#EML(RFC5322) PARSER

example

	package main
    
    import (
    	"fmt"
    	"io/ioutil"
    	"os"
    	"path"
    	"strings"
    
    	"github.com/nelsonken/emlparser"
    )
    
    var (
    	Filename string
    )
    
    func init() {
    	if len(os.Args) < 2 || len(os.Args[1]) == 0 {
    		fmt.Println("you must set file")
    		os.Exit(255)
    	} else {
    		Filename = os.Args[1]
    	}
    }
    
    func main() {
    	emlraw, err := ioutil.ReadFile(Filename)
    	checkerr(err, "file "+Filename+" not found or can not be readed")
    
    	m, err := emlparser.Parse(emlraw)
    	checkerr(err, "failed parse file")
    
    	dir := Filename[0 : len(Filename)-len(path.Ext(Filename))] //crop extension
    
    	err = os.MkdirAll(dir, 0755)
    	checkerr(err, "failed create directory for save data")
    
    	for _, attachment := range m.Attachments {
    		err = ioutil.WriteFile(path.Join(dir, attachment.Filename), attachment.Data, 0755)
    		checkerr(err, "failed save attachment "+attachment.Filename)
    	}
    
    	if len(m.Html) > 0 {
    		err = ioutil.WriteFile(path.Join(dir, "body.html"), []byte(m.Html), 0755)
    		checkerr(err, "failed save html body")
    	}
    	if len(m.Text) > 0 {
    		err = ioutil.WriteFile(path.Join(dir, "body.txt"), []byte(m.Text), 0755)
    		checkerr(err, "failed save text body")
    	}
    
    	header := []string{m.Date.String(), m.Subject, m.From[0].Email(), m.To[0].Email()}
    	err = ioutil.WriteFile(path.Join(dir, "header.txt"), []byte(strings.Join(header, "\n")), 0755)
    	checkerr(err, "failed save headers")
    
    }
    
    func checkerr(err error, msg string) {
    	if err != nil {
    		fmt.Println(msg)
    		fmt.Println(err)
    		os.Exit(255)
    	}
    }