libpninexus provides the IO functionality among the PNI libraries. Currently this is restricted to file IO. The library supports

• simple ASCII io with formatters and parsers
• read support for TIFF and CBF files
• read support for DESY FIO files
• read/write support for Nexus files

In order to install libpninexus on a Linux system the following software packages are requiered sdfdsf

• a C++11 compatiable compiler (gcc >= 4.9, msvc >= 2014)
• cmake (>= 3.10)
• doxygen in order to build the documentation
• sphinx to build the users guide

libpninexus requires certain library dependencies to be installed on the build system

• Boost (>=1.60)
• h5cpp (>=0.5.0) -- from https://ess-dmsc.github.io/h5cpp/

and their transitive dependencies. If all dependencies are available on your system you can clone this repository and configure the build

$ git clone https://github.com/pni-libraries/libpninexus.git
$ cd libpninexus
$ mkdir build
$ cd build
$ cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/opt/pninexus -DPNINEXUS_CONAN=DISABLE ../

with CMAKE_INSTALL_PREFIX we tell the system where to install the library and its header files. To start the build use

$ make

By the default the all target is built which excludes the tests. To build and run the tests use

$ make check

Finally, you can install the code with

$ make install

to the directory determined by CMAKE_INSTALL_PREFIX.

The package not only installs the libraries runtime binaries and header files but also cmake package files which make using the library quite simple if you use cmake for your own build. Consider the following simple example program in a file hello.cpp

#include <pni/nexus.hpp>

using namespace pni;

int main()
{
    hdf5::file::File file = nexus::create_file("hello.nxs",hdf5::file::AccessFlags::Truncate);

    return 0;
}

When using cmake for the build the CMakeLists.txt file look like this

cmake_minimum_required(VERSION 3.5.0)
project(hello LANGUAGES C CXX VERSION 0.0.1 )

find_package(pninexus REQUIRED)

add_executable(hello hello.cpp)
target_link_libraries(hello pninexus)

More information can be found at online documentation.

Changes for a specific version of libpninexus can be found at CHANGELOG.