init

cmd/namecount/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"tallin/internal/counter"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintf(os.Stderr, "usage: %s <filename>\n", os.Args[0])
+		os.Exit(1)
+	}
+
+	file, err := os.Open(os.Args[1])
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "open file: %v\n", err)
+		os.Exit(1)
+	}
+	defer file.Close()
+
+	counts, err := counter.Count(file)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "read file: %v\n", err)
+		os.Exit(1)
+	}
+
+	for _, result := range counter.Sorted(counts) {
+		fmt.Printf("%s:%d\n", result.Name, result.Count)
+	}
+}