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-rw-r--r--libnres/src/reader.rs227
1 files changed, 0 insertions, 227 deletions
diff --git a/libnres/src/reader.rs b/libnres/src/reader.rs
deleted file mode 100644
index 2a450ee..0000000
--- a/libnres/src/reader.rs
+++ /dev/null
@@ -1,227 +0,0 @@
-use std::io::{Read, Seek};
-
-use byteorder::ByteOrder;
-
-use crate::error::ReaderError;
-use crate::{converter, FILE_TYPE_1, FILE_TYPE_2, LIST_ELEMENT_SIZE, MINIMUM_FILE_SIZE};
-
-#[derive(Debug)]
-pub struct ListElement {
- /// Unknown parameter
- _unknown0: i32,
- /// Unknown parameter
- _unknown1: i32,
- /// Unknown parameter
- _unknown2: i32,
- /// File extension
- pub extension: String,
- /// Identifier or sequence number
- pub index: u32,
- /// File name
- pub name: String,
- /// Position in the file
- pub position: u32,
- /// File size (in bytes)
- pub size: u32,
-}
-
-impl ListElement {
- /// Get full name of the file
- pub fn get_filename(&self) -> String {
- format!("{}.{}", self.name, self.extension)
- }
-}
-
-#[derive(Debug)]
-pub struct FileHeader {
- /// File size
- size: u32,
- /// Number of files
- total: u32,
- /// First constant value
- type1: u32,
- /// Second constant value
- type2: u32,
-}
-
-/// Get a packed file data
-pub fn get_file(file: &std::fs::File, element: &ListElement) -> Result<Vec<u8>, ReaderError> {
- let size = get_file_size(file)?;
- check_file_size(size)?;
-
- let header = get_file_header(file)?;
- check_file_header(&header, size)?;
-
- let data = get_element_data(file, element)?;
- Ok(data)
-}
-
-/// Get a list of packed files
-pub fn get_list(file: &std::fs::File) -> Result<Vec<ListElement>, ReaderError> {
- let mut list: Vec<ListElement> = Vec::new();
-
- let size = get_file_size(file)?;
- check_file_size(size)?;
-
- let header = get_file_header(file)?;
- check_file_header(&header, size)?;
-
- get_file_list(file, &header, &mut list)?;
-
- Ok(list)
-}
-
-fn check_file_header(header: &FileHeader, size: u32) -> Result<(), ReaderError> {
- if header.type1 != FILE_TYPE_1 || header.type2 != FILE_TYPE_2 {
- return Err(ReaderError::IncorrectHeader);
- }
-
- if header.size != size {
- return Err(ReaderError::IncorrectSizeFile {
- expected: size,
- received: header.size,
- });
- }
-
- Ok(())
-}
-
-fn check_file_size(size: u32) -> Result<(), ReaderError> {
- if size < MINIMUM_FILE_SIZE {
- return Err(ReaderError::SmallFile {
- expected: MINIMUM_FILE_SIZE,
- received: size,
- });
- }
-
- Ok(())
-}
-
-fn get_element_data(file: &std::fs::File, element: &ListElement) -> Result<Vec<u8>, ReaderError> {
- let position = converter::u32_to_u64(element.position)?;
- let size = converter::u32_to_usize(element.size)?;
-
- let mut reader = std::io::BufReader::new(file);
- let mut buffer = vec![0u8; size];
-
- if let Err(error) = reader.seek(std::io::SeekFrom::Start(position)) {
- return Err(ReaderError::ReadFile(error));
- };
-
- if let Err(error) = reader.read_exact(&mut buffer) {
- return Err(ReaderError::ReadFile(error));
- };
-
- Ok(buffer)
-}
-
-fn get_element_position(index: u32) -> Result<(usize, usize), ReaderError> {
- let from = converter::u32_to_usize(index * LIST_ELEMENT_SIZE)?;
- let to = converter::u32_to_usize((index * LIST_ELEMENT_SIZE) + LIST_ELEMENT_SIZE)?;
- Ok((from, to))
-}
-
-fn get_file_header(file: &std::fs::File) -> Result<FileHeader, ReaderError> {
- let mut reader = std::io::BufReader::new(file);
- let mut buffer = vec![0u8; MINIMUM_FILE_SIZE as usize];
-
- if let Err(error) = reader.seek(std::io::SeekFrom::Start(0)) {
- return Err(ReaderError::ReadFile(error));
- };
-
- if let Err(error) = reader.read_exact(&mut buffer) {
- return Err(ReaderError::ReadFile(error));
- };
-
- let header = FileHeader {
- size: byteorder::LittleEndian::read_u32(&buffer[12..16]),
- total: byteorder::LittleEndian::read_u32(&buffer[8..12]),
- type1: byteorder::LittleEndian::read_u32(&buffer[0..4]),
- type2: byteorder::LittleEndian::read_u32(&buffer[4..8]),
- };
-
- buffer.clear();
- Ok(header)
-}
-
-fn get_file_list(
- file: &std::fs::File,
- header: &FileHeader,
- list: &mut Vec<ListElement>,
-) -> Result<(), ReaderError> {
- let (start_position, list_size) = get_list_position(header)?;
- let mut reader = std::io::BufReader::new(file);
- let mut buffer = vec![0u8; list_size];
-
- if let Err(error) = reader.seek(std::io::SeekFrom::Start(start_position)) {
- return Err(ReaderError::ReadFile(error));
- };
-
- if let Err(error) = reader.read_exact(&mut buffer) {
- return Err(ReaderError::ReadFile(error));
- }
-
- let buffer_size = converter::usize_to_u32(buffer.len())?;
-
- if buffer_size % LIST_ELEMENT_SIZE != 0 {
- return Err(ReaderError::IncorrectSizeList {
- expected: LIST_ELEMENT_SIZE,
- received: buffer_size,
- });
- }
-
- for i in 0..(buffer_size / LIST_ELEMENT_SIZE) {
- let (from, to) = get_element_position(i)?;
- let chunk: &[u8] = &buffer[from..to];
-
- let element = get_list_element(chunk)?;
- list.push(element);
- }
-
- buffer.clear();
- Ok(())
-}
-
-fn get_file_size(file: &std::fs::File) -> Result<u32, ReaderError> {
- let metadata = match file.metadata() {
- Err(error) => return Err(ReaderError::ReadFile(error)),
- Ok(value) => value,
- };
-
- let result = converter::u64_to_u32(metadata.len())?;
- Ok(result)
-}
-
-fn get_list_element(buffer: &[u8]) -> Result<ListElement, ReaderError> {
- let index = byteorder::LittleEndian::read_u32(&buffer[60..64]);
- let position = byteorder::LittleEndian::read_u32(&buffer[56..60]);
- let size = byteorder::LittleEndian::read_u32(&buffer[12..16]);
- let unknown0 = byteorder::LittleEndian::read_i32(&buffer[4..8]);
- let unknown1 = byteorder::LittleEndian::read_i32(&buffer[8..12]);
- let unknown2 = byteorder::LittleEndian::read_i32(&buffer[16..20]);
-
- let extension = String::from_utf8_lossy(&buffer[0..4])
- .trim_matches(char::from(0))
- .to_string();
-
- let name = String::from_utf8_lossy(&buffer[20..56])
- .trim_matches(char::from(0))
- .to_string();
-
- Ok(ListElement {
- _unknown0: unknown0,
- _unknown1: unknown1,
- _unknown2: unknown2,
- extension,
- index,
- name,
- position,
- size,
- })
-}
-
-fn get_list_position(header: &FileHeader) -> Result<(u64, usize), ReaderError> {
- let position = converter::u32_to_u64(header.size - (header.total * LIST_ELEMENT_SIZE))?;
- let size = converter::u32_to_usize(header.total * LIST_ELEMENT_SIZE)?;
- Ok((position, size))
-}
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