project: don't create .hemttout when not needed (#840)

bin/src/context.rs

@@ -78,6 +78,9 @@ impl Context {
         trace!("using temporary folder: {:?}", tmp.display());
         let hemtt_folder = root.join(".hemtt");
         trace!("using project folder: {:?}", root.display());
+        if !hemtt_folder.exists() {
+            return Err(Error::ConfigNotFound);
+        }
         let out_folder = root.join(".hemttout");
         trace!("using out folder: {:?}", out_folder.display());
         create_dir_all(&out_folder)?;

bin/src/lib.rs

@@ -91,8 +91,11 @@ pub fn execute(cli: &Cli) -> Result<(), Error> {
     if !in_test && !matches!(cli.command, Some(Commands::Value(_))) {
         logging::init(
             cli.global.verbosity,
-            !matches!(cli.command, Some(Commands::Utils(_))),
-        );
+            !matches!(
+                cli.command,
+                Some(Commands::Utils(_) | Commands::Wiki(_) | Commands::New(_) | Commands::Book(_))
+            ),
+        )?;
     }
 
     #[cfg(debug_assertions)]

bin/src/logging.rs

@@ -8,11 +8,16 @@ use tracing_subscriber::{
     prelude::__tracing_subscriber_SubscriberExt, util::SubscriberInitExt, Layer,
 };
 
+use crate::Error;
+
 /// Initialize the logger
 ///
+/// # Errors
+/// If `hemttout` is true, but no `.hemtt` folder is found
+///
 /// # Panics
 /// If the log file could not be created
-pub fn init(verbosity: u8, hemttout: bool) {
+pub fn init(verbosity: u8, hemttout: bool) -> Result<(), Error> {
     let format = tracing_subscriber::fmt::format()
         .without_time()
         .with_target(false)
@@ -31,6 +36,12 @@ pub fn init(verbosity: u8, hemttout: bool) {
     };
 
     if hemttout {
+        if !std::path::Path::new(".hemtt").exists() {
+            tracing_subscriber::registry()
+                .with(stdout.with_filter(filter))
+                .init();
+            return Err(Error::ConfigNotFound);
+        }
         create_dir_all(".hemttout").expect("Unable to create `.hemttout`");
         let out_file =
             File::create(".hemttout/latest.log").expect("Unable to create `.hemttout/latest.log`");
@@ -48,4 +59,6 @@ pub fn init(verbosity: u8, hemttout: bool) {
             .with(stdout.with_filter(filter))
             .init();
     }
+
+    Ok(())
 }