dotnetzip/Help/Code Examples/Cpp.htm at master · vcpp/dotnetzip · GitHub

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<html>
<head>
<title>C++/CLI</title>
<style>
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</head>

<!-- @SortOrder 80 -->

<body>
<h1>You can use DotNetZip from C++/CLI</h1>

<p>
  A program written in C++/CLI can take advantage of any managed
  library. It&quot;s easy to use DotNetZip from a C++/CLI application.  This
  page will show some examples.
</p>

<p>
  Using C++/CLI, the key difference from VB and C#, is that there is
  no <strong>using</strong> statement in C++.  C++ applications need to
  surround the use of the ZipFile class with a try..catch.. and call the
  ZipFile destructor, or call delete, in the finally clause.
</p>

<hr/>

<h3>Create a zip file</h3>

<p> This example just creates a simple zipfile. It uses the destructor.
</p>

<pre lang="C++" numberLines="true" outlining="true"
  title="Create a Zip archive - destructor">

using namespace System;
using namespace Ionic::Zip;

int main(array&lt;System::String ^&gt; ^args)
{
    Console::WriteLine(L"Hello World");

    ZipFile ^ zip;
    try
    {
        zip = gcnew ZipFile();
        zip-&gt;AddEntry("Readme.txt", "This is the content for the Readme.txt entry.");
        zip-&gtAddFile("CreateZipFile.cpp");
        zip-&gt;Save("test.zip");
    }
    finally
    {
        zip-&gt;~ZipFile();
    }

    Console::WriteLine(L"Press &lt;ENTER&gt; to quit.");
    Console::ReadLine();
    return 0;
}

</pre>

<p> This alternative uses the C++ deleee syntax:
</p>


<pre lang="C++" numberLines="true" outlining="true"
  title="Create a Zip archive - delete">

using namespace System;
using namespace Ionic::Zip;

int main(array&lt;System::String ^&gt; ^args)
{
    Console::WriteLine(L"Hello World");

    ZipFile ^ zip;
    try
    {
        zip = gcnew ZipFile();
        zip-&gt;AddEntry("Readme.txt", "This is the content for the Readme.txt entry.");
        zip-&gtAddFile("CreateZipFile.cpp");
        zip-&gt;Save("test.zip");
    }
    finally
    {
        delete zip;
    }

    Console::WriteLine(L"Press &lt;ENTER&gt; to quit.");
    Console::ReadLine();
    return 0;
}

</pre>


<h3>Building C++/CLI program that uses DotNetZip</h3>

<p>Build a C++/CLI program that uses DotNetZip, just as you would build
any C++/CLI program. </p>

<p>The easiest way is to use Visual Studio, and create a C++/CLI
project. Right click on the project and select <span style="font-family:
Courier;">References...</span>.  Add a reference to the Ionic.Zip.dll
assembly.  Click OK, then build your application.</p>

<p>You can also build using command-line tools. To do this, you will
need to compile using the c++ source using the cl.exe tool, specifying
the /clr option, and specifying where to find the Ionic.Zip.dll
assembly. A typical series of steps to build a simple C++/CLI program
that uses DotNetZip from one source file, supposing the name of the
source file is CreateZipFile.cpp, is: </p>

<pre>
  \vc9\bin\cl.exe /Od /FD /EHa /MDd  /Fo".\\"  -I\vc9\include /W3 /c /Zi /clr /TP
      /FU "c:\Windows\Microsoft.NET\Framework\v2.0.50727\System.dll"
      /FU Ionic.Zip.dll CreateZipFile.cpp

  \vc9\bin\link.exe /OUT:CreateZipFile.exe  /DEBUG /ASSEMBLYDEBUG
      /MANIFEST /MANIFESTFILE:"CreateZipFile.exe.intermediate.manifest"
      /MANIFESTUAC:"level='asInvoker' uiAccess='false'"
      /PDB:CreateZipFile.pdb /DYNAMICBASE /FIXED:No /NXCOMPAT /MACHINE:X86
      /LIBPATH:\vc9\lib /LIBPATH:\winsdk\lib CreateZipFile.obj

  c:\netsdk2.0\Bin\mt.exe /outputresource:"CreateZipFile.exe;#1"
      /manifest CreateZipFile.exe.intermediate.manifest
</pre>


<h3>Create a zip file using AES encryption</h3>

<p> This example creates a zipfile, using AES 128-bit
encryption to encrypt the entries.
</p>

<pre lang="C++" numberLines="true" outlining="true"
  title="Create an encrypted zip">

#include "stdafx.h"

using namespace System;
using namespace Ionic::Zip;

int main(array&lt;System::String ^&gt; ^args)
{
    Console::WriteLine(L"Hello World");

    ZipFile ^ zip;
    try
    {
        zip = gcnew ZipFile();
        zip-&gt;Password = verySecret;
        zip-&gt;Encryption = EncryptionAlgorithm::WinZipAes128;
        zip-&gt;AddEntry("Readme.txt", "This is the content for the Readme.txt entry.");
        zip-&gt;AddFile("Data.csv");
        zip-&gt;Save("test.zip");
    }
    finally
    {
        zip-&gt;~ZipFile();
    }

    Console::WriteLine(L"Press &lt;ENTER&gt; to quit.");
    Console::ReadLine();
    return 0;
}

</pre>


<h3>Use a SaveProgress event from C++</h3>

<p> This example creates a zipfile, and uses a SaveProgress event.
</p>

<pre lang="C++" numberLines="true" outlining="true"
  title="Create an encrypted zip">


#include "stdafx.h"

using namespace System;
using namespace System::IO;
using namespace Ionic::Zip;


public ref class DnzHelloCppCli
{

private:
    bool justHadByteUpdate;

public:
    DnzHelloCppCli()
        {
        }

public:
    void Run()
        {
            Console::WriteLine(L"Hello World");
            Console::WriteLine("Using DotNetZip version {0}", ZipFile::LibraryVersion);
            array&lt;String^&gt;^ filesToAdd = System::IO::Directory::GetFiles(".", "*.cpp");

            ZipFile ^ zip;
            try
            {
                zip = gcnew ZipFile();
                zip-&gt;Password = "Harbinger";
                zip-&gt;Encryption = EncryptionAlgorithm::WinZipAes128;
                zip-&gt;SaveProgress += gcnew EventHandler&lt;SaveProgressEventArgs^&gt;(this, &DnzHelloCppCli::SaveProgress);
                zip-&gt;AddEntry("Readme.txt", "This is the content for the Readme.txt entry.");
                zip-&gt;AddFiles(filesToAdd, "files");
                zip-&gt;Save("MyArchive.zip");
            }
            finally
            {
                zip-&gt;~ZipFile();
            }

            Console::WriteLine(L"Press &lt;ENTER&gt; to quit.");
            Console::ReadLine();
            return;
        }

public:
    void SaveProgress(Object^ sender, SaveProgressEventArgs^ e)
        {
            switch (e-&gt;EventType)
            {
                case ZipProgressEventType::Saving_Started:
                {
                    Console::WriteLine("Saving: {0}", e-&gt;ArchiveName);
                    break;
                }
                case ZipProgressEventType::Saving_BeforeWriteEntry:
                {
                    if (this-&gt;justHadByteUpdate)
                    {
                        Console::WriteLine();
                    }
                    Console::WriteLine("  Writing: {0} ({1}/{2})",
                                       e-&gt;CurrentEntry-&gt;FileName,
                                       (e-&gt;EntriesSaved + 1),
                                       e-&gt;EntriesTotal);
                    this-&gt;justHadByteUpdate = false;
                    break;
                }
                case ZipProgressEventType::Saving_AfterWriteEntry:
                {
                    if (e-&gt;CurrentEntry-&gt;InputStreamWasJitProvided)
                    {
                        e-&gt;CurrentEntry-&gt;InputStream-&gt;Close();
                        e-&gt;CurrentEntry-&gt;InputStream = nullptr;
                    }
                    break;
                }
                case ZipProgressEventType::Saving_Completed:
                {
                    this-&gt;justHadByteUpdate = false;
                    Console::WriteLine();
                    Console::WriteLine("Done: {0}", e-&gt;ArchiveName);
                    break;
                }
                case ZipProgressEventType::Saving_EntryBytesRead:
                {
                    if (this-&gt;justHadByteUpdate)
                    {
                        Console::SetCursorPosition(0, Console::CursorTop);
                    }
                    Console::Write("     {0}/{1} ({2:N0}%)",
                                   e-&gt;BytesTransferred,
                                   e-&gt;TotalBytesToTransfer,
                                   (((double) e-&gt;BytesTransferred) / (0.01 * e-&gt;TotalBytesToTransfer)));
                    this-&gt;justHadByteUpdate = true;
                    break;
                }
            }
        }

};


int main(array&lt;System::String ^&gt; ^args)
{
    try
    {
        DnzHelloCppCli^ me = gcnew DnzHelloCppCli();
        me-&gt;Run();
    }
    catch (Exception^ ex1)
    {
        Console::Error-&gt;WriteLine(String::Concat("exception: ", ex1));
    }
    return 0;
}

</pre>


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