Function escape_string_impl

src/escape_string.cpp:141–164

the offset is used to ignore the first characters in the unreserved_chars table.

	// the offset is used to ignore the first characters in the unreserved_chars table.
	std::string escape_string_impl(const char* str, int const len, int const offset)
	{
		TORRENT_ASSERT(str != nullptr);
		TORRENT_ASSERT(len >= 0);
		TORRENT_ASSERT(offset >= 0);
		TORRENT_ASSERT(offset < int(sizeof(unreserved_chars)) - 1);

		std::string ret;
		for (int i = 0; i < len; ++i)
		{
			if (std::strchr(unreserved_chars + offset, *str) && *str != 0)
			{
				ret += *str;
			}
			else
			{
				ret += '%';
				ret += aux::hex_chars[std::uint8_t(*str) >> 4];
				ret += aux::hex_chars[std::uint8_t(*str) & 15];
			}
			++str;
		}
		return ret;
	}

	} // anonymous namespace