feat: set file commit time to git commit timestamp, unless changed

If a file is committed to git and hasn't been changed, use the latest
commit time for the file as the timestamp of the output file.

This lacks tests, as I find it too much of a bother to set up git
histories with timestamps.

Sponsored-by: author

1 files changed, 9 insertions, 0 deletions

diff --git a/src/error.rs b/src/error.rs
index aee8252..4fdcc1f 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -64,4 +64,13 @@ pub enum SiteError {
 
     #[error("failed to convert time to Unix time")]
     UnixTime(#[source] std::time::SystemTimeError),
+
+    #[error("failed to parse Unix timetamp: {0}")]
+    ParseUnixTimestamp(String, #[source] std::num::ParseIntError),
+
+    #[error("faileed to invoked git with subcommand {0} in {1}")]
+    GitInvoke(String, PathBuf, #[source] std::io::Error),
+
+    #[error("git {0} in in {1}:\n{2}")]
+    GitError(String, PathBuf, String),
 }