Upgraded to Java 1.7.

.classpath

@@ -2,7 +2,7 @@
 <classpath>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="src" path="test"/>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
 		<attributes>
 			<attribute name="module" value="true"/>
 			<attribute name="owner.project.facets" value="java"/>
@@ -17,10 +17,10 @@
 	<classpathentry kind="lib" path="lib/UnitTesting/junit-4.12.jar" sourcepath="lib/UnitTesting/junit-4.12-sources.jar"/>
 	<classpathentry kind="lib" path="lib/commons-cli-1.4.jar" sourcepath="lib/commons-cli-1.4-sources.jar"/>
 	<classpathentry kind="lib" path="lib/commons-io-2.7.jar" sourcepath="lib/commons-io-2.7-sources.jar"/>
-	<classpathentry kind="lib" path="lib/commons-lang3-3.11.jar" sourcepath="lib/commons-lang3-3.11-sources.jar"/>
 	<classpathentry kind="lib" path="lib/commons-text-1.9.jar" sourcepath="lib/commons-text-1.9-sources.jar"/>
-	<classpathentry kind="lib" path="lib/devinsy-strings-0.11.3.jar" sourcepath="lib/devinsy-strings-0.11.3-sources.zip"/>
+	<classpathentry kind="lib" path="lib/commons-lang3-3.12.0.jar" sourcepath="lib/commons-lang3-3.12.0-sources.jar"/>
-	<classpathentry kind="lib" path="lib/threeten-extra-1.5.0.jar" sourcepath="lib/threeten-extra-1.5.0-sources.jar"/>
+	<classpathentry kind="lib" path="lib/devinsy-cmdexec-0.17.0.jar" sourcepath="lib/devinsy-cmdexec-0.17.0-sources.zip"/>
-	<classpathentry kind="lib" path="lib/devinsy-cmdexec-0.11.1.jar" sourcepath="lib/devinsy-cmdexec-0.11.1-sources.zip"/>
+	<classpathentry kind="lib" path="lib/devinsy-strings-0.17.0.jar" sourcepath="lib/devinsy-strings-0.17.0-sources.zip"/>
+	<classpathentry kind="lib" path="lib/threeten-extra-1.7.0.jar" sourcepath="lib/threeten-extra-1.7.0-sources.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

.settings/org.eclipse.jdt.core.prefs

@@ -11,9 +11,9 @@ org.eclipse.jdt.core.codeComplete.staticFinalFieldPrefixes=
 org.eclipse.jdt.core.codeComplete.staticFinalFieldSuffixes=
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=11
+org.eclipse.jdt.core.compiler.compliance=17
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -22,7 +22,7 @@ org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
 org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
 org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
 org.eclipse.jdt.core.compiler.release=enabled
-org.eclipse.jdt.core.compiler.source=11
+org.eclipse.jdt.core.compiler.source=17
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false

.settings/org.eclipse.wst.common.project.facet.core.xml

@@ -3,5 +3,5 @@
   <fixed facet="java"/>
   <fixed facet="jst.utility"/>
   <installed facet="jst.utility" version="1.0"/>
-  <installed facet="java" version="11"/>
+  <installed facet="java" version="17"/>
 </faceted-project>

build-appjar.xml

@@ -111,7 +111,7 @@
 			<manifest>
 				<attribute name="Built-By" value="${user.name} using ant" />
 				<attribute name="Built-Date" value="${dist.time}" />
-  		        <attribute name="Main-Class" value = "org.april.logar.LogarLauncher"/>
+  		        <attribute name="Main-Class" value = "fr.devinsy.logar.LogarLauncher"/>
 			</manifest>
 			<fileset dir="${build.classes}" />
             <!--zipfileset dir="${basedir}/lib" includes="${toString:project.libs}" /-->

build.num

@@ -1,3 +1,3 @@
 #Build Number for ANT. Do not edit!
 #Wed Apr 28 18:52:20 CEST 2021
-build.number=2
+build.number=0

build.properties

@@ -1,4 +1,4 @@
 product.name=logar
 product.revision.major=0
-product.revision.minor=1
+product.revision.minor=17
 product.revision.snapshot=

log4j.properties

@@ -3,7 +3,7 @@
 
 # priority setting: DEBUG < INFO < WARN < ERROR
 log4j.rootLogger                      = INFO, console
-log4j.logger.org.april.logar          = INFO
+log4j.logger.fr.devinsy.logar         = INFO
 
 #--
 log4j.appender.console                           = org.apache.log4j.ConsoleAppender

resources/conf/log4j-default.properties

@@ -3,7 +3,7 @@
 
 # priority setting: DEBUG < INFO < WARN < ERROR
 log4j.rootLogger                                   = INFO, stdout
-log4j.logger.org.april.logar                       = INFO
+log4j.logger.fr.devinsy.logar                      = INFO
 
 #--
 log4j.appender.stdout                              = org.apache.log4j.ConsoleAppender

src/fr/devinsy/logar/LogarLauncher.java

@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar;
+package fr.devinsy.logar;
 
 import java.io.File;
 
@@ -25,10 +25,11 @@ import org.apache.log4j.ConsoleAppender;
 import org.apache.log4j.EnhancedPatternLayout;
 import org.apache.log4j.Level;
 import org.apache.log4j.PropertyConfigurator;
-import org.april.logar.cli.LogarCLI;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import fr.devinsy.logar.cli.LogarCLI;
+
 /**
  * The Class LogarLauncher.
  */
@@ -62,7 +63,7 @@ public final class LogarLauncher
         else
         {
             BasicConfigurator.configure(new ConsoleAppender(new EnhancedPatternLayout("%m%n")));
-            org.apache.log4j.Logger.getRootLogger().setLevel(Level.INFO);
+            org.apache.log4j.Logger.getRootLogger().setLevel(Level.OFF);
         }
 
         // Run.

src/fr/devinsy/logar/app/ExtractOption.java

@@ -29,6 +29,13 @@ public enum ExtractOption
     DATETIME,
     USERAGENT;
 
+    /**
+     * Of.
+     *
+     * @param source
+     *            the source
+     * @return the extract option
+     */
     public static ExtractOption of(final String source)
     {
         ExtractOption result;

src/fr/devinsy/logar/app/ExtractOptions.java

@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.app;
+
+import org.apache.commons.lang3.StringUtils;
+
+/**
+ * The Enum DryOption.
+ */
+public class ExtractOptions
+{
+    OnOffOption ip;
+    OnOffOption user;
+    OnOffOption datetime;
+    OnOffOption userAgent;
+
+    /**
+     * Instantiates a new extract options.
+     */
+    public ExtractOptions()
+    {
+        this.ip = OnOffOption.OFF;
+        this.user = OnOffOption.OFF;
+        this.datetime = OnOffOption.OFF;
+        this.userAgent = OnOffOption.OFF;
+    }
+
+    public OnOffOption getDatetime()
+    {
+        return this.datetime;
+    }
+
+    public OnOffOption getIp()
+    {
+        return this.ip;
+    }
+
+    public OnOffOption getUser()
+    {
+        return this.user;
+    }
+
+    public OnOffOption getUserAgent()
+    {
+        return this.userAgent;
+    }
+
+    public void setDatetime(final OnOffOption datetime)
+    {
+        this.datetime = datetime;
+    }
+
+    public void setIp(final OnOffOption ip)
+    {
+        this.ip = ip;
+    }
+
+    public void setUser(final OnOffOption user)
+    {
+        this.user = user;
+    }
+
+    public void setUserAgent(final OnOffOption userAgent)
+    {
+        this.userAgent = userAgent;
+    }
+
+    /**
+     * Of.
+     *
+     * @param source
+     *            the source
+     * @return the extract option
+     */
+    public static ExtractOptions of(final String source)
+    {
+        ExtractOptions result;
+
+        result = new ExtractOptions();
+
+        if (StringUtils.contains(source, "ip"))
+        {
+            result.setIp(OnOffOption.ON);
+        }
+
+        if (StringUtils.contains(source, "remoteuser"))
+        {
+            result.setUser(OnOffOption.ON);
+        }
+
+        if (StringUtils.contains(source, "datetime"))
+        {
+            result.setDatetime(OnOffOption.ON);
+        }
+
+        if (StringUtils.contains(source, "useragent"))
+        {
+            result.setUserAgent(OnOffOption.ON);
+        }
+
+        //
+        return result;
+    }
+}

src/fr/devinsy/logar/app/Logar.java

@@ -29,9 +29,6 @@ import java.util.zip.GZIPOutputStream;
 
 import org.apache.commons.io.IOUtils;
 import org.apache.commons.lang3.StringUtils;
-import org.april.logar.util.Files;
-import org.april.logar.util.FilesUtils;
-import org.april.logar.util.LineIterator;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -39,6 +36,12 @@ import fr.devinsy.logar.app.anonymizer.Anonymizer;
 import fr.devinsy.logar.app.log.Log;
 import fr.devinsy.logar.app.log.LogFile;
 import fr.devinsy.logar.app.log.LogParser;
+import fr.devinsy.logar.stats.UserAgentStator;
+import fr.devinsy.logar.util.Chrono;
+import fr.devinsy.logar.util.Files;
+import fr.devinsy.logar.util.FilesUtils;
+import fr.devinsy.logar.util.LineIterator;
+import fr.devinsy.strings.StringList;
 
 /**
  * The Class Logar.
@@ -115,7 +118,7 @@ public final class Logar
      *            the target
      * @throws IOException
      */
-    public static void archive(final File source, final File target, final DryOption dry) throws IOException
+    public static void archive(final File source, final File target, final OnOffOption dry) throws IOException
     {
         archiveAccessFiles(source, target, dry);
         archiveErrorFiles(source, target, dry);
@@ -128,7 +131,7 @@ public final class Logar
      *            the source
      * @throws IOException
      */
-    public static void archiveAccessFiles(final File source, final File target, final DryOption dry) throws IOException
+    public static void archiveAccessFiles(final File source, final File target, final OnOffOption dry) throws IOException
     {
         if (source == null)
         {
@@ -228,7 +231,7 @@ public final class Logar
      * @throws IOException
      *             Signals that an I/O exception has occurred.
      */
-    public static void archiveErrorFiles(final File source, final File target, final DryOption dry) throws IOException
+    public static void archiveErrorFiles(final File source, final File target, final OnOffOption dry) throws IOException
     {
         if (source == null)
         {
@@ -503,13 +506,13 @@ public final class Logar
      * @throws IOException
      *             Signals that an I/O exception has occurred.
      */
-    public static void extract(final File source, final ExtractOption option) throws IOException
+    public static void extract(final File source, final ExtractOptions options) throws IOException
     {
         if (source == null)
         {
             System.out.println("Undefined source.");
         }
-        else if (option == null)
+        else if (options == null)
         {
             System.out.println("Undefined option.");
         }
@@ -535,26 +538,29 @@ public final class Logar
                         try
                         {
                             Log log = LogParser.parseAccessLog(line);
-                            String extract;
+
-                            switch (option)
+                            StringList extract = new StringList();
+                            if (options.getIp().isOn())
                             {
-                                case IP:
+                                extract.append(log.getIp());
-                                    extract = log.getIp();
-                                break;
-
-                                case DATETIME:
-                                    extract = log.getDatetimeValue();
-                                break;
-
-                                case USERAGENT:
-                                    extract = log.getUserAgent();
-                                break;
-
-                                default:
-                                    extract = null;
                             }
 
-                            System.out.println(extract);
+                            if (options.getUser().isOn())
+                            {
+                                extract.append(log.getUser());
+                            }
+
+                            if (options.getDatetime().isOn())
+                            {
+                                extract.append(log.getDatetime());
+                            }
+
+                            if (options.getUserAgent().isOn())
+                            {
+                                extract.append(log.getUserAgent());
+                            }
+
+                            System.out.println(extract.toStringSeparatedBy(" "));
                         }
                         catch (IllegalArgumentException exception)
                         {
@@ -606,6 +612,113 @@ public final class Logar
         }
     }
 
+    /**
+     * Stats user agents.
+     *
+     * @param source
+     *            the source
+     */
+    public static void statUserAgents(final File source)
+    {
+        Files files = FilesUtils.searchEndingWith(source, ".log", ".log.gz").keepFileType().sortByName();
+
+        for (File file : files)
+        {
+            statUserAgentsForFile(file);
+        }
+    }
+
+    /**
+     * Stat user agents for file.
+     *
+     * @param file
+     *            the file
+     */
+    public static void statUserAgentsForFile(final File file)
+    {
+        if (file == null)
+        {
+            throw new IllegalArgumentException("Null parameter.");
+        }
+        else if (!file.isFile())
+        {
+            throw new IllegalArgumentException("Parameter is not a file.");
+        }
+        else
+        {
+            System.out.println("== Stat UserAgents for [" + file.getName() + "]");
+
+            int lineCount = 0;
+            int badLineCount = 0;
+            try
+            {
+                UserAgentStator stator = new UserAgentStator();
+                LineIterator iterator = new LineIterator(file);
+                Chrono chrono = new Chrono().start();
+                long lastDuration = 0;
+                while (iterator.hasNext())
+                {
+                    String line = iterator.next();
+                    lineCount += 1;
+
+                    if ((chrono.duration() % 60 == 0) && (chrono.duration() != lastDuration))
+                    {
+                        lastDuration = chrono.duration();
+                        System.out.println(chrono.format() + " line counter " + lineCount);
+                    }
+
+                    try
+                    {
+                        Log log = LogParser.parseAccessLog(line);
+                        stator.putLog(log);
+                    }
+                    catch (IllegalArgumentException exception)
+                    {
+                        System.out.println("Bad format line: " + line);
+                        badLineCount += 1;
+                        exception.printStackTrace();
+                    }
+                    catch (DateTimeParseException exception)
+                    {
+                        System.out.println("Bad datetime format: " + line);
+                        badLineCount += 1;
+                    }
+                }
+
+                //
+                System.out.println("Log count         =" + stator.getLogCount());
+                System.out.println("Ip count          =" + stator.getIps().size());
+                System.out.println("UserAgent count   =" + stator.getUserAgents().size());
+                System.out.println("IpUserAgent count =" + stator.getIpUserAgents().size());
+
+                System.out.println("out=" + file.getCanonicalFile().getParentFile());
+
+                stator.saveIpList(new File(file.getParentFile(), "stator-ip.list"));
+                stator.saveUserAgentList(new File(file.getParentFile(), "stator-ua.list"));
+                stator.saveIpUserAgentList(new File(file.getParentFile(), "stator-ipua.list"));
+
+                stator.shrink();
+                System.out.println("UserAgent count   =" + stator.getUserAgents().size());
+                System.out.println("IpUserAgent count =" + stator.getIpUserAgents().size());
+                stator.saveUserAgentList(new File(file.getParentFile(), "stator-ua-short.list"));
+                stator.saveIpUserAgentList(new File(file.getParentFile(), "stator-ipua-short.list"));
+
+                stator.computeIpLinkCountForUserAgent();
+                stator.saveUserAgentLinkCount(new File(file.getParentFile(), "stator-stats.list"));
+            }
+            catch (IOException exception)
+            {
+                System.err.println("Error with file [" + file.getAbsolutePath() + "]");
+                exception.printStackTrace();
+            }
+
+            if (badLineCount > 0)
+            {
+                System.out.println("Bad line count: " + badLineCount + "/" + lineCount);
+            }
+        }
+    }
+
     /**
      * Check concate.
      *

src/fr/devinsy/logar/app/OnOffOption.java

@@ -21,7 +21,7 @@ package fr.devinsy.logar.app;
 /**
  * The Enum DryOption.
  */
-public enum DryOption
+public enum OnOffOption
 {
     ON,
     OFF;

src/fr/devinsy/logar/app/anonymizer/Anonymizer.java

@@ -29,12 +29,12 @@ import java.util.zip.GZIPOutputStream;
 
 import org.apache.commons.io.IOUtils;
 import org.apache.commons.lang3.StringUtils;
-import org.april.logar.util.LineIterator;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import fr.devinsy.logar.app.log.Log;
 import fr.devinsy.logar.app.log.LogParser;
+import fr.devinsy.logar.util.LineIterator;
 
 /**
  * The Class Anonymizer.
@@ -119,6 +119,16 @@ public final class Anonymizer
                             // anon.getUser(), anon.getDatetime());
                             // logger.info("anon={}", anon);
 
+                            // System.out.println("\\\\\\" + line);
+                            // System.out.println("///" + anon.getLine());
+
+                            // String[] tokens = log.getUserAgent().split("[
+                            // ()\\[\\]/]");
+                            // for (String token : tokens)
+                            // {
+                            // out.println(token);
+                            // }
+
                             // Make a check.
                             if (StringUtils.equals(line, anon.getLine()))
                             {
@@ -158,7 +168,7 @@ public final class Anonymizer
     }
 
     /**
-     * Anonymize.
+     * Anonymize access.
      *
      * @param log
      *            the log
@@ -168,6 +178,42 @@ public final class Anonymizer
     {
         Log result;
 
+        result = new Log(log);
+
+        //
+        String anonIp = this.map.anonymizeIp(log.getIp());
+        result.setIp(anonIp);
+
+        //
+        String refererAnon = log.getReferer().replace(log.getIp(), result.getIp());
+        result.setReferer(refererAnon);
+
+        //
+        String anonUser = this.map.anonymizeUser(log.getUser());
+        result.setUser(anonUser);
+
+        //
+        String userAgentAnon = UserAgentGenerator.anonymize(log.getUserAgent());
+        result.setUserAgent(userAgentAnon);
+
+        //
+        result.concateAccessLog();
+
+        //
+        return result;
+    }
+
+    /**
+     * Anonymize.
+     *
+     * @param log
+     *            the log
+     * @return the log
+     */
+    public Log anonymizeAccessSimple(final Log log)
+    {
+        Log result;
+
         //
         String anonIp = this.map.anonymizeIp(log.getIp());
         String line = log.getLine().replace(log.getIp(), anonIp);

src/fr/devinsy/logar/app/anonymizer/Ipv4Generator.java

@@ -24,14 +24,14 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * The Class RandomIpv4Generator.
+ * The Class Ipv4Generator.
  */
 public final class Ipv4Generator
 {
     private static Logger logger = LoggerFactory.getLogger(Ipv4Generator.class);
 
     /**
-     * Instantiates a new random ipv 4 generator.
+     * Instantiates a new ipv 4 generator.
      */
     private Ipv4Generator()
     {

src/fr/devinsy/logar/app/anonymizer/Ipv6Generator.java

@@ -24,14 +24,14 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * The Class RandomIpv6Generator.
+ * The Class Ipv6Generator.
  */
 public final class Ipv6Generator
 {
     private static Logger logger = LoggerFactory.getLogger(Ipv6Generator.class);
 
     /**
-     * Instantiates a new random ipv 6 generator.
+     * Instantiates a new ipv 6 generator.
      */
     private Ipv6Generator()
     {

src/fr/devinsy/logar/app/anonymizer/UserAgentGenerator.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.app.anonymizer;
+
+import org.apache.commons.lang3.RegExUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The Class UserAgentGenerator.
+ */
+public final class UserAgentGenerator
+{
+    private static Logger logger = LoggerFactory.getLogger(UserAgentGenerator.class);
+
+    /**
+     * Instantiates a new user agent generator.
+     */
+    private UserAgentGenerator()
+    {
+    }
+
+    /**
+     * Shrink.
+     *
+     * @param source
+     *            the source
+     * @return the string
+     */
+    public static String anonymize(final String source)
+    {
+        String result;
+
+        if (source == null)
+        {
+            result = null;
+        }
+        else if (source.equals("-"))
+        {
+            result = source;
+        }
+        else
+        {
+            // StringBuffer buffer = new StringBuffer(source.length());
+            // String targets = "./[]_-0123456789";
+            // for (int index = 0; index < source.length(); index++)
+            // {
+            // char letter = source.charAt(index);
+            // if (!StringUtils.containsAny(targets, letter))
+            // {
+            // buffer.append(letter);
+            // }
+            // }
+            //
+            result = source;
+            result = RegExUtils.replaceAll(result, "\\[.+\\]", "");
+            result = RegExUtils.replaceAll(result, "https?://[^\\s\\)\\],;]+", "");
+            result = RegExUtils.replaceAll(result, "\\(\\)", "");
+            result = RegExUtils.replaceAll(result, "(B|b)uild ?[~0-9a-zA-Z/\\.-_@]+", "build");
+            result = RegExUtils.replaceAll(result, "\\d{4}/\\d{2}/\\d{2}", "");
+            result = RegExUtils.replaceAll(result, "(/|:|-|@)?[0-9][~0-9a-zA-Z\\.-_]+", "");
+            // result = StringUtils.replaceChars(result, ".[]_-0123456789", "");
+
+            result = StringUtils.rightPad(result, source.length());
+        }
+
+        //
+        return result;
+    }
+}

src/fr/devinsy/logar/app/anonymizer/UserGenerator.java

@@ -23,14 +23,14 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * The Class RandomUserGenerator.
+ * The Class UserGenerator.
  */
 public final class UserGenerator
 {
     private static Logger logger = LoggerFactory.getLogger(UserGenerator.class);
 
     /**
-     * Instantiates a new random user generator.
+     * Instantiates a new user generator.
      */
     private UserGenerator()
     {

src/fr/devinsy/logar/app/log/LogComparator.java

@@ -21,7 +21,7 @@ package fr.devinsy.logar.app.log;
 import java.time.LocalDateTime;
 import java.util.Comparator;
 
-import org.april.logar.util.CompareUtils;
+import fr.devinsy.logar.util.CompareUtils;
 
 /**
  * The Class LogComparator.

src/fr/devinsy/logar/app/log/LogFile.java

@@ -26,12 +26,12 @@ import java.io.PrintWriter;
 import java.util.zip.GZIPOutputStream;
 
 import org.apache.commons.io.IOUtils;
-import org.april.logar.util.LineIterator;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import fr.devinsy.cmdexec.CmdExecException;
 import fr.devinsy.cmdexec.CmdExecUtils;
+import fr.devinsy.logar.util.LineIterator;
 
 /**
  * The Class LogFile.

src/fr/devinsy/logar/cli/LogarCLI.java

@@ -16,18 +16,18 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar.cli;
+package fr.devinsy.logar.cli;
 
 import java.io.File;
 import java.time.LocalDateTime;
 
-import org.april.logar.util.BuildInformation;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import fr.devinsy.logar.app.DryOption;
+import fr.devinsy.logar.app.ExtractOptions;
-import fr.devinsy.logar.app.ExtractOption;
 import fr.devinsy.logar.app.Logar;
+import fr.devinsy.logar.app.OnOffOption;
+import fr.devinsy.logar.util.BuildInformation;
 import fr.devinsy.strings.StringList;
 
 /**
@@ -56,14 +56,15 @@ public final class LogarCLI
         message.appendln("Usage:");
         message.appendln("    logar [ -h | -help | --help ]");
         message.appendln("    logar [ -v | -version | --version ]");
-        message.appendln("    logar anonymize      fileordirectory [mapfile]    anonymize ip and user");
+        message.appendln("    logar anonymize        <fileordirectory> [<mapfile>]  anonymize ip and user");
-        message.appendln("    logar archive [-dry] source target                archive previous month from /var/log/nginx/ tree");
+        message.appendln("    logar archive [-dry]   <source> <target>              archive previous month from /var/log/nginx/ tree");
-        message.appendln("    logar check          fileordirectory              check line format in log file");
+        message.appendln("    logar check            <fileordirectory>              check line format in log files");
-        message.appendln("    logar checksort      fileordirectory              check sort in log file");
+        message.appendln("    logar checksort        <fileordirectory>              check sort in log files");
-        message.appendln("    logar sort           fileordirectory              sort log files by datetime");
+        message.appendln("    logar extract <fields> <fileordirectory>              extract one or more fields (ip,user,datetime,useragent) from log files");
-        message.appendln("    logar testconcate    fileordirectory              test line concate in log file");
+        message.appendln("    logar sort             <fileordirectory>              sort log files by datetime");
+        message.appendln("    logar testconcate      <fileordirectory>              test line concate in log files");
 
-        logger.info(message.toString());
+        System.out.println(message.toString());
     }
 
     /**
@@ -75,7 +76,7 @@ public final class LogarCLI
 
         message.appendln(BuildInformation.instance().version());
 
-        logger.info(message.toString());
+        System.out.println(message.toString());
     }
 
     /**
@@ -203,14 +204,14 @@ public final class LogarCLI
                 File source = new File(args[1]);
                 File target = new File(args[2]);
 
-                Logar.archive(source, target, DryOption.OFF);
+                Logar.archive(source, target, OnOffOption.OFF);
             }
             else if (isMatching(args, "archive", "-dry", "\\s*\\S+\\s*", "\\s*\\S+\\s*"))
             {
                 File source = new File(args[2]);
                 File target = new File(args[3]);
 
-                Logar.archive(source, target, DryOption.ON);
+                Logar.archive(source, target, OnOffOption.ON);
             }
             else if (isMatching(args, "check", "\\s*\\S+\\s*"))
             {
@@ -224,12 +225,12 @@ public final class LogarCLI
 
                 Logar.checkSort(source);
             }
-            else if (isMatching(args, "extract", "\\s*(ip|datetime|useragent)\\s*", "\\s*\\S+\\s*"))
+            else if (isMatching(args, "extract", "\\s*((ip)?(,)?(remoteuser)?(,)?(datetime)?(,)?(useragent)?)\\s*", "\\s*\\S+\\s*"))
             {
-                ExtractOption token = ExtractOption.of(args[1]);
+                ExtractOptions options = ExtractOptions.of(args[1]);
                 File source = new File(args[2]);
 
-                Logar.extract(source, token);
+                Logar.extract(source, options);
             }
             else if (isMatching(args, "sort", "\\s*\\S+\\s*"))
             {
@@ -237,6 +238,12 @@ public final class LogarCLI
 
                 Logar.sort(source);
             }
+            else if (isMatching(args, "statuseragent", "\\s*\\S+\\s*"))
+            {
+                File source = new File(args[1]);
+
+                Logar.statUserAgents(source);
+            }
             else if (isMatching(args, "testconcate", "\\s*\\S+\\s*"))
             {
                 File source = new File(args[1]);

src/fr/devinsy/logar/cli/LogarCLIException.java

@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar.cli;
+package fr.devinsy.logar.cli;
 
 import fr.devinsy.logar.app.LogarException;
 

src/fr/devinsy/logar/stats/Ip.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.stats;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The Class IpStat.
+ */
+public final class Ip
+{
+    private static Logger logger = LoggerFactory.getLogger(Ip.class);
+
+    private String value;
+    private long count;
+
+    /**
+     * Instantiates a new ip stat.
+     *
+     * @param ip
+     *            the ip
+     */
+    public Ip(final String ip)
+    {
+        this.value = ip;
+        this.count = 0;
+    }
+
+    public long getCount()
+    {
+        return this.count;
+    }
+
+    public String getValue()
+    {
+        return this.value;
+    }
+
+    public void inc()
+    {
+        this.count += 1;
+    }
+}

src/fr/devinsy/logar/stats/IpUserAgent.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.stats;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The Class UserAgentStat.
+ */
+public final class IpUserAgent
+{
+    private static Logger logger = LoggerFactory.getLogger(IpUserAgent.class);
+
+    private String ip;
+    private String userAgent;
+    private long count;
+
+    /**
+     * Instantiates a new user agent stat.
+     *
+     * @param ip
+     *            the ip
+     * @param userAgent
+     *            the user agent
+     */
+    public IpUserAgent(final String ip, final String userAgent)
+    {
+        this.ip = ip;
+        this.userAgent = userAgent;
+        this.count = 0;
+    }
+
+    public long getCount()
+    {
+        return this.count;
+    }
+
+    public String getIp()
+    {
+        return this.ip;
+    }
+
+    public String getUserAgent()
+    {
+        return this.userAgent;
+    }
+
+    public void inc()
+    {
+        this.count += 1;
+    }
+
+}

src/fr/devinsy/logar/stats/IpUserAgentList.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.stats;
+
+import java.util.ArrayList;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The Class IpUserAgentStatList.
+ */
+public final class IpUserAgentList extends ArrayList<IpUserAgent>
+{
+    private static final long serialVersionUID = 385645188228694639L;
+
+    private static Logger logger = LoggerFactory.getLogger(IpUserAgentList.class);
+
+    /**
+     * Instantiates a new ip user agent stats.
+     */
+    public IpUserAgentList()
+    {
+        super();
+    }
+}

src/fr/devinsy/logar/stats/IpUserAgents.java

@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.stats;
+
+import java.util.HashMap;
+import java.util.Iterator;
+
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The Class IpUserAgentStats.
+ */
+public final class IpUserAgents implements Iterable<IpUserAgent>
+{
+    private static final long serialVersionUID = -3011532898476944152L;
+
+    private static Logger logger = LoggerFactory.getLogger(IpUserAgents.class);
+
+    private HashMap<String, IpUserAgent> data;
+
+    /**
+     * Instantiates a new ip user agent stats.
+     */
+    public IpUserAgents()
+    {
+        this.data = new HashMap<String, IpUserAgent>();
+    }
+
+    public void clear()
+    {
+        this.data.clear();
+    }
+
+    public int countByUserAgent(final String userAgent)
+    {
+        int result;
+
+        result = 0;
+
+        for (IpUserAgent ipUserAgent : this.data.values())
+        {
+            if (StringUtils.equals(ipUserAgent.getUserAgent(), userAgent))
+            {
+                result += 1;
+            }
+        }
+
+        //
+        return result;
+    }
+
+    /**
+     * Gets the by user agent.
+     *
+     * @param userAgent
+     *            the user agent
+     * @return the by user agent
+     */
+    public IpUserAgentList getByUserAgent(final String userAgent)
+    {
+        IpUserAgentList result;
+
+        result = new IpUserAgentList();
+
+        for (IpUserAgent ipUserAgent : this.data.values())
+        {
+            if (StringUtils.equals(ipUserAgent.getUserAgent(), userAgent))
+            {
+                result.add(ipUserAgent);
+            }
+        }
+
+        //
+        return result;
+    }
+
+    /* (non-Javadoc)
+     * @see java.lang.Iterable#iterator()
+     */
+    @Override
+    public Iterator<IpUserAgent> iterator()
+    {
+        Iterator<IpUserAgent> result;
+
+        result = this.data.values().iterator();
+
+        //
+        return result;
+    }
+
+    public void put(final IpUserAgent ipUserAgent)
+    {
+        this.data.put(ipUserAgent.getIp() + ipUserAgent.getUserAgent(), ipUserAgent);
+    }
+
+    /**
+     * Put.
+     *
+     * @param ip
+     *            the ip
+     * @param userAgent
+     *            the user agent
+     */
+    public void put(final String ip, final String userAgent)
+    {
+        IpUserAgent stat = this.data.get(ip + userAgent);
+        if (stat == null)
+        {
+            stat = new IpUserAgent(ip, userAgent);
+            this.data.put(ip + userAgent, stat);
+        }
+
+        stat.inc();
+    }
+
+    public int size()
+    {
+        int result;
+
+        result = this.data.size();
+
+        //
+        return result;
+    }
+}

src/fr/devinsy/logar/stats/Ips.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.stats;
+
+import java.util.HashMap;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The Class IpStats.
+ */
+public final class Ips extends HashMap<String, Ip>
+{
+    private static final long serialVersionUID = -8411746796941831991L;
+
+    private static Logger logger = LoggerFactory.getLogger(Ips.class);
+
+    /**
+     * Instantiates a new ip stats.
+     */
+    public Ips()
+    {
+        super();
+    }
+
+    public void put(final String ip)
+    {
+        Ip stat = get(ip);
+        if (stat == null)
+        {
+            stat = new Ip(ip);
+            this.put(ip, stat);
+        }
+
+        stat.inc();
+    }
+}

src/fr/devinsy/logar/stats/UserAgent.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.stats;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The Class UserAgentStat.
+ */
+public final class UserAgent
+{
+    private static Logger logger = LoggerFactory.getLogger(UserAgent.class);
+
+    private String value;
+    private long count;
+    private long ipLinkCount;
+
+    /**
+     * Instantiates a new user agent stat.
+     *
+     * @param ip
+     *            the ip
+     * @param userAgent
+     *            the user agent
+     */
+    public UserAgent(final String userAgent)
+    {
+        this.value = userAgent;
+        this.count = 0;
+        this.ipLinkCount = 0;
+    }
+
+    public long getCount()
+    {
+        return this.count;
+    }
+
+    public long getIpLinkCount()
+    {
+        return this.ipLinkCount;
+    }
+
+    public String getValue()
+    {
+        return this.value;
+    }
+
+    public void inc()
+    {
+        this.count += 1;
+    }
+
+    public void setIpLinkCount(final long ipLinkCount)
+    {
+        this.ipLinkCount = ipLinkCount;
+    }
+
+}

src/fr/devinsy/logar/stats/UserAgentStator.java

@@ -0,0 +1,232 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.stats;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.PrintWriter;
+
+import org.apache.commons.io.IOUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import fr.devinsy.logar.app.log.Log;
+import fr.devinsy.logar.util.Chrono;
+import fr.devinsy.strings.StringsUtils;
+
+/**
+ * The Class UserAgentStator.
+ */
+public final class UserAgentStator
+{
+    private static Logger logger = LoggerFactory.getLogger(UserAgentStator.class);
+
+    private long logCount;
+    private Ips ips;
+    private UserAgents userAgents;
+    private IpUserAgents ipUserAgents;
+
+    /**
+     * Instantiates a new user agent stator.
+     */
+    public UserAgentStator()
+    {
+        this.logCount = 0;
+        this.ips = new Ips();
+        this.userAgents = new UserAgents();
+        this.ipUserAgents = new IpUserAgents();
+    }
+
+    /**
+     * Compute ip link count for user agent.
+     */
+    public void computeIpLinkCountForUserAgent()
+    {
+        int index = 0;
+        Chrono chrono = new Chrono().start();
+        long lastDuration = 0;
+        for (UserAgent userAgent : this.userAgents.values())
+        {
+            index += 1;
+
+            if ((chrono.duration() % 60 == 0) && (chrono.duration() != lastDuration))
+            {
+                lastDuration = chrono.duration();
+                System.out.println(chrono.format() + " IpLinkCount " + index + "/" + this.userAgents.size());
+            }
+
+            long count = this.ipUserAgents.countByUserAgent(userAgent.getValue());
+
+            userAgent.setIpLinkCount(count);
+        }
+    }
+
+    public Ips getIps()
+    {
+        return this.ips;
+    }
+
+    public IpUserAgents getIpUserAgents()
+    {
+        return this.ipUserAgents;
+    }
+
+    public long getLogCount()
+    {
+        return this.logCount;
+    }
+
+    public UserAgents getUserAgents()
+    {
+        return this.userAgents;
+    }
+
+    /**
+     * Adds the log.
+     *
+     * @param log
+     *            the log
+     */
+    public void putLog(final Log log)
+    {
+        String userAgent = log.getUserAgent().trim();
+
+        this.logCount += 1;
+        this.ips.put(log.getIp());
+        this.userAgents.put(userAgent);
+        this.ipUserAgents.put(log.getIp(), userAgent);
+    }
+
+    public void saveIpList(final File target)
+    {
+        PrintWriter out = null;
+        try
+        {
+            out = new PrintWriter(new FileOutputStream(target));
+
+            for (Ip ip : this.ips.values())
+            {
+                out.println(ip.getValue());
+            }
+        }
+        catch (FileNotFoundException exception)
+        {
+            exception.printStackTrace();
+        }
+        finally
+        {
+            IOUtils.closeQuietly(out);
+        }
+    }
+
+    public void saveIpUserAgentList(final File target)
+    {
+        PrintWriter out = null;
+        try
+        {
+            out = new PrintWriter(new FileOutputStream(target));
+
+            for (IpUserAgent userAgent : this.ipUserAgents)
+            {
+                out.println(userAgent.getIp() + " " + userAgent.getUserAgent());
+            }
+        }
+        catch (FileNotFoundException exception)
+        {
+            exception.printStackTrace();
+        }
+        finally
+        {
+            IOUtils.closeQuietly(out);
+        }
+    }
+
+    public void saveUserAgentLinkCount(final File target)
+    {
+        PrintWriter out = null;
+        try
+        {
+            out = new PrintWriter(new FileOutputStream(target));
+            for (UserAgent userAgent : this.userAgents.values())
+            {
+                out.println(userAgent.getIpLinkCount() + " " + userAgent.getCount() + " " + userAgent.getValue());
+            }
+        }
+        catch (FileNotFoundException exception)
+        {
+            exception.printStackTrace();
+        }
+        finally
+        {
+            IOUtils.closeQuietly(out);
+        }
+    }
+
+    public void saveUserAgentList(final File target)
+    {
+        PrintWriter out = null;
+        try
+        {
+            out = new PrintWriter(new FileOutputStream(target));
+
+            for (UserAgent userAgent : this.userAgents.values())
+            {
+                out.println(userAgent.getValue());
+            }
+        }
+        catch (FileNotFoundException exception)
+        {
+            exception.printStackTrace();
+        }
+        finally
+        {
+            IOUtils.closeQuietly(out);
+        }
+    }
+
+    public void shrink()
+    {
+        String[] tokens = { "android", "apple", "chrome", "iphone", "linux", "mac", "mozilla", "opera", "safari", "thunderbird" };
+
+        //
+        UserAgents userAgentBis = new UserAgents();
+        for (UserAgent userAgent : this.userAgents.values())
+        {
+            if (StringsUtils.containsAnyIgnoreCase(userAgent.getValue(), tokens))
+            {
+                userAgentBis.put(userAgent);
+            }
+        }
+        this.userAgents.clear();
+        this.userAgents = userAgentBis;
+
+        //
+        IpUserAgents ipUserAgentBis = new IpUserAgents();
+        for (IpUserAgent ipUserAgent : this.ipUserAgents)
+        {
+            if (StringsUtils.containsAnyIgnoreCase(ipUserAgent.getUserAgent(), tokens))
+            {
+                ipUserAgentBis.put(ipUserAgent);
+            }
+        }
+        this.ipUserAgents.clear();
+        this.ipUserAgents = ipUserAgentBis;
+    }
+}

src/fr/devinsy/logar/stats/UserAgents.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.stats;
+
+import java.util.HashMap;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The Class UserAgents.
+ */
+public final class UserAgents extends HashMap<String, UserAgent>
+{
+    private static final long serialVersionUID = -7943808966632477322L;
+
+    private static Logger logger = LoggerFactory.getLogger(UserAgents.class);
+
+    /**
+     * Instantiates a new user agents.
+     */
+    public UserAgents()
+    {
+        super();
+    }
+
+    public void put(final String userAgent)
+    {
+        UserAgent stat = get(userAgent);
+        if (stat == null)
+        {
+            stat = new UserAgent(userAgent);
+            this.put(userAgent, stat);
+        }
+
+        stat.inc();
+    }
+
+    public void put(final UserAgent userAgent)
+    {
+        this.put(userAgent.getValue(), userAgent);
+    }
+}

src/fr/devinsy/logar/util/BuildInformation.java

@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar.util;
+package fr.devinsy.logar.util;
 
 import java.io.IOException;
 import java.net.URL;

src/fr/devinsy/logar/util/Chrono.java

@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of Logar, simple tool to manage http log files.
+ * 
+ * Logar is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * Logar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.logar.util;
+
+import java.time.Duration;
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
+
+/**
+ * The Class Chrono.
+ */
+public class Chrono
+{
+    private LocalDateTime start;
+
+    /**
+     * Instantiates a new time keeper.
+     */
+    public Chrono()
+    {
+        reset();
+    }
+
+    /**
+     * Duration.
+     *
+     * @return the long
+     */
+    public long duration()
+    {
+        long result;
+
+        result = LocalDateTime.now().toEpochSecond(ZoneOffset.UTC) - this.start.toEpochSecond(ZoneOffset.UTC);
+
+        //
+        return result;
+    }
+
+    /**
+     * Format.
+     *
+     * @return the string
+     */
+    public String format()
+    {
+        String result;
+
+        if (this.start == null)
+        {
+            result = "n/a";
+        }
+        else
+        {
+            LocalDateTime end = LocalDateTime.now();
+            Duration duration = Duration.between(this.start, end);
+
+            result = String.format("%02d:%02d:%02d", duration.getSeconds() / 60 / 60, duration.getSeconds() / 60, duration.getSeconds() % 60);
+        }
+
+        //
+        return result;
+    }
+
+    /**
+     * Reset.
+     */
+    public void reset()
+    {
+        this.start = null;
+    }
+
+    /**
+     * Start.
+     */
+    public Chrono start()
+    {
+        Chrono result;
+
+        this.start = LocalDateTime.now();
+
+        result = this;
+
+        //
+        return result;
+    }
+
+    /**
+     * To string.
+     *
+     * @return the string
+     */
+    @Override
+    public String toString()
+    {
+        String result;
+
+        result = format();
+
+        //
+        return result;
+    }
+}

src/fr/devinsy/logar/util/CompareUtils.java

@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar.util;
+package fr.devinsy.logar.util;
 
 import java.time.LocalDateTime;
 import java.util.regex.Matcher;

src/fr/devinsy/logar/util/FileComparator.java

@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar.util;
+package fr.devinsy.logar.util;
 
 import java.io.File;
 import java.util.Comparator;

src/fr/devinsy/logar/util/Files.java

@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar.util;
+package fr.devinsy.logar.util;
 
 import java.io.File;
 import java.util.ArrayList;

src/fr/devinsy/logar/util/FilesUtils.java

@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar.util;
+package fr.devinsy.logar.util;
 
 import java.io.File;
 import java.util.regex.Pattern;

src/fr/devinsy/logar/util/LineIterator.java

@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar.util;
+package fr.devinsy.logar.util;
 
 import java.io.BufferedReader;
 import java.io.File;

test/fr/devinsy/logar/app/TestFoo.java

@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Logar.  If not, see <http://www.gnu.org/licenses/>.
  */
-package org.april.logar.app;
+package fr.devinsy.logar.app;
 
 import org.apache.log4j.BasicConfigurator;
 import org.apache.log4j.Level;