From 8deda5a91ff3de167e80d805e8856a74d661fb9c Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Sun, 12 Mar 2017 21:09:32 -0400
Subject: speed, aggregate

---
 dslog/Main.java | 57 ++++++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 42 insertions(+), 15 deletions(-)

diff --git a/dslog/Main.java b/dslog/Main.java
index f95be77..40851bc 100644
--- a/dslog/Main.java
+++ b/dslog/Main.java
@@ -1,38 +1,65 @@
 package dslog;
 
-import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
 class Main {
 	public static void dslog2csv(String[] args) throws IOException {
 		for (String filename : args) {
 			System.out.println("Filename: "+filename);
-			DslogReader file = new DslogReader(new FileInputStream(filename));
+			DslogReader file = new DslogReader(Files.newInputStream(Paths.get(filename)));
 			System.out.println("Format Version: "+file.version);
 			System.out.println("Start Time: "+file.startTime);
 			CsvWriter.Dslog2CSV(file, System.out);
 		}
 	}
 
+	public static class LogSet {
+		public DslogReader dslog;
+		public DseventsReader dsevents;
+		public PdplogReader pdplog;
+	}
+
+	private static LogSet getSet(Map<String, LogSet> sets, String name) {
+		LogSet set;
+		synchronized (sets) {
+			set = sets.get(name);
+			if (set == null) {
+				set = new LogSet();
+				sets.put(name, set);
+			}
+		}
+		return set;
+	}
+
 	public static void main(String[] args) throws IOException {
 		for (String dirname : args) {
-			for (File file : (new File(dirname)).listFiles()) {
+			Map<String, LogSet> logsets = new HashMap<String, LogSet>();
+			List<Exception> errs = new ArrayList<Exception>();
+			Files.list(Paths.get(dirname)).parallel().forEach(filepath->{
 				try {
-					if (file.getName().endsWith(".dslog")) {
-						DslogReader dslog = new DslogReader(new FileInputStream(file));
-						System.out.println(file.getName()+" : "+dslog.version+" : "+dslog.startTime);
-					} else if (file.getName().endsWith(".dsevents")) {
-						DseventsReader dsevents = new DseventsReader(new FileInputStream(file));
-						System.out.println(file.getName()+" : "+dsevents.version+" : "+dsevents.startTime);
-					} else if (file.getName().endsWith(".pdplog")) {
-						PdplogReader pdplog = new PdplogReader(new FileInputStream(file));
-						System.out.println(file.getName()+" : "+pdplog.version);
+					String filename = filepath.getFileName().toString();
+					if (filename.endsWith(".dslog")) {
+						String setname = filename.substring(0, filename.lastIndexOf('.'));
+						getSet(logsets, setname).dslog = new DslogReader(Files.newInputStream(filepath));
+					} else if (filename.endsWith(".dsevents")) {
+						String setname = filename.substring(0, filename.lastIndexOf('.'));
+						getSet(logsets, setname).dsevents = new DseventsReader(Files.newInputStream(filepath));
+					} else if (filename.endsWith(".pdplog")) {
+						String setname = filename.substring(0, filename.lastIndexOf('.'));
+						getSet(logsets, setname).pdplog = new PdplogReader(Files.newInputStream(filepath));
 					}
 				} catch (Exception e) {
-					(new IOException("Could not read file: "+file.toString(), e)).printStackTrace();
+					synchronized (errs) {
+						errs.add(new IOException("Could not read file: "+filepath.toString(), e));
+					}
 				}
-			}
+			});
 		}
 	}
 }
-- 
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