core: cartridge: Try to detect and print the backup type

In preparation for backup impl


Former-commit-id: 75efbbaea82ba30899787b46b8eaca834622493c
This commit is contained in:
Michel Heily 2020-01-17 16:08:23 +02:00
parent ec0e796536
commit c20ac9cdf8
3 changed files with 32 additions and 10 deletions

View file

@ -29,6 +29,7 @@ bit-set = "0.5.1"
ringbuf = "0.2.1"
debug_stub_derive = "0.3.0"
bytesize = "1.0.0"
memmem = "0.1.1"
rustyline = {version = "5.0.0", optional = true}
nom = {version = "5.0.0", optional = true}

View file

@ -1,12 +1,11 @@
use std::ffi::OsStr;
use std::fs::File;
use std::io::prelude::*;
use std::path::Path;
use std::str::from_utf8;
use serde::{Deserialize, Serialize};
use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
use memmem::{Searcher, TwoWaySearcher};
use num::FromPrimitive;
use zip::ZipArchive;
use super::super::util::read_bin_file;
@ -71,6 +70,15 @@ impl CartridgeHeader {
}
}
#[derive(Debug, Primitive, Serialize, Deserialize, Clone)]
pub enum BackupType {
Eeprom = 0,
Sram = 1,
Flash = 2,
Flash512 = 3,
Flash1M = 4,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct Cartridge {
pub header: CartridgeHeader,
@ -109,16 +117,13 @@ fn load_rom(path: &Path) -> GBAResult<Vec<u8>> {
impl Cartridge {
pub fn from_path(rom_path: &Path) -> GBAResult<Cartridge> {
let rom_bin = load_rom(rom_path)?;
let size = rom_bin.len();
let header = CartridgeHeader::parse(&rom_bin);
Ok(Cartridge {
header: header,
bytes: rom_bin.into_boxed_slice(),
size: size,
})
Ok(Cartridge::from_bytes(&rom_bin))
}
pub fn from_bytes(bytes: &[u8]) -> Cartridge {
let backup = Cartridge::detect_backup_type(&bytes);
println!("Backup detected: {:?}", backup);
let size = bytes.len();
let header = CartridgeHeader::parse(&bytes);
@ -128,6 +133,20 @@ impl Cartridge {
size: size,
}
}
fn detect_backup_type(bin: &[u8]) -> Option<BackupType> {
const ID_STRINGS: &'static [&'static str] =
&["EEPROM_V", "SRAM_V", "FLASH_V", "FLASH512_V", "FLASH1M_V"];
for i in 0..5 {
let search = TwoWaySearcher::new(ID_STRINGS[i].as_bytes());
match search.search_in(bin) {
Some(_) => return Some(BackupType::from_u8(i as u8).unwrap()),
_ => {}
}
}
return None;
}
}
impl Bus for Cartridge {

View file

@ -34,6 +34,8 @@ extern crate colored; // not needed in Rust 2018
extern crate zip;
extern crate memmem;
#[macro_use]
pub mod util;
pub mod core;