From 00dd37604d50cbf3fb27ec0631b4d4b6d2ee893a Mon Sep 17 00:00:00 2001 From: Xavier Del Campo Romero Date: Mon, 6 Oct 2025 23:02:51 +0200 Subject: Implement directory download as ZIP Thanks to the fdzipstream library [1] and zlib [2], it is possible to generate ZIP files on-the-fly, therefore requiring no extra disk space usage and only a small amount of memory. Unfortunately, as of the time of this writing fdzipstream is not packaged by any distributions yet [3], so it had to be imported as a git submodule as a workaround. While libarchive [4] could be an interesting alternative, writing ZIP files is only supported by very recent versions (>= 3.8.0), which are still not packaged by many distributions [5], either. Moreover, libarchive is a package with several dependencies other than zlib and is significantly larger compared to fdzipstreams, so fdzipstreams was ultimately considered a better fit for this purpose. [1]: https://github.com/CTrabant/fdzipstream.git [2]: http://zlib.net/ [3]: https://repology.org/projects/?search=fdzipstream [4]: https://www.libarchive.org/ [5]: https://repology.org/project/libarchive/versions --- cmake/Findfdzipstream.cmake | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 cmake/Findfdzipstream.cmake (limited to 'cmake') diff --git a/cmake/Findfdzipstream.cmake b/cmake/Findfdzipstream.cmake new file mode 100644 index 0000000..b26a515 --- /dev/null +++ b/cmake/Findfdzipstream.cmake @@ -0,0 +1,17 @@ +mark_as_advanced(FDZIPSTREAM_LIBRARY FDZIPSTREAM_INCLUDE_DIR) +find_library(FDZIPSTREAM_LIBRARY NAMES libfdzipstream fdzipstream) + +find_path(FDZIPSTREAM_INCLUDE_DIR NAMES fdzipstream.h) + +include(FindPackageHandleStandardArgs) +find_package_handle_standard_args(fdzipstream + DEFAULT_MSG FDZIPSTREAM_LIBRARY FDZIPSTREAM_INCLUDE_DIR) + +if(fdzipstream_FOUND) + if(NOT TARGET fdzipstream) + add_library(fdzipstream UNKNOWN IMPORTED) + set_target_properties(fdzipstream PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${FDZIPSTREAM_INCLUDE_DIR}" + IMPORTED_LOCATION "${FDZIPSTREAM_LIBRARY}") + endif() +endif() -- cgit v1.2.3