Stream local read_sheet scans with bounded memory

Cargo.toml

@@ -22,6 +22,7 @@ crate-type = ["staticlib"]
 [dependencies]
 anyhow = "1.0.100"
 chrono = { version = "0.4.42", features = ["serde"] }
+cfb = "0.14.0"
 codepage = "0.1.2"
 duckdb = { version = "1.4.3", features = ["vtab-loadable"] }
 either = "1.15.0"
@@ -32,5 +33,6 @@ libduckdb-sys = { version = "1.4.3", features = ["loadable-extension"] }
 quick-xml = "0.38.4"
 regex = "1.12.2"
 thiserror = "2.0.17"
+tempfile = "3.23.0"
 url = "2.5.7"
 zip = { version = "6.0.0", features = ["deflate"] }

src/error.rs

@@ -46,9 +46,6 @@ pub(crate) enum RustySheetError {
     XmlAttributeError(#[from] quick_xml::events::attributes::AttrError),
 
     // Helper module errors
-    #[error("{0}")]
-    CfbHelperError(#[from] crate::helpers::cfb::CfbError),
-
     #[error("{0}")]
     XmlHelperError(#[from] crate::helpers::xml::XmlError),
 
@@ -83,24 +80,6 @@ pub(crate) enum RustySheetError {
     ExtensionError(#[from] crate::extension::ExtensionError),
 }
 
-pub(crate) trait ResultOptionChain {
-    fn ok_none_else<F>(self, f: F) -> Self
-    where
-        F: FnOnce() -> Self;
-}
-
-impl<T, E> ResultOptionChain for Result<Option<T>, E> {
-    fn ok_none_else<F>(self, f: F) -> Self
-    where
-        F: FnOnce() -> Self,
-    {
-        match self {
-            Ok(None) => f(),
-            _ => self,
-        }
-    }
-}
-
 pub(crate) trait ResultMessage {
     fn with_prefix(self, message: &str) -> Self;
 }