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/*
* Copyright 2020 The WebRTC 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 in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_base/strings/string_format.h"
#include <cstdarg>
#include <cstdio>
#include <string>
#include "rtc_base/checks.h"
namespace webrtc {
namespace {
// This is an arbitrary limitation that can be changed if necessary, or removed
// if someone has the time and inclination to replicate the fancy logic from
// Chromium's base::StringPrinf().
constexpr int kMaxSize = 512;
} // namespace
std::string StringFormat(const char* fmt, ...) {
char buffer[kMaxSize];
va_list args;
va_start(args, fmt);
int result = vsnprintf(buffer, kMaxSize, fmt, args);
va_end(args);
RTC_DCHECK_GE(result, 0) << "ERROR: vsnprintf() failed with error " << result;
RTC_DCHECK_LT(result, kMaxSize)
<< "WARNING: string was truncated from " << result << " to "
<< (kMaxSize - 1) << " characters";
return std::string(buffer);
}
} // namespace webrtc
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