []Content + Message string + Level Level + Time time.Time +} + +type Content struct { + Key string `json:"key"` + Value any `json:"value"` +} + +func NewEntry(logger *Logger) *Entry { + return &Entry{ + Logger: logger, + Content: make([]Content, 0), + } +} + +func (entry *Entry) With(key string, value any) *Entry { + entry.Content = append(entry.Content, Content{ + Key: key, + Value: value, + }) + return entry +} + +func (entry *Entry) WithContent(content []Content) *Entry { + entry.Content = append(entry.Content, content...) + return entry +} + +func (entry *Entry) Log(level Level, args ...any) { + entry.Message = fmt.Sprint(args...) + entry.Level = level + entry.Logger.LogEntry(entry) +} + +func (entry *Entry) Fatal(args ...any) { + entry.Log(LevelFatal, args...) +} + +func (entry *Entry) Error(args ...any) { + entry.Log(LevelError, args...) +} + +func (entry *Entry) Warning(args ...any) { + entry.Log(LevelWarning, args...) +} + +func (entry *Entry) Info(args ...any) { + entry.Log(LevelInfo, args...) +} + +func (entry *Entry) Debug(args ...any) { + entry.Log(LevelDebug, args...) +} + +func (entry *Entry) Trace(args ...any) { + entry.Log(LevelTrace, args...) +} diff --git a/formatter.go b/formatter.go new file mode 100644 index 0000000..c7788cf --- /dev/null +++ b/formatter.go @@ -0,0 +1,21 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +type Formatter interface { + Begin(*Entry) + Process(*Entry) + End(*Entry) []byte +} diff --git a/formatter_json.go b/formatter_json.go new file mode 100644 index 0000000..7d0be05 --- /dev/null +++ b/formatter_json.go @@ -0,0 +1,71 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +import ( + "encoding/json" + "log" + "time" +) + +type FormatterJSON struct { + FlatContent bool + TimeFormat string + data map[string]interface{} +} + +func NewFormatterJSON() *FormatterJSON { + return &FormatterJSON{ + TimeFormat: time.RFC3339, + } +} + +func (formatter *FormatterJSON) Begin(entry *Entry) { + // reset formatter + formatter.data = make(map[string]interface{}) + + // add timestamp + formatter.data["time"] = entry.Time.Format(formatter.TimeFormat) + + // add log level + formatter.data["level"] = entry.Level.String() +} + +func (formatter *FormatterJSON) Process(entry *Entry) { + // add message + formatter.data["message"] = entry.Message + + // add additional fields + if formatter.FlatContent { + for _, content := range entry.Content { + formatter.data[content.Key] = content.Value + } + } else { + formatter.data["fields"] = entry.Content + } +} + +func (formatter *FormatterJSON) End(entry *Entry) []byte { + // build JSON + data, err := json.Marshal(formatter.data) + if err != nil { + // marshal should never fail + log.Println(err) + return []byte{} + } + + // return json data + return data +} diff --git a/formatter_json_test.go b/formatter_json_test.go new file mode 100644 index 0000000..8b71bb3 --- /dev/null +++ b/formatter_json_test.go @@ -0,0 +1,62 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +import "testing" + +func TestFormatterJson(t *testing.T) { + // prepare test data + entry := &Entry{ + Message: "Some Text", + Content: []Content{ + {Key: "k1", Value: "v1"}, + {Key: "k2", Value: "v2"}, + }, + Level: LevelInfo, + } + result := `{"fields":[{"key":"k1","value":"v1"},{"key":"k2","value":"v2"}],"level":"INFO","message":"Some Text","time":"0001-01-01T00:00:00Z"}` + + // execute formatter + formatter := NewFormatterJSON() + formatter.Begin(entry) + formatter.Process(entry) + data := formatter.End(entry) + if string(data) != result { + t.Error("received invalid JSON data", string(data)) + } +} + +func TestFormatterJsonFlat(t *testing.T) { + // prepare test data + entry := &Entry{ + Message: "Some Text", + Content: []Content{ + {Key: "k1", Value: "v1"}, + {Key: "k2", Value: "v2"}, + }, + Level: LevelInfo, + } + result := `{"k1":"v1","k2":"v2","level":"INFO","message":"Some Text","time":"0001-01-01T00:00:00Z"}` + + // execute formatter + formatter := NewFormatterJSON() + formatter.FlatContent = true + formatter.Begin(entry) + formatter.Process(entry) + data := formatter.End(entry) + if string(data) != result { + t.Error("received invalid JSON data", string(data)) + } +} diff --git a/formatter_keyvalue.go b/formatter_keyvalue.go new file mode 100644 index 0000000..bae5084 --- /dev/null +++ b/formatter_keyvalue.go @@ -0,0 +1,80 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +import ( + "fmt" + "strings" + "time" +) + +type FormatterKeyValue struct { + TimeFormat string + builder strings.Builder + isFirstKVWritten bool +} + +func NewFormatterKeyValue() *FormatterKeyValue { + return &FormatterKeyValue{ + TimeFormat: time.RFC3339, + } +} + +func (formatter *FormatterKeyValue) Begin(entry *Entry) { + // reset builder + formatter.builder.Reset() + + // add timestamp + formatter.addKV("time", entry.Time.Format(formatter.TimeFormat)) + + // add loglevel + formatter.addKV("level", entry.Level.String()) +} + +func (formatter *FormatterKeyValue) Process(entry *Entry) { + // add message + formatter.addKV("message", entry.Message) + + // add additional fields + for _, content := range entry.Content { + formatter.addKV(content.Key, content.Value) + } +} + +func (formatter *FormatterKeyValue) addKV(key string, value any) { + // convert any to string + val := fmt.Sprintf("%v", value) + + // check, if value should be escaped + if strings.ContainsAny(val, " \t\n\r=") { + val = fmt.Sprintf("%q", val) + } + + // add space, if required + if formatter.isFirstKVWritten { + formatter.builder.WriteString(" ") + } + formatter.isFirstKVWritten = true + + // add field + formatter.builder.WriteString(key) + formatter.builder.WriteString("=") + formatter.builder.WriteString(val) +} + +func (formatter *FormatterKeyValue) End(entry *Entry) []byte { + // send data + return []byte(formatter.builder.String()) +} diff --git a/formatter_keyvalue_test.go b/formatter_keyvalue_test.go new file mode 100644 index 0000000..97339b4 --- /dev/null +++ b/formatter_keyvalue_test.go @@ -0,0 +1,39 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +import "testing" + +func TestFormatterKeyValue(t *testing.T) { + // prepare test data + entry := &Entry{ + Message: "Some Text", + Content: []Content{ + {Key: "k1", Value: "v1"}, + {Key: "k2", Value: "v2"}, + }, + Level: LevelInfo, + } + result := `time=0001-01-01T00:00:00Z level=INFO message="Some Text" k1=v1 k2=v2` + + // execute formatter + formatter := NewFormatterKeyValue() + formatter.Begin(entry) + formatter.Process(entry) + data := formatter.End(entry) + if string(data) != result { + t.Error("received invalid KV data", string(data)) + } +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..adadcf7 --- /dev/null +++ b/go.mod @@ -0,0 +1,3 @@ +module gitlab.com/martinr92/golog + +go 1.20 diff --git a/level.go b/level.go new file mode 100644 index 0000000..829d2bc --- /dev/null +++ b/level.go @@ -0,0 +1,45 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +type Level uint32 + +const ( + LevelFatal Level = 0 + LevelError Level = 10 + LevelWarning Level = 20 + LevelInfo Level = 30 + LevelDebug Level = 40 + LevelTrace Level = 50 +) + +func (level Level) String() string { + switch level { + case LevelFatal: + return "FATAL" + case LevelError: + return "ERROR" + case LevelWarning: + return "WARNING" + case LevelInfo: + return "INFO" + case LevelDebug: + return "DEBUG" + case LevelTrace: + return "TRACE" + default: + return "UNKNOWN" + } +} diff --git a/logger.go b/logger.go new file mode 100644 index 0000000..134e63e --- /dev/null +++ b/logger.go @@ -0,0 +1,91 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +import "time" + +var Default = NewLoggerDefault() + +type Logger struct { + Level Level + Outputs []*Output +} + +func NewLogger(level Level, outputs []*Output) *Logger { + return &Logger{ + Level: LevelInfo, + Outputs: outputs, + } +} + +func NewLoggerDefault() *Logger { + return NewLogger(LevelInfo, []*Output{NewOutputDefault()}) +} + +func (logger *Logger) LogEntry(entry *Entry) { + // check, if message should be printed + if entry.Level > logger.Level { + return + } + + // set execution time + entry.Time = time.Now() + + // run each output + for _, output := range logger.Outputs { + output.Send(entry) + } +} + +func (logger *Logger) Log(level Level, args ...any) { + entry := NewEntry(logger) + entry.Log(level, args...) +} + +func (logger *Logger) With(key string, value any) *Entry { + entry := NewEntry(logger) + entry.With(key, value) + return entry +} + +func (logger *Logger) WithContent(content []Content) *Entry { + entry := NewEntry(logger) + entry.WithContent(content) + return entry +} + +func (logger *Logger) Fatal(args ...any) { + logger.Log(LevelFatal, args...) +} + +func (logger *Logger) Error(args ...any) { + logger.Log(LevelError, args...) +} + +func (logger *Logger) Warning(args ...any) { + logger.Log(LevelWarning, args...) +} + +func (logger *Logger) Info(args ...any) { + logger.Log(LevelInfo, args...) +} + +func (logger *Logger) Debug(args ...any) { + logger.Log(LevelDebug, args...) +} + +func (logger *Logger) Trace(args ...any) { + logger.Log(LevelTrace, args...) +} diff --git a/output.go b/output.go new file mode 100644 index 0000000..62cf3e4 --- /dev/null +++ b/output.go @@ -0,0 +1,52 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +import "sync" + +type Output struct { + Formatter Formatter + formatterLock sync.Mutex + Printer Printer +} + +func NewOutput(formatter Formatter, printer Printer) *Output { + return &Output{ + Formatter: formatter, + Printer: printer, + } +} + +func NewOutputDefault() *Output { + return NewOutput(NewFormatterKeyValue(), NewPrinterStdout()) +} + +func (output *Output) Send(entry *Entry) { + output.format(entry) +} + +func (output *Output) format(entry *Entry) { + output.formatterLock.Lock() + defer output.formatterLock.Unlock() + + // run formatter + output.Formatter.Begin(entry) + + // add entry data + output.Formatter.Process(entry) + + // finalize formatter + output.Formatter.End(entry) +} diff --git a/printer.go b/printer.go new file mode 100644 index 0000000..36597c5 --- /dev/null +++ b/printer.go @@ -0,0 +1,19 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +type Printer interface { + Write(p []byte) (n int, err error) +} diff --git a/printer_stdout.go b/printer_stdout.go new file mode 100644 index 0000000..afe2496 --- /dev/null +++ b/printer_stdout.go @@ -0,0 +1,31 @@ +// Copyright 2023 Martin Riedl +// +// 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 golog + +import "os" + +type PrinterStdout struct { + out *os.File +} + +func NewPrinterStdout() *PrinterStdout { + return &PrinterStdout{ + out: os.Stdout, + } +} + +func (printer *PrinterStdout) Write(p []byte) (n int, err error) { + return printer.out.Write(p) +}