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use toml;
use source::Source;
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) -> 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 root = parser.parse().unwrap();
Ok(Box::new(Content { root: toml::Value::Table(root) }))
}
}
fn from_toml_value(value: &toml::Value) -> Option<Value> {
match *value {
toml::Value::String(ref value) => Some(Value::String(value.clone())),
toml::Value::Float(value) => Some(Value::Float(value)),
toml::Value::Integer(value) => Some(Value::Integer(value)),
toml::Value::Boolean(value) => Some(Value::Boolean(value)),
_ => None,
}
}
impl Source for Content {
fn get(&self, key: &str) -> Option<Value> {
// TODO: Key segment iteration is not something that should be here directly
let key_delim = '.';
let key_segments = key.split(key_delim);
let mut toml_cursor = &self.root;
for segment in key_segments {
match *toml_cursor {
toml::Value::Table(ref table) => {
if let Some(value) = table.get(segment) {
toml_cursor = value;
}
}
_ => {
// This is not a table or array
// Traversal is not possible
return None;
}
}
}
from_toml_value(toml_cursor)
}
}
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