Added today keyword for the until flag

README.md

@@ -84,5 +84,6 @@ $ git-heatmap -a "username" -a "other"
 $ git-heatmap --since "2013-08-23"
 
 # or choose a time span, both --since and --until must use a YYYY-MM-DD format
+# --until can optionally use `today` as a keyword for the current date
 $ git-heatmap --since "2013-08-23" --until "2024-08-23"
 ```

src/cli.rs

@@ -32,7 +32,12 @@ pub struct CliArgs {
 	#[arg(long("since"), default_value_t = get_since_date())]
 	pub since: String,
 
-	#[arg(long("until"))]
+	#[arg(
+		long("until"),
+		help(
+			"Optional upper limit for the time slice being checked, defaults to 365 days after the `since` date.\n`today` can be used for current date."
+		)
+	)]
 	pub until: Option<String>,
 
 	#[arg(long("split-months"), help("Split months"), default_value_t = false)]
@@ -74,4 +79,4 @@ pub struct CliArgs {
 fn get_since_date() -> String {
 	let date = Local::now() - Duration::days(364);
 	date.format("%Y-%m-%d").to_string()
-}
+}

src/main.rs

@@ -15,7 +15,10 @@ fn main() -> Result<()> {
 		.until
 		.clone()
 		.unwrap_or_else(|| libgitheatmap::get_default_until(since));
-	let until = NaiveDate::parse_from_str(&until, "%Y-%m-%d").unwrap();
+	let until = match until.to_lowercase().as_str() {
+		"today" => chrono::Local::now().date_naive(),
+		_ => NaiveDate::parse_from_str(&until, "%Y-%m-%d").unwrap(),
+	};
 
 	let split_months = args.split_months;
 	let months_per_row = args.months_per_row;