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use crate::decode::Decode;
use crate::encode::{Encode, IsNull};
use crate::error::BoxDynError;
use crate::mssql::io::MssqlBufMutExt;
use crate::mssql::protocol::type_info::{Collation, CollationFlags, DataType, TypeInfo};
use crate::mssql::{Mssql, MssqlTypeInfo, MssqlValueRef};
use crate::types::Type;
impl Type<Mssql> for str {
fn type_info() -> MssqlTypeInfo {
MssqlTypeInfo(TypeInfo::new(DataType::NVarChar, 0))
}
fn compatible(ty: &MssqlTypeInfo) -> bool {
matches!(
ty.0.ty,
DataType::NVarChar
| DataType::NChar
| DataType::BigVarChar
| DataType::VarChar
| DataType::BigChar
| DataType::Char
)
}
}
impl Type<Mssql> for String {
fn type_info() -> MssqlTypeInfo {
<str as Type<Mssql>>::type_info()
}
fn compatible(ty: &MssqlTypeInfo) -> bool {
<str as Type<Mssql>>::compatible(ty)
}
}
impl Encode<'_, Mssql> for &'_ str {
fn produces(&self) -> Option<MssqlTypeInfo> {
Some(MssqlTypeInfo(TypeInfo {
ty: DataType::NVarChar,
size: ((self.len() * 2) as u32).max(2),
scale: 0,
precision: 0,
collation: Some(Collation {
locale: 1033,
flags: CollationFlags::IGNORE_CASE
| CollationFlags::IGNORE_WIDTH
| CollationFlags::IGNORE_KANA,
sort: 52,
version: 0,
}),
}))
}
fn encode_by_ref(&self, buf: &mut Vec<u8>) -> IsNull {
buf.put_utf16_str(self);
IsNull::No
}
}
impl Encode<'_, Mssql> for String {
fn produces(&self) -> Option<MssqlTypeInfo> {
<&str as Encode<Mssql>>::produces(&self.as_str())
}
fn encode_by_ref(&self, buf: &mut Vec<u8>) -> IsNull {
<&str as Encode<Mssql>>::encode_by_ref(&self.as_str(), buf)
}
}
impl Decode<'_, Mssql> for String {
fn decode(value: MssqlValueRef<'_>) -> Result<Self, BoxDynError> {
Ok(value
.type_info
.0
.encoding()?
.decode_without_bom_handling(value.as_bytes()?)
.0
.into_owned())
}
}