Update website.

Author: antony-jr

website/blog/2017-12-27-publishing-the-official-documentation.md renamed to .old_blog/2017-12-27-publishing-the-official-documentation.md

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+---
+title: Announcing QArchive v2.1.x
+author: Antony J.r
+authorURL: https://antonyjr.in
+---
+
+QArchive has come a long road. I would say that I never expected that it would actually live this long. In this **release** QArchive gets a very big upgrade.
+
+When this library was first created the only scope was hard drive based extraction and compression and libarchive seems to have a lot of optimization like zero-copy. But for a long time I've wished to have in-memory extraction and compression but was **too lazy**(sorry folks).
+
+In this release, **I present you with new classes to handle in-memory extraction and compression with ease**. Down below are the new classes which are added to the **QArchive namespace.**
+
+   * QArchive::MemoryExtractor
+
+   * QArchive::MemoryFile
+
+   * QArchive::MemoryExtractorOutput
+
+   * QArchive::MemoryCompressor
+
+Pleae see the documentation for detailed information on these classes.
+
+### A Little Demo
+
+Let me demonstrate you a small example where we compress and extract a **7Zip** archive in-memory and read the first file contents if it's text document.
+
+```
+#include <QCoreApplication>
+#include <QDebug>
+#include <QBuffer>
+#include <QArchive/QArchive>
+/* #include <QArchive> // if you use add_subdirectory with cmake */
+
+int main(int argc, char **argv) {
+   QCoreApplication app(argc, argv);
+
+   // Let's write our text document.
+   QString text = QString::fromUtf8("Thanks for using QArchive.");
+
+   QBuffer document;
+   document.open(QIODevice::WriteOnly);
+   document.write(text.toLocal8Bit().constData());
+   document.close();
+
+   QArchive::MemoryCompressor compressor(QArchive::SevenZipFormat);
+   compressor.addFiles("Readme.txt", (QIODevice*)&document);
+
+   QIODevice *archive = nullptr;
+   QArchive::MemoryExtractor extractor;
+
+   QObject::connect(&compressor, &QArchive::MemoryCompressor::finished,
+   [&](QBuffer *a) {
+	archive = (QIODevice*)a;
+	extractor.setArchive(archive);
+	extractor.start();
+   });
+
+   QObject::connect(&extractor, &QArchive::MemoryExtractor::finished,
+   [&](QArchive::MemoryExtractorOutput *output) {
+	auto buffer = output->getFiles().at(0).buffer();
+	auto fileInfo = output->getFiles().at(0).fileInformation();
+
+	buffer->open(QIODevice::ReadOnly);
+
+	qDebug() << "Filename:: " << fileInfo.value("FileName").toString();
+	qDebug() << "Contents:: " << QString(buffer.readAll());
+
+	// Only delete the output object and 
+	// any other buffer you allocated.	
+	output->deleteLater();
+	archive->deleteLater();
+	app.quit();
+   });
+   return app.exec();
+}
+```
+