options: add builder option

src/lib.rs

@@ -33,7 +33,7 @@ pub use crate::reader::Reader;
 pub use crate::error::{KbinError, KbinErrorKind, Result};
 pub use crate::node::{Node, NodeCollection};
 pub use crate::node_types::StandardType;
-pub use crate::options::Options;
+pub use crate::options::{Options, OptionsBuilder};
 pub use crate::to_text_xml::ToTextXml;
 pub use crate::value::{Value, ValueArray};
 pub use crate::writer::{Writer, Writeable};

src/options.rs

@@ -7,6 +7,12 @@ pub struct Options {
   pub(crate) encoding: EncodingType,
 }
 
+#[derive(Default)]
+pub struct OptionsBuilder {
+  compression: Compression,
+  encoding: EncodingType,
+}
+
 impl Options {
   pub fn new(
     compression: Compression,
@@ -18,6 +24,10 @@ impl Options {
     }
   }
 
+  pub fn builder() -> OptionsBuilder {
+    OptionsBuilder::default()
+  }
+
   pub fn with_encoding(encoding: EncodingType) -> Self {
     Self {
       encoding,
@@ -25,3 +35,22 @@ impl Options {
     }
   }
 }
+
+impl OptionsBuilder {
+  pub fn compression(&mut self, compression: Compression) -> &mut Self {
+    self.compression = compression;
+    self
+  }
+
+  pub fn encoding(&mut self, encoding: EncodingType) -> &mut Self {
+    self.encoding = encoding;
+    self
+  }
+
+  pub fn build(self) -> Options {
+    Options {
+      compression: self.compression,
+      encoding: self.encoding,
+    }
+  }
+}