Add chrono integration

CHANGELOG.md

@@ -196,4 +196,5 @@
 
 ### Added
 
- - `zlib-ng` for fast Deflate compression. This is now the default for compression levels 0-9.
+ - `zlib-ng` for fast Deflate compression. This is now the default for compression levels 0-9.
+ - `chrono` to convert zip_next::DateTime to and from chrono::NaiveDateTime

Cargo.toml

@@ -16,6 +16,7 @@ edition = "2021"
 aes = { version = "0.8.2", optional = true }
 byteorder = "1.4.3"
 bzip2 = { version = "0.4.4", optional = true }
+chrono = { version = "0.4.25", optional = true }
 constant_time_eq = { version = "0.2.5", optional = true }
 crc32fast = "1.3.2"
 flate2 = { version = "1.0.26", default-features = false, optional = true }
@@ -40,6 +41,7 @@ time = { version = "0.3.21", features = ["formatting", "macros"] }
 
 [features]
 aes-crypto = [ "aes", "constant_time_eq", "hmac", "pbkdf2", "sha1" ]
+chrono = ["chrono/default"]
 deflate = ["flate2/rust_backend"]
 deflate-miniz = ["flate2/default"]
 deflate-zlib = ["flate2/zlib"]

README.md

@@ -54,6 +54,8 @@ The features available are:
   is the most effective `deflate` implementation available.
 * `bzip2`: Enables the BZip2 compression algorithm.
 * `time`: Enables features using the [time](https://github.com/rust-lang-deprecated/time) crate.
+* `chrono`: Enables converting last-modified `zip_next::DateTime` to and from `chrono::NaiveDateTime` and from 
+  `chrono::DateTime`.
 * `zstd`: Enables the Zstandard compression algorithm.
 
 By default `aes-crypto`, `deflate`, `deflate-zlib-ng`, `deflate-zopfli`, `bzip2`, `time` and `zstd` are enabled.

src/types.rs

@@ -3,6 +3,8 @@ use path::{Component, Path, PathBuf};
 use std::path;
 use std::sync::Arc;
 
+#[cfg(feature = "chrono")]
+use chrono::{Datelike, NaiveDate, NaiveDateTime, NaiveTime, Timelike};
 #[cfg(not(any(
     all(target_arch = "arm", target_pointer_width = "32"),
     target_arch = "mips",
@@ -116,6 +118,39 @@ impl arbitrary::Arbitrary<'_> for DateTime {
     }
 }
 
+#[cfg(feature = "chrono")]
+#[allow(clippy::result_unit_err)]
+impl<T> TryFrom<T> for DateTime
+where
+    T: Datelike + Timelike,
+{
+    type Error = ();
+
+    fn try_from(value: T) -> Result<Self, Self::Error> {
+        Ok(DateTime::from_date_and_time(
+            value.year().try_into()?,
+            value.month().try_into()?,
+            value.day().try_into()?,
+            value.hour().try_into()?,
+            value.minute().try_into()?,
+            value.second().try_into()?,
+        )?)
+    }
+}
+
+#[cfg(feature = "chrono")]
+#[allow(clippy::result_unit_err)]
+impl TryInto<NaiveDateTime> for DateTime {
+    type Error = ();
+
+    fn try_into(self) -> Result<NaiveDateTime, Self::Error> {
+        Ok(NaiveDateTime::new(
+            NaiveDate::from_ymd_opt(self.year.into(), self.month.into(), self.day.into())?,
+            NaiveTime::from_hms_opt(self.hour.into(), self.minute.into(), self.second.into())?,
+        ))
+    }
+}
+
 impl Default for DateTime {
     /// Constructs an 'default' datetime of 1980-01-01 00:00:00
     fn default() -> DateTime {