Main.

main.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+)
+
+// fatal print out error as a shell comment and exit on error.
+func fatal(err error) {
+	fmt.Fprintf(os.Stderr, fmt.Sprintf("# [ERROR] %v\n", err))
+	os.Exit(1)
+}
+
+// commandLineParser handle command line flags, display help message.
+func commandLineParser(config *Config) {
+	flag.Usage = func() {
+		fmt.Printf(`## path-helper
+
+Helper command-line application to compose "PATH" expression based in a "paths.d"
+directory, respecting order of files and adding toggles to skip entries.
+
+To export new "PATH" to your shell instance, run "eval" against "path-helper"
+output. Examples below.
+
+Usage:
+  $ path-helper [-h|--help|flags]
+
+Examples:
+  $ path-helper -v
+  $ path-helper -v -s=false -d=false
+
+Shell-Export:
+  $ eval "$(path-helper -s=false -d=false)"
+  $ echo $PATH
+
+Command-Line Options:
+`)
+		flag.PrintDefaults()
+	}
+
+	flag.StringVar(&config.BaseDir, "b", "/etc/paths.d", "Base directory")
+	flag.BoolVar(&config.SkipNotFound, "d", true, "Skip not found directories")
+	flag.BoolVar(&config.SkipDuplicates, "s", true, "Skip duplicated entries")
+	flag.BoolVar(&config.Verbose, "v", false, "Verbose")
+
+	flag.Parse()
+}
+
+func main() {
+	config := &Config{}
+	commandLineParser(config)
+
+	p := NewPathHelper(config)
+	expr, err := p.RenderExpression()
+	if err != nil {
+		fatal(err)
+	}
+	fmt.Println(expr)
+}