From 442e17f9a8fa5617eb0f257c29b1e506acbe9377 Mon Sep 17 00:00:00 2001
From: "Christoph J. Scherr" <Christoph.Scherr@newtec.de>
Date: Fri, 30 Aug 2024 17:39:10 +0200
Subject: [PATCH] fix: let logger use the crate name of the end-crate #91

---
 members/libpt-core/src/lib.rs | 13 +++++++++++++
 members/libpt-log/src/lib.rs  |  8 +++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/members/libpt-core/src/lib.rs b/members/libpt-core/src/lib.rs
index 848cd5c..93e71fd 100644
--- a/members/libpt-core/src/lib.rs
+++ b/members/libpt-core/src/lib.rs
@@ -8,3 +8,16 @@
 
 /// macros to make things faster in your code
 pub mod macros;
+
+/// ## Get the name of the crate that uses your library
+///
+/// Let's say you're writing the library `foo` and need the name of the crate that uses `foo`. With
+/// this function, you can get the name of the crate that uses `foo`.
+///
+/// Will return [None] if [`std::env::current_exe()`] errors or if conversion to [String] from [std::ffi::OsStr] fails.
+pub fn get_crate_name() -> Option<String> {
+    if let Ok(exe) = std::env::current_exe() {
+        return Some(exe.file_stem()?.to_str()?.to_string());
+    }
+    None
+}
diff --git a/members/libpt-log/src/lib.rs b/members/libpt-log/src/lib.rs
index fa5c697..e5f7f8b 100644
--- a/members/libpt-log/src/lib.rs
+++ b/members/libpt-log/src/lib.rs
@@ -480,5 +480,11 @@ impl Default for Logger {
 }
 
 fn new_file_appender(log_dir: PathBuf) -> tracing_appender::rolling::RollingFileAppender {
-    tracing_appender::rolling::daily(log_dir, format!("{}.log", env!("CARGO_CRATE_NAME")))
+    tracing_appender::rolling::daily(
+        log_dir,
+        format!(
+            "{}.log",
+            libpt_core::get_crate_name().unwrap_or_else(|| "logfile".to_string())
+        ),
+    )
 }