build scripts: use special icon for EAP builds in .exe launcher

The icon from exe file is used as window icon on Windows so this is also needed to show special icons for EAP builds at runtime (IDEA-192585).

platform/build-scripts/groovy/org/jetbrains/intellij/build/impl/WindowsDistributionBuilder.groovy

@@ -16,6 +16,8 @@
 package org.jetbrains.intellij.build.impl
 
 import com.intellij.openapi.util.io.FileFilters
+import com.intellij.openapi.util.io.FileUtil
+import groovy.xml.XmlUtil
 import org.jetbrains.intellij.build.*
 import org.jetbrains.intellij.build.impl.productInfo.ProductInfoGenerator
 import org.jetbrains.intellij.build.impl.productInfo.ProductInfoValidator
@@ -187,6 +189,8 @@ class WindowsDistributionBuilder extends OsSpecificDistributionBuilder {
       String jdkEnvVarSuffix = arch == JvmArchitecture.x64 && customizer.include32BitLauncher ? "_64" : ""
       String vmOptionsEnvVarSuffix = arch == JvmArchitecture.x64 && customizer.include32BitLauncher ? "64" : ""
       def envVarBaseName = buildContext.productProperties.getEnvironmentVariableBaseName(buildContext.applicationInfo)
+      File icoFilesDirectory = new File(buildContext.paths.temp, "win-launcher-ico")
+      File appInfoForLauncher = generateApplicationInfoForLauncher(patchedApplicationInfo, icoFilesDirectory)
       new File(launcherPropertiesPath).text = """
 IDS_JDK_ONLY=$buildContext.productProperties.toolsJarRequired
 IDS_JDK_ENV_VAR=${envVarBaseName}_JDK$jdkEnvVarSuffix
@@ -208,7 +212,7 @@ IDS_VM_OPTIONS=$vmOptions
       buildContext.ant.java(classname: "com.pme.launcher.LauncherGeneratorMain", fork: "true", failonerror: "true") {
         sysproperty(key: "java.awt.headless", value: "true")
         arg(value: inputPath)
-        arg(value: patchedApplicationInfo.absolutePath)
+        arg(value: appInfoForLauncher.absolutePath)
         arg(value: "$communityHome/native/WinLauncher/WinLauncher/resource.h")
         arg(value: launcherPropertiesPath)
         arg(value: outputPath)
@@ -225,11 +229,34 @@ IDS_VM_OPTIONS=$vmOptions
           buildContext.productProperties.brandingResourcePaths.each {
             pathelement(location: it)
           }
+          pathelement(location: icoFilesDirectory.absolutePath)
         }
       }
     }
   }
 
+  /**
+   * Generates ApplicationInfo.xml file for launcher generator which contains link to proper *.ico file.
+   * //todo[nik] pass path to ico file to LauncherGeneratorMain directly (probably after IDEA-196705 is fixed).
+   */
+  File generateApplicationInfoForLauncher(File applicationInfoFile, File icoFilesDirectory) {
+    FileUtil.createDirectory(icoFilesDirectory)
+    if (icoPath == null) {
+      return applicationInfoFile
+    }
+
+    def icoFile = new File(icoPath)
+    buildContext.ant.copy(file: icoPath, todir: icoFilesDirectory.absolutePath)
+    def root = new XmlParser().parse(applicationInfoFile)
+    def iconNode = root.icon.first()
+    iconNode.@ico = icoFile.name
+    def patchedFile = new File(buildContext.paths.temp, "win-launcher-application-info.xml")
+    patchedFile.withWriter {
+      XmlUtil.serialize(root, it)
+    }
+    return patchedFile
+  }
+
   private void buildWinZip(List<String> jreDirectoryPaths, String zipNameSuffix, String winDistPath) {
     zipNameSuffix += buildContext.bundledJreManager.jreSuffix()
     buildContext.messages.block("Build Windows ${zipNameSuffix}.zip distribution") {