pub fn parse_value(content: &str, format: Format) -> Result<Value, String>Expand description
Parse a document in either format into a Value.
Examples found in repository?
examples/convert_format.rs (line 40)
15fn main() -> ExitCode {
16 let args: Vec<String> = std::env::args().collect();
17 if args.len() != 3 {
18 eprintln!("usage: convert_format <input.(json|xml)> <output.(json|xml)>");
19 return ExitCode::FAILURE;
20 }
21 let (input, output) = (&args[1], &args[2]);
22
23 let text = match std::fs::read_to_string(input) {
24 Ok(t) => t,
25 Err(e) => {
26 eprintln!("cannot read {input}: {e}");
27 return ExitCode::FAILURE;
28 }
29 };
30
31 let in_format = Format::from_path(input).unwrap_or_else(|| Format::detect(&text));
32 let out_format = match Format::from_path(output) {
33 Some(f) => f,
34 None => {
35 eprintln!("cannot infer output format from {output}: use a .json or .xml extension");
36 return ExitCode::FAILURE;
37 }
38 };
39
40 let value = match parse_value(&text, in_format) {
41 Ok(v) => v,
42 Err(e) => {
43 eprintln!("cannot parse {input} as {in_format:?}: {e}");
44 return ExitCode::FAILURE;
45 }
46 };
47
48 // "contracts" is the document element for contract files; it is only
49 // used when writing XML
50 let rendered = render_value(&value, out_format, "contracts");
51 if let Err(e) = std::fs::write(output, rendered) {
52 eprintln!("cannot write {output}: {e}");
53 return ExitCode::FAILURE;
54 }
55 println!("{input} ({in_format:?}) -> {output} ({out_format:?})");
56 ExitCode::SUCCESS
57}