sort-cli: rework

sort-cli/config.go

@@ -0,0 +1,26 @@
+package main
+
+import "flag"
+
+type Config struct {
+	Key     int
+	Numeric bool
+	Reverse bool
+	Unique  bool
+	Sources []string
+}
+
+func (c *Config) ParseFlags() {
+	flag.IntVar(&c.Key, "k", 0, "sort via column")
+	flag.BoolVar(&c.Numeric, "n", false, "compare according to string numerical value")
+	flag.BoolVar(&c.Reverse, "r", false, "reverse the result of comparisons")
+	flag.BoolVar(&c.Unique, "u", false, "output only the first of an equal run")
+
+	flag.Parse()
+
+	c.Sources = flag.Args()
+
+	if len(c.Sources) == 0 {
+		c.Sources = []string{"-"}
+	}
+}