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| <h2>Gradle Task</h2> | |
| <b>ProGuard</b> can be run as a task in the Java-based build tool Gradle | |
| (version 2.1 or higher). | |
| <p> | |
| Before you can use the <code>proguard</code> task, you have to make sure | |
| Gradle can find it in its class path at build time. One way is to add the | |
| following line to your <code>build.gradle</code> file: | |
| <p> | |
| <pre> | |
| buildscript { | |
| repositories { | |
| flatDir dirs: '/usr/local/java/proguard/lib' | |
| } | |
| dependencies { | |
| classpath ':proguard:' | |
| } | |
| } | |
| </pre> | |
| <p> | |
| Please make sure the class path is set correctly for your system. | |
| <p> | |
| You can then define a task: | |
| <p> | |
| <pre> | |
| task myProguardTask(type: proguard.gradle.ProGuardTask) { | |
| ..... | |
| } | |
| </pre> | |
| <p> | |
| The embedded configuration is much like a standard ProGuard configuration. | |
| Notable similarities and differences: | |
| <ul> | |
| <li>Like in ProGuard-style configurations, we're using all lower-case names | |
| for the settings.</li> | |
| <li>The options don't have a dash as prefix.</li> | |
| <li>Arguments typically have quotes.</li> | |
| <li>Some settings are specified as named arguments.</li> | |
| </ul> | |
| <p> | |
| You can find some sample build files in the <code>examples/gradle</code> | |
| directory of the ProGuard distribution. | |
| <p> | |
| If you prefer a more verbose configuration derived from the Ant task, you can | |
| import the Ant task as a <a href="#anttask">Gradle task</a>. | |
| <h2><a name="proguard">Settings</a></h2> | |
| The ProGuard task supports the following settings in its closure: | |
| <dl> | |
| <dt><a name="configuration_attribute"><code><b>configuration</b></code></a> | |
| <a href="#file"><i>files</i></a></dt> | |
| <dd>Read and merge options from the given ProGuard-style configuration | |
| files. The files are resolved and parsed lazily, during the execution | |
| phase.</dd> | |
| <dt><a href="usage.html#injars"><code><b>injars</b></code></a> | |
| <a href="#classpath"><i>class_path</i></a></dt> | |
| <dd>Specifies the program jars (or aars, wars, ears, zips, apks, or | |
| directories). The files are resolved and read lazily, during the execution | |
| phase.</dd> | |
| <dt><a href="usage.html#outjars"><code><b>outjars</b></code></a> | |
| <a href="#classpath"><i>class_path</i></a></dt> | |
| <dd>Specifies the names of the output jars (or aars, wars, ears, zips, apks, or | |
| directories). The files are resolved and written lazily, during the | |
| execution phase.</dd> | |
| <dt><a href="usage.html#libraryjars"><code><b>libraryjars</b></code></a> | |
| <a href="#classpath"><i>class_path</i></a></dt> | |
| <dd>Specifies the library jars (or aars, wars, ears, zips, apks, or | |
| directories). The files are resolved and read lazily, during the execution | |
| phase.</dd> | |
| <dt><a href="usage.html#skipnonpubliclibraryclasses"><code><b>skipnonpubliclibraryclasses</b></code></a></dt> | |
| <dd>Ignore non-public library classes.</dd> | |
| <dt><a href="usage.html#dontskipnonpubliclibraryclassmembers"><code><b>dontskipnonpubliclibraryclassmembers</b></code></a></dt> | |
| <dd>Don't ignore package visible library class members.</dd> | |
| <dt><a href="usage.html#keepdirectories"><code><b>keepdirectories</b></code></a> | |
| ['<a href="usage.html#filefilters"><i>directory_filter</i></a>']</dt> | |
| <dd>Keep the specified directories in the output jars (or aars, wars, ears, | |
| zips, apks, or directories).</dd> | |
| <dt><a href="usage.html#target"><code><b>target</b></code></a> | |
| '<i>version</i>'</dt> | |
| <dd>Set the given version number in the processed classes.</dd> | |
| <dt><a href="usage.html#forceprocessing"><code><b>forceprocessing</b></code></a></dt> | |
| <dd>Process the input, even if the output seems up to date.</dd> | |
| <dt><a href="usage.html#keep"><code><b>keep</b></code></a> | |
| [<a href="#keepmodifier"><i>modifier</i>,...</a>] | |
| <a href="#classspecification"><i>class_specification</i></a></dt> | |
| <dd>Preserve the specified classes <i>and</i> class members.</dd> | |
| <dt><a href="usage.html#keepclassmembers"><code><b>keepclassmembers</b></code></a> | |
| [<a href="#keepmodifier"><i>modifier</i>,...</a>] | |
| <a href="#classspecification"><i>class_specification</i></a></dt> | |
| <dd>Preserve the specified class members, if their classes are preserved as | |
| well.</dd> | |
| <dt><a href="usage.html#keepclasseswithmembers"><code><b>keepclasseswithmembers</b></code></a> | |
| [<a href="#keepmodifier"><i>modifier</i>,...</a>] | |
| <a href="#classspecification"><i>class_specification</i></a></dt> | |
| <dd>Preserve the specified classes <i>and</i> class members, if all of the | |
| specified class members are present.</dd> | |
| <dt><a href="usage.html#keepnames"><code><b>keepnames</b></code></a> | |
| <a href="#classspecification"><i>class_specification</i></a></dt> | |
| <dd>Preserve the names of the specified classes <i>and</i> class members (if | |
| they aren't removed in the shrinking step).</dd> | |
| <dt><a href="usage.html#keepclassmembernames"><code><b>keepclassmembernames</b></code></a> | |
| <a href="#classspecification"><i>class_specification</i></a></dt> | |
| <dd>Preserve the names of the specified class members (if they aren't removed | |
| in the shrinking step).</dd> | |
| <dt><a href="usage.html#keepclasseswithmembernames"><code><b>keepclasseswithmembernames</b></code></a> | |
| <a href="#classspecification"><i>class_specification</i></a></dt> | |
| <dd>Preserve the names of the specified classes <i>and</i> class members, if | |
| all of the specified class members are present (after the shrinking | |
| step).</dd> | |
| <dt><a href="usage.html#printseeds"><code><b>printseeds</b></code></a> | |
| [<a href="#file"><i>file</i></a>]</dt> | |
| <dd>List classes and class members matched by the various <code>keep</code> | |
| commands, to the standard output or to the given file.</dd> | |
| <dt><a href="usage.html#dontshrink"><code><b>dontshrink</b></code></a></dt> | |
| <dd>Don't shrink the input class files.</dd> | |
| <dt><a href="usage.html#printusage"><code><b>printusage</b></code></a> | |
| [<a href="#file"><i>file</i></a>]</dt> | |
| <dd>List dead code of the input class files, to the standard output or to the | |
| given file.</dd> | |
| <dt><a href="usage.html#whyareyoukeeping"><code><b>whyareyoukeeping</b></code></a> | |
| <a href="#classspecification"><i>class_specification</i></a></dt> | |
| <dd>Print details on why the given classes and class members are being kept in | |
| the shrinking step.</dd> | |
| <dt><a href="usage.html#dontoptimize"><code><b>dontoptimize</b></code></a></dt> | |
| <dd>Don't optimize the input class files.</dd> | |
| <dt><a href="usage.html#optimizations"><code><b>optimizations</b></code></a> '<a href="optimizations.html"><i>optimization_filter</i></a>'</dt> | |
| <dd>Perform only the specified optimizations.</dd> | |
| <dt><a href="usage.html#optimizationpasses"><code><b>optimizationpasses</b></code></a> | |
| <i>n</i></dt> | |
| <dd>The number of optimization passes to be performed.</dd> | |
| <dt><a href="usage.html#assumenosideeffects"><code><b>assumenosideeffects</b></code></a> | |
| <a href="#classspecification"><i>class_specification</i></a></dt> | |
| <dd>Assume that the specified methods don't have any side effects, while | |
| optimizing. <i>Only use this option if you know what you're | |
| doing!</i></dd> | |
| <dt><a href="usage.html#allowaccessmodification"><code><b>allowaccessmodification</b></code></a></dt> | |
| <dd>Allow the access modifiers of classes and class members to be modified, | |
| while optimizing.</dd> | |
| <dt><a href="usage.html#mergeinterfacesaggressively"><code><b>mergeinterfacesaggressively</b></code></a></dt> | |
| <dd>Allow any interfaces to be merged, while optimizing.</dd> | |
| <dt><a href="usage.html#dontobfuscate"><code><b>dontobfuscate</b></code></a></dt> | |
| <dd>Don't obfuscate the input class files.</dd> | |
| <dt><a href="usage.html#printmapping"><code><b>printmapping</b></code></a> | |
| [<a href="#file"><i>file</i></a>]</dt> | |
| <dd>Print the mapping from old names to new names for classes and class members | |
| that have been renamed, to the standard output or to the given file.</dd> | |
| <dt><a href="usage.html#applymapping"><code><b>applymapping</b></code></a> | |
| <a href="#file"><i>file</i></a></dt> | |
| <dd>Reuse the given mapping, for incremental obfuscation.</dd> | |
| <dt><a href="usage.html#obfuscationdictionary"><code><b>obfuscationdictionary</b></code></a> | |
| <a href="#file"><i>file</i></a></dt> | |
| <dd>Use the words in the given text file as obfuscated field names and method | |
| names.</dd> | |
| <dt><a href="usage.html#classobfuscationdictionary"><code><b>classobfuscationdictionary</b></code></a> | |
| <a href="#file"><i>file</i></a></dt> | |
| <dd>Use the words in the given text file as obfuscated class names.</dd> | |
| <dt><a href="usage.html#packageobfuscationdictionary"><code><b>packageobfuscationdictionary</b></code></a> | |
| <a href="#file"><i>file</i></a></dt> | |
| <dd>Use the words in the given text file as obfuscated package names.</dd> | |
| <dt><a href="usage.html#overloadaggressively"><code><b>overloadaggressively</b></code></a></dt> | |
| <dd>Apply aggressive overloading while obfuscating.</dd> | |
| <dt><a href="usage.html#useuniqueclassmembernames"><code><b>useuniqueclassmembernames</b></code></a></dt> | |
| <dd>Ensure uniform obfuscated class member names for subsequent incremental | |
| obfuscation.</dd> | |
| <dt><a href="usage.html#dontusemixedcaseclassnames"><code><b>dontusemixedcaseclassnames</b></code></a></dt> | |
| <dd>Don't generate mixed-case class names while obfuscating.</dd> | |
| <dt><a href="usage.html#keeppackagenames"><code><b>keeppackagenames</b></code></a> ['<a href="usage.html#filters"><i>package_filter</i></a>']</dt> | |
| <dd>Keep the specified package names from being obfuscated. If no name is | |
| given, all package names are preserved.</dd> | |
| <dt><a href="usage.html#flattenpackagehierarchy"><code><b>flattenpackagehierarchy</b></code></a> | |
| '<i>package_name</i>'</dt> | |
| <dd>Repackage all packages that are renamed into the single given parent | |
| package.</dd> | |
| <dt><a href="usage.html#repackageclasses"><code><b>repackageclasses</b></code></a> | |
| ['<i>package_name</i>']</dt> | |
| <dd>Repackage all class files that are renamed into the single given | |
| package.</dd> | |
| <dt><a href="usage.html#keepattributes"><code><b>keepattributes</b></code></a> ['<a href="usage.html#filters"><i>attribute_filter</i></a>']</dt> | |
| <dd>Preserve the specified optional Java bytecode attributes, with optional | |
| wildcards. If no name is given, all attributes are preserved.</dd> | |
| <dt><a href="usage.html#keepparameternames"><code><b>keepparameternames</b></code></a></dt> | |
| <dd>Keep the parameter names and types of methods that are kept.</dd> | |
| <dt><a href="usage.html#renamesourcefileattribute"><code><b>renamesourcefileattribute</b></code></a> | |
| ['<i>string</i>']</dt> | |
| <dd>Put the given constant string in the <code>SourceFile</code> | |
| attributes.</dd> | |
| <dt><a href="usage.html#adaptclassstrings"><code><b>adaptclassstrings</b></code></a> | |
| ['<a href="usage.html#filters"><i>class_filter</i></a>']</dt> | |
| <dd>Adapt string constants in the specified classes, based on the obfuscated | |
| names of any corresponding classes.</dd> | |
| <dt><a href="usage.html#adaptresourcefilenames"><code><b>adaptresourcefilenames</b></code></a> | |
| ['<a href="usage.html#filefilters"><i>file_filter</i></a>']</dt> | |
| <dd>Rename the specified resource files, based on the obfuscated names of the | |
| corresponding class files.</dd> | |
| <dt><a href="usage.html#adaptresourcefilecontents"><code><b>adaptresourcefilecontents</b></code></a> | |
| ['<a href="usage.html#filefilters"><i>file_filter</i></a>']</dt> | |
| <dd>Update the contents of the specified resource files, based on the | |
| obfuscated names of the processed classes.</dd> | |
| <dt><a href="usage.html#dontpreverify"><code><b>dontpreverify</b></code></a></dt> | |
| <dd>Don't preverify the processed class files if they are targeted at Java Micro | |
| Edition or at Java 6 or higher.</dd> | |
| <dt><a href="usage.html#microedition"><code><b>microedition</b></code></a></dt> | |
| <dd>Target the processed class files at Java Micro Edition.</dd> | |
| <dt><a href="usage.html#verbose"><code><b>verbose</b></code></a></dt> | |
| <dd>Write out some more information during processing.</dd> | |
| <dt><a href="usage.html#dontnote"><code><b>dontnote</b></code></a> '<a href="usage.html#filters"><i>class_filter</i></a>'</dt> | |
| <dd>Don't print notes about classes matching the specified class name | |
| filter.</dd> | |
| <dt><a href="usage.html#dontwarn"><code><b>dontwarn</b></code></a> '<a href="usage.html#filters"><i>class_filter</i></a>'</dt> | |
| <dd>Don't print warnings about classes matching the specified class name | |
| filter. <i>Only use this option if you know what you're doing!</i></dd> | |
| <dt><a href="usage.html#ignorewarnings"><code><b>ignorewarnings</b></code></a></dt> | |
| <dd>Print warnings about unresolved references, but continue processing | |
| anyhow. <i>Only use this option if you know what you're doing!</i></dd> | |
| <dt><a href="usage.html#printconfiguration"><code><b>printconfiguration</b></code></a> | |
| [<a href="#file"><i>file</i></a>]</dt> | |
| <dd>Write out the entire configuration in traditional ProGuard style, to the | |
| standard output or to the given file. Useful to replace unreadable | |
| XML configurations.</dd> | |
| <dt><a href="usage.html#dump"><code><b>dump</b></code></a> | |
| [<a href="#file"><i>file</i></a>]</dt> | |
| <dd>Write out the internal structure of the processed class files, to the | |
| standard output or to the given file.</dd> | |
| </dl> | |
| <h2><a name="classpath">Class Paths</a></h2> | |
| Class paths are specified as Gradle file collections, which means they can be | |
| specified as simple strings, with <code>files(Object)</code>, etc. | |
| <p> | |
| In addition, they can have ProGuard-style filters, specified as | |
| comma-separated named arguments after the file: | |
| <dl> | |
| <dt><code><b>filter:</b></code> | |
| '<a href="usage.html#filefilters"><i>file_filter</i></a>'</dt> | |
| <dd>An optional filter for all class file names and resource file names that | |
| are encountered.</dd> | |
| <dt><code><b>apkfilter:</b></code> | |
| '<a href="usage.html#filefilters"><i>file_filter</i></a>'</dt> | |
| <dd>An optional filter for all apk names that are encountered.</dd> | |
| <dt><code><b>jarfilter:</b></code> | |
| '<a href="usage.html#filefilters"><i>file_filter</i></a>'</dt> | |
| <dd>An optional filter for all jar names that are encountered.</dd> | |
| <dt><code><b>aarfilter:</b></code> | |
| '<a href="usage.html#filefilters"><i>file_filter</i></a>'</dt> | |
| <dd>An optional filter for all aar names that are encountered.</dd> | |
| <dt><code><b>warfilter:</b></code> | |
| '<a href="usage.html#filefilters"><i>file_filter</i></a>'</dt> | |
| <dd>An optional filter for all war names that are encountered.</dd> | |
| <dt><code><b>earfilter:</b></code> | |
| '<a href="usage.html#filefilters"><i>file_filter</i></a>'</dt> | |
| <dd>An optional filter for all ear names that are encountered.</dd> | |
| <dt><code><b>zipfilter:</b></code> | |
| '<a href="usage.html#filefilters"><i>file_filter</i></a>'</dt> | |
| <dd>An optional filter for all zip names that are encountered.</dd> | |
| </dl> | |
| <h2><a name="file">Files</a></h2> | |
| Files are specified as Gradle files, which means they can be specified | |
| as simple strings, as File instances, with <code>file(Object)</code>, etc. | |
| <p> | |
| In Gradle, file names (any strings really) in double quotes can contain | |
| properties or code inside <code>${...}</code>. These are automatically | |
| expanded. | |
| <p> | |
| For example, <code>"${System.getProperty('java.home')}/lib/rt.jar"</code> is | |
| expanded to something like <code>'/usr/local/java/jdk/jre/lib/rt.jar'</code>. | |
| Similarly, <code>System.getProperty('user.home')</code> is expanded to the | |
| user's home directory, and <code>System.getProperty('user.dir')</code> is | |
| expanded to the current working directory. | |
| <h2><a name="keepmodifier">Keep Modifiers</a></h2> | |
| The keep settings can have the following named arguments that modify their | |
| behaviors: | |
| <dl> | |
| <dt><a href="usage.html#includedescriptorclasses"><code><b>includedescriptorclasses:</b></code></a> | |
| <i>boolean</i> | |
| (default = false)</dt> | |
| <dd>Specifies whether the classes of the fields and methods specified in the | |
| keep tag must be kept as well.</dd> | |
| <dt><a href="usage.html#allowshrinking"><code><b>allowshrinking:</b></code></a> | |
| <i>boolean</i> | |
| (default = false)</dt> | |
| <dd>Specifies whether the entry points specified in the keep tag may be | |
| shrunk.</dd> | |
| <dt><a href="usage.html#allowoptimization"><code><b>allowoptimization:</b></code></a> | |
| <i>boolean</i> | |
| (default = false)</dt> | |
| <dd>Specifies whether the entry points specified in the keep tag may be | |
| optimized.</dd> | |
| <dt><a href="usage.html#allowobfuscation"><code><b>allowobfuscation:</b></code></a> | |
| <i>boolean</i> | |
| (default = false)</dt> | |
| <dd>Specifies whether the entry points specified in the keep tag may be | |
| obfuscated.</dd> | |
| </dl> | |
| Names arguments are comma-separated, as usual. | |
| <h2><a name="classspecification">Class Specifications</a></h2> | |
| A class specification is a template of classes and class members (fields and methods). There are two alternative ways to specify such a template: | |
| <ol> | |
| <li>As a string containing a ProGuard-style class specification. This is the | |
| most compact and most readable way. The specification looks like a Java | |
| declaration of a class with fields and methods. For example: | |
| <pre> | |
| keep 'public class mypackage.MyMainClass { \ | |
| public static void main(java.lang.String[]); \ | |
| }' | |
| </pre></li> | |
| <li>As a Gradle-style setting: a method calls with named arguments and a | |
| closure. This is more verbose, but it might be useful for programmatic | |
| specifications. For example: | |
| <pre> | |
| keep access: 'public', | |
| name: 'mypackage.MyMainClass', { | |
| method access: 'public static', | |
| type: 'void', | |
| name: 'main', | |
| parameters: 'java.lang.String[]' | |
| } | |
| </pre></li> | |
| </ol> | |
| <p> | |
| The <a href="usage.html#classspecification">ProGuard-style class | |
| specification</a> is described on the traditional Usage page. | |
| <p> | |
| A Gradle-style class specification can have the following named arguments: | |
| <dl> | |
| <dt><code><b>access:</b></code> '<i>access_modifiers</i>'</dt> | |
| <dd>The optional access modifiers of the class. Any space-separated list of | |
| "public", "final", and "abstract", with optional negators "!".</dd> | |
| <dt><code><b>annotation:</b></code> '<i>annotation_name</i>'</dt> | |
| <dd>The optional fully qualified name of an annotation of the class, with | |
| optional wildcards.</dd> | |
| <dt><code><b>type:</b></code> '<i>type</i>'</dt> | |
| <dd>The optional type of the class: one of "class", "interface", or | |
| "!interface".</dd> | |
| <dt><code><b>name:</b></code> '<i>class_name</i>'</dt> | |
| <dd>The optional fully qualified name of the class, with optional | |
| wildcards.</dd> | |
| <dt><code><b>extendsannotation:</b></code> '<i>annotation_name</i>'</dt> | |
| <dd>The optional fully qualified name of an annotation of the the class that | |
| the specified classes must extend, with optional wildcards.</dd> | |
| <dt><code><b>'extends':</b></code> '<i>class_name</i>'</dt> | |
| <dd>The optional fully qualified name of the class the specified classes | |
| must extend, with optional wildcards.</dd> | |
| <dt><code><b>'implements':</b></code> '<i>class_name</i>'</dt> | |
| <dd>The optional fully qualified name of the class the specified classes | |
| must implement, with optional wildcards.</dd> | |
| </dl> | |
| The named arguments are optional. Without any arguments, there are no | |
| constraints, so the settings match all classes. | |
| <p> | |
| <h3><a name="classmemberspecification">Gradle-style Class Member Specifications</a></h3> | |
| The closure of a Gradle-style class specification can specify class members | |
| with these settings: | |
| <dl> | |
| <dt><code><b>field</b></code> <i>field_constraints</i></dt> | |
| <dd>Specifies a field.</dd> | |
| <dt><code><b>method</b></code> <i>method_constraints</i></dt> | |
| <dd>Specifies a method.</dd> | |
| <dt><code><b>constructor</b></code> <i>constructor_constraints</i></dt> | |
| <dd>Specifies a constructor.</dd> | |
| </dl> | |
| A class member setting can have the following named arguments to express | |
| constraints: | |
| <dl> | |
| <dt><code><b>access:</b></code> '<i>access_modifiers</i>'</dt> | |
| <dd>The optional access modifiers of the class. Any space-separated list of | |
| "public", "protected", "private", "static", etc., with optional negators | |
| "!".</dd> | |
| <dt><code><b>'annotation':</b></code> '<i>annotation_name</i>'</dt> | |
| <dd>The optional fully qualified name of an annotation of the class member, | |
| with optional wildcards.</dd> | |
| <dt><code><b>type:</b></code> '<i>type</i>'</dt> | |
| <dd>The optional fully qualified type of the class member, with optional | |
| wildcards. Not applicable for constructors, but required for methods for | |
| which the <code>parameters</code> argument is specified.</dd> | |
| <dt><code><b>name:</b></code> '<i>name</i>'</dt> | |
| <dd>The optional name of the class member, with optional wildcards. Not | |
| applicable for constructors.</dd> | |
| <dt><code><b>parameters:</b></code> '<i>parameters</i>'</dt> | |
| <dd>The optional comma-separated list of fully qualified method parameters, | |
| with optional wildcards. Not applicable for fields, but required for | |
| constructors, and for methods for which the <code>type</code> argument is | |
| specified.</dd> | |
| </dl> | |
| The named arguments are optional. Without any arguments, there are no | |
| constraints, so the settings match all constructors, fields, or methods. | |
| <p> | |
| A class member setting doesn't have a closure. | |
| <h2><a name="anttask">Alternative: imported Ant task</a></h2> | |
| Instead of using the Gradle task, you could also integrate the Ant task in | |
| your Gradle build file: | |
| <p> | |
| <pre> | |
| ant.project.basedir = '../..' | |
| ant.taskdef(resource: 'proguard/ant/task.properties', | |
| classpath: '/usr/local/java/proguard/lib/proguard.jar') | |
| </pre> | |
| <p> | |
| Gradle automatically converts the elements and attributes to Groovy methods, | |
| so converting the configuration is essentially mechanical. The one-on-one | |
| mapping can be useful, but the resulting configuration is more verbose. For | |
| instance: | |
| <pre> | |
| task proguard << { | |
| ant.proguard(printmapping: 'proguard.map', | |
| overloadaggressively: 'on', | |
| repackageclasses: '', | |
| renamesourcefileattribute: 'SourceFile') { | |
| injar(file: 'application.jar') | |
| injar(file: 'gui.jar', filter: '!META-INF/**') | |
| ..... | |
| } | |
| } | |
| </pre> | |
| <p> | |
| <hr /> | |
| <address> | |
| Copyright © 2002-2017 | |
| <a target="other" href="http://www.lafortune.eu/">Eric Lafortune</a> @ <a target="top" href="http://www.guardsquare.com/">GuardSquare</a>. | |
| </address> | |
| </body> | |
| </html> |