UPDATE: Adds python bindings (#90)

* UPDATE: Adds python bindings

Exclude pyroncalc and wasm from test coverage

xlsx/src/bin/xlsx_2_icalc.rs

@@ -22,5 +22,5 @@ fn main() {
     let base_name = file_path.file_stem().unwrap().to_str().unwrap();
     let output_file_name = &format!("{base_name}.ic");
     let model = load_from_xlsx(file_name, "en", "UTC").unwrap();
-    save_to_icalc(model.workbook, output_file_name);
+    save_to_icalc(&model, output_file_name).unwrap();
 }

xlsx/src/export/mod.rs

@@ -107,7 +107,7 @@ pub fn save_xlsx_to_writer<W: Write + Seek>(model: &Model, writer: W) -> Result<
     zip.add_directory("xl/worksheets", options)?;
     for (sheet_index, worksheet) in workbook.worksheets.iter().enumerate() {
         let id = sheet_index + 1;
-        zip.start_file(&format!("xl/worksheets/sheet{id}.xml"), options)?;
+        zip.start_file(format!("xl/worksheets/sheet{id}.xml"), options)?;
         let dimension = model
             .workbook
             .worksheet(sheet_index as u32)
@@ -134,10 +134,15 @@ pub fn save_xlsx_to_writer<W: Write + Seek>(model: &Model, writer: W) -> Result<
     Ok(writer)
 }
 
-/// Exports an internal representation of a workbook into an equivalent IronCalc json format
-pub fn save_to_icalc(workbook: Workbook, output: &str) {
-    let s = bitcode::encode(&workbook);
-    let file_path = std::path::Path::new(output);
-    let mut file = fs::File::create(file_path).unwrap();
-    file.write_all(&s).unwrap();
+/// Exports a model to an icalc file
+pub fn save_to_icalc(model: &Model, file_name: &str) -> Result<(), XlsxError> {
+    let file_path = std::path::Path::new(&file_name);
+    if file_path.exists() {
+        return Err(XlsxError::IO(format!("file {} already exists", file_name)));
+    }
+    let s = bitcode::encode(&model.workbook);
+    let mut file = fs::File::create(file_path)?;
+    file.write_all(&s)?;
+
+    Ok(())
 }

xlsx/src/export/test/test_export.rs

@@ -64,7 +64,7 @@ fn test_values() {
     }
     {
         let temp_file_name = "temp_file_test_values.ic";
-        save_to_icalc(model.workbook, temp_file_name);
+        save_to_icalc(&model, temp_file_name).unwrap();
 
         let model = load_from_icalc(temp_file_name).unwrap();
         assert_eq!(model.get_formatted_cell_value(0, 1, 1).unwrap(), "123.456");