UPDATE: Dump of initial files

xlsx/src/export/workbook_xml_rels.rs

@@ -0,0 +1,25 @@
+use ironcalc_base::types::Workbook;
+
+use super::xml_constants::{XML_DECLARATION, XML_WORKSHEET};
+
+pub(crate) fn get_workbook_xml_rels(workbook: &Workbook) -> String {
+    let mut relationships_str: Vec<String> = vec![];
+    let worksheet_count = workbook.worksheets.len() + 1;
+    for id in 1..worksheet_count {
+        relationships_str.push(format!(
+            "<Relationship Id=\"rId{id}\" Type=\"{XML_WORKSHEET}\" Target=\"worksheets/sheet{id}.xml\"/>"
+        ));
+    }
+    let mut id = worksheet_count;
+    relationships_str.push(
+        format!("<Relationship Id=\"rId{id}\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles\" Target=\"styles.xml\"/>")
+    );
+    id += 1;
+    relationships_str.push(
+        format!("<Relationship Id=\"rId{id}\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings\" Target=\"sharedStrings.xml\"/>")
+    );
+    format!(
+        "{XML_DECLARATION}\n<Relationships xmlns=\"http://schemas.openxmlformats.org/package/2006/relationships\">{}</Relationships>",
+        relationships_str.join("")
+    )
+}