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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/net/url_parser.hh"
#include <cctype>
namespace ricochet::net {
std::expected<ParsedUrl, std::string> parse_url( std::string_view url )
{
std::string_view prefix = "http://";
if ( url.starts_with( "https://" ) ) {
prefix = "https://";
} else if ( url.starts_with( "http://" ) ) {
prefix = "http://";
} else {
return std::unexpected( "Only 'http://' or 'https://' URLs are supported." );
}
url.remove_prefix( prefix.length() );
const auto sep_pos = url.find_first_of( "/?#" );
ParsedUrl result;
if ( sep_pos == std::string_view::npos ) {
result.host = std::string( url );
result.path = "/";
} else {
result.host = std::string( url.substr( 0, sep_pos ) );
std::string_view path_view = url.substr( sep_pos );
const auto hash_pos = path_view.find( '#' );
if ( hash_pos != std::string_view::npos ) {
path_view = path_view.substr( 0, hash_pos );
}
result.path = std::string( path_view );
if ( result.path.empty() || result.path[0] != '/' ) {
result.path.insert( 0, "/" );
}
}
return result;
}
std::string extract_redirect_url( const std::string& raw_response, bool is_https, const std::string& host )
{
auto loc_pos = raw_response.find( "Location: " );
if ( loc_pos == std::string::npos ) {
loc_pos = raw_response.find( "location: " );
}
if ( loc_pos != std::string::npos ) {
loc_pos += 10;
auto end_pos = raw_response.find( '\r', loc_pos );
if ( end_pos == std::string::npos ) {
end_pos = raw_response.find( '\n', loc_pos );
}
if ( end_pos != std::string::npos ) {
std::string next_url = raw_response.substr( loc_pos, end_pos - loc_pos );
while ( !next_url.empty() && std::isspace( static_cast<unsigned char>( next_url.front() ) ) ) {
next_url.erase( 0, 1 );
}
if ( next_url.starts_with( "//" ) ) {
next_url = ( is_https ? "https:" : "http:" ) + next_url;
} else if ( next_url.starts_with( "/" ) ) {
next_url = ( is_https ? "https://" : "http://" ) + host + next_url;
}
return next_url;
}
}
return "";
}
} // namespace ricochet::net
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