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use toml;
use source::Source;
use std::collections::{HashMap, BTreeMap};
use std::error::Error;
use value::{Value, ValueKind};
pub fn parse(uri: Option<&String>, text: &str, namespace: Option<&String>) -> Result<HashMap<String, Value>, Box<Error>> {
// Parse a TOML value from the provided text
let mut root: toml::Value = toml::from_str(text)?;
// Limit to namespace
if let Some(namespace) = namespace {
root = toml::Value::Table(match root {
toml::Value::Table(ref mut table) => {
if let Some(toml::Value::Table(table)) = table.remove(namespace) {
table
} else {
BTreeMap::new()
}
}
_ => {
BTreeMap::new()
}
});
}
// TODO: Have a proper error fire if the root of a file is ever not a Table
let value = from_toml_value(uri, &root);
match value.kind {
ValueKind::Table(map) => Ok(map),
_ => Ok(HashMap::new()),
}
}
fn from_toml_value(uri: Option<&String>, value: &toml::Value) -> Value {
match *value {
toml::Value::String(ref value) => Value::new(uri, value.to_string()),
toml::Value::Float(value) => Value::new(uri, value),
toml::Value::Integer(value) => Value::new(uri, value),
toml::Value::Boolean(value) => Value::new(uri, value),
toml::Value::Table(ref table) => {
let mut m = HashMap::new();
for (key, value) in table {
m.insert(key.clone(), from_toml_value(uri, value));
}
Value::new(uri, m)
}
toml::Value::Array(ref array) => {
let mut l = Vec::new();
for value in array {
l.push(from_toml_value(uri, value));
}
Value::new(uri, l)
}
_ => {
// TODO: DateTime
unimplemented!();
}
}
}
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