commit 30bda04ae349b76aa420794bd2a6daa2e79468a1
Author: Marc Baloup <marc.baloup@laposte.net>
Date:   Tue Dec 29 02:23:35 2015 +0100

    Création d'un outil de lecture de log
    
    - Ajout d'un exécutable permettant la lecture en continu d'un fichier
    log avec support de la rotation des fichiers.

diff --git a/.classpath b/.classpath
new file mode 100644
index 0000000..b932b0f
--- /dev/null
+++ b/.classpath
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="lib" path="lib/commons-collections4-4.1.jar">
+		<attributes>
+			<attribute name="javadoc_location" value="jar:platform:/resource/LogViewer/lib/commons-collections4-4.1-javadoc.jar!/"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/.project b/.project
new file mode 100644
index 0000000..fcc21f1
--- /dev/null
+++ b/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>LogViewer</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>
diff --git a/bin/.gitignore b/bin/.gitignore
new file mode 100644
index 0000000..44fde90
--- /dev/null
+++ b/bin/.gitignore
@@ -0,0 +1 @@
+/fr/
diff --git a/src/fr/pandacube/java/logviewer/Main.java b/src/fr/pandacube/java/logviewer/Main.java
new file mode 100644
index 0000000..f5697d6
--- /dev/null
+++ b/src/fr/pandacube/java/logviewer/Main.java
@@ -0,0 +1,137 @@
+package fr.pandacube.java.logviewer;
+
+import java.io.EOFException;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.commons.collections4.queue.CircularFifoQueue;
+
+public class Main {
+	
+	public static final String ANSI_RESET = "\u001B[0m";
+	
+	public static final String ANSI_ERASE_SCREEN = "\u001B[2J";
+	public static final String ANSI_CURSOR_TOP_LEFT = "\u001B[1;1H";
+	
+	
+	
+	public static void main(String[] args) {
+		if (args.length == 0) {
+			outln("1 argument attendu : le fichier à lire.");
+			return;
+		}
+		
+		File f = new File(args[0]);
+		
+		if (!f.exists()) {
+			outln("Le fichier spécifié n'existe pas");
+			return;
+		}
+		
+		if (!f.isFile()) {
+			outln("Le fichier spécifié n'est pas un fichier régulier");
+			return;
+		}
+		
+		CircularFifoQueue<String> lineBuffer = new CircularFifoQueue<String>(100);
+		
+		
+		
+		try {
+			
+			
+			RandomAccessFile reader = new RandomAccessFile(f, "r");
+			try {
+				String line;
+				while ((line = readUTF8LineFromFile(reader)) != null) {
+					lineBuffer.add(line);
+				}
+				
+				
+				out(ANSI_ERASE_SCREEN+ANSI_CURSOR_TOP_LEFT);
+				
+				while (!lineBuffer.isEmpty())
+					outln(lineBuffer.poll());
+				
+				
+				long previousLength = 0;
+				while(true) {
+					if (reader.length() < previousLength) {
+						reader.seek(0);
+					}
+					if ((line = readUTF8LineFromFile(reader)) != null) {
+						outln(line);
+						previousLength = reader.length();
+					}
+					else {
+						Thread.sleep(10);
+					}
+					
+				}
+				
+			} finally {
+				reader.close();
+			}
+			
+			
+		} catch (FileNotFoundException e) {
+			e.printStackTrace();
+		} catch (IOException e) {
+			e.printStackTrace();
+		} catch (InterruptedException e) { }
+		
+		
+		
+		
+		
+	}
+	
+	
+	public static String readUTF8LineFromFile(RandomAccessFile reader) {
+		List<Byte> bytes = new ArrayList<Byte>();
+		
+		byte b;
+		try {
+			for (;;) {
+				b = reader.readByte();
+				if ("\n".getBytes()[0] == b)
+					break;
+				
+				bytes.add(b);
+			}
+			
+		} catch (EOFException e) {
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		
+		
+		byte[] priBytes = new byte[bytes.size()];
+		for (int i=0; i<bytes.size(); i++)
+			priBytes[i] = bytes.get(i);
+		
+		if (priBytes.length > 0)
+			return new String(priBytes);
+		
+		return null;
+	}
+	
+	
+	
+	
+	
+	
+	public static void outln(Object o) {
+		System.out.println(o);
+	}
+	public static void out(Object o) {
+		System.out.print(o);
+	}
+	
+	
+
+}
diff --git a/src/fr/pandacube/java/logviewer/test/Test.java b/src/fr/pandacube/java/logviewer/test/Test.java
new file mode 100644
index 0000000..121c0bc
--- /dev/null
+++ b/src/fr/pandacube/java/logviewer/test/Test.java
@@ -0,0 +1,100 @@
+package fr.pandacube.java.logviewer.test;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.util.Random;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import fr.pandacube.java.logviewer.Main;
+
+/**
+ * Test du logiciel LogViewer.<br/>
+ * 
+ * Lance un Thread qui écrit aléatoirement dans un fichier de la même manière que dans un fichier log.
+ * Ce fichier est réinitialisé pour simuler la rotation des fichiers logs.
+ * 
+ * 
+ * @author Marc
+ *
+ */
+public class Test {
+	
+	
+	private static BufferedWriter wr;
+	
+	public static void main(String[] args) throws Exception {
+		
+		File f = new File("testFile");
+		
+		
+		f.createNewFile();
+		
+		AtomicBoolean terminate = new AtomicBoolean(false);
+		
+		wr = new BufferedWriter(new FileWriter(f));
+		
+		Thread th = new Thread(() -> {
+			
+			try {
+				
+				while(!terminate.get()) {
+					
+					wr.write(randomLine());
+					wr.flush();
+					Thread.sleep(r.nextInt(10));
+					
+					if (r.nextInt(10) == 0) {
+						wr.close();
+						f.delete();
+						f.createNewFile();
+						wr = new BufferedWriter(new FileWriter(f));
+					}
+					
+					
+					
+				}
+				
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+			
+		}, "Testing Thread");
+		
+		th.start();
+		
+		Thread.currentThread().setName("Tested Thread");
+		Main.main(new String[] {"testFile"});
+		
+		terminate.set(true);
+		th.join();
+		
+		wr.close();
+		
+	}
+	
+	
+	
+	
+	
+	
+	
+	
+	
+	private static Random r = new Random();
+	private static char[] chars = new char[] {' ', ' ', ' ', 'a', 'b', 'c', 'd', 'e', 'f', '♪', '♫', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'};
+	
+	public static String randomLine() {
+		int length = r.nextInt(100)+15;
+		String s = "";
+		for (int i=0; i<length; i++)
+			s+=chars[r.nextInt(chars.length)];
+		
+		return s+'\n';
+	}
+	
+	
+	
+	
+	
+}