Add rdfSaver example

Signed-off-by: abhishekspeer <[email protected]>

Author: abhishekspeer

examples/1-load/example_load.go

@@ -53,9 +53,6 @@ func main() {
 	fmt.Printf("==============\n")
 	fmt.Printf("%#v\n\n", doc.CreationInfo)
 
-	fmt.Printf("==============\n")
-	fmt.Printf("Packages:\n")
-	fmt.Printf("==============\n")
 	// check whether the SPDX file has at least one package
 	if doc.Packages == nil || len(doc.Packages) < 1 {
 		fmt.Printf("No packages found in SPDX document\n")

examples/8-load-save-Rdf/example_load-saveRDF.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spdx/tools-golang/v0/rdfloader"
+	"github.com/spdx/tools-golang/v0/rdfsaver"
+
+	"github.com/spdx/tools-golang/v0/rdfloader/rdf2v1"
+)
+
+func main() {
+
+	// check that we've received the right number of arguments
+	args := os.Args
+	if len(args) != 2 {
+		fmt.Printf("Usage: %v <spdx-file-in>\n", args[0])
+		fmt.Printf("  Load SPDX 2.1 tag-value file <spdx-file-in>, and\n")
+		fmt.Printf("  print a portion of its contents.\n")
+		return
+	}
+
+	// storing the input
+	input := args[1]
+
+	// try to load the SPDX file's contents as a rdf file, version 2.1
+	doc2v1 := rdfloader.Reader2_1(input)
+
+	err := rdfsaver.Saver2_1(doc2v1)
+	if err != nil {
+		fmt.Printf("Error while saving the document.")
+		return
+	}
+
+	// if we got here, the file is now loaded into memory.
+
+}
+func Parse2_1(input string) (*rdf2v1.Document, *rdf2v1.Snippet, error) {
+	parser := rdf2v1.NewParser(input)
+	defer fmt.Printf("RDF Document parsed successfully.\n")
+	defer parser.Free()
+	return parser.Parse()
+}

examples/README.md

@@ -61,3 +61,10 @@ licenses for subsequent versions of the same set of files.
 
 This example demonstrates loading an SPDX Rdf file from disk into memory,
 and printing some of its contents to standard output.
+
+## 8-load-save-Rdf/
+
+*rdfloader*, *rdfsaver*
+
+This example demonstrates loading an SPDX RDF file from disk into memory,
+and re-saving it to a different file on disk.

v0/rdfloader/rdfloader.go

@@ -14,11 +14,20 @@ func Reader2_1(input string) *spdx.Document2_1 {
 	if err != nil {
 		fmt.Errorf("Parsing Error")
 	}
-	doc2v1 := rdf2v1.TransferDocument(spdxdoc, sp)
-	if doc2v1 == nil {
-		fmt.Errorf("Translation Error")
+	if sp != nil {
+		doc2v1 := rdf2v1.TransferDocument(spdxdoc, sp)
+		if doc2v1 == nil {
+			fmt.Errorf("Translation Error")
+		}
+		return doc2v1
+	} else {
+		doc2v1 := rdf2v1.TransferDocumentWithoutSnippets(spdxdoc)
+		if doc2v1 == nil {
+			fmt.Errorf("Translation Error")
+		}
+		return doc2v1
 	}
-	return doc2v1
+	return nil
 }
 
 func Parse(input string) (*rdf2v1.Document, *rdf2v1.Snippet, error) {

v0/rdfsaver/rdfsaver.go

@@ -1,16 +1,23 @@
 package rdfsaver
 
 import (
+	"fmt"
 	"os"
 
-	"github.com/spdx/tools-golang/v0/rdfsaver/rdfsaver2v1"
+	"github.com/spdx/tools-golang/v0/spdx"
 
 	"github.com/spdx/tools-golang/v0/rdfloader/rdf2v1"
+	"github.com/spdx/tools-golang/v0/rdfloader/rdfsaver2v1"
 )
 
-func Saver2_1(spdxdoc *rdf2v1.Document, sp *rdf2v1.Snippet) error {
+func Saver2_1(doc2v1 *spdx.Document2_1) error {
 
+	newdoc2v1 := rdf2v1.CollectDocument(doc2v1)
+	newsn2v1 := rdf2v1.CollectSnippets(doc2v1)
 	output := os.Stdout
-	err := rdfsaver2v1.Write(output, spdxdoc, sp)
-	return err
+	errdoc := rdfsaver2v1.WriteDocument(output, newdoc2v1, newsn2v1)
+	if errdoc != nil {
+		fmt.Errorf("Parsing Error")
+	}
+	return errdoc
 }