C++ nsCString::AppendLiteral方法代码示例

static void
HexDump(uint32_t *state, const char *buf, int32_t n, nsCString &result)
{
  char temp[16];

  const unsigned char *p;
  while (n) {
    SprintfLiteral(temp, "%08x:  ", *state);
    result.Append(temp);
    *state += HEXDUMP_MAX_ROWS;

    p = (const unsigned char *) buf;

    int32_t i, row_max = std::min(HEXDUMP_MAX_ROWS, n);

    // print hex codes:
    for (i = 0; i < row_max; ++i) {
      SprintfLiteral(temp, "%02x  ", *p++);
      result.Append(temp);
    }
    for (i = row_max; i < HEXDUMP_MAX_ROWS; ++i) {
      result.AppendLiteral("    ");
    }

    // print ASCII glyphs if possible:
    p = (const unsigned char *) buf;
    for (i = 0; i < row_max; ++i, ++p) {
      switch (*p) {
      case '<':
        result.AppendLiteral("&lt;");
        break;
      case '>':
        result.AppendLiteral("&gt;");
        break;
      case '&':
        result.AppendLiteral("&amp;");
        break;
      default:
        if (*p < 0x7F && *p > 0x1F) {
          result.Append(*p);
        } else {
          result.Append('.');
        }
      }
    }

    result.Append('\n');

    buf += row_max;
    n -= row_max;
  }
}

/**
 * Create list of infos about objects in opened directory
 * Return: NS_OK when list obtained, otherwise error code according
 * to failed operation.
 */
nsresult
nsGIOInputStream::DoOpenDirectory()
{
  GError *error = nullptr;

  GFileEnumerator *f_enum = g_file_enumerate_children(mHandle,
                                                      "standard::*,time::*",
                                                      G_FILE_QUERY_INFO_NONE,
                                                      nullptr,
                                                      &error);
  if (!f_enum) {
    nsresult rv = MapGIOResult(error);
    g_warning("Cannot read from directory: %s", error->message);
    g_error_free(error);
    return rv;
  }
  // fill list of file infos
  GFileInfo *info = g_file_enumerator_next_file(f_enum, nullptr, &error);
  while (info) {
    mDirList = g_list_append(mDirList, info);
    info = g_file_enumerator_next_file(f_enum, nullptr, &error);
  }
  g_object_unref(f_enum);
  if (error) {
    g_warning("Error reading directory content: %s", error->message);
    nsresult rv = MapGIOResult(error);
    g_error_free(error);
    return rv;
  }
  mDirOpen = true;

  // Sort list of file infos by using FileInfoComparator function
  mDirList = g_list_sort(mDirList, FileInfoComparator);
  mDirListPtr = mDirList;

  // Write base URL (make sure it ends with a '/')
  mDirBuf.AppendLiteral("300: ");
  mDirBuf.Append(mSpec);
  if (mSpec.get()[mSpec.Length() - 1] != '/')
    mDirBuf.Append('/');
  mDirBuf.Append('\n');

  // Write column names
  mDirBuf.AppendLiteral("200: filename content-length last-modified file-type\n");

  // Write charset (assume UTF-8)
  // XXX is this correct?
  mDirBuf.AppendLiteral("301: UTF-8\n");
  SetContentTypeOfChannel(APPLICATION_HTTP_INDEX_FORMAT);
  return NS_OK;
}

nsresult nsVCardAddress::ReadRecord(
    nsILineInputStream *aLineStream, nsCString &aRecord, bool *aMore)
{
  bool more = true;
  nsresult rv;
  nsCString line;

  aRecord.Truncate();

  // read BEGIN:VCARD
  rv = aLineStream->ReadLine(line, &more);
  if (!line.LowerCaseEqualsLiteral("begin:vcard")) {
    IMPORT_LOG0("*** Expected case-insensitive BEGIN:VCARD at start of vCard\n");
    rv = NS_ERROR_FAILURE;
    *aMore = more;
    return rv;
  }
  aRecord.Append(line);

  // read until END:VCARD
  do {
    if (!more) {
      IMPORT_LOG0("*** Expected case-insensitive END:VCARD at start of vCard\n");
      rv = NS_ERROR_FAILURE;
      break;
    }
    rv = aLineStream->ReadLine(line, &more);
    aRecord.AppendLiteral(MSG_LINEBREAK);
    aRecord.Append(line);
  } while (!line.LowerCaseEqualsLiteral("end:vcard"));

  *aMore = more;
  return rv;
}

NS_IMETHODIMP
nsMIMEInputStream::AddHeader(const char *aName, const char *aValue)
{
    NS_ENSURE_FALSE(mStartedReading, NS_ERROR_FAILURE);
    mHeaders.Append(aName);
    mHeaders.AppendLiteral(": ");
    mHeaders.Append(aValue);
    mHeaders.AppendLiteral("\r\n");

    // Just in case someone somehow uses our stream, lets at least
    // let the stream have a valid pointer. The stream will be properly
    // initialized in nsMIMEInputStream::InitStreams
    mHeaderStream->ShareData(mHeaders.get(), 0);

    return NS_OK;
}

/* static */ void
CommonElementAnimationData::LogAsyncAnimationFailure(nsCString& aMessage,
                                                     const nsIContent* aContent)
{
  if (aContent) {
    aMessage.AppendLiteral(" [");
    aMessage.Append(nsAtomCString(aContent->Tag()));

    nsIAtom* id = aContent->GetID();
    if (id) {
      aMessage.AppendLiteral(" with id '");
      aMessage.Append(nsAtomCString(aContent->GetID()));
      aMessage.AppendLiteral("'");
    }
    aMessage.AppendLiteral("]");
  }
  printf_stderr(aMessage.get());
}

static inline void
GetAuthKey(const char *scheme, const char *host, PRInt32 port, nsCString &key)
{
    key.Assign(scheme);
    key.AppendLiteral("://");
    key.Append(host);
    key.Append(':');
    key.AppendInt(port);
}

void nsIndexedToHTML::FormatSizeString(int64_t inSize, nsCString& outSizeString)
{
    outSizeString.Truncate();
    if (inSize > int64_t(0)) {
        // round up to the nearest Kilobyte
        int64_t  upperSize = (inSize + int64_t(1023)) / int64_t(1024);
        outSizeString.AppendInt(upperSize);
        outSizeString.AppendLiteral(" KB");
    }
}

/* static */ void
AnimationUtils::LogAsyncAnimationFailure(nsCString& aMessage,
                                         const nsIContent* aContent)
{
  if (aContent) {
    aMessage.AppendLiteral(" [");
    aMessage.Append(nsAtomCString(aContent->NodeInfo()->NameAtom()));

    nsIAtom* id = aContent->GetID();
    if (id) {
      aMessage.AppendLiteral(" with id '");
      aMessage.Append(nsAtomCString(aContent->GetID()));
      aMessage.Append('\'');
    }
    aMessage.Append(']');
  }
  aMessage.Append('\n');
  printf_stderr("%s", aMessage.get());
}

/**
 * If len is one, copies the first element of prefixes into serializedNamespaces.
 * If len > 1, copies len strings from prefixes into serializedNamespaces
 * as a comma-separated list of quoted strings.
 */
nsresult nsIMAPNamespaceList::SerializeNamespaces(char **prefixes, int len,
        nsCString &serializedNamespaces)
{
    if (len <= 0)
        return NS_OK;

    if (len == 1)
    {
        serializedNamespaces.Assign(prefixes[0]);
        return NS_OK;
    }

    for (int i = 0; i < len; i++)
    {
        if (i > 0)
            serializedNamespaces.AppendLiteral(",");

        serializedNamespaces.AppendLiteral("\"");
        serializedNamespaces.Append(prefixes[i]);
        serializedNamespaces.AppendLiteral("\"");
    }
    return NS_OK;
}

static inline void
GetAuthKey(const char *scheme, const char *host, int32_t port, uint32_t appId, bool inBrowserElement, nsCString &key)
{
    key.Truncate();
    key.AppendInt(appId);
    key.Append(':');
    key.AppendInt(inBrowserElement);
    key.Append(':');
    key.Append(scheme);
    key.AppendLiteral("://");
    key.Append(host);
    key.Append(':');
    key.AppendInt(port);
}

static void AppendNonAsciiToNCR(const nsAString& in, nsCString& out)
{
  nsAString::const_iterator start, end;

  in.BeginReading(start);
  in.EndReading(end);

  while (start != end) {
    if (*start < 128) {
      out.Append(*start++);
    } else {
      out.AppendLiteral("&#x");
      out.AppendInt(*start++, 16);
      out.Append(';');
    }
  }
}

nsresult nsTextAddress::ReadRecord(nsILineInputStream *aLineStream, nsCString &aLine, bool *aMore)
{
  bool more = true;
  PRUint32 numQuotes = 0;
  nsresult rv;
  nsCString line;

  // ensure aLine is empty
  aLine.Truncate();

  do {
    if (!more) {
      // No more, so we must have an incorrect file.
      rv = NS_ERROR_FAILURE;
    }
    else {
      // Read the line and append it
      rv = aLineStream->ReadLine(line, &more);
      if (NS_SUCCEEDED(rv)) {
        if (!aLine.IsEmpty())
          aLine.AppendLiteral(MSG_LINEBREAK);
        aLine.Append(line);

#ifdef MOZILLA_INTERNAL_API
        numQuotes += line.CountChar('"');
#else
        const char *begin, *end;
        line.BeginReading(&begin, &end);
        for (const char *current = begin; current < end; ++current) {
          if (*current == '"')
            ++numQuotes;
        }
#endif
      }
    }
    // Continue whilst everything is ok, and we have an odd number of quotes.
  } while (NS_SUCCEEDED(rv) && (numQuotes % 2 != 0));

  *aMore = more;
  return rv;
}

// set up the internal streams
void nsMIMEInputStream::InitStreams()
{
    NS_ASSERTION(!mStartedReading,
                 "Don't call initStreams twice without rewinding");

    mStartedReading = true;

    // We'll use the content-length stream to add the final \r\n
    if (mAddContentLength) {
        uint64_t cl = 0;
        if (mData) {
            mData->Available(&cl);
        }
        mContentLength.AssignLiteral("Content-Length: ");
        mContentLength.AppendInt(cl);
        mContentLength.AppendLiteral("\r\n\r\n");
    }
    else {
        mContentLength.AssignLiteral("\r\n");
    }
    mCLStream->ShareData(mContentLength.get(), -1);
    mHeaderStream->ShareData(mHeaders.get(), -1);
}

//.........这里部分代码省略.........
      g_warning("Cannot read from file: %s", error->message);
      g_error_free(error);
      return rv;
    }
    *aCountRead = bytes_read;
    mBytesRemaining -= *aCountRead;
    return NS_OK;
  }
  else if (mDirOpen) {
    // directory read
    while (aCount && rv != NS_BASE_STREAM_CLOSED)
    {
      // Copy data out of our buffer
      uint32_t bufLen = mDirBuf.Length() - mDirBufCursor;
      if (bufLen)
      {
        uint32_t n = std::min(bufLen, aCount);
        memcpy(aBuf, mDirBuf.get() + mDirBufCursor, n);
        *aCountRead += n;
        aBuf += n;
        aCount -= n;
        mDirBufCursor += n;
      }

      if (!mDirListPtr)    // Are we at the end of the directory list?
      {
        rv = NS_BASE_STREAM_CLOSED;
      }
      else if (aCount)     // Do we need more data?
      {
        GFileInfo *info = (GFileInfo *) mDirListPtr->data;

        // Prune '.' and '..' from directory listing.
        const char * fname = g_file_info_get_name(info);
        if (fname && fname[0] == '.' && 
            (fname[1] == '\0' || (fname[1] == '.' && fname[2] == '\0')))
        {
          mDirListPtr = mDirListPtr->next;
          continue;
        }

        mDirBuf.AssignLiteral("201: ");

        // The "filename" field
        nsCString escName;
        nsCOMPtr<nsINetUtil> nu = do_GetService(NS_NETUTIL_CONTRACTID);
        if (nu && fname) {
          nu->EscapeString(nsDependentCString(fname),
                           nsINetUtil::ESCAPE_URL_PATH, escName);

          mDirBuf.Append(escName);
          mDirBuf.Append(' ');
        }

        // The "content-length" field
        // XXX truncates size from 64-bit to 32-bit
        mDirBuf.AppendInt(int32_t(g_file_info_get_size(info)));
        mDirBuf.Append(' ');

        // The "last-modified" field
        //
        // NSPR promises: PRTime is compatible with time_t
        // we just need to convert from seconds to microseconds
        GTimeVal gtime;
        g_file_info_get_modification_time(info, &gtime);

        PRExplodedTime tm;
        PRTime pt = ((PRTime) gtime.tv_sec) * 1000000;
        PR_ExplodeTime(pt, PR_GMTParameters, &tm);
        {
          char buf[64];
          PR_FormatTimeUSEnglish(buf, sizeof(buf),
              "%a,%%20%d%%20%b%%20%Y%%20%H:%M:%S%%20GMT ", &tm);
          mDirBuf.Append(buf);
        }

        // The "file-type" field
        switch (g_file_info_get_file_type(info))
        {
          case G_FILE_TYPE_REGULAR:
            mDirBuf.AppendLiteral("FILE ");
            break;
          case G_FILE_TYPE_DIRECTORY:
            mDirBuf.AppendLiteral("DIRECTORY ");
            break;
          case G_FILE_TYPE_SYMBOLIC_LINK:
            mDirBuf.AppendLiteral("SYMBOLIC-LINK ");
            break;
          default:
            break;
        }
        mDirBuf.Append('\n');

        mDirBufCursor = 0;
        mDirListPtr = mDirListPtr->next;
      }
    }
  }
  return rv;
}

static void
HandleMailtoSubject(nsCString& aPath) {

  // Walk through the string and see if we have a subject already.
  bool hasSubject = false;
  bool hasParams = false;
  int32_t paramSep = aPath.FindChar('?');
  while (paramSep != kNotFound && paramSep < (int32_t)aPath.Length()) {
    hasParams = true;

    // Get the end of the name at the = op.  If it is *after* the next &,
    // assume that someone made a parameter without an = in it
    int32_t nameEnd = aPath.FindChar('=', paramSep+1);
    int32_t nextParamSep = aPath.FindChar('&', paramSep+1);
    if (nextParamSep == kNotFound) {
      nextParamSep = aPath.Length();
    }

    // If the = op is after the &, this parameter is a name without value.
    // If there is no = op, same thing.
    if (nameEnd == kNotFound || nextParamSep < nameEnd) {
      nameEnd = nextParamSep;
    }

    if (nameEnd != kNotFound) {
      if (Substring(aPath, paramSep+1, nameEnd-(paramSep+1)).
          LowerCaseEqualsLiteral("subject")) {
        hasSubject = true;
        break;
      }
    }

    paramSep = nextParamSep;
  }

  // If there is no subject, append a preformed subject to the mailto line
  if (!hasSubject) {
    if (hasParams) {
      aPath.Append('&');
    } else {
      aPath.Append('?');
    }

    // Get the default subject
    nsXPIDLString brandName;
    nsresult rv =
      nsContentUtils::GetLocalizedString(nsContentUtils::eBRAND_PROPERTIES,
                                         "brandShortName", brandName);
    if (NS_FAILED(rv))
      return;
    const char16_t *formatStrings[] = { brandName.get() };
    nsXPIDLString subjectStr;
    rv = nsContentUtils::FormatLocalizedString(
                                           nsContentUtils::eFORMS_PROPERTIES,
                                           "DefaultFormSubject",
                                           formatStrings,
                                           subjectStr);
    if (NS_FAILED(rv))
      return;
    aPath.AppendLiteral("subject=");
    nsCString subjectStrEscaped;
    aPath.Append(NS_EscapeURL(NS_ConvertUTF16toUTF8(subjectStr), esc_Query,
                              subjectStrEscaped));
  }
}