Added `::to_string_hex()`.

Signed-off-by: Toni Uhlig <matzeton@googlemail.com>

3 files changed, 56 insertions, 1 deletions

diff --git a/CRT/eastl_compat.cpp b/CRT/eastl_compat.cpp
index cc2df45..e252f5f 100644
--- a/CRT/eastl_compat.cpp
+++ b/CRT/eastl_compat.cpp
@@ -123,6 +123,50 @@ eastl::string to_string(double value)
         return "";
 }
 
+template <typename T>
+static eastl::string to_string_hex(T w, size_t hex_len = sizeof(T) << 1)
+{
+    static const char * const digits = "0123456789ABCDEF";
+    const size_t len = sizeof(T) << 1;
+
+    if (hex_len < len)
+        hex_len = len;
+    eastl::string rc(hex_len, '0');
+    for (size_t i = hex_len - len, j = (hex_len - 1) * 4; i < hex_len; ++i, j -= 4)
+        rc[i] = digits[(w >> j) & 0x0f];
+    return rc;
+}
+
+eastl::string to_string_hex(int value, size_t fill_width)
+{
+    return to_string_hex<int>(value, fill_width);
+}
+
+eastl::string to_string_hex(long value, size_t fill_width)
+{
+    return to_string_hex<long>(value, fill_width);
+}
+
+eastl::string to_string_hex(long long value, size_t fill_width)
+{
+    return to_string_hex<long long>(value, fill_width);
+}
+
+eastl::string to_string_hex(unsigned int value, size_t fill_width)
+{
+    return to_string_hex<unsigned int>(value, fill_width);
+}
+
+eastl::string to_string_hex(unsigned long int value, size_t fill_width)
+{
+    return to_string_hex<unsigned long int>(value, fill_width);
+}
+
+eastl::string to_string_hex(unsigned long long int value, size_t fill_width)
+{
+    return to_string_hex<unsigned long long int>(value, fill_width);
+}
+
 #ifndef NATIVE
 eastl::string from_unicode(wchar_t * wstr, unsigned short wlen, unsigned short wmax)
 {
@@ -133,7 +177,8 @@ eastl::string from_unicode(wchar_t * wstr, unsigned short wlen, unsigned short w
     unicode.Length = wlen;
     unicode.MaximumLength = (wmax > 0 ? wmax : wlen);
 
-    if (NT_SUCCESS(RtlUnicodeStringToAnsiString(&ansi, &unicode, TRUE))) {
+    if (NT_SUCCESS(RtlUnicodeStringToAnsiString(&ansi, &unicode, TRUE)))
+    {
         eastl::string result(ansi.Buffer, ansi.Length);
         RtlFreeAnsiString(&ansi);
         return result;
diff --git a/CRT/eastl_compat.hpp b/CRT/eastl_compat.hpp
index 442dc03..2459e75 100644
--- a/CRT/eastl_compat.hpp
+++ b/CRT/eastl_compat.hpp
@@ -12,6 +12,13 @@ eastl::string to_string(unsigned long long int value);
 eastl::string to_string(float value);
 eastl::string to_string(double value);
 
+eastl::string to_string_hex(int value, size_t fill_width = 0);
+eastl::string to_string_hex(long value, size_t fill_width = 0);
+eastl::string to_string_hex(long long value, size_t fill_width = 0);
+eastl::string to_string_hex(unsigned int value, size_t fill_width = 0);
+eastl::string to_string_hex(unsigned long int value, size_t fill_width = 0);
+eastl::string to_string_hex(unsigned long long int value, size_t fill_width = 0);
+
 #ifndef NATIVE
 eastl::string from_unicode(wchar_t * wstr, unsigned short wlen, unsigned short wmax = 0);
 #endif
diff --git a/examples/dpp-example-cplusplus.cpp b/examples/dpp-example-cplusplus.cpp
index fd07133..215c59c 100644
--- a/examples/dpp-example-cplusplus.cpp
+++ b/examples/dpp-example-cplusplus.cpp
@@ -46,6 +46,9 @@ public:
         DbgPrint("Value 1337f to String: %s\n", number_f.c_str());
         const auto & number_lf = ::to_string(1337.1337);
         DbgPrint("Value 1337lf to String: %s\n", number_lf.c_str());
+
+        DbgPrint("Value 0x00000000DEADBEEF to Hex String: 0x%s\n", ::to_string_hex(0xdeadbeef, 16));
+        DbgPrint("Value 0xDEADC0DEDEADBEEF to Hex String: 0x%s\n", ::to_string_hex(0xdeadc0dedeadbeef));
     }
 };
 static TestSmth * cdtor_test;