fix: enhance version input handling in action.yml to support semantic version strings

Author: shenxianpeng

action.yml

@@ -39,9 +39,10 @@ inputs:
   version:
     description: |
       The desired version of the [clang-tools](https://github.com/cpp-linter/clang-tools-pip) to use.
-      Accepted options are strings which can be 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12 or 11.
+      Accepted options include major versions like 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12 or 11.
 
       - Set this option to a blank string (`''`) to use the platform's default installed version.
+      - Semantic version strings like `20.1` or `20.1.7` are also supported.
       - This value can also be a path to where the clang tools are installed (if using a custom install location).
     required: false
     default: '20'
@@ -384,13 +385,17 @@ runs:
         let version = try {
           $version_str | into int
         } catch {
-          print "Version is not an integer"
-          if not ($version_str | path exists) {
-            print "::error title=Invalid version input::Version must be a blank string, an integer, or a valid path"
-            exit 1
-          } else {
-            print $"(ansi yellow)Using custom clang tools installation at path: ($version_str)(ansi reset)"
-            exit 0
+          try {
+            $version_str | split row '.' | first | into int
+          } catch {
+            print "Version does not have an integer major component"
+            if not ($version_str | path exists) {
+              print "::error title=Invalid version input::Version must be a blank string, an integer, a semantic version string, or a valid path"
+              exit 1
+            } else {
+              print $"(ansi yellow)Using custom clang tools installation at path: ($version_str)(ansi reset)"
+              exit 0
+            }
           }
         }
 
@@ -411,7 +416,13 @@ runs:
 
         print $"\n(ansi purple)Ensuring ($tools | str join ' and ') ($version_str) are present(ansi reset)"
         for tool in $tools {
-          print $"Installing ($tool) ($version)"
+          let installed_tool = $"($tool)-($version_str)"
+          if not ((which $installed_tool) | is-empty) {
+            print $"(ansi yellow)Using existing ($installed_tool) from a prior installation source(ansi reset)"
+            continue
+          }
+
+          print $"Installing ($tool) ($version_str)"
           let cmd = if (
             (($version < 13) and ($tool | str ends-with "tidy"))
             or (
@@ -420,9 +431,9 @@ runs:
               and not ((version | get "build_os") | str starts-with "linux")
             )
           ) {
-            [clang-tools --tool $tool --install $version]
+            [clang-tools --tool $tool --install $version_str]
           } else {
-            [clang-tools-wheel --tool $tool --version $version]
+            [clang-tools-wheel --tool $tool --version $version_str]
           }
           ^$'($env.UV_INSTALL_DIR)/uv' ...$uv_args ...$cmd
         }