vendor/yaml-rust/examples/dump_yaml.rs

   1 extern crate yaml_rust;
   2
   3 use std::env;
   4 use std::fs::File;
   5 use std::io::prelude::*;
   6 use yaml_rust::yaml;
   7
   8 fn print_indent(indent: usize) {
   9     for _ in 0..indent {
  10         print!("    ");
  11     }
  12 }
  13
  14 fn dump_node(doc: &yaml::Yaml, indent: usize) {
  15     match doc {
  16         &yaml::Yaml::Array(ref v) => {
  17             for x in v {
  18                 dump_node(x, indent + 1);
  19             }
  20         },
  21         &yaml::Yaml::Hash(ref h) => {
  22             for (k, v) in h {
  23                 print_indent(indent);
  24                 println!("{:?}:", k);
  25                 dump_node(v, indent + 1);
  26             }
  27         },
  28         _ => {
  29             print_indent(indent);
  30             println!("{:?}", doc);
  31         }
  32     }
  33 }
  34
  35 fn main() {
  36     let args: Vec<_> = env::args().collect();
  37     let mut f = File::open(&args[1]).unwrap();
  38     let mut s = String::new();
  39     f.read_to_string(&mut s).unwrap();
  40
  41     let docs = yaml::YamlLoader::load_from_str(&s).unwrap();
  42     for doc in &docs {
  43         println!("---");
  44         dump_node(doc, 0);
  45     }
  46 }