feat(编辑字体): 优化多文档及版本字体清理

ofdgo_editor_font_binding.go

@@ -546,17 +546,19 @@ func pruneExternalFontFiles(ctx context.Context, reader *Reader, candidates ...s
 	if len(removed) == 0 {
 		return nil
 	}
-	files, structures := make(map[string]bool), map[string]bool{"OFD.xml": true}
-	for i := range reader.DocumentCount() {
-		_, xmlFiles, err := reader.documentDependencies(ctx, i)
-		if err != nil {
-			if ctx.Err() != nil {
-				return ctx.Err()
-			}
-			return nil
+	indexes := make([]int, reader.DocumentCount())
+	for index := range indexes {
+		if err := ctx.Err(); err != nil {
+			return err
 		}
-		maps.Copy(structures, xmlFiles)
+		indexes[index] = index
 	}
+	_, structures, err := reader.documentDependencies(ctx, indexes...)
+	if err != nil {
+		return ctx.Err()
+	}
+	structures["OFD.xml"] = true
+	files := make(map[string]bool)
 	versions := make(map[string]*editorFontXML)
 	names := slices.Sorted(maps.Keys(structures))
 	for _, name := range slices.Sorted(maps.Keys(reader.fileNames)) {

ofdgo_editor_font_cleanup.go

@@ -17,6 +17,7 @@ package ofdgo
 import (
 	"bytes"
 	"context"
+	"fmt"
 	"io"
 	"maps"
 	"slices"
@@ -46,14 +47,31 @@ func (e *Editor) compactVersionFonts(ctx context.Context, parts map[string][]byt
 	if err := view.initRootContext(ctx); err != nil {
 		return err
 	}
+	data, err := view.readFileViewContext(ctx, "OFD.xml")
+	if err != nil {
+		return err
+	}
+	root, err := parseEditorXMLContext(ctx, data)
+	if err != nil {
+		return err
+	}
 	candidates, seen := make(map[string]bool), make(map[string]bool)
-	for index := range view.DocumentCount() {
-		view.documentIndex = index
-		versions, err := view.DocumentVersionsContext(ctx)
+	for _, body := range root.children {
+		if err := ctx.Err(); err != nil {
+			return err
+		}
+		if !body.matchesOFD("DocBody") {
+			continue
+		}
+		versions, err := parseVersionEntries(ctx, body)
 		if err != nil {
 			return err
 		}
-		for _, version := range versions {
+		for _, entry := range versions {
+			version, err := view.readDocumentVersionContext(ctx, entry.ID, entry.Location)
+			if err != nil {
+				return fmt.Errorf("version %s: %w", entry.ID, err)
+			}
 			for _, file := range version.Files {
 				if err := ctx.Err(); err != nil {
 					return err

ofdgo_version.go

@@ -109,6 +109,16 @@ func (r *Reader) documentVersionEntriesContext(ctx context.Context) ([]DocumentV
 	if body == nil {
 		return nil, fmt.Errorf("document body not found: %d", r.documentIndex)
 	}
+	return parseVersionEntries(ctx, body)
+}
+
+// parseVersionEntries 校验一个文档的版本列表，复用已解析的主入口节点
+// 入参: ctx 取消上下文, body 文档入口节点
+// 返回: []DocumentVersionInfo 版本入口属性, error 结构或取消错误
+func parseVersionEntries(ctx context.Context, body *editorXML) ([]DocumentVersionInfo, error) {
+	if err := ctx.Err(); err != nil {
+		return nil, err
+	}
 	versions := body.child("Versions")
 	if versions == nil {
 		return nil, nil