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/*
* Copyright (c) 2021, Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/StringBuilder.h>
#include <LibMarkdown/CommentBlock.h>
#include <LibMarkdown/Visitor.h>
namespace Markdown {
String CommentBlock::render_to_html(bool) const
{
StringBuilder builder;
builder.append("<!--");
builder.append(escape_html_entities(m_comment));
// TODO: This is probably incorrect, because we technically need to escape "--" in some form. However, Browser does not care about this.
builder.append("-->\n");
return builder.build();
}
String CommentBlock::render_for_terminal(size_t) const
{
return "";
}
RecursionDecision CommentBlock::walk(Visitor& visitor) const
{
RecursionDecision rd = visitor.visit(*this);
if (rd != RecursionDecision::Recurse)
return rd;
// Normalize return value.
return RecursionDecision::Continue;
}
OwnPtr<CommentBlock> CommentBlock::parse(LineIterator& lines)
{
if (lines.is_end())
return {};
constexpr auto comment_start = "<!--"sv;
constexpr auto comment_end = "-->"sv;
StringView line = *lines;
if (!line.starts_with(comment_start))
return {};
line = line.substring_view(comment_start.length());
StringBuilder builder;
while (true) {
// Invariant: At the beginning of the loop, `line` is valid and should be added the the builder.
bool ends_here = line.ends_with(comment_end);
if (ends_here)
line = line.substring_view(0, line.length() - comment_end.length());
builder.append(line);
if (!ends_here)
builder.append('\n');
++lines;
if (lines.is_end() || ends_here) {
break;
}
line = *lines;
}
return make<CommentBlock>(builder.build());
}
}
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