ramainen / xml-stream-parser

XML stream parser for GO

xml stream parser

xml-stream-parser is xml parser for GO. It is efficient to parse large xml data with streaming fashion.

Usage

<?xml version="1.0" encoding="UTF-8"?>
<bookstore>
   <book>
      <title>The Iliad and The Odyssey</title>
      <price>12.95</price>
      <comments>
         <userComment rating="4">Best translation I've read.</userComment>
         <userComment rating="2">I like other versions better.</userComment>
      </comments>
   </book>
   <book>
      <title>Anthology of World Literature</title>
      <price>24.95</price>
      <comments>
         <userComment rating="3">Needs more modern literature.</userComment>
         <userComment rating="4">Excellent overview of world literature.</userComment>
      </comments>
   </book>
</bookstore>

Stream over books

f, _ := os.Open("input.xml")
br := bufio.NewReaderSize(f,65536)
parser := xmlparser.NewXMLParser(br, "book")

for xml := range parser.Stream() {
	fmt.Println(xml.Childs["title"][0].InnerText)
	fmt.Println(xml.Childs["comments"][0].Childs["userComment"][0].Attrs["rating"])
	fmt.Println(xml.Childs["comments"][0].Childs["userComment"][0].InnerText)
}
   

Skip tags for speed

parser := xmlparser.NewXMLParser(br, "book").SkipElements([]string{"price", "comments"})

Error handlings

for xml := range parser.Stream() {
   if xml.Err !=nil { 
      // handle error
   }
}

Progress of parsing

// total byte read to calculate the progress of parsing
parser.TotalReadSize

If you interested check also json parser which works similarly