1 files changed, 87 insertions, 0 deletions
diff --git a/src/net/url_parser.cc b/src/net/url_parser.cc
new file mode 100644
index 0000000..95e86ef
--- /dev/null
+++ b/src/net/url_parser.cc
@@ -0,0 +1,87 @@
+/*
+ * 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