kc3-lang/angle/src/common/angleutils.cpp

Branch : - branch - main - tag -

• Show log

  Commit

• Author : Geoff Lang
  Date : 2014-11-20 15:15:01
  Hash : 2207213b
  Message : Move as many files as possible from common to libANGLE. BUG=angle:733 Change-Id: If01c91cd52ac5c2102276a9fdc4b68ebc13e47f9 Reviewed-on: https://chromium-review.googlesource.com/231850 Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

• src/common/angleutils.cpp

• //
  // 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 <vector>
  
  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;
  }