mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-29 16:25:49 +08:00
346 lines
11 KiB
Go
346 lines
11 KiB
Go
// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package ofdgo
|
|
|
|
import (
|
|
"context"
|
|
"encoding/xml"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// Annotations 注释集合
|
|
type Annotations struct {
|
|
XMLName xml.Name `xml:"Annotations"`
|
|
Page []AnnPage `xml:"Page"`
|
|
}
|
|
|
|
// AnnPage 页面注释引用
|
|
type AnnPage struct {
|
|
PageID string `xml:"PageID,attr"`
|
|
FileLoc string `xml:"FileLoc"`
|
|
}
|
|
|
|
// PageAnnot 页面注释集合
|
|
type PageAnnot struct {
|
|
XMLName xml.Name `xml:"PageAnnot"`
|
|
Annot []Annotation `xml:"Annot"`
|
|
}
|
|
|
|
// Annotation 页面注释
|
|
type Annotation struct {
|
|
ID string `xml:"ID,attr"`
|
|
Type string `xml:"Type,attr"`
|
|
Subtype string `xml:"Subtype,attr"`
|
|
Creator string `xml:"Creator,attr"`
|
|
LastModDate string `xml:"LastModDate,attr"`
|
|
Visible *bool `xml:"Visible,attr"`
|
|
NoZoom bool `xml:"NoZoom,attr"`
|
|
NoRotate bool `xml:"NoRotate,attr"`
|
|
Remark string `xml:"Remark"`
|
|
Parameters *AnnotationParameters `xml:"Parameters,omitempty"`
|
|
Appearance Appearance
|
|
}
|
|
|
|
// AnnotationParameters 保存注释参数集合
|
|
type AnnotationParameters struct {
|
|
Parameter []AnnotationParameter `xml:"Parameter"`
|
|
}
|
|
|
|
// AnnotationParameter 保存标准注释参数的名称和值
|
|
type AnnotationParameter struct {
|
|
Name string `xml:"Name,attr"`
|
|
Value string `xml:",chardata"`
|
|
}
|
|
|
|
// AnnotationInfo 注释信息，Page从1开始，位置和尺寸使用页面毫米坐标
|
|
type AnnotationInfo struct {
|
|
ID string `json:"id"`
|
|
Page int `json:"page"`
|
|
PageID string `json:"pageId"`
|
|
Type string `json:"type"`
|
|
Subtype string `json:"subtype,omitempty"`
|
|
Creator string `json:"creator,omitempty"`
|
|
LastModDate string `json:"lastModDate,omitempty"`
|
|
Remark string `json:"remark,omitempty"`
|
|
Visible bool `json:"visible"`
|
|
NoZoom bool `json:"noZoom,omitempty"`
|
|
NoRotate bool `json:"noRotate,omitempty"`
|
|
X float64 `json:"x"`
|
|
Y float64 `json:"y"`
|
|
Width float64 `json:"width"`
|
|
Height float64 `json:"height"`
|
|
}
|
|
|
|
// Appearance 注释外观
|
|
type Appearance struct {
|
|
Boundary string `xml:"Boundary,attr"`
|
|
Objects []GraphicObject `xml:"-"`
|
|
TextObject []TextObject `xml:"TextObject"`
|
|
PathObject []PathObject `xml:"PathObject"`
|
|
ImageObject []ImageObject `xml:"ImageObject"`
|
|
CompositeGraphicUnit []CompositeGraphicUnit `xml:"CompositeGraphicUnit"`
|
|
}
|
|
|
|
// UnmarshalXML 解析注释入口，按命名空间读取直接页面引用
|
|
// 入参: d XML解码器, start 起始节点
|
|
// 返回: error 解析错误
|
|
func (a *Annotations) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
|
|
if start.Name.Local != "Annotations" {
|
|
return fmt.Errorf("expected Annotations root, got %s", start.Name.Local)
|
|
}
|
|
*a = Annotations{XMLName: start.Name}
|
|
return decodeOFDCollection(d, start, "Page", &a.Page)
|
|
}
|
|
|
|
// UnmarshalXML 读取注释所属页面及文件路径，忽略扩展中的同名字段
|
|
// 入参: d XML解码器, start 起始节点
|
|
// 返回: error 解析错误
|
|
func (page *AnnPage) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
|
|
*page = AnnPage{PageID: attrValue(start, "PageID")}
|
|
return decodeOFDChildren(d, start, func(d *xml.Decoder, node xml.StartElement) error {
|
|
if node.Name.Local == "FileLoc" {
|
|
return d.DecodeElement(&page.FileLoc, &node)
|
|
}
|
|
return d.Skip()
|
|
})
|
|
}
|
|
|
|
// UnmarshalXML 解析分页注释文件，不将外部同名节点作为注释
|
|
// 入参: d XML解码器, start 起始节点
|
|
// 返回: error 解析错误
|
|
func (page *PageAnnot) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
|
|
if start.Name.Local != "PageAnnot" {
|
|
return fmt.Errorf("expected PageAnnot root, got %s", start.Name.Local)
|
|
}
|
|
*page = PageAnnot{XMLName: start.Name}
|
|
return decodeOFDCollection(d, start, "Annot", &page.Annot)
|
|
}
|
|
|
|
// UnmarshalXML 解析注释属性、说明、参数和外观，保留未指定可见性的默认语义
|
|
// 入参: d XML解码器, start 起始节点
|
|
// 返回: error 解析错误
|
|
func (a *Annotation) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
|
|
*a = Annotation{
|
|
ID: attrValue(start, "ID"), Type: attrValue(start, "Type"), Subtype: attrValue(start, "Subtype"),
|
|
Creator: attrValue(start, "Creator"), LastModDate: attrValue(start, "LastModDate"),
|
|
}
|
|
for _, attr := range start.Attr {
|
|
if attr.Name.Space != "" {
|
|
continue
|
|
}
|
|
var target *bool
|
|
switch attr.Name.Local {
|
|
case "Visible":
|
|
a.Visible = new(bool)
|
|
target = a.Visible
|
|
case "NoZoom":
|
|
target = &a.NoZoom
|
|
case "NoRotate":
|
|
target = &a.NoRotate
|
|
default:
|
|
continue
|
|
}
|
|
value, err := strconv.ParseBool(strings.TrimSpace(attr.Value))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
*target = value
|
|
}
|
|
return decodeOFDChildren(d, start, func(d *xml.Decoder, node xml.StartElement) error {
|
|
switch node.Name.Local {
|
|
case "Remark":
|
|
return d.DecodeElement(&a.Remark, &node)
|
|
case "Parameters":
|
|
return d.DecodeElement(&a.Parameters, &node)
|
|
case "Appearance":
|
|
return d.DecodeElement(&a.Appearance, &node)
|
|
}
|
|
return d.Skip()
|
|
})
|
|
}
|
|
|
|
// UnmarshalXML 读取标准注释参数，保留参数顺序和重复名称
|
|
// 入参: d XML解码器, start 起始节点
|
|
// 返回: error 解析错误
|
|
func (p *AnnotationParameters) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
|
|
*p = AnnotationParameters{}
|
|
return decodeOFDCollection(d, start, "Parameter", &p.Parameter)
|
|
}
|
|
|
|
// UnmarshalXML 读取参数名称与文本，不采用带命名空间的名称属性
|
|
// 入参: d XML解码器, start 起始节点
|
|
// 返回: error 解析错误
|
|
func (p *AnnotationParameter) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
|
|
type plain AnnotationParameter
|
|
var value plain
|
|
start = ofdXMLStart(start)
|
|
if err := d.DecodeElement(&value, &start); err != nil {
|
|
return err
|
|
}
|
|
*p = AnnotationParameter(value)
|
|
return nil
|
|
}
|
|
|
|
// AnnotationInfos 按页面顺序获取注释信息，包含不可见注释
|
|
// 返回: []AnnotationInfo 注释信息, error 错误信息
|
|
func (r *Reader) AnnotationInfos() ([]AnnotationInfo, error) {
|
|
doc, err := r.Doc()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var infos []AnnotationInfo
|
|
for index, page := range doc.Pages.Page {
|
|
infos = append(infos, r.annotationInfos(index, page.ID)...)
|
|
}
|
|
return infos, nil
|
|
}
|
|
|
|
// AnnotationInfosByIndex 获取指定页面的注释信息，包含不可见注释，不解析页面图元
|
|
// 入参: index 页面索引，从0开始
|
|
// 返回: []AnnotationInfo 注释信息, error 错误信息
|
|
func (r *Reader) AnnotationInfosByIndex(index int) ([]AnnotationInfo, error) {
|
|
doc, err := r.Doc()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if index < 0 || index >= len(doc.Pages.Page) {
|
|
return nil, fmt.Errorf("page index out of range: %d", index)
|
|
}
|
|
return r.annotationInfos(index, doc.Pages.Page[index].ID), nil
|
|
}
|
|
|
|
// annotationInfos 提取指定页面的注释信息
|
|
// 入参: index 页面索引, pageID 页面标识
|
|
// 返回: []AnnotationInfo 注释信息
|
|
func (r *Reader) annotationInfos(index int, pageID string) []AnnotationInfo {
|
|
var infos []AnnotationInfo
|
|
for _, annotation := range r.Annots[pageID] {
|
|
box, _ := ParseBox(annotation.Appearance.Boundary)
|
|
infos = append(infos, AnnotationInfo{
|
|
ID: annotation.ID,
|
|
Page: index + 1,
|
|
PageID: pageID,
|
|
Type: annotation.Type,
|
|
Subtype: annotation.Subtype,
|
|
Creator: annotation.Creator,
|
|
LastModDate: annotation.LastModDate,
|
|
Remark: annotation.Remark,
|
|
Visible: annotation.Visible == nil || *annotation.Visible,
|
|
NoZoom: annotation.NoZoom,
|
|
NoRotate: annotation.NoRotate,
|
|
X: box.X,
|
|
Y: box.Y,
|
|
Width: box.W,
|
|
Height: box.H,
|
|
})
|
|
}
|
|
return infos
|
|
}
|
|
|
|
// parseAnnotations 解析注释文件
|
|
// 入参: ctx 取消上下文, doc 文档结构
|
|
// 返回: error 错误信息
|
|
func (r *Reader) parseAnnotations(ctx context.Context, doc *Document) error {
|
|
if doc.Annotations == "" {
|
|
return nil
|
|
}
|
|
annotations, err := r.annotationIndexContext(ctx, doc)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if r.Annots == nil {
|
|
r.Annots = make(map[string][]Annotation)
|
|
}
|
|
annPath := r.ResPath(doc.Annotations)
|
|
for _, page := range annotations.Page {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
annotPath := resolveResourcePath(annPath, "", page.FileLoc)
|
|
af, err := r.openFile(annotPath)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
var pageAnnot PageAnnot
|
|
err = xml.NewDecoder(imageInput{ReadCloser: af, ctx: ctx}).Decode(&pageAnnot)
|
|
_ = af.Close()
|
|
if err != nil {
|
|
continue
|
|
}
|
|
r.Annots[page.PageID] = append(r.Annots[page.PageID], pageAnnot.Annot...)
|
|
}
|
|
return ctx.Err()
|
|
}
|
|
|
|
// annotationIndex 读取注解索引，将页引用对应到文档声明的标识，不解析页面外观
|
|
// 入参: doc 文档结构
|
|
// 返回: Annotations 注解索引, error 错误信息
|
|
func (r *Reader) annotationIndex(doc *Document) (Annotations, error) {
|
|
return r.annotationIndexContext(context.Background(), doc)
|
|
}
|
|
|
|
// annotationIndexContext 读取注解索引并规范页引用，取消时不提交文件索引
|
|
// 入参: ctx 取消上下文, doc 文档结构
|
|
// 返回: Annotations 注解索引, error 读取或取消错误
|
|
func (r *Reader) annotationIndexContext(ctx context.Context, doc *Document) (Annotations, error) {
|
|
if err := ctx.Err(); err != nil {
|
|
return Annotations{}, err
|
|
}
|
|
if doc.Annotations == "" {
|
|
return Annotations{}, nil
|
|
}
|
|
annPath := r.ResPath(doc.Annotations)
|
|
f, err := r.openFile(annPath)
|
|
if err != nil {
|
|
return Annotations{}, err
|
|
}
|
|
defer f.Close()
|
|
var annotations Annotations
|
|
if err := xml.NewDecoder(imageInput{ReadCloser: f, ctx: ctx}).Decode(&annotations); err != nil {
|
|
return Annotations{}, err
|
|
}
|
|
pageIDs := make(map[string]string, len(doc.Pages.Page))
|
|
for _, page := range doc.Pages.Page {
|
|
if err := ctx.Err(); err != nil {
|
|
return Annotations{}, err
|
|
}
|
|
if id := editorResourceID(page.ID); id != "" {
|
|
pageIDs[id] = page.ID
|
|
}
|
|
}
|
|
files := make(map[string][]string)
|
|
for i := range annotations.Page {
|
|
if err := ctx.Err(); err != nil {
|
|
return Annotations{}, err
|
|
}
|
|
page := &annotations.Page[i]
|
|
if id := pageIDs[editorResourceID(page.PageID)]; id != "" {
|
|
page.PageID = id
|
|
}
|
|
annotPath := resolveResourcePath(annPath, "", page.FileLoc)
|
|
if file, ok := r.packageFile(annotPath); ok {
|
|
annotPath = cleanPackagePath(file.Name)
|
|
}
|
|
files[annotPath] = append(files[annotPath], page.PageID)
|
|
}
|
|
if err := ctx.Err(); err != nil {
|
|
return Annotations{}, err
|
|
}
|
|
r.annotationFiles = files
|
|
return annotations, nil
|
|
}
|