Add "never" in quote_style

DESCRIPTION

@@ -112,5 +112,5 @@ Collate:
     'zzz.R'
 Config/rextendr/version: 0.3.1
 VignetteBuilder: knitr
-Config/polars/LibVersion: 0.34.0
+Config/polars/LibVersion: 0.34.1
 Config/polars/RustToolchainVersion: nightly-2023-10-12

NEWS.md

@@ -1,5 +1,10 @@
 # polars (development version)
 
+## What's changed
+
+- The argument `quote_style` in `$write_csv()` and `$sink_csv()` can now take 
+  the value `"never"` (#483).
+
 # polars 0.10.0
 
 ## BREAKING CHANGES DUE TO RUST-POLARS UPDATE

R/dataframe__frame.R

@@ -1749,11 +1749,9 @@ DataFrame_transpose = function(
 #' * `"non_numeric"`: This puts quotes around all fields that are non-numeric.
 #'   Namely, when writing a field that does not parse as a valid float or integer,
 #'   then quotes will be used even if they aren`t strictly necessary.
-
-# TODO: include "never" when bumping rust-polars to 0.34
-# * `"never"`: This never puts quotes around fields, even if that results in
-#   invalid CSV data (e.g.: by not quoting strings containing the separator).
-
+#' * `"never"`: This never puts quotes around fields, even if that results in
+#'   invalid CSV data (e.g. by not quoting strings containing the separator).
+#'
 #' @return
 #' This doesn't return anything but creates a CSV file.
 #'

README.md

@@ -108,15 +108,6 @@ install.packages(
 
 ### Build from source
 
-For source installation, pre-built Rust libraries may be available if
-the environment variable `NOT_CRAN` is set to `"true"`. (Or, set
-`LIBR_POLARS_BUILD` to `"false"`)
-
-``` r
-Sys.setenv(NOT_CRAN = "true")
-install.packages("polars", repos = "https://rpolars.r-universe.dev")
-```
-
 Otherwise, the Rust library will be built from source. the Rust
 toolchain (Rust 1.73 or later) must be configured.
 

src/rust/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "r-polars"
-version = "0.34.0"
+version = "0.34.1"
 edition = "2021"
 rust-version = "1.73"
 publish = false

src/rust/src/utils/mod.rs

@@ -588,10 +588,11 @@ pub fn robj_to_quote_style(robj: Robj) -> RResult<pl::QuoteStyle> {
         "always" => Ok(pl::QuoteStyle::Always),
         "necessary" => Ok(pl::QuoteStyle::Necessary),
         "non_numeric" => Ok(pl::QuoteStyle::NonNumeric),
-        // "never" is available in rust-polars devel only for now (will be added in 0.34)
-        // "never" => Ok(QuoteStyle::Never),
+        "never" => Ok(pl::QuoteStyle::Never),
         _ => rerr()
-            .plain("a `quote_style` must be 'always', 'necessary' or 'non_numeric'.")
+            .plain(
+                "`quote_style` should be one of 'always', 'necessary', 'non_numeric', or 'never'.",
+            )
             .bad_robj(&robj),
     }
 }