mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-05-04 18:23:39 +00:00
9c0563cc10
Hard line breaks insert a <br /> when two spaces are at the end of a line. soft line breaks are just regular newlines, but whitespace is now stripped before and after them
122 lines
3 KiB
C++
122 lines
3 KiB
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
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* Copyright (c) 2021, Peter Elliott <pelliott@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringBuilder.h>
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#include <LibMarkdown/CodeBlock.h>
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#include <LibMarkdown/Document.h>
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#include <LibMarkdown/Heading.h>
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#include <LibMarkdown/HorizontalRule.h>
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#include <LibMarkdown/List.h>
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#include <LibMarkdown/Paragraph.h>
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#include <LibMarkdown/Table.h>
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namespace Markdown {
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String Document::render_to_html() const
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{
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StringBuilder builder;
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builder.append("<!DOCTYPE html>\n");
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builder.append("<html>\n");
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builder.append("<head>\n");
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builder.append("<style>\n");
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builder.append("code { white-space: pre; }\n");
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builder.append("</style>\n");
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builder.append("</head>\n");
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builder.append("<body>\n");
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builder.append(render_to_inline_html());
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builder.append("</body>\n");
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builder.append("</html>\n");
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return builder.build();
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}
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String Document::render_to_inline_html() const
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{
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StringBuilder builder;
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for (auto& block : m_blocks) {
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auto s = block.render_to_html();
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builder.append(s);
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}
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return builder.build();
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}
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String Document::render_for_terminal(size_t view_width) const
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{
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StringBuilder builder;
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for (auto& block : m_blocks) {
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auto s = block.render_for_terminal(view_width);
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builder.append(s);
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}
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return builder.build();
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}
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template<typename BlockType>
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static bool helper(Vector<StringView>::ConstIterator& lines, NonnullOwnPtrVector<Block>& blocks)
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{
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OwnPtr<BlockType> block = BlockType::parse(lines);
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if (!block)
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return false;
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blocks.append(block.release_nonnull());
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return true;
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}
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OwnPtr<Document> Document::parse(const StringView& str)
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{
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const Vector<StringView> lines_vec = str.lines();
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auto lines = lines_vec.begin();
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auto document = make<Document>();
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auto& blocks = document->m_blocks;
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StringBuilder paragraph_text;
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auto flush_paragraph = [&] {
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if (paragraph_text.is_empty())
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return;
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auto paragraph = make<Paragraph>(Text::parse(paragraph_text.build()));
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document->m_blocks.append(move(paragraph));
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paragraph_text.clear();
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};
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while (true) {
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if (lines.is_end())
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break;
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if ((*lines).is_empty()) {
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++lines;
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flush_paragraph();
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continue;
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}
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bool any = helper<Table>(lines, blocks) || helper<List>(lines, blocks) || helper<CodeBlock>(lines, blocks)
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|| helper<Heading>(lines, blocks) || helper<HorizontalRule>(lines, blocks);
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if (any) {
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if (!paragraph_text.is_empty()) {
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auto last_block = document->m_blocks.take_last();
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flush_paragraph();
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document->m_blocks.append(move(last_block));
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}
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continue;
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}
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if (!paragraph_text.is_empty())
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paragraph_text.append("\n");
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paragraph_text.append(*lines++);
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}
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flush_paragraph();
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return document;
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}
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}
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