Add support for Zstd archive format

rikyoz · Feb 6, 2025 · d634ede · d634ede
1 parent ee98288
commit d634ede
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Showing 3 changed files with 7 additions and 0 deletions.
diff --git a/include/bit7z/bitformat.hpp b/include/bit7z/bitformat.hpp
@@ -184,6 +184,7 @@ extern const BitInFormat Nsis;      ///< NSIS Archive Format
 extern const BitInFormat Lzma;      ///< LZMA Archive Format
 extern const BitInFormat Lzma86;    ///< LZMA86 Archive Format
 extern const BitInFormat Ppmd;      ///< PPMD Archive Format
+extern const BitInFormat Zstd;      ///< ZSTD Archive Format
 extern const BitInFormat Vhdx;      ///< VHDX Archive Format
 extern const BitInFormat COFF;      ///< COFF Archive Format
 extern const BitInFormat Ext;       ///< EXT Archive Format

diff --git a/src/bitformat.cpp b/src/bitformat.cpp
@@ -44,6 +44,7 @@ namespace BitFormat {
                              BitCompressionMethod::Lzma2,
                              FormatFeatures::CompressionLevel );
     const BitInFormat Ppmd( 0x0D );
+    const BitInFormat Zstd( 0x0E );
     const BitInFormat Vhdx( 0xC4 );
     const BitInFormat COFF( 0xC6 );
     const BitInFormat Ext( 0xC7 );

diff --git a/src/internal/formatdetect.cpp b/src/internal/formatdetect.cpp
@@ -184,6 +184,8 @@ auto find_format_by_extension( const tstring& extension ) -> const BitInFormat*
         case str_hash( BIT7Z_STRING( "z" ) ):
         case str_hash( BIT7Z_STRING( "taz" ) ):
             return &BitFormat::Z;
+        case str_hash( BIT7Z_STRING( "zst" ) ):
+            return &BitFormat::Zstd;
         default:
             return nullptr;
     }
@@ -239,6 +241,7 @@ auto find_format_by_signature( uint64_t signature ) noexcept -> const BitInForma
     constexpr auto kXarSignature = 0x78617221001C0000ULL; // xar! 0x00 0x1C
     constexpr auto kZSignature1 = 0x1F9D000000000000ULL; // 0x1F 0x9D
     constexpr auto kZSignature2 = 0x1FA0000000000000ULL; // 0x1F 0xA0
+    constexpr auto kZstdSignature = 0x28B52FFD00000000ULL;
 
     switch ( signature ) {
         case kRarSignature:
@@ -326,6 +329,8 @@ auto find_format_by_signature( uint64_t signature ) noexcept -> const BitInForma
         case kZSignature1: // 1F 9D
         case kZSignature2: // 1F A0
             return &BitFormat::Z;
+        case kZstdSignature:
+            return &BitFormat::Zstd;
         default:
             return nullptr;
     }