aboutsummaryrefslogtreecommitdiff
path: root/examples/8-jsontotv/examplejsontotv.go
diff options
context:
space:
mode:
Diffstat (limited to 'examples/8-jsontotv/examplejsontotv.go')
-rw-r--r--examples/8-jsontotv/examplejsontotv.go68
1 files changed, 68 insertions, 0 deletions
diff --git a/examples/8-jsontotv/examplejsontotv.go b/examples/8-jsontotv/examplejsontotv.go
new file mode 100644
index 0000000..ee10bd2
--- /dev/null
+++ b/examples/8-jsontotv/examplejsontotv.go
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+
+// Example for: *json*, *tvsaver*
+
+// This example demonstrates loading an SPDX json from disk into memory,
+// and then re-saving it to a different file on disk in tag-value format .
+// Run project: go run examplejsontotv.go ../sample-docs/json/SPDXJSONExample-v2.2.spdx.json example.spdx
+package main
+
+import (
+ "fmt"
+ "os"
+
+ spdx_json "github.com/spdx/tools-golang/json"
+ "github.com/spdx/tools-golang/tvsaver"
+)
+
+func main() {
+
+ // check that we've received the right number of arguments
+ args := os.Args
+ if len(args) != 3 {
+ fmt.Printf("Usage: %v <json-file-in> <spdx-file-out>\n", args[0])
+ fmt.Printf(" Load JSON file <json-file-in>, and\n")
+ fmt.Printf(" save it out to <spdx-file-out>.\n")
+ return
+ }
+
+ // open the SPDX file
+ fileIn := args[1]
+ r, err := os.Open(fileIn)
+ if err != nil {
+ fmt.Printf("Error while opening %v for reading: %v", fileIn, err)
+ return
+ }
+ defer r.Close()
+
+ // try to load the SPDX file's contents as a json file, version 2.2
+ doc, err := spdx_json.Load2_2(r)
+ if err != nil {
+ fmt.Printf("Error while parsing %v: %v", args[1], err)
+ return
+ }
+
+ // if we got here, the file is now loaded into memory.
+ fmt.Printf("Successfully loaded %s\n", args[1])
+
+ // we can now save it back to disk, using tvsaver.
+
+ // create a new file for writing
+ fileOut := args[2]
+ w, err := os.Create(fileOut)
+ if err != nil {
+ fmt.Printf("Error while opening %v for writing: %v", fileOut, err)
+ return
+ }
+ defer w.Close()
+
+ // try to save the document to disk as an SPDX tag-value file, version 2.2
+ err = tvsaver.Save2_2(doc, w)
+ if err != nil {
+ fmt.Printf("Error while saving %v: %v", fileOut, err)
+ return
+ }
+
+ // it worked
+ fmt.Printf("Successfully saved %s\n", fileOut)
+}