Added Export and (un)Reduce to sharpCompress

adamhathcock · Jun 25, 2024 · 061273b · 061273b
1 parent 3eaac68
commit 061273b
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Showing 7 changed files with 1,307 additions and 1 deletion.
diff --git a/src/SharpCompress/Common/CompressionType.cs b/src/SharpCompress/Common/CompressionType.cs
@@ -16,5 +16,10 @@ public enum CompressionType
     Unknown,
     Deflate64,
     Shrink,
-    Lzw
+    Lzw,
+    Reduce1,
+    Reduce2,
+    Reduce3,
+    Reduce4,
+    Explode
 }
diff --git a/src/SharpCompress/Common/Zip/ZipCompressionMethod.cs b/src/SharpCompress/Common/Zip/ZipCompressionMethod.cs
@@ -4,6 +4,11 @@ internal enum ZipCompressionMethod
 {
     None = 0,
     Shrink = 1,
+    Reduce1 = 2,
+    Reduce2 = 3,
+    Reduce3 = 4,
+    Reduce4 = 5,
+    Explode = 6,
     Deflate = 8,
     Deflate64 = 9,
     BZip2 = 12,

diff --git a/src/SharpCompress/Common/Zip/ZipEntry.cs b/src/SharpCompress/Common/Zip/ZipEntry.cs
@@ -31,6 +31,11 @@ internal ZipEntry(ZipFilePart? filePart)
             ZipCompressionMethod.PPMd => CompressionType.PPMd,
             ZipCompressionMethod.None => CompressionType.None,
             ZipCompressionMethod.Shrink => CompressionType.Shrink,
+            ZipCompressionMethod.Reduce1 => CompressionType.Reduce1,
+            ZipCompressionMethod.Reduce2 => CompressionType.Reduce2,
+            ZipCompressionMethod.Reduce3 => CompressionType.Reduce3,
+            ZipCompressionMethod.Reduce4 => CompressionType.Reduce4,
+            ZipCompressionMethod.Explode => CompressionType.Explode,
             _ => CompressionType.Unknown
         };
 

diff --git a/src/SharpCompress/Common/Zip/ZipFilePart.cs b/src/SharpCompress/Common/Zip/ZipFilePart.cs
@@ -11,6 +11,8 @@
 using SharpCompress.Compressors.PPMd;
 using SharpCompress.Compressors.Shrink;
 using SharpCompress.Compressors.Xz;
+using SharpCompress.Compressors.Reduce;
+using SharpCompress.Compressors.Explode;
 using SharpCompress.IO;
 using ZstdSharp;
 
@@ -89,6 +91,27 @@ protected Stream CreateDecompressionStream(Stream stream, ZipCompressionMethod m
                     Header.UncompressedSize
                 );
             }
+            case ZipCompressionMethod.Reduce1:
+            {
+                return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 1);
+            }
+            case ZipCompressionMethod.Reduce2:
+            {
+                return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 2);
+            }
+            case ZipCompressionMethod.Reduce3:
+            {
+                return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 3);
+            }
+            case ZipCompressionMethod.Reduce4:
+            {
+                return new ReduceStream(stream, Header.CompressedSize, Header.UncompressedSize, 4);
+            }
+            case ZipCompressionMethod.Explode:
+            {
+                return new ExplodeStream(stream, Header.CompressedSize, Header.UncompressedSize, Header.Flags);
+            }
+
             case ZipCompressionMethod.Deflate:
             {
                 return new DeflateStream(stream, CompressionMode.Decompress);
@@ -203,6 +226,10 @@ protected Stream GetCryptoStream(Stream plainStream)
             {
                 case ZipCompressionMethod.None:
                 case ZipCompressionMethod.Shrink:
+                case ZipCompressionMethod.Reduce1:
+                case ZipCompressionMethod.Reduce2:
+                case ZipCompressionMethod.Reduce3:
+                case ZipCompressionMethod.Reduce4:
                 case ZipCompressionMethod.Deflate:
                 case ZipCompressionMethod.Deflate64:
                 case ZipCompressionMethod.BZip2: