fix: unmarshal RunProperties

structpara.go

@@ -0,0 +1,88 @@
+package docxlib
+
+import (
+	"encoding/xml"
+	"io"
+)
+
+type ParagraphChild struct {
+	Link       *Hyperlink     `xml:"http://schemas.openxmlformats.org/wordprocessingml/2006/main hyperlink,omitempty"`
+	Run        *Run           `xml:"http://schemas.openxmlformats.org/wordprocessingml/2006/main r,omitempty"`
+	Properties *RunProperties `xml:"http://schemas.openxmlformats.org/wordprocessingml/2006/main rPr,omitempty"`
+}
+
+type Paragraph struct {
+	XMLName  xml.Name         `xml:"http://schemas.openxmlformats.org/wordprocessingml/2006/main p"`
+	Children []ParagraphChild // Children will generate an unnecessary tag <Children> ... </Children> and we skip it by a self-defined xml.Marshaler
+
+	file *Docx
+}
+
+func (p *Paragraph) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
+	err := e.EncodeToken(start)
+	if err != nil {
+		return err
+	}
+	for _, c := range p.Children {
+		switch {
+		case c.Link != nil:
+			err = e.Encode(c.Link)
+		case c.Run != nil:
+			err = e.Encode(c.Run)
+		case c.Properties != nil:
+			err = e.Encode(c.Properties)
+		default:
+			continue
+		}
+		if err != nil {
+			return err
+		}
+	}
+	return e.EncodeToken(start.End())
+}
+
+func (p *Paragraph) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	children := make([]ParagraphChild, 0, 64)
+	for {
+		t, err := d.Token()
+		if err == io.EOF {
+			break
+		}
+		switch tt := t.(type) {
+		case xml.StartElement:
+			var elem ParagraphChild
+			switch tt.Name.Local {
+			case "hyperlink":
+				var value Hyperlink
+				d.DecodeElement(&value, &start)
+				id := getAtt(tt.Attr, "id")
+				anchor := getAtt(tt.Attr, "anchor")
+				if id != "" {
+					value.ID = id
+				}
+				if anchor != "" {
+					value.ID = anchor
+				}
+				elem.Link = &value
+			case "r":
+				var value Run
+				d.DecodeElement(&value, &start)
+				elem.Run = &value
+				if value.InstrText == "" && value.Text == nil && value.Drawing == nil {
+					continue
+				}
+			case "rPr":
+				var value RunProperties
+				d.DecodeElement(&value, &start)
+				elem.Properties = &value
+			default:
+				continue
+			}
+			children = append(children, elem)
+		}
+
+	}
+	p.Children = children
+	return nil
+
+}