Replace CR/CRLF line endings by LF in vendored makefiles

In an attempt to fix R CMD CHECK workflow in CI and notably
https://github.com/riatelab/distanamo/actions/runs/12913965346/job/36012421388#step:6:132

Author: mthh

dev/vendoring.R

@@ -1,8 +1,10 @@
 #' The code of this function was copied/pasted from
 #' https://github.com/PRQL/prqlc-r/blob/main/dev/vendoring.R
 #' (licensed under MIT - (c) prqlr authors)
-#' with minor modification to remove the vendor folder
-#' after the vendor.tar.xz has been created
+#' with minor modification to :
+#' - remove the vendor folder after the vendor.tar.xz has been created
+#' - replace cr/crlf line end by lf in savvy-bindgen/src/gen/templates/Makevars.in
+#'   (and any other file if necessary)
 vendor_crates <- function(path = ".") {
   src_dir <- rprojroot::find_package_root_file("src", path = path)
 
@@ -23,11 +25,18 @@ vendor_crates <- function(path = ".") {
     )
   )$stdout
 
+  config_toml_content <- stringr::str_replace_all(config_toml_content, "rust/vendor", "vendor")
+
   brio::write_lines(
     text = config_toml_content,
     path = config_toml_file
   )
 
+  # We need to replace CR/CRLF line endings by LF in
+  # src/rust/vendor/savvy-bindgen/src/gen/templates/Makevars.in in an attempt to fix
+  # https://github.com/riatelab/distanamo/actions/runs/12913965346/job/36012421388#step:6:132
+  find_and_replace_crlf(file.path(src_dir, "rust", "vendor"))
+
   withr::local_dir(file.path(src_dir, vendor_rel_path))
   withr::local_envvar(c(XZ_OPT = "-9"))
   processx::run(
@@ -48,4 +57,24 @@ vendor_crates <- function(path = ".") {
   unlink(file.path(src_dir, "rust", "vendor"), recursive = TRUE)
 }
 
+replace_crcrlf <- function(file_path) {
+  content <- readLines(file_path, warn = FALSE)
+  content <- stringr::str_replace_all(content, "\r\n|\r", "\n")
+  writeLines(content, file_path, sep = "\n")
+}
+
+find_and_replace_crlf <- function(directory_path) {
+  files_and_dirs <- list.files(directory_path, full.names = TRUE)
+
+  for (item in files_and_dirs) {
+    if (file.info(item)$isdir) {
+      find_and_replace_crlf(item)
+    } else {
+      if (startsWith(basename(item), "Makevars")) {
+        replace_crcrlf(item)
+      }
+    }
+  }
+}
+
 vendor_crates()

src/Makevars.in

@@ -22,7 +22,8 @@ $(STATLIB):
 	# therefore is only used if cargo is absent from the user's PATH.
 
 	# Use vendored crates
-	$(TAR) --extract --xz -f ./rust/vendor.tar.xz -C ./rust && \
+	mkdir -p ./rust/vendor && \
+	    $(TAR) --extract --xz -f ./rust/vendor.tar.xz -C ./rust/vendor && \
 	    mkdir -p ./rust/.cargo && \
 	    cp ./rust/vendor-config.toml ./rust/.cargo/config.toml
 
@@ -38,6 +39,8 @@ $(STATLIB):
 	    cargo +nightly build $(CARGO_BUILD_ARGS) --target $(TARGET) -Zbuild-std=panic_abort,std; \
 	  fi
 
+	  rm -Rf ./rust/vendor
+
 C_clean:
 	rm -Rf $(SHLIB) $(STATLIB) $(OBJECTS) ./rust/.cargo
 

src/Makevars.win.in

@@ -28,7 +28,8 @@ $(STATLIB):
 
 
 	# Use vendored crates
-	$(TAR) --extract --xz -f ./rust/vendor.tar.xz -C ./rust && \
+	mkdir -p ./rust/vendor && \
+	    $(TAR) --extract --xz -f ./rust/vendor.tar.xz -C ./rust/vendor && \
 	    mkdir -p ./rust/.cargo && \
 	    cp ./rust/vendor-config.toml ./rust/.cargo/config.toml
 
@@ -39,6 +40,8 @@ $(STATLIB):
 	  export RUSTFLAGS="$(RUSTFLAGS)" && \
 	  cargo build --target $(TARGET) --lib --profile $(PROFILE) --manifest-path ./rust/Cargo.toml --target-dir $(TARGET_DIR)
 
+	  rm -Rf ./rust/vendor
+
 C_clean:
 	rm -Rf $(SHLIB) $(STATLIB) $(OBJECTS) ./rust/.cargo
 

src/rust/vendor-config.toml

@@ -6,5 +6,5 @@ git = "https://github.com/mthh/distance-cartogram-rs"
 replace-with = "vendored-sources"
 
 [source.vendored-sources]
-directory = "rust/vendor"
+directory = "vendor"