chore(dumper): docs

elfo-dumper/src/config.rs

@@ -43,6 +43,9 @@ pub struct Config {
     /// A path to a dump file or template:
     /// * `path/all.dump` - one file.
     /// * `path/{class}.dump` - file per class.
+    /// * `path/{time:<FORMAT>}.dump` - file per dump time. The `<FORMAT>`
+    ///   refers to the time format as in strftime:
+    ///   <https://cplusplus.com/reference/ctime/strftime/> (`man strftime(3)`).
     pub path: DumpPath,
     /// How often dumpers should write dumps to files.
     /// `500ms` by default.

elfo-dumper/src/config/dump_path.rs

@@ -190,7 +190,7 @@ enum Variable {
 
     /// Time of the dump.
     Time {
-        /// strptime string format.
+        /// strftime string format.
         format: cstr::Utf8CString,
     },
 }
@@ -241,7 +241,7 @@ fn strftime(ts: i64, format: &cstr::Utf8CString, dest: &mut String) -> bool {
     unsafe {
         // 1. mem::transmute wouldn't compile if u8 and libc::c_char differ in size
         // (there are strange circumstances).
-        // 2. `libc::c_char` to i8 is i8 -> u8 conversion, thus converting
+        // 2. `libc::c_char` to u8 is i8 -> u8 conversion, thus converting
         // same-sized arrays through transmute is safe (btw transmute checks that
         // condition in compile time)
         let u8_array = std::mem::transmute::<