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75 lines
1.8 KiB
75 lines
1.8 KiB
2 years ago
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package thumb
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import (
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"bytes"
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"context"
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"errors"
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"fmt"
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"os/exec"
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"strings"
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)
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var (
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ErrUnknownGenerator = errors.New("unknown generator type")
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ErrUnknownOutput = errors.New("unknown output from generator")
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)
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// TestGenerator tests thumb generator by getting lib version
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func TestGenerator(ctx context.Context, name, executable string) (string, error) {
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switch name {
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case "vips":
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return testVipsGenerator(ctx, executable)
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case "ffmpeg":
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return testFfmpegGenerator(ctx, executable)
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case "libreOffice":
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return testLibreOfficeGenerator(ctx, executable)
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default:
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return "", ErrUnknownGenerator
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}
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}
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func testVipsGenerator(ctx context.Context, executable string) (string, error) {
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cmd := exec.CommandContext(ctx, executable, "--version")
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var output bytes.Buffer
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cmd.Stdout = &output
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if err := cmd.Run(); err != nil {
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return "", fmt.Errorf("failed to invoke vips executable: %w", err)
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}
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if !strings.Contains(output.String(), "vips") {
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return "", ErrUnknownOutput
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}
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return output.String(), nil
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}
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func testFfmpegGenerator(ctx context.Context, executable string) (string, error) {
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cmd := exec.CommandContext(ctx, executable, "-version")
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var output bytes.Buffer
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cmd.Stdout = &output
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if err := cmd.Run(); err != nil {
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return "", fmt.Errorf("failed to invoke ffmpeg executable: %w", err)
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}
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if !strings.Contains(output.String(), "ffmpeg") {
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return "", ErrUnknownOutput
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}
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return output.String(), nil
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}
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func testLibreOfficeGenerator(ctx context.Context, executable string) (string, error) {
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cmd := exec.CommandContext(ctx, executable, "--version")
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var output bytes.Buffer
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cmd.Stdout = &output
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if err := cmd.Run(); err != nil {
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return "", fmt.Errorf("failed to invoke libreoffice executable: %w", err)
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}
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if !strings.Contains(output.String(), "LibreOffice") {
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return "", ErrUnknownOutput
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}
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return output.String(), nil
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}
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