fix: Restore original file timestamp when unzipping with chrono

src/read.rs

@@ -979,6 +979,10 @@
                     files_by_unix_mode.push((outpath.clone(), mode));
                 }
             }
+            // Set original timestamp.
+            if let Some(t) = datetime_to_systemtime(&file.last_modified()) {
+                outfile.set_modified(t)?;
+            }
         }
         #[cfg(unix)]
         {
@@ -1714,6 +1718,33 @@
     }))
 }
 
+/// Generate a `SystemTime` from a `DateTime`.
+fn datetime_to_systemtime(datetime: &DateTime) -> Option<std::time::SystemTime> {
+    if let Some(t) = generate_chrono_datetime(datetime) {
+        let time = chrono::DateTime::<chrono::Utc>::from_naive_utc_and_offset(t, chrono::Utc);
+        return Some(time.into());
+    }
+    None
+}
+
+/// Generate a `NaiveDateTime` from a `DateTime`.
+fn generate_chrono_datetime(datetime: &DateTime) -> Option<chrono::NaiveDateTime> {
+    if let Some(d) = chrono::NaiveDate::from_ymd_opt(
+        datetime.year().into(),
+        datetime.month().into(),
+        datetime.day().into(),
+    ) {
+        if let Some(d) = d.and_hms_opt(
+            datetime.hour().into(),
+            datetime.minute().into(),
+            datetime.second().into(),
+        ) {
+            return Some(d);
+        }
+    }
+    None
+}
+
 #[cfg(test)]
 mod test {
     use crate::result::ZipResult;