use crate::{
DbcTable, Indexable,
};
use crate::header::{
DbcHeader, HEADER_SIZE, parse_header,
};
use crate::vanilla_tables::languages::LanguagesKey;
use std::io::Write;
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct LanguageWords {
pub rows: Vec<LanguageWordsRow>,
}
impl DbcTable for LanguageWords {
type Row = LanguageWordsRow;
const FILENAME: &'static str = "LanguageWords.dbc";
fn rows(&self) -> &[Self::Row] { &self.rows }
fn rows_mut(&mut self) -> &mut [Self::Row] { &mut self.rows }
fn read(b: &mut impl std::io::Read) -> Result<Self, crate::DbcError> {
let mut header = [0_u8; HEADER_SIZE];
b.read_exact(&mut header)?;
let header = parse_header(&header)?;
if header.record_size != 12 {
return Err(crate::DbcError::InvalidHeader(
crate::InvalidHeaderError::RecordSize {
expected: 12,
actual: header.record_size,
},
));
}
if header.field_count != 3 {
return Err(crate::DbcError::InvalidHeader(
crate::InvalidHeaderError::FieldCount {
expected: 3,
actual: header.field_count,
},
));
}
let mut r = vec![0_u8; (header.record_count * header.record_size) as usize];
b.read_exact(&mut r)?;
let mut string_block = vec![0_u8; header.string_block_size as usize];
b.read_exact(&mut string_block)?;
let mut rows = Vec::with_capacity(header.record_count as usize);
for mut chunk in r.chunks(header.record_size as usize) {
let chunk = &mut chunk;
let id = LanguageWordsKey::new(crate::util::read_u32_le(chunk)?);
let language = LanguagesKey::new(crate::util::read_u32_le(chunk)?.into());
let word = {
let s = crate::util::get_string_as_vec(chunk, &string_block)?;
String::from_utf8(s)?
};
rows.push(LanguageWordsRow {
id,
language,
word,
});
}
Ok(LanguageWords { rows, })
}
fn write(&self, b: &mut impl Write) -> Result<(), std::io::Error> {
let header = DbcHeader {
record_count: self.rows.len() as u32,
field_count: 3,
record_size: 12,
string_block_size: self.string_block_size(),
};
b.write_all(&header.write_header())?;
let mut string_index = 1;
for row in &self.rows {
b.write_all(&row.id.id.to_le_bytes())?;
b.write_all(&(row.language.id as u32).to_le_bytes())?;
if !row.word.is_empty() {
b.write_all(&(string_index as u32).to_le_bytes())?;
string_index += row.word.len() + 1;
}
else {
b.write_all(&(0_u32).to_le_bytes())?;
}
}
self.write_string_block(b)?;
Ok(())
}
}
impl Indexable for LanguageWords {
type PrimaryKey = LanguageWordsKey;
fn get(&self, key: impl TryInto<Self::PrimaryKey>) -> Option<&Self::Row> {
let key = key.try_into().ok()?;
self.rows.iter().find(|a| a.id.id == key.id)
}
fn get_mut(&mut self, key: impl TryInto<Self::PrimaryKey>) -> Option<&mut Self::Row> {
let key = key.try_into().ok()?;
self.rows.iter_mut().find(|a| a.id.id == key.id)
}
}
impl LanguageWords {
fn write_string_block(&self, b: &mut impl Write) -> Result<(), std::io::Error> {
b.write_all(&[0])?;
for row in &self.rows {
if !row.word.is_empty() { b.write_all(row.word.as_bytes())?; b.write_all(&[0])?; };
}
Ok(())
}
fn string_block_size(&self) -> u32 {
let mut sum = 1;
for row in &self.rows {
if !row.word.is_empty() { sum += row.word.len() + 1; };
}
sum as u32
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Ord, PartialOrd, Hash, Default)]
pub struct LanguageWordsKey {
pub id: u32
}
impl LanguageWordsKey {
pub const fn new(id: u32) -> Self {
Self { id }
}
}
impl From<u8> for LanguageWordsKey {
fn from(v: u8) -> Self {
Self::new(v.into())
}
}
impl From<u16> for LanguageWordsKey {
fn from(v: u16) -> Self {
Self::new(v.into())
}
}
impl From<u32> for LanguageWordsKey {
fn from(v: u32) -> Self {
Self::new(v)
}
}
impl TryFrom<u64> for LanguageWordsKey {
type Error = u64;
fn try_from(v: u64) -> Result<Self, Self::Error> {
Ok(TryInto::<u32>::try_into(v).ok().ok_or(v)?.into())
}
}
impl TryFrom<usize> for LanguageWordsKey {
type Error = usize;
fn try_from(v: usize) -> Result<Self, Self::Error> {
Ok(TryInto::<u32>::try_into(v).ok().ok_or(v)?.into())
}
}
impl TryFrom<i8> for LanguageWordsKey {
type Error = i8;
fn try_from(v: i8) -> Result<Self, Self::Error> {
Ok(TryInto::<u32>::try_into(v).ok().ok_or(v)?.into())
}
}
impl TryFrom<i16> for LanguageWordsKey {
type Error = i16;
fn try_from(v: i16) -> Result<Self, Self::Error> {
Ok(TryInto::<u32>::try_into(v).ok().ok_or(v)?.into())
}
}
impl TryFrom<i32> for LanguageWordsKey {
type Error = i32;
fn try_from(v: i32) -> Result<Self, Self::Error> {
Ok(TryInto::<u32>::try_into(v).ok().ok_or(v)?.into())
}
}
impl TryFrom<i64> for LanguageWordsKey {
type Error = i64;
fn try_from(v: i64) -> Result<Self, Self::Error> {
Ok(TryInto::<u32>::try_into(v).ok().ok_or(v)?.into())
}
}
impl TryFrom<isize> for LanguageWordsKey {
type Error = isize;
fn try_from(v: isize) -> Result<Self, Self::Error> {
Ok(TryInto::<u32>::try_into(v).ok().ok_or(v)?.into())
}
}
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct LanguageWordsRow {
pub id: LanguageWordsKey,
pub language: LanguagesKey,
pub word: String,
}