From 22b3c1ed18e24bab9a508d4bf550964de86c26c5 Mon Sep 17 00:00:00 2001
From: SangWon <swchoi1997@naver.com>
Date: Fri, 11 Oct 2024 01:32:57 +0900
Subject: [PATCH] #1 feature/dotenv_values feat: add dotenv_values method

This function is similar to the existing dotenv function, but instead of setting
environment variables, it returns the contents of the .env file as a HashMap.
This allows users to handle the contents of the .env file more flexibly.
---
 dotenv/src/lib.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/dotenv/src/lib.rs b/dotenv/src/lib.rs
index f2b1b0a..6d58314 100644
--- a/dotenv/src/lib.rs
+++ b/dotenv/src/lib.rs
@@ -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)
+}
+