Source file mp_data_binary.ml
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let case_datetime_timestamp_date field_type v =
let length = Bitstring.bitstring_length v in
let parts =
if (length = 0) then
((0, 0, 0), (0, 0, 0, Int64.zero))
else
match%bitstring v with
| {| year : 2 * 8 : int, unsigned, littleendian;
rest : length - (2*8) : bitstring |} -> (
if (Bitstring.bitstring_length rest > 0) then
let length_rest = (Bitstring.bitstring_length rest) - (2*8) in
match%bitstring rest with
| {| month : 1 * 8 : int, unsigned, littleendian;
day : 1 * 8 : int, unsigned, littleendian;
rest : length_rest : bitstring |} -> (
if (Bitstring.bitstring_length rest > 0) then
let length_rest = (Bitstring.bitstring_length rest) - (3*8) in
match%bitstring rest with
| {| hour : 1 * 8 : int, unsigned, littleendian;
min : 1 * 8 : int, unsigned, littleendian;
sec : 1 * 8 : int, unsigned, littleendian;
rest : length_rest : bitstring |} -> (
if (Bitstring.bitstring_length rest > 0) then
match%bitstring rest with
| {| subsecond : Mp_bitstring.compute32 : int, unsigned, littleendian |} -> (
((year, month, day), (hour, min, sec, subsecond))
)
else
((year, month, day), (hour, min, sec, Int64.zero))
)
else
((year, month, day), (0, 0, 0, Int64.zero))
)
else
((year, 0, 0), (0, 0, 0, Int64.zero))
)
in
let ((year, month, day), (hour, min, sec, subsec)) = parts in
match field_type with
| Mp_field_packet.Field_type_datetime -> Mp_data.data_datetime ((year, month, day), (hour, min, sec, subsec))
| Mp_field_packet.Field_type_timestamp -> Mp_data.data_timestamp ((year, month, day), (hour, min, sec, subsec))
| Mp_field_packet.Field_type_date -> Mp_data.data_date (year, month, day)
| _ -> assert false
let data_value_to_sql_value_date_time_types field_type v =
match field_type with
| Mp_field_packet.Field_type_datetime -> case_datetime_timestamp_date field_type v
| Mp_field_packet.Field_type_timestamp -> case_datetime_timestamp_date field_type v
| Mp_field_packet.Field_type_date -> case_datetime_timestamp_date field_type v
| Mp_field_packet.Field_type_time -> (
let length = Bitstring.bitstring_length v in
if (length = 0) then
Mp_data.data_time (Mp_data.Positive, 0, 0, 0, Int64.zero)
else
match%bitstring v with
| {| sign : 1 * 8 : int, unsigned, littleendian;
rest : length - 8 : bitstring |} -> (
let pos_or_neg =
match sign with
| 1 -> Mp_data.Negative
| 0 -> Mp_data.Positive
| _ -> assert false
in
if (Bitstring.bitstring_length rest > 0) then
let length_rest = (Bitstring.bitstring_length rest) - Mp_bitstring.compute32 in
match%bitstring rest with
| {| day : Mp_bitstring.compute32 : int, unsigned, littleendian;
rest : length_rest : bitstring |} -> (
let hour_day = Int64.mul day (Int64.of_int 24) in
let hour_day = Int64.to_int hour_day in
if (Bitstring.bitstring_length rest > 0) then
let length_rest = (Bitstring.bitstring_length rest) - (3*8) in
match%bitstring rest with
| {| hour : 1 * 8 : int, unsigned, littleendian;
min : 1 * 8 : int, unsigned, littleendian;
sec : 1 * 8 : int, unsigned, littleendian;
rest : length_rest : bitstring |} -> (
if (Bitstring.bitstring_length rest > 0) then
match%bitstring rest with
| {| subsecond : Mp_bitstring.compute32 : int, unsigned, littleendian |} -> (
Mp_data.data_time (pos_or_neg, hour + hour_day, min, sec, subsecond)
)
else
Mp_data.data_time (pos_or_neg, hour + hour_day, min, sec, Int64.zero)
)
else
Mp_data.data_time (pos_or_neg, 0 + hour_day, 0, 0, Int64.zero)
)
else
Mp_data.data_time (pos_or_neg, 0, 0, 0, Int64.zero)
)
)
| _ -> assert false
let data_value_to_sql_value v field =
let field_type = field.Mp_field_packet.field_type in
match field_type with
| Mp_field_packet.Field_type_null -> Mp_data.data_null
| Mp_field_packet.Field_type_longlong -> (
match%bitstring v with
| {| d : 8 * 8 : int, littleendian |} ->
let field_flags = field.Mp_field_packet.field_flags in
let bi = Big_int.big_int_of_int64 d in
let bi =
if ( (List.mem Mp_field_packet.Field_flag_unsigned field_flags)
&& (Big_int.sign_big_int bi = -1) ) then
Big_int.add_big_int (Big_int.power_int_positive_int 2 64) bi
else
bi
in
Mp_data.data_longlongint bi
)
| Mp_field_packet.Field_type_long -> (
let field_flags = field.Mp_field_packet.field_flags in
match%bitstring v with
| {| d : Mp_bitstring.compute32 : int, littleendian |} ->
if (List.mem Mp_field_packet.Field_flag_unsigned field_flags) then
Mp_data.data_longint d
else
if (Int64.compare d (Int64.of_string "2147483647") > 0) then
Mp_data.data_longint (Int64.sub d (Int64.of_string "4294967296"))
else
Mp_data.data_longint d
)
| Mp_field_packet.Field_type_short -> (
let field_flags = field.Mp_field_packet.field_flags in
match%bitstring v with
| {| d : 2 * 8 : int, littleendian |} ->
if (List.mem Mp_field_packet.Field_flag_unsigned field_flags) then
Mp_data.data_smallint d
else
if (d > 32767) then
Mp_data.data_smallint (d - 65536)
else
Mp_data.data_smallint d
)
| Mp_field_packet.Field_type_tiny -> (
let field_flags = field.Mp_field_packet.field_flags in
match%bitstring v with
| {| d : 1 * 8 : int, littleendian |} ->
if (List.mem Mp_field_packet.Field_flag_unsigned field_flags) then
Mp_data.data_tinyint d
else
if (d > 127) then
Mp_data.data_tinyint (d - 256)
else
Mp_data.data_tinyint d
)
| Mp_field_packet.Field_type_float -> (
match%bitstring v with
| {| d : 4 * 8 : int, littleendian |} ->
Mp_data.data_float (Int32.float_of_bits d)
)
| Mp_field_packet.Field_type_double -> (
match%bitstring v with
| {| d : 8 * 8 : int, littleendian |} ->
Mp_data.data_double (Int64.float_of_bits d)
)
| Mp_field_packet.Field_type_int24 -> (
let field_flags = field.Mp_field_packet.field_flags in
match%bitstring v with
| {| d : 3 * 8 : int, littleendian |} ->
if (List.mem Mp_field_packet.Field_flag_unsigned field_flags) then
Mp_data.data_int24 d
else
if (d > 8388607) then
Mp_data.data_int24 (d - 16777216)
else
Mp_data.data_int24 d
)
| Mp_field_packet.Field_type_year -> (
match%bitstring v with
| {| d : 2 * 8 : int, littleendian |} ->
Mp_data.data_year d
)
| Mp_field_packet.Field_type_newdecimal -> (
let length = Bitstring.bitstring_length v in
let nb_bytes = length / 8 in
match%bitstring v with
| {| d : length : string |} ->
let decimals = field.Mp_field_packet.field_decimals in
let part_i_s = String.sub d 0 (nb_bytes - 1 - decimals) in
let part_d_s = String.sub d (nb_bytes - decimals) decimals in
let i = part_i_s ^ part_d_s in
let i = Big_int.big_int_of_string i in
let i = Num.num_of_big_int i in
let div = Big_int.power_int_positive_int 10 decimals in
let div = Num.num_of_big_int div in
Mp_data.data_decimal (Num.div_num i div)
)
| Mp_field_packet.Field_type_string -> (
let length = Bitstring.bitstring_length v in
match%bitstring v with
| {| d : length : string |} -> (
let field_flags = field.Mp_field_packet.field_flags in
if (List.mem Mp_field_packet.Field_flag_enum field_flags) then
Mp_data.data_enum d
else if (List.mem Mp_field_packet.Field_flag_set field_flags) then
Mp_data.data_set d
else if (List.mem Mp_field_packet.Field_flag_binary field_flags) then
let b = Buffer.create (String.length d) in
let () = Buffer.add_string b d in
Mp_data.data_binary b
else
Mp_data.data_string d
)
)
| Mp_field_packet.Field_type_set -> (
let length = Bitstring.bitstring_length v in
match%bitstring v with
| {| d : length : string |} ->
Mp_data.data_set d
)
| Mp_field_packet.Field_type_enum -> (
let length = Bitstring.bitstring_length v in
match%bitstring v with
| {| d : length : string |} ->
Mp_data.data_enum d
)
| Mp_field_packet.Field_type_var_string -> (
let length = Bitstring.bitstring_length v in
match%bitstring v with
| {| d : length : string |} ->
let field_flags = field.Mp_field_packet.field_flags in
if (List.mem Mp_field_packet.Field_flag_binary field_flags) then
let b = Buffer.create (String.length d) in
let () = Buffer.add_string b d in
Mp_data.data_varbinary b
else
Mp_data.data_varstring d
)
| Mp_field_packet.Field_type_varchar -> (
let length = Bitstring.bitstring_length v in
match%bitstring v with
| {| d : length : string |} -> Mp_data.data_varchar d
)
| Mp_field_packet.Field_type_bit -> (
let length = Bitstring.bitstring_length v in
match%bitstring v with
| {| d : length : bitstring |} -> Mp_data.data_bit d
)
| Mp_field_packet.Field_type_tiny_blob
| Mp_field_packet.Field_type_medium_blob
| Mp_field_packet.Field_type_long_blob
| Mp_field_packet.Field_type_blob -> (
let length = Bitstring.bitstring_length v in
match%bitstring v with
| {| d : length : string |} ->
let b = Buffer.create length in
let () = Buffer.add_string b d in
Mp_data.data_blob b
)
| Mp_field_packet.Field_type_geometry ->
Mp_data.data_geometry v
| Mp_field_packet.Field_type_datetime
| Mp_field_packet.Field_type_timestamp
| Mp_field_packet.Field_type_date
| Mp_field_packet.Field_type_time ->
data_value_to_sql_value_date_time_types field_type v