feat: initial public version

logx/logx.go

@@ -0,0 +1,52 @@
+// Package logx provides helper functions for logging.
+package logx
+
+import (
+	"io"
+	"log"
+	"os"
+)
+
+var logger = log.New(os.Stderr, "", log.LstdFlags)
+var Verbose = false
+
+// SetOutput sets the output destination.
+func SetOutput(w io.Writer) {
+	logger.SetOutput(w)
+}
+
+// Printf prints a formatted message.
+func Printf(format string, v ...any) {
+	logger.Printf(format, v...)
+}
+
+// Println prints a message.
+func Println(v ...any) {
+	logger.Println(v...)
+}
+
+// Log prints a message.
+func Log(message string, args ...any) {
+	if len(args) == 0 {
+		logger.Println(message)
+	} else {
+		logger.Printf(message+"\n", args...)
+	}
+}
+
+// Debug prints a message if the verbose mode is on.
+func Debug(message string, args ...any) {
+	if !Verbose {
+		return
+	}
+	Log(message, args...)
+}
+
+// Mock creates a new Memory and installs it as the logger output
+// instead of the default one. Should be used for testing purposes only.
+func Mock(path ...string) *Memory {
+	memory := NewMemory("log")
+	SetOutput(memory)
+	Verbose = true
+	return memory
+}