Differential D4821 Diff 17075 java/src/main/java/org/softwareheritage/graph/utils/ComposePermutations.java

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java/src/main/java/org/softwareheritage/graph/utils/ComposePermutations.java

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				package org.softwareheritage.graph.utils;
				vlorentzUnsubmitted Not Done Inline Actions you should add a copyright header to all Java files in the repo, btw vlorentz: you should add a copyright header to all Java files in the repo, btw

				import com.martiansoftware.jsap.*;
				import it.unimi.dsi.Util;
				import it.unimi.dsi.fastutil.io.BinIO;

				import java.io.File;
				import java.io.IOException;

				public class ComposePermutations {
				private static JSAPResult parse_args(String[] args) {
				JSAPResult config = null;
				zackUnsubmitted Done Inline Actions A docstring stating what this is used for in the context of swh-graph would be nice to have here. (What a permutation composition is is pretty obvious both in absolute terms and in the code, but a big picture kind of brief explanation would be useful for whoever opens this file.) zack: A docstring stating what this is used for in the context of swh-graph would be nice to have…
				try {
				SimpleJSAP jsap = new SimpleJSAP(ComposePermutations.class.getName(), "", new Parameter[]{
				new UnflaggedOption("firstPermutation", JSAP.STRING_PARSER, JSAP.REQUIRED, "The first permutation"),
				new UnflaggedOption("secondPermutation", JSAP.STRING_PARSER, JSAP.REQUIRED,
				"The second permutation"),
				new UnflaggedOption("outputPermutation", JSAP.STRING_PARSER, JSAP.REQUIRED,
				"The output permutation"),});

				config = jsap.parse(args);
				if (jsap.messagePrinted()) {
				System.exit(1);
				}
				} catch (JSAPException e) {
				e.printStackTrace();
				}
				return config;
				}

				public static void main(String[] args) throws IOException, ClassNotFoundException {
				JSAPResult config = parse_args(args);
				String firstPermFilename = config.getString("firstPermutation");
				String secondPermFilename = config.getString("secondPermutation");
				String outputPermFilename = config.getString("outputPermutation");

				long[][] firstPerm = BinIO.loadLongsBig(new File(firstPermFilename));
				long[][] secondPerm = BinIO.loadLongsBig(new File(secondPermFilename));

				long[][] outputPerm = Util.composePermutationsInPlace(firstPerm, secondPerm);

				BinIO.storeLongs(outputPerm, outputPermFilename);
				}
				}