Move base to DEPS

base/strings/stringprintf.cc

-// Copyright 2013 The Chromium 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 "base/strings/stringprintf.h"
-
-#include <errno.h>
-
-#include <vector>
-
-#include "base/scoped_clear_errno.h"
-#include "base/strings/string_util.h"
-#include "base/strings/utf_string_conversions.h"
-
-namespace base {
-
-namespace {
-
-// Overloaded wrappers around vsnprintf and vswprintf. The buf_size parameter
-// is the size of the buffer. These return the number of characters in the
-// formatted string excluding the NUL terminator. If the buffer is not
-// large enough to accommodate the formatted string without truncation, they
-// return the number of characters that would be in the fully-formatted string
-// (vsnprintf, and vswprintf on Windows), or -1 (vswprintf on POSIX platforms).
-inline int vsnprintfT(char* buffer,
-                      size_t buf_size,
-                      const char* format,
-                      va_list argptr) {
-  return base::vsnprintf(buffer, buf_size, format, argptr);
-}
-
-#if defined(OS_WIN)
-inline int vsnprintfT(wchar_t* buffer,
-                      size_t buf_size,
-                      const wchar_t* format,
-                      va_list argptr) {
-  return base::vswprintf(buffer, buf_size, format, argptr);
-}
-#endif
-
-// Templatized backend for StringPrintF/StringAppendF. This does not finalize
-// the va_list, the caller is expected to do that.
-template <class StringType>
-static void StringAppendVT(StringType* dst,
-                           const typename StringType::value_type* format,
-                           va_list ap) {
-  // First try with a small fixed size buffer.
-  // This buffer size should be kept in sync with StringUtilTest.GrowBoundary
-  // and StringUtilTest.StringPrintfBounds.
-  typename StringType::value_type stack_buf[1024];
-
-  va_list ap_copy;
-  va_copy(ap_copy, ap);
-
-#if !defined(OS_WIN)
-  ScopedClearErrno clear_errno;
-#endif
-  int result = vsnprintfT(stack_buf, arraysize(stack_buf), format, ap_copy);
-  va_end(ap_copy);
-
-  if (result >= 0 && result < static_cast<int>(arraysize(stack_buf))) {
-    // It fit.
-    dst->append(stack_buf, result);
-    return;
-  }
-
-  // Repeatedly increase buffer size until it fits.
-  int mem_length = arraysize(stack_buf);
-  while (true) {
-    if (result < 0) {
-#if defined(OS_WIN)
-      // On Windows, vsnprintfT always returns the number of characters in a
-      // fully-formatted string, so if we reach this point, something else is
-      // wrong and no amount of buffer-doubling is going to fix it.
-      return;
-#else
-      if (errno != 0 && errno != EOVERFLOW)
-        return;
-      // Try doubling the buffer size.
-      mem_length *= 2;
-#endif
-    } else {
-      // We need exactly "result + 1" characters.
-      mem_length = result + 1;
-    }
-
-    if (mem_length > 32 * 1024 * 1024) {
-      // That should be plenty, don't try anything larger.  This protects
-      // against huge allocations when using vsnprintfT implementations that
-      // return -1 for reasons other than overflow without setting errno.
-      DLOG(WARNING) << "Unable to printf the requested string due to size.";
-      return;
-    }
-
-    std::vector<typename StringType::value_type> mem_buf(mem_length);
-
-    // NOTE: You can only use a va_list once.  Since we're in a while loop, we
-    // need to make a new copy each time so we don't use up the original.
-    va_copy(ap_copy, ap);
-    result = vsnprintfT(&mem_buf[0], mem_length, format, ap_copy);
-    va_end(ap_copy);
-
-    if ((result >= 0) && (result < mem_length)) {
-      // It fit.
-      dst->append(&mem_buf[0], result);
-      return;
-    }
-  }
-}
-
-}  // namespace
-
-std::string StringPrintf(const char* format, ...) {
-  va_list ap;
-  va_start(ap, format);
-  std::string result;
-  StringAppendV(&result, format, ap);
-  va_end(ap);
-  return result;
-}
-
-#if defined(OS_WIN)
-std::wstring StringPrintf(const wchar_t* format, ...) {
-  va_list ap;
-  va_start(ap, format);
-  std::wstring result;
-  StringAppendV(&result, format, ap);
-  va_end(ap);
-  return result;
-}
-#endif
-
-std::string StringPrintV(const char* format, va_list ap) {
-  std::string result;
-  StringAppendV(&result, format, ap);
-  return result;
-}
-
-const std::string& SStringPrintf(std::string* dst, const char* format, ...) {
-  va_list ap;
-  va_start(ap, format);
-  dst->clear();
-  StringAppendV(dst, format, ap);
-  va_end(ap);
-  return *dst;
-}
-
-#if defined(OS_WIN)
-const std::wstring& SStringPrintf(std::wstring* dst,
-                                  const wchar_t* format, ...) {
-  va_list ap;
-  va_start(ap, format);
-  dst->clear();
-  StringAppendV(dst, format, ap);
-  va_end(ap);
-  return *dst;
-}
-#endif
-
-void StringAppendF(std::string* dst, const char* format, ...) {
-  va_list ap;
-  va_start(ap, format);
-  StringAppendV(dst, format, ap);
-  va_end(ap);
-}
-
-#if defined(OS_WIN)
-void StringAppendF(std::wstring* dst, const wchar_t* format, ...) {
-  va_list ap;
-  va_start(ap, format);
-  StringAppendV(dst, format, ap);
-  va_end(ap);
-}
-#endif
-
-void StringAppendV(std::string* dst, const char* format, va_list ap) {
-  StringAppendVT(dst, format, ap);
-}
-
-#if defined(OS_WIN)
-void StringAppendV(std::wstring* dst, const wchar_t* format, va_list ap) {
-  StringAppendVT(dst, format, ap);
-}
-#endif
-
-}  // namespace base