Add support for Ruby 2.3 on Windows

Author: eregon

.github/workflows/test.yml

@@ -16,8 +16,6 @@ jobs:
         # Use various version syntaxes here for testing
         ruby: [ .ruby-version, 2.3, ruby-2.4, 2.5, ruby-2.6.5, 2.7.0, jruby, truffleruby ]
         exclude:
-        - os: windows-latest
-          ruby: 2.3
         - os: windows-latest
           ruby: jruby
         - os: windows-latest
@@ -30,9 +28,10 @@ jobs:
         ruby-version: ${{ matrix.ruby }}
     - run: ruby --version
     - run: ridk version
-      if: matrix.os == 'windows-latest'
+      if: matrix.os == 'windows-latest' && !startsWith(matrix.ruby, '2.3')
     - name: OpenSSL version
       run: ruby -ropenssl -e 'puts OpenSSL::OPENSSL_LIBRARY_VERSION'
+      if: matrix.os == 'windows-latest'
     - name: OpenSSL test
       run: ruby -ropen-uri -e 'puts open(%{https://rubygems.org/}) { |f| f.read(1024) }'
     - name: C extension test

README.md

@@ -29,7 +29,7 @@ The action works for all [GitHub-hosted runners](https://help.github.com/en/acti
 | macOS   | `macos-latest` |
 | Windows | `windows-latest` |
 
-Ruby 2.3, JRuby and TruffleRuby are not yet supported on `windows-latest`.
+JRuby and TruffleRuby are not yet supported on `windows-latest`.
 
 The prebuilt rubies are generated by [eregon/ruby-install-builder](https://github.com/eregon/ruby-install-builder)
 and on Windows by [RubyInstaller2](https://github.com/oneclick/rubyinstaller2).  

dist/index.js

@@ -18,7 +18,7 @@
 }.sort_by { |version, entry|
   version
 }.select { |version, entry|
-  version >= "2.4"
+  version >= "2.3"
 }.map { |version, entry|
   [version, entry[:href]]
 }.to_h

generate-ruby-installer-versions.rb

@@ -1,4 +1,7 @@
 export const versions = {
+  "2.3.0": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.3.0-x64-mingw32.7z",
+  "2.3.1": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.3.1-x64-mingw32.7z",
+  "2.3.3": "https://dl.bintray.com/oneclick/rubyinstaller/ruby-2.3.3-x64-mingw32.7z",
   "2.4.1": "https://github.com/oneclick/rubyinstaller2/releases/download/2.4.1-2/rubyinstaller-2.4.1-2-x64.7z",
   "2.4.2": "https://github.com/oneclick/rubyinstaller2/releases/download/rubyinstaller-2.4.2-2/rubyinstaller-2.4.2-2-x64.7z",
   "2.4.3": "https://github.com/oneclick/rubyinstaller2/releases/download/rubyinstaller-2.4.3-2/rubyinstaller-2.4.3-2-x64.7z",

ruby-installer-versions.js

@@ -29,10 +29,14 @@ export async function install(platform, ruby) {
   await exec.exec(`7z x ${downloadPath} -xr!${base}\\share\\doc -oC:\\`)
   const rubyPrefix = `C:\\${base}`
 
-  const msys2 = await linkMSYS2()
+  const [hostedRuby, msys2] = await linkMSYS2()
   const newPath = setupPath(msys2, rubyPrefix)
   core.exportVariable('PATH', newPath)
 
+  if (version.startsWith('2.3')) {
+    core.exportVariable('SSL_CERT_FILE', `${hostedRuby}\\ssl\\cert.pem`)
+  }
+
   if (!fs.existsSync(`${rubyPrefix}\\bin\\bundle.cmd`)) {
     await exec.exec(`${rubyPrefix}\\bin\\gem install bundler -v "~> 1" --no-document`)
   }
@@ -52,7 +56,7 @@ async function linkMSYS2() {
   const hostedMSYS2 = `${latestHostedRuby}\\msys64`
   const msys2 = 'C:\\msys64'
   await exec.exec(`cmd /c mklink /D ${msys2} ${hostedMSYS2}`)
-  return msys2
+  return [latestHostedRuby, msys2]
 }
 
 function setupPath(msys2, rubyPrefix) {