Add CrashReport for diff visiblity

src/main/java/net/minecraft/server/CrashReport.java

@@ -0,0 +1,160 @@
+package net.minecraft.server;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.concurrent.Callable;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class CrashReport {
+
+    private final String a;
+    private final Throwable b;
+    private final Map c = new LinkedHashMap();
+    private File d = null;
+
+    public CrashReport(String s, Throwable throwable) {
+        this.a = s;
+        this.b = throwable;
+        this.g();
+    }
+
+    private void g() {
+        this.a("Minecraft Version", (Callable) (new CrashReportVersion(this)));
+        this.a("Operating System", (Callable) (new CrashReportOperatingSystem(this)));
+        this.a("Java Version", (Callable) (new CrashReportJavaVersion(this)));
+        this.a("Java VM Version", (Callable) (new CrashReportJavaVMVersion(this)));
+        this.a("Memory", (Callable) (new CrashReportMemory(this)));
+        this.a("JVM Flags", (Callable) (new CrashReportJVMFlags(this)));
+    }
+
+    public void a(String s, Callable callable) {
+        try {
+            this.a(s, callable.call());
+        } catch (Throwable throwable) {
+            this.a(s, throwable);
+        }
+    }
+
+    public void a(String s, Object object) {
+        this.c.put(s, object == null ? "null" : object.toString());
+    }
+
+    public void a(String s, Throwable throwable) {
+        this.a(s, ("~ERROR~ " + throwable.getClass().getSimpleName() + ": " + throwable.getMessage()));
+    }
+
+    public String a() {
+        return this.a;
+    }
+
+    public Throwable b() {
+        return this.b;
+    }
+
+    public void a(StringBuilder stringbuilder) {
+        boolean flag = true;
+
+        for (Iterator iterator = this.c.entrySet().iterator(); iterator.hasNext(); flag = false) {
+            Entry entry = (Entry) iterator.next();
+
+            if (!flag) {
+                stringbuilder.append("\n");
+            }
+
+            stringbuilder.append("- ");
+            stringbuilder.append((String) entry.getKey());
+            stringbuilder.append(": ");
+            stringbuilder.append((String) entry.getValue());
+        }
+    }
+
+    public String d() {
+        StringWriter stringwriter = null;
+        PrintWriter printwriter = null;
+        String s = this.b.toString();
+
+        try {
+            stringwriter = new StringWriter();
+            printwriter = new PrintWriter(stringwriter);
+            this.b.printStackTrace(printwriter);
+            s = stringwriter.toString();
+        } finally {
+            try {
+                if (stringwriter != null) {
+                    stringwriter.close();
+                }
+
+                if (printwriter != null) {
+                    printwriter.close();
+                }
+            } catch (IOException ioexception) {
+                ;
+            }
+        }
+
+        return s;
+    }
+
+    public String e() {
+        StringBuilder stringbuilder = new StringBuilder();
+
+        stringbuilder.append("---- Minecraft Crash Report ----\n");
+        stringbuilder.append("// ");
+        stringbuilder.append(h());
+        stringbuilder.append("\n\n");
+        stringbuilder.append("Time: ");
+        stringbuilder.append((new SimpleDateFormat()).format(new Date()));
+        stringbuilder.append("\n");
+        stringbuilder.append("Description: ");
+        stringbuilder.append(this.a);
+        stringbuilder.append("\n\n");
+        stringbuilder.append(this.d());
+        stringbuilder.append("\n");
+        stringbuilder.append("Relevant Details:");
+        stringbuilder.append("\n");
+        this.a(stringbuilder);
+        return stringbuilder.toString();
+    }
+
+    public boolean a(File file1) {
+        if (this.d != null) {
+            return false;
+        } else {
+            if (file1.getParentFile() != null) {
+                file1.getParentFile().mkdirs();
+            }
+
+            try {
+                FileWriter filewriter = new FileWriter(file1);
+
+                filewriter.write(this.e());
+                filewriter.close();
+                this.d = file1;
+                return true;
+            } catch (Throwable throwable) {
+                Logger.getLogger("Minecraft").log(Level.SEVERE, "Could not save crash report to " + file1, throwable);
+                return false;
+            }
+        }
+    }
+
+    private static String h() {
+        String[] astring = new String[] { "Who set us up the TNT?", "Everything\'s going to plan. No, really, that was supposed to happen.", "Uh... Did I do that?", "Oops.", "Why did you do that?", "I feel sad now :(", "My bad.", "I\'m sorry, Dave.", "I let you down. Sorry :(", "On the bright side, I bought you a teddy bear!", "Daisy, daisy...", "Oh - I know what I did wrong!", "Hey, that tickles! Hehehe!", "I blame Dinnerbone.", "You should try our sister game, Minceraft!", "Don\'t be sad. I\'ll do better next time, I promise!", "Don\'t be sad, have a hug! <3", "I just don\'t know what went wrong :(", "Shall we play a game?", "Quite honestly, I wouldn\'t worry myself about that.", "I bet Cylons wouldn\'t have this problem.", "Sorry :(", "Surprise! Haha. Well, this is awkward.", "Would you like a cupcake?", "Hi. I\'m Minecraft, and I\'m a crashaholic.", "Ooh. Shiny.", "This doesn\'t make any sense!", "Why is it breaking :("};
+
+        try {
+            return astring[(int) (System.nanoTime() % (long) astring.length)];
+        } catch (Throwable throwable) {
+            return "Witty comment unavailable :(";
+        }
+    }
+}