feat: 增加page margin和number (#48)

structnum.go

@@ -0,0 +1,76 @@
+/*
+   Copyright (c) 2024 l0g1n
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published
+   by the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+package docx
+
+import (
+	"encoding/xml"
+	"io"
+)
+
+// NumProperties show the number properties
+type NumProperties struct {
+	XMLName xml.Name `xml:"w:numPr,omitempty"`
+	NumID   *NumID
+	Ilvl    *Ilevel
+}
+
+// NumID show the number id
+type NumID struct {
+	XMLName xml.Name `xml:"w:numId,omitempty"`
+	Val     string   `xml:"w:val,attr"`
+}
+
+// Ilevel show the level
+type Ilevel struct {
+	XMLName xml.Name `xml:"w:ilvl,omitempty"`
+	Val     string   `xml:"w:val,attr"`
+}
+
+// UnmarshalXML ...
+func (n *NumProperties) UnmarshalXML(d *xml.Decoder, _ xml.StartElement) error {
+	for {
+		t, err := d.Token()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+
+		if tt, ok := t.(xml.StartElement); ok {
+			switch tt.Name.Local {
+			case "numId":
+				var value NumID
+				value.Val = getAtt(tt.Attr, "val")
+				n.NumID = &value
+			case "ilvl":
+				var value Ilevel
+				value.Val = getAtt(tt.Attr, "val")
+				n.Ilvl = &value
+			default:
+				err = d.Skip() // skip unsupported tags
+				if err != nil {
+					return err
+				}
+				continue
+			}
+		}
+	}
+
+	return nil
+}