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Code Issues Releases Wiki Activity

Use scanner if no console is found

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This commit is contained in:
Andrea Cavalli 2021-10-24 00:12:01 +02:00
parent 9e7f2c8f75
commit 52541b0ca8
2 changed files with 21 additions and 2 deletions
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2
example/pom.xml
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@ -26,7 +26,7 @@
<dependency> <dependency>
<groupId>it.tdlight</groupId> <groupId>it.tdlight</groupId>
<artifactId>tdlight-java</artifactId> <artifactId>tdlight-java</artifactId>
<version>2.7.8.33</version> <version>2.7.8.35</version>
</dependency> </dependency>
<!-- TDLight natives --> <!-- TDLight natives -->

21
src/main/java/it/tdlight/common/utils/ScannerUtils.java
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@ -1,8 +1,27 @@
package it.tdlight.common.utils; package it.tdlight.common.utils;
import java.io.Console;
import java.util.Scanner;
import java.util.concurrent.atomic.AtomicReference;
public final class ScannerUtils { public final class ScannerUtils {
private static final Object lock = new Object();
private static Scanner SCANNER = null;
public static String askParameter(String displayName, String question) { public static String askParameter(String displayName, String question) {
return System.console().readLine("[%s] %s", displayName, question); Console console = System.console();
if (console != null) {
return console.readLine("[%s] %s", displayName, question);
} else {
synchronized (lock) {
if (SCANNER == null) {
SCANNER = new Scanner(System.in);
Runtime.getRuntime().addShutdownHook(new Thread(() -> SCANNER.close()));
}
}
System.out.printf("[%s] %s: ", displayName, question);
return SCANNER.nextLine();
}
} }
} }