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Identify now parses zTXt and iTXt chunks

pull/1574/head
Brian Popow 6 years ago
parent
effd8bbecf
commit
814982e418
2 changed files with 42 additions and 23 deletions
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  1. 6
      src/ImageSharp/Formats/Png/PngDecoderCore.cs
  2. 59
      tests/ImageSharp.Tests/Formats/Png/PngMetadataTests.cs

6
src/ImageSharp/Formats/Png/PngDecoderCore.cs
View File

@ -273,6 +273,12 @@ namespace SixLabors.ImageSharp.Formats.Png
case PngChunkType.Text:
this.ReadTextChunk(pngMetadata, chunk.Data.Array.AsSpan(0, chunk.Length));
break;
case PngChunkType.CompressedText:
this.ReadCompressedTextChunk(pngMetadata, chunk.Data.Array.AsSpan(0, chunk.Length));
break;
case PngChunkType.InternationalText:
this.ReadInternationalTextChunk(pngMetadata, chunk.Data.Array.AsSpan(0, chunk.Length));
break;
case PngChunkType.End:
this.isEndChunkReached = true;
break;

59
tests/ImageSharp.Tests/Formats/Png/PngMetadataTests.cs
View File

@ -56,17 +56,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Png
using (Image<TPixel> image = provider.GetImage(new PngDecoder()))
{
PngMetadata meta = image.Metadata.GetFormatMetadata(PngFormat.Instance);
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Comment") && m.Value.Equals("comment"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Author") && m.Value.Equals("ImageSharp"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Copyright") && m.Value.Equals("ImageSharp"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Title") && m.Value.Equals("unittest"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Description") && m.Value.Equals("compressed-text"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("International") && m.Value.Equals("'e', mu'tlheghvam, ghaH yu'") && m.LanguageTag.Equals("x-klingon") && m.TranslatedKeyword.Equals("warning"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("International2") && m.Value.Equals("ИМАГЕШАРП") && m.LanguageTag.Equals("rus"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("CompressedInternational") && m.Value.Equals("la plume de la mante") && m.LanguageTag.Equals("fra") && m.TranslatedKeyword.Equals("foobar"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("CompressedInternational2") && m.Value.Equals("這是一個考驗") && m.LanguageTag.Equals("chinese"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("NoLang") && m.Value.Equals("this text chunk is missing a language tag"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("NoTranslatedKeyword") && m.Value.Equals("dieser chunk hat kein übersetztes Schlüßelwort"));
VerifyTextDataIsPresent(meta);
}
}
@ -85,17 +75,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Png
using (Image<Rgba32> image = decoder.Decode<Rgba32>(Configuration.Default, memoryStream))
{
PngMetadata meta = image.Metadata.GetFormatMetadata(PngFormat.Instance);
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Comment") && m.Value.Equals("comment"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Author") && m.Value.Equals("ImageSharp"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Copyright") && m.Value.Equals("ImageSharp"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Title") && m.Value.Equals("unittest"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Description") && m.Value.Equals("compressed-text"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("International") && m.Value.Equals("'e', mu'tlheghvam, ghaH yu'") && m.LanguageTag.Equals("x-klingon") && m.TranslatedKeyword.Equals("warning"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("International2") && m.Value.Equals("ИМАГЕШАРП") && m.LanguageTag.Equals("rus"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("CompressedInternational") && m.Value.Equals("la plume de la mante") && m.LanguageTag.Equals("fra") && m.TranslatedKeyword.Equals("foobar"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("CompressedInternational2") && m.Value.Equals("這是一個考驗") && m.LanguageTag.Equals("chinese"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("NoLang") && m.Value.Equals("this text chunk is missing a language tag"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("NoTranslatedKeyword") && m.Value.Equals("dieser chunk hat kein übersetztes Schlüßelwort"));
VerifyTextDataIsPresent(meta);
}
}
}
@ -178,7 +158,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Png
IgnoreMetadata = true
};
var testFile = TestFile.Create(TestImages.Png.Blur);
var testFile = TestFile.Create(TestImages.Png.PngWithMetadata);
using (Image<Rgba32> image = testFile.CreateRgba32Image(options))
{
@ -220,5 +200,38 @@ namespace SixLabors.ImageSharp.Tests.Formats.Png
Assert.Equal(resolutionUnit, meta.ResolutionUnits);
}
}
[Theory]
[InlineData(TestImages.Png.PngWithMetadata)]
public void Identify_ReadsTextData(string imagePath)
{
var testFile = TestFile.Create(imagePath);
using (var stream = new MemoryStream(testFile.Bytes, false))
{
IImageInfo imageInfo = Image.Identify(stream);
Assert.NotNull(imageInfo);
PngMetadata meta = imageInfo.Metadata.GetFormatMetadata(PngFormat.Instance);
VerifyTextDataIsPresent(meta);
}
}
private static void VerifyTextDataIsPresent(PngMetadata meta)
{
Assert.NotNull(meta);
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Comment") && m.Value.Equals("comment"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Author") && m.Value.Equals("ImageSharp"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Copyright") && m.Value.Equals("ImageSharp"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Title") && m.Value.Equals("unittest"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("Description") && m.Value.Equals("compressed-text"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("International") && m.Value.Equals("'e', mu'tlheghvam, ghaH yu'") &&
m.LanguageTag.Equals("x-klingon") && m.TranslatedKeyword.Equals("warning"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("International2") && m.Value.Equals("ИМАГЕШАРП") && m.LanguageTag.Equals("rus"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("CompressedInternational") && m.Value.Equals("la plume de la mante") &&
m.LanguageTag.Equals("fra") && m.TranslatedKeyword.Equals("foobar"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("CompressedInternational2") && m.Value.Equals("這是一個考驗") &&
m.LanguageTag.Equals("chinese"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("NoLang") && m.Value.Equals("this text chunk is missing a language tag"));
Assert.Contains(meta.TextData, m => m.Keyword.Equals("NoTranslatedKeyword") && m.Value.Equals("dieser chunk hat kein übersetztes Schlüßelwort"));
}
}
}

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