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extern crate chrono; extern crate mysqlclient_sys as ffi; use self::chrono::*; use std::io::Write; use std::os::raw as libc; use std::{mem, ptr, slice}; use deserialize::{self, FromSql}; use mysql::Mysql; use serialize::{self, IsNull, Output, ToSql}; use sql_types::{Date, Datetime, Time, Timestamp}; macro_rules! mysql_time_impls { ($ty:ty) => { impl ToSql<$ty, Mysql> for ffi::MYSQL_TIME { fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result { let bytes = unsafe { let bytes_ptr = self as *const ffi::MYSQL_TIME as *const u8; slice::from_raw_parts(bytes_ptr, mem::size_of::<ffi::MYSQL_TIME>()) }; out.write_all(bytes)?; Ok(IsNull::No) } } impl FromSql<$ty, Mysql> for ffi::MYSQL_TIME { fn from_sql(bytes: Option<&[u8]>) -> deserialize::Result<Self> { let bytes = not_none!(bytes); let bytes_ptr = bytes.as_ptr() as *const ffi::MYSQL_TIME; unsafe { let mut result = mem::uninitialized(); ptr::copy_nonoverlapping(bytes_ptr, &mut result, 1); if result.neg == 0 { Ok(result) } else { Err("Negative dates/times are not yet supported".into()) } } } } } } mysql_time_impls!(Datetime); mysql_time_impls!(Timestamp); mysql_time_impls!(Time); mysql_time_impls!(Date); impl ToSql<Datetime, Mysql> for NaiveDateTime { fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result { <NaiveDateTime as ToSql<Timestamp, Mysql>>::to_sql(self, out) } } impl FromSql<Datetime, Mysql> for NaiveDateTime { fn from_sql(bytes: Option<&[u8]>) -> deserialize::Result<Self> { <NaiveDateTime as FromSql<Timestamp, Mysql>>::from_sql(bytes) } } impl ToSql<Timestamp, Mysql> for NaiveDateTime { fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result { let mut mysql_time: ffi::MYSQL_TIME = unsafe { mem::zeroed() }; mysql_time.year = self.year() as libc::c_uint; mysql_time.month = self.month() as libc::c_uint; mysql_time.day = self.day() as libc::c_uint; mysql_time.hour = self.hour() as libc::c_uint; mysql_time.minute = self.minute() as libc::c_uint; mysql_time.second = self.second() as libc::c_uint; mysql_time.second_part = libc::c_ulong::from(self.timestamp_subsec_micros()); <ffi::MYSQL_TIME as ToSql<Timestamp, Mysql>>::to_sql(&mysql_time, out) } } impl FromSql<Timestamp, Mysql> for NaiveDateTime { fn from_sql(bytes: Option<&[u8]>) -> deserialize::Result<Self> { let mysql_time = <ffi::MYSQL_TIME as FromSql<Timestamp, Mysql>>::from_sql(bytes)?; NaiveDate::from_ymd_opt( mysql_time.year as i32, mysql_time.month as u32, mysql_time.day as u32, ).and_then(|v| { v.and_hms_micro_opt( mysql_time.hour as u32, mysql_time.minute as u32, mysql_time.second as u32, mysql_time.second_part as u32, ) }) .ok_or_else(|| format!("Cannot parse this date: {:?}", mysql_time).into()) } } impl ToSql<Time, Mysql> for NaiveTime { fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result { let mut mysql_time: ffi::MYSQL_TIME = unsafe { mem::zeroed() }; mysql_time.hour = self.hour() as libc::c_uint; mysql_time.minute = self.minute() as libc::c_uint; mysql_time.second = self.second() as libc::c_uint; <ffi::MYSQL_TIME as ToSql<Time, Mysql>>::to_sql(&mysql_time, out) } } impl FromSql<Time, Mysql> for NaiveTime { fn from_sql(bytes: Option<&[u8]>) -> deserialize::Result<Self> { let mysql_time = <ffi::MYSQL_TIME as FromSql<Time, Mysql>>::from_sql(bytes)?; NaiveTime::from_hms_opt( mysql_time.hour as u32, mysql_time.minute as u32, mysql_time.second as u32, ).ok_or_else(|| format!("Unable to convert {:?} to chrono", mysql_time).into()) } } impl ToSql<Date, Mysql> for NaiveDate { fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result { let mut mysql_time: ffi::MYSQL_TIME = unsafe { mem::zeroed() }; mysql_time.year = self.year() as libc::c_uint; mysql_time.month = self.month() as libc::c_uint; mysql_time.day = self.day() as libc::c_uint; <ffi::MYSQL_TIME as ToSql<Date, Mysql>>::to_sql(&mysql_time, out) } } impl FromSql<Date, Mysql> for NaiveDate { fn from_sql(bytes: Option<&[u8]>) -> deserialize::Result<Self> { let mysql_time = <ffi::MYSQL_TIME as FromSql<Date, Mysql>>::from_sql(bytes)?; NaiveDate::from_ymd_opt( mysql_time.year as i32, mysql_time.month as u32, mysql_time.day as u32, ).ok_or_else(|| format!("Unable to convert {:?} to chrono", mysql_time).into()) } } #[cfg(test)] mod tests { extern crate chrono; extern crate dotenv; use self::chrono::{Duration, NaiveDate, NaiveTime, Utc}; use self::dotenv::dotenv; use dsl::{now, sql}; use prelude::*; use select; use sql_types::{Date, Datetime, Time, Timestamp}; fn connection() -> MysqlConnection { dotenv().ok(); let connection_url = ::std::env::var("MYSQL_UNIT_TEST_DATABASE_URL") .or_else(|_| ::std::env::var("MYSQL_DATABASE_URL")) .or_else(|_| ::std::env::var("DATABASE_URL")) .expect("DATABASE_URL must be set in order to run tests"); MysqlConnection::establish(&connection_url).unwrap() } #[test] fn unix_epoch_encodes_correctly() { let connection = connection(); let time = NaiveDate::from_ymd(1970, 1, 1).and_hms(0, 0, 0); let query = select(sql::<Timestamp>("CAST('1970-01-01' AS DATETIME)").eq(time)); assert!(query.get_result::<bool>(&connection).unwrap()); let query = select(sql::<Datetime>("CAST('1970-01-01' AS DATETIME)").eq(time)); assert!(query.get_result::<bool>(&connection).unwrap()); } #[test] fn unix_epoch_decodes_correctly() { let connection = connection(); let time = NaiveDate::from_ymd(1970, 1, 1).and_hms(0, 0, 0); let epoch_from_sql = select(sql::<Timestamp>("CAST('1970-01-01' AS DATETIME)")).get_result(&connection); assert_eq!(Ok(time), epoch_from_sql); let epoch_from_sql = select(sql::<Datetime>("CAST('1970-01-01' AS DATETIME)")).get_result(&connection); assert_eq!(Ok(time), epoch_from_sql); } #[test] fn times_relative_to_now_encode_correctly() { let connection = connection(); let time = Utc::now().naive_utc() + Duration::days(1); let query = select(now.lt(time)); assert!(query.get_result::<bool>(&connection).unwrap()); let time = Utc::now().naive_utc() - Duration::days(1); let query = select(now.gt(time)); assert!(query.get_result::<bool>(&connection).unwrap()); } #[test] fn times_of_day_encode_correctly() { let connection = connection(); let midnight = NaiveTime::from_hms(0, 0, 0); let query = select(sql::<Time>("CAST('00:00:00' AS TIME)").eq(midnight)); assert!(query.get_result::<bool>(&connection).unwrap()); let noon = NaiveTime::from_hms(12, 0, 0); let query = select(sql::<Time>("CAST('12:00:00' AS TIME)").eq(noon)); assert!(query.get_result::<bool>(&connection).unwrap()); let roughly_half_past_eleven = NaiveTime::from_hms(23, 37, 4); let query = select(sql::<Time>("CAST('23:37:04' AS TIME)").eq(roughly_half_past_eleven)); assert!(query.get_result::<bool>(&connection).unwrap()); } #[test] fn times_of_day_decode_correctly() { let connection = connection(); let midnight = NaiveTime::from_hms(0, 0, 0); let query = select(sql::<Time>("CAST('00:00:00' AS TIME)")); assert_eq!(Ok(midnight), query.get_result::<NaiveTime>(&connection)); let noon = NaiveTime::from_hms(12, 0, 0); let query = select(sql::<Time>("CAST('12:00:00' AS TIME)")); assert_eq!(Ok(noon), query.get_result::<NaiveTime>(&connection)); let roughly_half_past_eleven = NaiveTime::from_hms(23, 37, 4); let query = select(sql::<Time>("CAST('23:37:04' AS TIME)")); assert_eq!( Ok(roughly_half_past_eleven), query.get_result::<NaiveTime>(&connection) ); } #[test] fn dates_encode_correctly() { let connection = connection(); let january_first_2000 = NaiveDate::from_ymd(2000, 1, 1); let query = select(sql::<Date>("CAST('2000-1-1' AS DATE)").eq(january_first_2000)); assert!(query.get_result::<bool>(&connection).unwrap()); let january_first_2018 = NaiveDate::from_ymd(2018, 1, 1); let query = select(sql::<Date>("CAST('2018-1-1' AS DATE)").eq(january_first_2018)); assert!(query.get_result::<bool>(&connection).unwrap()); } #[test] fn dates_decode_correctly() { let connection = connection(); let january_first_2000 = NaiveDate::from_ymd(2000, 1, 1); let query = select(sql::<Date>("CAST('2000-1-1' AS DATE)")); assert_eq!( Ok(january_first_2000), query.get_result::<NaiveDate>(&connection) ); let january_first_2018 = NaiveDate::from_ymd(2018, 1, 1); let query = select(sql::<Date>("CAST('2018-1-1' AS DATE)")); assert_eq!( Ok(january_first_2018), query.get_result::<NaiveDate>(&connection) ); connection .execute("SET sql_mode = (SELECT REPLACE(@@sql_mode, 'NO_ZERO_DATE,', ''))") .unwrap(); let query = select(sql::<Date>("CAST('0000-00-00' AS DATE)")); assert!(query.get_result::<NaiveDate>(&connection).is_err()); } }