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103 lines
2.9 KiB
103 lines
2.9 KiB
package thumb
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"github.com/cloudreve/Cloudreve/v4/pkg/filemanager/manager/entitysource"
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"github.com/cloudreve/Cloudreve/v4/pkg/logging"
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"github.com/cloudreve/Cloudreve/v4/pkg/setting"
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"github.com/cloudreve/Cloudreve/v4/pkg/util"
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"github.com/gofrs/uuid"
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)
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func NewLibreOfficeGenerator(l logging.Logger, settings setting.Provider) *LibreOfficeGenerator {
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return &LibreOfficeGenerator{l: l, settings: settings}
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}
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type LibreOfficeGenerator struct {
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settings setting.Provider
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l logging.Logger
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}
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func (l *LibreOfficeGenerator) Generate(ctx context.Context, es entitysource.EntitySource, ext string, previous *Result) (*Result, error) {
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if !util.IsInExtensionListExt(l.settings.LibreOfficeThumbExts(ctx), ext) {
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return nil, fmt.Errorf("unsupported video format: %w", ErrPassThrough)
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}
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if es.Entity().Size() > l.settings.LibreOfficeThumbMaxSize(ctx) {
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return nil, fmt.Errorf("file is too big: %w", ErrPassThrough)
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}
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tempOutputPath := filepath.Join(
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util.DataPath(l.settings.TempPath(ctx)),
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thumbTempFolder,
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fmt.Sprintf("soffice_%s", uuid.Must(uuid.NewV4()).String()),
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)
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tempInputPath := ""
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if es.IsLocal() {
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tempInputPath = es.LocalPath(ctx)
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} else {
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// If not local policy files, download to temp folder
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tempInputPath = filepath.Join(
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util.DataPath(l.settings.TempPath(ctx)),
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"thumb",
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fmt.Sprintf("soffice_%s.%s", uuid.Must(uuid.NewV4()).String(), ext),
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)
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// Due to limitations of ffmpeg, we need to write the input file to disk first
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tempInputFile, err := util.CreatNestedFile(tempInputPath)
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if err != nil {
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return nil, fmt.Errorf("failed to create temp file: %w", err)
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}
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defer os.Remove(tempInputPath)
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defer tempInputFile.Close()
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if _, err = io.Copy(tempInputFile, es); err != nil {
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return &Result{Path: tempOutputPath}, fmt.Errorf("failed to write input file: %w", err)
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}
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tempInputFile.Close()
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}
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// Convert the document to an image
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encode := l.settings.ThumbEncode(ctx)
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cmd := exec.CommandContext(ctx, l.settings.LibreOfficePath(ctx), "--headless",
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"-nologo", "--nofirststartwizard", "--invisible", "--norestore", "--convert-to",
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encode.Format, "--outdir", tempOutputPath, tempInputPath)
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// Redirect IO
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var stdErr bytes.Buffer
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cmd.Stderr = &stdErr
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if err := cmd.Run(); err != nil {
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l.l.Warning("Failed to invoke LibreOffice: %s", stdErr.String())
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return &Result{Path: tempOutputPath}, fmt.Errorf("failed to invoke LibreOffice: %w, raw output: %s", err, stdErr.String())
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}
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return &Result{
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Path: filepath.Join(
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tempOutputPath,
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strings.TrimSuffix(filepath.Base(tempInputPath), filepath.Ext(tempInputPath))+"."+encode.Format,
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),
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Continue: true,
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Cleanup: []func(){func() { _ = os.RemoveAll(tempOutputPath) }},
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}, nil
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}
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func (l *LibreOfficeGenerator) Priority() int {
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return 50
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}
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func (l *LibreOfficeGenerator) Enabled(ctx context.Context) bool {
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return l.settings.LibreOfficeThumbGeneratorEnabled(ctx)
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}
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