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add dotenv_values method #97

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add dotenv_values method #97

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21 changes: 21 additions & 0 deletions dotenv/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -179,3 +179,24 @@ pub fn dotenv_iter() -> Result<iter::Iter<File>> {
let (_, iter) = Finder::new().find()?;
Ok(iter)
}


/// Like `dotenv`, but returns an HashMap over variables instead of loading into environment.
/// Unlike 'dotenv().ok()', this function only retrieves variables from the .env file, without loading them into the environment.
/// # Examples
/// ```no_run
/// use dotenv;
///
/// let dotenv_values: std::collections::HashMap<String, String> = dotenv::dotenv_values().unwrap();
/// dotenv_values.iter()
/// .for_each(|item| println!("{:?}", item));
///
/// ```
pub fn dotenv_values() -> Result<std::collections::HashMap<String, String>> {
let vars = dotenv_iter()?
.filter_map(|item| item.ok())
.collect::<std::collections::HashMap<String, String>>();

Ok(vars)
}