mfbt/Snprintf.h
author Nathan Froyd <froydnj@mozilla.com>
Sun, 18 Oct 2015 01:24:48 -0400
changeset 268184 e8c7dfe727cd970e2c3294934e2927b14143c205
parent 245509 bdb8d05f8870425176e12885c16f339439e2d3b0
child 303946 3f99486c6b0157f468e0bc76bdc2348daf158541
permissions -rw-r--r--
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* Polyfills snprintf() on platforms that don't provide it, and provides
 * related utilities. */

#ifndef mozilla_Snprintf_h_
#define mozilla_Snprintf_h_

#include <stddef.h>
#include <stdio.h>
#include <stdarg.h>

// Older MSVC versions do not provide snprintf(), but they do provide
// vsnprintf(), which has the same semantics except that if the number of
// characters written equals the buffer size, it does not write a null
// terminator, so we wrap it to do so.
#if defined(_MSC_VER) && _MSC_VER < 1900
#include "mozilla/Attributes.h"
MOZ_ALWAYS_INLINE int snprintf(char* buffer, size_t n, const char* format, ...)
{
  va_list args;
  va_start(args, format);
  int result = vsnprintf(buffer, n, format, args);
  va_end(args);
  buffer[n - 1] = '\0';
  return result;
}
#endif

// In addition, in C++ code, on all platforms, provide an snprintf_literal()
// function which uses template argument deduction to deduce the size of the
// buffer, avoiding the need for the user to pass it in explicitly.
#ifdef __cplusplus
template <size_t N>
int snprintf_literal(char (&buffer)[N], const char* format, ...)
{
  va_list args;
  va_start(args, format);
  int result = vsnprintf(buffer, N, format, args);
  va_end(args);
  buffer[N - 1] = '\0';
  return result;
}
#endif

#endif  /* mozilla_Snprintf_h_ */