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- /*
- * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #include <AK/StringBuilder.h>
- #include <LibMarkdown/MDCodeBlock.h>
- MDText::Style MDCodeBlock::style() const
- {
- if (m_style_spec.spans().is_empty())
- return {};
- return m_style_spec.spans()[0].style;
- }
- String MDCodeBlock::style_language() const
- {
- if (m_style_spec.spans().is_empty())
- return {};
- return m_style_spec.spans()[0].text;
- }
- String MDCodeBlock::render_to_html() const
- {
- StringBuilder builder;
- String style_language = this->style_language();
- MDText::Style style = this->style();
- if (style.strong)
- builder.append("<b>");
- if (style.emph)
- builder.append("<i>");
- if (style_language.is_null())
- builder.append("<code style=\"white-space: pre;\">");
- else
- builder.appendf("<code style=\"white-space: pre;\" class=\"%s\">", style_language.characters());
- // TODO: This should also be done in other places.
- for (size_t i = 0; i < m_code.length(); i++)
- if (m_code[i] == '<')
- builder.append("<");
- else if (m_code[i] == '>')
- builder.append(">");
- else if (m_code[i] == '&')
- builder.append("&");
- else
- builder.append(m_code[i]);
- builder.append("</code>");
- if (style.emph)
- builder.append("</i>");
- if (style.strong)
- builder.append("</b>");
- builder.append('\n');
- return builder.build();
- }
- String MDCodeBlock::render_for_terminal() const
- {
- StringBuilder builder;
- MDText::Style style = this->style();
- bool needs_styling = style.strong || style.emph;
- if (needs_styling) {
- builder.append("\033[");
- bool first = true;
- if (style.strong) {
- builder.append('1');
- first = false;
- }
- if (style.emph) {
- if (!first)
- builder.append(';');
- builder.append('4');
- }
- builder.append('m');
- }
- builder.append(m_code);
- if (needs_styling)
- builder.append("\033[0m");
- builder.append("\n\n");
- return builder.build();
- }
- bool MDCodeBlock::parse(Vector<StringView>::ConstIterator& lines)
- {
- if (lines.is_end())
- return false;
- constexpr auto tick_tick_tick = "```";
- StringView line = *lines;
- if (!line.starts_with(tick_tick_tick))
- return false;
- // Our Markdown extension: we allow
- // specifying a style and a language
- // for a code block, like so:
- //
- // ```**sh**
- // $ echo hello friends!
- // ````
- //
- // The code block will be made bold,
- // and if possible syntax-highlighted
- // as appropriate for a shell script.
- StringView style_spec = line.substring_view(3, line.length() - 3);
- bool success = m_style_spec.parse(style_spec);
- ASSERT(success);
- ++lines;
- bool first = true;
- StringBuilder builder;
- while (true) {
- if (lines.is_end())
- break;
- line = *lines;
- ++lines;
- if (line == tick_tick_tick)
- break;
- if (!first)
- builder.append('\n');
- builder.append(line);
- first = false;
- }
- m_code = builder.build();
- return true;
- }
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