js/src/util/Printf.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 /*
   8  * Portable safe sprintf code.
   9  *
  10  * Author: Kipp E.B. Hickman
  11  */
  12
  13 #include "js/Printf.h"
  14
  15 #include "mozilla/Printf.h"
  16
  17 #include "js/AllocPolicy.h"
  18
  19 using namespace js;
  20
  21 using JSSmprintfPointer = mozilla::SmprintfPolicyPointer<js::SystemAllocPolicy>;
  22
  23 JS_PUBLIC_API JS::UniqueChars JS_smprintf(const char* fmt, ...) {
  24   va_list ap;
  25   va_start(ap, fmt);
  26   JSSmprintfPointer result = mozilla::Vsmprintf<js::SystemAllocPolicy>(fmt, ap);
  27   va_end(ap);
  28   return JS::UniqueChars(result.release());
  29 }
  30
  31 JS_PUBLIC_API JS::UniqueChars JS_sprintf_append(JS::UniqueChars&& last,
  32                                                 const char* fmt, ...) {
  33   va_list ap;
  34   va_start(ap, fmt);
  35   JSSmprintfPointer lastPtr(last.release());
  36   JSSmprintfPointer result = mozilla::VsmprintfAppend<js::SystemAllocPolicy>(
  37       std::move(lastPtr), fmt, ap);
  38   va_end(ap);
  39   return JS::UniqueChars(result.release());
  40 }
  41
  42 JS_PUBLIC_API JS::UniqueChars JS_vsmprintf(const char* fmt, va_list ap) {
  43   return JS::UniqueChars(
  44       mozilla::Vsmprintf<js::SystemAllocPolicy>(fmt, ap).release());
  45 }
  46
  47 JS_PUBLIC_API JS::UniqueChars JS_vsprintf_append(JS::UniqueChars&& last,
  48                                                  const char* fmt, va_list ap) {
  49   JSSmprintfPointer lastPtr(last.release());
  50   return JS::UniqueChars(mozilla::VsmprintfAppend<js::SystemAllocPolicy>(
  51                              std::move(lastPtr), fmt, ap)
  52                              .release());
  53 }