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/*
Ousía
Copyright (C) 2014 Benjamin Paaßen, Andreas Stöckel
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <core/common/Exceptions.hpp>
#include <core/common/Rtti.hpp>
#include "DemoOutput.hpp"
namespace ousia {
namespace html {
void DemoHTMLTransformer::writeHTML(Handle<model::Document> doc,
std::ostream &out)
{
// write preamble
out << "<?xml version=\" 1.0 \"?>\n";
out << "<html>\n";
out << "\t<head>\n";
out << "\t\t<title>Test HTML Output for" << doc->getName() << "</title>\n";
out << "\t</head>\n";
out << "\t<body>\n";
// look for the book root node.
Rooted<model::StructuredEntity> root = doc->getRoot();
if (root->getDescriptor()->getName() != "book") {
throw OusiaException("The given documents root is no book node!");
}
// write it to HTML.
writeSection(root, out);
// write end
out << "\t</body>\n";
out << "</html>\n";
}
/**
* This is just for easier internal handling.
*/
enum class SectionType { BOOK, CHAPTER, SECTION, SUBSECTION, NONE };
SectionType getSectionType(const std::string &name)
{
if (name == "book") {
return SectionType::BOOK;
} else if (name == "chapter") {
return SectionType::CHAPTER;
} else if (name == "section") {
return SectionType::SECTION;
} else if (name == "subsection") {
return SectionType::SUBSECTION;
} else {
return SectionType::NONE;
}
}
void DemoHTMLTransformer::writeSection(Handle<model::StructuredEntity> sec,
std::ostream &out)
{
// check the section type.
SectionType type = getSectionType(sec->getDescriptor()->getName());
if (type == SectionType::NONE) {
// if the input node is no section, we ignore it.
return;
}
// get the fields.
std::vector<NodeVector<model::StructuredEntity>> &fields = sec->getFields();
// check if we have a heading.
if (fields.size() > 1 && fields[1].size() > 0) {
out << "\t\t";
switch (type) {
case SectionType::BOOK:
out << "<h1>";
break;
case SectionType::CHAPTER:
out << "<h2>";
break;
case SectionType::SECTION:
out << "<h3>";
break;
case SectionType::SUBSECTION:
out << "<h4>";
break;
case SectionType::NONE:
// this can not happen;
break;
}
// the second field marks the heading. So let's write it.
writeParagraph(fields[1][0], out, false);
// close the heading tag.
switch (type) {
case SectionType::BOOK:
out << "</h1>";
break;
case SectionType::CHAPTER:
out << "</h2>";
break;
case SectionType::SECTION:
out << "</h3>";
break;
case SectionType::SUBSECTION:
out << "</h4>";
break;
case SectionType::NONE:
// this can not happen;
break;
}
out << "\n";
}
// then write the section content recursively.
for (auto &n : fields[0]) {
/*
* Strictly speaking this is the wrong mechanism, because we would have
* to make an "isa" call here because we can not rely on our knowledge
* that paragraphs can only be paragraphs or lists. There would have
* to be a listener structure of transformations that check if they can
* transform this specific node.
*/
std::string childDescriptorName = n->getDescriptor()->getName();
if (childDescriptorName == "paragraph") {
writeParagraph(n, out);
// TODO: Implement
// } else if(childDescriptorName == "ul"){
// writeList(n, out);
} else {
writeSection(n, out);
}
}
}
void DemoHTMLTransformer::writeParagraph(Handle<model::StructuredEntity> par,
std::ostream &out, bool writePTags)
{
// validate descriptor.
if (par->getDescriptor()->getName() != "paragraph") {
throw OusiaException("Expected paragraph!");
}
// get the fields.
std::vector<NodeVector<model::StructuredEntity>> &fields = par->getFields();
// write heading if its there.
// check if we have a heading.
if (fields.size() > 1 && fields[1].size() > 0) {
// start the heading tag
out << "\t\t<h5>";
// the second field marks the heading. So let's write it.
writeParagraph(fields[1][0], out, false);
// close the heading tag.
out << "</h5>\n";
}
// write start tag
if (writePTags) {
out << "\t\t<p>";
}
// write content
// TODO: What about emphasis?
for (auto &text : fields[0]) {
if (text->getDescriptor()->getName() != "text") {
throw OusiaException("Expected text!");
}
Handle<model::DocumentPrimitive> primitive =
text->getFields()[0][0].cast<model::DocumentPrimitive>();
if (primitive == nullptr) {
throw OusiaException("Text field is not primitive!");
}
out << primitive->getContent().asString();
}
// write end tag
if (writePTags) {
out << "</p>\n";
}
}
}
}
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