xlnt is a C++14 library for reading, writing, and modifying xlsx files as described in ECMA 376. The API is generally based on openpyxl, a python library for reading and writing xlsx/xlsm files. This is still very much a work in progress, but the core development work is complete (see note above).

Including xlnt in your project

// with -std=c++14 -Ixlnt/include -Lxlnt/lib -lxlnt
#include <xlnt/xlnt.hpp>

Creating a new spreadsheet and saving it

xlnt::workbook wb;
xlnt::worksheet ws = wb.get_active_sheet();
ws.get_cell("A1").set_value(5);
ws.get_cell("B2").set_value("string data");
ws.get_cell("C3").set_formula("=RAND()");
ws.merge_cells("C3:C4");
ws.freeze_panes("B2");
wb.save("book1.xlsx");

Opening an existing spreadsheet and printing all rows

xlnt::workbook wb2;
wb2.load("book2.xlsx");

// no need to use references, iterators are only wrappers around pointers to memory in the workbook
for(auto row : wb2["sheet2"].rows())
{
    for(auto cell : row)
    {
        std::cout << cell << std::endl;
    }
}

xlnt is regularly built and passes all 200+ tests in GCC 4.8.2, MSVC 14, and Clang (using Apple LLVM 7.0).

Workspaces for Visual Studio 2015, GNU Make, and Xcode can be created using GENie and the genie.lua script in the build/genie directory.

GENie binaries and source are currently available here.

In Windows, with Visual Studio 2015:

cd build/genie
genie vs2015
start vs2015/xlnt.sln

In Linux or OSX, with GNU Make:

cd build/genie
genie gmake
cd gmake && make

In OSX, with Xcode (Xcode 4 projects can be opened in Xcode 7.0)

cd build/genie
genie xcode4
open xcode4/xlnt.xcworkspace

For users who prefer CMake, cmake scripts are provided in build/cmake. To use this system, a build might look like:

cd build/cmake
mkdir build
cd build
cmake ..
make

xlnt uses the following libraries, which are included in the source tree (pugixml and cxxtest as git submodules) for convenience:

• miniz v1.15_r4 (public domain/unlicense)
• pugixml v1.6 (MIT license)
• cxxtest v4.4 (LGPLv3 license [only used for testing, separate from main library assembly])

xlnt is currently released to the public for free under the terms of the MIT License:

Copyright (c) 2014 Thomas Fussell

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.