[search] Factor out feature::IsHouseNumber to separate files.

1 files changed, 38 insertions, 0 deletions

diff --git a/indexer/feature_impl.cpp b/indexer/feature_impl.cpp
new file mode 100644
index 0000000000..bcac11206c
--- /dev/null
+++ b/indexer/feature_impl.cpp
@@ -0,0 +1,38 @@
+#include "feature_impl.hpp"
+
+#include "../base/string_utils.hpp"
+
+
+namespace feature
+{
+
+bool IsDigit(int c)
+{
+  return (c <= 127 && isdigit(c));
+}
+
+bool IsNumber(strings::UniString const & s)
+{
+  for (size_t i = 0; i < s.size(); ++i)
+  {
+    // android production ndk-r8d has bug. "еда" detected as a number.
+    if (!IsDigit(s[i]))
+      return false;
+  }
+  return true;
+}
+
+/// Check that token can be house number.
+bool IsHouseNumber(strings::UniString const & s)
+{
+  size_t const count = s.size();
+  /// @todo Probably, call some check function from House::
+  return (count > 0 && count < 8 && IsDigit(s[0]));
+}
+
+bool IsHouseNumber(string const & s)
+{
+  return (!s.empty() && IsDigit(s[0]));
+}
+
+}