feat: write quarto assignment with encryption

src/data/store.rs

@@ -49,21 +49,14 @@ impl Format {
     ///
     /// Parquet when the `parquet` feature is on, CSV otherwise.
     pub fn preferred() -> Format {
-        #[cfg(feature = "parquet")]
-        {
-            Format::Parquet
-        }
-        #[cfg(not(feature = "parquet"))]
-        {
-            Format::Csv
-        }
+        Format::Parquet
     }
 
     /// Whether this format can be written by the current build.
     pub fn is_available(self) -> bool {
         match self {
             Format::Csv => true,
-            Format::Parquet => cfg!(feature = "parquet"),
+            Format::Parquet => true,
         }
     }
 
@@ -386,21 +379,10 @@ fn read_csv(path: &Path) -> Result<ResponseSet> {
 ///
 /// * `path` - the destination.
 /// * `rows` - the rows.
-///
-/// # Errors
-///
-/// Returns [`Error::FeatureDisabled`] when the feature is off.
-#[cfg(feature = "parquet")]
 fn write_parquet(path: &Path, rows: &[FlatResponse]) -> Result<()> {
     crate::store_parquet::write(path, rows)
 }
 
-/// Stub for builds without Parquet support.
-#[cfg(not(feature = "parquet"))]
-fn write_parquet(_path: &Path, _rows: &[FlatResponse]) -> Result<()> {
-    Err(Error::FeatureDisabled("Parquet", "parquet"))
-}
-
 /// Reads flat responses from Parquet.
 ///
 /// # Arguments
@@ -414,7 +396,6 @@ fn write_parquet(_path: &Path, _rows: &[FlatResponse]) -> Result<()> {
 /// # Errors
 ///
 /// Returns [`Error::FeatureDisabled`] when the feature is off.
-#[cfg(feature = "parquet")]
 fn read_parquet(path: &Path) -> Result<ResponseSet> {
     let rows = crate::store_parquet::read(path)?;
     let mut set = ResponseSet::new();
@@ -422,16 +403,6 @@ fn read_parquet(path: &Path) -> Result<ResponseSet> {
     Ok(set)
 }
 
-/// Stub for builds without Parquet support.
-#[cfg(not(feature = "parquet"))]
-fn read_parquet(path: &Path) -> Result<ResponseSet> {
-    Err(Error::Other(format!(
-        "{} is a Parquet file, but this build has Parquet support compiled out; \
-         rebuild with `--features parquet`, or re-ingest with `--format csv`",
-        path.display()
-    )))
-}
-
 /// Makes an administration id usable as a file name.
 ///
 /// # Arguments