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|
use crate::file::{ArchiveFile, ArchiveFileRead, ArchiveFileWrite};
use crate::result::{ArchiveError, ArchiveResult};
use chrono::NaiveDateTime;
use std::io::{Read, Write};
pub struct GeneralPurposeBitFlag {}
pub enum CompressionMethod {
Store,
Deflate,
Bzip2,
LZMA,
Zstandard,
}
impl TryFrom<u16> for CompressionMethod {
type Error = ArchiveError;
fn try_from(value: u16) -> ArchiveResult<Self> {
Ok(match value {
0 => Self::Store,
8 => Self::Deflate,
12 => Self::Bzip2,
14 => Self::LZMA,
93 | 20 => Self::Zstandard,
_ => return Err(ArchiveError::UnsupportedCompressionMethod { method: value }),
})
}
}
pub struct FileInfo {
number: u64,
version_made_by: u16,
version_needed: u16,
general_purpose_bit_flag: GeneralPurposeBitFlag,
compression_method: CompressionMethod,
file_modified_at: NaiveDateTime,
crc32: u32,
compressed_size: u64,
uncompressed_size: u64,
name: String,
comment: String,
header_offset: u64,
}
impl FileInfo {
pub fn new(
number: u64,
version_made_by: u16,
version_needed: u16,
general_purpose_bit_flag: GeneralPurposeBitFlag,
compression_method: CompressionMethod,
file_modified_at: NaiveDateTime,
crc32: u32,
compressed_size: u64,
uncompressed_size: u64,
name: String,
comment: String,
header_offset: u64,
) -> Self {
Self {
number,
version_made_by,
version_needed,
general_purpose_bit_flag,
compression_method,
file_modified_at,
crc32,
compressed_size,
uncompressed_size,
name,
comment,
header_offset,
}
}
}
pub struct FileReader {
info: FileInfo,
}
impl ArchiveFile for FileReader {
type Info = FileInfo;
fn new(info: Self::Info) -> Self {
Self { info }
}
}
impl Read for FileReader {
fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
todo!()
}
}
impl ArchiveFileRead for FileReader {}
impl FileReader {}
pub struct FileWriter {
info: FileInfo,
}
impl ArchiveFile for FileWriter {
type Info = FileInfo;
fn new(info: Self::Info) -> Self {
Self { info }
}
}
impl Write for FileWriter {
fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
todo!()
}
fn flush(&mut self) -> std::io::Result<()> {
todo!()
}
}
impl ArchiveFileWrite for FileWriter {}
impl FileWriter {}
|
