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Work around truncated Telegram inline photos

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This commit is contained in:
corrado.mulas
2026-10-04 10:32:58 +02:00
parent 0212d48555
commit d5b6ab0c24
4 changed files with 205 additions and 55 deletions
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23
internal/render/render_test.go
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@@ -107,17 +107,38 @@ func TestRenderIntegration(t *testing.T) {
if len(result.JPEG) == 0 || !strings.HasPrefix(string(result.JPEG), "\xff\xd8") {
t.Fatal("output is not a JPEG file")
}
jpegWidth, jpegHeight, err := imageSizeBytes(result.JPEG)
if err != nil {
t.Fatalf("decode jpeg size: %v", err)
}
if result.JPEGWidth != jpegWidth || result.JPEGHeight != jpegHeight {
t.Errorf("reported JPEG size %dx%d, decoded %dx%d", result.JPEGWidth, result.JPEGHeight, jpegWidth, jpegHeight)
}
if len(result.Thumbnail) == 0 || !strings.HasPrefix(string(result.Thumbnail), "\xff\xd8") {
t.Fatal("output is not a JPEG thumbnail")
}
thumbWidth, thumbHeight, err := imageSizeBytes(result.Thumbnail)
if err != nil {
t.Fatalf("decode thumbnail size: %v", err)
}
if thumbWidth > inlineThumbnailSide || thumbHeight > inlineThumbnailSide {
t.Errorf("thumbnail is %dx%d, want each side <= %d", thumbWidth, thumbHeight, inlineThumbnailSide)
}
linked, err := r.Render(ctx, "", `\hypertarget{details}{Details}\par\hyperlink{details}{Go to details}`, 150)
if err != nil {
t.Fatalf("hyperlink render failed: %v", err)
}
if len(linked.PDF) == 0 || len(linked.PNG) == 0 || len(linked.JPEG) == 0 {
if len(linked.PDF) == 0 || len(linked.PNG) == 0 || len(linked.JPEG) == 0 || len(linked.Thumbnail) == 0 {
t.Fatal("hyperlink render returned an empty format")
}
}
func pngSizeBytes(data []byte) (int, int, error) {
return imageSizeBytes(data)
}
func imageSizeBytes(data []byte) (int, int, error) {
config, _, err := image.DecodeConfig(bytes.NewReader(data))
if err != nil {
return 0, 0, err