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use crate::xmlwriter::XMLWriter;
pub struct Relationship {
pub(crate) writer: XMLWriter,
relationships: Vec<(String, String, String)>,
id_num: u16,
}
impl Relationship {
pub(crate) fn new() -> Relationship {
let writer = XMLWriter::new();
Relationship {
writer,
relationships: vec![],
id_num: 1,
}
}
pub(crate) fn add_document_relationship(
&mut self,
rel_type: &str,
target: &str,
target_mode: &str,
) {
let document_schema = "http://schemas.openxmlformats.org/officeDocument/2006/relationships";
self.relationships.push((
format!("{document_schema}/{rel_type}"),
target.to_string(),
target_mode.to_string(),
));
}
pub(crate) fn add_package_relationship(&mut self, rel_type: &str, target: &str) {
let package_schema = "http://schemas.openxmlformats.org/package/2006/relationships";
self.relationships.push((
format!("{package_schema}/{rel_type}"),
target.to_string(),
"".to_string(),
));
}
pub(crate) fn assemble_xml_file(&mut self) {
self.writer.xml_declaration();
self.write_relationships();
self.writer.xml_end_tag("Relationships");
}
fn write_relationships(&mut self) {
let xmlns = "http://schemas.openxmlformats.org/package/2006/relationships".to_string();
let attributes = vec![("xmlns", xmlns)];
self.writer.xml_start_tag_attr("Relationships", &attributes);
for relationship in self.relationships.clone() {
self.write_relationship(relationship);
}
}
fn write_relationship(&mut self, relationship: (String, String, String)) {
let r_id = format!("rId{}", self.id_num);
let (rel_type, target, target_mode) = relationship;
self.id_num += 1;
let mut attributes = vec![("Id", r_id), ("Type", rel_type), ("Target", target)];
if !target_mode.is_empty() {
attributes.push(("TargetMode", target_mode));
}
self.writer.xml_empty_tag_attr("Relationship", &attributes);
}
}
#[cfg(test)]
mod tests {
use super::Relationship;
use crate::test_functions::xml_to_vec;
use pretty_assertions::assert_eq;
#[test]
fn test_assemble() {
let mut rels = Relationship::new();
rels.add_document_relationship("worksheet", "worksheets/sheet1.xml", "");
rels.add_document_relationship("theme", "theme/theme1.xml", "");
rels.add_document_relationship("styles", "styles.xml", "");
rels.add_document_relationship("sharedStrings", "sharedStrings.xml", "");
rels.add_document_relationship("calcChain", "calcChain.xml", "");
rels.assemble_xml_file();
let got = rels.writer.read_to_str();
let got = xml_to_vec(&got);
let expected = xml_to_vec(
r#"
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet1.xml"/>
<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme" Target="theme/theme1.xml"/>
<Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/>
<Relationship Id="rId4" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings" Target="sharedStrings.xml"/>
<Relationship Id="rId5" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/calcChain" Target="calcChain.xml"/>
</Relationships>
"#,
);
assert_eq!(got, expected);
}
}