Bug 571369: Add source for p2infExtender to git

Until now this code was pulled in binary format from Eclipse Source
website.

Change-Id: I7257722ec3cfeb17cb827d185721d5bc1c251336

releng/p2infExtender/README.md

@@ -0,0 +1 @@
+Please see comments in run.sh

releng/p2infExtender/pom.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.eclipse.epp.tools</groupId>
+  <artifactId>p2infExtender</artifactId>
+  <version>1.0-SNAPSHOT</version>
+
+  <name>p2infExtender</name>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <maven.compiler.source>11</maven.compiler.source>
+    <maven.compiler.target>11</maven.compiler.target>
+  </properties>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <configuration>
+          <archive>
+            <manifest>
+              <addClasspath>true</addClasspath>
+              <classpathPrefix>lib/</classpathPrefix>
+              <mainClass>org.eclipse.epp.tools.Updater</mainClass>
+            </manifest>
+          </archive>
+        </configuration>
+      </plugin>
+    </plugins>
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <artifactId>maven-clean-plugin</artifactId>
+          <version>3.1.0</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-resources-plugin</artifactId>
+          <version>3.0.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>3.8.0</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-jar-plugin</artifactId>
+          <version>3.2.0</version>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+  </build>
+</project>

releng/p2infExtender/run.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+
+####
+# This directory was supposed to try to recreate a Java program that has been lost to time. See
+# the history of it in https://bugs.eclipse.org/bugs/show_bug.cgi?id=571369.
+# The source here was supposed to create the same output as p2infExtender.jar does,
+# but it is nothing like it.
+# Therefore for now we are continuing to use the built jar, but no longer relying
+# on pulling it from an external website.
+
+
+set -u # run with unset flag error so that missing parameters cause build failure
+set -e # error out on any failed commands
+set -x # echo all commands used for debugging purposes
+
+DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+java -jar ${DIR}/p2infExtender.jar
+
+
+exit 0
+# The rest of this script can be used instead of the above if someone writes the
+# expected Java code
+
+mvn -f ${DIR} package
+java -jar ${DIR}/target/p2infExtender-1.0-SNAPSHOT.jar

releng/p2infExtender/src/main/java/org/eclipse/epp/tools/Updater.java

@@ -0,0 +1,128 @@
+/****************************************************************************
+* Copyright (c) 2016, 2021 Ed Merks (Berlin, Germany) and others.
+* All rights reserved. This program and the accompanying materials
+* are made available under the terms of the Eclipse Public License v2.0
+* which accompanies this distribution, and is available at
+* http://www.eclipse.org/legal/epl-v20.html
+*******************************************************************************/
+package org.eclipse.epp.tools;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.OutputStream;
+import java.io.PrintStream;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
+
+public class Updater {
+
+	public static void main(String[] args) throws Exception {
+		System.out.println("####" + System.getProperty("user.dir"));
+
+		DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
+		documentBuilderFactory.setNamespaceAware(true);
+		documentBuilderFactory.setValidating(false);
+		DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
+
+		File file = new File(System.getProperty("user.dir"), "../../packages").getCanonicalFile();
+		for (File project : file.listFiles()) {
+			if (project.getName().endsWith(".product")) {
+
+				List<String> rootFeatures = new ArrayList<String>();
+				File productFile = new File(project, "epp.product");
+				Document document = documentBuilder.parse(new FileInputStream(productFile));
+				NodeList features = document.getElementsByTagName("feature");
+				for (int i = 0, length = features.getLength(); i < length; ++i) {
+					Element feature = (Element) features.item(i);
+					if ("root".equals(feature.getAttribute("installMode"))) {
+						rootFeatures.add(feature.getAttribute("id"));
+					}
+				}
+
+				if (rootFeatures.isEmpty()) {
+					System.out.println("Skipping " + productFile);
+
+				} else {
+					System.out.println("Processing  " + productFile);
+					System.out.println(rootFeatures);
+
+					File p2InfFile = new File(project, "p2.inf");
+					FileInputStream in = new FileInputStream(p2InfFile);
+					byte[] bytes = new byte[in.available()];
+					in.read(bytes);
+					in.close();
+					String content = new String(bytes, "8859_1");
+
+					Pattern propertyPattern = Pattern.compile(
+							"^properties\\.([0-9]*)\\.(name|value)\\s*=\\s*((:?[^\r\n\\\\]|\\\\\r?\n|\\\\[^\r\n])*)(\r?\n)",
+							Pattern.DOTALL | Pattern.MULTILINE);
+
+					int newProperty = 0;
+					int newPosition = -1;
+					String nl = null;
+					int oldStart = -1;
+					int oldEnd = -1;
+					int oldProperty = -1;
+					for (Matcher matcher = propertyPattern.matcher(content); matcher.find();) {
+						String propertyKind = matcher.group(2);
+						int property = Integer.parseInt(matcher.group(1));
+						if ("name".equals(propertyKind)
+								&& "org.eclipse.equinox.p2.product.install.roots".equals(matcher.group(3))) {
+							oldStart = matcher.start();
+							oldProperty = property;
+						} else if ("value".equals(propertyKind) && property == oldProperty) {
+							oldEnd = matcher.end(4);
+						}
+
+						newProperty = Math.max(newProperty, property + 1);
+						// System.err.println(">" + matcher.group(1) + " " + propertyKind + " '" + matcher.group(3) + "'");
+						newPosition = matcher.end(4);
+						nl = matcher.group(5);
+					}
+
+					if (true) {
+						OutputStream o = new FileOutputStream(p2InfFile);
+						PrintStream out = new PrintStream(p2InfFile, "8859_1");
+
+						if (oldProperty != -1) {
+							newProperty = oldProperty;
+						}
+
+						if (oldStart == -1) {
+							out.print(content.substring(0, newPosition));
+							out.print(nl);
+							out.print(nl);
+						} else {
+							out.print(content.substring(0, oldStart));
+						}
+
+						out.print("properties." + newProperty + ".name = org.eclipse.equinox.p2.product.install.roots");
+						out.print(nl);
+						out.print("properties." + newProperty + ".value =");
+						for (int i = 0, size = rootFeatures.size(); i < size; ++i) {
+							out.print(" \\");
+							out.print(nl);
+							out.print(' ');
+							out.print(rootFeatures.get(i));
+						}
+
+						out.print(content.substring(oldEnd != -1 ? oldEnd : newPosition));
+
+						out.close();
+						o.close();
+					}
+				}
+			}
+		}
+	}
+}