xmldecode.go

/*
sample.xml should be located in the default working directory

<foo>
    <bar key="Key1" value="Value1" />
    <bar key="Key2" value="Value2" />
</foo>
*/
package main

import (
    "encoding/xml"
    "fmt"
    "io"
    "os"
    "bytes"
    "path/filepath"
)

func main() {
    var file *os.File

    defer func() {
        if file != nil {
            file.Close()
        }
    }()

    strapsFilePath, err := filepath.Abs("sample.xml")

    if err != nil {
        panic(err.Error())
    }

    // Open the straps.xml file
    file, err = os.Open(strapsFilePath)

    if err != nil {
        panic(err.Error())
    }

    d := xml.NewDecoder(file)

    for {
            token, err := d.Token()
            if err == io.EOF {
                err = nil
                break
            }
            if err != nil {
                panic(err)
            }
            switch token.(type) {
            case xml.StartElement:
                se := token.(xml.StartElement)
                fmt.Printf("StartElement:\n")
                fmt.Printf("\tName.Space:%s\n", se.Name.Space)
                fmt.Printf("\tName.Local:%s\n", se.Name.Local)
                for _, attr := range se.Attr {
                    if attr.Name.Space == "" {
                        fmt.Printf("\t\t%s=%s\n", attr.Name.Local, attr.Value)
                    } else {
                        fmt.Printf("\t\t%s:%s=%s\n", attr.Name.Space, attr.Name.Lo
cal, attr.Value)
                    }
                }
            case xml.EndElement:
                ee := token.(xml.EndElement)
                fmt.Printf("EndElement:\n")
                fmt.Printf("\tName.Space:%s\n", ee.Name.Space)
                fmt.Printf("\tName.Local:%s\n", ee.Name.Local)
            case xml.CharData:
                cd := token.(xml.CharData)
                fmt.Printf("CharData:\n")
                fmt.Printf("\t%v(%s)\n", token, bytes.NewBuffer(cd).String())
            case xml.Comment:
                fmt.Printf("Comment:%v\n", token)
            case xml.ProcInst:
                fmt.Printf("ProcInst:%v\n", token)
            case xml.Directive:
                fmt.Printf("Directive:%v\n", token)
            default:
                panic("unknown xml token.")
            }
    }
}