package main

import (
	"bufio"
	"encoding/xml"
	"fmt"
	"os"
)

type article struct {
	Title string `xml:"front>article-meta>title-group>article-title"`
}

func process(r *bufio.Reader) {
	var a article

	err := xml.NewDecoder(r).Decode(&a)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Error when decoding XML file %q\n", err)
	}
	fmt.Printf("article-title: %s\n", a.Title)
}

func main() {
	for _, arg := range os.Args[1:] {
		file, err := os.Open(arg)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Error when opening file %q\n", arg)
			os.Exit(1)
		}

		r := bufio.NewReader(file)
		process(r)
		file.Close()
	}
}