webrtc/rtc_base/strings/string_format.cc
Philipp Hancke 168090b074 IWYU rtc_base
Done using
  find rtc_base/ -name "*.h" -o -name "*.cc"  | xargs tools_webrtc/iwyu/apply-include-cleaner
followed by
  tools_webrtc/gn_check_autofix.py
and git cl format.

Some of the more platform specific changes or changes that likely
require more attention were reverted manually. Those will be done
in smaller CLs.

Bug: webrtc:42226242
No-Iwyu: cross-platform issue in async_dns_resolver which will be handled in a follow-up.
Change-Id: I963a5bd4943a780006f5371b15bbdc6a9ec87bb1
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/396703
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Philipp Hancke <phancke@meta.com>
Cr-Commit-Position: refs/heads/main@{#44970}
2025-06-17 23:41:21 -07:00

44 lines
1.2 KiB
C++

/*
* 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