initial

README.md

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+# b2e
+
+simple tool to translate bash scripts to embedded go commands
+
+## usage
+
+b2e -s="source path" -d="destination file"
+
+default values are
+
+s = ".\"
+d = ".\bash.go"
+
+## licence
+
+MIT
+
+## Author
+
+Darko Luketic

main.go

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+package main
+
+import (
+	"bufio"
+	"flag"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+var (
+	srcPath  = flag.String("s", "./", "source path")
+	destPath = flag.String("d", "./bash.go", "output file")
+	out      = "package bash\n\n" + "import (\n\t" + `"os"` + "\n\t" + `"os/exec"` + "\n" + ")" + "\n\n"
+)
+
+func main() {
+	flag.Parse()
+	if e := filepath.Walk(*srcPath, walkfn); e != nil {
+		log.Fatalln(e.Error())
+	}
+	if e := ioutil.WriteFile(*destPath, []byte(out), 0664); e != nil {
+		log.Fatalln(e.Error())
+	}
+
+}
+
+func walkfn(path string, info os.FileInfo, err error) error {
+	if strings.Contains(info.Name(), ".") {
+		return nil
+	}
+	fp, e := os.Open(path)
+	if e != nil {
+		return e
+	}
+	defer fp.Close()
+	out += `func ` + strings.Title(info.Name()) + `Command() error {` + "\n"
+	scanner := bufio.NewScanner(fp)
+	first := true
+	for scanner.Scan() {
+		if strings.HasPrefix(scanner.Text(), "#") {
+			continue
+		}
+		if scanner.Text() == "" {
+			continue
+		}
+		if first {
+			out += "\t" + "cmd := exec.Command("
+		} else {
+			out += "\t" + "cmd = exec.Command("
+		}
+
+		splt := strings.Split(scanner.Text(), " ")
+		for c, t := range splt {
+			if c != len(splt)-1 {
+				out += `"` + t + `", `
+			} else {
+				out += `"` + t + `"`
+			}
+
+		}
+		out += ")\n"
+		out += "\t" + `cmd.Stdout = os.Stdout` + "\n"
+		out += "\t" + `cmd.Stderr = os.Stderr` + "\n"
+		out += "\t" + `if e := cmd.Start(); e != nil {` + "\n"
+		out += "\t" + "\t" + "return e" + "\n"
+		out += "\t" + "}" + "\n"
+		out += "\t" + `if e := cmd.Wait(); e != nil {` + "\n"
+		out += "\t" + "\t" + "return e" + "\n"
+		out += "\t" + "}" + "\n\n"
+
+		first = false
+	}
+
+	if e := scanner.Err(); e != nil {
+		return e
+	}
+	out += "\t" + "return nil" + "\n"
+	out += "}\n\n"
+	return nil
+}