🎉 Initial commit

workbook/relationships.go

@@ -0,0 +1,71 @@
+package workbook
+
+// Relationships 表示Excel文档中的关系集合
+type Relationships struct {
+	Relationships []*Relationship
+}
+
+// Relationship 表示Excel文档中的关系
+type Relationship struct {
+	ID         string
+	Type       string
+	Target     string
+	TargetMode string // 目标模式：Internal, External
+}
+
+// NewRelationships 创建一个新的关系集合
+func NewRelationships() *Relationships {
+	return &Relationships{
+		Relationships: make([]*Relationship, 0),
+	}
+}
+
+// AddRelationship 添加一个关系
+func (r *Relationships) AddRelationship(id, relType, target string) *Relationship {
+	rel := &Relationship{
+		ID:     id,
+		Type:   relType,
+		Target: target,
+	}
+	r.Relationships = append(r.Relationships, rel)
+	return rel
+}
+
+// AddExternalRelationship 添加一个外部关系
+func (r *Relationships) AddExternalRelationship(id, relType, target string) *Relationship {
+	rel := &Relationship{
+		ID:         id,
+		Type:       relType,
+		Target:     target,
+		TargetMode: "External",
+	}
+	r.Relationships = append(r.Relationships, rel)
+	return rel
+}
+
+// GetRelationshipByID 根据ID获取关系
+func (r *Relationships) GetRelationshipByID(id string) *Relationship {
+	for _, rel := range r.Relationships {
+		if rel.ID == id {
+			return rel
+		}
+	}
+	return nil
+}
+
+// ToXML 将关系转换为XML
+func (r *Relationships) ToXML() string {
+	xml := "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"
+	xml += "<Relationships xmlns=\"http://schemas.openxmlformats.org/package/2006/relationships\">\n"
+
+	for _, rel := range r.Relationships {
+		if rel.TargetMode == "External" {
+			xml += "  <Relationship Id=\"" + rel.ID + "\" Type=\"" + rel.Type + "\" Target=\"" + rel.Target + "\" TargetMode=\"External\"/>\n"
+		} else {
+			xml += "  <Relationship Id=\"" + rel.ID + "\" Type=\"" + rel.Type + "\" Target=\"" + rel.Target + "\"/>\n"
+		}
+	}
+
+	xml += "</Relationships>"
+	return xml
+}