Support zip files and add --no-framerate-limit

Former-commit-id: 62a7122fb0b3e832eeb3cbf347a0966e4cd32d50

Cargo.toml

@@ -21,6 +21,7 @@ minifb = "0.11.2"
 time = "0.1.42"
 bitfield = "0.13.1"
 bitflags = "1.1.0"
+zip = "0.5.3"
 
 [profile.dev]
 opt-level = 1

src/bin/cli.yml

@@ -16,6 +16,9 @@ args:
     - skip_bios:
         long: skip-bios
         help: Skip running bios and start from the ROM instead
+    - no_framerate_limit:
+        long: no-framerate-limit
+        help: Run without frame limiter
     - backend:
         long: backend
         takes_value: true

src/bin/main.rs

@@ -1,8 +1,14 @@
 use std::time;
+use std::fs::File;
+use std::path::Path;
+use std::ffi::OsStr;
+use std::io::prelude::*;
 
 #[macro_use]
 extern crate clap;
 
+extern crate zip;
+
 use clap::{App, ArgMatches};
 
 extern crate rustboyadvance_ng;
@@ -10,19 +16,35 @@ extern crate rustboyadvance_ng;
 use rustboyadvance_ng::backend::*;
 use rustboyadvance_ng::core::arm7tdmi::Core;
 use rustboyadvance_ng::core::cartridge::Cartridge;
-use rustboyadvance_ng::core::{GBAResult, GameBoyAdvance};
+use rustboyadvance_ng::core::{GBAError, GBAResult, GameBoyAdvance};
 use rustboyadvance_ng::debugger::Debugger;
 use rustboyadvance_ng::util::read_bin_file;
 
+
+fn load_rom(path: &str) -> GBAResult<Vec<u8>> {
+    if path.ends_with(".zip") {
+        let zipfile = File::open(path)?;
+        let mut archive = zip::ZipArchive::new(zipfile)?;
+        for i in 0..archive.len()
+        {
+            let mut file = archive.by_index(i)?;
+            if file.name().ends_with(".gba") {
+                let mut buf = Vec::new();
+                file.read_to_end(&mut buf)?;
+                return Ok(buf);
+            }
+        }
+        panic!("no .gba file contained in the zip file");
+    } else {
+        let buf = read_bin_file(path)?;
+        Ok(buf)
+    }
+}
+
 fn run_emulator(matches: &ArgMatches) -> GBAResult<()> {
-    let skip_bios = match matches.occurrences_of("skip_bios") {
-        0 => false,
-        _ => true,
-    };
-    let debug = match matches.occurrences_of("debug") {
-        0 => false,
-        _ => true,
-    };
+    let skip_bios = matches.occurrences_of("skip_bios") != 0;
+    let no_framerate_limit = matches.occurrences_of("no_framerate_limit") != 0;
+    let debug = matches.occurrences_of("debug") != 0;
 
     let backend: Box<EmulatorBackend> = match matches.value_of("backend") {
         Some("sdl2") => Box::new(Sdl2Backend::new()),
@@ -34,8 +56,9 @@ fn run_emulator(matches: &ArgMatches) -> GBAResult<()> {
 
     let bios_bin = read_bin_file(matches.value_of("bios").unwrap_or_default())?;
 
-    let gamepak = Cartridge::load(matches.value_of("game_rom").unwrap())?;
-    println!("loaded rom: {:#?}", gamepak.header);
+    let rom_bin = load_rom(matches.value_of("game_rom").unwrap())?;
+    let cart = Cartridge::new(rom_bin);
+    println!("loaded rom: {:#?}", cart.header);
 
     let mut core = Core::new();
     if skip_bios {
@@ -52,7 +75,7 @@ fn run_emulator(matches: &ArgMatches) -> GBAResult<()> {
         core.cpsr.set(0x5f);
     }
 
-    let mut gba = GameBoyAdvance::new(core, bios_bin, gamepak, backend);
+    let mut gba = GameBoyAdvance::new(core, bios_bin, cart, backend);
 
     if debug {
         gba.cpu.set_verbose(true);
@@ -67,10 +90,12 @@ fn run_emulator(matches: &ArgMatches) -> GBAResult<()> {
             gba.frame();
             let time_passed = start_time.elapsed();
             if time_passed <= frame_time {
+                if !no_framerate_limit {
                     ::std::thread::sleep(frame_time - time_passed);
                 }
             }
         }
+    }
 
     Ok(())
 }

src/core/cartridge.rs

@@ -4,8 +4,6 @@ use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
 
 use super::arm7tdmi::{bus::Bus, Addr};
 
-use crate::util::read_bin_file;
-
 /// From GBATEK
 ///
 /// The first 192 bytes at 8000000h-80000BFh in ROM are used as cartridge header. The same header is also used for Multiboot images at 2000000h-20000BFh (plus some additional multiboot entries at 20000C0h and up).
@@ -74,17 +72,16 @@ pub struct Cartridge {
 impl Cartridge {
     const MIN_SIZE: usize = 4 * 1024 * 1024;
 
-    pub fn load(path: &str) -> Result<Cartridge, ::std::io::Error> {
-        let mut rom_bin = read_bin_file(path)?;
+    pub fn new(mut rom_bin: Vec<u8>) -> Cartridge {
         if rom_bin.len() < Cartridge::MIN_SIZE {
             rom_bin.resize_with(Cartridge::MIN_SIZE, Default::default);
         }
 
         let header = CartridgeHeader::parse(&rom_bin);
-        Ok(Cartridge {
+        Cartridge {
             header: header,
             bytes: rom_bin.into_boxed_slice(),
-        })
+        }
     }
 }
 

src/core/mod.rs

@@ -16,6 +16,8 @@ pub mod timer;
 
 use crate::debugger;
 
+use zip;
+
 pub trait SyncedIoDevice {
     fn step(&mut self, cycles: usize, sb: &mut SysBus, irqs: &mut IrqBitmask);
 }
@@ -46,3 +48,9 @@ impl From<debugger::DebuggerError> for GBAError {
         GBAError::DebuggerError(err)
     }
 }
+
+impl From<zip::result::ZipError> for GBAError {
+    fn from(err: zip::result::ZipError) -> GBAError {
+        GBAError::IO(::std::io::Error::from(::std::io::ErrorKind::InvalidInput))
+    }
+}

src/lib.rs

@@ -18,6 +18,8 @@ extern crate nom;
 extern crate ansi_term;
 extern crate colored; // not needed in Rust 2018
 
+extern crate zip;
+
 #[macro_use]
 pub mod util;
 pub mod backend;