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/*
* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
* Copyright (c) 2021, Peter Elliott <pelliott@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/StringBuilder.h>
#include <LibMarkdown/CodeBlock.h>
#include <LibMarkdown/Document.h>
#include <LibMarkdown/Heading.h>
#include <LibMarkdown/HorizontalRule.h>
#include <LibMarkdown/List.h>
#include <LibMarkdown/Paragraph.h>
#include <LibMarkdown/Table.h>
namespace Markdown {
String Document::render_to_html() const
{
StringBuilder builder;
builder.append("<!DOCTYPE html>\n");
builder.append("<html>\n");
builder.append("<head>\n");
builder.append("<style>\n");
builder.append("code { white-space: pre; }\n");
builder.append("</style>\n");
builder.append("</head>\n");
builder.append("<body>\n");
builder.append(render_to_inline_html());
builder.append("</body>\n");
builder.append("</html>\n");
return builder.build();
}
String Document::render_to_inline_html() const
{
StringBuilder builder;
for (auto& block : m_blocks) {
auto s = block.render_to_html();
builder.append(s);
}
return builder.build();
}
String Document::render_for_terminal(size_t view_width) const
{
StringBuilder builder;
for (auto& block : m_blocks) {
auto s = block.render_for_terminal(view_width);
builder.append(s);
}
return builder.build();
}
template<typename BlockType>
static bool helper(Vector<StringView>::ConstIterator& lines, NonnullOwnPtrVector<Block>& blocks)
{
OwnPtr<BlockType> block = BlockType::parse(lines);
if (!block)
return false;
blocks.append(block.release_nonnull());
return true;
}
OwnPtr<Document> Document::parse(const StringView& str)
{
const Vector<StringView> lines_vec = str.lines();
auto lines = lines_vec.begin();
auto document = make<Document>();
auto& blocks = document->m_blocks;
StringBuilder paragraph_text;
auto flush_paragraph = [&] {
if (paragraph_text.is_empty())
return;
auto paragraph = make<Paragraph>(Text::parse(paragraph_text.build()));
document->m_blocks.append(move(paragraph));
paragraph_text.clear();
};
while (true) {
if (lines.is_end())
break;
if ((*lines).is_empty()) {
++lines;
flush_paragraph();
continue;
}
bool any = helper<Table>(lines, blocks) || helper<List>(lines, blocks) || helper<CodeBlock>(lines, blocks)
|| helper<Heading>(lines, blocks) || helper<HorizontalRule>(lines, blocks);
if (any) {
if (!paragraph_text.is_empty()) {
auto last_block = document->m_blocks.take_last();
flush_paragraph();
document->m_blocks.append(move(last_block));
}
continue;
}
if (!paragraph_text.is_empty())
paragraph_text.append("\n");
paragraph_text.append(*lines++);
}
flush_paragraph();
return document;
}
}
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