config updater (auto and manual)

src/config_installer.rs

@@ -4,7 +4,7 @@ use std::process::Command;
 use std::ffi::OsStr;
 use std::path::Path;
 
-use crate::fail::{HError, HResult};
+use crate::fail::{HError, HResult, ErrorLog};
 use crate::widget::WidgetCore;
 
 
@@ -77,16 +77,18 @@ fn install_config_all() -> HResult<()> {
     Ok(())
 }
 
-fn move_dir(from: &str, to: &Path) -> HResult<()> {
-    let success = Command::new("mv")
+fn copy(from: &Path, to: &Path) -> HResult<()> {
+    // Uses -a flag to preserve symlinks
+    let success = Command::new("cp")
+        .arg("-a")
         .arg(from)
         .arg(to.as_os_str())
         .status()
         .map(|s| s.success());
 
     if success.is_err() || !success.unwrap() {
-        HError::log(&format!("Couldn't move {} to {} !",
-                             from,
+        HError::log(&format!("Couldn't copy {} to {} !",
+                             from.to_string_lossy(),
                              to.to_string_lossy()))
     } else {
         Ok(())
@@ -97,7 +99,7 @@ fn install_config_previewers() -> HResult<()> {
     let hunter_dir = crate::paths::hunter_path()?;
     let archive_path = create_archive()?;
     extract_archive(Path::new("/tmp"), &archive_path)?;
-    move_dir("/tmp/hunter/previewers", &hunter_dir)?;
+    copy(Path::new("/tmp/hunter/previewers"), &hunter_dir)?;
     delete_archive(&archive_path)
 }
 
@@ -105,10 +107,74 @@ fn install_config_actions() -> HResult<()> {
     let hunter_dir = crate::paths::hunter_path()?;
     let archive_path = create_archive()?;
     extract_archive(Path::new("/tmp"), &archive_path)?;
-    move_dir("/tmp/hunter/actions", &hunter_dir)?;
+    copy(Path::new("/tmp/hunter/actions"), &hunter_dir)?;
     delete_archive(&archive_path)
 }
 
+fn update_previewer() -> HResult<()> {
+    let previewer_dir = crate::paths::previewers_path()?;
+    let archive_path = create_archive()?;
+
+    extract_archive(Path::new("/tmp"), &archive_path)?;
+
+    update_dir(Path::new("/tmp/hunter/previewers"), &previewer_dir).log();
+
+    delete_archive(&archive_path)?;
+
+    Ok(())
+}
+
+fn update_actions() -> HResult<()> {
+    let actions_dir = crate::paths::actions_path()?;
+    let archive_path = create_archive()?;
+
+    extract_archive(Path::new("/tmp"), &archive_path)?;
+
+    update_dir(Path::new("/tmp/hunter/actions"), &actions_dir).log();
+
+    delete_archive(&archive_path)?;
+
+    Ok(())
+}
+
+pub fn update_config(core: WidgetCore, force: bool) -> HResult<()> {
+    // First install whatever might be missing, makes sure all dirs are there
+    ensure_config(core).log();
+
+    // Just overwrite everything except core config/keys with the latest version
+    if force {
+        install_config_previewers().log();
+        install_config_actions().log();
+        return Ok(())
+    }
+
+    let archive_path = create_archive()?;
+    extract_archive(Path::new("/tmp"), &archive_path)?;
+    Ok(())
+}
+
+fn update_dir<P: AsRef<Path>>(source: P, target: P) -> HResult<()> {
+    for file in std::fs::read_dir(source)? {
+        let file_path = file?.path();
+        let file_name = file_path.file_name()?;
+        let target_path = target.as_ref().join(file_name);
+
+        if file_path.is_dir() {
+            // Check subdirectories recursively
+            update_dir(&file_path, &target_path).log();
+        } else {
+            if !target_path.exists() {
+                HError::log::<()>(&format!("Installing additional config file: {}",
+                                           file_path.to_string_lossy())).ok();
+                copy(&file_path, &target_path).log();
+            }
+        }
+    }
+
+    Ok(())
+}
+
+
 fn create_archive() -> HResult<&'static str> {
     let archive_path = "/tmp/hunter-config.tar.gz";
     let def_config = default_config_archive();

src/file_browser.rs

@@ -87,14 +87,6 @@ pub struct FileBrowser {
 }
 
 impl Tabbable for TabView<FileBrowser> {
-    fn on_new(&mut self) -> HResult<()> {
-        let core = self.core.clone();
-        std::thread::spawn(move || {
-            crate::config_installer::ensure_config(core).log();
-        });
-        Ok(())
-    }
-
     fn new_tab(&mut self) -> HResult<()> {
         let cur_tab = self.active_tab_();
 

src/main.rs

@@ -72,7 +72,7 @@ mod keybind;
 
 use widget::{Widget, WidgetCore};
 use term::ScreenExt;
-use fail::{HResult, HError, MimeError};
+use fail::{HResult, HError, MimeError, ErrorLog};
 use file_browser::FileBrowser;
 use tabview::TabView;
 use trait_ext::PathBufMime;
@@ -97,10 +97,10 @@ fn main() -> HResult<()> {
     // do this early so it might be ready when needed
     crate::files::load_tags().ok();
 
-    parse_args().ok();
-
     let mut core = WidgetCore::new().expect("Can't create WidgetCore!");
 
+    parse_args(core.clone()).log();
+
     // Resets terminal when hunter crashes :(
     die_gracefully(&core);
 
@@ -117,6 +117,13 @@ fn main() -> HResult<()> {
 fn run(mut core: WidgetCore) -> HResult<()> {
     core.screen.clear()?;
 
+    let core2 = core.clone();
+
+    // I hate waiting!!!
+    std::thread::spawn(move || {
+        crate::config_installer::ensure_config(core2).log();
+    });
+
     let filebrowser = FileBrowser::new(&core, None)?;
     let mut tabview = TabView::new(&core);
     tabview.push_widget(filebrowser)?;
@@ -130,11 +137,17 @@ fn run(mut core: WidgetCore) -> HResult<()> {
 }
 
 
-fn parse_args() -> HResult<()> {
+fn parse_args(core: WidgetCore) -> HResult<()> {
     let args = App::new("Lag-free terminal file browser")
         .version(clap::crate_version!())
         .author(clap::crate_authors!("\n"))
         .about("Hunt your files at light-speed, armed with full $SHELL integration")
+        .arg(
+            Arg::with_name("update")
+                .short("u")
+                .long("update-conf")
+                .help("Update configuration (WARNING: Overwrites modified previewers/actions with default names! Main config/keys are safe!)")
+                .takes_value(false))
         .arg(
             Arg::with_name("animation-off")
                 .short("a")
@@ -185,11 +198,17 @@ fn parse_args() -> HResult<()> {
         std::process::exit(1)
     }
 
-    if let Some(path) = path {
-        std::env::set_current_dir(&path).ok();
+    if args.is_present("update") {
+        crate::config_installer::update_config(core, true).log();
     }
 
-    crate::config::set_argv_config(args).ok();
+    if let Some(path) = path {
+        std::env::set_current_dir(&path)
+            .map_err(HError::from)
+            .log();
+    }
+
+    crate::config::set_argv_config(args).log();
     Ok(())
 }