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feat(thumb): use libreoffice to generate thumb

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This commit is contained in:
Aaron Liu
2023-04-07 19:31:43 +08:00
parent 98b86b37de
commit ac536408c6
7 changed files with 162 additions and 25 deletions
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41
pkg/thumb/pipeline.go
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@@ -7,6 +7,9 @@ import (
model "github.com/cloudreve/Cloudreve/v3/models"
"github.com/cloudreve/Cloudreve/v3/pkg/util"
"io"
"os"
"path/filepath"
"reflect"
"sort"
"strconv"
)
@@ -15,7 +18,7 @@ import (
type Generator interface {
// Generate generates a thumbnail for a given reader. Src is the original file path, only provided
// for local policy files.
Generate(ctx context.Context, file io.Reader, src string, name string, options map[string]string) (string, error)
Generate(ctx context.Context, file io.Reader, src string, name string, options map[string]string) (*Result, error)
// Priority of execution order, smaller value means higher priority.
Priority() int
@@ -24,6 +27,12 @@ type Generator interface {
EnableFlag() string
}
type Result struct {
Path string
Continue bool
Cleanup []func()
}
type (
GeneratorType string
GeneratorList []Generator
@@ -54,19 +63,41 @@ func RegisterGenerator(generator Generator) {
sort.Sort(Generators)
}
func (p GeneratorList) Generate(ctx context.Context, file io.Reader, src, name string, options map[string]string) (string, error) {
func (p GeneratorList) Generate(ctx context.Context, file io.Reader, src, name string, options map[string]string) (*Result, error) {
inputFile, inputSrc, inputName := file, src, name
for _, generator := range p {
if model.IsTrueVal(options[generator.EnableFlag()]) {
res, err := generator.Generate(ctx, file, src, name, options)
res, err := generator.Generate(ctx, inputFile, inputSrc, inputName, options)
if errors.Is(err, ErrPassThrough) {
util.Log().Debug("Failed to generate thumbnail for %s: %s, passing through to next generator.", name, err)
util.Log().Debug("Failed to generate thumbnail using %s for %s: %s, passing through to next generator.", reflect.TypeOf(generator).String(), name, err)
continue
}
if res.Continue {
util.Log().Debug("Generator %s for %s returned continue, passing through to next generator.", reflect.TypeOf(generator).String(), name)
// defer cleanup funcs
for _, cleanup := range res.Cleanup {
defer cleanup()
}
// prepare file reader for next generator
intermediate, err := os.Open(res.Path)
if err != nil {
return nil, fmt.Errorf("failed to open intermediate thumb file: %w", err)
}
defer intermediate.Close()
inputFile = intermediate
inputSrc = res.Path
inputName = filepath.Base(res.Path)
continue
}
return res, err
}
}
return "", ErrNotAvailable
return nil, ErrNotAvailable
}
func (p GeneratorList) Priority() int {