add --help and --full-version options

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() };

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 '=(.+)'

script/cli/full_version.lua

@@ -0,0 +1,2 @@
+local version = require 'version'
+print(version.getFullVersion())

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)

script/cli/usage.lua

@@ -0,0 +1,2 @@
+print('Usage: ' .. os.getenv("LUALS_BIN") ..
+    " [--help|--version|--full-version|--check|--check-worker|--doc-update|--doc]" )

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