com.github.rinde.rinsim.scenario.measure.MetricsIO Maven / Gradle / Ivy
/*
* Copyright (C) 2011-2016 Rinde van Lon, iMinds-DistriNet, KU Leuven
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.rinde.rinsim.scenario.measure;
import java.io.File;
import java.io.IOException;
import java.util.List;
import com.github.rinde.rinsim.geom.Point;
import com.google.common.annotations.Beta;
import com.google.common.base.Charsets;
import com.google.common.base.Joiner;
import com.google.common.io.Files;
/**
* Provides some methods to write some common properties of scenarios to a file.
* @author Rinde van Lon
*/
@Beta
public final class MetricsIO {
static final String SPACE = " ";
private MetricsIO() {}
/**
* Writes the specified list of {@link Point}s to the specified file. Each
* point is printed on a separate line using the following format:
*
*
* {@code x y }
*
*
* i.e. the coordinates are space-separated.
* @param locations The locations to write to file.
* @param f The file to write to, non-existing parent directories will be
* created.
*/
public static void writeLocationList(List locations, File f) {
final StringBuilder sb = new StringBuilder();
for (final Point p : locations) {
sb.append(p.x).append(SPACE).append(p.y).append(System.lineSeparator());
}
try {
Files.createParentDirs(f);
Files.write(sb.toString(), f, Charsets.UTF_8);
} catch (final IOException e) {
throw new IllegalStateException(e);
}
}
/**
* Writes the specified list of numbers to a file. The list is interpreted as
* the y-values of a graph, the indices of the list are used as the x-values
* of the graph. A 0 is always appended. For example, if the
* provided list is [10, 20, 30, 40], the file will contain:
*
*
* {@code 0 10}
* {@code 1 20}
* {@code 2 30}
* {@code 3 40}
* {@code 4 0}
*
*
* @param list The list of numbers to write to a file.
* @param file The file to write to.
*/
public static void writeLoads(List list, File file) {
final StringBuilder sb = new StringBuilder();
int i = 0;
for (; i < list.size(); i++) {
sb.append(i).append(SPACE).append(list.get(i))
.append(System.lineSeparator());
}
sb.append(i).append(SPACE).append(0).append(System.lineSeparator());
try {
Files.createParentDirs(file);
Files.write(sb.toString(), file, Charsets.UTF_8);
} catch (final IOException e) {
throw new IllegalStateException(e);
}
}
/**
* Writes the provided list of times to a file. The output format is as
* follows:
*
*
* {@code length}
* {@code time 1}
* {@code time 2}
* ..
* {@code time n}
*
*
* @param length The length of the scenario: [0,length)
* @param times The arrival times of events, for each time it holds that 0
* ≤ time < length.
* @param f The file to write to.
*/
public static void writeTimes(double length, List times,
File f) {
try {
Files.createParentDirs(f);
Files.write(
new StringBuilder()
.append(length)
.append(System.lineSeparator())
.append(Joiner.on(System.lineSeparator()).join(times))
.append(System.lineSeparator()),
f,
Charsets.UTF_8);
} catch (final IOException e) {
throw new IllegalStateException(e);
}
}
}