C++ nsACString::AppendInt方法代码示例

/**
 * Creates a key for use in the ShouldLoad cache.
 * Looks like: <uri>!<nsIContentPolicy::LOAD_TYPE>
 */
nsresult
CreateCacheKey_Internal(nsIURI* aContentLocation,
                        nsContentPolicyType aContentType,
                        nsACString& outCacheKey)
{
  if (!aContentLocation) {
    return NS_ERROR_FAILURE;
  }

  bool isDataScheme = false;
  nsresult rv = aContentLocation->SchemeIs("data", &isDataScheme);
  NS_ENSURE_SUCCESS(rv, rv);

  outCacheKey.Truncate();
  if (aContentType != nsIContentPolicy::TYPE_SCRIPT && isDataScheme) {
    // For non-script data: URI, use ("data:", aContentType) as the cache key.
    outCacheKey.Append(NS_LITERAL_CSTRING("data:"));
    outCacheKey.AppendInt(aContentType);
    return NS_OK;
  }

  nsAutoCString spec;
  rv = aContentLocation->GetSpec(spec);
  NS_ENSURE_SUCCESS(rv, rv);

  // Don't cache for a URI longer than the cutoff size.
  if (spec.Length() <= CSP_CACHE_URI_CUTOFF_SIZE) {
    outCacheKey.Append(spec);
    outCacheKey.Append(NS_LITERAL_CSTRING("!"));
    outCacheKey.AppendInt(aContentType);
  }

  return NS_OK;
}

nsresult
ChunkSet::Serialize(nsACString& aChunkStr)
{
  aChunkStr.Truncate();

  uint32_t i = 0;
  while (i < mChunks.Length()) {
    if (i != 0) {
      aChunkStr.Append(',');
    }
    aChunkStr.AppendInt((int32_t)mChunks[i]);

    uint32_t first = i;
    uint32_t last = first;
    i++;
    while (i < mChunks.Length() && (mChunks[i] == mChunks[i - 1] + 1 || mChunks[i] == mChunks[i - 1])) {
      last = i++;
    }

    if (last != first) {
      aChunkStr.Append('-');
      aChunkStr.AppendInt((int32_t)mChunks[last]);
    }
  }

  return NS_OK;
}

void
BuildAlternativeDataInfo(const char *aInfo, int64_t aOffset, nsACString &_retval)
{
  _retval.Truncate();
  _retval.AppendInt(kAltDataVersion);
  _retval.Append(';');
  _retval.AppendInt(aOffset);
  _retval.Append(',');
  _retval.Append(aInfo);
}

void
GeckoChildProcessHost::SetChildLogName(const char* varName, const char* origLogName,
                                       nsACString &buffer)
{
  // We currently have no portable way to launch child with environment
  // different than parent.  So temporarily change NSPR_LOG_FILE so child
  // inherits value we want it to have. (NSPR only looks at NSPR_LOG_FILE at
  // startup, so it's 'safe' to play with the parent's environment this way.)
  buffer.Assign(varName);

#ifdef XP_WIN
  // On Windows we must expand relative paths because sandboxing rules
  // bound only to full paths.  fopen fowards to NtCreateFile which checks
  // the path against the sanboxing rules as passed to fopen (left relative).
  char absPath[MAX_PATH + 2];
  if (_fullpath(absPath, origLogName, sizeof(absPath))) {
    buffer.Append(absPath);
  } else
#endif
  {
    buffer.Append(origLogName);
  }

  // Append child-specific postfix to name
  buffer.AppendLiteral(".child-");
  buffer.AppendInt(mChildCounter);

  // Passing temporary to PR_SetEnv is ok here if we keep the temporary
  // for the time we launch the sub-process.  It's copied to the new
  // environment.
  PR_SetEnv(buffer.BeginReading());
}

nsresult getStatus(nsACString& desc)
{
  if(!gStatusReportProgress)
    desc.AssignLiteral("Init");
  else {
    desc.AssignLiteral("Running: There are ");
    desc.AppendInt(gNumReporters);
    desc.AppendLiteral(" reporters");
  }
  return NS_OK;
}

nsresult
nsDOMStorageDBWrapper::CreateQuotaDBKey(nsIPrincipal* aPrincipal,
                                        nsACString& aKey)
{
  nsresult rv;

  nsAutoCString subdomainsDBKey;
  nsCOMPtr<nsIEffectiveTLDService> eTLDService(do_GetService(
    NS_EFFECTIVETLDSERVICE_CONTRACTID, &rv));
  NS_ENSURE_SUCCESS(rv, rv);

  nsCOMPtr<nsIURI> uri;
  rv = aPrincipal->GetURI(getter_AddRefs(uri));
  NS_ENSURE_SUCCESS(rv, rv);
  NS_ENSURE_TRUE(uri, NS_ERROR_UNEXPECTED);

  nsAutoCString eTLDplusOne;
  rv = eTLDService->GetBaseDomain(uri, 0, eTLDplusOne);
  if (NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS == rv) {
    // XXX bug 357323 - what to do for localhost/file exactly?
    rv = uri->GetAsciiHost(eTLDplusOne);
  }
  NS_ENSURE_SUCCESS(rv, rv);

  CreateReversedDomain(eTLDplusOne, subdomainsDBKey);

  uint32_t appId;
  rv = aPrincipal->GetAppId(&appId);
  NS_ENSURE_SUCCESS(rv, rv);

  bool isInBrowserElement;
  rv = aPrincipal->GetIsInBrowserElement(&isInBrowserElement);
  NS_ENSURE_SUCCESS(rv, rv);

  if (appId == nsIScriptSecurityManager::NO_APP_ID && !isInBrowserElement) {
    aKey.Assign(subdomainsDBKey);
    return NS_OK;
  }

  aKey.Truncate();
  aKey.AppendInt(appId);
  aKey.Append(NS_LITERAL_CSTRING(":") + (isInBrowserElement ?
              NS_LITERAL_CSTRING("t") : NS_LITERAL_CSTRING("f")) +
              NS_LITERAL_CSTRING(":") + subdomainsDBKey);

  return NS_OK;
}

void
GeckoChildProcessHost::SetChildLogName(const char* varName, const char* origLogName,
                                       nsACString &buffer)
{
  // We currently have no portable way to launch child with environment
  // different than parent.  So temporarily change NSPR_LOG_FILE so child
  // inherits value we want it to have. (NSPR only looks at NSPR_LOG_FILE at
  // startup, so it's 'safe' to play with the parent's environment this way.)
  buffer.Assign(varName);
  buffer.Append(origLogName);

  // Append child-specific postfix to name
  buffer.AppendLiteral(".child-");
  buffer.AppendInt(mChildCounter);

  // Passing temporary to PR_SetEnv is ok here if we keep the temporary
  // for the time we launch the sub-process.  It's copied to the new
  // environment.
  PR_SetEnv(buffer.BeginReading());
}

NS_IMETHODIMP
RustURL::GetHostPort(nsACString & aHostPort)
{
  nsresult rv = (nsresult) rusturl_get_host(mURL.get(), &aHostPort);
  if (NS_FAILED(rv)) {
    return rv;
  }

  int32_t port;
  rv = GetPort(&port);
  if (NS_FAILED(rv)) {
    return rv;
  }
  if (port >= 0) {
    aHostPort.Append(':');
    aHostPort.AppendInt(port);
  }

  return NS_OK;
}

void
GetJarPrefix(uint32_t aAppId, bool aInMozBrowser, nsACString& aJarPrefix)
{
  MOZ_ASSERT(aAppId != nsIScriptSecurityManager::UNKNOWN_APP_ID);

  if (aAppId == nsIScriptSecurityManager::UNKNOWN_APP_ID) {
    aAppId = nsIScriptSecurityManager::NO_APP_ID;
  }

  aJarPrefix.Truncate();

  // Fallback.
  if (aAppId == nsIScriptSecurityManager::NO_APP_ID && !aInMozBrowser) {
    return;
  }

  // aJarPrefix = appId + "+" + { 't', 'f' } + "+";
  aJarPrefix.AppendInt(aAppId);
  aJarPrefix.Append('+');
  aJarPrefix.Append(aInMozBrowser ? 't' : 'f');
  aJarPrefix.Append('+');

  return;
}

nsresult
nsDOMStorageDBWrapper::CreateScopeDBKey(nsIPrincipal* aPrincipal,
                                        nsACString& aKey)
{
  nsCOMPtr<nsIURI> uri;
  nsresult rv = aPrincipal->GetURI(getter_AddRefs(uri));
  NS_ENSURE_SUCCESS(rv, rv);
  NS_ENSURE_TRUE(uri, NS_ERROR_UNEXPECTED);

  nsAutoCString domainScope;
  rv = uri->GetAsciiHost(domainScope);
  NS_ENSURE_SUCCESS(rv, rv);

  if (domainScope.IsEmpty()) {
    // About pages have an empty host but a valid path.  Since they are handled
    // internally by our own redirector, we can trust them and use path as key.
    // if file:/// protocol, let's make the exact directory the domain
    bool isScheme = false;
    if ((NS_SUCCEEDED(uri->SchemeIs("about", &isScheme)) && isScheme) ||
        (NS_SUCCEEDED(uri->SchemeIs("moz-safe-about", &isScheme)) && isScheme)) {
      rv = uri->GetPath(domainScope);
      NS_ENSURE_SUCCESS(rv, rv);
      // While the host is always canonicalized to lowercase, the path is not,
      // thus need to force the casing.
      ToLowerCase(domainScope);
    }
    else if (NS_SUCCEEDED(uri->SchemeIs("file", &isScheme)) && isScheme) {
      nsCOMPtr<nsIURL> url = do_QueryInterface(uri, &rv);
      NS_ENSURE_SUCCESS(rv, rv);
      rv = url->GetDirectory(domainScope);
      NS_ENSURE_SUCCESS(rv, rv);
    }
  }

  nsAutoCString key;

  rv = CreateReversedDomain(domainScope, key);
  NS_ENSURE_SUCCESS(rv, rv);

  nsAutoCString scheme;
  rv = uri->GetScheme(scheme);
  NS_ENSURE_SUCCESS(rv, rv);

  key.Append(NS_LITERAL_CSTRING(":") + scheme);

  int32_t port = NS_GetRealPort(uri);
  if (port != -1) {
    key.Append(nsPrintfCString(":%d", port));
  }

  uint32_t appId;
  rv = aPrincipal->GetAppId(&appId);
  NS_ENSURE_SUCCESS(rv, rv);

  bool isInBrowserElement;
  rv = aPrincipal->GetIsInBrowserElement(&isInBrowserElement);
  NS_ENSURE_SUCCESS(rv, rv);

  if (appId == nsIScriptSecurityManager::NO_APP_ID && !isInBrowserElement) {
    aKey.Assign(key);
    return NS_OK;
  }

  aKey.Truncate();
  aKey.AppendInt(appId);
  aKey.Append(NS_LITERAL_CSTRING(":") + (isInBrowserElement ?
              NS_LITERAL_CSTRING("t") : NS_LITERAL_CSTRING("f")) +
              NS_LITERAL_CSTRING(":") + key);

  return NS_OK;
}