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use byteorder::LittleEndian as LE;
use byteorder::{ReadBytesExt, WriteBytesExt};
use consts::{self, CapabilityFlags, ColumnType, StatusFlags};
use errors::*;
use regex::Regex;
use scramble::scramble;
use std::borrow::Cow;
use std::cmp;
use std::fmt;
use std::io::{self, Write};
use std::ops::Index;
use std::str;
use std::sync::Arc;
use value::{from_value, FromValue, Value};
use value::Value::*;
lazy_static! {
static ref VERSION_RE: Regex = {
Regex::new(r"^(\d{1,2})\.(\d{1,2})\.(\d{1,3})(.*)").unwrap()
};
}
pub fn lenenc_le(mut data: &[u8]) -> Option<(u64, u8)> {
let head_byte = match data.read_u8() {
Ok(x) => x,
_ => return None,
};
let length = match head_byte {
0xfc => 2,
0xfd => 3,
0xfe => 8,
x => return Some((x as u64, 1)),
};
data.read_uint::<LE>(length).ok().map(|x| (x, length as u8))
}
pub fn u32_le(data: &[u8]) -> Option<u32> {
if data.len() >= 4 {
Some(((data[3] as u32) << 24) + ((data[2] as u32) << 16) + ((data[1] as u32) << 8) +
data[0] as u32)
} else {
None
}
}
pub fn u24_le(data: &[u8]) -> Option<u32> {
if data.len() >= 3 {
Some(((data[2] as u32) << 16) + ((data[1] as u32) << 8) + data[0] as u32)
} else {
None
}
}
pub fn u16_le(data: &[u8]) -> Option<u16> {
if data.len() >= 2 {
Some(((data[1] as u16) << 8) + data[0] as u16)
} else {
None
}
}
pub fn write_lenenc_int<W>(writer: &mut W, x: u64) -> Result<()>
where W: Write,
{
if x < 251 {
writer.write_u8(x as u8)?;
} else if x < 65_536 {
writer.write_u8(0xFC)?;
writer.write_uint::<LE>(x, 2)?
} else if x < 16_777_216 {
writer.write_u8(0xFD)?;
writer.write_uint::<LE>(x, 3)?
} else {
writer.write_u8(0xFE)?;
writer.write_uint::<LE>(x, 8)?
}
Ok(())
}
pub fn write_lenenc_bytes<W>(writer: &mut W, bytes: &[u8]) -> Result<()>
where W: Write,
{
write_lenenc_int(writer, bytes.len() as u64)?;
writer.write_all(bytes)?;
Ok(())
}
pub fn read_lenenc_int<R>(reader: &mut R) -> Result<u64>
where R: io::Read,
{
let head_byte = reader.read_u8()?;
let length = match head_byte {
0xfc => 2,
0xfd => 3,
0xfe => 8,
x => return Ok(x as u64),
};
let out = reader.read_uint::<LE>(length)?;
Ok(out)
}
pub fn read_lenenc_bytes<R>(reader: &mut R) -> Result<Vec<u8>>
where R: io::Read,
{
let len = read_lenenc_int(reader)?;
let mut out = vec![0u8; len as usize];
reader.read_exact(&mut *out)?;
Ok(out)
}
pub fn read_bin_value<R>(reader: &mut R,
col_type: ColumnType,
unsigned: bool,
num_flag: bool)
-> Result<Value>
where R: io::Read,
{
match col_type {
ColumnType::MYSQL_TYPE_STRING |
ColumnType::MYSQL_TYPE_VAR_STRING |
ColumnType::MYSQL_TYPE_BLOB |
ColumnType::MYSQL_TYPE_TINY_BLOB |
ColumnType::MYSQL_TYPE_MEDIUM_BLOB |
ColumnType::MYSQL_TYPE_LONG_BLOB |
ColumnType::MYSQL_TYPE_SET |
ColumnType::MYSQL_TYPE_ENUM |
ColumnType::MYSQL_TYPE_DECIMAL |
ColumnType::MYSQL_TYPE_VARCHAR |
ColumnType::MYSQL_TYPE_BIT |
ColumnType::MYSQL_TYPE_NEWDECIMAL |
ColumnType::MYSQL_TYPE_GEOMETRY |
ColumnType::MYSQL_TYPE_JSON => {
if num_flag {
Ok(Int(reader.read_i64::<LE>()?))
} else {
Ok(Bytes(read_lenenc_bytes(reader)?))
}
},
ColumnType::MYSQL_TYPE_TINY => {
if unsigned {
Ok(Int(reader.read_u8()? as i64))
} else {
Ok(Int(reader.read_i8()? as i64))
}
},
ColumnType::MYSQL_TYPE_SHORT |
ColumnType::MYSQL_TYPE_YEAR => {
if unsigned {
Ok(Int(reader.read_u16::<LE>()? as i64))
} else {
Ok(Int(reader.read_i16::<LE>()? as i64))
}
},
ColumnType::MYSQL_TYPE_LONG |
ColumnType::MYSQL_TYPE_INT24 => {
if unsigned {
Ok(Int(reader.read_u32::<LE>()? as i64))
} else {
Ok(Int(reader.read_i32::<LE>()? as i64))
}
},
ColumnType::MYSQL_TYPE_LONGLONG => {
if unsigned {
Ok(UInt(reader.read_u64::<LE>()?))
} else {
Ok(Int(reader.read_i64::<LE>()?))
}
},
ColumnType::MYSQL_TYPE_FLOAT => Ok(Float(reader.read_f32::<LE>()? as f64)),
ColumnType::MYSQL_TYPE_DOUBLE => Ok(Float(reader.read_f64::<LE>()?)),
ColumnType::MYSQL_TYPE_TIMESTAMP |
ColumnType::MYSQL_TYPE_DATE |
ColumnType::MYSQL_TYPE_DATETIME => {
let len = reader.read_u8()?;
let mut year = 0u16;
let mut month = 0u8;
let mut day = 0u8;
let mut hour = 0u8;
let mut minute = 0u8;
let mut second = 0u8;
let mut micro_second = 0u32;
if len >= 4u8 {
year = reader.read_u16::<LE>()?;
month = reader.read_u8()?;
day = reader.read_u8()?;
}
if len >= 7u8 {
hour = reader.read_u8()?;
minute = reader.read_u8()?;
second = reader.read_u8()?;
}
if len == 11u8 {
micro_second = reader.read_u32::<LE>()?;
}
Ok(Date(year, month, day, hour, minute, second, micro_second))
},
ColumnType::MYSQL_TYPE_TIME => {
let len = reader.read_u8()?;
let mut is_negative = false;
let mut days = 0u32;
let mut hours = 0u8;
let mut minutes = 0u8;
let mut seconds = 0u8;
let mut micro_seconds = 0u32;
if len >= 8u8 {
is_negative = reader.read_u8()? == 1u8;
days = reader.read_u32::<LE>()?;
hours = reader.read_u8()?;
minutes = reader.read_u8()?;
seconds = reader.read_u8()?;
}
if len == 12u8 {
micro_seconds = reader.read_u32::<LE>()?;
}
Ok(Time(is_negative, days, hours, minutes, seconds, micro_seconds))
},
_ => Ok(NULL),
}
}
#[derive(Debug, Eq, PartialEq, Clone, Copy)]
pub enum PacketType {
Ok,
Eof,
Err,
}
#[derive(Debug)]
pub struct Packet {
payload: Vec<u8>,
}
impl Packet {
pub fn is(&self, type_: PacketType) -> bool {
match self.payload[0] {
0x00 if type_ == PacketType::Ok && self.payload.len() >= 7 => true,
0xfe if self.payload.len() <= 9 && type_ == PacketType::Eof => true,
0xff if type_ == PacketType::Err => true,
_ => false,
}
}
pub fn as_ref(&self) -> &[u8] {
&self.payload[..]
}
}
#[derive(Debug)]
pub enum ParseResult {
NeedHeader(NewPacket, usize),
Incomplete(NewPacket, usize),
Done(Packet, u8),
}
#[derive(Debug)]
pub struct NewPacket {
data: Vec<u8>,
length: usize,
header: Vec<u8>,
last_seq_id: u8,
}
impl NewPacket {
pub fn empty() -> NewPacket {
NewPacket {
data: Vec::new(),
length: 0,
header: Vec::with_capacity(4),
last_seq_id: 0,
}
}
pub fn push(&mut self, byte: u8) {
self.data.push(byte);
}
pub fn push_header(&mut self, byte: u8) {
assert!(self.header.len() < 4);
self.header.push(byte);
}
pub fn parse(mut self) -> ParseResult {
let last_packet_part = self.data.len() % consts::MAX_PAYLOAD_LEN;
if last_packet_part == 0 {
if self.header.len() != 4 {
let needed = 4 - self.header.len();
return ParseResult::NeedHeader(self, needed);
} else {
let length = u24_le(&*self.header).unwrap();
self.last_seq_id = self.header[3];
debug!("Last seq id {}", self.last_seq_id);
self.header.clear();
if length == 0 {
return ParseResult::Done(Packet { payload: self.data }, self.last_seq_id);
} else {
self.length = length as usize;
return ParseResult::Incomplete(self, length as usize);
}
}
} else {
if last_packet_part == self.length {
return ParseResult::Done(Packet { payload: self.data }, self.last_seq_id);
} else {
let length = self.length;
return ParseResult::Incomplete(self, length - last_packet_part);
}
}
}
}
#[derive(Debug)]
pub struct HandshakePacket {
packet: Packet,
srv_ver_len: usize,
more_data: bool,
}
impl HandshakePacket {
pub fn new(packet: Packet) -> HandshakePacket {
let (srv_ver_len, more_data) = {
let mut payload = &packet.payload[..];
let mut srv_ver_len = 0;
for (i, byte) in payload.iter().enumerate() {
if *byte == 0 {
srv_ver_len = i - 1;
break;
}
}
payload = &payload[(1 + srv_ver_len + 1 + 4 + 8 + 1)..];
let more_data = payload.len() > 0;
(srv_ver_len, more_data)
};
HandshakePacket {
packet: packet,
srv_ver_len: srv_ver_len,
more_data: more_data,
}
}
pub fn srv_ver_bytes(&self) -> &[u8] {
&self.packet.payload[1..(4 + 1 + self.srv_ver_len)]
}
pub fn srv_ver(&self) -> Cow<str> {
String::from_utf8_lossy(self.srv_ver_bytes())
}
pub fn srv_ver_parsed(&self) -> Result<(u16, u16, u16)> {
let ver_str = self.srv_ver().into_owned();
VERSION_RE.captures(&ver_str[..])
.and_then(|capts| {
Some((*&capts[1].parse::<u16>().unwrap_or(0),
*&capts[2].parse::<u16>().unwrap_or(0),
*&capts[3].parse::<u16>().unwrap_or(0)))
})
.and_then(|version| {
if version == (0, 0, 0) {
None
} else {
Some(version)
}
})
.ok_or(ErrorKind::CantParseVersion(ver_str).into())
}
pub fn conn_id(&self) -> u32 {
u32_le(&self.packet.payload[(1 + self.srv_ver_len + 1)..]).expect("should be here")
}
pub fn auth_plug_data_len(&self) -> Option<u8> {
let offset = 1 + self.srv_ver_len + 1 + 4 + 8 + 1 + 2 + 1 + 2 + 2;
if self.more_data && self.capabilities().contains(consts::CLIENT_PLUGIN_AUTH) {
Some(cmp::max(13, self.packet.payload[offset] - 8))
} else {
None
}
}
pub fn auth_plug_data_1(&self) -> &[u8] {
let offset = 1 + self.srv_ver_len + 1 + 4;
&self.packet.payload[offset..(offset + 8)]
}
pub fn auth_plug_data_2(&self) -> Option<&[u8]> {
let offset = 1 + self.srv_ver_len + 1 + 4 + 8 + 1 + 2 + 1 + 2 + 2 + 1 + 10;
match self.auth_plug_data_len() {
Some(length) => {
let length = length as usize;
let mut auth_plug_data_2 = &self.packet.payload[offset..offset + length];
if auth_plug_data_2[auth_plug_data_2.len() - 1] == 0 {
auth_plug_data_2 = &auth_plug_data_2[..auth_plug_data_2.len() - 1];
}
Some(auth_plug_data_2)
},
None => None,
}
}
pub fn capabilities(&self) -> CapabilityFlags {
let offset1 = 1 + self.srv_ver_len + 1 + 4 + 8 + 1;
let offset2 = offset1 + 2 + 1 + 2;
let lower = u16_le(&self.packet.payload[offset1..]).expect("should be here");
let mut capabilityes = CapabilityFlags::from_bits_truncate(lower as u32);
if self.more_data {
let upper = u16_le(&self.packet.payload[offset2..]).expect("should be here");
capabilityes.insert(CapabilityFlags::from_bits_truncate((upper as u32) << 16));
}
capabilityes
}
pub fn status_flags(&self) -> Option<StatusFlags> {
let offset = 1 + self.srv_ver_len + 1 + 4 + 8 + 1 + 2 + 1;
if self.more_data {
let value = u16_le(&self.packet.payload[offset..]).expect("should be here");
Some(StatusFlags::from_bits_truncate(value))
} else {
None
}
}
pub fn charset(&self) -> Option<u8> {
let offset = 1 + self.srv_ver_len + 1 + 4 + 8 + 1 + 2;
if self.more_data {
Some(self.packet.payload[offset])
} else {
None
}
}
pub fn auth_plugin_name_bytes(&self) -> Option<&[u8]> {
self.auth_plug_data_len().map(|length| {
let length = length as usize;
let offset = 1 + self.srv_ver_len + 1 + 4 + 8 + 1 + 2 + 1 + 2 + 2 + 1 + 10 + length;
let mut auth_plugin_name = &self.packet.payload[offset..];
if auth_plugin_name[auth_plugin_name.len() - 1] == 0 {
auth_plugin_name = &auth_plugin_name[..auth_plugin_name.len() - 1];
}
auth_plugin_name
})
}
pub fn auth_plugin_name(&self) -> Option<Cow<str>> {
self.auth_plugin_name_bytes().map(|bytes| String::from_utf8_lossy(bytes))
}
}
#[derive(Debug)]
pub struct HandshakeResponse {
data: Vec<u8>,
}
impl HandshakeResponse {
pub fn new<U, P, D>(handshake: &HandshakePacket,
user: Option<U>,
passwd: Option<P>,
database: Option<D>)
-> HandshakeResponse
where U: AsRef<[u8]> + Clone,
P: AsRef<[u8]>,
D: AsRef<[u8]> + Clone,
{
let mut client_flags =
consts::CLIENT_PROTOCOL_41 | consts::CLIENT_SECURE_CONNECTION |
consts::CLIENT_LONG_PASSWORD | consts::CLIENT_TRANSACTIONS |
consts::CLIENT_LOCAL_FILES | consts::CLIENT_MULTI_STATEMENTS |
consts::CLIENT_MULTI_RESULTS | consts::CLIENT_PS_MULTI_RESULTS;
if let Some(ref database) = database {
if database.as_ref().len() > 0 {
client_flags.insert(consts::CLIENT_CONNECT_WITH_DB);
}
}
let scramble_buf = passwd.and_then(|passwd| {
scramble(handshake.auth_plug_data_1(),
handshake.auth_plug_data_2(),
passwd.as_ref())
});
let user_len = user.clone().map(|user| user.as_ref().len()).unwrap_or(0);
let database_len = database.clone().map(|database| database.as_ref().len()).unwrap_or(0);
let scramble_len = scramble_buf.map(|scramble_buf| scramble_buf.len()).unwrap_or(0);
let mut payload_len = 4 + 4 + 1 + 23 + user_len + 1 + 1 + scramble_len;
if database_len > 0 {
payload_len += database_len + 1;
}
let mut data = vec![0u8; payload_len];
{
let mut writer = &mut *data;
writer.write_u32::<LE>(client_flags.bits()).unwrap();
writer.write_all(&[0u8; 4]).unwrap();
let mut collation = consts::UTF8_GENERAL_CI;
if let Ok(version) = handshake.srv_ver_parsed() {
if version >= (5, 5, 3) {
collation = consts::UTF8MB4_GENERAL_CI;
}
}
writer.write_u8(collation).unwrap();
writer.write_all(&[0u8; 23]).unwrap();
if let Some(user) = user {
writer.write_all(user.as_ref()).unwrap();
}
writer.write_u8(0).unwrap();
writer.write_u8(scramble_len as u8).unwrap();
if let Some(scramble_buf) = scramble_buf {
writer.write_all(&scramble_buf[..]).unwrap();
}
if let Some(database) = database {
if database_len > 0 {
writer.write_all(database.as_ref()).unwrap();
writer.write_u8(0).unwrap();
}
}
}
HandshakeResponse { data: data }
}
pub fn as_ref(&self) -> &[u8] {
&self.data[..]
}
}
#[derive(Debug, Clone)]
pub struct OkPacket {
data: Vec<u8>,
affected_rows: u64,
last_insert_id: u64,
status_flags: StatusFlags,
warnings: u16,
info: (usize, usize),
session_state_changes: Option<(usize, usize)>,
}
impl OkPacket {
pub fn new(packet: Packet, capabilities: CapabilityFlags) -> Option<OkPacket> {
if packet.is(PacketType::Ok) {
let mut offset = 1;
let (affected_rows, affected_rows_len) = lenenc_le(&packet.payload[offset..])
.expect("should be here 5");
offset += affected_rows_len as usize;
let (last_insert_id, last_insert_id_len) = lenenc_le(&packet.payload[offset..])
.expect("should be here 6");
offset += last_insert_id_len as usize;
let status_flags = u16_le(&packet.payload[offset..]).expect("should be here 7");
let status_flags = StatusFlags::from_bits_truncate(status_flags);
offset += 2;
let warnings = u16_le(&packet.payload[offset..]).expect("should be here 8");
offset += 2;
let info;
let mut session_state_changes = None;
if capabilities.contains(consts::CLIENT_SESSION_TRACK) {
let (info_len, info_len_len) = lenenc_le(&packet.payload[offset..])
.expect("should be here 9");
offset += info_len_len as usize;
info = (offset, offset + info_len as usize);
if status_flags.contains(consts::SERVER_SESSION_STATE_CHANGED) {
let (sess_state_changes_len, sess_state_changes_len_len) =
lenenc_le(&packet.payload[offset..]).expect("should be here 10");
offset += sess_state_changes_len_len as usize;
session_state_changes = Some((offset,
offset + sess_state_changes_len as usize));
}
} else {
info = (offset, packet.payload.len());
}
Some(OkPacket {
data: packet.payload,
affected_rows: affected_rows,
last_insert_id: last_insert_id,
status_flags: status_flags,
warnings: warnings,
info: info,
session_state_changes: session_state_changes,
})
} else {
None
}
}
pub fn affected_rows(&self) -> u64 {
self.affected_rows
}
pub fn last_insert_id(&self) -> u64 {
self.last_insert_id
}
pub fn status_flags(&self) -> StatusFlags {
self.status_flags
}
pub fn warnings(&self) -> u16 {
self.warnings
}
pub fn info_bytes(&self) -> &[u8] {
&self.data[self.info.0..self.info.1]
}
pub fn info(&self) -> Cow<str> {
String::from_utf8_lossy(self.info_bytes())
}
pub fn session_state_changes_bytes(&self) -> Option<&[u8]> {
if let Some((start, end)) = self.session_state_changes {
Some(&self.data[start..end])
} else {
None
}
}
pub fn session_state_changes(&self) -> Option<Cow<str>> {
self.session_state_changes_bytes().map(String::from_utf8_lossy)
}
pub fn unwrap(self) -> Packet {
Packet { payload: self.data }
}
}
pub struct ErrPacket {
data: Vec<u8>,
}
impl ErrPacket {
#[doc(hidden)]
pub fn new(packet: Packet) -> Option<ErrPacket> {
if packet.is(PacketType::Err) {
Some(ErrPacket { data: packet.payload })
} else {
None
}
}
pub fn error_code(&self) -> u16 {
let offset = 1;
u16_le(&self.data[offset..]).expect("should be here")
}
pub fn state_bytes(&self) -> &[u8] {
let offset = 1 + 2 + 1;
if self.data[3] == b'#' {
&self.data[offset..offset + 5]
} else {
&b""[..]
}
}
pub fn state(&self) -> Cow<str> {
String::from_utf8_lossy(self.state_bytes())
}
pub fn message_bytes(&self) -> &[u8] {
let offset = if self.data[3] == b'#' {
1 + 2 + 1 + 5
} else {
1 + 2
};
&self.data[offset..]
}
pub fn message(&self) -> Cow<str> {
String::from_utf8_lossy(self.message_bytes())
}
}
impl fmt::Debug for ErrPacket {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f,
"ERROR {} ({}): {}",
self.error_code(),
self.state(),
self.message())
}
}
pub struct EofPacket {
data: Vec<u8>,
}
impl EofPacket {
pub fn new(packet: Packet) -> Option<EofPacket> {
if packet.is(PacketType::Eof) {
Some(EofPacket { data: packet.payload })
} else {
None
}
}
pub fn warnings(&self) -> u16 {
let offset = 1;
u16_le(&self.data[offset..]).expect("should be here")
}
pub fn status_flags(&self) -> StatusFlags {
let offset = 1 + 2;
let status_flags_bytes = u16_le(&self.data[offset..]).expect("should be here");
StatusFlags::from_bits_truncate(status_flags_bytes)
}
pub fn unwrap(self) -> Packet {
Packet { payload: self.data }
}
}
#[derive(Clone, PartialEq, Debug)]
pub struct Row {
values: Vec<Option<Value>>,
columns: Arc<Vec<Column>>,
}
impl Row {
#[doc(hidden)]
pub fn new(raw_row: Vec<Value>, columns: Arc<Vec<Column>>) -> Row {
Row {
values: raw_row.into_iter().map(|value| Some(value)).collect(),
columns: columns,
}
}
pub fn len(&self) -> usize {
self.values.len()
}
pub fn as_ref(&self, index: usize) -> Option<&Value> {
self.values.get(index).and_then(|x| x.as_ref())
}
pub fn get<T, I>(&mut self, index: I) -> Option<T>
where T: FromValue,
I: ColumnIndex,
{
index.idx(&*self.columns).and_then(|idx| {
self.values.get(idx).and_then(|x| x.as_ref()).map(|x| from_value::<T>(x.clone()))
})
}
pub fn take<T, I>(&mut self, index: I) -> Option<T>
where T: FromValue,
I: ColumnIndex,
{
index.idx(&*self.columns)
.and_then(|idx| self.values.get_mut(idx).and_then(|x| x.take()).map(from_value::<T>))
}
pub fn unwrap(self) -> Vec<Value> {
self.values
.into_iter()
.map(|x| x.expect("Can't unwrap row if some of columns was taken"))
.collect()
}
#[doc(hidden)]
pub fn place(&mut self, index: usize, value: Value) {
self.values[index] = Some(value);
}
}
impl Index<usize> for Row {
type Output = Value;
fn index<'a>(&'a self, index: usize) -> &'a Value {
self.values[index].as_ref().unwrap()
}
}
impl<'a> Index<&'a str> for Row {
type Output = Value;
fn index<'r>(&'r self, index: &'a str) -> &'r Value {
for (i, column) in self.columns.iter().enumerate() {
if column.name() == index.as_bytes() {
return self.values[i].as_ref().unwrap();
}
}
panic!("No such column: `{}`", index);
}
}
pub trait ColumnIndex {
fn idx(&self, columns: &Vec<Column>) -> Option<usize>;
}
impl ColumnIndex for usize {
fn idx(&self, columns: &Vec<Column>) -> Option<usize> {
if *self >= columns.len() {
None
} else {
Some(*self)
}
}
}
impl<'a> ColumnIndex for &'a str {
fn idx(&self, columns: &Vec<Column>) -> Option<usize> {
for (i, c) in columns.iter().enumerate() {
if c.name() == self.as_bytes() {
return Some(i);
}
}
None
}
}
#[derive(Clone, Eq, PartialEq, Debug)]
pub struct Column {
payload: Vec<u8>,
schema: (usize, usize),
table: (usize, usize),
org_table: (usize, usize),
name: (usize, usize),
org_name: (usize, usize),
default_values: Option<(usize, usize)>,
pub column_length: u32,
pub character_set: u16,
pub flags: consts::ColumnFlags,
pub column_type: consts::ColumnType,
pub decimals: u8,
}
impl Column {
#[doc(hidden)]
pub fn new(packet: Packet, last_command: consts::Command) -> Column {
let (schema,
table,
org_table,
name,
org_name,
defaults,
column_len,
charset,
type_,
flags,
decimals) = {
let mut reader = packet.as_ref();
let mut offset = 0;
let (len, size) =
lenenc_le(&mut reader).map(|(a, b)| (a as usize, b as usize)).expect("1");
offset += size + len;
reader = &reader[size + len..];
let (len, size) =
lenenc_le(&mut reader).map(|(a, b)| (a as usize, b as usize)).expect("2");
let schema = (offset + size, len);
offset += size + len;
reader = &reader[size + len..];
let (len, size) =
lenenc_le(&mut reader).map(|(a, b)| (a as usize, b as usize)).expect("3");
let table = (offset + size, len);
offset += size + len;
reader = &reader[size + len..];
let (len, size) =
lenenc_le(&mut reader).map(|(a, b)| (a as usize, b as usize)).expect("4");
let org_table = (offset + size, len);
offset += size + len;
reader = &reader[size + len..];
let (len, size) =
lenenc_le(&mut reader).map(|(a, b)| (a as usize, b as usize)).expect("5");
let name = (offset + size, len);
offset += size + len;
reader = &reader[size + len..];
let (len, size) =
lenenc_le(&mut reader).map(|(a, b)| (a as usize, b as usize)).expect("6");
let org_name = (offset + size, len);
offset += size + len;
reader = &reader[size + len..];
offset += 1;
reader = &reader[1..];
let charset = u16_le(reader).expect("7");
offset += 2;
reader = &reader[2..];
let column_len = u32_le(reader).expect("8");
offset += 4;
reader = &reader[4..];
let type_: consts::ColumnType = reader[0].into();
offset += 1;
reader = &reader[1..];
let flags = u16_le(reader).expect("9");
offset += 2;
reader = &reader[2..];
let decimals = reader[0];
offset += 1;
reader = &reader[1..];
offset += 2;
let defaults = if last_command == consts::Command::COM_FIELD_LIST {
let (len, size) =
lenenc_le(&mut reader).map(|(a, b)| (a as usize, b as usize)).expect("10");
Some((offset + size, len))
} else {
None
};
(schema,
table,
org_table,
name,
org_name,
defaults,
column_len,
charset,
type_,
flags,
decimals)
};
Column {
payload: packet.payload,
schema: schema,
table: table,
org_table: org_table,
name: name,
org_name: org_name,
default_values: defaults,
column_length: column_len,
character_set: charset,
flags: consts::ColumnFlags::from_bits_truncate(flags),
column_type: type_,
decimals: decimals,
}
}
pub fn schema<'a>(&'a self) -> &'a [u8] {
&self.payload[self.schema.0..self.schema.0 + self.schema.1]
}
pub fn table<'a>(&'a self) -> &'a [u8] {
&self.payload[self.table.0..self.table.0 + self.table.1]
}
pub fn org_table<'a>(&'a self) -> &'a [u8] {
&self.payload[self.org_table.0..self.org_table.0 + self.org_table.1]
}
pub fn name<'a>(&'a self) -> &'a [u8] {
&self.payload[self.name.0..self.name.0 + self.name.1]
}
pub fn org_name<'a>(&'a self) -> &'a [u8] {
&self.payload[self.org_name.0..self.org_name.0 + self.org_name.1]
}
pub fn default_values<'a>(&'a self) -> Option<&'a [u8]> {
self.default_values.map(|(offset, len)| &self.payload[offset..offset + len])
}
}