Utility class to format integer values.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33905 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/debugger/util/IntegerFormatter.cpp

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2009, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include "IntegerFormatter.h"
+
+#include <stdio.h>
+
+#include <TypeConstants.h>
+
+
+/*static*/ bool
+IntegerFormatter::FormatValue(const BVariant& value, integer_format format,
+	char* buffer, size_t bufferSize)
+{
+	bool isSigned;
+	if (!value.IsInteger(&isSigned))
+		return false;
+
+	if (format == INTEGER_FORMAT_DEFAULT)
+		format = isSigned ? INTEGER_FORMAT_SIGNED : INTEGER_FORMAT_UNSIGNED;
+
+	if (format == INTEGER_FORMAT_HEX_DEFAULT) {
+		switch (value.Type()) {
+			case B_INT8_TYPE:
+			case B_UINT8_TYPE:
+				format = INTEGER_FORMAT_HEX_8;
+				break;
+			case B_INT16_TYPE:
+			case B_UINT16_TYPE:
+				format = INTEGER_FORMAT_HEX_16;
+				break;
+			case B_INT32_TYPE:
+			case B_UINT32_TYPE:
+				format = INTEGER_FORMAT_HEX_32;
+				break;
+			case B_INT64_TYPE:
+			case B_UINT64_TYPE:
+			default:
+				format = INTEGER_FORMAT_HEX_64;
+				break;
+		}
+	}
+
+	// format the value
+	switch (format) {
+		case INTEGER_FORMAT_SIGNED:
+			snprintf(buffer, bufferSize, "%lld", value.ToInt64());
+			break;
+		case INTEGER_FORMAT_UNSIGNED:
+			snprintf(buffer, bufferSize, "%llu", value.ToUInt64());
+			break;
+		case INTEGER_FORMAT_HEX_8:
+			snprintf(buffer, bufferSize, "%#x", (uint8)value.ToUInt64());
+			break;
+		case INTEGER_FORMAT_HEX_16:
+			snprintf(buffer, bufferSize, "%#x", (uint16)value.ToUInt64());
+			break;
+		case INTEGER_FORMAT_HEX_32:
+			snprintf(buffer, bufferSize, "%#lx", (uint32)value.ToUInt64());
+			break;
+		case INTEGER_FORMAT_HEX_64:
+		case INTEGER_FORMAT_HEX_DEFAULT:
+		default:
+			snprintf(buffer, bufferSize, "%#llx", value.ToUInt64());
+			break;
+	}
+
+	return true;
+}

src/apps/debugger/util/IntegerFormatter.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2009, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef INTEGER_FORMATTER_H
+#define INTEGER_FORMATTER_H
+
+
+#include <Variant.h>
+
+
+enum integer_format {
+	INTEGER_FORMAT_DEFAULT		= 0,
+	INTEGER_FORMAT_SIGNED		= 1,
+	INTEGER_FORMAT_UNSIGNED		= 2,
+	INTEGER_FORMAT_HEX_DEFAULT	= 3,
+	INTEGER_FORMAT_HEX_8		= 8,
+	INTEGER_FORMAT_HEX_16		= 16,
+	INTEGER_FORMAT_HEX_32	 	= 32,
+	INTEGER_FORMAT_HEX_64		= 64
+};
+
+
+class IntegerFormatter {
+public:
+	static	bool				FormatValue(const BVariant& value,
+									integer_format format, char* buffer,
+									size_t bufferSize);
+};
+
+
+#endif	// INTEGER_FORMATTER_H