mozjs_sys 0.67.1

System crate for the Mozilla SpiderMonkey JavaScript engine.
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/* -*- 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/. */

/*
 * Portable safe sprintf code.
 *
 * Author: Kipp E.B. Hickman
 */

#include "js/Printf.h"

#include "mozilla/Printf.h"

#include "js/AllocPolicy.h"

using namespace js;

typedef mozilla::SmprintfPolicyPointer<js::SystemAllocPolicy> JSSmprintfPointer;

JS_PUBLIC_API JS::UniqueChars JS_smprintf(const char* fmt, ...) {
  va_list ap;
  va_start(ap, fmt);
  JSSmprintfPointer result = mozilla::Vsmprintf<js::SystemAllocPolicy>(fmt, ap);
  va_end(ap);
  return JS::UniqueChars(result.release());
}

JS_PUBLIC_API JS::UniqueChars JS_sprintf_append(JS::UniqueChars&& last,
                                                const char* fmt, ...) {
  va_list ap;
  va_start(ap, fmt);
  JSSmprintfPointer lastPtr(last.release());
  JSSmprintfPointer result = mozilla::VsmprintfAppend<js::SystemAllocPolicy>(
      std::move(lastPtr), fmt, ap);
  va_end(ap);
  return JS::UniqueChars(result.release());
}

JS_PUBLIC_API JS::UniqueChars JS_vsmprintf(const char* fmt, va_list ap) {
  return JS::UniqueChars(
      mozilla::Vsmprintf<js::SystemAllocPolicy>(fmt, ap).release());
}

JS_PUBLIC_API JS::UniqueChars JS_vsprintf_append(JS::UniqueChars&& last,
                                                 const char* fmt, va_list ap) {
  JSSmprintfPointer lastPtr(last.release());
  return JS::UniqueChars(mozilla::VsmprintfAppend<js::SystemAllocPolicy>(
                             std::move(lastPtr), fmt, ap)
                             .release());
}