Add support for Windows

dist/index.js

@@ -36,6 +36,8 @@ module.exports =
 /******/ 		// Load entry module and return exports
 /******/ 		return __webpack_require__(104);
 /******/ 	};
+/******/ 	// initialize runtime
+/******/ 	runtime(__webpack_require__);
 /******/
 /******/ 	// run startup
 /******/ 	return startup();
@@ -1383,33 +1385,43 @@ const core = __webpack_require__(470)
 const io = __webpack_require__(1)
 const tc = __webpack_require__(533)
 const axios = __webpack_require__(53)
+const windows = __webpack_require__(664)
 
 const releasesURL = 'https://github.com/eregon/ruby-install-builder/releases'
 const metadataURL = 'https://raw.githubusercontent.com/eregon/ruby-install-builder/metadata'
 
 async function run() {
   try {
+    const platform = getVirtualEnvironmentName()
     const ruby = await getRubyEngineAndVersion(core.getInput('ruby-version'))
 
-    const rubiesDir = `${process.env.HOME}/.rubies`
-    await io.mkdirP(rubiesDir)
-
-    const platform = getVirtualEnvironmentName()
-    const tag = await getLatestReleaseTag()
-    const url = `${releasesURL}/download/${tag}/${ruby}-${platform}.tar.gz`
-    console.log(url)
-
-    const downloadPath = await tc.downloadTool(url)
-    await tc.extractTar(downloadPath, rubiesDir)
-
-    const rubyPrefix = `${rubiesDir}/${ruby}`
-    core.addPath(`${rubyPrefix}/bin`)
+    let rubyPrefix
+    if (platform === 'windows-latest') {
+      rubyPrefix = await windows.downloadExtractAndSetPATH(ruby)
+    } else {
+      rubyPrefix = await downloadAndExtract(platform, ruby)
+      core.addPath(`${rubyPrefix}/bin`)
+    }
     core.setOutput('ruby-prefix', rubyPrefix)
   } catch (error) {
     core.setFailed(error.message)
   }
 }
 
+async function downloadAndExtract(platform, ruby) {
+  const rubiesDir = `${process.env.HOME}/.rubies`
+  await io.mkdirP(rubiesDir)
+
+  const tag = await getLatestReleaseTag()
+  const url = `${releasesURL}/download/${tag}/${ruby}-${platform}.tar.gz`
+  console.log(url)
+
+  const downloadPath = await tc.downloadTool(url)
+  await tc.extractTar(downloadPath, rubiesDir)
+
+  return `${rubiesDir}/${ruby}`
+}
+
 async function getLatestReleaseTag() {
   const response = await axios.get(`${metadataURL}/latest_release.tag`)
   return response.data.trim()
@@ -6440,6 +6452,76 @@ function plural(ms, n, name) {
 }
 
 
+/***/ }),
+
+/***/ 664:
+/***/ (function(__unusedmodule, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "downloadExtractAndSetPATH", function() { return downloadExtractAndSetPATH; });
+// Most of this logic is from
+// https://github.com/MSP-Greg/actions-ruby/blob/master/lib/main.js
+
+const core = __webpack_require__(470)
+const exec = __webpack_require__(986)
+const tc = __webpack_require__(533)
+
+const releasesURL = 'https://github.com/oneclick/rubyinstaller2/releases'
+
+async function downloadExtractAndSetPATH(ruby) {
+  const version = ruby.split('-', 2)[1]
+  if (!ruby.startsWith('ruby-') || version.startsWith('2.3')) {
+    throw new Error(`Only ruby >= 2.4 is supported on Windows currently (input: ${ruby})`)
+  }
+  const tag = `RubyInstaller-${version}-1`
+  const base = `${tag.toLowerCase()}-x64`
+
+  const url = `${releasesURL}/download/${tag}/${base}.7z`
+  console.log(url)
+
+  const downloadPath = await tc.downloadTool(url)
+  await exec.exec(`7z x ${downloadPath} -xr!${base}\\share\\doc -oC:\\`)
+  const rubyPrefix = `C:\\${base}`
+
+  const msys2 = await linkMSYS2()
+  const newPath = setupPath(msys2, rubyPrefix)
+  core.exportVariable('PATH', newPath)
+
+  return rubyPrefix
+}
+
+async function linkMSYS2() {
+  const toolCacheVersions = tc.findAllVersions('Ruby')
+  toolCacheVersions.sort()
+  const latestVersion = toolCacheVersions.slice(-1)[0]
+  const latestHostedRuby = tc.find('Ruby', latestVersion)
+
+  const hostedMSYS2 = `${latestHostedRuby}\\msys64`
+  const msys2 = 'C:\\msys64'
+  await exec.exec(`cmd /c mklink /D ${msys2} ${hostedMSYS2}`)
+  return msys2
+}
+
+function setupPath(msys2, rubyPrefix) {
+  let path = process.env['PATH'].split(';')
+
+  // Remove conflicting dev tools from PATH
+  path = path.filter(e => !e.match(/\b(Chocolatey|CMake|mingw64|OpenSSL|Strawberry)\b/))
+
+  // Remove default Ruby in PATH
+  path = path.filter(e => !e.match(/\bRuby\b/))
+
+  // Add MSYS2 in PATH
+  path.unshift(`${msys2}\\mingw64`, `${msys2}\\usr`)
+
+  // Add the downloaded Ruby in PATH
+  path.unshift(`${rubyPrefix}\\bin`)
+
+  return path.join(';')
+}
+
+
 /***/ }),
 
 /***/ 669:
@@ -8762,4 +8844,31 @@ exports.exec = exec;
 
 /***/ })
 
-/******/ });
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+);