1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
// Example for: *json*, *tagvalue*
// 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"
"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 <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
doc, err := json.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 tagvalue.
// 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
err = tagvalue.Write(doc, w)
if err != nil {
fmt.Printf("Error while saving %v: %v", fileOut, err)
return
}
// it worked
fmt.Printf("Successfully saved %s\n", fileOut)
}
|
