| // 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() |
| |
| // try to save the document to disk as JSON file |
| err = json.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) |
| } |