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use toml;
use source::Source;
use std::collections::{HashMap, BTreeMap};
use std::error::Error;
use value::Value;
pub struct Content {
// Root table of the TOML document
root: toml::Value,
}
impl Content {
pub fn parse(text: &str, namespace: Option<&String>) -> Result<Box<Source>, Box<Error>> {
// Parse
let mut parser = toml::Parser::new(text);
// TODO: Get a solution to make this return an Error-able
let mut root = parser.parse().unwrap();
// Limit to namespace
if let Some(namespace) = namespace {
if let Some(toml::Value::Table(table)) = root.remove(namespace) {
root = table;
} else {
// TODO: Warn?
root = BTreeMap::new();
}
}
Ok(Box::new(Content { root: toml::Value::Table(root) }))
}
}
fn from_toml_value(value: &toml::Value) -> Value {
match *value {
toml::Value::String(ref value) => Value::String(value.clone()),
toml::Value::Float(value) => Value::Float(value),
toml::Value::Integer(value) => Value::Integer(value),
toml::Value::Boolean(value) => Value::Boolean(value),
toml::Value::Table(ref table) => {
let mut m = HashMap::new();
for (key, value) in table {
m.insert(key.clone(), from_toml_value(value));
}
Value::Table(m)
}
toml::Value::Array(ref array) => {
let mut l = Vec::new();
for value in array {
l.push(from_toml_value(value));
}
Value::Array(l)
}
_ => {
unimplemented!();
}
}
}
impl Source for Content {
fn collect(&self) -> HashMap<String, Value> {
if let Value::Table(table) = from_toml_value(&self.root) {
table
} else {
unreachable!();
}
}
}
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