feat: add option for a custom SPEC file (#245)

README.md

@@ -407,6 +407,12 @@ Default: [`resources/desktop.ejs`](https://github.com/electron-userland/electron
 
 The absolute path to a custom template for the generated [FreeDesktop.org desktop entry](http://standards.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html) file.
 
+#### options.specTemplate
+Type: `String`
+Default: [`resources/spec.ejs`](https://github.com/electron-userland/electron-installer-redhat/blob/main/resources/spec.ejs)
+
+The absolute path to a custom template for the generated [SPEC file](https://rpm-packaging-guide.github.io/#what-is-a-spec-file).
+
 ## Meta
 
 * Code: `git clone git://github.com/electron-userland/electron-installer-redhat.git`

src/installer.js

@@ -37,6 +37,10 @@ class RedhatInstaller extends common.ElectronInstaller {
     return path.resolve(__dirname, '../resources/desktop.ejs')
   }
 
+  get defaultSpecTemplatePath () {
+    return path.resolve(__dirname, '../resources/spec.ejs')
+  }
+
   get packagePattern () {
     return path.join(this.stagingDir, 'RPMS', this.options.arch, '*.rpm')
   }
@@ -69,7 +73,7 @@ class RedhatInstaller extends common.ElectronInstaller {
    * See: https://fedoraproject.org/wiki/How_to_create_an_RPM_package
    */
   async createSpec () {
-    const src = path.resolve(__dirname, '../resources/spec.ejs')
+    const src = this.options.specTemplate || this.defaultSpecTemplatePath
     this.options.logger(`Creating spec file at ${this.specPath}`)
 
     return common.wrapError('creating spec file', async () => this.createTemplatedFile(src, this.specPath))

test/fixtures/custom.spec.ejs

@@ -0,0 +1,40 @@
+%define _binary_payload w<%= compressionLevel %>.xzdio
+
+Name: <%= name %>
+Version: <%= version %>
+Release: <%= revision %>%{?dist}
+<% if (description) { print(`Summary: ${description}\n`) }
+%>
+<% if (license) { print(`License: ${license}\n`) }
+if (homepage) { print(`URL: ${homepage}\n`) }
+if (license || homepage) { print('\n') }
+
+%>Requires: <%= requires.join(', ') %>
+AutoReqProv: no
+
+<% if (productDescription) {
+%>%description
+<% print(productDescription)
+print('\n\n\n') }
+
+
+%>%install
+mkdir -p %{buildroot}/usr/
+cp <%= process.platform === 'darwin' ? '-R' : '-r' %> usr/* %{buildroot}/usr/
+
+
+%files
+/usr/bin/<%= name %>
+/usr/lib/<%= name %>/
+/usr/share/applications/<%= name %>.desktop
+/usr/share/doc/<%= name %>/
+<% if (_.isObject(icon)) {
+  _.forEach(icon, function (path, resolution) {
+    %>/usr/share/icons/hicolor/<%= resolution %>/apps/<%= name %><%= resolution === 'symbolic' ? '-symbolic' : '' %>.<%= ['scalable', 'symbolic'].includes(resolution) ? 'svg' : 'png' %>
+<% }) } else {
+  %>/usr/share/pixmaps/<%= name %>.png
+<% } %>
+
+%changelog
+* Wed Feb 02 2022 John Doe <johndoe@johndoe.com> - 0.1
+- First release

test/installer.js

@@ -163,6 +163,25 @@ describe('module', function () {
     }
   )
 
+  describeInstaller(
+    'with an app with a custom SPEC file',
+    {
+      src: 'test/fixtures/app-with-asar/',
+      options: {
+        arch: 'x86',
+        specTemplate: 'test/fixtures/custom.spec.ejs'
+      }
+    },
+    'generates a `.rpm` package with custom spec',
+    async outputDir => {
+      await assertASARRpmExists(outputDir)
+      const stdout = await spawn('rpm', ['-qp', '--changelog', 'footest.x86.rpm'], { cwd: outputDir })
+      if (!stdout.includes('* Wed Feb 02 2022 John Doe <johndoe@johndoe.com> - 0.1\n- First release')) {
+        throw new Error(`RPM missing changelog:\n ${stdout}`)
+      }
+    }
+  )
+
   if (process.platform === 'darwin') {
     describeInstaller(
       'with an app with %_target_os linux',