| // |
| // 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 <vector> |
| |
| std::string FormatString(const char *fmt, va_list vararg) |
| { |
| static std::vector<char> buffer(512); |
| |
| // Attempt to just print to the current buffer |
| int len = vsnprintf(&buffer[0], buffer.size(), fmt, vararg); |
| if (len < 0 || static_cast<size_t>(len) >= buffer.size()) |
| { |
| // Buffer was not large enough, calculate the required size and resize the buffer |
| len = vsnprintf(NULL, 0, fmt, vararg); |
| buffer.resize(len + 1); |
| |
| // Print again |
| vsnprintf(&buffer[0], buffer.size(), fmt, vararg); |
| } |
| |
| return std::string(buffer.data(), 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; |
| } |