mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-11-03 23:00:58 +00:00
98 lines
3 KiB
C++
98 lines
3 KiB
C++
/*
|
|
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/StringBuilder.h>
|
|
#include <AK/URL.h>
|
|
#include <LibWeb/HTML/Parser/HTMLTokenizer.h>
|
|
#include <LibWebView/SourceHighlighter.h>
|
|
|
|
namespace WebView {
|
|
|
|
String highlight_source(URL const& url, StringView source)
|
|
{
|
|
Web::HTML::HTMLTokenizer tokenizer { source, "utf-8"sv };
|
|
StringBuilder builder;
|
|
|
|
builder.append(R"~~~(
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta name="color-scheme" content="dark light">)~~~"sv);
|
|
|
|
builder.appendff("<title>View Source - {}</title>", url);
|
|
builder.appendff("<style type=\"text/css\">{}</style>", HTML_HIGHLIGHTER_STYLE);
|
|
builder.append(R"~~~(
|
|
</head>
|
|
<body>
|
|
<pre class="html">
|
|
)~~~"sv);
|
|
|
|
size_t previous_position = 0;
|
|
|
|
auto append_source = [&](auto end_position, Optional<StringView> const& class_name = {}) {
|
|
if (end_position <= previous_position)
|
|
return;
|
|
|
|
auto segment = source.substring_view(previous_position, end_position - previous_position);
|
|
|
|
if (class_name.has_value())
|
|
builder.appendff("<span class=\"{}\">"sv, *class_name);
|
|
|
|
for (auto code_point : Utf8View { segment }) {
|
|
if (code_point == '&')
|
|
builder.append("&"sv);
|
|
else if (code_point == 0xA0)
|
|
builder.append(" "sv);
|
|
else if (code_point == '<')
|
|
builder.append("<"sv);
|
|
else if (code_point == '>')
|
|
builder.append(">"sv);
|
|
else
|
|
builder.append_code_point(code_point);
|
|
}
|
|
|
|
if (class_name.has_value())
|
|
builder.append("</span>"sv);
|
|
|
|
previous_position = end_position;
|
|
};
|
|
|
|
for (auto token = tokenizer.next_token(); token.has_value(); token = tokenizer.next_token()) {
|
|
if (token->is_comment()) {
|
|
append_source(token->start_position().byte_offset);
|
|
append_source(token->end_position().byte_offset, "comment"sv);
|
|
} else if (token->is_start_tag() || token->is_end_tag()) {
|
|
auto tag_name_start = token->start_position().byte_offset;
|
|
|
|
append_source(tag_name_start);
|
|
append_source(tag_name_start + token->tag_name().bytes().size(), "tag"sv);
|
|
|
|
token->for_each_attribute([&](auto const& attribute) {
|
|
append_source(attribute.name_start_position.byte_offset);
|
|
append_source(attribute.name_end_position.byte_offset, "attribute-name"sv);
|
|
|
|
append_source(attribute.value_start_position.byte_offset);
|
|
append_source(attribute.value_end_position.byte_offset, "attribute-value"sv);
|
|
|
|
return IterationDecision::Continue;
|
|
});
|
|
|
|
append_source(token->end_position().byte_offset);
|
|
} else {
|
|
append_source(token->end_position().byte_offset);
|
|
}
|
|
}
|
|
|
|
builder.append(R"~~~(
|
|
</pre>
|
|
</body>
|
|
</html>
|
|
)~~~"sv);
|
|
|
|
return MUST(builder.to_string());
|
|
}
|
|
|
|
}
|