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https://github.com/RGBCube/serenity
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a8946eb888
This fixes #7131 The parser already distinguishes between inline code (handled in Text.cpp) and triple-tick code blocks, so only CodeBlock::render_to_html() needed to change. Blank lines within a code block still cause issues, but that's an HTML issue. (#7121)
142 lines
3.1 KiB
C++
142 lines
3.1 KiB
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@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 <LibJS/MarkupGenerator.h>
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#include <LibMarkdown/CodeBlock.h>
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namespace Markdown {
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Text::Style CodeBlock::style() const
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{
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if (m_style_spec.spans().is_empty())
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return {};
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return m_style_spec.spans()[0].style;
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}
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String CodeBlock::style_language() const
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{
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if (m_style_spec.spans().is_empty())
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return {};
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return m_style_spec.spans()[0].text;
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}
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String CodeBlock::render_to_html() const
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{
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StringBuilder builder;
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String style_language = this->style_language();
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Text::Style style = this->style();
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builder.append("<pre>");
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if (style.strong)
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builder.append("<b>");
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if (style.emph)
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builder.append("<i>");
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if (style_language.is_empty())
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builder.append("<code>");
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else
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builder.appendff("<code class=\"{}\">", escape_html_entities(style_language));
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if (style_language == "js")
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builder.append(JS::MarkupGenerator::html_from_source(m_code));
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else
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builder.append(escape_html_entities(m_code));
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builder.append("</code>");
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if (style.emph)
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builder.append("</i>");
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if (style.strong)
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builder.append("</b>");
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builder.append("</pre>\n");
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return builder.build();
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}
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String CodeBlock::render_for_terminal(size_t) const
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{
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StringBuilder builder;
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Text::Style style = this->style();
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bool needs_styling = style.strong || style.emph;
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if (needs_styling) {
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builder.append("\033[");
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bool first = true;
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if (style.strong) {
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builder.append('1');
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first = false;
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}
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if (style.emph) {
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if (!first)
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builder.append(';');
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builder.append('4');
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}
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builder.append('m');
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}
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builder.append(m_code);
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if (needs_styling)
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builder.append("\033[0m");
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builder.append("\n\n");
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return builder.build();
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}
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OwnPtr<CodeBlock> CodeBlock::parse(Vector<StringView>::ConstIterator& lines)
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{
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if (lines.is_end())
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return {};
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constexpr auto tick_tick_tick = "```";
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StringView line = *lines;
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if (!line.starts_with(tick_tick_tick))
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return {};
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// Our Markdown extension: we allow
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// specifying a style and a language
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// for a code block, like so:
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//
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// ```**sh**
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// $ echo hello friends!
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// ````
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//
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// The code block will be made bold,
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// and if possible syntax-highlighted
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// as appropriate for a shell script.
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StringView style_spec = line.substring_view(3, line.length() - 3);
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auto spec = Text::parse(style_spec);
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if (!spec.has_value())
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return {};
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++lines;
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bool first = true;
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StringBuilder builder;
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while (true) {
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if (lines.is_end())
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break;
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line = *lines;
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++lines;
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if (line == tick_tick_tick)
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break;
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if (!first)
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builder.append('\n');
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builder.append(line);
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first = false;
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}
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return make<CodeBlock>(move(spec.value()), builder.build());
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}
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}
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