From 6fbeb546bc3c925a1e1c7bcaf87ff0df7c3168ed Mon Sep 17 00:00:00 2001
From: cos <cos>
Date: Sat, 9 Aug 2025 09:43:12 +0200
Subject: [PATCH] add --help and --full-version options

---
 crates/luals/src/main.rs    |  3 +++
 main.lua                    |  2 +-
 script/cli/full_version.lua |  2 ++
 script/cli/init.lua         | 10 ++++++++++
 script/cli/usage.lua        |  2 ++
 script/version.lua          | 36 ++++++++++++++++++++++++++++++++++++
 6 files changed, 54 insertions(+), 1 deletion(-)
 create mode 100644 script/cli/full_version.lua
 create mode 100644 script/cli/usage.lua

diff --git a/crates/luals/src/main.rs b/crates/luals/src/main.rs
index 5d6f36a..2eac8a9 100644
--- a/crates/luals/src/main.rs
+++ b/crates/luals/src/main.rs
@@ -3,6 +3,9 @@ use std::{env, path::{Path, PathBuf}};
 
 #[tokio::main(flavor = "current_thread")]
 async fn main() -> LuaResult<()> {
+    unsafe {
+        env::set_var("LUALS_BIN", env!("CARGO_PKG_NAME"));
+    }
     dynamic_set_root();
 
     let lua = unsafe { Lua::unsafe_new() };
diff --git a/main.lua b/main.lua
index 823d49c..bb95386 100644
--- a/main.lua
+++ b/main.lua
@@ -22,7 +22,7 @@ local function loadArgs()
     local lastKey
     for _, v in ipairs(arg) do
         ---@type string?
-        local key, tail = v:match '^%-%-([%w_]+)(.*)$'
+        local key, tail = v:match '^%-%-([%w_-]+)(.*)$'
         local value
         if key then
             value   = tail:match '=(.+)'
diff --git a/script/cli/full_version.lua b/script/cli/full_version.lua
new file mode 100644
index 0000000..4de6245
--- /dev/null
+++ b/script/cli/full_version.lua
@@ -0,0 +1,2 @@
+local version = require 'version'
+print(version.getFullVersion())
diff --git a/script/cli/init.lua b/script/cli/init.lua
index 65e7e10..4fcde14 100644
--- a/script/cli/init.lua
+++ b/script/cli/init.lua
@@ -1,3 +1,13 @@
+if _G['HELP'] then
+    require 'cli.usage'
+    os.exit(0, true)
+end
+
+if _G['FULL_VERSION'] then
+    require 'cli.full_version'
+    os.exit(0, true)
+end
+
 if _G['VERSION'] then
     require 'cli.version'
     os.exit(0, true)
diff --git a/script/cli/usage.lua b/script/cli/usage.lua
new file mode 100644
index 0000000..37a9e37
--- /dev/null
+++ b/script/cli/usage.lua
@@ -0,0 +1,2 @@
+print('Usage: ' .. os.getenv("LUALS_BIN") ..
+    " [--help|--version|--full-version|--check|--check-worker|--doc-update|--doc]" )
diff --git a/script/version.lua b/script/version.lua
index fa17856..69d3f7b 100644
--- a/script/version.lua
+++ b/script/version.lua
@@ -17,6 +17,34 @@ local function loadVersion()
     return version
 end
 
+local function loadFullVersion()
+    local git_config = fsu.loadFile(ROOT / '.git/config')
+    local repo
+    local version
+
+    if not git_config then
+        repo = '<Unknown>'
+    else
+        repo = git_config:match 'url = %g+github.com/LuaLS/(%g+)'
+        if not repo then
+            return
+        end
+    end
+
+    local phandle = io.popen('git describe --tags')
+    if phandle == nil then
+       version = '<Unknown>'
+    else
+       version = phandle:read("*l")
+       phandle:close()
+    end
+
+    if not version then
+        version = '<Unknown>'
+    end
+    return repo .. ' ' .. version
+end
+
 local m = {}
 
 function m.getVersion()
@@ -27,4 +55,12 @@ function m.getVersion()
     return m.version
 end
 
+function m.getFullVersion()
+    if not m.full_version then
+        m.full_version = loadFullVersion() or '<Unknown>'
+    end
+
+    return m.full_version
+end
+
 return m