mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-29 17:27:08 +08:00
106 lines
3.2 KiB
Go
106 lines
3.2 KiB
Go
// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ofdgo
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import (
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"bytes"
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"encoding/xml"
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"fmt"
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"path"
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"strings"
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)
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// AddAttachment 添加文档附件，保留原始数据，一次操作计入一条撤销记录
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// 入参: name 显示文件名, data 文件数据
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// 返回: string 附件标识, error 文件名或文档结构错误
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func (e *Editor) AddAttachment(name string, data []byte) (string, error) {
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if strings.TrimSpace(name) == "" {
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return "", fmt.Errorf("attachment name is required")
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}
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if err := e.prepareSourceIDs(); err != nil {
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return "", err
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}
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base := e.source
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var err error
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if base == nil {
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base, err = e.importBase()
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if err != nil {
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return "", err
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}
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}
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id := e.nextID()
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file := e.packageName("Attachments/Attachment_" + id)
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attrs := ofdAttrs{}
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attrs.add("ID", id)
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attrs.add("Name", name)
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attrs.add("Format", strings.TrimPrefix(path.Ext(name), "."))
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attrs.add("Size", ofdNumber(float64(len(data))/1024))
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attrs.add("Visible", "true")
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entry, err := editorXMLContainer("Attachment", attrs, editorXMLText("FileLoc", "/"+file))
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if err != nil {
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return "", err
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}
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entry = bytes.TrimPrefix(entry, []byte(xml.Header))
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docName := cleanPackagePath(base.reader.OFD.DocBody[0].DocRoot)
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docData, err := base.reader.readFile(docName)
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if err != nil {
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return "", err
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}
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doc, err := parseEditorXML(docData)
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if err != nil {
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return "", err
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}
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node := doc.child("Attachments")
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parts := map[string][]byte{file: bytes.Clone(data)}
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if base.document.Attachments.Path != "" {
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name := base.reader.ResPath(base.document.Attachments.Path)
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existing, err := base.reader.readFile(name)
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if err != nil {
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return "", err
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}
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root, err := parseEditorXML(existing)
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if err != nil {
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return "", err
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}
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if root.open == root.end {
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parts[name] = editorPatchXML(existing, []editorXMLPatch{editorXMLContent(existing, root, entry)})
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} else {
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parts[name] = editorPatchXML(existing, []editorXMLPatch{{root.close, root.close, entry}})
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}
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} else if node != nil {
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if node.open == node.end {
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parts[docName] = editorPatchXML(docData, []editorXMLPatch{editorXMLContent(docData, node, entry)})
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} else {
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parts[docName] = editorPatchXML(docData, []editorXMLPatch{{node.close, node.close, entry}})
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}
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} else {
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container, err := editorXMLContainer("Attachments", nil, entry)
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if err != nil {
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return "", err
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}
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name := e.packageName("Attachments.xml")
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parts[name] = container
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position := doc.close
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if next := doc.child("Extensions"); next != nil {
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position = next.start
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}
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parts[docName] = editorPatchXML(docData, []editorXMLPatch{{position, position, editorXMLText("Attachments", "/"+name)}})
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}
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if err := e.commitAnnotationParts(base, parts); err != nil {
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return "", err
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}
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return id, nil
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}
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