change pe_bliss parent directory from /drivers to /tools

1 files changed, 84 insertions, 0 deletions

diff --git a/tools/pe_bliss/utils.h b/tools/pe_bliss/utils.h
new file mode 100644
index 0000000000..c090121595
--- /dev/null
+++ b/tools/pe_bliss/utils.h
@@ -0,0 +1,84 @@
+#pragma once
+#include <istream>
+#include <string>
+#include "stdint_defs.h"
+#include "pe_structures.h"
+
+namespace pe_bliss
+{
+class pe_utils
+{
+public:
+	//Returns true if string "data" with maximum length "raw_length" is null-terminated
+	template<typename T>
+	static bool is_null_terminated(const T* data, size_t raw_length)
+	{
+		raw_length /= sizeof(T);
+		for(size_t l = 0; l < raw_length; l++)
+		{
+			if(data[l] == static_cast<T>(L'\0'))
+				return true;
+		}
+
+		return false;
+	}
+
+	//Helper template function to strip nullbytes in the end of string
+	template<typename T>
+	static void strip_nullbytes(std::basic_string<T>& str)
+	{
+		while(!*(str.end() - 1) && !str.empty())
+			str.erase(str.length() - 1);
+	}
+
+	//Helper function to determine if number is power of 2
+	template<typename T>
+	static inline bool is_power_of_2(T x)
+	{
+		return !(x & (x - 1));
+	}
+
+	//Helper function to align number down
+	template<typename T>
+	static inline T align_down(T x, uint32_t align)
+	{
+		return x & ~(static_cast<T>(align) - 1);
+	}
+
+	//Helper function to align number up
+	template<typename T>
+	static inline T align_up(T x, uint32_t align)
+	{
+		return (x & static_cast<T>(align - 1)) ? align_down(x, align) + static_cast<T>(align) : x;
+	}
+
+	//Returns true if sum of two unsigned integers is safe (no overflow occurs)
+	static inline bool is_sum_safe(uint32_t a, uint32_t b)
+	{
+		return a <= static_cast<uint32_t>(-1) - b;
+	}
+
+	//Two gigabytes value in bytes
+	static const uint32_t two_gb = 0x80000000;
+	static const uint32_t max_dword = 0xFFFFFFFF;
+	static const uint32_t max_word = 0x0000FFFF;
+	static const double log_2; //instead of using M_LOG2E
+
+	//Returns stream size
+	static std::streamoff get_file_size(std::istream& file);
+	
+#ifndef PE_BLISS_WINDOWS
+public:
+	static const u16string to_ucs2(const std::wstring& str);
+	static const std::wstring from_ucs2(const u16string& str);
+#endif
+
+private:
+	pe_utils();
+	pe_utils(pe_utils&);
+	pe_utils& operator=(const pe_utils&);
+};
+
+//Windows GUID comparison
+bool operator==(const pe_win::guid& guid1, const pe_win::guid& guid2);
+}