mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-30 01:27:26 +08:00
56 lines
1.7 KiB
Go
56 lines
1.7 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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"fmt"
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"io"
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"maps"
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"slices"
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"github.com/xiaoqidun/pdfgo"
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)
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// writeAttachments 在页面绘制后读取附件，保留文件字节，不自动添加个人信息和时间
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// 入参: ctx 取消上下文, options PDF写出配置
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// 返回: error 附件读取或取消错误
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func (n *pdfNavigation) writeAttachments(ctx context.Context, options *pdfgo.RewriteOptions) error {
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if len(n.attachments) == 0 {
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return nil
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}
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options.Attachments = make(map[string]*pdfgo.EmbeddedFile, len(n.attachments))
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for _, id := range slices.Sorted(maps.Keys(n.attachments)) {
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if err := ctx.Err(); err != nil {
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return err
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}
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attachment := n.attachments[id]
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input, err := n.source.openFile(n.source.ResPath(attachment.FileLoc))
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if err != nil {
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return fmt.Errorf("read attachment %s: %w", id, err)
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}
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data, err := io.ReadAll(imageInput{ReadCloser: input, context: ctx})
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closeErr := input.Close()
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if err != nil {
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return fmt.Errorf("read attachment %s: %w", id, err)
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}
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if closeErr != nil {
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return closeErr
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}
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options.Attachments[id] = &pdfgo.EmbeddedFile{Name: attachment.FileName(), Data: data}
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}
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return ctx.Err()
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}
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