1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/LibOVR/Src/Kernel/OVR_String_FormatUtil.cpp	Wed Jan 14 06:51:16 2015 +0200
     1.3 @@ -0,0 +1,76 @@
     1.4 +/************************************************************************************
     1.5 +
     1.6 +Filename    :   OVR_String_FormatUtil.cpp
     1.7 +Content     :   String format functions.
     1.8 +Created     :   February 27, 2013
     1.9 +Notes       : 
    1.10 +
    1.11 +Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
    1.12 +
    1.13 +Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License"); 
    1.14 +you may not use the Oculus VR Rift SDK except in compliance with the License, 
    1.15 +which is provided at the time of installation or download, or which 
    1.16 +otherwise accompanies this software in either electronic or hard copy form.
    1.17 +
    1.18 +You may obtain a copy of the License at
    1.19 +
    1.20 +http://www.oculusvr.com/licenses/LICENSE-3.2 
    1.21 +
    1.22 +Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
    1.23 +distributed under the License is distributed on an "AS IS" BASIS,
    1.24 +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    1.25 +See the License for the specific language governing permissions and
    1.26 +limitations under the License.
    1.27 +
    1.28 +************************************************************************************/
    1.29 +
    1.30 +#include "OVR_String.h"
    1.31 +#include "OVR_Log.h"
    1.32 +
    1.33 +namespace OVR {
    1.34 +
    1.35 +void StringBuffer::AppendFormat(const char* format, ...)
    1.36 +{       
    1.37 +    va_list argList;
    1.38 +    char    buffer[512];
    1.39 +    char*   bufferUsed = buffer;
    1.40 +    char*   bufferAllocated = NULL;
    1.41 +
    1.42 +    va_start(argList, format);
    1.43 +
    1.44 +    #if !defined(OVR_CC_MSVC) // Non-Microsoft compilers require you to save a copy of the va_list.
    1.45 +        va_list argListSaved;
    1.46 +        va_copy(argListSaved, argList);
    1.47 +    #endif
    1.48 +
    1.49 +    int requiredStrlen = OVR_vsnprintf(bufferUsed, OVR_ARRAY_COUNT(buffer), format, argList); // The large majority of the time this will succeed.
    1.50 +
    1.51 +    if(requiredStrlen >= (int)sizeof(buffer)) // If the initial capacity wasn't enough...
    1.52 +    {
    1.53 +        bufferAllocated = (char*)OVR_ALLOC(sizeof(char) * (requiredStrlen + 1));
    1.54 +        bufferUsed = bufferAllocated;
    1.55 +        if(bufferAllocated)
    1.56 +        {
    1.57 +            #if !defined(OVR_CC_MSVC)
    1.58 +                va_end(argList);
    1.59 +                va_copy(argList, argListSaved);
    1.60 +            #endif
    1.61 +            requiredStrlen = OVR_vsnprintf(bufferAllocated, (requiredStrlen + 1), format, argList);
    1.62 +        }
    1.63 +    }
    1.64 +
    1.65 +    if(requiredStrlen < 0) // If there was a printf format error...
    1.66 +    {
    1.67 +        bufferUsed = NULL;
    1.68 +    }
    1.69 +
    1.70 +    va_end(argList);
    1.71 +
    1.72 +    if(bufferUsed)
    1.73 +        AppendString(bufferUsed);
    1.74 +
    1.75 +    if(bufferAllocated)
    1.76 +        OVR_FREE(bufferAllocated);
    1.77 +}
    1.78 +
    1.79 +} // OVR