1. EasyZip

C++ wrapper around minizip compression library.

EasyZip's goal is to bring the power and simplicity of minizip to a more object oriented/c++ user friendly library. It was born out of the necessity of a compression library that would be reliable, simple and flexible. By flexibility I mean supporting all kinds of inputs and outputs, but specifically been able to compress into memory instead of been restricted to file compression only, and using data from memory instead of just files as well.

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2. Features

• Create zip in memory
• Allow files, vector and generic streams as input to zip
• File mappings for replacing strategies (overwrite if exists or use alternative name from mapping)
• Password protected zip
• Multi platform

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3. Compiling/Install

In order to use and compile EasyZip you need to have zlib.

The preferred way is to use vckpg to install zlib.

The preferred way is to create a folder for the compilation output to avoid polluting the root folder.

3.1 Compiling/Install from source

3.1.1 Windows Platform

vcpkg install zlib:x86-windows
vcpkg install gtest:x86-windows
git clone https://github.com/winsoft666/easyzip.git
cd easyzip
mkdir build
cd build
cmake ../

After run above commands, you can use Visual Studio to open solution, compile.

3.1.2 Linux Platform

vcpkg install zlib:x64-linux
vcpkg install gtest:x64-linux
git clone https://github.com/winsoft666/easyzip.git
cd easyzip
mkdir build
cd build
cmake ../
make
make install

3.2 Compiling/Install with vcpkg

1. Copy vcpkg_port\easyzip folder to <vcpkg>\ports folder.
2. Using vcpkg command to install.

# Shared library
vcpkg install easyzip:x86-windows

# Static library
vcpkg install easyzip:x86-windows-static

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Getting Started

There are two classes available Zipper and Unzipper.

They behave in the same manner regarding constructors and storage parameters.

Zipping

• Creating a zip file with 2 files:

#include "easyzip.h"

using namespace easyzip;

std::ifstream input1("some file");
std::ifstream input2("some file");

Zipper zipper("ziptest.zip");
zipper.add(input1, "Test1");
zipper.add(input2, "Test1");

zipper.close();

• Adding a file by name and an entire folder to a zip:

Zipper zipper("ziptest.zip");
zipper.add("somefile.txt");
zipper.add("myFolder");
zipper.close();

• Creating a zip file using the awesome streams from boost that lets us use a vector as a stream:

#include <boost\interprocess\streams\vectorstream.hpp>
...

boost::interprocess::basic_vectorstream<std::vector<char>> input_data(some_vector);

Zipper zipper("ziptest.zip");
zipper.add(input_data, "Test1");
zipper.close();

• Creating a zip in memory stream with files:

#include <boost\interprocess\streams\vectorstream.hpp>
...

boost::interprocess::basic_vectorstream<std::vector<char>> zip_in_memory;
std::ifstream input1("some file");

Zipper zipper(zip_in_memory);
zipper.add(input1, "Test1");
zipper.close();

• Creating a zip in a vector with files:

std::vector<char> zip_vect;
std::ifstream input1("some file");

Zipper zipper(zip_vect);
zipper.add(input1, "Test1");
zipper.close();

Unzipping

• Getting all entries in zip

Unzipper unzipper("zipfile.zip");
std::vector<ZipEntry> entries = unzipper.entries();
unzipper.close();

• Extracting all entries from zip

Unzipper unzipper("zipfile.zip");
unzipper.extract();
unzipper.close();

• Extracting all entries from zip using alternative names for existing files on disk

std::map<std::string, std::string> alternativeNames = { {"Test1", "alternative_name_test1"} };
Unzipper unzipper("zipfile.zip");
unzipper.extract(".", alternativeNames);
unzipper.close();

• Extracting a single entry from zip

Unzipper unzipper("zipfile.zip");
unzipper.extractEntry("entry name");
unzipper.close();

• Extracting a single entry from zip to memory

std::vector<unsigned char> unzipped_entry;
Unzipper unzipper("zipfile.zip");
unzipper.extractEntryToMemory("entry name", unzipped_entry);
unzipper.close();

Note: Methods extract, extractEntry, extractEntryToMemory return a boolean indicating the success (true) or the failure (false).