Added TeeFile helper to log to stdout and file

README.md

@@ -49,7 +49,7 @@ func main() {
 ```
 The MIT License (MIT)
 
-Copyright (c) 2017-18 Noah Petherbridge
+Copyright (c) 2017-24 Noah Petherbridge
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

config.go

@@ -18,7 +18,7 @@ type Config struct {
 	// Where to write the log messages to? If not defined with a custom io.Writer,
 	// the default goes to standard output for Debug and Info messages and
 	// standard error for warnings, errors, and fatal messages.
-	Writer *io.Writer
+	Writer io.Writer
 
 	// How do you want to format your log lines? This should be a Go text format
 	// string, with the following variable placeholders:

go.mod

@@ -0,0 +1,13 @@
+module git.kirsle.net/go/log
+
+go 1.22.0
+
+require (
+	github.com/tomnomnom/xtermcolor v0.0.0-20160428124646-b78803f00a7e
+	golang.org/x/crypto v0.22.0
+)
+
+require (
+	golang.org/x/sys v0.19.0 // indirect
+	golang.org/x/term v0.19.0 // indirect
+)

go.sum

@@ -0,0 +1,8 @@
+github.com/tomnomnom/xtermcolor v0.0.0-20160428124646-b78803f00a7e h1:Ee+VZw13r9NTOMnwTPs6O5KZ0MJU54hsxu9FpZ4pQ10=
+github.com/tomnomnom/xtermcolor v0.0.0-20160428124646-b78803f00a7e/go.mod h1:fSIW/szJHsRts/4U8wlMPhs+YqJC+7NYR+Qqb1uJVpA=
+golang.org/x/crypto v0.22.0 h1:g1v0xeRhjcugydODzvb3mEM9SQ0HGp9s/nh3COQ/C30=
+golang.org/x/crypto v0.22.0/go.mod h1:vr6Su+7cTlO45qkww3VDJlzDn0ctJvRgYbC2NvXHt+M=
+golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
+golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.19.0 h1:+ThwsDv+tYfnJFhF4L8jITxu1tdTWRTZpdsWgEgjL6Q=
+golang.org/x/term v0.19.0/go.mod h1:2CuTdWZ7KHSQwUzKva0cbMg6q2DMI3Mmxp+gKJbskEk=

levels.go

@@ -32,8 +32,7 @@ func (l *Logger) emit(level logLevel, tmpl string, args ...interface{}) {
 
 	// If we have a log writer, send it there.
 	if l.Config.Writer != nil {
-		// TODO
+		fmt.Fprintln(l.Config.Writer, message)
-		// l.Config.Writer.Write(message)
 	} else {
 		// No writer given so we default to standard out/error.
 		if level <= InfoLevel {

tee.go

@@ -0,0 +1,35 @@
+package log
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"regexp"
+)
+
+// FileTee can write logs to a file on disk as well as standard output.
+type FileTee struct {
+	fh io.Writer
+}
+
+var RegexpANSIColorCode = regexp.MustCompile(`\x1B\[[0-9;]+m`)
+
+func NewFileTee(filename string) (*FileTee, error) {
+	fh, err := os.Create(filename)
+	if err != nil {
+		return nil, err
+	}
+
+	return &FileTee{
+		fh: fh,
+	}, nil
+}
+
+func (ft *FileTee) Write(p []byte) (n int, err error) {
+	var (
+		text    = string(p)
+		noColor = RegexpANSIColorCode.ReplaceAllString(text, "")
+	)
+	fmt.Fprintf(os.Stdout, string(p))
+	return fmt.Fprintf(ft.fh, noColor)
+}

terminal_js.go

@@ -1,4 +1,6 @@
+//go:build js && wasm
 // +build js,wasm
+
 package log
 
 // WASM builds don't have a terminal to query so interactive=false for plain