EPUB export: add support for page breaks

EPUB_SPLIT_METHOD is still hardcoded to HEADING, so while we send the
page break info to librevenge now, it's ignored on that end.

This requies basic infrastructure for automatic styles.

Change-Id: Ibafead0dedd9dbfa6223a9c701a62611ba2671fd
Reviewed-on: https://gerrit.libreoffice.org/41573
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>

8 files changed, 235 insertions, 3 deletions

diff --git a/writerperfect/Library_wpftwriter.mk b/writerperfect/Library_wpftwriter.mk
index 9cbef7f31309..67c1d999f887 100644
--- a/writerperfect/Library_wpftwriter.mk
+++ b/writerperfect/Library_wpftwriter.mk
@@ -78,6 +78,8 @@ $(eval $(call gb_Library_add_exception_objects,wpftwriter,\
 	writerperfect/source/writer/exp/XMLBase64ImportContext \
 	writerperfect/source/writer/exp/XMLTextFrameContext \
 	writerperfect/source/writer/exp/txtparai \
+	writerperfect/source/writer/exp/txtstyli \
+	writerperfect/source/writer/exp/xmlfmt \
 	writerperfect/source/writer/exp/xmlictxt \
 	writerperfect/source/writer/exp/xmlimp \
 	writerperfect/source/writer/exp/xmlmetai \
diff --git a/writerperfect/source/writer/exp/txtparai.cxx b/writerperfect/source/writer/exp/txtparai.cxx
index 600709d9fec8..e669cf89edf8 100644
--- a/writerperfect/source/writer/exp/txtparai.cxx
+++ b/writerperfect/source/writer/exp/txtparai.cxx
@@ -124,10 +124,23 @@ void XMLParaContext::startElement(const OUString &/*rName*/, const css::uno::Ref
     for (sal_Int16 i = 0; i < xAttribs->getLength(); ++i)
     {
         const OUString &rAttributeName = xAttribs->getNameByIndex(i);
-        if (rAttributeName != "text:style-name")
+        const OUString &rAttributeValue = xAttribs->getValueByIndex(i);
+        if (rAttributeName == "text:style-name")
+        {
+            // Reference to an automatic style, try to look it up.
+            auto itStyle = mrImport.GetAutomaticStyles().find(rAttributeValue);
+            if (itStyle == mrImport.GetAutomaticStyles().end())
+                continue;
+
+            // Apply properties directly, librevenge has no notion of automatic styles.
+            librevenge::RVNGPropertyList::Iter itProp(itStyle->second);
+            for (itProp.rewind(); itProp.next();)
+                aPropertyList.insert(itProp.key(), itProp());
+        }
+        else
         {
             OString sName = OUStringToOString(rAttributeName, RTL_TEXTENCODING_UTF8);
-            OString sValue = OUStringToOString(xAttribs->getValueByIndex(i), RTL_TEXTENCODING_UTF8);
+            OString sValue = OUStringToOString(rAttributeValue, RTL_TEXTENCODING_UTF8);
             aPropertyList.insert(sName.getStr(), sValue.getStr());
         }
     }
diff --git a/writerperfect/source/writer/exp/txtstyli.cxx b/writerperfect/source/writer/exp/txtstyli.cxx
new file mode 100644
index 000000000000..a7460a47c1b6
--- /dev/null
+++ b/writerperfect/source/writer/exp/txtstyli.cxx
@@ -0,0 +1,90 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include "txtstyli.hxx"
+
+#include "xmlimp.hxx"
+
+using namespace com::sun::star;
+
+namespace writerperfect
+{
+namespace exp
+{
+
+/// Handler for <style:paragraph-properties>.
+class XMLParagraphPropertiesContext : public XMLImportContext
+{
+public:
+    XMLParagraphPropertiesContext(XMLImport &rImport, XMLStyleContext &rStyle);
+
+    void SAL_CALL startElement(const OUString &rName, const css::uno::Reference<css::xml::sax::XAttributeList> &xAttribs) override;
+
+private:
+    XMLStyleContext &mrStyle;
+};
+
+XMLParagraphPropertiesContext::XMLParagraphPropertiesContext(XMLImport &rImport, XMLStyleContext &rStyle)
+    : XMLImportContext(rImport)
+    , mrStyle(rStyle)
+{
+}
+
+void XMLParagraphPropertiesContext::startElement(const OUString &/*rName*/, const css::uno::Reference<css::xml::sax::XAttributeList> &xAttribs)
+{
+    for (sal_Int16 i = 0; i < xAttribs->getLength(); ++i)
+    {
+        OString sName = OUStringToOString(xAttribs->getNameByIndex(i), RTL_TEXTENCODING_UTF8);
+        OString sValue = OUStringToOString(xAttribs->getValueByIndex(i), RTL_TEXTENCODING_UTF8);
+        mrStyle.GetPropertyList().insert(sName.getStr(), sValue.getStr());
+    }
+}
+
+XMLStyleContext::XMLStyleContext(XMLImport &rImport)
+    : XMLImportContext(rImport)
+{
+}
+
+XMLImportContext *XMLStyleContext::CreateChildContext(const OUString &rName, const css::uno::Reference<css::xml::sax::XAttributeList> &/*xAttribs*/)
+{
+    if (rName == "style:paragraph-properties")
+        return new XMLParagraphPropertiesContext(mrImport, *this);
+    return nullptr;
+}
+
+void XMLStyleContext::startElement(const OUString &/*rName*/, const css::uno::Reference<css::xml::sax::XAttributeList> &xAttribs)
+{
+    for (sal_Int16 i = 0; i < xAttribs->getLength(); ++i)
+    {
+        const OUString &rAttributeName = xAttribs->getNameByIndex(i);
+        if (rAttributeName == "style:name")
+        {
+            m_aName = xAttribs->getValueByIndex(i);
+            break;
+        }
+    }
+}
+
+void XMLStyleContext::endElement(const OUString &/*rName*/)
+{
+    if (m_aName.isEmpty())
+        return;
+
+    mrImport.GetAutomaticStyles()[m_aName] = m_aPropertyList;
+}
+
+librevenge::RVNGPropertyList &XMLStyleContext::GetPropertyList()
+{
+    return m_aPropertyList;
+}
+
+} // namespace exp
+} // namespace writerperfect
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/writerperfect/source/writer/exp/txtstyli.hxx b/writerperfect/source/writer/exp/txtstyli.hxx
new file mode 100644
index 000000000000..89d3483b7ba7
--- /dev/null
+++ b/writerperfect/source/writer/exp/txtstyli.hxx
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_WRITERPERFECT_SOURCE_WRITER_EXP_TXTSTYLI_HXX
+#define INCLUDED_WRITERPERFECT_SOURCE_WRITER_EXP_TXTSTYLI_HXX
+
+#include <librevenge/librevenge.h>
+
+#include "xmlictxt.hxx"
+
+namespace writerperfect
+{
+namespace exp
+{
+
+/// Handler for <style:style>.
+class XMLStyleContext : public XMLImportContext
+{
+public:
+    XMLStyleContext(XMLImport &rImport);
+
+    XMLImportContext *CreateChildContext(const OUString &rName, const css::uno::Reference<css::xml::sax::XAttributeList> &xAttribs) override;
+    void SAL_CALL startElement(const OUString &rName, const css::uno::Reference<css::xml::sax::XAttributeList> &xAttribs) override;
+    void SAL_CALL endElement(const OUString &rName) override;
+
+    librevenge::RVNGPropertyList &GetPropertyList();
+
+private:
+    OUString m_aName;
+    librevenge::RVNGPropertyList m_aPropertyList;
+};
+
+} // namespace exp
+} // namespace writerperfect
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/writerperfect/source/writer/exp/xmlfmt.cxx b/writerperfect/source/writer/exp/xmlfmt.cxx
new file mode 100644
index 000000000000..64fe313e2f08
--- /dev/null
+++ b/writerperfect/source/writer/exp/xmlfmt.cxx
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include "xmlfmt.hxx"
+
+#include "txtstyli.hxx"
+#include "xmlimp.hxx"
+
+using namespace com::sun::star;
+
+namespace writerperfect
+{
+namespace exp
+{
+
+XMLAutomaticStylesContext::XMLAutomaticStylesContext(XMLImport &rImport)
+    : XMLImportContext(rImport)
+{
+}
+
+XMLImportContext *XMLAutomaticStylesContext::CreateChildContext(const OUString &rName, const css::uno::Reference<css::xml::sax::XAttributeList> &/*xAttribs*/)
+{
+    if (rName == "style:style")
+        return new XMLStyleContext(mrImport);
+    return nullptr;
+}
+
+} // namespace exp
+} // namespace writerperfect
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/writerperfect/source/writer/exp/xmlfmt.hxx b/writerperfect/source/writer/exp/xmlfmt.hxx
new file mode 100644
index 000000000000..1ace95bc36a7
--- /dev/null
+++ b/writerperfect/source/writer/exp/xmlfmt.hxx
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_WRITERPERFECT_SOURCE_WRITER_EXP_XMLFMT_HXX
+#define INCLUDED_WRITERPERFECT_SOURCE_WRITER_EXP_XMLFMT_HXX
+
+#include <librevenge/librevenge.h>
+
+#include "xmlictxt.hxx"
+
+namespace writerperfect
+{
+namespace exp
+{
+
+/// Handler for <office:automatic-styles>.
+class XMLAutomaticStylesContext : public XMLImportContext
+{
+public:
+    XMLAutomaticStylesContext(XMLImport &rImport);
+
+    XMLImportContext *CreateChildContext(const OUString &rName, const css::uno::Reference<css::xml::sax::XAttributeList> &xAttribs) override;
+};
+
+} // namespace exp
+} // namespace writerperfect
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/writerperfect/source/writer/exp/xmlimp.cxx b/writerperfect/source/writer/exp/xmlimp.cxx
index 1b2365e16f5e..2fa46cdad98f 100644
--- a/writerperfect/source/writer/exp/xmlimp.cxx
+++ b/writerperfect/source/writer/exp/xmlimp.cxx
@@ -9,6 +9,7 @@
 
 #include "xmlimp.hxx"
 
+#include "xmlfmt.hxx"
 #include "xmlictxt.hxx"
 #include "xmlmetai.hxx"
 #include "xmltext.hxx"
@@ -61,6 +62,8 @@ XMLImportContext *XMLOfficeDocContext::CreateChildContext(const OUString &rName,
         return new XMLBodyContext(mrImport);
     else if (rName == "office:meta")
         return new XMLMetaDocumentContext(mrImport);
+    else if (rName == "office:automatic-styles")
+        return new XMLAutomaticStylesContext(mrImport);
     return nullptr;
 }
 
@@ -81,6 +84,11 @@ librevenge::RVNGTextInterface &XMLImport::GetGenerator() const
     return mrGenerator;
 }
 
+std::map<OUString, librevenge::RVNGPropertyList> &XMLImport::GetAutomaticStyles()
+{
+    return maAutomaticStyles;
+}
+
 void XMLImport::startDocument()
 {
     mrGenerator.startDocument(librevenge::RVNGPropertyList());
diff --git a/writerperfect/source/writer/exp/xmlimp.hxx b/writerperfect/source/writer/exp/xmlimp.hxx
index 6e6cc8c82491..5ba8d37c73aa 100644
--- a/writerperfect/source/writer/exp/xmlimp.hxx
+++ b/writerperfect/source/writer/exp/xmlimp.hxx
@@ -10,7 +10,7 @@
 #ifndef INCLUDED_WRITERPERFECT_SOURCE_WRITER_EXP_XMLIMP_HXX
 #define INCLUDED_WRITERPERFECT_SOURCE_WRITER_EXP_XMLIMP_HXX
 
-#include <memory>
+#include <map>
 #include <stack>
 
 #include <librevenge/librevenge.h>
@@ -35,6 +35,7 @@ class XMLImport : public cppu::WeakImplHelper
 {
     librevenge::RVNGTextInterface &mrGenerator;
     std::stack< rtl::Reference<XMLImportContext> > maContexts;
+    std::map<OUString, librevenge::RVNGPropertyList> maAutomaticStyles;
 
 public:
     XMLImport(librevenge::RVNGTextInterface &rGenerator);
@@ -42,6 +43,7 @@ public:
     XMLImportContext *CreateContext(const OUString &rName, const css::uno::Reference<css::xml::sax::XAttributeList> &xAttribs);
 
     librevenge::RVNGTextInterface &GetGenerator() const;
+    std::map<OUString, librevenge::RVNGPropertyList> &GetAutomaticStyles();
 
     // XDocumentHandler
     void SAL_CALL startDocument() override;