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/*
* Ricochet - A minimalist CLI web browser for fast, distraction-free navigation.
* Copyright (C) 2026 Richard Qin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "ricochet/render/renderer.hh"
#include <array>
namespace ricochet::render {
namespace {
std::string decode_entities( std::string text ) // NOLINT(readability-convert-member-functions-to-static)
{
constexpr std::array<std::pair<std::string_view, std::string_view>, 24> entities
= { { { " ", " " }, { "<", "<" }, { ">", ">" }, { "&", "&" }, { """, "\"" },
{ "©", "©" }, { "®", "®" }, { "™", "™" }, { "€", "€" }, { "£", "£" },
{ "¥", "¥" }, { "¢", "¢" }, { "§", "§" }, { "¶", "¶" }, { "…", "…" },
{ "†", "†" }, { "‡", "‡" }, { "•", "•" }, { "′", "′" }, { "″", "″" },
{ "‹", "‹" }, { "›", "›" }, { "‾", "‾" }, { "⁄", "⁄" } } };
for ( const auto& [entity, replacement] : entities ) {
std::size_t pos = 0;
while ( ( pos = text.find( entity, pos ) ) != std::string::npos ) {
text.replace( pos, entity.length(), replacement );
pos += replacement.length();
}
}
return text;
}
std::string extract_href( const std::string& tag_name )
{
std::size_t pos = tag_name.find( "href=\"" );
if ( pos != std::string::npos ) {
pos += 6;
const std::size_t end = tag_name.find( '\"', pos );
if ( end != std::string::npos ) {
return tag_name.substr( pos, end - pos );
}
}
pos = tag_name.find( "href='" );
if ( pos != std::string::npos ) {
pos += 6;
const std::size_t end = tag_name.find( '\'', pos );
if ( end != std::string::npos ) {
return tag_name.substr( pos, end - pos );
}
}
return "";
}
void render_node( const parser::DomNode& node, // NOLINT(misc-no-recursion)
std::string& output,
std::vector<std::string>& links )
{
const std::size_t space_pos = node.tag_name.find( ' ' );
const std::string base_tag
= ( space_pos == std::string::npos ) ? node.tag_name : node.tag_name.substr( 0, space_pos );
if ( base_tag == "head" || base_tag == "style" || base_tag == "script" || base_tag == "meta"
|| base_tag == "title" || base_tag == "link" ) {
return;
}
if ( base_tag.empty() ) {
output += decode_entities( node.text_content );
return;
}
const bool is_header = ( base_tag == "h1" || base_tag == "h2" || base_tag == "h3" || base_tag == "h4" );
const bool is_link = ( base_tag == "a" );
if ( is_header ) {
output += "\n\n\033[1;31m";
} else if ( is_link ) {
output += "\033[4;34m"; // 【核心修复】：必须是 output += ，绝对不能用 std::cout
} else if ( base_tag == "p" || base_tag == "div" || is_header ) {
if ( !output.empty() && output.back() != '\n' ) {
output += "\n";
}
}
for ( const auto& child : node.children ) {
render_node( child, output, links );
}
if ( is_header ) {
output += "\033[0m";
} else if ( is_link ) {
output += "\033[0m";
const std::string href = extract_href( node.tag_name );
if ( !href.empty() && !href.starts_with( "javascript:" ) && !href.starts_with( "#" ) ) {
links.push_back( href );
output += " \033[7m[" + std::to_string( links.size() ) + "]\033[0m"; // 打印数字标签！
}
}
if ( base_tag == "h1" || base_tag == "p" || base_tag == "div" ) {
output += "\n";
}
}
} // namespace
RenderResult Renderer::render( // NOLINT(readability-convert-member-functions-to-static)
const parser::DomNode& node ) const
{
RenderResult result;
render_node( node, result.text, result.links );
return result;
}
} // namespace ricochet::render
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