ClickHouse/dbms/src/Functions/path.cpp
alexey-milovidov 5b1eaba276
Every function in its own file, part 6 (#3661)
* Every function in its own file, part 6 [#CLICKHOUSE-2]

* Every function in its own file, part 6 [#CLICKHOUSE-2]

* Every function in its own file, part 6 [#CLICKHOUSE-2]
2018-11-26 02:24:26 +03:00

40 lines
1.0 KiB
C++

#include <Functions/FunctionFactory.h>
#include <Functions/FunctionStringToString.h>
#include <Functions/FunctionsURL.h>
#include <common/find_symbols.h>
namespace DB
{
struct ExtractPath
{
static size_t getReserveLengthForElement() { return 25; }
static void execute(Pos data, size_t size, Pos & res_data, size_t & res_size)
{
res_data = data;
res_size = 0;
Pos pos = data;
Pos end = pos + size;
if (end != (pos = find_first_symbols<'/'>(pos, end)) && pos[1] == '/' && end != (pos = find_first_symbols<'/'>(pos + 2, end)))
{
Pos query_string_or_fragment = find_first_symbols<'?', '#'>(pos, end);
res_data = pos;
res_size = query_string_or_fragment - res_data;
}
}
};
struct NamePath { static constexpr auto name = "path"; };
using FunctionPath = FunctionStringToString<ExtractSubstringImpl<ExtractPath>, NamePath>;
void registerFunctionPath(FunctionFactory & factory)
{
factory.registerFunction<FunctionPath>();
}
}