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package main
import (
"bufio"
"bytes"
"fmt"
"github.com/spdx/gordf/rdfloader/parser"
xmlreader "github.com/spdx/gordf/rdfloader/xmlreader"
"github.com/spdx/gordf/rdfwriter"
"io"
"os"
"strings"
)
func xmlreaderFromString(fileContent string) xmlreader.XMLReader {
return xmlreader.XMLReaderFromFileObject(bufio.NewReader(io.Reader(bytes.NewReader([]byte(fileContent)))))
}
func main() {
testString := `
<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/">
<rdf:Description rdf:about="http://www.w3.org/">
<dc:title>World Wide Web Consortium</dc:title>
</rdf:Description>
</rdf:RDF>
`
// in the real world, this will be replaced with
xmlReader := xmlreaderFromString(testString)
// parsing the underlying xml structure of rdf file.
rootBlock, err := xmlReader.Read()
if err != nil {
fmt.Printf("XML reading error: %v\n", err)
os.Exit(1)
}
// creating a new parser object
rdfParser := parser.New()
// sets rdf triples from the xml elements from the xmlreader
rdfParser.Parse(rootBlock)
// Example 1:
// Getting string of all the triples
tab := " "
opString, err := rdfwriter.TriplesToString(rdfParser.Triples, rdfParser.SchemaDefinition, tab)
if err != nil {
fmt.Printf("error in a valid example: %v\n", err)
os.Exit(1)
}
asterisks := strings.Repeat("*", 33)
fmt.Println(asterisks, "OUTPUT String", asterisks)
fmt.Println(opString)
// Example 2: writing rdf-triples to a file.
var b bytes.Buffer
// the output will be written to the buffer.
err = rdfwriter.WriteToFile(&b, rdfParser.Triples, rdfParser.SchemaDefinition, tab)
if err != nil {
fmt.Printf("write to file error: %v\n", err)
os.Exit(1)
}
}
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