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// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
// Example for: *tagvalue*, *json*
// This example demonstrates loading an SPDX tag-value file from disk into memory,
// and re-saving it to a different json file on disk.
// Run project: go run exampletvtojson.go ../sample-docs/tv/hello.spdx example.json
package main
import (
"fmt"
"os"
"github.com/spdx/tools-golang/json"
"github.com/spdx/tools-golang/tagvalue"
)
func main() {
// check that we've received the right number of arguments
args := os.Args
if len(args) != 3 {
fmt.Printf("Usage: %v <spdx-file-in> <json-file-out>\n", args[0])
fmt.Printf(" Load SPDX tag-value file <spdx-file-in>, and\n")
fmt.Printf(" save it out to JSON <json-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 tag-value file
doc, err := tagvalue.Read(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 jsonsaver.
// 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()
var opt []json.WriteOption
// you can use WriteOption to change JSON format
// uncomment the following code to test it
/*
opt = append(opt, json.Indent(" ")) // to create multiline json
opt = append(opt, json.EscapeHTML(true)) // to escape HTML characters
*/
// try to save the document to disk as JSON file
err = json.Write(doc, w, opt...)
if err != nil {
fmt.Printf("Error while saving %v: %v", fileOut, err)
return
}
// it worked
fmt.Printf("Successfully saved %s\n", fileOut)
}
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