mirror of
https://github.com/xiaoqidun/ofdgo.git
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101 lines
3.5 KiB
Go
101 lines
3.5 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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"context"
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"encoding/xml"
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"maps"
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"slices"
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"strings"
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)
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// compressionFontBinding 保存资源索引中的字体标识、文件路径及可裁剪状态
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type compressionFontBinding struct {
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id string
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file string
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unsafe bool
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}
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// compressionFontUsage 按文档解析字体引用，按文件路径合并共享字体的全部用字
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// 入参: ctx 取消上下文, parts 输出改动, generated 自产页面引用, documents 文档入口, resources 资源索引, references 各文件引用, read 输出文件读取方法
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// 返回: map[string]*editorFontUsage 各字体文件的用字，无法确定作用域时为空, error 读取或取消错误
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func (r *Reader) compressionFontUsage(ctx context.Context, parts map[string][]byte, generated map[string]editorGeneratedReferences, documents map[string]bool, resources []string, references map[string]*editorResourceRefs, read func(string) ([]byte, error)) (map[string]*editorFontUsage, error) {
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bindings := make(map[string][]compressionFontBinding)
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for _, name := range resources {
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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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data, err := read(name)
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if err != nil {
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return nil, err
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}
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root, err := parseEditorXML(data)
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if err != nil {
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return nil, err
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}
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fonts := root.child("Fonts")
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if fonts == nil {
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continue
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}
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for _, font := range fonts.children {
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file := font.child("FontFile")
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if file == nil {
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continue
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}
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var value string
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if err := xml.Unmarshal(data[file.start:file.end], &value); err != nil {
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return nil, err
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}
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location := editorResourceLocation(name, root.attr("BaseLoc"), value)
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id, charset := editorResourceID(font.attr("ID")), font.attr("Charset")
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unsafe := id == "" || charset != "" && !strings.EqualFold(charset, "unicode") || location != cleanPackagePath(resolveResourcePath(name, root.attr("BaseLoc"), value))
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bindings[name] = append(bindings[name], compressionFontBinding{id: id, file: location, unsafe: unsafe})
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}
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}
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used := make(map[string]bool)
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result := make(map[string]*editorFontUsage)
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for _, entry := range slices.Sorted(maps.Keys(documents)) {
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scope, err := r.versionFileDependencies(ctx, entry, parts, generated)
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if err != nil {
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return nil, err
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}
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refs := editorResourceRefs{fonts: make(map[string]*editorFontUsage)}
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for name := range scope {
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if source := references[name]; source != nil {
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for id, usage := range source.fonts {
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refs.fontUsage(id).merge(usage, false)
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}
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used[name] = true
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}
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}
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for name := range scope {
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for _, binding := range bindings[name] {
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usage := refs.fonts[binding.id]
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if result[binding.file] == nil {
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result[binding.file] = newEditorFontUsage()
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}
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result[binding.file].merge(usage, binding.unsafe)
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}
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}
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}
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for name, refs := range references {
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if !used[name] && (len(refs.fonts) != 0 || len(bindings[name]) != 0) {
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return nil, nil
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}
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}
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return result, ctx.Err()
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}
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