Mike Kaganski
64fe896867
Commit 67ba6ccd5a (tdf#140912, tdf#159219:
fix import of graphic placeholder with custom prompt, 2024-01-17) left
the prompt out of ODF for want of a representation, so a reload replaced
an authored one with our own localized default. It now travels as a
coext:placeholder-prompt attribute beside presentation:placeholder, on
draw:frame and draw:page-thumbnail, written when saving with extensions
and added to the extended schema so the round trip validates. It is
also listed in the Collabora ODF extensions notes.
Signed-off-by: Mike Kaganski <mike.kaganski@collabora.com>
Change-Id: I12b51ff2bc103e5c26e94558802064919c7289dd
Reviewed-on: https://gerrit.collaboraoffice.com/c/online/+/9070
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
Tested-by: Jenkins CPCI <releng@collaboraoffice.com>
(cherry picked from commit 6b1b6331ada0cc948e880eb83db5506f8bf1aa9c)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/210297
Tested-by: Jenkins
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
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]