From 472d5e87e9979665a7579839eb887dcad2cb3163 Mon Sep 17 00:00:00 2001
From: Tim Ledbetter <tim.ledbetter@ladybird.org>
Date: Tue, 29 Oct 2024 09:18:14 +0000
Subject: [PATCH] Meta+LibCore: Include git hash in version string

If the `LADYBIRD_GIT_VERSION` environment variable is set, then use it
to set the version number printed by the `--version` argument.
---
 Userland/Libraries/LibCore/Version.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Userland/Libraries/LibCore/Version.cpp b/Userland/Libraries/LibCore/Version.cpp
index 8f5b646c734..fa9437595a6 100644
--- a/Userland/Libraries/LibCore/Version.cpp
+++ b/Userland/Libraries/LibCore/Version.cpp
@@ -5,12 +5,27 @@
  */
 
 #include <AK/String.h>
+#include <LibCore/Environment.h>
 #include <LibCore/Version.h>
 
 namespace Core::Version {
 
 ErrorOr<String> read_long_version_string()
 {
+    auto validate_git_hash = [](auto hash) {
+        if (hash.length() < 4 || hash.length() > 40)
+            return false;
+        for (auto ch : hash) {
+            if (!is_ascii_hex_digit(ch))
+                return false;
+        }
+        return true;
+    };
+
+    auto maybe_git_hash = Core::Environment::get("LADYBIRD_GIT_VERSION"sv);
+
+    if (maybe_git_hash.has_value() && validate_git_hash(maybe_git_hash.value()))
+        return MUST(String::formatted("Version 1.0-{}", maybe_git_hash.value()));
     return "Version 1.0"_string;
 }