Maps URL Scheme API base parser

1 files changed, 92 insertions, 0 deletions

diff --git a/map/mwm_url.cpp b/map/mwm_url.cpp
new file mode 100644
index 0000000000..6a7541d638
--- /dev/null
+++ b/map/mwm_url.cpp
@@ -0,0 +1,92 @@
+#include "mwm_url.hpp"
+
+#include "../indexer/mercator.hpp"
+
+#include "../coding/uri.hpp"
+
+#include "../base/logging.hpp"
+#include "../base/string_utils.hpp"
+
+#include "../std/algorithm.hpp"
+#include "../std/bind.hpp"
+
+using namespace url_scheme;
+
+namespace
+{
+
+static int const INVALID_LAT_VALUE = -1000;
+
+bool IsInvalidApiPoint(ApiPoint const & p) { return p.m_lat == INVALID_LAT_VALUE; }
+
+}  // unnames namespace
+
+ParsedMapApi::ParsedMapApi(Uri const & uri)
+{
+  if (!Parse(uri))
+  {
+    m_points.clear();
+  }
+}
+
+bool ParsedMapApi::IsValid() const
+{
+  return !m_points.empty();
+}
+
+bool ParsedMapApi::Parse(Uri const & uri)
+{
+  if (uri.GetScheme() != "mapswithme" || uri.GetPath() != "map")
+    return false;
+
+  uri.ForEachKeyValue(bind(&ParsedMapApi::AddKeyValue, this, _1, _2));
+  m_points.erase(remove_if(m_points.begin(), m_points.end(), &IsInvalidApiPoint), m_points.end());
+
+  return true;
+}
+
+void ParsedMapApi::AddKeyValue(string const & key, string const & value)
+{
+  if (key == "ll")
+  {
+    m_points.push_back(ApiPoint());
+    m_points.back().m_lat = INVALID_LAT_VALUE;
+
+    size_t const firstComma = value.find(',');
+    if (firstComma == string::npos)
+    {
+      LOG(LWARNING, ("Map API: no comma between lat and lon for 'll' key", key, value));
+      return;
+    }
+
+    if (value.find(',', firstComma + 1) != string::npos)
+    {
+      LOG(LWARNING, ("Map API: more than one comma in a value for 'll' key", key, value));
+      return;
+    }
+
+    double lat, lon;
+    if (!strings::to_double(value.substr(0, firstComma), lat) ||
+        !strings::to_double(value.substr(firstComma + 1), lon))
+    {
+      LOG(LWARNING, ("Map API: can't parse lat,lon for 'll' key", key, value));
+      return;
+    }
+
+    if (!MercatorBounds::ValidLat(lat) || !MercatorBounds::ValidLon(lon))
+    {
+      LOG(LWARNING, ("Map API: incorrect value for lat and/or lon", key, value, lat, lon));
+      return;
+    }
+
+    m_points.back().m_lat = lat;
+    m_points.back().m_lon = lon;
+  }
+  else if (key == "n")
+  {
+    if (!m_points.empty())
+      m_points.back().m_title = value;
+    else
+      LOG(LWARNING, ("Map API: Point name with no point. 'll' should come first!"));
+  }
+}