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#include "indexer/feature_impl.hpp"
#include "base/string_utils.hpp"
#include "base/logging.hpp"
#include "base/math.hpp"
namespace feature
{
bool IsDigit(int c)
{
return (int('0') <= c && c <= int('9'));
}
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;
}
bool IsStreetNumber(strings::UniString const & s)
{
size_t count = s.size();
if (count >= 2)
{
/// add different localities in future, if it's a problem.
string streetEndings [] = {"st", "nd", "rd", "th"};
for (size_t i = 0; i < ARRAY_SIZE(streetEndings); ++i)
{
size_t start = count - streetEndings[i].size();
bool flag = false;
for (size_t j = 0; j < streetEndings[i].size(); ++j)
{
if (streetEndings[i][j] != s[start + j])
{
flag = true;
break;
}
}
if (flag)
return false;
}
return true;
}
return false;
}
bool IsHouseNumberDeepCheck(strings::UniString const & s)
{
size_t const count = s.size();
if (count == 0)
return false;
if (!IsDigit(s[0]))
return false;
if (IsStreetNumber(s))
return false;
return (count < 8);
}
bool IsHouseNumber(string const & s)
{
return (!s.empty() && IsDigit(s[0]));
}
bool IsHouseNumber(strings::UniString const & s)
{
return (!s.empty() && IsDigit(s[0]));
}
uint8_t PopulationToRank(uint64_t p)
{
return static_cast<uint8_t>(min(0xFF, my::rounds(log(double(p)) / log(1.1))));
}
uint64_t RankToPopulation(uint8_t r)
{
return static_cast<uint64_t>(pow(1.1, r));
}
} // namespace feature
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