office-gobmx/xmloff
Caolán McNamara 92f5913aef cid#1556442 COPY_INSTEAD_OF_MOVE
and

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Change-Id: I001fb67e597b096e992fd8a0cd6f3ec577767c33
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176098
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
Tested-by: Jenkins
2024-11-06 13:58:54 +01:00
..
documentation xmloff: document the GutterAtTop Writer setting 2023-10-24 13:46:28 +02:00
dtd
inc loplugin:passstuffbyref in xmloff 2024-11-06 12:34:34 +01:00
qa new loplugin:staticconstexpr 2024-11-04 08:51:00 +01:00
source cid#1556442 COPY_INSTEAD_OF_MOVE 2024-11-06 13:58:54 +01:00
util
CppunitTest_xmloff_draw.mk
CppunitTest_xmloff_style.mk
CppunitTest_xmloff_text.mk sw floattable, per-frame wrap-on-all-pages mode: add ODT filter 2023-11-28 09:53:13 +01:00
CppunitTest_xmloff_uxmloff.mk
CustomTarget_generated.mk makefile simplification: replace $(call gb_CustomTarget_get_workdir,foo) 2024-05-03 16:06:14 +02:00
IwyuFilter_xmloff.yaml tdf#146619 Recheck xmloff/*cxx with IWYU 2024-03-12 10:37:31 +01:00
JunitTest_xmloff_unoapi.mk
Library_xo.mk
Library_xof.mk
Makefile
Module_xmloff.mk
Package_dtd.mk
README.md

ODF Import and Export Filter Logic

The main library "xo" contains the basic ODF import/export filter implementation for most applications. The document is accessed via its UNO API, which has the advantage that the same import/export code can be used for text in all applications (from/to Writer/EditEngine). The filter consumes/produces via SAX UNO API interface (implemented in "sax"). Various bits of the ODF filters are also implemented in applications, for example [git:sw/source/filter/xml].

There is a central list of all element or attribute names in [git:include/xmloff/xmltoken.hxx]. The main class of the import filter is SvXMLImport, and of the export filter SvXMLExport.

The Import filter maintains a stack of contexts for each element being read. There are many classes specific to particular elements, derived from SvXMLImportContext.

Note that for export several different versions of ODF are supported, with the default being the latest ODF version with "extensions", which means it may contain elements and attributes that are only in drafts of the specification or are not yet submitted for specification. Documents produced in the other (non-extended) ODF modes are supposed to be strictly conforming to the respective specification, i.e., only markup defined by the ODF specification is allowed.

There is another library "xof" built from the source/transform directory, which is the filter for the OpenOffice.org XML format. This legacy format is a predecessor of ODF and was the default in OpenOffice.org 1.x versions, which did not support ODF. This filter works as a SAX transformation from/to ODF, i.e., when importing a document the transform library reads the SAX events from the file and generates SAX events that are then consumed by the ODF import filter.

OpenOffice.org XML File Format

There is some stuff in the "dtd" directory which is most likely related to the OpenOffice.org XML format but is possibly outdated and obsolete.

Add New XML Tokens

When adding a new XML token, you need to add its entry in the following three files:

  • [git:include/xmloff/xmltoken.hxx]
  • [git:xmloff/source/core/xmltoken.cxx]
  • [git:xmloff/source/token/tokens.txt]