Document configuration file & more cleanup

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "objdiff"
-version = "0.3.1"
+version = "0.4.0"
 edition = "2021"
 rust-version = "1.65"
 authors = ["Luke Street <luke@street.dev>"]
@@ -11,6 +11,7 @@ description = """
 A local diffing tool for decompilation projects.
 """
 publish = false
+build = "build.rs"
 
 [profile.release]
 lto = "thin"
@@ -21,40 +22,44 @@ default = []
 wgpu = ["eframe/wgpu"]
 
 [dependencies]
-anyhow = "1.0.68"
-bytes = "1.3.0"
-cfg-if = "1.0.0"
-const_format = "0.2.30"
-cwdemangle = "0.1.5"
-eframe = { version = "0.20.1", features = ["persistence"] }
-egui = "0.20.1"
-egui_extras = "0.20.0"
-flagset = "0.4.3"
-log = "0.4.17"
-memmap2 = "0.5.8"
-notify = "5.0.0"
-object = { version = "0.30.2", features = ["read_core", "std", "elf"], default-features = false }
-png = "0.17.7"
-ppc750cl = { git = "https://github.com/terorie/ppc750cl", rev = "9ae36eef34aa6d74e00972c7671f547a2acfd0aa" }
-rabbitizer = "1.5.8"
-rfd = { version = "0.10.0" } #, default-features = false, features = ['xdg-portal']
-serde = { version = "1", features = ["derive"] }
-tempfile = "3.3.0"
-thiserror = "1.0.38"
-time = { version = "0.3.17", features = ["formatting", "local-offset"] }
-toml = "0.5.11"
-twox-hash = "1.6.3"
+anyhow = "1.0.71"
 byteorder = "1.4.3"
+bytes = "1.4.0"
+cfg-if = "1.0.0"
+const_format = "0.2.31"
+cwdemangle = "0.1.5"
+dirs = "5.0.1"
+eframe = { version = "0.22.0", features = ["persistence"] }
+egui = "0.22.0"
+egui_extras = "0.22.0"
+flagset = "0.4.3"
+globset = { version = "0.4.13", features = ["serde1"] }
+log = "0.4.19"
+memmap2 = "0.7.1"
+notify = "6.0.1"
+object = { version = "0.31.1", features = ["read_core", "std", "elf"], default-features = false }
+png = "0.17.9"
+ppc750cl = { git = "https://github.com/terorie/ppc750cl", rev = "9ae36eef34aa6d74e00972c7671f547a2acfd0aa" }
+rabbitizer = "1.7.4"
+rfd = { version = "0.11.4" } #, default-features = false, features = ['xdg-portal']
+serde = { version = "1", features = ["derive"] }
+serde_json = "1.0.104"
+serde_yaml = "0.9.25"
+tempfile = "3.6.0"
+thiserror = "1.0.41"
+time = { version = "0.3.22", features = ["formatting", "local-offset"] }
+toml = "0.7.6"
+twox-hash = "1.6.3"
 
 # For Linux static binaries, use rustls
 [target.'cfg(target_os = "linux")'.dependencies]
-reqwest = { version = "0.11.14", default-features = false, features = ["blocking", "json", "rustls"] }
-self_update = { version = "0.34.0", default-features = false, features = ["rustls"] }
+reqwest = { version = "0.11.18", default-features = false, features = ["blocking", "json", "rustls"] }
+self_update = { version = "0.37.0", default-features = false, features = ["rustls"] }
 
 # For all other platforms, use native TLS
 [target.'cfg(not(target_os = "linux"))'.dependencies]
-reqwest = "0.11.14"
-self_update = "0.34.0"
+reqwest = "0.11.18"
+self_update = "0.37.0"
 
 [target.'cfg(windows)'.dependencies]
 path-slash = "0.2.1"
@@ -76,5 +81,5 @@ console_error_panic_hook = "0.1.7"
 tracing-wasm = "0.2"
 
 [build-dependencies]
-anyhow = "1.0.68"
-vergen = { version = "7.5.0", features = ["build", "cargo", "git"], default-features = false }
+anyhow = "1.0.71"
+vergen = { version = "8.2.4", features = ["build", "cargo", "git", "gitcl"] }

README.md

@@ -5,14 +5,87 @@
 
 A local diffing tool for decompilation projects.
 
-Currently supports:
+Supports:
 - PowerPC 750CL (GameCube & Wii)
 - MIPS (Nintendo 64)
 
+See [Usage](#usage) for more information.
+
 ![Symbol Screenshot](assets/screen-symbols.png)
 ![Diff Screenshot](assets/screen-diff.png)
 
-### License
+## Usage
+
+objdiff works by comparing two relocatable object files (`.o`). The objects are expected to have the same relative path from the "target" and "base" directories.
+
+For example, if the target ("expected") object is located at `build/asm/MetroTRK/mslsupp.o` and the base ("actual") object 
+is located at `build/src/MetroTRK/mslsupp.o`, the following configuration would be used:
+
+- Target build directory: `build/asm`
+- Base build directory: `build/src`
+- Object: `MetroTRK/mslsupp.o`
+
+objdiff will then execute the build system from the project directory to build both objects:
+
+```sh
+$ make build/asm/MetroTRK/mslsupp.o # Only if "Build target object" is enabled
+$ make build/src/MetroTRK/mslsupp.o
+```
+
+The objects will then be compared and the results will be displayed in the UI.
+
+See [Configuration](#configuration) for more information.
+
+## Configuration
+
+While **not required** (most settings can be specified in the UI), projects can add an `objdiff.json` (or `objdiff.yaml`, `objdiff.yml`) file to configure the tool automatically. The configuration file must be located in the root project directory.
+
+```json5
+// objdiff.json
+{
+  "custom_make": "ninja",
+  "target_dir": "build/mp1.0/asm",
+  "base_dir": "build/mp1.0/src",
+  "build_target": true,
+  "watch_patterns": [
+    "*.c",
+    "*.cp",
+    "*.cpp",
+    "*.h",
+    "*.hpp",
+    "*.py"
+  ],
+  "objects": [
+    {
+      "path": "MetroTRK/mslsupp.o",
+      "name": "MetroTRK/mslsupp",
+      "reverse_fn_order": false
+    },
+    // ...
+  ]
+}
+```
+
+- `custom_make` _(optional)_: By default, objdiff will use `make` to build the project.  
+  If the project uses a different build system (e.g. `ninja`), specify it here.
+- `target_dir`: Relative from the root of the project, this where the "target" or "expected" objects are located.  
+  These are the **intended result** of the match.
+- `base_dir`: Relative from the root of the project, this is where the "base" or "actual" objects are located.  
+  These are objects built from the **current source code**.
+- `build_target`: If true, objdiff will tell the build system to build the target objects before diffing (e.g. `make path/to/target.o`).  
+  This is useful if the target objects are not built by default or can change based on project configuration or edits to assembly files.  
+  Requires the build system to be configured properly.
+- `watch_patterns` _(optional)_: A list of glob patterns to watch for changes. ([Supported syntax](https://docs.rs/globset/latest/globset/#syntax))  
+  If any of these files change, objdiff will automatically rebuild the objects and re-compare them.
+- `objects` _(optional)_: If specified, objdiff will display a list of objects in the sidebar for easy navigation.
+  - `path`: Relative path to the object from the `target_dir` and `base_dir`.
+  - `name` _(optional)_: The name of the object in the UI. If not specified, the object's `path` will be used.  
+  - `reverse_fn_order` _(optional)_: Displays function symbols in reversed order.  
+    Used to support MWCC's `-inline deferred` option, which reverses the order of functions in the object file.
+
+
+
+## License
 
 Licensed under either of
 

build.rs

@@ -1,10 +1,10 @@
 use anyhow::Result;
-use vergen::{vergen, Config};
+use vergen::EmitBuilder;
 
 fn main() -> Result<()> {
     #[cfg(windows)]
     {
         winres::WindowsResource::new().set_icon("assets/icon.ico").compile()?;
     }
-    vergen(Config::default())
+    EmitBuilder::builder().fail_on_error().all_build().all_cargo().all_git().emit()
 }

deny.toml

@@ -48,9 +48,11 @@ notice = "warn"
 # A list of advisory IDs to ignore. Note that ignored advisories will still
 # output a note when they are encountered.
 ignore = [
-    # git2 (build dependency)
-    "RUSTSEC-2023-0002",
-    "RUSTSEC-2023-0003",
+    "RUSTSEC-2023-0022",
+    "RUSTSEC-2023-0023",
+    "RUSTSEC-2023-0024",
+    "RUSTSEC-2023-0034",
+    "RUSTSEC-2023-0044",
 ]
 # Threshold for security vulnerabilities, any vulnerability with a CVSS score
 # lower than the range specified will be ignored. Note that ignored advisories
@@ -86,6 +88,7 @@ allow = [
     "OFL-1.1",
     "LicenseRef-UFL-1.0",
     "OpenSSL",
+    "GPL-3.0",
 ]
 # List of explictly disallowed licenses
 # See https://spdx.org/licenses/ for list of possible licenses

src/config.rs

@@ -0,0 +1,126 @@
+use std::{
+    fs::File,
+    path::{Component, Path, PathBuf},
+};
+
+use anyhow::{Context, Result};
+use globset::{Glob, GlobSet, GlobSetBuilder};
+
+use crate::app::AppConfig;
+
+#[derive(Default, Clone, serde::Deserialize)]
+#[serde(default)]
+pub struct ProjectConfig {
+    pub custom_make: Option<String>,
+    pub target_dir: Option<PathBuf>,
+    pub base_dir: Option<PathBuf>,
+    pub build_target: bool,
+    pub watch_patterns: Vec<Glob>,
+    #[serde(alias = "units")]
+    pub objects: Vec<ProjectObject>,
+}
+
+#[derive(Default, Clone, serde::Deserialize)]
+pub struct ProjectObject {
+    pub name: Option<String>,
+    pub path: PathBuf,
+    pub reverse_fn_order: Option<bool>,
+}
+
+#[derive(Clone)]
+pub enum ProjectObjectNode {
+    File(String, ProjectObject),
+    Dir(String, Vec<ProjectObjectNode>),
+}
+
+fn find_dir<'a>(
+    name: &str,
+    nodes: &'a mut Vec<ProjectObjectNode>,
+) -> &'a mut Vec<ProjectObjectNode> {
+    if let Some(index) = nodes
+        .iter()
+        .position(|node| matches!(node, ProjectObjectNode::Dir(dir_name, _) if dir_name == name))
+    {
+        if let ProjectObjectNode::Dir(_, children) = &mut nodes[index] {
+            return children;
+        }
+    } else {
+        nodes.push(ProjectObjectNode::Dir(name.to_string(), vec![]));
+        if let Some(ProjectObjectNode::Dir(_, children)) = nodes.last_mut() {
+            return children;
+        }
+    }
+    unreachable!();
+}
+
+fn build_nodes(objects: &[ProjectObject]) -> Vec<ProjectObjectNode> {
+    let mut nodes = vec![];
+    for object in objects {
+        let mut out_nodes = &mut nodes;
+        let path = object.name.as_ref().map(Path::new).unwrap_or(&object.path);
+        if let Some(parent) = path.parent() {
+            for component in parent.components() {
+                if let Component::Normal(name) = component {
+                    let name = name.to_str().unwrap();
+                    out_nodes = find_dir(name, out_nodes);
+                }
+            }
+        }
+        let filename = path.file_name().unwrap().to_str().unwrap().to_string();
+        out_nodes.push(ProjectObjectNode::File(filename, object.clone()));
+    }
+    nodes
+}
+
+pub const CONFIG_FILENAMES: [&str; 3] = ["objdiff.yml", "objdiff.yaml", "objdiff.json"];
+
+pub fn load_project_config(config: &mut AppConfig) -> Result<()> {
+    let Some(project_dir) = &config.project_dir else {
+        return Ok(());
+    };
+    if let Some(result) = try_project_config(project_dir) {
+        let project_config = result?;
+        config.custom_make = project_config.custom_make;
+        config.target_obj_dir = project_config.target_dir.map(|p| project_dir.join(p));
+        config.base_obj_dir = project_config.base_dir.map(|p| project_dir.join(p));
+        config.build_target = project_config.build_target;
+        config.watch_patterns = project_config.watch_patterns;
+        config.watcher_change = true;
+        config.objects = project_config.objects;
+        config.object_nodes = build_nodes(&config.objects);
+    }
+    Ok(())
+}
+
+fn try_project_config(dir: &Path) -> Option<Result<ProjectConfig>> {
+    for filename in CONFIG_FILENAMES.iter() {
+        let config_path = dir.join(filename);
+        if config_path.is_file() {
+            return match filename.contains("json") {
+                true => Some(read_json_config(&config_path)),
+                false => Some(read_yml_config(&config_path)),
+            };
+        }
+    }
+    None
+}
+
+fn read_yml_config(config_path: &Path) -> Result<ProjectConfig> {
+    let mut reader = File::open(config_path)
+        .with_context(|| format!("Failed to open config file '{}'", config_path.display()))?;
+    Ok(serde_yaml::from_reader(&mut reader)?)
+}
+
+fn read_json_config(config_path: &Path) -> Result<ProjectConfig> {
+    let mut reader = File::open(config_path)
+        .with_context(|| format!("Failed to open config file '{}'", config_path.display()))?;
+    Ok(serde_json::from_reader(&mut reader)?)
+}
+
+pub fn build_globset(vec: &[Glob]) -> std::result::Result<GlobSet, globset::Error> {
+    let mut builder = GlobSetBuilder::new();
+    for glob in vec {
+        builder.add(glob.clone());
+    }
+    builder.build()
+}

src/diff.rs

@@ -3,7 +3,6 @@ use std::{collections::BTreeMap, mem::take};
 use anyhow::Result;
 
 use crate::{
-    app::DiffConfig,
     editops::{editops_find, LevEditType},
     obj::{
         mips, ppc, ObjArchitecture, ObjDataDiff, ObjDataDiffKind, ObjInfo, ObjInsArg,
@@ -373,7 +372,7 @@ fn find_section_and_symbol(obj: &ObjInfo, name: &str) -> Option<(usize, usize)>
     None
 }
 
-pub fn diff_objs(left: &mut ObjInfo, right: &mut ObjInfo, _diff_config: &DiffConfig) -> Result<()> {
+pub fn diff_objs(left: &mut ObjInfo, right: &mut ObjInfo) -> Result<()> {
     for left_section in &mut left.sections {
         if left_section.kind == ObjSectionKind::Code {
             for left_symbol in &mut left_section.symbols {
@@ -406,7 +405,9 @@ pub fn diff_objs(left: &mut ObjInfo, right: &mut ObjInfo, _diff_config: &DiffCon
                 }
             }
         } else {
-            let Some(right_section) = right.sections.iter_mut().find(|s| s.name == left_section.name) else {
+            let Some(right_section) =
+                right.sections.iter_mut().find(|s| s.name == left_section.name)
+            else {
                 continue;
             };
             if left_section.kind == ObjSectionKind::Data {

src/editops.rs

@@ -76,18 +76,15 @@ where T: PartialEq {
             cache_matrix[current + 1 + p] = x;
         }
     }
-    editops_from_cost_matrix::<T>(matrix_columns, matrix_rows, prefix_len, cache_matrix)
+    editops_from_cost_matrix(matrix_columns, matrix_rows, prefix_len, cache_matrix)
 }
 
-fn editops_from_cost_matrix<T>(
+fn editops_from_cost_matrix(
     len1: usize,
     len2: usize,
     prefix_len: usize,
     cache_matrix: Vec<usize>,
-) -> Vec<LevEditOp>
-where
-    T: PartialEq,
-{
+) -> Vec<LevEditOp> {
     let mut ops = Vec::with_capacity(cache_matrix[len1 * len2 - 1]);
     let mut dir = 0;
     let mut i = len1 - 1;

src/jobs/bindiff.rs

@@ -1,44 +0,0 @@
-use std::sync::{mpsc::Receiver, Arc, RwLock};
-
-use anyhow::{Error, Result};
-
-use crate::{
-    app::{AppConfig, DiffConfig},
-    diff::diff_objs,
-    jobs::{queue_job, update_status, Job, JobResult, JobState, Status},
-    obj::{elf, ObjInfo},
-};
-
-pub struct BinDiffResult {
-    pub first_obj: ObjInfo,
-    pub second_obj: ObjInfo,
-}
-
-fn run_build(
-    status: &Status,
-    cancel: Receiver<()>,
-    config: Arc<RwLock<AppConfig>>,
-) -> Result<Box<BinDiffResult>> {
-    let config = config.read().map_err(|_| Error::msg("Failed to lock app config"))?.clone();
-    let target_path =
-        config.left_obj.as_ref().ok_or_else(|| Error::msg("Missing target obj path"))?;
-    let base_path = config.right_obj.as_ref().ok_or_else(|| Error::msg("Missing base obj path"))?;
-
-    update_status(status, "Loading target obj".to_string(), 0, 3, &cancel)?;
-    let mut left_obj = elf::read(target_path)?;
-
-    update_status(status, "Loading base obj".to_string(), 1, 3, &cancel)?;
-    let mut right_obj = elf::read(base_path)?;
-
-    update_status(status, "Performing diff".to_string(), 2, 3, &cancel)?;
-    diff_objs(&mut left_obj, &mut right_obj, &DiffConfig::default() /* TODO */)?;
-
-    update_status(status, "Complete".to_string(), 3, 3, &cancel)?;
-    Ok(Box::new(BinDiffResult { first_obj: left_obj, second_obj: right_obj }))
-}
-
-pub fn queue_bindiff(config: Arc<RwLock<AppConfig>>) -> JobState {
-    queue_job("Binary diff", Job::BinDiff, move |status, cancel| {
-        run_build(status, cancel, config).map(JobResult::BinDiff)
-    })
-}

src/jobs/check_update.rs

@@ -4,7 +4,7 @@ use anyhow::{Context, Result};
 use self_update::{cargo_crate_version, update::Release};
 
 use crate::{
-    jobs::{queue_job, update_status, Job, JobResult, JobState, Status},
+    jobs::{start_job, update_status, Job, JobResult, JobState, JobStatusRef},
     update::{build_updater, BIN_NAME},
 };
 
@@ -14,7 +14,7 @@ pub struct CheckUpdateResult {
     pub found_binary: bool,
 }
 
-fn run_check_update(status: &Status, cancel: Receiver<()>) -> Result<Box<CheckUpdateResult>> {
+fn run_check_update(status: &JobStatusRef, cancel: Receiver<()>) -> Result<Box<CheckUpdateResult>> {
     update_status(status, "Fetching latest release".to_string(), 0, 1, &cancel)?;
     let updater = build_updater().context("Failed to create release updater")?;
     let latest_release = updater.get_latest_release()?;
@@ -26,8 +26,8 @@ fn run_check_update(status: &Status, cancel: Receiver<()>) -> Result<Box<CheckUp
     Ok(Box::new(CheckUpdateResult { update_available, latest_release, found_binary }))
 }
 
-pub fn queue_check_update() -> JobState {
-    queue_job("Check for updates", Job::CheckUpdate, move |status, cancel| {
-        run_check_update(status, cancel).map(JobResult::CheckUpdate)
+pub fn start_check_update() -> JobState {
+    start_job("Check for updates", Job::CheckUpdate, move |status, cancel| {
+        run_check_update(status, cancel).map(|result| JobResult::CheckUpdate(Some(result)))
     })
 }

src/jobs/mod.rs

@@ -9,12 +9,8 @@ use std::{
 
 use anyhow::Result;
 
-use crate::jobs::{
-    bindiff::BinDiffResult, check_update::CheckUpdateResult, objdiff::ObjDiffResult,
-    update::UpdateResult,
-};
+use crate::jobs::{check_update::CheckUpdateResult, objdiff::ObjDiffResult, update::UpdateResult};
 
-pub mod bindiff;
 pub mod check_update;
 pub mod objdiff;
 pub mod update;
@@ -22,19 +18,88 @@ pub mod update;
 #[derive(Debug, Eq, PartialEq, Copy, Clone)]
 pub enum Job {
     ObjDiff,
-    BinDiff,
     CheckUpdate,
     Update,
 }
 pub static JOB_ID: AtomicUsize = AtomicUsize::new(0);
+
+#[derive(Default)]
+pub struct JobQueue {
+    pub jobs: Vec<JobState>,
+    pub results: Vec<JobResult>,
+}
+
+impl JobQueue {
+    /// Adds a job to the queue.
+    #[inline]
+    pub fn push(&mut self, state: JobState) { self.jobs.push(state); }
+
+    /// Adds a job to the queue if a job of the given kind is not already running.
+    #[inline]
+    pub fn push_once(&mut self, job: Job, func: impl FnOnce() -> JobState) {
+        if !self.is_running(job) {
+            self.push(func());
+        }
+    }
+
+    /// Returns whether a job of the given kind is running.
+    pub fn is_running(&self, kind: Job) -> bool {
+        self.jobs.iter().any(|j| j.kind == kind && j.handle.is_some())
+    }
+
+    /// Returns whether any job is running.
+    pub fn any_running(&self) -> bool {
+        self.jobs.iter().any(|job| {
+            if let Some(handle) = &job.handle {
+                return !handle.is_finished();
+            }
+            false
+        })
+    }
+
+    /// Iterates over all jobs mutably.
+    pub fn iter_mut(&mut self) -> impl Iterator<Item = &mut JobState> + '_ { self.jobs.iter_mut() }
+
+    /// Iterates over all finished jobs, returning the job state and the result.
+    pub fn iter_finished(
+        &mut self,
+    ) -> impl Iterator<Item = (&mut JobState, std::thread::Result<JobResult>)> + '_ {
+        self.jobs.iter_mut().filter_map(|job| {
+            if let Some(handle) = &job.handle {
+                if !handle.is_finished() {
+                    return None;
+                }
+                let result = job.handle.take().unwrap().join();
+                return Some((job, result));
+            }
+            None
+        })
+    }
+
+    /// Clears all finished jobs.
+    pub fn clear_finished(&mut self) {
+        self.jobs.retain(|job| {
+            !(job.should_remove
+                && job.handle.is_none()
+                && job.status.read().unwrap().error.is_none())
+        });
+    }
+
+    /// Removes a job from the queue given its ID.
+    pub fn remove(&mut self, id: usize) { self.jobs.retain(|job| job.id != id); }
+}
+
+pub type JobStatusRef = Arc<RwLock<JobStatus>>;
+
 pub struct JobState {
     pub id: usize,
-    pub job_type: Job,
+    pub kind: Job,
     pub handle: Option<JoinHandle<JobResult>>,
-    pub status: Arc<RwLock<JobStatus>>,
+    pub status: JobStatusRef,
     pub cancel: Sender<()>,
     pub should_remove: bool,
 }
+
 #[derive(Default)]
 pub struct JobStatus {
     pub title: String,
@@ -43,11 +108,11 @@ pub struct JobStatus {
     pub status: String,
     pub error: Option<anyhow::Error>,
 }
+
 pub enum JobResult {
     None,
-    ObjDiff(Box<ObjDiffResult>),
-    BinDiff(Box<BinDiffResult>),
-    CheckUpdate(Box<CheckUpdateResult>),
+    ObjDiff(Option<Box<ObjDiffResult>>),
+    CheckUpdate(Option<Box<CheckUpdateResult>>),
     Update(Box<UpdateResult>),
 }
 
@@ -58,12 +123,10 @@ fn should_cancel(rx: &Receiver<()>) -> bool {
     }
 }
 
-type Status = Arc<RwLock<JobStatus>>;
-
-fn queue_job(
+fn start_job(
     title: &str,
-    job_type: Job,
-    run: impl FnOnce(&Status, Receiver<()>) -> Result<JobResult> + Send + 'static,
+    kind: Job,
+    run: impl FnOnce(&JobStatusRef, Receiver<()>) -> Result<JobResult> + Send + 'static,
 ) -> JobState {
     let status = Arc::new(RwLock::new(JobStatus {
         title: title.to_string(),
@@ -89,7 +152,7 @@ fn queue_job(
     log::info!("Started job {}", id);
     JobState {
         id,
-        job_type,
+        kind,
         handle: Some(handle),
         status: status_clone,
         cancel: tx,
@@ -98,7 +161,7 @@ fn queue_job(
 }
 
 fn update_status(
-    status: &Status,
+    status: &JobStatusRef,
     str: String,
     count: u32,
     total: u32,

src/jobs/objdiff.rs

@@ -1,17 +1,12 @@
-use std::{
-    path::Path,
-    process::Command,
-    str::from_utf8,
-    sync::{mpsc::Receiver, Arc, RwLock},
-};
+use std::{path::Path, process::Command, str::from_utf8, sync::mpsc::Receiver};
 
 use anyhow::{Context, Error, Result};
 use time::OffsetDateTime;
 
 use crate::{
-    app::{AppConfig, DiffConfig},
+    app::{AppConfig, AppConfigRef},
     diff::diff_objs,
-    jobs::{queue_job, update_status, Job, JobResult, JobState, Status},
+    jobs::{start_job, update_status, Job, JobResult, JobState, JobStatusRef},
     obj::{elf, ObjInfo},
 };
 
@@ -76,10 +71,9 @@ fn run_make(cwd: &Path, arg: &Path, config: &AppConfig) -> BuildStatus {
 }
 
 fn run_build(
-    status: &Status,
+    status: &JobStatusRef,
     cancel: Receiver<()>,
-    config: Arc<RwLock<AppConfig>>,
-    diff_config: DiffConfig,
+    config: AppConfigRef,
 ) -> Result<Box<ObjDiffResult>> {
     let config = config.read().map_err(|_| Error::msg("Failed to lock app config"))?.clone();
     let obj_path = config.obj_path.as_ref().ok_or_else(|| Error::msg("Missing obj path"))?;
@@ -129,15 +123,15 @@ fn run_build(
 
     if let (Some(first_obj), Some(second_obj)) = (&mut first_obj, &mut second_obj) {
         update_status(status, "Performing diff".to_string(), 4, total, &cancel)?;
-        diff_objs(first_obj, second_obj, &diff_config)?;
+        diff_objs(first_obj, second_obj)?;
     }
 
     update_status(status, "Complete".to_string(), total, total, &cancel)?;
     Ok(Box::new(ObjDiffResult { first_status, second_status, first_obj, second_obj, time }))
 }
 
-pub fn queue_build(config: Arc<RwLock<AppConfig>>, diff_config: DiffConfig) -> JobState {
-    queue_job("Object diff", Job::ObjDiff, move |status, cancel| {
-        run_build(status, cancel, config, diff_config).map(JobResult::ObjDiff)
+pub fn start_build(config: AppConfigRef) -> JobState {
+    start_job("Object diff", Job::ObjDiff, move |status, cancel| {
+        run_build(status, cancel, config).map(|result| JobResult::ObjDiff(Some(result)))
     })
 }

src/jobs/update.rs

@@ -9,7 +9,7 @@ use anyhow::{Context, Result};
 use const_format::formatcp;
 
 use crate::{
-    jobs::{queue_job, update_status, Job, JobResult, JobState, Status},
+    jobs::{start_job, update_status, Job, JobResult, JobState, JobStatusRef},
     update::{build_updater, BIN_NAME},
 };
 
@@ -17,7 +17,7 @@ pub struct UpdateResult {
     pub exe_path: PathBuf,
 }
 
-fn run_update(status: &Status, cancel: Receiver<()>) -> Result<Box<UpdateResult>> {
+fn run_update(status: &JobStatusRef, cancel: Receiver<()>) -> Result<Box<UpdateResult>> {
     update_status(status, "Fetching latest release".to_string(), 0, 3, &cancel)?;
     let updater = build_updater().context("Failed to create release updater")?;
     let latest_release = updater.get_latest_release()?;
@@ -53,8 +53,8 @@ fn run_update(status: &Status, cancel: Receiver<()>) -> Result<Box<UpdateResult>
     Ok(Box::from(UpdateResult { exe_path: target_file }))
 }
 
-pub fn queue_update() -> JobState {
-    queue_job("Update app", Job::Update, move |status, cancel| {
+pub fn start_update() -> JobState {
+    start_job("Update app", Job::Update, move |status, cancel| {
         run_update(status, cancel).map(JobResult::Update)
     })
 }

src/lib.rs

@@ -3,6 +3,7 @@
 pub use app::App;
 
 mod app;
+mod config;
 mod diff;
 mod editops;
 mod jobs;

src/main.rs

@@ -37,7 +37,8 @@ fn main() {
 
     let exec_path: Rc<Mutex<Option<PathBuf>>> = Rc::new(Mutex::new(None));
     let exec_path_clone = exec_path.clone();
-    let mut native_options = eframe::NativeOptions::default();
+    let mut native_options =
+        eframe::NativeOptions { follow_system_theme: false, ..Default::default() };
     match load_icon() {
         Ok(data) => {
             native_options.icon_data = Some(data);
@@ -54,7 +55,8 @@ fn main() {
         "objdiff",
         native_options,
         Box::new(move |cc| Box::new(objdiff::App::new(cc, utc_offset, exec_path_clone))),
-    );
+    )
+    .expect("Failed to run eframe application");
 
     // Attempt to relaunch application from the updated path
     if let Ok(mut guard) = exec_path.lock() {
@@ -64,7 +66,7 @@ fn main() {
                     let result = exec::Command::new(path)
                         .args(&std::env::args().collect::<Vec<String>>())
                         .exec();
-                    eprintln!("Failed to relaunch: {result:?}");
+                    log::error!("Failed to relaunch: {result:?}");
                 } else {
                     let result = std::process::Command::new(path)
                         .args(std::env::args())
@@ -72,7 +74,7 @@ fn main() {
                         .unwrap()
                         .wait();
                     if let Err(e) = result {
-                        eprintln!("Failed to relaunch: {:?}", e);
+                        log::error!("Failed to relaunch: {:?}", e);
                     }
                 }
             }

src/obj/elf.rs

@@ -26,7 +26,7 @@ fn to_obj_section_kind(kind: SectionKind) -> Option<ObjSectionKind> {
 fn to_obj_symbol(obj_file: &File<'_>, symbol: &Symbol<'_, '_>, addend: i64) -> Result<ObjSymbol> {
     let mut name = symbol.name().context("Failed to process symbol name")?;
     if name.is_empty() {
-        println!("Found empty sym: {symbol:?}");
+        log::warn!("Found empty sym: {symbol:?}");
         name = "?";
     }
     let mut flags = ObjSymbolFlagSet(ObjSymbolFlags::none());
@@ -126,7 +126,8 @@ fn symbols_by_section(obj_file: &File<'_>, section: &ObjSection) -> Result<Vec<O
 }
 
 fn common_symbols(obj_file: &File<'_>) -> Result<Vec<ObjSymbol>> {
-    obj_file.symbols()
+    obj_file
+        .symbols()
         .filter(Symbol::is_common)
         .map(|symbol| to_obj_symbol(obj_file, &symbol, 0))
         .collect::<Result<Vec<ObjSymbol>>>()
@@ -180,7 +181,7 @@ fn find_section_symbol(
 fn relocations_by_section(
     arch: ObjArchitecture,
     obj_file: &File<'_>,
-    section: &mut ObjSection,
+    section: &ObjSection,
 ) -> Result<Vec<ObjReloc>> {
     let obj_section = obj_file.section_by_index(SectionIndex(section.index))?;
     let mut relocations = Vec::<ObjReloc>::new();
@@ -293,7 +294,7 @@ fn line_info(obj_file: &File<'_>) -> Result<Option<BTreeMap<u32, u32>>> {
             let address_delta = reader.read_u32::<BigEndian>()?;
             map.insert(base_address + address_delta, line_number);
         }
-        println!("Line info: {map:#X?}");
+        log::debug!("Line info: {map:#X?}");
         return Ok(Some(map));
     }
     Ok(None)

src/views/appearance.rs

@@ -0,0 +1,139 @@
+use egui::{Color32, FontFamily, FontId, TextStyle};
+use time::UtcOffset;
+
+#[derive(serde::Deserialize, serde::Serialize)]
+#[serde(default)]
+pub struct Appearance {
+    pub ui_font: FontId,
+    pub code_font: FontId,
+    pub diff_colors: Vec<Color32>,
+    pub theme: eframe::Theme,
+
+    // Applied by theme
+    #[serde(skip)]
+    pub text_color: Color32, // GRAY
+    #[serde(skip)]
+    pub emphasized_text_color: Color32, // LIGHT_GRAY
+    #[serde(skip)]
+    pub deemphasized_text_color: Color32, // DARK_GRAY
+    #[serde(skip)]
+    pub highlight_color: Color32, // WHITE
+    #[serde(skip)]
+    pub replace_color: Color32, // LIGHT_BLUE
+    #[serde(skip)]
+    pub insert_color: Color32, // GREEN
+    #[serde(skip)]
+    pub delete_color: Color32, // RED
+
+    // Global
+    #[serde(skip)]
+    pub utc_offset: UtcOffset,
+}
+
+impl Default for Appearance {
+    fn default() -> Self {
+        Self {
+            ui_font: FontId { size: 12.0, family: FontFamily::Proportional },
+            code_font: FontId { size: 14.0, family: FontFamily::Monospace },
+            diff_colors: DEFAULT_COLOR_ROTATION.to_vec(),
+            theme: eframe::Theme::Dark,
+            text_color: Color32::GRAY,
+            emphasized_text_color: Color32::LIGHT_GRAY,
+            deemphasized_text_color: Color32::DARK_GRAY,
+            highlight_color: Color32::WHITE,
+            replace_color: Color32::LIGHT_BLUE,
+            insert_color: Color32::GREEN,
+            delete_color: Color32::from_rgb(200, 40, 41),
+            utc_offset: UtcOffset::UTC,
+        }
+    }
+}
+
+impl Appearance {
+    pub fn apply(&mut self, style: &egui::Style) -> egui::Style {
+        let mut style = style.clone();
+        style.text_styles.insert(TextStyle::Body, FontId {
+            size: (self.ui_font.size * 0.75).floor(),
+            family: self.ui_font.family.clone(),
+        });
+        style.text_styles.insert(TextStyle::Body, self.ui_font.clone());
+        style.text_styles.insert(TextStyle::Button, self.ui_font.clone());
+        style.text_styles.insert(TextStyle::Heading, FontId {
+            size: (self.ui_font.size * 1.5).floor(),
+            family: self.ui_font.family.clone(),
+        });
+        style.text_styles.insert(TextStyle::Monospace, self.code_font.clone());
+        match self.theme {
+            eframe::Theme::Dark => {
+                style.visuals = egui::Visuals::dark();
+                self.text_color = Color32::GRAY;
+                self.emphasized_text_color = Color32::LIGHT_GRAY;
+                self.deemphasized_text_color = Color32::DARK_GRAY;
+                self.highlight_color = Color32::WHITE;
+                self.replace_color = Color32::LIGHT_BLUE;
+                self.insert_color = Color32::GREEN;
+                self.delete_color = Color32::from_rgb(200, 40, 41);
+            }
+            eframe::Theme::Light => {
+                style.visuals = egui::Visuals::light();
+                self.text_color = Color32::GRAY;
+                self.emphasized_text_color = Color32::DARK_GRAY;
+                self.deemphasized_text_color = Color32::LIGHT_GRAY;
+                self.highlight_color = Color32::BLACK;
+                self.replace_color = Color32::DARK_BLUE;
+                self.insert_color = Color32::DARK_GREEN;
+                self.delete_color = Color32::from_rgb(200, 40, 41);
+            }
+        }
+        style
+    }
+}
+
+pub const DEFAULT_COLOR_ROTATION: [Color32; 9] = [
+    Color32::from_rgb(255, 0, 255),
+    Color32::from_rgb(0, 255, 255),
+    Color32::from_rgb(0, 128, 0),
+    Color32::from_rgb(255, 0, 0),
+    Color32::from_rgb(255, 255, 0),
+    Color32::from_rgb(255, 192, 203),
+    Color32::from_rgb(0, 0, 255),
+    Color32::from_rgb(0, 255, 0),
+    Color32::from_rgb(213, 138, 138),
+];
+
+pub fn appearance_window(ctx: &egui::Context, show: &mut bool, appearance: &mut Appearance) {
+    egui::Window::new("Appearance").open(show).show(ctx, |ui| {
+        egui::ComboBox::from_label("Theme")
+            .selected_text(format!("{:?}", appearance.theme))
+            .show_ui(ui, |ui| {
+                ui.selectable_value(&mut appearance.theme, eframe::Theme::Dark, "Dark");
+                ui.selectable_value(&mut appearance.theme, eframe::Theme::Light, "Light");
+            });
+        ui.label("UI font:");
+        egui::introspection::font_id_ui(ui, &mut appearance.ui_font);
+        ui.separator();
+        ui.label("Code font:");
+        egui::introspection::font_id_ui(ui, &mut appearance.code_font);
+        ui.separator();
+        ui.label("Diff colors:");
+        if ui.button("Reset").clicked() {
+            appearance.diff_colors = DEFAULT_COLOR_ROTATION.to_vec();
+        }
+        let mut remove_at: Option<usize> = None;
+        let num_colors = appearance.diff_colors.len();
+        for (idx, color) in appearance.diff_colors.iter_mut().enumerate() {
+            ui.horizontal(|ui| {
+                ui.color_edit_button_srgba(color);
+                if num_colors > 1 && ui.small_button("-").clicked() {
+                    remove_at = Some(idx);
+                }
+            });
+        }
+        if let Some(idx) = remove_at {
+            appearance.diff_colors.remove(idx);
+        }
+        if ui.small_button("+").clicked() {
+            appearance.diff_colors.push(Color32::BLACK);
+        }
+    });
+}