Tomaž Vajngerl
5286d91e80
Import classifies each formula cell:
- Plain non-array, no coext:spill: the import-time walk over
the freshly compiled RPN decides if the formula intends an
array. If yes, prepend @ at the front of the parse and at
the back of the RPN.
- Plain non-array + coext:spill="true": a master saved while in
spill state. Comes back at 1x1 with the dynamic flag, the
position marked spilled. The next interpret re-checks the
blockers.
- Array formula (matrix dims): static array master by default.
coext:spill="true" promotes it to a dynamic-array master.
Legacy Ctrl+Shift+Enter (CSE) arrays without the marker keep
their static iteration-and-pad behaviour.
Export reverses:
- ODF always strips @ on save. The @ is an in-memory marker
only. OOXML and the UI grammar keep it.
- Dynamic master: coext:spill="true" in extended ODF, matrix
dims as before. In spill state, write as plain non-array with
coext:spill="true".
- Static array master: matrix dims, no coext:spill.
GetFormula skips the {} wrapping for dynamic-array masters so
they read back as plain formulas. Static array masters keep {}.
XML_SPILL is added to the xmloff token machinery and the ODF
extension schema (OpenDocument-v1.4+libreoffice-schema.rng)
gains coext:spill on table-cell.
Tests cover each import shape, the FODS export of regular and
spilled masters, the @ insertion on CompileXML, and the @
stripping at the formula-compiler level. ArrayFormulasStatic.ods
is a legacy fixture whose B1 = AND(C4:C52) summarises 49 per-row
value checks. The test runs the grid on import and after an ODS
round trip and confirms plain bare-range cells gain @ while the
five matrix masters stay static, keep their {} wrapping, and
get no coext:spill in the saved XML.
Signed-off-by: Tomaž Vajngerl <tomaz.vajngerl@collabora.co.uk>
Change-Id: Ib8ae345528185c824415ec5d039b6d5cf0d7eac8
Reviewed-on: https://gerrit.collaboraoffice.com/c/online/+/4663
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Tomaž Vajngerl <tomaz.vajngerl@collabora.com>
(cherry picked from commit a21f6a3a0eae72fef90576d249d96dc00beeb2c5)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/207171
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
Tested-by: Jenkins
LibreOffice
LibreOffice is an integrated office suite based on copyleft licenses and compatible with most document formats and standards. Libreoffice is backed by The Document Foundation, which represents a large independent community of enterprises, developers and other volunteers moved by the common goal of bringing to the market the best software for personal productivity. LibreOffice is open source, and free to download, use and distribute.
A quick overview of the LibreOffice code structure.
Overview
You can develop for LibreOffice in one of two ways, one recommended and one much less so. First the somewhat less recommended way: it is possible to use the SDK to develop an extension, for which you can read the API docs and Developers Guide. This re-uses the (extremely generic) UNO APIs that are also used by macro scripting in StarBasic.
The best way to add a generally useful feature to LibreOffice is to work on the code base however. Overall this way makes it easier to compile and build your code, it avoids any arbitrary limitations of our scripting APIs, and in general is far more simple and intuitive - if you are a reasonably able C++ programmer.
The Build Chain and Runtime Baselines
These are the current minimal operating system and compiler versions to run and compile LibreOffice, also used by the TDF builds:
- Windows:
- Runtime: Windows 10
- Build: wsl-as-helper + Visual Studio 2022
- macOS:
- Runtime: 11
- Build: 13 or later + Xcode 14.3 or later (using latest version available for a given version of macOS)
- Linux:
- Runtime: RHEL 9 or CentOS 9 and comparable
- Build: either GCC 13; or Clang 18 with libstdc++ 11
- iOS (only for LibreOfficeKit):
- Runtime: 14.5 (only support for newer i devices == 64 bit)
- Build: Xcode 12.5 and iPhone SDK 14.5
- Android:
- Build: NDK 27 and SDK 30.0.3
- Emscripten / WASM:
- Runtime: a browser with SharedMemory support (threads + atomics)
- Build: Qt 5.15 with Qt supported Emscripten 1.39.8
- See README.wasm
Java is required for building many parts of LibreOffice. In TDF Wiki article Development/Java, the exact modules that depend on Java are listed.
The baseline for Java is Java Development Kit (JDK) Version 17 or later.
The baseline for Python is version 3.11. It follows the version available in SUSE Linux Enterprise Desktop and the Maintenance Support version of Red Hat Enterprise Linux.
If you want to use Clang with the LibreOffice compiler plugins, the minimal version of Clang is 18. Since Xcode doesn't provide the compiler plugin headers, you have to compile your own Clang to use them on macOS.
You can find the TDF configure switches in the distro-configs/ directory.
To setup your initial build environment on Windows and macOS, we provide the LibreOffice Development Environment (LODE) scripts.
For more information see the build instructions for your platform in the TDF wiki.
The Important Bits of Code
Each module should have a README.md file inside it which has some
degree of documentation for that module; patches are most welcome to
improve those. We have those turned into a web page here:
However, there are two hundred modules, many of them of only peripheral interest for a specialist audience. So - where is the good stuff, the code that is most useful. Here is a quick overview of the most important ones:
| Module | Description |
|---|---|
| sal/ | this provides a simple System Abstraction Layer |
| tools/ | this provides basic internal types: Rectangle, Color etc. |
| vcl/ | this is the widget toolkit library and one rendering abstraction |
| framework/ | UNO framework, responsible for building toolbars, menus, status bars, and the chrome around the document using widgets from VCL, and XML descriptions from /uiconfig/ files |
| sfx2/ | legacy core framework used by Writer/Calc/Draw: document model / load/save / signals for actions etc. |
| svx/ | drawing model related helper code, including much of Draw/Impress |
Then applications
| Module | Description |
|---|---|
| desktop/ | this is where the main() for the application lives, init / bootstrap. the name dates back to an ancient StarOffice that also drew a desktop |
| sw/ | Writer |
| sc/ | Calc |
| sd/ | Draw / Impress |
There are several other libraries that are helpful from a graphical perspective:
| Module | Description |
|---|---|
| basegfx/ | algorithms and data-types for graphics as used in the canvas |
| canvas/ | new (UNO) canvas rendering model with various backends |
| cppcanvas/ | C++ helper classes for using the UNO canvas |
| drawinglayer/ | View code to render drawable objects and break them down into primitives we can render more easily. |
Rules for #include Directives (C/C++)
Use the "..." form if and only if the included file is found next to the
including file. Otherwise, use the <...> form. (For further details, see the
mail Re: C[++]: Normalizing include syntax ("" vs
<>).)
The UNO API include files should consistently use double quotes, for the benefit of external users of this API.
loplugin:includeform (compilerplugins/clang/includeform.cxx) enforces these rules.
Finding Out More
Beyond this, you can read the README.md files, send us patches, ask
on the mailing list libreoffice@lists.freedesktop.org (no subscription
required) or poke people on IRC #libreoffice-dev on irc.libera.chat -
we're a friendly and generally helpful mob. We know the code can be
hard to get into at first, and so there are no silly questions.
SAST Tools
PVS-Studio - static analyzer for C, C++, C#, and Java code.