fcloud/qtl.git - Gitblit

			@@ -20,7 +20,7 @@
			namespace mysql
			{

			#if MYSQL_VERSION_ID >=80000
			#if LIBMYSQL_VERSION_ID >=80000
			typedef bool my_bool;
			#endif //MySQL 8

			@@ -200,7 +200,6 @@
			public:
			error() : m_error(0) { }
			error(unsigned int err, const char* errmsg) : m_error(err), m_errmsg(errmsg) { }
			explicit error(unsigned int err) : m_error(err), m_errmsg(err_msg(err)) { }
			explicit error(statement& stmt);
			explicit error(database& db);
			error(const error& src) = default;
			@@ -210,13 +209,239 @@
			private:
			unsigned int m_error;
			std::string m_errmsg;

			#if MYSQL_VERSION_ID < 80000
			static const char* err_msg(int err) { return ER(err); }
			#else
			static const char* err_msg(int err) { return ER_CLIENT(err); }
			#endif
			};

			class blobbuf : public std::streambuf
			{
			public:
			blobbuf() : m_stmt(nullptr), m_field(0)
			{
			}
			blobbuf(const blobbuf&) = default;
			blobbuf& operator=(const blobbuf&) = default;
			virtual ~blobbuf()
			{
			overflow();
			}

			void open(MYSQL_STMT* stmt, int field, const binder& b, std::ios_base::openmode mode)
			{
			if (m_stmt && m_field)
			{
			overflow();
			}

			assert(stmt != nullptr);
			m_stmt = stmt;
			m_field = field;
			m_binder = b;
			size_t bufsize;
			if (b.length) m_size = *b.length;
			if (m_size > 0)
			bufsize = std::min<size_t>(blob_buffer_size, m_size);
			else
			bufsize = blob_buffer_size;
			if (mode&std::ios_base::in)
			{
			m_buf.resize(bufsize);
			m_pos = 0;
			setg(m_buf.data(), m_buf.data(), m_buf.data());
			}
			else if (mode&std::ios_base::out)
			{
			m_buf.resize(bufsize);
			m_pos = 0;
			setp(m_buf.data(), m_buf.data() + bufsize);
			}

			}

			protected:
			virtual pos_type seekoff(off_type off, std::ios_base::seekdir dir,
			std::ios_base::openmode which = std::ios_base::in \| std::ios_base::out) override
			{
			if (which&std::ios_base::in)
			{
			pos_type pos = 0;
			pos = seekoff(m_pos, off, dir);
			return seekpos(pos, which);
			}
			return std::streambuf::seekoff(off, dir, which);
			}

			virtual pos_type seekpos(pos_type pos,
			std::ios_base::openmode which = std::ios_base::in \| std::ios_base::out) override
			{
			if (pos >= m_size)
			return pos_type(off_type(-1));

			if (which&std::ios_base::out)
			{
			if (pos < m_pos \|\| pos >= m_pos + off_type(egptr() - pbase()))
			{
			overflow();
			m_pos = pos;
			setp(m_buf.data(), m_buf.data() + m_buf.size());
			}
			else
			{
			pbump(off_type(pos - pabs()));
			}
			}
			else if (which&std::ios_base::in)
			{
			if (pos < m_pos \|\| pos >= m_pos + off_type(epptr() - eback()))
			{
			m_pos = pos;
			setg(m_buf.data(), m_buf.data(), m_buf.data());
			}
			else
			{
			gbump(off_type(pos - gabs()));
			}
			}
			return pos;
			}

			virtual std::streamsize showmanyc() override
			{
			return m_size - pabs();
			}

			virtual int_type underflow() override
			{
			if (pptr() > pbase())
			overflow();

			off_type count = egptr() - eback();
			pos_type next_pos=0;
			if (count == 0 && eback() == m_buf.data())
			{
			setg(m_buf.data(), m_buf.data(), m_buf.data() + m_buf.size());
			count = m_buf.size();
			}
			else
			{
			next_pos = m_pos + pos_type(count);
			}
			if (next_pos >= m_size)
			return traits_type::eof();

			count = std::min(count, m_size - next_pos);
			m_binder.buffer = m_buf.data();
			m_binder.buffer_length = count;
			m_pos = next_pos;
			int ret = mysql_stmt_fetch_column(m_stmt, &m_binder, m_field, m_pos);
			switch (ret)
			{
			case 0:
			count = std::min(m_binder.buffer_length, *m_binder.length);
			setg(eback(), eback(), eback() + count);
			return traits_type::to_int_type(*gptr());
			case CR_NO_DATA:
			return traits_type::eof();
			default:
			throw error(mysql_stmt_errno(m_stmt), mysql_stmt_error(m_stmt));
			}
			}

			virtual int_type overflow(int_type ch = traits_type::eof()) override
			{
			if (pptr() != pbase())
			{
			size_t count = pptr() - pbase();
			int ret = mysql_stmt_send_long_data(m_stmt, m_field, pbase(), count);
			if (ret != 0)
			throw error(mysql_stmt_errno(m_stmt), mysql_stmt_error(m_stmt));

			//auto intersection = interval_intersection(m_pos, egptr() - eback(), m_pos, epptr() - pbase());
			//if (intersection.first != intersection.second)
			//{
			// commit(intersection.first, intersection.second);
			//}

			m_pos += count;
			setp(pbase(), epptr());
			}
			if (!traits_type::eq_int_type(ch, traits_type::eof()))
			{
			char_type c = traits_type::to_char_type(ch);
			if (m_pos >= m_size)
			return traits_type::eof();
			int ret = mysql_stmt_send_long_data(m_stmt, m_field, &c, 1);
			if (ret != 0)
			throw error(mysql_stmt_errno(m_stmt), mysql_stmt_error(m_stmt));

			//auto intersection = interval_intersection(m_pos, egptr() - eback(), m_pos, 1);
			//if (intersection.first != intersection.second)
			//{
			// eback()[intersection.first - m_pos] = c;
			//}
			m_pos += 1;

			}
			return ch;
			}

			virtual int_type pbackfail(int_type c = traits_type::eof()) override
			{
			if (gptr() == 0
			\|\| gptr() <= eback()
			\|\| (!traits_type::eq_int_type(traits_type::eof(), c)
			&& !traits_type::eq(traits_type::to_char_type(c), gptr()[-1])))
			{
			return (traits_type::eof()); // can't put back, fail
			}
			else
			{ // back up one position and store put-back character
			gbump(-1);
			if (!traits_type::eq_int_type(traits_type::eof(), c))
			*gptr() = traits_type::to_char_type(c);
			return (traits_type::not_eof(c));
			}
			}



			private:
			MYSQL_STMT* m_stmt;
			binder m_binder;
			int m_field;
			std::vector<char> m_buf;
			pos_type m_size;
			pos_type m_pos; //position in the input sequence

			off_type seekoff(off_type position, off_type off, std::ios_base::seekdir dir)
			{
			off_type result = 0;
			switch (dir)
			{
			case std::ios_base::beg:
			result = off;
			break;
			case std::ios_base::cur:
			result = position + off;
			break;
			case std::ios_base::end:
			result = m_size - off;
			}
			if (result > m_size)
			result = m_size;
			return result;
			}

			pos_type gabs() const // absolute offset of input pointer in blob field
			{
			return m_pos + off_type(gptr() - eback());
			}

			pos_type pabs() const // absolute offset of output pointer in blob field
			{
			return m_pos + off_type(pptr() - pbase());
			}
			};

			typedef std::function<void(std::ostream&)> blob_writer;

			class statement final
			{
			@@ -336,6 +561,17 @@
			};
			}

			void bind_param(size_t index, const blob_writer& param)
			{
			m_binders[index].bind(NULL, 0, MYSQL_TYPE_LONG_BLOB);
			m_binderAddins[index].m_after_fetch = [this, index, &param](const binder& b) {
			blobbuf buf;
			buf.open(m_stmt, index, b, std::ios::out);
			std::ostream s(&buf);
			param(s);
			};
			}

			template<class Param>
			void bind_param(size_t index, const Param& param)
			{
			@@ -396,7 +632,7 @@
			if(*b.is_null) value.clear();
			else value.truncate(*b.length);
			};
			m_binders[index].bind(data, field->length, field->type);
			m_binders[index].bind((void*)data, field->length, field->type);
			}
			}

			@@ -404,7 +640,9 @@
			{
			if(m_result)
			{
			m_binders[index].bind(NULL, 0, MYSQL_TYPE_LONG_BLOB);
			MYSQL_FIELD* field = mysql_fetch_field_direct(m_result, (unsigned int)index);
			assert(IS_LONGDATA(field->type));
			m_binders[index].bind(NULL, 0, field->type);
			m_binderAddins[index].m_after_fetch=[this, index, &value](const binder& b) {
			unsigned long readed=0;
			std::array<char, blob_buffer_size> buffer;
			@@ -424,6 +662,20 @@
			}
			}

			void bind_field(size_t index, blobbuf&& value)
			{
			if (m_result)
			{
			MYSQL_FIELD* field = mysql_fetch_field_direct(m_result, (unsigned int)index);
			assert(IS_LONGDATA(field->type));
			m_binders[index].bind(NULL, 0, field->type);
			m_binderAddins[index].m_after_fetch = [this, index, &value](const binder& b) {
			if (*b.is_null) return;
			value.open(m_stmt, index, b, std::ios::in);
			};
			}
			}

			template<typename Type>
			void bind_field(size_t index, indicator<Type>&& value)
			{