mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-30 01:27:26 +08:00
597 lines
18 KiB
Go
597 lines
18 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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"context"
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"encoding/xml"
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"fmt"
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"maps"
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"path"
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"slices"
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"strings"
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)
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// pruneStructureReferences 迁移公文图元编号并清理已删除的引用，保留未知标引和原有悬空引用
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// 改动进入输出快照，由既有文档及版本隔离流程维护共享文件
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// 入参: ctx 取消上下文, parts 输出覆盖条目, generated 本次编码结果及扫描记录
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// 返回: error 读取、解析或取消错误
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func (e *Editor) pruneStructureReferences(ctx context.Context, parts map[string][]byte, generated map[string]editorGeneratedReferences) error {
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if err := ctx.Err(); err != nil {
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return err
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}
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if e.source.document.CustomTags.Path == "" && len(e.source.document.CustomTags.CustomTag) == 0 {
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return nil
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}
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tags, err := e.source.reader.CustomTagsContext(ctx)
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if err != nil {
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return err
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}
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knownTags, err := e.source.reader.structureReferenceTags(ctx, tags)
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if err != nil {
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return err
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}
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if !slices.Contains(knownTags, true) {
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return nil
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}
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pages := make(map[string]bool, len(e.pages))
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for _, page := range e.pages {
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pages[editorResourceID(page.ID)] = true
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}
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removedPages := make(map[string]bool)
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removedObjects := make(map[string]map[string]bool)
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pageRemaps := make(map[string]map[string][]string)
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remainingObjects := make(map[string]map[string]bool)
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var snapshot *Reader
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var snapshotPages map[string]Page
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sources := make(map[string]*editorSourcePage, len(e.source.pages)+len(e.source.structureObjects))
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for id, source := range e.source.pages {
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sources[editorResourceID(id)] = source
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}
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for id := range e.source.structureObjects {
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if _, ok := sources[id]; !ok {
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sources[id] = nil
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}
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}
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for key, source := range sources {
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if !pages[key] {
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removedPages[key] = true
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continue
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}
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known := e.source.structureObjects[key]
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changed := false
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if source != nil {
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_, changed = parts[e.source.reader.ResPath(source.ref.BaseLoc)]
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changed = changed && source.original != nil
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}
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if !changed && len(known) == 0 {
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continue
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}
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if snapshot == nil {
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reader := e.source.reader
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files := make(map[string][]byte, len(reader.files)+len(parts))
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maps.Copy(files, reader.files)
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maps.Copy(files, parts)
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snapshot = &Reader{Zip: reader.Zip, files: files, encryption: e.encryption, documentIndex: reader.documentIndex, selectedVersion: reader.selectedVersion}
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if err := snapshot.initRootContext(ctx); err != nil {
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return err
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}
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doc, err := snapshot.docStructureContext(ctx)
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if err != nil {
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return err
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}
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snapshotPages = make(map[string]Page, len(doc.Pages.Page))
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for _, page := range doc.Pages.Page {
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snapshotPages[editorResourceID(page.ID)] = page
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}
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}
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original := make(map[string]bool)
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if source != nil {
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var err error
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original, err = structurePageObjectIDs(ctx, e.source.reader, source.ref)
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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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maps.Copy(original, known)
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page := snapshotPages[key]
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name := snapshot.ResPath(page.BaseLoc)
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scanned := generated[name]
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remaining := scanned.objects
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if remaining == nil || !scanned.matches(parts[name]) {
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var err error
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remaining, err = structurePageObjectIDs(ctx, snapshot, page)
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if err != nil {
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return err
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}
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} else if snapshot.doc.Annotations != "" {
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if _, err := snapshot.DocContext(ctx); err != nil {
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return err
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}
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visitor := &structureObjectVisitor{objects: maps.Clone(remaining)}
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renderer := NewRenderer(snapshot)
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renderer.pageContext = ctx
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for _, annotation := range snapshot.Annots[page.ID] {
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if err := renderer.walkAnnotation(annotation, visitor); err != nil {
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return err
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}
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}
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remaining = visitor.objects
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}
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remainingObjects[key] = remaining
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links, err := structureRemapLinks(ctx, e.structureRemaps[key])
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if err != nil {
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return err
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}
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related := make(map[string][]string)
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for from, targets := range links {
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for _, to := range targets {
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if err := ctx.Err(); err != nil {
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return err
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}
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related[from] = append(related[from], to)
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related[to] = append(related[to], from)
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}
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}
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for id := range remaining {
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if len(related[id]) != 0 {
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original[id] = true
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}
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}
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pending := slices.Collect(maps.Keys(original))
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for len(pending) != 0 {
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if err := ctx.Err(); err != nil {
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return err
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}
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id := pending[len(pending)-1]
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pending = pending[:len(pending)-1]
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for _, next := range related[id] {
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if !original[next] {
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original[next] = true
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pending = append(pending, next)
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}
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}
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}
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for id := range original {
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if err := ctx.Err(); err != nil {
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return err
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}
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if len(links[id]) != 0 {
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if pageRemaps[key] == nil {
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pageRemaps[key] = make(map[string][]string)
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}
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pageRemaps[key][id] = links[id]
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}
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if !remaining[id] {
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if removedObjects[key] == nil {
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removedObjects[key] = make(map[string]bool)
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}
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removedObjects[key][id] = true
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}
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}
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}
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if len(removedPages) == 0 && len(removedObjects) == 0 && len(pageRemaps) == 0 {
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return nil
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}
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protected := make(map[string]bool)
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for index, tag := range tags {
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if !knownTags[index] {
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protected[e.source.reader.ResPath(tag.FileLoc)] = true
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}
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}
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isolated := make(map[string]string)
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originals := make(map[string][]byte)
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redirects := make(map[int]string)
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for index, tag := range tags {
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if !knownTags[index] {
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continue
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}
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name := e.source.reader.ResPath(tag.FileLoc)
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data, ok := originals[name]
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if !ok {
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data, ok = parts[name]
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if !ok {
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data, err = e.source.reader.readFileViewContext(ctx, name)
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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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originals[name] = data
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}
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remaps := pageRemaps
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if starts := e.source.structureStarts[index]; len(starts) != 0 {
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remaps = maps.Clone(pageRemaps)
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for page, start := range starts {
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links, err := structureRemapLinks(ctx, e.structureRemaps[page][start:])
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if err != nil {
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return err
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}
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remaps[page] = links
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}
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}
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mappedObjects := make(map[string]map[string][]string)
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updated, err := rewriteStructureReferences(ctx, data, tag, func(page string, ids []string) (string, []string, error) {
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key := editorResourceID(page)
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if removedPages[key] {
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return page, nil, nil
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}
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kept := make([]string, 0, len(ids))
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for _, id := range ids {
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canonical := editorResourceID(id)
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if len(remaps[key][canonical]) != 0 {
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mapped, ok := mappedObjects[key][canonical]
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if !ok {
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var err error
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mapped, err = structureMappedIDs(ctx, canonical, remaps[key], remainingObjects[key])
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if err != nil {
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return "", nil, err
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}
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if mappedObjects[key] == nil {
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mappedObjects[key] = make(map[string][]string)
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}
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mappedObjects[key][canonical] = mapped
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}
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kept = append(kept, mapped...)
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} else if !removedObjects[key][canonical] {
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kept = append(kept, id)
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}
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}
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return page, kept, nil
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})
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if err != nil {
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return err
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}
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if !bytes.Equal(data, updated) {
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if protected[name] {
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target := isolated[name]
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if target == "" {
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target = packageAvailableName(e.source.reader, parts, path.Join(e.packageDirectory(), "Tags", "Tag.xml"))
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isolated[name] = target
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}
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redirects[index] = target
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name = target
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}
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parts[name] = updated
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}
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}
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if len(redirects) != 0 {
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return e.redirectStructureEntries(parts, redirects)
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}
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return nil
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}
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// redirectStructureEntries 一次改写输出快照中的标引路径，保留同次页面及索引改动
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// 入参: parts 输出覆盖条目, targets 标引入口序号及新内容路径
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// 返回: error 索引读取或路径改写错误
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func (e *Editor) redirectStructureEntries(parts map[string][]byte, targets map[int]string) error {
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name, data, _, entries, err := editorStructureIndex(e.source, parts)
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if err != nil {
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return err
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}
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patches := make([]editorXMLPatch, 0, len(targets))
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for index, target := range targets {
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if index < 0 || index >= len(entries) {
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return fmt.Errorf("custom tag structure not found: %d", index)
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}
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loc := entries[index].child("FileLoc")
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if loc == nil {
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return fmt.Errorf("custom tag requires FileLoc")
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}
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var value bytes.Buffer
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if err := xml.EscapeText(&value, []byte("/"+target)); err != nil {
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return err
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}
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patches = append(patches, editorXMLContent(data, loc, value.Bytes()))
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}
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parts[name] = editorPatchXML(data, patches)
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return nil
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}
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// remapStructureObjects 将图元修改和标引编号迁移作为一次操作提交，映射只作用于当前页
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// 入参: page 页面索引, remaps 按修改顺序记录的编号映射, edit 图元修改
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// 返回: error 图元修改错误
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func (e *Editor) remapStructureObjects(page int, remaps []map[string]string, edit func() error) error {
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if len(remaps) == 0 || e.source == nil || e.source.document.CustomTags.Path == "" && len(e.source.document.CustomTags.CustomTag) == 0 {
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return edit()
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}
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return e.Transaction(func(editor *Editor) error {
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if err := edit(); err != nil {
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return err
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}
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if editor.structureRemaps == nil {
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editor.structureRemaps = make(map[string][]map[string]string)
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}
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key := editorResourceID(editor.pages[page].ID)
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next := slices.Clone(editor.structureRemaps[key])
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for _, ids := range remaps {
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if len(ids) != 0 {
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next = append(next, maps.Clone(ids))
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}
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}
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editor.structureRemaps[key] = next
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return nil
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})
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}
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// structureRemapStarts 记录各页面已应用的编号迁移位置，不与后续编辑共享可变状态
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// 返回: map[string]int 页面编号及已应用的迁移记录数
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func (e *Editor) structureRemapStarts() map[string]int {
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starts := make(map[string]int, len(e.structureRemaps))
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for page, remaps := range e.structureRemaps {
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starts[page] = len(remaps)
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}
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return starts
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}
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// structureRemapLinks 合并按操作顺序记录的编号迁移，保留一对多关系并排除重复边
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// 入参: ctx 取消上下文, remaps 图元编号迁移记录
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// 返回: map[string][]string 原编号及其迁移目标, error 取消错误
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func structureRemapLinks(ctx context.Context, remaps []map[string]string) (map[string][]string, error) {
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links := make(map[string][]string)
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seen := make(map[[2]string]bool)
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for _, ids := range remaps {
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if err := ctx.Err(); err != nil {
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return nil, err
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}
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for from, to := range ids {
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if err := ctx.Err(); err != nil {
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return nil, err
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}
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key := [2]string{from, to}
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if from == to || seen[key] {
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continue
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}
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seen[key] = true
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links[from] = append(links[from], to)
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}
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}
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return links, ctx.Err()
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}
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// structureMappedIDs 沿编号迁移关系收集当前仍可达的图元，同一来源的结果不重复
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// 入参: ctx 取消上下文, id 原编号, links 编号迁移关系, remaining 当前页面可达图元
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// 返回: []string 保留的原编号及迁移后的编号, error 取消错误
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func structureMappedIDs(ctx context.Context, id string, links map[string][]string, remaining map[string]bool) ([]string, error) {
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var result []string
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pending := []string{id}
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seen := make(map[string]bool)
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for len(pending) != 0 {
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if err := ctx.Err(); err != nil {
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return nil, err
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}
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id = pending[len(pending)-1]
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pending = pending[:len(pending)-1]
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if seen[id] {
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continue
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}
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seen[id] = true
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if remaining[id] {
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result = append(result, id)
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}
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for i := len(links[id]) - 1; i >= 0; i-- {
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pending = append(pending, links[id][i])
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}
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}
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return result, nil
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}
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// structurePageObjectIDs 收集页面、模板、复合资源及注释外观中的图元标识，不加载字体或图像
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// 入参: ctx 取消上下文, reader 资源已加载的阅读器, page 页面引用
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// 返回: map[string]bool 可达图元标识, error 页面读取或遍历错误
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func structurePageObjectIDs(ctx context.Context, reader *Reader, page Page) (map[string]bool, error) {
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if _, err := reader.DocContext(ctx); err != nil {
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return nil, err
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}
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content, err := reader.PageContentContext(ctx, page)
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if err != nil {
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return nil, err
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}
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renderer := NewRenderer(reader, WithAnnotations(true))
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renderer.pageContext = ctx
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visitor := &structureObjectVisitor{objects: make(map[string]bool)}
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if err := renderer.WalkPage(content, visitor); err != nil {
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return nil, err
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}
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if err := ctx.Err(); err != nil {
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return nil, err
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}
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return visitor.objects, nil
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}
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// annotationStructureSource 记录被修改注释原有的外观图元，供保存时清理失效标引
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// 入参: page 页面索引, wanted 待修改注释标识
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// 返回: *editorSource 保留已知图元的包快照, error 读取或遍历错误
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func (e *Editor) annotationStructureSource(page int, wanted map[string]bool) (*editorSource, error) {
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base := e.source
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if base.document.CustomTags.Path == "" && len(base.document.CustomTags.CustomTag) == 0 {
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return base, nil
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}
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tags, err := base.reader.CustomTags()
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if err != nil {
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return nil, err
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}
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knownTags, err := base.reader.structureReferenceTags(context.Background(), tags)
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if err != nil {
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return nil, err
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}
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if !slices.Contains(knownTags, true) {
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return base, nil
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}
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if _, err := base.reader.Doc(); err != nil {
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return nil, err
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}
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if source := base.pages[e.pages[page].ID]; source != nil {
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if _, err := base.reader.PageContent(source.ref); err != nil {
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return nil, err
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}
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}
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visitor := &structureObjectVisitor{objects: make(map[string]bool)}
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renderer := NewRenderer(base.reader)
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for _, annotation := range base.reader.Annots[e.pages[page].ID] {
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if wanted[editorResourceID(annotation.ID)] {
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if err := renderer.walkAnnotation(annotation, visitor); err != nil {
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return nil, err
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}
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}
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}
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next := *base
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next.structureObjects = maps.Clone(base.structureObjects)
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if next.structureObjects == nil {
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next.structureObjects = make(map[string]map[string]bool)
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}
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key := editorResourceID(e.pages[page].ID)
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maps.Copy(visitor.objects, next.structureObjects[key])
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next.structureObjects[key] = visitor.objects
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return &next, nil
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}
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// rewriteStructureReferences 仅改写已识别公文命名空间的叶子引用，保留其他XML字节
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// 入参: ctx 取消上下文, data 原始标引, tag 标引入口, rewrite 引用映射，空标识列表表示删除引用
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// 返回: []byte 修改后的标引, error 解析或取消错误
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func rewriteStructureReferences(ctx context.Context, data []byte, tag CustomTag, rewrite func(string, []string) (string, []string, error)) ([]byte, error) {
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root, err := parseEditorXMLContext(ctx, data)
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if err != nil {
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return nil, err
|
|
}
|
|
if !structureOfficial(tag, root.name.Space) {
|
|
structure, err := parseStructure(ctx, data, tag)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if !structureInvoiceReferences(structure) {
|
|
return data, nil
|
|
}
|
|
}
|
|
var patches []editorXMLPatch
|
|
var walk func(*editorXML, int) error
|
|
walk = func(node *editorXML, depth int) error {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
if depth > 128 {
|
|
return fmt.Errorf("custom tag structure limit exceeded")
|
|
}
|
|
if node.name.Space != root.name.Space {
|
|
return nil
|
|
}
|
|
if node.name.Local == "ObjectRef" && len(node.children) == 0 {
|
|
value := strings.TrimSpace(editorImportText(data, node))
|
|
ids := structureObjectIDs(value)
|
|
if len(ids) == 0 {
|
|
return nil
|
|
}
|
|
page, next, err := rewrite(node.attr("PageRef"), ids)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if len(next) == 0 {
|
|
patches = append(patches, editorXMLPatch{start: node.start, end: node.end})
|
|
return nil
|
|
}
|
|
if strings.Join(next, ",") != strings.Join(ids, ",") {
|
|
var text bytes.Buffer
|
|
_ = xml.EscapeText(&text, []byte(strings.Join(next, ",")))
|
|
patches = append(patches, editorXMLContent(data, node, text.Bytes()))
|
|
}
|
|
if page != node.attr("PageRef") {
|
|
patch, err := editorXMLAttributePatch(data, node, "PageRef", page)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
patches = append(patches, patch)
|
|
}
|
|
return nil
|
|
}
|
|
for _, child := range node.children {
|
|
if err := walk(child, depth+1); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
if err := walk(root, 1); err != nil {
|
|
return nil, err
|
|
}
|
|
if len(patches) == 0 {
|
|
return data, nil
|
|
}
|
|
return editorPatchXML(data, patches), nil
|
|
}
|
|
|
|
// structures 迁移所选页面的公文标引，按已迁移图元映射引用，不猜测其他行业的引用规则
|
|
// 返回: []byte 标引索引条目, error 读取、解析或取消错误
|
|
func (m *editorPageImport) structures() ([]byte, error) {
|
|
tags, err := m.reader.CustomTagsContext(m.ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
knownTags, err := m.reader.structureReferenceTags(m.ctx, tags)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var entries []byte
|
|
for i, tag := range tags {
|
|
if !knownTags[i] {
|
|
continue
|
|
}
|
|
data, err := m.readFile(m.reader.ResPath(tag.FileLoc))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
count := 0
|
|
updated, err := rewriteStructureReferences(m.ctx, data, tag, func(page string, ids []string) (string, []string, error) {
|
|
key := editorImportKey(page)
|
|
if !m.pages[key] {
|
|
return page, nil, nil
|
|
}
|
|
var mapped []string
|
|
for _, id := range ids {
|
|
if value := m.ids[editorImportKey(id)]; value != "" {
|
|
mapped = append(mapped, value)
|
|
}
|
|
}
|
|
count += len(mapped)
|
|
return m.ids[key], mapped, nil
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if count == 0 {
|
|
continue
|
|
}
|
|
name := packageAvailableName(m.target, m.files, path.Join(m.directory, "Tags", fmt.Sprintf("Tag_%d.xml", i)))
|
|
m.files[name] = updated
|
|
var content []byte
|
|
if tag.SchemaLoc != "" {
|
|
schema, err := m.copyData(m.reader.ResPath(tag.SchemaLoc), path.Join(m.directory, "Tags", path.Base(tag.SchemaLoc)), false)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
content = append(content, editorXMLText("SchemaLoc", "/"+strings.TrimPrefix(schema, "/"))...)
|
|
}
|
|
content = append(content, editorXMLText("FileLoc", "/"+name)...)
|
|
var attrs ofdAttrs
|
|
attrs.add("TypeID", tag.TypeID)
|
|
attrs.add("NameSpace", tag.NameSpace)
|
|
entry, err := editorXMLContainer("CustomTag", attrs, content)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
entries = append(entries, entry...)
|
|
}
|
|
return entries, nil
|
|
}
|