deskflow/src/lib/platform/XWindowsClipboardUTF8Converter.cpp

/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2012-2016 Symless Ltd.
 * Copyright (C) 2002 Chris Schoeneman
 *
 * This package is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * found in the file LICENSE that should have accompanied this file.
 *
 * This package is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "platform/XWindowsClipboardUTF8Converter.h"

#include <algorithm>

//
// XWindowsClipboardUTF8Converter
//

XWindowsClipboardUTF8Converter::XWindowsClipboardUTF8Converter(
    Display *display, const char *name, bool normalize)
    : m_atom(XInternAtom(display, name, False)),
      m_normalize(normalize) {
  // do nothing
}

XWindowsClipboardUTF8Converter::~XWindowsClipboardUTF8Converter() {
  // do nothing
}

IClipboard::EFormat XWindowsClipboardUTF8Converter::getFormat() const {
  return IClipboard::kText;
}

Atom XWindowsClipboardUTF8Converter::getAtom() const { return m_atom; }

int XWindowsClipboardUTF8Converter::getDataSize() const { return 8; }

static bool isCR(char ch) { return (ch == '\r'); }

String
XWindowsClipboardUTF8Converter::fromIClipboard(const String &data) const {
  return data;
}

String XWindowsClipboardUTF8Converter::toIClipboard(const String &data) const {
  // https://bugzilla.mozilla.org/show_bug.cgi?id=1547595
  // GTK normalizes the clipboard's line endings to CRLF (\r\n) internally.
  // When sending the raw data to other systems, like Windows, where \n is
  // converted to \r\n we end up with \r\r\n, resulting in double lines when
  // pasting.
  //
  // This seems to happen only when the clipboard format is
  // text/plain;charset=utf8 and not when it's UTF8_STRING.
  // When normalize clipboard is set, any \r present in the string is removed

  if (m_normalize) {
    String copy = data;

    copy.erase(std::remove_if(copy.begin(), copy.end(), isCR), copy.end());
    return copy;
  }

  return data;
}