Add Pattern::Pattern(const char* bin, const char* mask)

calamity-inc · Dec 10, 2024 · 842a2b8 · 842a2b8
1 parent c43288b
commit 842a2b8
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Showing 2 changed files with 18 additions and 0 deletions.
diff --git a/soup/Pattern.cpp b/soup/Pattern.cpp
@@ -91,6 +91,23 @@ NAMESPACE_SOUP
 		computeMostUniqueByteIndex();
 	}
 
+	Pattern::Pattern(const char* bin, const char* mask)
+	{
+		const size_t len = strlen(mask);
+		bytes.reserve(len);
+		for (size_t i = 0; i != len; ++i)
+		{
+			if (mask[i] == '?')
+			{
+				bytes.emplace_back(std::nullopt);
+			}
+			else // if (mask[i] == 'x')
+			{
+				bytes.emplace_back(reinterpret_cast<const uint8_t*>(bin)[i]);
+			}
+		}
+	}
+
 #if SOUP_X86 && SOUP_BITS == 64
 	// Stolen from https://github.com/0x1F9F1/mem/blob/master/include/mem/simd_scanner.h
 	static const uint8_t frequencies[256]

diff --git a/soup/Pattern.hpp b/soup/Pattern.hpp
@@ -22,6 +22,7 @@ NAMESPACE_SOUP
 		Pattern(const CompiletimePatternWithOptBytesBase& sig);
 		Pattern(const std::string& str);
 		Pattern(const char* str, size_t len);
+		Pattern(const char* bin, const char* mask);
 	private:
 		void computeMostUniqueByteIndex();