Repo created

libs/coding/url.hpp

@@ -0,0 +1,64 @@
+#pragma once
+
+#include <string>
+#include <utility>
+#include <vector>
+
+// Note. This should be "namespace coding::url" according to
+// the style guide but we don't follow this convention here in
+// order to simplify the usage.
+namespace url
+{
+
+// Url in format: 'scheme://host/path?key1=value1&key2&key3=&key4=value4'
+// host - any string ('comaps.app' or 'search'), without any valid domain check
+class Url
+{
+public:
+  explicit Url(std::string const & url);
+  static Url FromString(std::string const & url);
+
+  bool IsValid() const { return !m_scheme.empty(); }
+
+  std::string const & GetScheme() const { return m_scheme; }
+  std::string const & GetHost() const { return m_host; }
+  std::string const & GetPath() const { return m_path; }
+  std::string GetHostAndPath() const { return m_host + '/' + m_path; }
+
+  template <class FnT>
+  void ForEachParam(FnT && fn) const
+  {
+    for (auto const & p : m_params)
+      fn(p.first, p.second);
+  }
+
+  using Param = std::pair<std::string, std::string>;
+  Param const * GetLastParam() const { return m_params.empty() ? nullptr : &m_params.back(); }
+  std::string const * GetParamValue(std::string const & name) const
+  {
+    for (auto const & p : m_params)
+      if (p.first == name)
+        return &p.second;
+    return nullptr;
+  }
+
+private:
+  bool Parse(std::string const & url);
+
+  std::string m_scheme, m_host, m_path;
+  std::vector<Param> m_params;
+};
+
+// Joins URL, appends/removes slashes if needed.
+std::string Join(std::string const & lhs, std::string const & rhs);
+
+template <typename... Args>
+std::string Join(std::string const & lhs, std::string const & rhs, Args &&... args)
+{
+  return Join(Join(lhs, rhs), std::forward<Args>(args)...);
+}
+
+std::string UrlEncode(std::string const & rawUrl);
+std::string UrlDecode(std::string_view encodedUrl);
+
+}  // namespace url