Box Backup 0.09 with a few tweeks

1 files changed, 123 insertions, 0 deletions

diff --git a/lib/common/ConversionString.cpp b/lib/common/ConversionString.cpp
new file mode 100644
index 00000000..9e237a77
--- /dev/null
+++ b/lib/common/ConversionString.cpp
@@ -0,0 +1,123 @@
+// --------------------------------------------------------------------------
+//
+// File
+//		Name:    ConversionString.cpp
+//		Purpose: Conversions to and from strings
+//		Created: 9/4/04
+//
+// --------------------------------------------------------------------------
+
+#include "Box.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <errno.h>
+
+#include "Conversion.h"
+#include "autogen_ConversionException.h"
+
+#include "MemLeakFindOn.h"
+
+// --------------------------------------------------------------------------
+//
+// Function
+//		Name:    BoxConvert::_ConvertStringToInt(const char *, int)
+//		Purpose: Convert from string to integer, with range checking.
+//				 Always does signed -- no point in unsigned as C++ type checking
+//				 isn't up to handling it properly.
+//				 If a null pointer is passed in, then returns 0.
+//		Created: 9/4/04
+//
+// --------------------------------------------------------------------------
+int32_t BoxConvert::_ConvertStringToInt(const char *pString, int Size)
+{
+	// Handle null strings gracefully.
+	if(pString == 0)
+	{
+		return 0;
+	}
+
+	// Check for initial validity
+	if(*pString == '\0')
+	{
+		THROW_EXCEPTION(ConversionException, CannotConvertEmptyStringToInt)
+	}
+	
+	// Convert.
+	char *numEnd = 0;
+	errno = 0;			// Some platforms don't reset it.
+	long r = ::strtol(pString, &numEnd, 0);
+
+	// Check that all the characters were used
+	if(*numEnd != '\0')
+	{
+		THROW_EXCEPTION(ConversionException, BadStringRepresentationOfInt)
+	}
+	
+	// Error check
+	if(r == 0 && errno == EINVAL)
+	{
+		THROW_EXCEPTION(ConversionException, BadStringRepresentationOfInt)
+	}
+
+	// Range check from strtol
+	if((r == LONG_MIN || r == LONG_MAX) && errno == ERANGE)
+	{
+		THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
+	}
+	
+	// Check range for size of integer
+	switch(Size)
+	{
+	case 32:
+		{
+			// No extra checking needed, if this assert holds true
+			ASSERT(sizeof(long) == sizeof(int32_t));
+		}
+		break;
+		
+	case 16:
+		{
+			if(r <= (0 - 0x7fff) || r > 0x7fff)
+			{
+				THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
+			}
+			break;
+		}
+	
+	case 8:
+		{
+			if(r <= (0 - 0x7f) || r > 0x7f)
+			{
+				THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
+			}
+			break;
+		}
+		
+	default:
+		{
+			THROW_EXCEPTION(ConversionException, BadIntSize)
+			break;
+		}
+	}
+	
+	// Return number
+	return r;
+}
+
+// --------------------------------------------------------------------------
+//
+// Function
+//		Name:    BoxConvert::_ConvertIntToString(std::string &, int32_t)
+//		Purpose: Convert signed interger to a string
+//		Created: 9/4/04
+//
+// --------------------------------------------------------------------------
+void BoxConvert::_ConvertIntToString(std::string &rTo, int32_t From)
+{
+	char text[64];	// size more than enough
+	::sprintf(text, "%d", From);
+	rTo = text;
+}
+