From 11301a1126e09b45e39770576db6577de23c0afa Mon Sep 17 00:00:00 2001
From: steven-omaha <35634100+steven-omaha@users.noreply.github.com>
Date: Mon, 27 Feb 2023 16:13:04 +0100
Subject: [PATCH] show supported backends in 'pacdef version'

---
 crates/pacdef_core/src/core.rs | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/crates/pacdef_core/src/core.rs b/crates/pacdef_core/src/core.rs
index 204f81c..74b3139 100644
--- a/crates/pacdef_core/src/core.rs
+++ b/crates/pacdef_core/src/core.rs
@@ -404,8 +404,16 @@ fn show_error(error: &anyhow::Error, backend: &dyn Backend) {
 
 /// If the crate was compiled from git, return `pacdef, <version> (<hash>)`.
 /// Otherwise return `pacdef, <version>`.
-const fn get_name_and_version() -> &'static str {
-    formatcp!("pacdef, version: {}", get_version_string())
+fn get_name_and_version() -> String {
+    let backends = get_included_backends();
+    let mut result = format!("pacdef, version: {}\n", get_version_string());
+    result.push_str("supported backends:");
+    for b in backends {
+        result.push_str("\n  ");
+        result.push_str(b);
+    }
+
+    result
 }
 
 /// If the crate was compiled from git, return `<version> (<hash>)`. Otherwise
@@ -420,3 +428,12 @@ pub const fn get_version_string() -> &'static str {
         formatcp!("{VERSION} ({HASH})")
     }
 }
+
+fn get_included_backends() -> Vec<&'static str> {
+    let mut result = vec![];
+    for backend in Backends::iter() {
+        result.push(backend.get_section())
+    }
+    result.sort_unstable();
+    result
+}