fix: print a warning if no tool was installed

Author: aminya

README.md

@@ -37,7 +37,7 @@ The package can be used locally or from CI services like GitHub Actions.
 
 # Usage
 
-# From Terminal
+## From Terminal
 
 You should download the executable file or the js file (if Nodejs installed), and run it with the available options.
 
@@ -105,7 +105,7 @@ sudo node ./setup_cpp.js --compiler llvm --cmake true --ninja true --ccache true
 source ~/.profile # reload the environment
 ```
 
-# Inside GitHub Actions
+## Inside GitHub Actions
 
 Here is a complete cross-platform example that tests llvm, gcc, and msvc. It also uses cmake, ninja, vcpkg, and cppcheck.
 
@@ -157,14 +157,16 @@ jobs:
         uses: aminya/setup-cpp@v1
         with:
           compiler: ${{ matrix.compiler }}
+          vcvarsall: ${{ contains(matrix.os, 'windows') }}
           cmake: true
           ninja: true
           vcpkg: true
-          cppcheck: true # instead of `true`, which chooses the default version, you can pass a specific version.
-          # add any tool that you need here...
+          cppcheck: true
+          clangtidy: true # instead of `true`, which chooses the default version, you can pass a specific version.
+          # ...
 ```
 
-# Inside Docker
+## Inside Docker
 
 Here is an example for using setup_cpp to make a builder image that has the Cpp tools you need.
 
@@ -196,15 +198,15 @@ If you want to build the ones included, then run:
 docker build -f ./building/docker/debian.dockerfile -t setup_cpp .
 ```
 
-Where you should use the path to the docker after `-f`.
+Where you should use the path to the dockerfile after `-f`.
 
 After build, run the following to start an interactive shell in your container
 
 ```ps1
 docker run -it setup_cpp
 ```
 
-# Inside Docker inside GitHub Actions
+## Inside Docker inside GitHub Actions
 
 You can use the docker file discussed in the previous section inside GitHub Actions like the following:
 
@@ -226,7 +228,7 @@ jobs:
           ACTIONS_ALLOW_UNSECURE_COMMANDS: true
 ```
 
-# GitLab PipeLines
+## Inside GitLab pipelines
 
 The following gives an example for setting up a C++ environment inside GitLab pipelines.
 
@@ -289,6 +291,7 @@ test_linux_gcc:
 
 # Usage Examples
 
+- [cpp-best-practices starter project](https://github.com/cpp-best-practices/cpp_starter_project)
 - [libclang](https://github.com/atilaneves/libclang)
 - [dpp](https://github.com/atilaneves/dpp)
 - [d-tree-sitter](https://github.com/aminya/d-tree-sitter)

dist/setup_cpp.js

@@ -21,7 +21,7 @@ import semverValid from "semver/functions/valid"
 import { getVersion } from "./default_versions"
 import { setupGcc } from "./gcc/gcc"
 import { InstallationInfo } from "./utils/setup/setupBin"
-import { error, success } from "./utils/io/io"
+import { error, success, warning } from "./utils/io/io"
 import { setupVcpkg } from "./vcpkg/vcpkg"
 import { join } from "path"
 import { setupVCVarsall } from "./vcvarsall/vcvarsall"
@@ -134,11 +134,7 @@ export async function main(args: string[]): Promise<number> {
           installationInfo = await setupFunction(getVersion(tool, value), join(setupCppDir, tool), arch)
         }
         // preparing a report string
-        if (installationInfo !== undefined) {
-          successMessages.push(getSuccessMessage(tool, installationInfo))
-        } else {
-          successMessages.push(`${tool} was successfully installed`)
-        }
+        successMessages.push(getSuccessMessage(tool, installationInfo))
       } catch (e) {
         // push error message to the logger
         error(e as string | Error)
@@ -158,14 +154,20 @@ export async function main(args: string[]): Promise<number> {
         case "llvm":
         case "clang":
         case "clang++": {
-          await setupLLVM(getVersion("llvm", version) as string, join(setupCppDir, "llvm"), arch)
+          const installationInfo = await setupLLVM(
+            getVersion("llvm", version) as string,
+            join(setupCppDir, "llvm"),
+            arch
+          )
+          successMessages.push(getSuccessMessage("llvm", installationInfo))
           break
         }
         case "gcc":
         case "mingw":
         case "cygwin":
         case "msys": {
-          await setupGcc(getVersion("gcc", version) as string, join(setupCppDir, "gcc"), arch)
+          const installationInfo = await setupGcc(getVersion("gcc", version) as string, join(setupCppDir, "gcc"), arch)
+          successMessages.push(getSuccessMessage("gcc", installationInfo))
           break
         }
         case "cl":
@@ -175,14 +177,20 @@ export async function main(args: string[]): Promise<number> {
         case "visualstudio":
         case "visualcpp":
         case "visualc++": {
-          await setupMSVC(getVersion("msvc", version) as string, join(setupCppDir, "msvc"), arch)
+          const installationInfo = await setupMSVC(
+            getVersion("msvc", version) as string,
+            join(setupCppDir, "msvc"),
+            arch
+          )
+          successMessages.push(getSuccessMessage("msvc", installationInfo))
           break
         }
         case "appleclang":
         case "applellvm": {
           core.info("Assuming apple-clang is already installed")
           addEnv("CC", "clang")
           addEnv("CXX", "clang++")
+          successMessages.push(getSuccessMessage("apple-clang", undefined))
           break
         }
         default: {
@@ -195,6 +203,11 @@ export async function main(args: string[]): Promise<number> {
     errorMessages.push(`Failed to install the ${maybeCompiler}`)
   }
 
+  if (successMessages.length === 0 && errorMessages.length === 0) {
+    warning("setup_cpp was called without any arguments. Nothing to do.")
+    return 0
+  }
+
   // report the messages in the end
   successMessages.forEach((tool) => success(tool))
   errorMessages.forEach((tool) => error(tool))
@@ -292,8 +305,11 @@ function maybeGetInput(key: string) {
   return undefined // skip installation
 }
 
-function getSuccessMessage(tool: string, installationInfo: InstallationInfo) {
+function getSuccessMessage(tool: string, installationInfo: InstallationInfo | undefined | void) {
   let msg = `${tool} was successfully installed`
+  if (installationInfo === undefined) {
+    return msg
+  }
   if ("installDir" in installationInfo) {
     msg += `\nThe installation directory is ${installationInfo.installDir}`
   }

dist/setup_cpp.js.map

@@ -8,3 +8,7 @@ export function error(err: string | Error) {
 export function success(msg: string) {
   return isGitHubCI() ? core.info(msg) : console.log(`\x1b[32m${msg}\x1b[0m`)
 }
+
+export function warning(msg: string) {
+  return isGitHubCI() ? core.warning(msg) : console.log(`\x1b[33m${msg}\x1b[0m`)
+}