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functionalj.environments.Console Maven / Gradle / Ivy
// ============================================================================
// Copyright (c) 2017-2021 Nawapunth Manusitthipol (NawaMan - http://nawaman.net).
// ----------------------------------------------------------------------------
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// ============================================================================
package functionalj.environments;
import static functionalj.function.Func.f;
import static functionalj.ref.Run.With;
import static java.lang.String.format;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UncheckedIOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.UUID;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicReference;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import functionalj.InterruptedRuntimeException;
import functionalj.function.FuncUnit1;
import functionalj.functions.ThrowFuncs;
import functionalj.list.FuncList;
import functionalj.promise.DeferAction;
import functionalj.promise.Promise;
import functionalj.ref.ComputeBody;
import functionalj.ref.RunBody;
import functionalj.stream.BlockingQueueIteratorPlus;
import functionalj.stream.StreamPlus;
import lombok.val;
public final class Console {
private Console() {
}
public static FuncUnit1 print = Console::print;
public static FuncUnit1 println = Console::println;
public static FuncUnit1 printf(String format) {
return obj -> print(format(format, obj));
}
public static Console.Instance print(Object text) {
return Env.console().print(text);
}
public static Console.Instance println(Object line) {
return Env.console().println(line);
}
public static Console.Instance println() {
return Env.console().println();
}
public static Console.Instance outPrint(Object text) {
return Env.console().outPrint(text);
}
public static Console.Instance outPrintln(Object line) {
return Env.console().outPrintln(line);
}
public static Console.Instance outPrintln() {
return Env.console().outPrintln();
}
public static Console.Instance errPrint(Object text) {
return Env.console().errPrint(text);
}
public static Console.Instance errPrintln(Object line) {
return Env.console().errPrintln(line);
}
public static Console.Instance errPrintln() {
return Env.console().outPrintln();
}
public static String readln() {
return Env.console().readln();
}
public static String pollln() {
return Env.console().pollln();
}
public static Promise inputLine() {
return Env.console().inputLine();
}
public static void stopRead() {
Env.console().stopRead();
}
public static abstract class Instance {
public final Console.Instance print(Object text) {
return outPrint(text);
}
public final Console.Instance println(Object line) {
return outPrintln(line);
}
public final Console.Instance printf(String format, Object ... args) {
return outPrintf(format, args);
}
public final Console.Instance println() {
return outPrintln();
}
public abstract Console.Instance outPrint(Object text);
public abstract Console.Instance outPrintln(Object line);
public abstract Console.Instance outPrintf(String format, Object ... args);
public abstract Console.Instance outPrintln();
public abstract Console.Instance errPrint(Object text);
public abstract Console.Instance errPrintln(Object line);
public abstract Console.Instance errPrintf(String format, Object ... args);
public abstract Console.Instance errPrintln();
public abstract String readln();
public abstract String pollln();
public Promise inputLine() {
return DeferAction.run(()->{
String str;
while ((str = pollln()) == null) {
Thread.sleep(1);
}
return str;
})
.getPromise();
}
public abstract void stopRead();
}
public static class StubRecord {
private final DATA data;
private final FuncList outLines;
private final FuncList errLines;
private final FuncList inLines;
public StubRecord(DATA data, FuncList outLines, FuncList errLines, FuncList inLines) {
this.data = data;
this.outLines = outLines;
this.errLines = errLines;
this.inLines = inLines;
}
public DATA getData() {
return data;
}
public StreamPlus outLines() {
return outLines.stream();
}
public StreamPlus errLines() {
return errLines.stream();
}
public StreamPlus inLines() {
return inLines.stream();
}
public String toString() {
return "++++++++++++++++++++\n" +
"Data: " + data + "\n" +
"outLines(" + outLines.size() + "): \n " + outLines.join("\n ") + "\n" +
"errLines(" + errLines.size() + "): \n " + errLines.join("\n ") + "\n" +
"inLines(" + inLines.size() + "): \n " + inLines.join("\n ") + "\n" +
"--------------------"
;
}
}
public static StubRecord useStub(RunBody body) throws EXCEPTION {
return useStub(new ConsoleInQueue(), ()->{ body.run(); return null; });
}
public static StubRecord useStub(ComputeBody body) throws EXCEPTION {
return useStub(new ConsoleInQueue(), ()->{ body.run(); return null; });
}
public static StubRecord useStub(FuncUnit1 holder, RunBody body)
throws EXCEPTION {
val inQueue = new ConsoleInQueue();
if (holder != null)
holder.accept(inQueue);
return useStub(inQueue, ()->{ body.run(); return null; });
}
public static StubRecord useStub(FuncUnit1 holder,
ComputeBody body) throws EXCEPTION {
val inQueue = new ConsoleInQueue();
if (holder != null)
holder.accept(inQueue);
return useStub(inQueue, ()->{ body.run(); return null; });
}
public static StubRecord useStub(Stream inLines, RunBody body)
throws EXCEPTION {
return useStub(inLines, ()->{ body.run(); return null; });
}
public static StubRecord useStub(ConsoleInQueue inQueue, RunBody body)
throws EXCEPTION {
return useStub(inQueue, ()->{ body.run(); return null; });
}
public static StubRecord useStub(Stream inLines, ComputeBody body)
throws EXCEPTION {
val inQueue = new ConsoleInQueue(StreamPlus.from(inLines).toJavaList());
return useStub(true, inQueue, body);
}
public static StubRecord useStub(ConsoleInQueue inQueue, ComputeBody body)
throws EXCEPTION {
return useStub(false, inQueue, body);
}
private static StubRecord useStub(boolean isInStreamDone, ConsoleInQueue inQueue,
ComputeBody body) throws EXCEPTION {
val stub = new Console.Stub(isInStreamDone, inQueue);
val data = With(Env.refs.console.butWith(stub)).run(body);
stub.flush();
val outLines = stub.outLines().toImmutableList();
val errLines = stub.errLines().toImmutableList();
val inLines = stub.recordedInLines().toImmutableList();
val result = new StubRecord(data, outLines, errLines, inLines);
return result;
}
public static class System extends Instance {
public static Instance instance = new System();
private static class InPuller {
private static final ConcurrentLinkedQueue lines = new ConcurrentLinkedQueue();
private static final AtomicReference pullThread = new AtomicReference();
static {
if (pullThread.get() == null) {
if (pullThread.compareAndSet(null, createPullThread())) {
pullThread.get().start();
}
}
}
private static Thread createPullThread() {
Thread thread = new Thread(()->{
try (BufferedReader br = new BufferedReader(new InputStreamReader(java.lang.System.in))) {
br.lines()
.forEach(lines::add);
} catch (UncheckedIOException e) {
} catch (IOException e) {
throw new InterruptedRuntimeException(e);
}
}, "SystemInReadThread");
thread.setDaemon(false);
return thread;
}
static String readln() {
String line;
while ((line = lines.poll()) == null);
return line;
}
static String pollln() {
return lines.poll();
}
static void stopRead() {
pullThread.getAndUpdate(t -> {
t.interrupt();
try {
java.lang.System.in.close();
} catch (IOException e) {
e.printStackTrace();
}
return t;
});
}
}
@Override
public Instance outPrint(Object text) {
java.lang.System.out.print(text);
return this;
}
@Override
public Instance outPrintln(Object line) {
java.lang.System.out.println(line);
return this;
}
@Override
public Instance outPrintf(String format, Object ... args) {
java.lang.System.out.printf(format, args);
return this;
}
@Override
public Instance outPrintln() {
java.lang.System.out.println();
return this;
}
@Override
public Instance errPrint(Object text) {
java.lang.System.err.print(text);
return this;
}
@Override
public Instance errPrintln(Object line) {
java.lang.System.err.println(line);
return this;
}
@Override
public Instance errPrintf(String format, Object ... args) {
java.lang.System.err.printf(format, args);
return this;
}
@Override
public Instance errPrintln() {
java.lang.System.err.println();
return this;
}
@Override
public String readln() {
return InPuller.readln();
}
@Override
public String pollln() {
return InPuller.pollln();
}
public void stopRead() {
InPuller.stopRead();
}
}
public static class Stub extends Instance {
public static String newEndValue() {
return UUID.randomUUID().toString();
}
private final AtomicReference> outTexts = new AtomicReference<>(new ConcurrentLinkedQueue());
private final AtomicReference> errTexts = new AtomicReference<>(new ConcurrentLinkedQueue());
private final ConcurrentLinkedQueue outLines = new ConcurrentLinkedQueue();
private final ConcurrentLinkedQueue errLines = new ConcurrentLinkedQueue();
private final ConcurrentLinkedQueue inLines = new ConcurrentLinkedQueue();
private final ConsoleInQueue inQueue;
private final BlockingQueueIteratorPlus lines;
private final FuncUnit1 putInLine;
public Stub() {
this(false, new ConsoleInQueue());
}
public Stub(Collection inQueue) {
this(true, new ConsoleInQueue(inQueue));
}
public Stub(ConsoleInQueue inQueue) {
this(false, inQueue);
}
public Stub(boolean inStreamEnded, ConsoleInQueue inQueue) {
this.inQueue = (inQueue != null) ? inQueue : new ConsoleInQueue();
this.lines = new BlockingQueueIteratorPlus(this.inQueue.getEndValue(), this.inQueue);
this.putInLine = f((String line) -> this.inQueue.put(line)).carelessly();
if (inStreamEnded)
this.inQueue.end();
}
public StreamPlus outLines() {
return StreamPlus.from(outLines.stream());
}
public void clear() {
clearOutLines();
clearErrLines();
clearInLines();
}
public void clearOutLines() {
outLines.clear();
}
public StreamPlus errLines() {
return StreamPlus.from(errLines.stream());
}
public void clearErrLines() {
errLines.clear();
}
@Override
public Instance outPrint(Object obj) {
val text = String.valueOf(obj);
outTexts.get().add(text);
return this;
}
@Override
public Instance outPrintln(Object line) {
println(line, outTexts, outLines);
return this;
}
@Override
public Instance outPrintf(String format, Object ... args) {
val line = String.format(format, args);
return outPrintln(line);
}
@Override
public Instance outPrintln() {
return outPrintln("");
}
@Override
public Instance errPrint(Object obj) {
val text = String.valueOf(obj);
errTexts.get().add(text);
return this;
}
@Override
public Instance errPrintln(Object line) {
println(line, errTexts, errLines);
return this;
}
@Override
public Instance errPrintf(String format, Object ... args) {
val line = String.format(format, args);
return errPrintln(line);
}
@Override
public Instance errPrintln() {
return errPrintln("");
}
public void flush() {
val outs = outTexts.get();
if ((outs != null) && !outs.isEmpty()) {
outPrintln();
}
val errs = errTexts.get();
if ((errs != null) && !errs.isEmpty()) {
errPrintln();
}
}
private void println(Object line,
AtomicReference> texts,
ConcurrentLinkedQueue lines) {
texts.getAndUpdate(oldQuery -> {
if (oldQuery.isEmpty()) {
val fullLine = String.valueOf(line);
val lineArray = fullLine.split("(\n|\r\n?)");
Arrays.stream(lineArray)
.forEach(lines::add);
return oldQuery;
}
val fullLine = oldQuery.stream().collect(Collectors.joining()) + String.valueOf(line);
val lineArray = fullLine.split("(\n|\r\n?)");
Arrays.stream(lineArray)
.forEach(lines::add);
return new ConcurrentLinkedQueue();
});
}
public Stub addInLines(String ... lines) {
Arrays.stream(lines).forEach(putInLine);
return this;
}
public Stub addInLines(Iterable lines) {
lines.forEach(putInLine);
return this;
}
public Stub addInLines(Iterator lines) {
while (lines.hasNext()) {
val line = lines.next();
putInLine.accept(line);
}
return this;
}
public Stub addInLines(Stream lines) {
lines.forEach(putInLine);
return this;
}
public Stub endInStream() {
inQueue.end();
return this;
}
public StreamPlus remainingInLines() {
return StreamPlus.from(lines.remainingValues());
}
public StreamPlus recordedInLines() {
return StreamPlus.from(inLines.stream());
}
public void clearInLines() {
inQueue.clear();
}
@Override
public String readln() {
String currentLine;
try {
currentLine = inQueue.take();
inLines.add("" + currentLine);
return currentLine;
} catch (InterruptedException e) {
throw ThrowFuncs.exceptionTransformer.get().apply(e);
}
}
@Override
public String pollln() {
String currentLine = inQueue.poll();
if (currentLine == null)
return null;
inLines.add("" + currentLine);
return currentLine;
}
public void stopRead() {
// Not sure what to do here.
}
}
}
