initial commit

cmd/demo/demo.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"fmt"
+	"time"
+	"git.haelnorr.com/h/timefmt"
+)
+
+func main() {
+	fmt.Println("=== timefmt Demo ===\n")
+
+	// 1. Building a custom format
+	fmt.Println("1. Building a custom format:")
+	format := timefmt.NewBuilder().
+		Year4().Dash().
+		MonthNumeric2().Dash().
+		DayNumeric2().Space().
+		Hour24().Colon().
+		Minute().Colon().
+		Second().
+		Build()
+
+	fmt.Printf("   Go format:   %s\n", format.GoFormat())
+	fmt.Printf("   LDML:        %s\n", format.LDML())
+	fmt.Printf("   Description: %s\n\n", format.Description())
+
+	// 2. Using pre-built formats
+	fmt.Println("2. Pre-built formats:")
+	now := time.Now()
+	fmt.Printf("   ISO8601:  %s\n", timefmt.ISO8601.Format(now))
+	fmt.Printf("   DateTime: %s\n", timefmt.DateTime.Format(now))
+	fmt.Printf("   DateUS:   %s\n", timefmt.DateUS.Format(now))
+	fmt.Printf("   Kitchen:  %s\n\n", timefmt.Kitchen.Format(now))
+
+	// 3. Parsing existing Go formats
+	fmt.Println("3. Parsing an existing Go format:")
+	parsed, _ := timefmt.ParseGoFormat("02/01/2006")
+	fmt.Printf("   Input:       02/01/2006\n")
+	fmt.Printf("   LDML:        %s\n", parsed.LDML())
+	fmt.Printf("   Description: %s\n\n", parsed.Description())
+
+	// 4. Complex format example
+	fmt.Println("4. Complex format with custom text:")
+	complex := timefmt.NewBuilder().
+		WeekdayFull().Comma().
+		MonthFull().Space().
+		DayNumeric().Comma().
+		Year4().Space().
+		Literal("at").Space().
+		Hour12().Colon().
+		Minute().Space().
+		AMPM().
+		Build()
+
+	fmt.Printf("   Formatted: %s\n", complex.Format(now))
+	fmt.Printf("   LDML:      %s\n", complex.LDML())
+}