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LibGemini: Implement rendering text/gemini documents to HTML
This also sets Content-Type to whatever 'meta' contains on success, to allow the browser to pick up what the document contains.
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8 changed files with 424 additions and 1 deletions
112
Libraries/LibGemini/Document.cpp
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112
Libraries/LibGemini/Document.cpp
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/*
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* Copyright (c) 2020, The SerenityOS developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/NonnullRefPtr.h>
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#include <AK/String.h>
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#include <AK/StringBuilder.h>
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#include <AK/Vector.h>
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#include <LibGemini/Document.h>
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namespace Gemini {
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String Document::render_to_html() const
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{
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StringBuilder html_builder;
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html_builder.append("<!DOCTYPE html>\n<html>\n");
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html_builder.append("<head>\n<title>");
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html_builder.append(m_url.path());
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html_builder.append("</title>\n</head>\n");
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html_builder.append("<body>\n");
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for (auto& line : m_lines) {
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html_builder.append(line.render_to_html());
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}
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html_builder.append("</body>");
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html_builder.append("</html>");
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return html_builder.build();
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}
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NonnullRefPtr<Document> Document::parse(const StringView& lines, const URL& url)
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{
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auto document = adopt(*new Document(url));
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document->read_lines(lines);
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return document;
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}
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void Document::read_lines(const StringView& source)
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{
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auto close_list_if_needed = [&] {
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if (m_inside_unordered_list) {
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m_inside_unordered_list = false;
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m_lines.append(make<Control>(Control::UnorderedListEnd));
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}
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};
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for (auto& line : source.lines()) {
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if (line.starts_with("```")) {
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close_list_if_needed();
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m_inside_preformatted_block = !m_inside_preformatted_block;
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if (m_inside_preformatted_block) {
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m_lines.append(make<Control>(Control::PreformattedStart));
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} else {
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m_lines.append(make<Control>(Control::PreformattedEnd));
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}
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}
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if (m_inside_preformatted_block) {
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m_lines.append(make<Preformatted>(move(line)));
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continue;
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}
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if (line.starts_with("*")) {
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if (!m_inside_unordered_list)
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m_lines.append(make<Control>(Control::UnorderedListStart));
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m_lines.append(make<UnorderedList>(move(line)));
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m_inside_unordered_list = true;
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continue;
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}
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close_list_if_needed();
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if (line.starts_with("=>")) {
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m_lines.append(make<Link>(move(line), *this));
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continue;
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}
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if (line.starts_with("#")) {
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size_t level = 0;
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while (line.length() > level && line[level] == '#')
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++level;
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m_lines.append(make<Heading>(move(line), level));
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continue;
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}
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m_lines.append(make<Text>(move(line)));
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}
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}
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}
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