1 files changed, 52 insertions, 0 deletions
diff --git a/gfx/angle/src/common/angleutils.cpp b/gfx/angle/src/common/angleutils.cpp
new file mode 100755
index 000000000..7099c2173
--- /dev/null
+++ b/gfx/angle/src/common/angleutils.cpp
@@ -0,0 +1,52 @@
+//
+// Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+#include "common/angleutils.h"
+#include "common/debug.h"
+
+#include <stdio.h>
+
+#include <limits>
+#include <vector>
+
+namespace angle
+{
+const uintptr_t DirtyPointer = std::numeric_limits<uintptr_t>::max();
+}
+
+size_t FormatStringIntoVector(const char *fmt, va_list vararg, std::vector<char>& outBuffer)
+{
+    // Attempt to just print to the current buffer
+    int len = vsnprintf(&(outBuffer.front()), outBuffer.size(), fmt, vararg);
+    if (len < 0 || static_cast<size_t>(len) >= outBuffer.size())
+    {
+        // Buffer was not large enough, calculate the required size and resize the buffer
+        len = vsnprintf(NULL, 0, fmt, vararg);
+        outBuffer.resize(len + 1);
+
+        // Print again
+        len = vsnprintf(&(outBuffer.front()), outBuffer.size(), fmt, vararg);
+    }
+    ASSERT(len >= 0);
+    return static_cast<size_t>(len);
+}
+
+std::string FormatString(const char *fmt, va_list vararg)
+{
+    static std::vector<char> buffer(512);
+
+    size_t len = FormatStringIntoVector(fmt, vararg, buffer);
+    return std::string(&buffer[0], len);
+}
+
+std::string FormatString(const char *fmt, ...)
+{
+    va_list vararg;
+    va_start(vararg, fmt);
+    std::string result = FormatString(fmt, vararg);
+    va_end(vararg);
+    return result;
+}