refactor: use std::string in place of String

basedon: https://github.com/debauchee/barrier/pull/709

src/apps/deskflow-client/MSWindowsClientTaskBarReceiver.cpp

@@ -211,7 +211,7 @@ void MSWindowsClientTaskBarReceiver::copyLog() const
 {
   if (m_logBuffer != NULL) {
     // collect log buffer
-    String data;
+    std::string data;
     for (BufferedLogOutputter::const_iterator index = m_logBuffer->begin(); index != m_logBuffer->end(); ++index) {
       data += *index;
       data += "\n";

src/apps/deskflow-server/MSWindowsServerTaskBarReceiver.cpp

@@ -238,7 +238,7 @@ void MSWindowsServerTaskBarReceiver::copyLog() const
 {
   if (m_logBuffer != NULL) {
     // collect log buffer
-    String data;
+    std::string data;
     for (BufferedLogOutputter::const_iterator index = m_logBuffer->begin(); index != m_logBuffer->end(); ++index) {
       data += *index;
       data += "\n";

src/lib/arch/IArchDaemon.h

@@ -18,8 +18,8 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "common/IInterface.h"
+#include <string>
 
 //! Interface for architecture dependent daemonizing
 /*!

src/lib/arch/IArchFile.h

@@ -18,7 +18,6 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "common/IInterface.h"
 #include "common/stdstring.h"
 
@@ -93,12 +92,12 @@ public:
   /*
   Returns the user's profile directory.
   */
-  virtual void setProfileDirectory(const String &s) = 0;
+  virtual void setProfileDirectory(const std::string &s) = 0;
 
   //@}
   //! Set the user's plugin directory
   /*
   Returns the user's plugin directory.
   */
-  virtual void setPluginDirectory(const String &s) = 0;
+  virtual void setPluginDirectory(const std::string &s) = 0;
 };

src/lib/arch/IArchTaskBarReceiver.h

@@ -18,9 +18,10 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "common/IInterface.h"
 
+#include <string>
+
 class IScreen;
 class INode;
 
@@ -91,7 +92,7 @@ public:
   */
   virtual std::string getToolTip() const = 0;
 
-  virtual void updateStatus(INode *, const String &errorMsg) = 0;
+  virtual void updateStatus(INode *, const std::string &errorMsg) = 0;
 
   virtual void cleanup()
   {

src/lib/arch/unix/ArchFileUnix.cpp

@@ -146,12 +146,12 @@ std::string ArchFileUnix::concatPath(const std::string &prefix, const std::strin
   return path;
 }
 
-void ArchFileUnix::setProfileDirectory(const String &s)
+void ArchFileUnix::setProfileDirectory(const std::string &s)
 {
   m_profileDirectory = s;
 }
 
-void ArchFileUnix::setPluginDirectory(const String &s)
+void ArchFileUnix::setPluginDirectory(const std::string &s)
 {
   m_pluginDirectory = s;
 }

src/lib/arch/unix/ArchFileUnix.h

@@ -38,10 +38,10 @@ public:
   virtual std::string getPluginDirectory();
   virtual std::string getProfileDirectory();
   virtual std::string concatPath(const std::string &prefix, const std::string &suffix);
-  virtual void setProfileDirectory(const String &s);
-  virtual void setPluginDirectory(const String &s);
+  virtual void setProfileDirectory(const std::string &s);
+  virtual void setPluginDirectory(const std::string &s);
 
 private:
-  String m_profileDirectory;
-  String m_pluginDirectory;
+  std::string m_profileDirectory;
+  std::string m_pluginDirectory;
 };

src/lib/arch/win32/ArchFileWindows.cpp

@@ -143,7 +143,7 @@ std::string ArchFileWindows::getPluginDirectory()
 
 std::string ArchFileWindows::getProfileDirectory()
 {
-  String dir;
+  std::string dir;
   if (!m_profileDirectory.empty()) {
     dir = m_profileDirectory;
   } else {
@@ -173,12 +173,12 @@ std::string ArchFileWindows::concatPath(const std::string &prefix, const std::st
   return path;
 }
 
-void ArchFileWindows::setProfileDirectory(const String &s)
+void ArchFileWindows::setProfileDirectory(const std::string &s)
 {
   m_profileDirectory = s;
 }
 
-void ArchFileWindows::setPluginDirectory(const String &s)
+void ArchFileWindows::setPluginDirectory(const std::string &s)
 {
   m_pluginDirectory = s;
 }

src/lib/arch/win32/ArchFileWindows.h

@@ -38,10 +38,10 @@ public:
   virtual std::string getPluginDirectory();
   virtual std::string getProfileDirectory();
   virtual std::string concatPath(const std::string &prefix, const std::string &suffix);
-  virtual void setProfileDirectory(const String &s);
-  virtual void setPluginDirectory(const String &s);
+  virtual void setProfileDirectory(const std::string &s);
+  virtual void setPluginDirectory(const std::string &s);
 
 private:
-  String m_profileDirectory;
-  String m_pluginDirectory;
+  std::string m_profileDirectory;
+  std::string m_pluginDirectory;
 };

src/lib/arch/win32/ArchMiscWindows.cpp

@@ -384,7 +384,7 @@ void ArchMiscWindows::wakeupDisplay()
 
 bool ArchMiscWindows::wasLaunchedAsService()
 {
-  String name;
+  std::string name;
   if (!getParentProcessName(name)) {
     LOG((CLOG_ERR "cannot determine if process was launched as service"));
     return false;
@@ -393,7 +393,7 @@ bool ArchMiscWindows::wasLaunchedAsService()
   return (name == SERVICE_LAUNCHER);
 }
 
-bool ArchMiscWindows::getParentProcessName(String &name)
+bool ArchMiscWindows::getParentProcessName(std::string &name)
 {
   PROCESSENTRY32 parentEntry;
   if (!getParentProcessEntry(parentEntry)) {

src/lib/arch/win32/ArchMiscWindows.h

@@ -18,7 +18,6 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "common/stdset.h"
 #include "common/stdstring.h"
 
@@ -164,7 +163,7 @@ public:
   static bool wasLaunchedAsService();
 
   //! Returns true if we got the parent process name.
-  static bool getParentProcessName(String &name);
+  static bool getParentProcessName(std::string &name);
 
   static HINSTANCE instanceWin32();
 

src/lib/base/EventQueue.cpp

@@ -510,7 +510,7 @@ double EventQueue::getNextTimerTimeout() const
   return m_timerQueue.top();
 }
 
-Event::Type EventQueue::getRegisteredType(const String &name) const
+Event::Type EventQueue::getRegisteredType(const std::string &name) const
 {
   NameMap::const_iterator found = m_nameMap.find(name);
   if (found != m_nameMap.end())

src/lib/base/EventQueue.h

@@ -63,7 +63,7 @@ public:
   virtual bool isEmpty() const;
   virtual IEventJob *getHandler(Event::Type type, void *target) const;
   virtual const char *getTypeName(Event::Type type);
-  virtual Event::Type getRegisteredType(const String &name) const;
+  virtual Event::Type getRegisteredType(const std::string &name) const;
   void *getSystemTarget();
   virtual void waitForReady() const;
 
@@ -107,7 +107,7 @@ private:
   using EventTable = std::map<UInt32, Event>;
   using EventIDList = std::vector<UInt32>;
   using TypeMap = std::map<Event::Type, const char *>;
-  using NameMap = std::map<String, Event::Type>;
+  using NameMap = std::map<std::string, Event::Type>;
   using TypeHandlerTable = std::map<Event::Type, IEventJob *>;
   using HandlerTable = std::map<void *, TypeHandlerTable>;
 

src/lib/base/IEventQueue.h

@@ -19,8 +19,8 @@
 #pragma once
 
 #include "base/Event.h"
-#include "base/String.h"
 #include "common/IInterface.h"
+#include <string>
 
 class IEventJob;
 class IEventQueueBuffer;
@@ -211,7 +211,7 @@ public:
   /*!
   Returns the registered type for an event for a given name.
   */
-  virtual Event::Type getRegisteredType(const String &name) const = 0;
+  virtual Event::Type getRegisteredType(const std::string &name) const = 0;
 
   //! Get the system event type target
   /*!

src/lib/base/Path.cpp

@@ -26,7 +26,7 @@ namespace filesystem {
 
 #ifdef SYSAPI_WIN32
 
-std::wstring path(const String &filePath)
+std::wstring path(const std::string &filePath)
 {
   std::wstring result;
 
@@ -40,7 +40,7 @@ std::wstring path(const String &filePath)
 }
 
 #else
-std::string path(const String &filePath)
+std::string path(const std::string &filePath)
 {
   return filePath;
 }

src/lib/base/Path.h

@@ -16,16 +16,17 @@
  */
 #pragma once
 
-#include "String.h"
+#include <common/common.h>
+#include <string>
 
 namespace deskflow {
 
 namespace filesystem {
 
 #ifdef SYSAPI_WIN32
-std::wstring path(const String &filePath);
+std::wstring path(const std::string &filePath);
 #else
-std::string path(const String &filePath);
+std::string path(const std::string &filePath);
 #endif
 
 } // namespace filesystem

src/lib/base/String.cpp

@@ -30,20 +30,21 @@
 #include <iomanip>
 #include <sstream>
 #include <stdio.h>
+#include <string>
 
 namespace deskflow {
 namespace string {
 
-String format(const char *fmt, ...)
+std::string format(const char *fmt, ...)
 {
   va_list args;
   va_start(args, fmt);
-  String result = vformat(fmt, args);
+  std::string result = vformat(fmt, args);
   va_end(args);
   return result;
 }
 
-String vformat(const char *fmt, va_list args)
+std::string vformat(const char *fmt, va_list args)
 {
   // find highest indexed substitution and the locations of substitutions
   std::vector<size_t> pos;
@@ -108,7 +109,7 @@ String vformat(const char *fmt, va_list args)
   }
 
   // substitute
-  String result;
+  std::string result;
   result.reserve(resultLength);
   size_t src = 0;
   for (int i = 0; i < n; ++i) {
@@ -121,12 +122,12 @@ String vformat(const char *fmt, va_list args)
   return result;
 }
 
-String sprintf(const char *fmt, ...)
+std::string sprintf(const char *fmt, ...)
 {
   char tmp[1024];
   char *buffer = tmp;
   int len = (int)(sizeof(tmp) / sizeof(tmp[0]));
-  String result;
+  std::string result;
   while (buffer != NULL) {
     // try printing into the buffer
     va_list args;
@@ -156,27 +157,27 @@ String sprintf(const char *fmt, ...)
   return result;
 }
 
-void findReplaceAll(String &subject, const String &find, const String &replace)
+void findReplaceAll(std::string &subject, const std::string &find, const std::string &replace)
 {
   size_t pos = 0;
-  while ((pos = subject.find(find, pos)) != String::npos) {
+  while ((pos = subject.find(find, pos)) != std::string::npos) {
     subject.replace(pos, find.length(), replace);
     pos += replace.length();
   }
 }
 
-String removeFileExt(String filename)
+std::string removeFileExt(std::string filename)
 {
   size_t dot = filename.find_last_of('.');
 
-  if (dot == String::npos) {
+  if (dot == std::string::npos) {
     return filename;
   }
 
   return filename.substr(0, dot);
 }
 
-void toHex(String &subject, int width, const char fill)
+void toHex(std::string &subject, int width, const char fill)
 {
   std::stringstream ss;
   ss << std::hex;
@@ -187,24 +188,24 @@ void toHex(String &subject, int width, const char fill)
   subject = ss.str();
 }
 
-void uppercase(String &subject)
+void uppercase(std::string &subject)
 {
   std::transform(subject.begin(), subject.end(), subject.begin(), ::toupper);
 }
 
-void removeChar(String &subject, const char c)
+void removeChar(std::string &subject, const char c)
 {
   subject.erase(std::remove(subject.begin(), subject.end(), c), subject.end());
 }
 
-String sizeTypeToString(size_t n)
+std::string sizeTypeToString(size_t n)
 {
   std::stringstream ss;
   ss << n;
   return ss.str();
 }
 
-size_t stringToSizeType(String string)
+size_t stringToSizeType(std::string string)
 {
   std::istringstream iss(string);
   size_t value;
@@ -212,13 +213,13 @@ size_t stringToSizeType(String string)
   return value;
 }
 
-std::vector<String> splitString(String string, const char c)
+std::vector<std::string> splitString(std::string string, const char c)
 {
-  std::vector<String> results;
+  std::vector<std::string> results;
 
   size_t head = 0;
   size_t separator = string.find(c);
-  while (separator != String::npos) {
+  while (separator != std::string::npos) {
     if (head != separator) {
       results.push_back(string.substr(head, separator - head));
     }
@@ -237,31 +238,31 @@ std::vector<String> splitString(String string, const char c)
 // CaselessCmp
 //
 
-bool CaselessCmp::cmpEqual(const String::value_type &a, const String::value_type &b)
+bool CaselessCmp::operator()(const std::string &a, const std::string &b) const
 {
-  // should use std::tolower but not in all versions of libstdc++ have it
-  return tolower(a) == tolower(b);
+  return less(a, b);
 }
 
-bool CaselessCmp::cmpLess(const String::value_type &a, const String::value_type &b)
+bool CaselessCmp::less(const std::string &a, const std::string &b)
+{
+  return std::lexicographical_compare(a.begin(), a.end(), b.begin(), b.end(), &deskflow::string::CaselessCmp::cmpLess);
+}
+
+bool CaselessCmp::equal(const std::string &a, const std::string &b)
+{
+  return !(less(a, b) || less(b, a));
+}
+
+bool CaselessCmp::cmpLess(const std::string::value_type &a, const std::string::value_type &b)
 {
   // should use std::tolower but not in all versions of libstdc++ have it
   return tolower(a) < tolower(b);
 }
 
-bool CaselessCmp::less(const String &a, const String &b)
+bool CaselessCmp::cmpEqual(const std::string::value_type &a, const std::string::value_type &b)
 {
-  return std::lexicographical_compare(a.begin(), a.end(), b.begin(), b.end(), &deskflow::string::CaselessCmp::cmpLess);
-}
-
-bool CaselessCmp::equal(const String &a, const String &b)
-{
-  return !(less(a, b) || less(b, a));
-}
-
-bool CaselessCmp::operator()(const String &a, const String &b) const
-{
-  return less(a, b);
+  // should use std::tolower but not in all versions of libstdc++ have it
+  return tolower(a) == tolower(b);
 }
 
 } // namespace string

src/lib/base/String.h

@@ -24,12 +24,9 @@
 #include <stdarg.h>
 #include <vector>
 
-// use standard C++ string class for our string class
-using String = std::string;
-
 namespace deskflow {
 
-//! String utilities
+//! std::string utilities
 /*!
 Provides functions for string manipulation.
 */
@@ -45,67 +42,67 @@ characters and conversion specifications introduced by `\%':
 All arguments in the variable list are const char*.  Positional
 elements are indexed from 1.
 */
-String format(const char *fmt, ...);
+std::string format(const char *fmt, ...);
 
 //! Format positional arguments
 /*!
 Same as format() except takes va_list.
 */
-String vformat(const char *fmt, va_list);
+std::string vformat(const char *fmt, va_list);
 
 //! Print a string using sprintf-style formatting
 /*!
 Equivalent to sprintf() except the result is returned as a String.
 */
-String sprintf(const char *fmt, ...);
+std::string sprintf(const char *fmt, ...);
 
 //! Find and replace all
 /*!
 Finds \c find inside \c subject and replaces it with \c replace
 */
-void findReplaceAll(String &subject, const String &find, const String &replace);
+void findReplaceAll(std::string &subject, const std::string &find, const std::string &replace);
 
 //! Remove file extension
 /*!
 Finds the last dot and remove all characters from the dot to the end
 */
-String removeFileExt(String filename);
+std::string removeFileExt(std::string filename);
 
 //! Convert into hexdecimal
 /*!
 Convert each character in \c subject into hexdecimal form with \c width
 */
-void toHex(String &subject, int width, const char fill = '0');
+void toHex(std::string &subject, int width, const char fill = '0');
 
 //! Convert to all uppercase
 /*!
 Convert each character in \c subject to uppercase
 */
-void uppercase(String &subject);
+void uppercase(std::string &subject);
 
 //! Remove all specific char in suject
 /*!
 Remove all specific \c c in \c suject
 */
-void removeChar(String &subject, const char c);
+void removeChar(std::string &subject, const char c);
 
 //! Convert a size type to a string
 /*!
 Convert an size type to a string
 */
-String sizeTypeToString(size_t n);
+std::string sizeTypeToString(size_t n);
 
 //! Convert a string to a size type
 /*!
 Convert an a \c string to an size type
 */
-size_t stringToSizeType(String string);
+size_t stringToSizeType(std::string string);
 
 //! Split a string into substrings
 /*!
 Split a \c string that separated by a \c c into substrings
 */
-std::vector<String> splitString(String string, const char c);
+std::vector<std::string> splitString(std::string string, const char c);
 
 //! Case-insensitive comparisons
 /*!
@@ -115,19 +112,19 @@ class CaselessCmp
 {
 public:
   //! Same as less()
-  bool operator()(const String &a, const String &b) const;
+  bool operator()(const std::string &a, const std::string &b) const;
 
   //! Returns true iff \c a is lexicographically less than \c b
-  static bool less(const String &a, const String &b);
+  static bool less(const std::string &a, const std::string &b);
 
   //! Returns true iff \c a is lexicographically equal to \c b
-  static bool equal(const String &a, const String &b);
+  static bool equal(const std::string &a, const std::string &b);
 
   //! Returns true iff \c a is lexicographically less than \c b
-  static bool cmpLess(const String::value_type &a, const String::value_type &b);
+  static bool cmpLess(const std::string::value_type &a, const std::string::value_type &b);
 
   //! Returns true iff \c a is lexicographically equal to \c b
-  static bool cmpEqual(const String::value_type &a, const String::value_type &b);
+  static bool cmpEqual(const std::string::value_type &a, const std::string::value_type &b);
 };
 
 } // namespace string

src/lib/base/Unicode.cpp

@@ -84,7 +84,7 @@ inline static void setError(bool *errors)
 UInt32 Unicode::s_invalid = 0x0000ffff;
 UInt32 Unicode::s_replacement = 0x0000fffd;
 
-bool Unicode::isUTF8(const String &src)
+bool Unicode::isUTF8(const std::string &src)
 {
   // convert and test each character
   const UInt8 *data = reinterpret_cast<const UInt8 *>(src.c_str());
@@ -96,14 +96,14 @@ bool Unicode::isUTF8(const String &src)
   return true;
 }
 
-String Unicode::UTF8ToUCS2(const String &src, bool *errors)
+std::string Unicode::UTF8ToUCS2(const std::string &src, bool *errors)
 {
   // default to success
   resetError(errors);
 
   // get size of input string and reserve some space in output
   UInt32 n = (UInt32)src.size();
-  String dst;
+  std::string dst;
   dst.reserve(2 * n);
 
   // convert each character
@@ -123,14 +123,14 @@ String Unicode::UTF8ToUCS2(const String &src, bool *errors)
   return dst;
 }
 
-String Unicode::UTF8ToUCS4(const String &src, bool *errors)
+std::string Unicode::UTF8ToUCS4(const std::string &src, bool *errors)
 {
   // default to success
   resetError(errors);
 
   // get size of input string and reserve some space in output
   UInt32 n = (UInt32)src.size();
-  String dst;
+  std::string dst;
   dst.reserve(4 * n);
 
   // convert each character
@@ -146,14 +146,14 @@ String Unicode::UTF8ToUCS4(const String &src, bool *errors)
   return dst;
 }
 
-String Unicode::UTF8ToUTF16(const String &src, bool *errors)
+std::string Unicode::UTF8ToUTF16(const std::string &src, bool *errors)
 {
   // default to success
   resetError(errors);
 
   // get size of input string and reserve some space in output
   UInt32 n = (UInt32)src.size();
-  String dst;
+  std::string dst;
   dst.reserve(2 * n);
 
   // convert each character
@@ -181,14 +181,14 @@ String Unicode::UTF8ToUTF16(const String &src, bool *errors)
   return dst;
 }
 
-String Unicode::UTF8ToUTF32(const String &src, bool *errors)
+std::string Unicode::UTF8ToUTF32(const std::string &src, bool *errors)
 {
   // default to success
   resetError(errors);
 
   // get size of input string and reserve some space in output
   UInt32 n = (UInt32)src.size();
-  String dst;
+  std::string dst;
   dst.reserve(4 * n);
 
   // convert each character
@@ -207,7 +207,7 @@ String Unicode::UTF8ToUTF32(const String &src, bool *errors)
   return dst;
 }
 
-String Unicode::UTF8ToText(const String &src, bool *errors)
+std::string Unicode::UTF8ToText(const std::string &src, bool *errors)
 {
   // default to success
   resetError(errors);
@@ -220,7 +220,7 @@ String Unicode::UTF8ToText(const String &src, bool *errors)
   int len = ARCH->convStringWCToMB(NULL, tmp, size, errors);
   char *mbs = new char[len + 1];
   ARCH->convStringWCToMB(mbs, tmp, size, errors);
-  String text(mbs, len);
+  std::string text(mbs, len);
 
   // clean up
   delete[] mbs;
@@ -229,7 +229,7 @@ String Unicode::UTF8ToText(const String &src, bool *errors)
   return text;
 }
 
-String Unicode::UCS2ToUTF8(const String &src, bool *errors)
+std::string Unicode::UCS2ToUTF8(const std::string &src, bool *errors)
 {
   // default to success
   resetError(errors);
@@ -239,7 +239,7 @@ String Unicode::UCS2ToUTF8(const String &src, bool *errors)
   return doUCS2ToUTF8(reinterpret_cast<const UInt8 *>(src.data()), n, errors);
 }
 
-String Unicode::UCS4ToUTF8(const String &src, bool *errors)
+std::string Unicode::UCS4ToUTF8(const std::string &src, bool *errors)
 {
   // default to success
   resetError(errors);
@@ -249,7 +249,7 @@ String Unicode::UCS4ToUTF8(const String &src, bool *errors)
   return doUCS4ToUTF8(reinterpret_cast<const UInt8 *>(src.data()), n, errors);
 }
 
-String Unicode::UTF16ToUTF8(const String &src, bool *errors)
+std::string Unicode::UTF16ToUTF8(const std::string &src, bool *errors)
 {
   // default to success
   resetError(errors);
@@ -259,7 +259,7 @@ String Unicode::UTF16ToUTF8(const String &src, bool *errors)
   return doUTF16ToUTF8(reinterpret_cast<const UInt8 *>(src.data()), n, errors);
 }
 
-String Unicode::UTF32ToUTF8(const String &src, bool *errors)
+std::string Unicode::UTF32ToUTF8(const std::string &src, bool *errors)
 {
   // default to success
   resetError(errors);
@@ -269,7 +269,7 @@ String Unicode::UTF32ToUTF8(const String &src, bool *errors)
   return doUTF32ToUTF8(reinterpret_cast<const UInt8 *>(src.data()), n, errors);
 }
 
-String Unicode::textToUTF8(const String &src, bool *errors, IArchString::EWideCharEncoding encoding)
+std::string Unicode::textToUTF8(const std::string &src, bool *errors, IArchString::EWideCharEncoding encoding)
 {
   // default to success
   resetError(errors);
@@ -281,7 +281,7 @@ String Unicode::textToUTF8(const String &src, bool *errors, IArchString::EWideCh
   ARCH->convStringMBToWC(wcs, src.c_str(), n, errors);
 
   // convert to UTF8
-  String utf8 = wideCharToUTF8(wcs, len, errors, encoding);
+  std::string utf8 = wideCharToUTF8(wcs, len, errors, encoding);
 
   // clean up
   delete[] wcs;
@@ -289,10 +289,10 @@ String Unicode::textToUTF8(const String &src, bool *errors, IArchString::EWideCh
   return utf8;
 }
 
-wchar_t *Unicode::UTF8ToWideChar(const String &src, UInt32 &size, bool *errors)
+wchar_t *Unicode::UTF8ToWideChar(const std::string &src, UInt32 &size, bool *errors)
 {
   // convert to platform's wide character encoding
-  String tmp;
+  std::string tmp;
   switch (ARCH->getWideCharEncoding()) {
   case IArchString::kUCS2:
     tmp = UTF8ToUCS2(src, errors);
@@ -324,7 +324,8 @@ wchar_t *Unicode::UTF8ToWideChar(const String &src, UInt32 &size, bool *errors)
   return dst;
 }
 
-String Unicode::wideCharToUTF8(const wchar_t *src, UInt32 size, bool *errors, IArchString::EWideCharEncoding encoding)
+std::string
+Unicode::wideCharToUTF8(const wchar_t *src, UInt32 size, bool *errors, IArchString::EWideCharEncoding encoding)
 {
   if (encoding == IArchString::kPlatformDetermined) {
     encoding = ARCH->getWideCharEncoding();
@@ -347,14 +348,14 @@ String Unicode::wideCharToUTF8(const wchar_t *src, UInt32 size, bool *errors, IA
 
   default:
     assert(0 && "unknown wide character encoding");
-    return String();
+    return std::string();
   }
 }
 
-String Unicode::doUCS2ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
+std::string Unicode::doUCS2ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
 {
   // make some space
-  String dst;
+  std::string dst;
   dst.reserve(n);
 
   // check if first character is 0xfffe or 0xfeff
@@ -387,10 +388,10 @@ String Unicode::doUCS2ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
   return dst;
 }
 
-String Unicode::doUCS4ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
+std::string Unicode::doUCS4ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
 {
   // make some space
-  String dst;
+  std::string dst;
   dst.reserve(n);
 
   // check if first character is 0xfffe or 0xfeff
@@ -423,10 +424,10 @@ String Unicode::doUCS4ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
   return dst;
 }
 
-String Unicode::doUTF16ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
+std::string Unicode::doUTF16ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
 {
   // make some space
-  String dst;
+  std::string dst;
   dst.reserve(n);
 
   // check if first character is 0xfffe or 0xfeff
@@ -482,10 +483,10 @@ String Unicode::doUTF16ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
   return dst;
 }
 
-String Unicode::doUTF32ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
+std::string Unicode::doUTF32ToUTF8(const UInt8 *data, UInt32 n, bool *errors)
 {
   // make some space
-  String dst;
+  std::string dst;
   dst.reserve(n);
 
   // check if first character is 0xfffe or 0xfeff
@@ -672,7 +673,7 @@ UInt32 Unicode::fromUTF8(const UInt8 *&data, UInt32 &n)
   return c;
 }
 
-void Unicode::toUTF8(String &dst, UInt32 c, bool *errors)
+void Unicode::toUTF8(std::string &dst, UInt32 c, bool *errors)
 {
   UInt8 data[6];
 

src/lib/base/Unicode.h

@@ -19,8 +19,8 @@
 #pragma once
 
 #include "arch/IArchString.h"
-#include "base/String.h"
 #include "common/basic_types.h"
+#include <string>
 
 //! Unicode utility functions
 /*!
@@ -38,7 +38,7 @@ public:
   Returns true iff the string contains a valid sequence of UTF-8
   encoded characters.
   */
-  static bool isUTF8(const String &);
+  static bool isUTF8(const std::string &);
 
   //! Convert from UTF-8 to UCS-2 encoding
   /*!
@@ -46,7 +46,7 @@ public:
   is set to true iff any character could not be encoded in UCS-2.
   Decoding errors do not set *errors.
   */
-  static String UTF8ToUCS2(const String &, bool *errors = NULL);
+  static std::string UTF8ToUCS2(const std::string &, bool *errors = NULL);
 
   //! Convert from UTF-8 to UCS-4 encoding
   /*!
@@ -54,7 +54,7 @@ public:
   is set to true iff any character could not be encoded in UCS-4.
   Decoding errors do not set *errors.
   */
-  static String UTF8ToUCS4(const String &, bool *errors = NULL);
+  static std::string UTF8ToUCS4(const std::string &, bool *errors = NULL);
 
   //! Convert from UTF-8 to UTF-16 encoding
   /*!
@@ -62,7 +62,7 @@ public:
   is set to true iff any character could not be encoded in UTF-16.
   Decoding errors do not set *errors.
   */
-  static String UTF8ToUTF16(const String &, bool *errors = NULL);
+  static std::string UTF8ToUTF16(const std::string &, bool *errors = NULL);
 
   //! Convert from UTF-8 to UTF-32 encoding
   /*!
@@ -70,7 +70,7 @@ public:
   is set to true iff any character could not be encoded in UTF-32.
   Decoding errors do not set *errors.
   */
-  static String UTF8ToUTF32(const String &, bool *errors = NULL);
+  static std::string UTF8ToUTF32(const std::string &, bool *errors = NULL);
 
   //! Convert from UTF-8 to the current locale encoding
   /*!
@@ -78,43 +78,44 @@ public:
   NULL then *errors is set to true iff any character could not be encoded.
   Decoding errors do not set *errors.
   */
-  static String UTF8ToText(const String &, bool *errors = NULL);
+  static std::string UTF8ToText(const std::string &, bool *errors = NULL);
 
   //! Convert from UCS-2 to UTF-8
   /*!
   Convert from UCS-2 to UTF-8.  If errors is not NULL then *errors is
   set to true iff any character could not be decoded.
   */
-  static String UCS2ToUTF8(const String &, bool *errors = NULL);
+  static std::string UCS2ToUTF8(const std::string &, bool *errors = NULL);
 
   //! Convert from UCS-4 to UTF-8
   /*!
   Convert from UCS-4 to UTF-8.  If errors is not NULL then *errors is
   set to true iff any character could not be decoded.
   */
-  static String UCS4ToUTF8(const String &, bool *errors = NULL);
+  static std::string UCS4ToUTF8(const std::string &, bool *errors = NULL);
 
   //! Convert from UTF-16 to UTF-8
   /*!
   Convert from UTF-16 to UTF-8.  If errors is not NULL then *errors is
   set to true iff any character could not be decoded.
   */
-  static String UTF16ToUTF8(const String &, bool *errors = NULL);
+  static std::string UTF16ToUTF8(const std::string &, bool *errors = NULL);
 
   //! Convert from UTF-32 to UTF-8
   /*!
   Convert from UTF-32 to UTF-8.  If errors is not NULL then *errors is
   set to true iff any character could not be decoded.
   */
-  static String UTF32ToUTF8(const String &, bool *errors = NULL);
+  static std::string UTF32ToUTF8(const std::string &, bool *errors = NULL);
 
   //! Convert from the current locale encoding to UTF-8
   /*!
   Convert from the current locale encoding to UTF-8.  If errors is not
   NULL then *errors is set to true iff any character could not be decoded.
   */
-  static String textToUTF8(
-      const String &, bool *errors = nullptr, IArchString::EWideCharEncoding encoding = IArchString::kPlatformDetermined
+  static std::string textToUTF8(
+      const std::string &, bool *errors = nullptr,
+      IArchString::EWideCharEncoding encoding = IArchString::kPlatformDetermined
   );
 
   //@}
@@ -124,24 +125,24 @@ private:
   // to the platform).  caller must delete[] the returned string.  the
   // string is *not* nul terminated;  the length (in characters) is
   // returned in size.
-  static wchar_t *UTF8ToWideChar(const String &, UInt32 &size, bool *errors);
+  static wchar_t *UTF8ToWideChar(const std::string &, UInt32 &size, bool *errors);
 
   // convert nul terminated wchar_t string (in platform's native
   // encoding) to UTF8.
-  static String wideCharToUTF8(
+  static std::string wideCharToUTF8(
       const wchar_t *, UInt32 size, bool *errors,
       IArchString::EWideCharEncoding encoding = IArchString::kPlatformDetermined
   );
 
   // internal conversion to UTF8
-  static String doUCS2ToUTF8(const UInt8 *src, UInt32 n, bool *errors);
-  static String doUCS4ToUTF8(const UInt8 *src, UInt32 n, bool *errors);
-  static String doUTF16ToUTF8(const UInt8 *src, UInt32 n, bool *errors);
-  static String doUTF32ToUTF8(const UInt8 *src, UInt32 n, bool *errors);
+  static std::string doUCS2ToUTF8(const UInt8 *src, UInt32 n, bool *errors);
+  static std::string doUCS4ToUTF8(const UInt8 *src, UInt32 n, bool *errors);
+  static std::string doUTF16ToUTF8(const UInt8 *src, UInt32 n, bool *errors);
+  static std::string doUTF32ToUTF8(const UInt8 *src, UInt32 n, bool *errors);
 
   // convert characters to/from UTF8
   static UInt32 fromUTF8(const UInt8 *&src, UInt32 &size);
-  static void toUTF8(String &dst, UInt32 c, bool *errors);
+  static void toUTF8(std::string &dst, UInt32 c, bool *errors);
 
 private:
   static UInt32 s_invalid;

src/lib/base/XBase.cpp

@@ -32,7 +32,7 @@ XBase::XBase() : std::runtime_error("")
   // do nothing
 }
 
-XBase::XBase(const String &msg) : std::runtime_error(msg)
+XBase::XBase(const std::string &msg) : std::runtime_error(msg)
 {
   // do nothing
 }
@@ -52,13 +52,13 @@ const char *XBase::what() const _NOEXCEPT
   return m_what.c_str();
 }
 
-String XBase::format(const char * /*id*/, const char *fmt, ...) const throw()
+std::string XBase::format(const char * /*id*/, const char *fmt, ...) const throw()
 {
   // FIXME -- lookup message string using id as an index.  set
   // fmt to that string if it exists.
 
   // format
-  String result;
+  std::string result;
   va_list args;
   va_start(args, fmt);
   try {

src/lib/base/XBase.h

@@ -18,8 +18,8 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "common/stdexcept.h"
+#include <string>
 
 //! Exception base class
 /*!
@@ -31,7 +31,7 @@ public:
   //! Use getWhat() as the result of what()
   XBase();
   //! Use \c msg as the result of what()
-  XBase(const String &msg);
+  XBase(const std::string &msg);
   virtual ~XBase() _NOEXCEPT;
 
   //! Reason for exception
@@ -39,7 +39,7 @@ public:
 
 protected:
   //! Get a human readable string describing the exception
-  virtual String getWhat() const throw()
+  virtual std::string getWhat() const throw()
   {
     return "";
   }
@@ -50,16 +50,16 @@ protected:
   no format can be found, then replaces positional parameters in
   the format string and returns the result.
   */
-  virtual String format(const char *id, const char *defaultFormat, ...) const throw();
+  virtual std::string format(const char *id, const char *defaultFormat, ...) const throw();
 
 private:
-  mutable String m_what;
+  mutable std::string m_what;
 };
 
 /*!
 \def XBASE_SUBCLASS
 Convenience macro to subclass from XBase (or a subclass of it),
-providing the c'tor taking a const String&.  getWhat() is not
+providing the c'tor taking a const std::string&.  getWhat() is not
 declared.
 */
 #define XBASE_SUBCLASS(name_, super_)                                                                                  \
@@ -69,7 +69,7 @@ declared.
     name_() : super_()                                                                                                 \
     {                                                                                                                  \
     }                                                                                                                  \
-    name_(const String &msg) : super_(msg)                                                                             \
+    name_(const std::string &msg) : super_(msg)                                                                        \
     {                                                                                                                  \
     }                                                                                                                  \
     virtual ~name_() _NOEXCEPT                                                                                         \
@@ -80,7 +80,7 @@ declared.
 /*!
 \def XBASE_SUBCLASS
 Convenience macro to subclass from XBase (or a subclass of it),
-providing the c'tor taking a const String&.  getWhat() must be
+providing the c'tor taking a const std::string&.  getWhat() must be
 implemented.
 */
 #define XBASE_SUBCLASS_WHAT(name_, super_)                                                                             \
@@ -90,7 +90,7 @@ implemented.
     name_() : super_()                                                                                                 \
     {                                                                                                                  \
     }                                                                                                                  \
-    name_(const String &msg) : super_(msg)                                                                             \
+    name_(const std::string &msg) : super_(msg)                                                                        \
     {                                                                                                                  \
     }                                                                                                                  \
     virtual ~name_() _NOEXCEPT                                                                                         \
@@ -98,13 +98,13 @@ implemented.
     }                                                                                                                  \
                                                                                                                        \
   protected:                                                                                                           \
-    virtual String getWhat() const throw();                                                                            \
+    virtual std::string getWhat() const throw();                                                                       \
   }
 
 /*!
 \def XBASE_SUBCLASS_FORMAT
 Convenience macro to subclass from XBase (or a subclass of it),
-providing the c'tor taking a const String&.  what() is overridden
+providing the c'tor taking a const std::string&.  what() is overridden
 to call getWhat() when first called;  getWhat() can format the
 error message and can call what() to get the message passed to the
 c'tor.
@@ -124,7 +124,7 @@ c'tor.
     name_() : super_(), m_state(kDone)                                                                                 \
     {                                                                                                                  \
     }                                                                                                                  \
-    name_(const String &msg) : super_(msg), m_state(kFirst)                                                            \
+    name_(const std::string &msg) : super_(msg), m_state(kFirst)                                                       \
     {                                                                                                                  \
     }                                                                                                                  \
     virtual ~name_() _NOEXCEPT                                                                                         \
@@ -146,7 +146,7 @@ c'tor.
     }                                                                                                                  \
                                                                                                                        \
   protected:                                                                                                           \
-    virtual String getWhat() const throw();                                                                            \
+    virtual std::string getWhat() const throw();                                                                       \
                                                                                                                        \
   private:                                                                                                             \
     mutable EState m_state;                                                                                            \

src/lib/base/log_outputters.cpp

@@ -19,6 +19,7 @@
 #include "base/log_outputters.h"
 #include "arch/Arch.h"
 #include "base/Path.h"
+#include "base/String.h"
 #include "base/TMethodJob.h"
 
 #include <fstream>
@@ -205,7 +206,7 @@ bool BufferedLogOutputter::write(ELevel, const char *message)
   while (m_buffer.size() >= m_maxBufferSize) {
     m_buffer.pop_front();
   }
-  m_buffer.push_back(String(message));
+  m_buffer.push_back(std::string(message));
   return true;
 }
 
@@ -246,7 +247,7 @@ bool FileLogOutputter::write(ELevel level, const char *message)
   m_handle.close();
 
   if (moveFile) {
-    String oldLogFilename = deskflow::string::sprintf("%s.1", m_fileName.c_str());
+    std::string oldLogFilename = deskflow::string::sprintf("%s.1", m_fileName.c_str());
     remove(oldLogFilename.c_str());
     rename(m_fileName.c_str(), oldLogFilename.c_str());
   }

src/lib/base/log_outputters.h

@@ -19,13 +19,13 @@
 #pragma once
 
 #include "base/ILogOutputter.h"
-#include "base/String.h"
 #include "common/basic_types.h"
 #include "common/stddeque.h"
 #include "mt/Thread.h"
 
 #include <fstream>
 #include <list>
+#include <string>
 
 //! Stop traversing log chain outputter
 /*!
@@ -137,7 +137,7 @@ This outputter records the last N log messages.
 class BufferedLogOutputter : public ILogOutputter
 {
 private:
-  using Buffer = std::deque<String>;
+  using Buffer = std::deque<std::string>;
 
 public:
   using const_iterator = Buffer::const_iterator;

src/lib/client/Client.cpp

@@ -57,7 +57,7 @@ using namespace deskflow::client;
 //
 
 Client::Client(
-    IEventQueue *events, const String &name, const NetworkAddress &address, ISocketFactory *socketFactory,
+    IEventQueue *events, const std::string &name, const NetworkAddress &address, ISocketFactory *socketFactory,
     deskflow::Screen *screen, deskflow::ClientArgs const &args
 )
     : m_mock(false),
@@ -299,12 +299,12 @@ void Client::setClipboardDirty(ClipboardID, bool)
   assert(0 && "shouldn't be called");
 }
 
-void Client::keyDown(KeyID id, KeyModifierMask mask, KeyButton button, const String &lang)
+void Client::keyDown(KeyID id, KeyModifierMask mask, KeyButton button, const std::string &lang)
 {
   m_screen->keyDown(id, mask, button, lang);
 }
 
-void Client::keyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const String &lang)
+void Client::keyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const std::string &lang)
 {
   m_screen->keyRepeat(id, mask, count, button, lang);
 }
@@ -378,7 +378,7 @@ void Client::setOptions(const OptionsList &options)
   m_screen->setOptions(options);
 }
 
-String Client::getName() const
+std::string Client::getName() const
 {
   return m_name;
 }
@@ -402,7 +402,7 @@ void Client::sendClipboard(ClipboardID id)
   // check time
   if (m_timeClipboard[id] == 0 || clipboard.getTime() != m_timeClipboard[id]) {
     // marshall the data
-    String data = clipboard.marshall();
+    std::string data = clipboard.marshall();
     if (data.size() >= m_maximumClipboardSize * 1024) {
       LOG(
           (CLOG_NOTE "skipping clipboard transfer because the clipboard"
@@ -757,7 +757,7 @@ void Client::writeToDropDirThread(void *)
   DropHelper::writeToDir(m_screen->getDropTarget(), m_dragFileList, m_receivedFileData);
 }
 
-void Client::dragInfoReceived(UInt32 fileNum, String data)
+void Client::dragInfoReceived(UInt32 fileNum, std::string data)
 {
   // TODO: fix duplicate function from CServer
   if (!m_args.m_enableDragDrop) {
@@ -798,7 +798,7 @@ void Client::sendFileThread(void *filename)
   m_sendFileThread.reset(nullptr);
 }
 
-void Client::sendDragInfo(UInt32 fileCount, String &info, size_t size)
+void Client::sendDragInfo(UInt32 fileCount, std::string &info, size_t size)
 {
   m_server->sendDragInfo(fileCount, info.c_str(), size);
 }

src/lib/client/Client.h

@@ -59,7 +59,7 @@ public:
     {
     }
     bool m_retry;
-    String m_what;
+    std::string m_what;
   };
 
 public:
@@ -69,7 +69,7 @@ public:
   to create the socket.  \p screen is    the local screen.
   */
   Client(
-      IEventQueue *events, const String &name, const NetworkAddress &address, ISocketFactory *socketFactory,
+      IEventQueue *events, const std::string &name, const NetworkAddress &address, ISocketFactory *socketFactory,
       deskflow::Screen *screen, deskflow::ClientArgs const &args
   );
   Client(Client const &) = delete;
@@ -109,13 +109,13 @@ public:
   virtual void handshakeComplete();
 
   //! Received drag information
-  void dragInfoReceived(UInt32 fileNum, String data);
+  void dragInfoReceived(UInt32 fileNum, std::string data);
 
   //! Create a new thread and use it to send file to Server
   void sendFileToServer(const char *filename);
 
   //! Send dragging file information back to server
-  void sendDragInfo(UInt32 fileCount, String &info, size_t size);
+  void sendDragInfo(UInt32 fileCount, std::string &info, size_t size);
 
   //@}
   //! @name accessors
@@ -151,7 +151,7 @@ public:
   }
 
   //! Return received file data
-  String &getReceivedFileData()
+  std::string &getReceivedFileData()
   {
     return m_receivedFileData;
   }
@@ -182,8 +182,8 @@ public:
   virtual void setClipboard(ClipboardID, const IClipboard *);
   virtual void grabClipboard(ClipboardID);
   virtual void setClipboardDirty(ClipboardID, bool);
-  virtual void keyDown(KeyID, KeyModifierMask, KeyButton, const String &);
-  virtual void keyRepeat(KeyID, KeyModifierMask, SInt32 count, KeyButton, const String &lang);
+  virtual void keyDown(KeyID, KeyModifierMask, KeyButton, const std::string &);
+  virtual void keyRepeat(KeyID, KeyModifierMask, SInt32 count, KeyButton, const std::string &lang);
   virtual void keyUp(KeyID, KeyModifierMask, KeyButton);
   virtual void mouseDown(ButtonID);
   virtual void mouseUp(ButtonID);
@@ -193,7 +193,7 @@ public:
   virtual void screensaver(bool activate);
   virtual void resetOptions();
   virtual void setOptions(const OptionsList &options);
-  virtual String getName() const;
+  virtual std::string getName() const;
 
 private:
   void sendClipboard(ClipboardID);
@@ -233,7 +233,7 @@ public:
   bool m_mock;
 
 private:
-  String m_name;
+  std::string m_name;
   NetworkAddress m_serverAddress;
   ISocketFactory *m_socketFactory;
   deskflow::Screen *m_screen;
@@ -247,12 +247,12 @@ private:
   bool m_ownClipboard[kClipboardEnd];
   bool m_sentClipboard[kClipboardEnd];
   IClipboard::Time m_timeClipboard[kClipboardEnd];
-  String m_dataClipboard[kClipboardEnd];
+  std::string m_dataClipboard[kClipboardEnd];
   IEventQueue *m_events;
   std::size_t m_expectedFileSize;
-  String m_receivedFileData;
+  std::string m_receivedFileData;
   DragFileList m_dragFileList;
-  String m_dragFileExt;
+  std::string m_dragFileExt;
   using AutoThread = std::unique_ptr<Thread>;
   AutoThread m_sendFileThread;
   AutoThread m_writeToDropDirThread;

src/lib/client/ServerProxy.cpp

@@ -250,7 +250,7 @@ ServerProxy::EResult ServerProxy::parseMessage(const UInt8 *code)
   }
 
   else if (memcmp(code, kMsgDKeyDownLang, 4) == 0) {
-    String lang;
+    std::string lang;
     UInt16 id = 0;
     UInt16 mask = 0;
     UInt16 button = 0;
@@ -382,7 +382,7 @@ bool ServerProxy::onGrabClipboard(ClipboardID id)
 
 void ServerProxy::onClipboardChanged(ClipboardID id, const IClipboard *clipboard)
 {
-  String data = IClipboard::marshall(clipboard);
+  std::string data = IClipboard::marshall(clipboard);
   LOG((CLOG_DEBUG "sending clipboard %d seqnum=%d", id, m_seqNum));
 
   StreamChunker::sendClipboard(data, data.size(), id, m_seqNum, m_events, this);
@@ -547,7 +547,7 @@ void ServerProxy::leave()
 void ServerProxy::setClipboard()
 {
   // parse
-  static String dataCached;
+  static std::string dataCached;
   ClipboardID id;
   UInt32 seq;
 
@@ -585,7 +585,7 @@ void ServerProxy::grabClipboard()
   m_client->grabClipboard(id);
 }
 
-void ServerProxy::keyDown(UInt16 id, UInt16 mask, UInt16 button, const String &lang)
+void ServerProxy::keyDown(UInt16 id, UInt16 mask, UInt16 button, const std::string &lang)
 {
   // get mouse up to date
   flushCompressedMouse();
@@ -608,7 +608,7 @@ void ServerProxy::keyRepeat()
 
   // parse
   UInt16 id, mask, count, button;
-  String lang;
+  std::string lang;
   ProtocolUtil::readf(m_stream, kMsgDKeyRepeat + 4, &id, &mask, &count, &button, &lang);
   LOG(
       (CLOG_DEBUG1 "recv key repeat id=0x%08x, mask=0x%04x, count=%d, "
@@ -836,7 +836,7 @@ void ServerProxy::fileChunkReceived()
     m_events->addEvent(Event(m_events->forFile().fileRecieveCompleted(), m_client));
   } else if (result == kStart) {
     if (m_client->getDragFileList().size() > 0) {
-      String filename = m_client->getDragFileList().at(0).getFilename();
+      std::string filename = m_client->getDragFileList().at(0).getFilename();
       LOG((CLOG_DEBUG "start receiving %s", filename.c_str()));
     }
   }
@@ -846,7 +846,7 @@ void ServerProxy::dragInfoReceived()
 {
   // parse
   UInt32 fileNum = 0;
-  String content;
+  std::string content;
   ProtocolUtil::readf(m_stream, kMsgDDragInfo + 4, &fileNum, &content);
 
   m_client->dragInfoReceived(fileNum, content);
@@ -864,13 +864,13 @@ void ServerProxy::fileChunkSending(UInt8 mark, char *data, size_t dataSize)
 
 void ServerProxy::sendDragInfo(UInt32 fileCount, const char *info, size_t size)
 {
-  String data(info, size);
+  std::string data(info, size);
   ProtocolUtil::writef(m_stream, kMsgDDragInfo, fileCount, &data);
 }
 
 void ServerProxy::secureInputNotification()
 {
-  String app;
+  std::string app;
   ProtocolUtil::readf(m_stream, kMsgDSecureInputNotification + 4, &app);
 
   // display this notification on the client
@@ -891,12 +891,12 @@ void ServerProxy::secureInputNotification()
 
 void ServerProxy::setServerLanguages()
 {
-  String serverLanguages;
+  std::string serverLanguages;
   ProtocolUtil::readf(m_stream, kMsgDLanguageSynchronisation + 4, &serverLanguages);
   m_languageManager.setRemoteLanguages(serverLanguages);
 }
 
-void ServerProxy::setActiveServerLanguage(const String &language)
+void ServerProxy::setActiveServerLanguage(const std::string &language)
 {
   if (!language.empty() && std::strlen(language.c_str()) > 0) {
     if (m_serverLanguage != language) {

src/lib/client/ServerProxy.h

@@ -20,7 +20,6 @@
 
 #include "base/Event.h"
 #include "base/Stopwatch.h"
-#include "base/String.h"
 #include "deskflow/clipboard_types.h"
 #include "deskflow/key_types.h"
 #include "deskflow/languages/LanguageManager.h"
@@ -108,7 +107,7 @@ private:
   void leave();
   void setClipboard();
   void grabClipboard();
-  void keyDown(UInt16 id, UInt16 mask, UInt16 button, const String &lang);
+  void keyDown(UInt16 id, UInt16 mask, UInt16 button, const std::string &lang);
   void keyRepeat();
   void keyUp();
   void mouseDown();
@@ -126,7 +125,7 @@ private:
   void handleClipboardSendingEvent(const Event &, void *);
   void secureInputNotification();
   void setServerLanguages();
-  void setActiveServerLanguage(const String &language);
+  void setActiveServerLanguage(const std::string &language);
   void checkMissedLanguages() const;
 
 private:
@@ -151,7 +150,7 @@ private:
 
   MessageParser m_parser;
   IEventQueue *m_events;
-  String m_serverLanguage = "";
+  std::string m_serverLanguage = "";
   bool m_isUserNotifiedAboutLanguageSyncError = false;
   deskflow::languages::LanguageManager m_languageManager;
 };

src/lib/deskflow/App.cpp

@@ -319,7 +319,7 @@ void MinimalApp::loadConfig()
 {
 }
 
-bool MinimalApp::loadConfig(const String &pathname)
+bool MinimalApp::loadConfig(const std::string &pathname)
 {
   return false;
 }

src/lib/deskflow/App.h

@@ -20,7 +20,6 @@
 
 #include "base/EventQueue.h"
 #include "base/Log.h"
-#include "base/String.h"
 #include "common/common.h"
 #include "deskflow/IApp.h"
 #include "ipc/IpcClient.h"
@@ -67,7 +66,7 @@ public:
   virtual void help() = 0;
   virtual void parseArgs(int argc, const char *const *argv) = 0;
   virtual void loadConfig() = 0;
-  virtual bool loadConfig(const String &pathname) = 0;
+  virtual bool loadConfig(const std::string &pathname) = 0;
   virtual const char *daemonInfo() const = 0;
   virtual std::string configSection() const = 0;
 
@@ -165,7 +164,7 @@ public:
   virtual int foregroundStartup(int argc, char **argv) override;
   virtual deskflow::Screen *createScreen() override;
   virtual void loadConfig() override;
-  virtual bool loadConfig(const String &pathname) override;
+  virtual bool loadConfig(const std::string &pathname) override;
   virtual const char *daemonInfo() const override;
   virtual const char *daemonName() const override;
   virtual void parseArgs(int argc, const char *const *argv) override;

src/lib/deskflow/ArgParser.cpp

@@ -18,7 +18,6 @@
 #include "deskflow/ArgParser.h"
 
 #include "base/Log.h"
-#include "base/String.h"
 #include "deskflow/App.h"
 #include "deskflow/ArgsBase.h"
 #include "deskflow/ClientArgs.h"
@@ -284,7 +283,7 @@ bool ArgParser::isArg(
   return false;
 }
 
-void ArgParser::splitCommandString(String &command, std::vector<String> &argv)
+void ArgParser::splitCommandString(std::string &command, std::vector<std::string> &argv)
 {
   if (command.empty()) {
     return;
@@ -297,7 +296,7 @@ void ArgParser::splitCommandString(String &command, std::vector<String> &argv)
   size_t startPos = 0;
   size_t space = command.find(" ", startPos);
 
-  while (space != String::npos) {
+  while (space != std::string::npos) {
     bool ignoreThisSpace = false;
 
     // check if the space is between two double quotes
@@ -308,7 +307,7 @@ void ArgParser::splitCommandString(String &command, std::vector<String> &argv)
     }
 
     if (!ignoreThisSpace) {
-      String subString = command.substr(startPos, space - startPos);
+      std::string subString = command.substr(startPos, space - startPos);
 
       removeDoubleQuotes(subString);
       argv.push_back(subString);
@@ -323,21 +322,21 @@ void ArgParser::splitCommandString(String &command, std::vector<String> &argv)
     }
   }
 
-  String subString = command.substr(startPos, command.size());
+  std::string subString = command.substr(startPos, command.size());
   removeDoubleQuotes(subString);
   argv.push_back(subString);
 }
 
-bool ArgParser::searchDoubleQuotes(String &command, size_t &left, size_t &right, size_t startPos)
+bool ArgParser::searchDoubleQuotes(std::string &command, size_t &left, size_t &right, size_t startPos)
 {
   bool result = false;
-  left = String::npos;
-  right = String::npos;
+  left = std::string::npos;
+  right = std::string::npos;
 
   left = command.find("\"", startPos);
-  if (left != String::npos) {
+  if (left != std::string::npos) {
     right = command.find("\"", left + 1);
-    if (right != String::npos) {
+    if (right != std::string::npos) {
       result = true;
     }
   }
@@ -350,7 +349,7 @@ bool ArgParser::searchDoubleQuotes(String &command, size_t &left, size_t &right,
   return result;
 }
 
-void ArgParser::removeDoubleQuotes(String &arg)
+void ArgParser::removeDoubleQuotes(std::string &arg)
 {
   // if string is surrounded by double quotes, remove them
   if (arg[0] == '\"' && arg[arg.size() - 1] == '\"') {
@@ -358,7 +357,7 @@ void ArgParser::removeDoubleQuotes(String &arg)
   }
 }
 
-const char **ArgParser::getArgv(std::vector<String> &argsArray)
+const char **ArgParser::getArgv(std::vector<std::string> &argsArray)
 {
   size_t argc = argsArray.size();
 
@@ -375,18 +374,19 @@ const char **ArgParser::getArgv(std::vector<String> &argsArray)
   return argv;
 }
 
-String ArgParser::assembleCommand(std::vector<String> &argsArray, String ignoreArg, int parametersRequired)
+std::string
+ArgParser::assembleCommand(std::vector<std::string> &argsArray, std::string ignoreArg, int parametersRequired)
 {
-  String result;
+  std::string result;
 
-  for (std::vector<String>::iterator it = argsArray.begin(); it != argsArray.end(); ++it) {
+  for (std::vector<std::string>::iterator it = argsArray.begin(); it != argsArray.end(); ++it) {
     if (it->compare(ignoreArg) == 0) {
       it = it + parametersRequired;
       continue;
     }
 
     // if there is a space in this arg, use double quotes surround it
-    if ((*it).find(" ") != String::npos) {
+    if ((*it).find(" ") != std::string::npos) {
       (*it).insert(0, "\"");
       (*it).push_back('\"');
     }

src/lib/deskflow/ArgParser.h

@@ -17,9 +17,10 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "common/stdvector.h"
 
+#include <string>
+
 namespace deskflow {
 class ArgsBase;
 class ServerArgs;
@@ -47,11 +48,12 @@ public:
   static bool isArg(
       int argi, int argc, const char *const *argv, const char *name1, const char *name2, int minRequiredParameters = 0
   );
-  static void splitCommandString(String &command, std::vector<String> &argv);
-  static bool searchDoubleQuotes(String &command, size_t &left, size_t &right, size_t startPos = 0);
-  static void removeDoubleQuotes(String &arg);
-  static const char **getArgv(std::vector<String> &argsArray);
-  static String assembleCommand(std::vector<String> &argsArray, String ignoreArg = "", int parametersRequired = 0);
+  static void splitCommandString(std::string &command, std::vector<std::string> &argv);
+  static bool searchDoubleQuotes(std::string &command, size_t &left, size_t &right, size_t startPos = 0);
+  static void removeDoubleQuotes(std::string &arg);
+  static const char **getArgv(std::vector<std::string> &argsArray);
+  static std::string
+  assembleCommand(std::vector<std::string> &argsArray, std::string ignoreArg = "", int parametersRequired = 0);
 
   static deskflow::ArgsBase &argsBase()
   {

src/lib/deskflow/ArgsBase.h

@@ -17,7 +17,7 @@
 
 #pragma once
 
-#include "base/String.h"
+#include <string>
 
 namespace deskflow {
 
@@ -65,7 +65,7 @@ public:
   const char *m_display = nullptr;
 
   /// @brief The name of the current computer
-  String m_name;
+  std::string m_name;
 
   /// @brief Should the app add a tray icon
   bool m_disableTray = false;
@@ -83,19 +83,19 @@ public:
   bool m_shouldExitFail = false;
 
   /// @brief Bind to this address
-  String m_deskflowAddress;
+  std::string m_deskflowAddress;
 
   /// @brief Should the connections be TLS encrypted
   bool m_enableCrypto = false;
 
   /// @brief The dir to load settings from
-  String m_profileDirectory;
+  std::string m_profileDirectory;
 
   /// @brief The dir to load plugins from
-  String m_pluginDirectory;
+  std::string m_pluginDirectory;
 
   /// @brief Contains the location of the TLS certificate file
-  String m_tlsCertFile;
+  std::string m_tlsCertFile;
 
   /// @brief Stop this computer from sleeping
   bool m_preventSleep = false;

src/lib/deskflow/ClientApp.cpp

@@ -23,7 +23,6 @@
 #include "base/Event.h"
 #include "base/IEventQueue.h"
 #include "base/Log.h"
-#include "base/String.h"
 #include "base/TMethodEventJob.h"
 #include "client/Client.h"
 #include "common/constants.h"
@@ -229,7 +228,7 @@ void ClientApp::updateStatus()
   updateStatus("");
 }
 
-void ClientApp::updateStatus(const String &msg)
+void ClientApp::updateStatus(const std::string &msg)
 {
   if (m_taskBarReceiver) {
     m_taskBarReceiver->updateStatus(m_client, msg);
@@ -321,7 +320,7 @@ void ClientApp::handleClientFailed(const Event &e, void *)
   if ((++m_lastServerAddressIndex) < m_client->getLastResolvedAddressesCount()) {
     std::unique_ptr<Client::FailInfo> info(static_cast<Client::FailInfo *>(e.getData()));
 
-    updateStatus(String("Failed to connect to server: ") + info->m_what + " Trying next address...");
+    updateStatus(std::string("Failed to connect to server: ") + info->m_what + " Trying next address...");
     LOG((CLOG_NOTE "failed to connect to server=%s, trying next address", info->m_what.c_str()));
     if (!m_suspended) {
       scheduleClientRestart(nextRestartTimeout());
@@ -336,7 +335,7 @@ void ClientApp::handleClientRefused(const Event &e, void *)
 {
   std::unique_ptr<Client::FailInfo> info(static_cast<Client::FailInfo *>(e.getData()));
 
-  updateStatus(String("Failed to connect to server: ") + info->m_what);
+  updateStatus(std::string("Failed to connect to server: ") + info->m_what);
   if (!args().m_restartable || !info->m_retry) {
     LOG((CLOG_ERR "failed to connect to server: %s", info->m_what.c_str()));
     m_events->addEvent(Event(Event::kQuit));
@@ -359,7 +358,7 @@ void ClientApp::handleClientDisconnected(const Event &, void *)
   updateStatus();
 }
 
-Client *ClientApp::openClient(const String &name, const NetworkAddress &address, deskflow::Screen *screen)
+Client *ClientApp::openClient(const std::string &name, const NetworkAddress &address, deskflow::Screen *screen)
 {
   Client *client = new Client(m_events, name, address, getSocketFactory(), screen, args());
 
@@ -432,7 +431,7 @@ bool ClientApp::startClient()
   } catch (XScreenUnavailable &e) {
     LOG((CLOG_WARN "secondary screen unavailable: %s", e.what()));
     closeClientScreen(clientScreen);
-    updateStatus(String("secondary screen unavailable: ") + e.what());
+    updateStatus(std::string("secondary screen unavailable: ") + e.what());
     retryTime = e.getRetryTime();
   } catch (XScreenOpenFailure &e) {
     LOG((CLOG_CRIT "failed to start client: %s", e.what()));

src/lib/deskflow/ClientApp.h

@@ -50,7 +50,7 @@ public:
   void loadConfig() override
   {
   }
-  bool loadConfig(const String &pathname) override
+  bool loadConfig(const std::string &pathname) override
   {
     return false;
   }
@@ -75,7 +75,7 @@ public:
   //
 
   void updateStatus();
-  void updateStatus(const String &msg);
+  void updateStatus(const std::string &msg);
   void resetRestartTimeout();
   double nextRestartTimeout();
   void handleScreenError(const Event &, void *);
@@ -87,7 +87,7 @@ public:
   void handleClientFailed(const Event &e, void *);
   void handleClientRefused(const Event &e, void *);
   void handleClientDisconnected(const Event &, void *);
-  Client *openClient(const String &name, const NetworkAddress &address, deskflow::Screen *screen);
+  Client *openClient(const std::string &name, const NetworkAddress &address, deskflow::Screen *screen);
   void closeClient(Client *client);
   bool startClient();
   void stopClient();

src/lib/deskflow/ClientTaskBarReceiver.cpp

@@ -38,7 +38,7 @@ ClientTaskBarReceiver::~ClientTaskBarReceiver()
   // do nothing
 }
 
-void ClientTaskBarReceiver::updateStatus(Client *client, const String &errorMsg)
+void ClientTaskBarReceiver::updateStatus(Client *client, const std::string &errorMsg)
 {
   {
     // update our status
@@ -74,7 +74,7 @@ ClientTaskBarReceiver::EState ClientTaskBarReceiver::getStatus() const
   return m_state;
 }
 
-const String &ClientTaskBarReceiver::getErrorMessage() const
+const std::string &ClientTaskBarReceiver::getErrorMessage() const
 {
   return m_errorMessage;
 }

src/lib/deskflow/ClientTaskBarReceiver.h

@@ -19,7 +19,6 @@
 #pragma once
 
 #include "arch/IArchTaskBarReceiver.h"
-#include "base/String.h"
 #include "base/log_outputters.h"
 #include "client/Client.h"
 
@@ -39,9 +38,9 @@ public:
   /*!
   Determine the status and query required information from the client.
   */
-  void updateStatus(Client *, const String &errorMsg);
+  void updateStatus(Client *, const std::string &errorMsg);
 
-  void updateStatus(INode *n, const String &errorMsg)
+  void updateStatus(INode *n, const std::string &errorMsg)
   {
     updateStatus((Client *)n, errorMsg);
   }
@@ -75,7 +74,7 @@ protected:
   EState getStatus() const;
 
   //! Get error message
-  const String &getErrorMessage() const;
+  const std::string &getErrorMessage() const;
 
   //! Quit app
   /*!
@@ -91,8 +90,8 @@ protected:
 
 private:
   EState m_state;
-  String m_errorMessage;
-  String m_server;
+  std::string m_errorMessage;
+  std::string m_server;
   IEventQueue *m_events;
 };
 

src/lib/deskflow/Clipboard.cpp

@@ -53,7 +53,7 @@ bool Clipboard::empty()
   return true;
 }
 
-void Clipboard::add(EFormat format, const String &data)
+void Clipboard::add(EFormat format, const std::string &data)
 {
   assert(m_open);
   assert(m_owner);
@@ -90,18 +90,18 @@ bool Clipboard::has(EFormat format) const
   return m_added[format];
 }
 
-String Clipboard::get(EFormat format) const
+std::string Clipboard::get(EFormat format) const
 {
   assert(m_open);
   return m_data[format];
 }
 
-void Clipboard::unmarshall(const String &data, Time time)
+void Clipboard::unmarshall(const std::string &data, Time time)
 {
   IClipboard::unmarshall(this, data, time);
 }
 
-String Clipboard::marshall() const
+std::string Clipboard::marshall() const
 {
   return IClipboard::marshall(this);
 }

src/lib/deskflow/Clipboard.h

@@ -38,7 +38,7 @@ public:
   Extract marshalled clipboard data and store it in this clipboard.
   Sets the clipboard time to \c time.
   */
-  void unmarshall(const String &data, Time time);
+  void unmarshall(const std::string &data, Time time);
 
   //@}
   //! @name accessors
@@ -49,18 +49,18 @@ public:
   Merge this clipboard's data into a single buffer that can be later
   unmarshalled to restore the clipboard and return the buffer.
   */
-  String marshall() const;
+  std::string marshall() const;
 
   //@}
 
   // IClipboard overrides
   virtual bool empty();
-  virtual void add(EFormat, const String &data);
+  virtual void add(EFormat, const std::string &data);
   virtual bool open(Time) const;
   virtual void close() const;
   virtual Time getTime() const;
   virtual bool has(EFormat) const;
-  virtual String get(EFormat) const;
+  virtual std::string get(EFormat) const;
 
 private:
   mutable bool m_open;
@@ -68,5 +68,5 @@ private:
   bool m_owner;
   Time m_timeOwned;
   bool m_added[kNumFormats];
-  String m_data[kNumFormats];
+  std::string m_data[kNumFormats];
 };

src/lib/deskflow/ClipboardChunk.cpp

@@ -18,6 +18,7 @@
 #include "deskflow/ClipboardChunk.h"
 
 #include "base/Log.h"
+#include "base/String.h"
 #include "deskflow/ProtocolUtil.h"
 #include "deskflow/protocol_types.h"
 #include "io/IStream.h"
@@ -30,7 +31,7 @@ ClipboardChunk::ClipboardChunk(size_t size) : Chunk(size)
   m_dataSize = size - CLIPBOARD_CHUNK_META_SIZE;
 }
 
-ClipboardChunk *ClipboardChunk::start(ClipboardID id, UInt32 sequence, const String &size)
+ClipboardChunk *ClipboardChunk::start(ClipboardID id, UInt32 sequence, const std::string &size)
 {
   size_t sizeLength = size.size();
   ClipboardChunk *start = new ClipboardChunk(sizeLength + CLIPBOARD_CHUNK_META_SIZE);
@@ -45,7 +46,7 @@ ClipboardChunk *ClipboardChunk::start(ClipboardID id, UInt32 sequence, const Str
   return start;
 }
 
-ClipboardChunk *ClipboardChunk::data(ClipboardID id, UInt32 sequence, const String &data)
+ClipboardChunk *ClipboardChunk::data(ClipboardID id, UInt32 sequence, const std::string &data)
 {
   size_t dataSize = data.size();
   ClipboardChunk *chunk = new ClipboardChunk(dataSize + CLIPBOARD_CHUNK_META_SIZE);
@@ -73,10 +74,10 @@ ClipboardChunk *ClipboardChunk::end(ClipboardID id, UInt32 sequence)
   return end;
 }
 
-int ClipboardChunk::assemble(deskflow::IStream *stream, String &dataCached, ClipboardID &id, UInt32 &sequence)
+int ClipboardChunk::assemble(deskflow::IStream *stream, std::string &dataCached, ClipboardID &id, UInt32 &sequence)
 {
   UInt8 mark;
-  String data;
+  std::string data;
 
   if (!ProtocolUtil::readf(stream, kMsgDClipboard + 4, &id, &sequence, &mark, &data)) {
     return kError;
@@ -116,7 +117,7 @@ void ClipboardChunk::send(deskflow::IStream *stream, void *data)
   UInt32 sequence;
   std::memcpy(&sequence, &chunk[1], 4);
   UInt8 mark = chunk[5];
-  String dataChunk(&chunk[6], clipboardData->m_dataSize);
+  std::string dataChunk(&chunk[6], clipboardData->m_dataSize);
 
   switch (mark) {
   case kDataStart:

src/lib/deskflow/ClipboardChunk.h

@@ -17,11 +17,12 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "common/basic_types.h"
 #include "deskflow/Chunk.h"
 #include "deskflow/clipboard_types.h"
 
+#include <string>
+
 #define CLIPBOARD_CHUNK_META_SIZE 7
 
 namespace deskflow {
@@ -33,11 +34,11 @@ class ClipboardChunk : public Chunk
 public:
   ClipboardChunk(size_t size);
 
-  static ClipboardChunk *start(ClipboardID id, UInt32 sequence, const String &size);
-  static ClipboardChunk *data(ClipboardID id, UInt32 sequence, const String &data);
+  static ClipboardChunk *start(ClipboardID id, UInt32 sequence, const std::string &size);
+  static ClipboardChunk *data(ClipboardID id, UInt32 sequence, const std::string &data);
   static ClipboardChunk *end(ClipboardID id, UInt32 sequence);
 
-  static int assemble(deskflow::IStream *stream, String &dataCached, ClipboardID &id, UInt32 &sequence);
+  static int assemble(deskflow::IStream *stream, std::string &dataCached, ClipboardID &id, UInt32 &sequence);
 
   static void send(deskflow::IStream *stream, void *data);
 

src/lib/deskflow/DaemonApp.cpp

@@ -73,13 +73,13 @@ void updateSetting(const IpcMessage &message)
   }
 }
 
-bool isServerCommandLine(const std::vector<String> &cmd)
+bool isServerCommandLine(const std::vector<std::string> &cmd)
 {
   auto isServer = false;
 
   if (cmd.size() > 1) {
-    isServer = (cmd[0].find("deskflow-server") != String::npos) ||
-               (cmd[0].find("deskflow-core") != String::npos && cmd[1] == "server");
+    isServer = (cmd[0].find("deskflow-server") != std::string::npos) ||
+               (cmd[0].find("deskflow-core") != std::string::npos && cmd[1] == "server");
   }
 
   return isServer;
@@ -188,8 +188,8 @@ int DaemonApp::run(int argc, char **argv)
 
     return kExitSuccess;
   } catch (XArch &e) {
-    String message = e.what();
-    if (uninstall && (message.find("The service has not been started") != String::npos)) {
+    std::string message = e.what();
+    if (uninstall && (message.find("The service has not been started") != std::string::npos)) {
       // TODO: if we're keeping this use error code instead (what is it?!).
       // HACK: this message happens intermittently, not sure where from but
       // it's quite misleading for the user. they thing something has gone
@@ -246,7 +246,7 @@ void DaemonApp::mainLoop(bool logToFile, bool foreground)
     // install the platform event queue to handle service stop events.
     m_events->adoptBuffer(new MSWindowsEventQueueBuffer(m_events.get()));
 
-    String command = ARCH->setting("Command");
+    std::string command = ARCH->setting("Command");
     bool elevate = ARCH->setting("Elevate") == "1";
     if (command != "") {
       LOG((CLOG_INFO "using last known command: %s", command.c_str()));
@@ -301,7 +301,7 @@ void DaemonApp::handleIpcMessage(const Event &e, void *)
   switch (m->type()) {
   case IpcMessageType::Command: {
     IpcCommandMessage *cm = static_cast<IpcCommandMessage *>(m);
-    String command = cm->command();
+    std::string command = cm->command();
 
     // if empty quotes, clear.
     if (command == "\"\"") {
@@ -312,7 +312,7 @@ void DaemonApp::handleIpcMessage(const Event &e, void *)
       LOG((CLOG_DEBUG "daemon got new core command"));
       LOG((CLOG_DEBUG2 "new command, elevate=%d command=%s", cm->elevate(), command.c_str()));
 
-      std::vector<String> argsArray;
+      std::vector<std::string> argsArray;
       ArgParser::splitCommandString(command, argsArray);
       ArgParser argParser(NULL);
       const char **argv = argParser.getArgv(argsArray);
@@ -327,7 +327,7 @@ void DaemonApp::handleIpcMessage(const Event &e, void *)
       }
 
       delete[] argv;
-      String logLevel(ArgParser::argsBase().m_logFilter);
+      std::string logLevel(ArgParser::argsBase().m_logFilter);
       if (!logLevel.empty()) {
         try {
           // change log level based on that in the command string
@@ -348,7 +348,7 @@ void DaemonApp::handleIpcMessage(const Event &e, void *)
       ARCH->setting("Command", command);
 
       // TODO: it would be nice to store bools/ints...
-      ARCH->setting("Elevate", String(cm->elevate() ? "1" : "0"));
+      ARCH->setting("Elevate", std::string(cm->elevate() ? "1" : "0"));
     } catch (XArch &e) {
       LOG((CLOG_ERR "failed to save settings, %s", e.what()));
     }
@@ -364,7 +364,7 @@ void DaemonApp::handleIpcMessage(const Event &e, void *)
 
   case IpcMessageType::Hello: {
     IpcHelloMessage *hm = static_cast<IpcHelloMessage *>(m);
-    String type;
+    std::string type;
     switch (hm->clientType()) {
     case IpcClientType::GUI:
       type = "gui";
@@ -387,7 +387,7 @@ void DaemonApp::handleIpcMessage(const Event &e, void *)
     }
 
 #if SYSAPI_WIN32
-    String watchdogStatus = m_watchdog->isProcessActive() ? "active" : "idle";
+    std::string watchdogStatus = m_watchdog->isProcessActive() ? "active" : "idle";
     LOG((CLOG_INFO "service status: %s", watchdogStatus.c_str()));
 #endif
 

src/lib/deskflow/DragInformation.cpp

@@ -28,14 +28,14 @@ DragInformation::DragInformation() : m_filename(), m_filesize(0)
 {
 }
 
-void DragInformation::parseDragInfo(DragFileList &dragFileList, UInt32 fileNum, String data)
+void DragInformation::parseDragInfo(DragFileList &dragFileList, UInt32 fileNum, std::string data)
 {
   size_t startPos = 0;
   size_t findResult1 = 0;
   size_t findResult2 = 0;
   dragFileList.clear();
-  String slash("\\");
-  if (data.find("/", startPos) != string::npos) {
+  std::string slash("\\");
+  if (data.find("/", startPos) != std::string::npos) {
     slash = "/";
   }
 
@@ -51,7 +51,7 @@ void DragInformation::parseDragInfo(DragFileList &dragFileList, UInt32 fileNum,
 
     // set filename
     if (findResult1 - findResult2 > 1) {
-      String filename = data.substr(findResult2 + 1, findResult1 - findResult2 - 1);
+      std::string filename = data.substr(findResult2 + 1, findResult1 - findResult2 - 1);
       DragInformation di;
       di.setFilename(filename);
       dragFileList.push_back(di);
@@ -61,7 +61,7 @@ void DragInformation::parseDragInfo(DragFileList &dragFileList, UInt32 fileNum,
     // set filesize
     findResult2 = data.find(',', startPos);
     if (findResult2 - findResult1 > 1) {
-      String filesize = data.substr(findResult1 + 1, findResult2 - findResult1 - 1);
+      std::string filesize = data.substr(findResult1 + 1, findResult2 - findResult1 - 1);
       size_t size = stringToNum(filesize);
       dragFileList.at(index).setFilesize(size);
     }
@@ -77,31 +77,31 @@ void DragInformation::parseDragInfo(DragFileList &dragFileList, UInt32 fileNum,
   }
 }
 
-String DragInformation::getDragFileExtension(String filename)
+std::string DragInformation::getDragFileExtension(std::string filename)
 {
-  size_t findResult = string::npos;
+  size_t findResult = std::string::npos;
   findResult = filename.find_last_of(".", filename.size());
-  if (findResult != string::npos) {
+  if (findResult != std::string::npos) {
     return filename.substr(findResult + 1, filename.size() - findResult - 1);
   } else {
     return "";
   }
 }
 
-int DragInformation::setupDragInfo(DragFileList &fileList, String &output)
+int DragInformation::setupDragInfo(DragFileList &fileList, std::string &output)
 {
   int size = static_cast<int>(fileList.size());
   for (int i = 0; i < size; ++i) {
     output.append(fileList.at(i).getFilename());
     output.append(",");
-    String filesize = getFileSize(fileList.at(i).getFilename());
+    std::string filesize = getFileSize(fileList.at(i).getFilename());
     output.append(filesize);
     output.append(",");
   }
   return size;
 }
 
-bool DragInformation::isFileValid(String filename)
+bool DragInformation::isFileValid(std::string filename)
 {
   bool result = false;
   std::fstream file(filename.c_str(), ios::in | ios::binary);
@@ -115,7 +115,7 @@ bool DragInformation::isFileValid(String filename)
   return result;
 }
 
-size_t DragInformation::stringToNum(String &str)
+size_t DragInformation::stringToNum(std::string &str)
 {
   istringstream iss(str.c_str());
   size_t size;
@@ -123,7 +123,7 @@ size_t DragInformation::stringToNum(String &str)
   return size;
 }
 
-String DragInformation::getFileSize(String &filename)
+std::string DragInformation::getFileSize(std::string &filename)
 {
   std::fstream file(filename.c_str(), ios::in | ios::binary);
 

src/lib/deskflow/DragInformation.h

@@ -18,9 +18,10 @@
 #pragma once
 
 #include "base/EventTypes.h"
-#include "base/String.h"
 #include "common/stdvector.h"
 
+#include <string>
+
 class DragInformation;
 using DragFileList = std::vector<DragInformation>;
 
@@ -32,11 +33,11 @@ public:
   {
   }
 
-  String &getFilename()
+  std::string &getFilename()
   {
     return m_filename;
   }
-  void setFilename(String &name)
+  void setFilename(std::string &name)
   {
     m_filename = name;
   }
@@ -49,20 +50,20 @@ public:
     m_filesize = size;
   }
 
-  static void parseDragInfo(DragFileList &dragFileList, UInt32 fileNum, String data);
-  static String getDragFileExtension(String filename);
+  static void parseDragInfo(DragFileList &dragFileList, UInt32 fileNum, std::string data);
+  static std::string getDragFileExtension(std::string filename);
   // helper function to setup drag info
   // example: filename1,filesize1,filename2,filesize2,
   // return file count
-  static int setupDragInfo(DragFileList &fileList, String &output);
+  static int setupDragInfo(DragFileList &fileList, std::string &output);
 
-  static bool isFileValid(String filename);
+  static bool isFileValid(std::string filename);
 
 private:
-  static size_t stringToNum(String &str);
-  static String getFileSize(String &filename);
+  static size_t stringToNum(std::string &str);
+  static std::string getFileSize(std::string &filename);
 
 private:
-  String m_filename;
+  std::string m_filename;
   size_t m_filesize;
 };

src/lib/deskflow/DropHelper.cpp

@@ -21,13 +21,13 @@
 
 #include <fstream>
 
-void DropHelper::writeToDir(const String &destination, DragFileList &fileList, String &data)
+void DropHelper::writeToDir(const std::string &destination, DragFileList &fileList, std::string &data)
 {
   LOG((CLOG_DEBUG "dropping file, files=%i target=%s", fileList.size(), destination.c_str()));
 
   if (!destination.empty() && fileList.size() > 0) {
     std::fstream file;
-    String dropTarget = destination;
+    std::string dropTarget = destination;
 #ifdef SYSAPI_WIN32
     dropTarget.append("\\");
 #else

src/lib/deskflow/DropHelper.h

@@ -17,11 +17,10 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "deskflow/DragInformation.h"
 
 class DropHelper
 {
 public:
-  static void writeToDir(const String &destination, DragFileList &fileList, String &data);
+  static void writeToDir(const std::string &destination, DragFileList &fileList, std::string &data);
 };

src/lib/deskflow/FileChunk.cpp

@@ -19,6 +19,7 @@
 
 #include "base/Log.h"
 #include "base/Stopwatch.h"
+#include "base/String.h"
 #include "deskflow/ProtocolUtil.h"
 #include "deskflow/protocol_types.h"
 #include "io/IStream.h"
@@ -30,7 +31,7 @@ FileChunk::FileChunk(size_t size) : Chunk(size)
   m_dataSize = size - FILE_CHUNK_META_SIZE;
 }
 
-FileChunk *FileChunk::start(const String &size)
+FileChunk *FileChunk::start(const std::string &size)
 {
   size_t sizeLength = size.size();
   FileChunk *start = new FileChunk(sizeLength + FILE_CHUNK_META_SIZE);
@@ -63,11 +64,11 @@ FileChunk *FileChunk::end()
   return end;
 }
 
-int FileChunk::assemble(deskflow::IStream *stream, String &dataReceived, size_t &expectedSize)
+int FileChunk::assemble(deskflow::IStream *stream, std::string &dataReceived, size_t &expectedSize)
 {
   // parse
   UInt8 mark = 0;
-  String content;
+  std::string content;
   static size_t receivedDataSize;
   static double elapsedTime;
   static Stopwatch stopwatch;
@@ -130,7 +131,7 @@ int FileChunk::assemble(deskflow::IStream *stream, String &dataReceived, size_t
 
 void FileChunk::send(deskflow::IStream *stream, UInt8 mark, char *data, size_t dataSize)
 {
-  String chunk(data, dataSize);
+  std::string chunk(data, dataSize);
 
   switch (mark) {
   case kDataStart:

src/lib/deskflow/FileChunk.h

@@ -17,10 +17,11 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "common/basic_types.h"
 #include "deskflow/Chunk.h"
 
+#include <string>
+
 #define FILE_CHUNK_META_SIZE 2
 
 namespace deskflow {
@@ -32,9 +33,9 @@ class FileChunk : public Chunk
 public:
   FileChunk(size_t size);
 
-  static FileChunk *start(const String &size);
+  static FileChunk *start(const std::string &size);
   static FileChunk *data(UInt8 *data, size_t dataSize);
   static FileChunk *end();
-  static int assemble(deskflow::IStream *stream, String &dataCached, size_t &expectedSize);
+  static int assemble(deskflow::IStream *stream, std::string &dataCached, size_t &expectedSize);
   static void send(deskflow::IStream *stream, UInt8 mark, char *data, size_t dataSize);
 };

src/lib/deskflow/IAppUtil.h

@@ -18,10 +18,12 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "common/IInterface.h"
 #include "deskflow/IApp.h"
 
+#include <string>
+#include <vector>
+
 class IAppUtil : public IInterface
 {
 public:
@@ -30,7 +32,7 @@ public:
   virtual int run(int argc, char **argv) = 0;
   virtual void beforeAppExit() = 0;
   virtual void startNode() = 0;
-  virtual std::vector<String> getKeyboardLayoutList() = 0;
-  virtual String getCurrentLanguageCode() = 0;
-  virtual void showNotification(const String &title, const String &text) const = 0;
+  virtual std::vector<std::string> getKeyboardLayoutList() = 0;
+  virtual std::string getCurrentLanguageCode() = 0;
+  virtual void showNotification(const std::string &title, const std::string &text) const = 0;
 };

src/lib/deskflow/IClient.h

@@ -18,13 +18,14 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "deskflow/IScreen.h"
 #include "deskflow/clipboard_types.h"
 #include "deskflow/key_types.h"
 #include "deskflow/mouse_types.h"
 #include "deskflow/option_types.h"
 
+#include <string>
+
 //! Client interface
 /*!
 This interface defines the methods necessary for the server to
@@ -86,14 +87,14 @@ public:
   synthesize an up or repeat for the same client key synthesized by
   keyDown().
   */
-  virtual void keyDown(KeyID id, KeyModifierMask, KeyButton, const String &) = 0;
+  virtual void keyDown(KeyID id, KeyModifierMask, KeyButton, const std::string &) = 0;
 
   //! Notify of key repeat
   /*!
   Synthesize key events to generate a press and release of key \c id
   \c count times.  If possible match the given modifier mask.
   */
-  virtual void keyRepeat(KeyID id, KeyModifierMask, SInt32 count, KeyButton, const String &lang) = 0;
+  virtual void keyRepeat(KeyID id, KeyModifierMask, SInt32 count, KeyButton, const std::string &lang) = 0;
 
   //! Notify of key release
   /*!
@@ -161,7 +162,7 @@ public:
   /*!
   Return the client's name.
   */
-  virtual String getName() const = 0;
+  virtual std::string getName() const = 0;
 
   //@}
 

src/lib/deskflow/IClipboard.cpp

@@ -23,7 +23,7 @@
 // IClipboard
 //
 
-void IClipboard::unmarshall(IClipboard *clipboard, const String &data, Time time)
+void IClipboard::unmarshall(IClipboard *clipboard, const std::string &data, Time time)
 {
   assert(clipboard != NULL);
 
@@ -51,7 +51,7 @@ void IClipboard::unmarshall(IClipboard *clipboard, const String &data, Time time
       // or server supports more clipboard formats than the other
       // then one of them will get a format >= kNumFormats here.
       if (format < IClipboard::kNumFormats) {
-        clipboard->add(format, String(index, size));
+        clipboard->add(format, std::string(index, size));
       }
       index += size;
     }
@@ -61,7 +61,7 @@ void IClipboard::unmarshall(IClipboard *clipboard, const String &data, Time time
   }
 }
 
-String IClipboard::marshall(const IClipboard *clipboard)
+std::string IClipboard::marshall(const IClipboard *clipboard)
 {
   // return data format:
   // 4 bytes => number of formats included
@@ -72,9 +72,9 @@ String IClipboard::marshall(const IClipboard *clipboard)
 
   assert(clipboard != NULL);
 
-  String data;
+  std::string data;
 
-  std::vector<String> formatData;
+  std::vector<std::string> formatData;
   formatData.resize(IClipboard::kNumFormats);
   // FIXME -- use current time
   if (clipboard->open(0)) {
@@ -148,7 +148,7 @@ UInt32 IClipboard::readUInt32(const char *buf)
          (static_cast<UInt32>(ubuf[2]) << 8) | static_cast<UInt32>(ubuf[3]);
 }
 
-void IClipboard::writeUInt32(String *buf, UInt32 v)
+void IClipboard::writeUInt32(std::string *buf, UInt32 v)
 {
   *buf += static_cast<UInt8>((v >> 24) & 0xff);
   *buf += static_cast<UInt8>((v >> 16) & 0xff);

src/lib/deskflow/IClipboard.h

@@ -19,9 +19,10 @@
 #pragma once
 
 #include "base/EventTypes.h"
-#include "base/String.h"
 #include "common/IInterface.h"
 
+#include <string>
+
 //! Clipboard interface
 /*!
 This interface defines the methods common to all clipboards.
@@ -81,7 +82,7 @@ public:
   Add data in the given format to the clipboard.  May only be
   called after a successful empty().
   */
-  virtual void add(EFormat, const String &data) = 0;
+  virtual void add(EFormat, const std::string &data) = 0;
 
   //@}
   //! @name accessors
@@ -127,21 +128,21 @@ public:
   if there is no data in that format.  Must be called between
   a successful open() and close().
   */
-  virtual String get(EFormat) const = 0;
+  virtual std::string get(EFormat) const = 0;
 
   //! Marshall clipboard data
   /*!
   Merge \p clipboard's data into a single buffer that can be later
   unmarshalled to restore the clipboard and return the buffer.
   */
-  static String marshall(const IClipboard *clipboard);
+  static std::string marshall(const IClipboard *clipboard);
 
   //! Unmarshall clipboard data
   /*!
   Extract marshalled clipboard data and store it in \p clipboard.
   Sets the clipboard time to \c time.
   */
-  static void unmarshall(IClipboard *clipboard, const String &data, Time time);
+  static void unmarshall(IClipboard *clipboard, const std::string &data, Time time);
 
   //! Copy clipboard
   /*!
@@ -166,5 +167,5 @@ public:
 
 private:
   static UInt32 readUInt32(const char *);
-  static void writeUInt32(String *, UInt32);
+  static void writeUInt32(std::string *, UInt32);
 };

src/lib/deskflow/IKeyState.cpp

@@ -47,10 +47,10 @@ IKeyState::KeyInfo *IKeyState::KeyInfo::alloc(KeyID id, KeyModifierMask mask, Ke
 }
 
 IKeyState::KeyInfo *IKeyState::KeyInfo::alloc(
-    KeyID id, KeyModifierMask mask, KeyButton button, SInt32 count, const std::set<String> &destinations
+    KeyID id, KeyModifierMask mask, KeyButton button, SInt32 count, const std::set<std::string> &destinations
 )
 {
-  String screens = join(destinations);
+  std::string screens = join(destinations);
   const char *buffer = screens.c_str();
 
   // build structure
@@ -82,7 +82,7 @@ bool IKeyState::KeyInfo::isDefault(const char *screens)
   return (screens == NULL || screens[0] == '\0');
 }
 
-bool IKeyState::KeyInfo::contains(const char *screens, const String &name)
+bool IKeyState::KeyInfo::contains(const char *screens, const std::string &name)
 {
   // special cases
   if (isDefault(screens)) {
@@ -93,7 +93,7 @@ bool IKeyState::KeyInfo::contains(const char *screens, const String &name)
   }
 
   // search
-  String match;
+  std::string match;
   match.reserve(name.size() + 2);
   match += ":";
   match += name;
@@ -109,12 +109,12 @@ bool IKeyState::KeyInfo::equal(const KeyInfo *a, const KeyInfo *b)
   );
 }
 
-String IKeyState::KeyInfo::join(const std::set<String> &destinations)
+std::string IKeyState::KeyInfo::join(const std::set<std::string> &destinations)
 {
   // collect destinations into a string.  names are surrounded by ':'
   // which makes searching easy.  the string is empty if there are no
   // destinations and "*" means all destinations.
-  String screens;
+  std::string screens;
   for (auto i = destinations.begin(); i != destinations.end(); ++i) {
     if (*i == "*") {
       screens = "*";
@@ -130,7 +130,7 @@ String IKeyState::KeyInfo::join(const std::set<String> &destinations)
   return screens;
 }
 
-void IKeyState::KeyInfo::split(const char *screens, std::set<String> &dst)
+void IKeyState::KeyInfo::split(const char *screens, std::set<std::string> &dst)
 {
   dst.clear();
   if (isDefault(screens)) {
@@ -144,7 +144,7 @@ void IKeyState::KeyInfo::split(const char *screens, std::set<String> &dst)
   const char *i = screens + 1;
   while (*i != '\0') {
     const char *j = strchr(i, ':');
-    dst.insert(String(i, j - i));
+    dst.insert(std::string(i, j - i));
     i = j + 1;
   }
 }

src/lib/deskflow/IKeyState.h

@@ -21,7 +21,6 @@
 #include "base/Event.h"
 #include "base/EventTypes.h"
 #include "base/IEventQueue.h"
-#include "base/String.h"
 #include "common/IInterface.h"
 #include "common/stdset.h"
 #include "deskflow/key_types.h"
@@ -46,14 +45,14 @@ public:
   {
   public:
     static KeyInfo *alloc(KeyID, KeyModifierMask, KeyButton, SInt32 count);
-    static KeyInfo *alloc(KeyID, KeyModifierMask, KeyButton, SInt32 count, const std::set<String> &destinations);
+    static KeyInfo *alloc(KeyID, KeyModifierMask, KeyButton, SInt32 count, const std::set<std::string> &destinations);
     static KeyInfo *alloc(const KeyInfo &);
 
     static bool isDefault(const char *screens);
-    static bool contains(const char *screens, const String &name);
+    static bool contains(const char *screens, const std::string &name);
     static bool equal(const KeyInfo *, const KeyInfo *);
-    static String join(const std::set<String> &destinations);
-    static void split(const char *screens, std::set<String> &);
+    static std::string join(const std::set<std::string> &destinations);
+    static void split(const char *screens, std::set<std::string> &);
 
   public:
     KeyID m_key;
@@ -95,13 +94,14 @@ public:
   /*!
   Synthesizes a key press event and updates the key state.
   */
-  virtual void fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const String &lang) = 0;
+  virtual void fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const std::string &lang) = 0;
 
   //! Fake a key repeat
   /*!
   Synthesizes a key repeat event and updates the key state.
   */
-  virtual bool fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const String &lang) = 0;
+  virtual bool
+  fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const std::string &lang) = 0;
 
   //! Fake a key release
   /*!

src/lib/deskflow/IPlatformScreen.h

@@ -146,7 +146,7 @@ public:
   On MacOS check which app causes a secure input state to be enabled. No
   alternative on other platforms
   */
-  virtual String getSecureInputApp() const = 0;
+  virtual std::string getSecureInputApp() const = 0;
 
   //@}
   //! @name accessors
@@ -187,8 +187,9 @@ public:
   virtual void updateKeyMap() = 0;
   virtual void updateKeyState() = 0;
   virtual void setHalfDuplexMask(KeyModifierMask) = 0;
-  virtual void fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const String &lang) = 0;
-  virtual bool fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const String &lang) = 0;
+  virtual void fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const std::string &lang) = 0;
+  virtual bool
+  fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const std::string &lang) = 0;
   virtual bool fakeKeyUp(KeyButton button) = 0;
   virtual void fakeAllKeysUp() = 0;
   virtual bool fakeCtrlAltDel() = 0;
@@ -199,13 +200,13 @@ public:
   virtual SInt32 pollActiveGroup() const = 0;
   virtual void pollPressedKeys(KeyButtonSet &pressedKeys) const = 0;
 
-  virtual String &getDraggingFilename() = 0;
+  virtual std::string &getDraggingFilename() = 0;
   virtual void clearDraggingFilename() = 0;
   virtual bool isDraggingStarted() = 0;
   virtual bool isFakeDraggingStarted() = 0;
 
   virtual void fakeDraggingFiles(DragFileList fileList) = 0;
-  virtual const String &getDropTarget() const = 0;
+  virtual const std::string &getDropTarget() const = 0;
 
 protected:
   //! Handle system event

src/lib/deskflow/KeyMap.cpp

@@ -243,7 +243,7 @@ void KeyMap::foreachKey(ForeachKeyCallback cb, void *userData)
 
 const KeyMap::KeyItem *KeyMap::mapKey(
     Keystrokes &keys, KeyID id, SInt32 group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
-    KeyModifierMask desiredMask, bool isAutoRepeat, const String &lang
+    KeyModifierMask desiredMask, bool isAutoRepeat, const std::string &lang
 ) const
 {
   LOG(
@@ -310,12 +310,12 @@ const KeyMap::KeyItem *KeyMap::mapKey(
   return item;
 }
 
-void KeyMap::setLanguageData(std::vector<String> layouts)
+void KeyMap::setLanguageData(std::vector<std::string> layouts)
 {
   m_keyboardLayouts = std::move(layouts);
 }
 
-SInt32 KeyMap::getLanguageGroupID(SInt32 group, const String &lang) const
+SInt32 KeyMap::getLanguageGroupID(SInt32 group, const std::string &lang) const
 {
   SInt32 id = group;
 
@@ -488,7 +488,7 @@ void KeyMap::setModifierKeys()
 
 const KeyMap::KeyItem *KeyMap::mapCommandKey(
     Keystrokes &keys, KeyID id, SInt32 group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
-    KeyModifierMask desiredMask, bool isAutoRepeat, const String &lang
+    KeyModifierMask desiredMask, bool isAutoRepeat, const std::string &lang
 ) const
 {
   static const KeyModifierMask s_overrideModifiers = 0xffffu;
@@ -591,7 +591,7 @@ KeyMap::getKeyItemList(const KeyMap::KeyGroupTable &keyGroupTable, SInt32 group,
 
 const KeyMap::KeyItem *KeyMap::mapCharacterKey(
     Keystrokes &keys, KeyID id, SInt32 group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
-    KeyModifierMask desiredMask, bool isAutoRepeat, const String &lang
+    KeyModifierMask desiredMask, bool isAutoRepeat, const std::string &lang
 ) const
 {
   // find KeySym in table
@@ -641,7 +641,7 @@ const KeyMap::KeyItem *KeyMap::mapCharacterKey(
   return &keyItem;
 }
 
-void KeyMap::addGroupToKeystroke(Keystrokes &keys, SInt32 &group, const String &lang) const
+void KeyMap::addGroupToKeystroke(Keystrokes &keys, SInt32 &group, const std::string &lang) const
 {
   group = getLanguageGroupID(group, lang);
   keys.push_back(Keystroke(group, true, false));
@@ -649,7 +649,7 @@ void KeyMap::addGroupToKeystroke(Keystrokes &keys, SInt32 &group, const String &
 
 const KeyMap::KeyItem *KeyMap::mapModifierKey(
     Keystrokes &keys, KeyID id, SInt32 group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
-    KeyModifierMask desiredMask, bool isAutoRepeat, const String &lang
+    KeyModifierMask desiredMask, bool isAutoRepeat, const std::string &lang
 ) const
 {
   return mapCharacterKey(keys, id, group, activeModifiers, currentState, desiredMask, isAutoRepeat, lang);
@@ -708,7 +708,7 @@ const KeyMap::KeyItem *KeyMap::keyForModifier(KeyButton button, SInt32 group, SI
 bool KeyMap::keysForKeyItem(
     const KeyItem &keyItem, SInt32 &group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
     KeyModifierMask desiredState, KeyModifierMask overrideModifiers, bool isAutoRepeat, Keystrokes &keystrokes,
-    const String &lang
+    const std::string &lang
 ) const
 {
   static const KeyModifierMask s_notRequiredMask = KeyModifierAltGr | KeyModifierNumLock | KeyModifierScrollLock;
@@ -1090,12 +1090,12 @@ KeyID KeyMap::getDeadKey(KeyID key)
   }
 }
 
-String KeyMap::formatKey(KeyID key, KeyModifierMask mask)
+std::string KeyMap::formatKey(KeyID key, KeyModifierMask mask)
 {
   // initialize tables
   initKeyNameMaps();
 
-  String x;
+  std::string x;
   for (SInt32 i = 0; i < kKeyModifierNumBits; ++i) {
     KeyModifierMask mod = (1u << i);
     if ((mask & mod) != 0 && s_modifierToNameMap->count(mod) > 0) {
@@ -1120,7 +1120,7 @@ String KeyMap::formatKey(KeyID key, KeyModifierMask mask)
   return x;
 }
 
-bool KeyMap::parseKey(const String &x, KeyID &key)
+bool KeyMap::parseKey(const std::string &x, KeyID &key)
 {
   // initialize tables
   initKeyNameMaps();
@@ -1152,20 +1152,20 @@ bool KeyMap::parseKey(const String &x, KeyID &key)
   return true;
 }
 
-bool KeyMap::parseModifiers(String &x, KeyModifierMask &mask)
+bool KeyMap::parseModifiers(std::string &x, KeyModifierMask &mask)
 {
   // initialize tables
   initKeyNameMaps();
 
   mask = 0;
-  String::size_type tb = x.find_first_not_of(" \t", 0);
-  while (tb != String::npos) {
+  std::string::size_type tb = x.find_first_not_of(" \t", 0);
+  while (tb != std::string::npos) {
     // get next component
-    String::size_type te = x.find_first_of(" \t+)", tb);
-    if (te == String::npos) {
+    std::string::size_type te = x.find_first_of(" \t+)", tb);
+    if (te == std::string::npos) {
       te = x.size();
     }
-    String c = x.substr(tb, te - tb);
+    std::string c = x.substr(tb, te - tb);
     if (c.empty()) {
       // missing component
       return false;
@@ -1181,9 +1181,9 @@ bool KeyMap::parseModifiers(String &x, KeyModifierMask &mask)
     } else {
       // unknown string
       x.erase(0, tb);
-      String::size_type tb = x.find_first_not_of(" \t");
-      String::size_type te = x.find_last_not_of(" \t");
-      if (tb == String::npos) {
+      std::string::size_type tb = x.find_first_not_of(" \t");
+      std::string::size_type te = x.find_last_not_of(" \t");
+      if (tb == std::string::npos) {
         x = "";
       } else {
         x = x.substr(tb, te - tb + 1);
@@ -1193,7 +1193,7 @@ bool KeyMap::parseModifiers(String &x, KeyModifierMask &mask)
 
     // check for '+' or end of string
     tb = x.find_first_not_of(" \t", te);
-    if (tb != String::npos) {
+    if (tb != std::string::npos) {
       if (x[tb] != '+') {
         // expected '+'
         return false;

src/lib/deskflow/KeyMap.h

@@ -225,10 +225,10 @@ public:
   */
   virtual const KeyItem *mapKey(
       Keystrokes &keys, KeyID id, SInt32 group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
-      KeyModifierMask desiredMask, bool isAutoRepeat, const String &lang
+      KeyModifierMask desiredMask, bool isAutoRepeat, const std::string &lang
   ) const;
 
-  void setLanguageData(std::vector<String> layouts);
+  void setLanguageData(std::vector<std::string> layouts);
 
   //! Get number of groups
   /*!
@@ -310,14 +310,14 @@ public:
   Converts a key and modifier mask into a string representing the
   combination.
   */
-  static String formatKey(KeyID key, KeyModifierMask);
+  static std::string formatKey(KeyID key, KeyModifierMask);
 
   //! Parse a string into a key
   /*!
   Converts a string into a key.  Returns \c true on success and \c false
   if the string cannot be parsed.
   */
-  static bool parseKey(const String &, KeyID &);
+  static bool parseKey(const std::string &, KeyID &);
 
   //! Parse a string into a modifier mask
   /*!
@@ -326,7 +326,7 @@ public:
   remaining leading and trailing whitespace is stripped from the input
   string.
   */
-  static bool parseModifiers(String &, KeyModifierMask &);
+  static bool parseModifiers(std::string &, KeyModifierMask &);
 
   //@}
 
@@ -369,7 +369,7 @@ private:
   // entries since they don't make sense as hotkeys.
   const KeyItem *mapCommandKey(
       Keystrokes &keys, KeyID id, SInt32 group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
-      KeyModifierMask desiredMask, bool isAutoRepeat, const String &lang
+      KeyModifierMask desiredMask, bool isAutoRepeat, const std::string &lang
   ) const;
 
   // maps a character key.  a character key is trying to synthesize a
@@ -377,13 +377,13 @@ private:
   // used to do it.
   const KeyItem *mapCharacterKey(
       Keystrokes &keys, KeyID id, SInt32 group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
-      KeyModifierMask desiredMask, bool isAutoRepeat, const String &lang
+      KeyModifierMask desiredMask, bool isAutoRepeat, const std::string &lang
   ) const;
 
   // maps a modifier key
   const KeyItem *mapModifierKey(
       Keystrokes &keys, KeyID id, SInt32 group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
-      KeyModifierMask desiredMask, bool isAutoRepeat, const String &lang
+      KeyModifierMask desiredMask, bool isAutoRepeat, const std::string &lang
   ) const;
 
   // returns the index into \p entryList of the KeyItemList requiring
@@ -403,7 +403,7 @@ private:
   bool keysForKeyItem(
       const KeyItem &keyItem, SInt32 &group, ModifierToKeys &activeModifiers, KeyModifierMask &currentState,
       KeyModifierMask desiredState, KeyModifierMask overrideModifiers, bool isAutoRepeat, Keystrokes &keystrokes,
-      const String &lang
+      const std::string &lang
   ) const;
 
   // fills \p keystrokes with the keys to synthesize the modifiers
@@ -442,9 +442,9 @@ private:
   // Ways to synthesize a KeyID over multiple keyboard groups
   using KeyGroupTable = std::vector<KeyEntryList>;
 
-  void addGroupToKeystroke(Keystrokes &keys, SInt32 &group, const String &lang) const;
+  void addGroupToKeystroke(Keystrokes &keys, SInt32 &group, const std::string &lang) const;
 
-  SInt32 getLanguageGroupID(SInt32 group, const String &lang) const;
+  SInt32 getLanguageGroupID(SInt32 group, const std::string &lang) const;
   const KeyItemList *
   getKeyItemList(const KeyGroupTable &keyGroupTable, SInt32 group, KeyModifierMask desiredMask) const;
 
@@ -469,10 +469,10 @@ private:
   using KeyButtonSet = std::set<KeyButton>;
 
   // Key maps for parsing/formatting
-  using NameToKeyMap = std::map<String, KeyID, deskflow::string::CaselessCmp>;
-  using NameToModifierMap = std::map<String, KeyModifierMask, deskflow::string::CaselessCmp>;
-  using KeyToNameMap = std::map<KeyID, String>;
-  using ModifierToNameMap = std::map<KeyModifierMask, String>;
+  using NameToKeyMap = std::map<std::string, KeyID, deskflow::string::CaselessCmp>;
+  using NameToModifierMap = std::map<std::string, KeyModifierMask, deskflow::string::CaselessCmp>;
+  using KeyToNameMap = std::map<KeyID, std::string>;
+  using ModifierToNameMap = std::map<KeyModifierMask, std::string>;
 
   // KeyID info
   KeyIDMap m_keyIDMap;
@@ -490,7 +490,7 @@ private:
   KeyItem m_modifierKeyItem;
 
   // Language sync data
-  std::vector<String> m_keyboardLayouts;
+  std::vector<std::string> m_keyboardLayouts;
 
   // parsing/formatting tables
   static NameToKeyMap *s_nameToKeyMap;

src/lib/deskflow/KeyState.cpp

@@ -653,7 +653,7 @@ static const KeyID s_numpadTable[] = {
 // KeyState
 //
 
-KeyState::KeyState(IEventQueue *events, std::vector<String> layouts, bool isLangSyncEnabled)
+KeyState::KeyState(IEventQueue *events, std::vector<std::string> layouts, bool isLangSyncEnabled)
     : IKeyState(events),
       m_keyMapPtr(new deskflow::KeyMap()),
       m_keyMap(*m_keyMapPtr),
@@ -665,7 +665,9 @@ KeyState::KeyState(IEventQueue *events, std::vector<String> layouts, bool isLang
   init();
 }
 
-KeyState::KeyState(IEventQueue *events, deskflow::KeyMap &keyMap, std::vector<String> layouts, bool isLangSyncEnabled)
+KeyState::KeyState(
+    IEventQueue *events, deskflow::KeyMap &keyMap, std::vector<std::string> layouts, bool isLangSyncEnabled
+)
     : IKeyState(events),
       m_keyMapPtr(0),
       m_keyMap(keyMap),
@@ -801,7 +803,7 @@ void KeyState::setHalfDuplexMask(KeyModifierMask mask)
   }
 }
 
-void KeyState::fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton serverID, const String &lang)
+void KeyState::fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton serverID, const std::string &lang)
 {
   // if this server key is already down then this is probably a
   // mis-reported autorepeat.
@@ -848,7 +850,7 @@ void KeyState::fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton serverID, c
   fakeKeys(keys, 1);
 }
 
-bool KeyState::fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton serverID, const String &lang)
+bool KeyState::fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton serverID, const std::string &lang)
 {
   LOG((CLOG_DEBUG2 "fakeKeyRepeat"));
   serverID &= kButtonMask;

src/lib/deskflow/KeyState.h

@@ -29,8 +29,8 @@ platform specific methods.
 class KeyState : public IKeyState
 {
 public:
-  KeyState(IEventQueue *events, std::vector<String> layouts, bool isLangSyncEnabled);
-  KeyState(IEventQueue *events, deskflow::KeyMap &keyMap, std::vector<String> layouts, bool isLangSyncEnabled);
+  KeyState(IEventQueue *events, std::vector<std::string> layouts, bool isLangSyncEnabled);
+  KeyState(IEventQueue *events, deskflow::KeyMap &keyMap, std::vector<std::string> layouts, bool isLangSyncEnabled);
   virtual ~KeyState();
 
   //! @name manipulators
@@ -69,8 +69,8 @@ public:
   }
   void updateKeyState() override;
   void setHalfDuplexMask(KeyModifierMask) override;
-  void fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const String &lang) override;
-  bool fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const String &lang) override;
+  void fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const std::string &lang) override;
+  bool fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const std::string &lang) override;
   bool fakeKeyUp(KeyButton button) override;
   void fakeAllKeysUp() override;
   bool fakeMediaKey(KeyID id) override;

src/lib/deskflow/PlatformScreen.cpp

@@ -49,12 +49,14 @@ void PlatformScreen::setHalfDuplexMask(KeyModifierMask mask)
   getKeyState()->setHalfDuplexMask(mask);
 }
 
-void PlatformScreen::fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const String &lang)
+void PlatformScreen::fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const std::string &lang)
 {
   getKeyState()->fakeKeyDown(id, mask, button, lang);
 }
 
-bool PlatformScreen::fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const String &lang)
+bool PlatformScreen::fakeKeyRepeat(
+    KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const std::string &lang
+)
 {
   return getKeyState()->fakeKeyRepeat(id, mask, count, button, lang);
 }

src/lib/deskflow/PlatformScreen.h

@@ -64,8 +64,8 @@ public:
   virtual void updateKeyMap();
   virtual void updateKeyState();
   virtual void setHalfDuplexMask(KeyModifierMask);
-  virtual void fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const String &);
-  virtual bool fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const String &lang);
+  virtual void fakeKeyDown(KeyID id, KeyModifierMask mask, KeyButton button, const std::string &);
+  virtual bool fakeKeyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const std::string &lang);
   virtual bool fakeKeyUp(KeyButton button);
   virtual void fakeAllKeysUp();
   virtual bool fakeCtrlAltDel();
@@ -84,7 +84,7 @@ public:
   {
     return m_fakeDraggingStarted;
   }
-  virtual String &getDraggingFilename()
+  virtual std::string &getDraggingFilename()
   {
     return m_draggingFilename;
   }
@@ -112,7 +112,7 @@ public:
   {
     throw std::runtime_error("fakeDraggingFiles not implemented");
   }
-  virtual const String &getDropTarget() const
+  virtual const std::string &getDropTarget() const
   {
     throw std::runtime_error("getDropTarget not implemented");
   }
@@ -143,7 +143,7 @@ protected:
   virtual SInt32 mapClientScrollDirection(SInt32) const;
 
 protected:
-  String m_draggingFilename;
+  std::string m_draggingFilename;
   bool m_draggingStarted;
   bool m_fakeDraggingStarted;
 

src/lib/deskflow/ProtocolUtil.cpp

@@ -67,7 +67,7 @@ template <typename T> void writeVectorInt(const std::vector<T> *VectorData, std:
   }
 }
 
-void writeString(const String *StringData, std::vector<UInt8> &Buffer)
+void writeString(const std::string *StringData, std::vector<UInt8> &Buffer)
 {
   const UInt32 len = (StringData != NULL) ? (UInt32)StringData->size() : 0;
   writeInt(len, sizeof(len), Buffer);
@@ -200,7 +200,7 @@ void ProtocolUtil::vreadf(deskflow::IStream *stream, const char *fmt, va_list ar
       }
 
       case 's': {
-        String *destination = va_arg(args, String *);
+        std::string *destination = va_arg(args, std::string *);
 
         if (len > PROTOCOL_MAX_STRING_LENGTH) {
           LOG((CLOG_ERR "read: string length exceeds maximum allowed size: %u", len));
@@ -271,7 +271,7 @@ UInt32 ProtocolUtil::getLength(const char *fmt, va_list args)
 
       case 's':
         assert(len == 0);
-        len = (UInt32)(va_arg(args, String *))->size() + 4;
+        len = (UInt32)(va_arg(args, std::string *))->size() + 4;
         break;
 
       case 'S':
@@ -346,7 +346,7 @@ void ProtocolUtil::writef(std::vector<UInt8> &buffer, const char *fmt, va_list a
 
       case 's': {
         assert(len == 0);
-        const String *src = va_arg(args, String *);
+        const std::string *src = va_arg(args, std::string *);
         writeString(src, buffer);
         break;
       }
@@ -520,7 +520,7 @@ UInt32 ProtocolUtil::readVectorSize(deskflow::IStream *stream)
   return size;
 }
 
-void ProtocolUtil::readBytes(deskflow::IStream *stream, UInt32 len, String *destination)
+void ProtocolUtil::readBytes(deskflow::IStream *stream, UInt32 len, std::string *destination)
 {
   // read the string length
   UInt8 buffer[128];
@@ -575,7 +575,7 @@ void ProtocolUtil::readBytes(deskflow::IStream *stream, UInt32 len, String *dest
 // XIOReadMismatch
 //
 
-String XIOReadMismatch::getWhat() const throw()
+std::string XIOReadMismatch::getWhat() const throw()
 {
   return format("XIOReadMismatch", "ProtocolUtil::readf() mismatch");
 }

src/lib/deskflow/ProtocolUtil.h

@@ -22,6 +22,7 @@
 #include "io/XIO.h"
 
 #include <stdarg.h>
+#include <vector>
 
 namespace deskflow {
 class IStream;
@@ -50,7 +51,7 @@ public:
   - \%1I  -- converts std::vector<UInt8>* to 1 byte integers
   - \%2I  -- converts std::vector<UInt16>* to 2 byte integers in NBO
   - \%4I  -- converts std::vector<UInt32>* to 4 byte integers in NBO
-  - \%s   -- converts String* to stream of bytes
+  - \%s   -- converts std::string* to stream of bytes
   - \%S   -- converts integer N and const UInt8* to stream of N bytes
   */
   static void writef(deskflow::IStream *, const char *fmt, ...);
@@ -69,7 +70,7 @@ public:
   - \%1I  -- reads 1 byte integers;  arg is std::vector<UInt8>*
   - \%2I  -- reads NBO 2 byte integers;  arg is std::vector<UInt16>*
   - \%4I  -- reads NBO 4 byte integers;  arg is std::vector<UInt32>*
-  - \%s   -- reads bytes;  argument must be a String*, \b not a char*
+  - \%s   -- reads bytes;  argument must be a std::string*, \b not a char*
   */
   static bool readf(deskflow::IStream *, const char *fmt, ...);
 
@@ -100,7 +101,7 @@ private:
   /**
    * @brief Handles an array of bytes
    */
-  static void readBytes(deskflow::IStream *, UInt32, String *);
+  static void readBytes(deskflow::IStream *, UInt32, std::string *);
 };
 
 //! Mismatched read exception
@@ -112,5 +113,5 @@ class XIOReadMismatch : public XIO
 {
 public:
   // XBase overrides
-  virtual String getWhat() const throw();
+  virtual std::string getWhat() const throw();
 };

src/lib/deskflow/Screen.cpp

@@ -198,7 +198,7 @@ void Screen::screensaver(bool) const
   // do nothing
 }
 
-void Screen::keyDown(KeyID id, KeyModifierMask mask, KeyButton button, const String &lang)
+void Screen::keyDown(KeyID id, KeyModifierMask mask, KeyButton button, const std::string &lang)
 {
   // check for ctrl+alt+del emulation
   if (id == kKeyDelete && (mask & (KeyModifierControl | KeyModifierAlt)) == (KeyModifierControl | KeyModifierAlt)) {
@@ -210,7 +210,7 @@ void Screen::keyDown(KeyID id, KeyModifierMask mask, KeyButton button, const Str
   m_screen->fakeKeyDown(id, mask, button, lang);
 }
 
-void Screen::keyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const String &lang)
+void Screen::keyRepeat(KeyID id, KeyModifierMask mask, SInt32 count, KeyButton button, const std::string &lang)
 {
   assert(!m_isPrimary);
   m_screen->fakeKeyRepeat(id, mask, count, button, lang);
@@ -400,7 +400,7 @@ void Screen::setEnableDragDrop(bool enabled)
   m_enableDragDrop = enabled;
 }
 
-String &Screen::getDraggingFilename() const
+std::string &Screen::getDraggingFilename() const
 {
   return m_screen->getDraggingFilename();
 }
@@ -410,7 +410,7 @@ void Screen::clearDraggingFilename()
   m_screen->clearDraggingFilename();
 }
 
-const String &Screen::getDropTarget() const
+const std::string &Screen::getDropTarget() const
 {
   return m_screen->getDropTarget();
 }
@@ -488,7 +488,7 @@ void Screen::leaveSecondary()
   m_screen->fakeAllKeysUp();
 }
 
-String Screen::getSecureInputApp() const
+std::string Screen::getSecureInputApp() const
 {
   return m_screen->getSecureInputApp();
 }

src/lib/deskflow/Screen.h

@@ -18,7 +18,6 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "deskflow/DragInformation.h"
 #include "deskflow/IScreen.h"
 #include "deskflow/clipboard_types.h"
@@ -130,14 +129,14 @@ public:
   synthesize an up or repeat for the same client key synthesized by
   keyDown().
   */
-  void keyDown(KeyID id, KeyModifierMask, KeyButton, const String &);
+  void keyDown(KeyID id, KeyModifierMask, KeyButton, const std::string &);
 
   //! Notify of key repeat
   /*!
   Synthesize key events to generate a press and release of key \c id
   \c count times.  If possible match the given modifier mask.
   */
-  void keyRepeat(KeyID id, KeyModifierMask, SInt32 count, KeyButton, const String &lang);
+  void keyRepeat(KeyID id, KeyModifierMask, SInt32 count, KeyButton, const std::string &lang);
 
   //! Notify of key release
   /*!
@@ -241,7 +240,7 @@ public:
   On MacOS check which app causes a secure input state to be enabled. No
   alternative on other platforms
   */
-  String getSecureInputApp() const;
+  std::string getSecureInputApp() const;
 
   //@}
   //! @name accessors
@@ -298,13 +297,13 @@ public:
   bool isFakeDraggingStarted() const;
 
   //! Get the filename of the file being dragged
-  String &getDraggingFilename() const;
+  std::string &getDraggingFilename() const;
 
   //! Clear the filename of the file that was dragged
   void clearDraggingFilename();
 
   //! Get the drop target directory
-  const String &getDropTarget() const;
+  const std::string &getDropTarget() const;
 
   //@}
 

src/lib/deskflow/ServerApp.cpp

@@ -236,7 +236,7 @@ void ServerApp::loadConfig()
   }
 }
 
-bool ServerApp::loadConfig(const String &pathname)
+bool ServerApp::loadConfig(const std::string &pathname)
 {
   try {
     // load configuration
@@ -325,7 +325,7 @@ void ServerApp::updateStatus()
   updateStatus("");
 }
 
-void ServerApp::updateStatus(const String &msg)
+void ServerApp::updateStatus(const std::string &msg)
 {
   if (m_taskBarReceiver) {
     m_taskBarReceiver->updateStatus(m_server, msg);
@@ -445,7 +445,7 @@ bool ServerApp::initServer()
   deskflow::Screen *serverScreen = NULL;
   PrimaryClient *primaryClient = NULL;
   try {
-    String name = args().m_config->getCanonicalName(args().m_name);
+    std::string name = args().m_config->getCanonicalName(args().m_name);
     serverScreen = openServerScreen();
     primaryClient = openPrimaryClient(name, serverScreen);
     m_serverScreen = serverScreen;
@@ -457,7 +457,7 @@ bool ServerApp::initServer()
     LOG((CLOG_WARN "primary screen unavailable: %s", e.what()));
     closePrimaryClient(primaryClient);
     closeServerScreen(serverScreen);
-    updateStatus(String("primary screen unavailable: ") + e.what());
+    updateStatus(std::string("primary screen unavailable: ") + e.what());
     retryTime = e.getRetryTime();
   } catch (XScreenOpenFailure &e) {
     LOG((CLOG_CRIT "failed to start server: %s", e.what()));
@@ -543,7 +543,7 @@ bool ServerApp::startServer()
       LOG((CLOG_CRIT "cannot listen for clients: %s", e.what()));
     }
     closeClientListener(listener);
-    updateStatus(String("cannot listen for clients: ") + e.what());
+    updateStatus(std::string("cannot listen for clients: ") + e.what());
   } catch (XBase &e) {
     LOG((CLOG_CRIT "failed to start server: %s", e.what()));
     closeClientListener(listener);
@@ -594,7 +594,7 @@ deskflow::Screen *ServerApp::createScreen()
 #endif
 }
 
-PrimaryClient *ServerApp::openPrimaryClient(const String &name, deskflow::Screen *screen)
+PrimaryClient *ServerApp::openPrimaryClient(const std::string &name, deskflow::Screen *screen)
 {
   LOG((CLOG_DEBUG1 "creating primary screen"));
   return new PrimaryClient(name, screen);
@@ -714,7 +714,7 @@ int ServerApp::mainLoop()
   }
 
   // canonicalize the primary screen name
-  String primaryName = args().m_config->getCanonicalName(args().m_name);
+  std::string primaryName = args().m_config->getCanonicalName(args().m_name);
   if (primaryName.empty()) {
     LOG((CLOG_CRIT "unknown screen name `%s'", args().m_name.c_str()));
     return kExitFailed;

src/lib/deskflow/ServerApp.h

@@ -68,7 +68,7 @@ public:
   const char *daemonName() const override;
   const char *daemonInfo() const override;
   void loadConfig() override;
-  bool loadConfig(const String &pathname) override;
+  bool loadConfig(const std::string &pathname) override;
   deskflow::Screen *createScreen() override;
   int mainLoop() override;
   int runInner(int argc, char **argv, ILogOutputter *outputter, StartupFunc startup) override;
@@ -97,7 +97,7 @@ public:
   void closeServer(Server *server);
   void stopRetryTimer();
   void updateStatus();
-  void updateStatus(const String &msg);
+  void updateStatus(const std::string &msg);
   void closeClientListener(ClientListener *listen);
   void stopServer();
   void closePrimaryClient(PrimaryClient *primaryClient);
@@ -106,7 +106,7 @@ public:
   bool initServer();
   void retryHandler(const Event &, void *);
   deskflow::Screen *openServerScreen();
-  PrimaryClient *openPrimaryClient(const String &name, deskflow::Screen *screen);
+  PrimaryClient *openPrimaryClient(const std::string &name, deskflow::Screen *screen);
   void handleScreenError(const Event &, void *);
   void handleSuspend(const Event &, void *);
   void handleResume(const Event &, void *);

src/lib/deskflow/ServerArgs.h

@@ -38,7 +38,7 @@ public:
   ServerArgs &operator=(ServerArgs &&) = default;
 
 public:
-  String m_configFile = "";
+  std::string m_configFile = "";
   std::shared_ptr<Config> m_config;
 };
 

src/lib/deskflow/ServerTaskBarReceiver.cpp

@@ -38,7 +38,7 @@ ServerTaskBarReceiver::~ServerTaskBarReceiver()
   // do nothing
 }
 
-void ServerTaskBarReceiver::updateStatus(Server *server, const String &errorMsg)
+void ServerTaskBarReceiver::updateStatus(Server *server, const std::string &errorMsg)
 {
   {
     // update our status
@@ -72,7 +72,7 @@ ServerTaskBarReceiver::EState ServerTaskBarReceiver::getStatus() const
   return m_state;
 }
 
-const String &ServerTaskBarReceiver::getErrorMessage() const
+const std::string &ServerTaskBarReceiver::getErrorMessage() const
 {
   return m_errorMessage;
 }

src/lib/deskflow/ServerTaskBarReceiver.h

@@ -21,7 +21,6 @@
 #include "arch/IArchTaskBarReceiver.h"
 #include "base/Event.h"
 #include "base/EventTypes.h"
-#include "base/String.h"
 #include "common/stdvector.h"
 #include "deskflow/ServerApp.h"
 #include "server/Server.h"
@@ -42,9 +41,9 @@ public:
   /*!
   Determine the status and query required information from the server.
   */
-  void updateStatus(Server *, const String &errorMsg);
+  void updateStatus(Server *, const std::string &errorMsg);
 
-  void updateStatus(INode *n, const String &errorMsg)
+  void updateStatus(INode *n, const std::string &errorMsg)
   {
     updateStatus((Server *)n, errorMsg);
   }
@@ -61,7 +60,7 @@ public:
   virtual std::string getToolTip() const;
 
 protected:
-  using Clients = std::vector<String>;
+  using Clients = std::vector<std::string>;
   enum EState
   {
     kNotRunning,
@@ -75,7 +74,7 @@ protected:
   EState getStatus() const;
 
   //! Get error message
-  const String &getErrorMessage() const;
+  const std::string &getErrorMessage() const;
 
   //! Get connected clients
   const Clients &getClients() const;
@@ -95,7 +94,7 @@ protected:
 
 private:
   EState m_state;
-  String m_errorMessage;
+  std::string m_errorMessage;
   Clients m_clients;
   IEventQueue *m_events;
 };

src/lib/deskflow/StreamChunker.cpp

@@ -55,7 +55,7 @@ void StreamChunker::sendFile(char *filename, IEventQueue *events, void *eventTar
   size_t size = (size_t)file.tellg();
 
   // send first message (file size)
-  String fileSize = deskflow::string::sizeTypeToString(size);
+  std::string fileSize = deskflow::string::sizeTypeToString(size);
   FileChunk *sizeMessage = FileChunk::start(fileSize);
 
   events->addEvent(Event(events->forFile().fileChunkSending(), eventTarget, sizeMessage));
@@ -106,11 +106,11 @@ void StreamChunker::sendFile(char *filename, IEventQueue *events, void *eventTar
 }
 
 void StreamChunker::sendClipboard(
-    String &data, size_t size, ClipboardID id, UInt32 sequence, IEventQueue *events, void *eventTarget
+    std::string &data, size_t size, ClipboardID id, UInt32 sequence, IEventQueue *events, void *eventTarget
 )
 {
   // send first message (data size)
-  String dataSize = deskflow::string::sizeTypeToString(size);
+  std::string dataSize = deskflow::string::sizeTypeToString(size);
   ClipboardChunk *sizeMessage = ClipboardChunk::start(id, sequence, dataSize);
 
   events->addEvent(Event(events->forClipboard().clipboardSending(), eventTarget, sizeMessage));
@@ -127,7 +127,7 @@ void StreamChunker::sendClipboard(
       chunkSize = size - sentLength;
     }
 
-    String chunk(data.substr(sentLength, chunkSize).c_str(), chunkSize);
+    std::string chunk(data.substr(sentLength, chunkSize).c_str(), chunkSize);
     ClipboardChunk *dataChunk = ClipboardChunk::data(id, sequence, chunk);
 
     events->addEvent(Event(events->forClipboard().clipboardSending(), eventTarget, dataChunk));

src/lib/deskflow/StreamChunker.h

@@ -17,9 +17,10 @@
 
 #pragma once
 
-#include "base/String.h"
 #include "deskflow/clipboard_types.h"
 
+#include <string>
+
 class IEventQueue;
 class Mutex;
 
@@ -27,8 +28,9 @@ class StreamChunker
 {
 public:
   static void sendFile(char *filename, IEventQueue *events, void *eventTarget);
-  static void
-  sendClipboard(String &data, size_t size, ClipboardID id, UInt32 sequence, IEventQueue *events, void *eventTarget);
+  static void sendClipboard(
+      std::string &data, size_t size, ClipboardID id, UInt32 sequence, IEventQueue *events, void *eventTarget
+  );
   static void interruptFile();
 
 private:

src/lib/deskflow/XDeskflow.cpp

@@ -23,7 +23,7 @@
 // XBadClient
 //
 
-String XBadClient::getWhat() const throw()
+std::string XBadClient::getWhat() const throw()
 {
   return "XBadClient";
 }
@@ -32,7 +32,7 @@ String XBadClient::getWhat() const throw()
 // XInvalidProtocol
 //
 
-String XInvalidProtocol::getWhat() const throw()
+std::string XInvalidProtocol::getWhat() const throw()
 {
   return "XInvalidProtocol";
 }
@@ -56,7 +56,7 @@ int XIncompatibleClient::getMinor() const throw()
   return m_minor;
 }
 
-String XIncompatibleClient::getWhat() const throw()
+std::string XIncompatibleClient::getWhat() const throw()
 {
   return format(
       "XIncompatibleClient", "incompatible client %{1}.%{2}", deskflow::string::sprintf("%d", m_major).c_str(),
@@ -68,17 +68,17 @@ String XIncompatibleClient::getWhat() const throw()
 // XDuplicateClient
 //
 
-XDuplicateClient::XDuplicateClient(const String &name) : m_name(name)
+XDuplicateClient::XDuplicateClient(const std::string &name) : m_name(name)
 {
   // do nothing
 }
 
-const String &XDuplicateClient::getName() const throw()
+const std::string &XDuplicateClient::getName() const throw()
 {
   return m_name;
 }
 
-String XDuplicateClient::getWhat() const throw()
+std::string XDuplicateClient::getWhat() const throw()
 {
   return format("XDuplicateClient", "duplicate client %{1}", m_name.c_str());
 }
@@ -87,17 +87,17 @@ String XDuplicateClient::getWhat() const throw()
 // XUnknownClient
 //
 
-XUnknownClient::XUnknownClient(const String &name) : m_name(name)
+XUnknownClient::XUnknownClient(const std::string &name) : m_name(name)
 {
   // do nothing
 }
 
-const String &XUnknownClient::getName() const throw()
+const std::string &XUnknownClient::getName() const throw()
 {
   return m_name;
 }
 
-String XUnknownClient::getWhat() const throw()
+std::string XUnknownClient::getWhat() const throw()
 {
   return format("XUnknownClient", "unknown client %{1}", m_name.c_str());
 }
@@ -116,7 +116,7 @@ int XExitApp::getCode() const throw()
   return m_code;
 }
 
-String XExitApp::getWhat() const throw()
+std::string XExitApp::getWhat() const throw()
 {
   return format("XExitApp", "exiting with code %{1}", deskflow::string::sprintf("%d", m_code).c_str());
 }

src/lib/deskflow/XDeskflow.h

@@ -61,7 +61,7 @@ public:
   //@}
 
 protected:
-  virtual String getWhat() const throw();
+  virtual std::string getWhat() const throw();
 
 private:
   int m_major;
@@ -76,7 +76,7 @@ a client that is already connected.
 class XDuplicateClient : public XDeskflow
 {
 public:
-  XDuplicateClient(const String &name);
+  XDuplicateClient(const std::string &name);
   virtual ~XDuplicateClient() _NOEXCEPT
   {
   }
@@ -85,15 +85,15 @@ public:
   //@{
 
   //! Get client's name
-  virtual const String &getName() const throw();
+  virtual const std::string &getName() const throw();
 
   //@}
 
 protected:
-  virtual String getWhat() const throw();
+  virtual std::string getWhat() const throw();
 
 private:
-  String m_name;
+  std::string m_name;
 };
 
 //! Client not in map exception
@@ -104,7 +104,7 @@ unknown to the server.
 class XUnknownClient : public XDeskflow
 {
 public:
-  XUnknownClient(const String &name);
+  XUnknownClient(const std::string &name);
   virtual ~XUnknownClient() _NOEXCEPT
   {
   }
@@ -113,15 +113,15 @@ public:
   //@{
 
   //! Get the client's name
-  virtual const String &getName() const throw();
+  virtual const std::string &getName() const throw();
 
   //@}
 
 protected:
-  virtual String getWhat() const throw();
+  virtual std::string getWhat() const throw();
 
 private:
-  String m_name;
+  std::string m_name;
 };
 
 //! Generic exit eception
@@ -142,7 +142,7 @@ public:
   int getCode() const throw();
 
 protected:
-  virtual String getWhat() const throw();
+  virtual std::string getWhat() const throw();
 
 private:
   int m_code;

src/lib/deskflow/XScreen.cpp

@@ -22,7 +22,7 @@
 // XScreenOpenFailure
 //
 
-String XScreenOpenFailure::getWhat() const throw()
+std::string XScreenOpenFailure::getWhat() const throw()
 {
   return format("XScreenOpenFailure", "unable to open screen");
 }
@@ -31,7 +31,7 @@ String XScreenOpenFailure::getWhat() const throw()
 // XScreenXInputFailure
 //
 
-String XScreenXInputFailure::getWhat() const throw()
+std::string XScreenXInputFailure::getWhat() const throw()
 {
   return "";
 }
@@ -55,7 +55,7 @@ double XScreenUnavailable::getRetryTime() const
   return m_timeUntilRetry;
 }
 
-String XScreenUnavailable::getWhat() const throw()
+std::string XScreenUnavailable::getWhat() const throw()
 {
   return format("XScreenUnavailable", "unable to open screen");
 }

src/lib/deskflow/XScreen.h

@@ -62,7 +62,7 @@ public:
   //@}
 
 protected:
-  virtual String getWhat() const throw();
+  virtual std::string getWhat() const throw();
 
 private:
   double m_timeUntilRetry;

src/lib/deskflow/languages/LanguageManager.cpp

@@ -21,9 +21,9 @@
 
 namespace {
 
-String vectorToString(const std::vector<String> &vector, const String &delimiter = "")
+std::string vectorToString(const std::vector<std::string> &vector, const std::string &delimiter = "")
 {
-  String string;
+  std::string string;
   for (const auto &item : vector) {
     if (&item != &vector[0]) {
       string += delimiter;
@@ -39,12 +39,12 @@ namespace deskflow {
 
 namespace languages {
 
-LanguageManager::LanguageManager(const std::vector<String> &localLanguages) : m_localLanguages(localLanguages)
+LanguageManager::LanguageManager(const std::vector<std::string> &localLanguages) : m_localLanguages(localLanguages)
 {
   LOG((CLOG_INFO "local languages: %s", vectorToString(m_localLanguages, ", ").c_str()));
 }
 
-void LanguageManager::setRemoteLanguages(const String &remoteLanguages)
+void LanguageManager::setRemoteLanguages(const std::string &remoteLanguages)
 {
   m_remoteLanguages.clear();
   if (!remoteLanguages.empty()) {
@@ -55,19 +55,19 @@ void LanguageManager::setRemoteLanguages(const String &remoteLanguages)
   LOG((CLOG_INFO "remote languages: %s", vectorToString(m_remoteLanguages, ", ").c_str()));
 }
 
-const std::vector<String> &LanguageManager::getRemoteLanguages() const
+const std::vector<std::string> &LanguageManager::getRemoteLanguages() const
 {
   return m_remoteLanguages;
 }
 
-const std::vector<String> &LanguageManager::getLocalLanguages() const
+const std::vector<std::string> &LanguageManager::getLocalLanguages() const
 {
   return m_localLanguages;
 }
 
-String LanguageManager::getMissedLanguages() const
+std::string LanguageManager::getMissedLanguages() const
 {
-  String missedLanguages;
+  std::string missedLanguages;
 
   for (const auto &language : m_remoteLanguages) {
     if (!isLanguageInstalled(language)) {
@@ -81,12 +81,12 @@ String LanguageManager::getMissedLanguages() const
   return missedLanguages;
 }
 
-String LanguageManager::getSerializedLocalLanguages() const
+std::string LanguageManager::getSerializedLocalLanguages() const
 {
   return vectorToString(m_localLanguages);
 }
 
-bool LanguageManager::isLanguageInstalled(const String &language) const
+bool LanguageManager::isLanguageInstalled(const std::string &language) const
 {
   bool isInstalled = true;
 

src/lib/deskflow/languages/LanguageManager.h

@@ -16,7 +16,6 @@
  */
 #pragma once
 
-#include "base/String.h"
 #include "deskflow/AppUtil.h"
 #include <vector>
 
@@ -26,49 +25,51 @@ namespace languages {
 
 class LanguageManager
 {
-  std::vector<String> m_remoteLanguages;
-  std::vector<String> m_localLanguages;
+  std::vector<std::string> m_remoteLanguages;
+  std::vector<std::string> m_localLanguages;
 
 public:
-  explicit LanguageManager(const std::vector<String> &localLanguages = AppUtil::instance().getKeyboardLayoutList());
+  explicit LanguageManager(
+      const std::vector<std::string> &localLanguages = AppUtil::instance().getKeyboardLayoutList()
+  );
 
   /**
    * @brief setRemoteLanguages sets remote languages
    * @param remoteLanguages is a string with sericalized languages
    */
-  void setRemoteLanguages(const String &remoteLanguages);
+  void setRemoteLanguages(const std::string &remoteLanguages);
 
   /**
    * @brief getRemoteLanguages getter for remote languages
    * @return vector of remote languages
    */
-  const std::vector<String> &getRemoteLanguages() const;
+  const std::vector<std::string> &getRemoteLanguages() const;
 
   /**
    * @brief getLocalLanguages getter for local languages
    * @return vector of local languages
    */
-  const std::vector<String> &getLocalLanguages() const;
+  const std::vector<std::string> &getLocalLanguages() const;
 
   /**
    * @brief getMissedLanguages getter for missed languages on local machine
    * @return difference between remote and local languages as a coma separated
    * string
    */
-  String getMissedLanguages() const;
+  std::string getMissedLanguages() const;
 
   /**
    * @brief getSerializedLocalLanguages getter for local serialized languages
    * @return serialized local languages as a string
    */
-  String getSerializedLocalLanguages() const;
+  std::string getSerializedLocalLanguages() const;
 
   /**
    * @brief isLanguageInstalled checks if language is installed
    * @param language which should be checked
    * @return true if the specified language is installed
    */
-  bool isLanguageInstalled(const String &language) const;
+  bool isLanguageInstalled(const std::string &language) const;
 };
 
 } // namespace languages

src/lib/deskflow/unix/AppUtilUnix.cpp

@@ -60,9 +60,9 @@ void AppUtilUnix::startNode()
   app().startNode();
 }
 
-std::vector<String> AppUtilUnix::getKeyboardLayoutList()
+std::vector<std::string> AppUtilUnix::getKeyboardLayoutList()
 {
-  std::vector<String> layoutLangCodes;
+  std::vector<std::string> layoutLangCodes;
 
 #if WINAPI_XWINDOWS
   layoutLangCodes = X11LayoutsParser::getX11LanguageList("/usr/share/X11/xkb/rules/evdev.xml");
@@ -97,9 +97,9 @@ std::vector<String> AppUtilUnix::getKeyboardLayoutList()
   return layoutLangCodes;
 }
 
-String AppUtilUnix::getCurrentLanguageCode()
+std::string AppUtilUnix::getCurrentLanguageCode()
 {
-  String result = "";
+  std::string result = "";
 #if WINAPI_XWINDOWS
 
   auto display = XOpenDisplay(nullptr);
@@ -165,7 +165,7 @@ String AppUtilUnix::getCurrentLanguageCode()
   return result;
 }
 
-void AppUtilUnix::showNotification(const String &title, const String &text) const
+void AppUtilUnix::showNotification(const std::string &title, const std::string &text) const
 {
 #if HAVE_LIBNOTIFY
   LOG((CLOG_INFO "showing notification, title=\"%s\", text=\"%s\"", title.c_str(), text.c_str()));

src/lib/deskflow/unix/AppUtilUnix.h

@@ -32,7 +32,7 @@ public:
 
   int run(int argc, char **argv) override;
   void startNode() override;
-  std::vector<String> getKeyboardLayoutList() override;
-  String getCurrentLanguageCode() override;
-  void showNotification(const String &title, const String &text) const override;
+  std::vector<std::string> getKeyboardLayoutList() override;
+  std::string getCurrentLanguageCode() override;
+  void showNotification(const std::string &title, const std::string &text) const override;
 };

src/lib/deskflow/unix/ISO639Table.h

@@ -18,13 +18,13 @@
 
 #pragma once
 
-#include "base/String.h"
-
+#include <string>
+#include <vector>
 // copy from
 // https://www.loc.gov/standards/iso639-2/php/code_list.php
 // 10.06.2021
 // first param - ISO 639-2, second param - 639-1
-const std::vector<std::pair<String, String>> ISO_Table = {
+const std::vector<std::pair<std::string, std::string>> ISO_Table = {
     std::make_pair("aar", "aa"), std::make_pair("abk", "ab"), std::make_pair("afr", "af"), std::make_pair("aka", "ak"),
     std::make_pair("sqi", "sq"), std::make_pair("amh", "am"), std::make_pair("ara", "ar"), std::make_pair("arg", "an"),
     std::make_pair("hye", "hy"), std::make_pair("asm", "as"), std::make_pair("ava", "av"), std::make_pair("ave", "ae"),

src/lib/deskflow/unix/X11LayoutsParser.cpp

@@ -28,11 +28,11 @@
 
 namespace {
 
-void splitLine(std::vector<String> &parts, const String &line, char delimiter)
+void splitLine(std::vector<std::string> &parts, const std::string &line, char delimiter)
 {
   std::stringstream stream(line);
   while (stream.good()) {
-    String part;
+    std::string part;
     getline(stream, part, delimiter);
     parts.push_back(part);
   }
@@ -64,7 +64,7 @@ bool X11LayoutsParser::readXMLConfigItemElem(const pugi::xml_node *root, std::ve
   return true;
 }
 
-std::vector<X11LayoutsParser::Lang> X11LayoutsParser::getAllLanguageData(const String &pathToEvdevFile)
+std::vector<X11LayoutsParser::Lang> X11LayoutsParser::getAllLanguageData(const std::string &pathToEvdevFile)
 {
   std::vector<Lang> allCodes;
   pugi::xml_document doc;
@@ -101,18 +101,18 @@ std::vector<X11LayoutsParser::Lang> X11LayoutsParser::getAllLanguageData(const S
   return allCodes;
 }
 
-void X11LayoutsParser::appendVectorUniq(const std::vector<String> &source, std::vector<String> &dst)
+void X11LayoutsParser::appendVectorUniq(const std::vector<std::string> &source, std::vector<std::string> &dst)
 {
   for (const auto &elem : source) {
-    if (std::find_if(dst.begin(), dst.end(), [elem](const String &s) { return s == elem; }) == dst.end()) {
+    if (std::find_if(dst.begin(), dst.end(), [elem](const std::string &s) { return s == elem; }) == dst.end()) {
       dst.push_back(elem);
     }
   }
 };
 
 void X11LayoutsParser::convertLayoutToISO639_2(
-    const String &pathToEvdevFile, bool needToReloadEvdev, const std::vector<String> &layoutNames,
-    const std::vector<String> &layoutVariantNames, std::vector<String> &iso639_2Codes
+    const std::string &pathToEvdevFile, bool needToReloadEvdev, const std::vector<std::string> &layoutNames,
+    const std::vector<std::string> &layoutVariantNames, std::vector<std::string> &iso639_2Codes
 )
 {
   if (layoutNames.size() != layoutVariantNames.size()) {
@@ -133,7 +133,7 @@ void X11LayoutsParser::convertLayoutToISO639_2(
       continue;
     }
 
-    const std::vector<String> *toCopy = nullptr;
+    const std::vector<std::string> *toCopy = nullptr;
     if (layoutVariantNames[i].empty()) {
       toCopy = &langIter->layoutBaseISO639_2;
     } else {
@@ -163,25 +163,26 @@ void X11LayoutsParser::convertLayoutToISO639_2(
   }
 }
 
-std::vector<String> X11LayoutsParser::getX11LanguageList(const String &pathToEvdevFile)
+std::vector<std::string> X11LayoutsParser::getX11LanguageList(const std::string &pathToEvdevFile)
 {
-  std::vector<String> layoutNames;
-  std::vector<String> layoutVariantNames;
+  std::vector<std::string> layoutNames;
+  std::vector<std::string> layoutVariantNames;
 
   deskflow::linux::DeskflowXkbKeyboard keyboard;
   splitLine(layoutNames, keyboard.getLayout(), ',');
   splitLine(layoutVariantNames, keyboard.getVariant(), ',');
 
-  std::vector<String> iso639_2Codes;
+  std::vector<std::string> iso639_2Codes;
   iso639_2Codes.reserve(layoutNames.size());
   convertLayoutToISO639_2(pathToEvdevFile, true, layoutNames, layoutVariantNames, iso639_2Codes);
   return convertISO639_2ToISO639_1(iso639_2Codes);
 }
 
-String
-X11LayoutsParser::convertLayotToISO(const String &pathToEvdevFile, const String &layoutLangCode, bool needToReloadFiles)
+std::string X11LayoutsParser::convertLayotToISO(
+    const std::string &pathToEvdevFile, const std::string &layoutLangCode, bool needToReloadFiles
+)
 {
-  std::vector<String> iso639_2Codes;
+  std::vector<std::string> iso639_2Codes;
   convertLayoutToISO639_2(pathToEvdevFile, needToReloadFiles, {layoutLangCode}, {""}, iso639_2Codes);
   if (iso639_2Codes.empty()) {
     LOG((CLOG_WARN "failed to convert layout lang code: \"%s\"", layoutLangCode.c_str()));
@@ -197,12 +198,12 @@ X11LayoutsParser::convertLayotToISO(const String &pathToEvdevFile, const String
   return *iso639_1Codes.begin();
 }
 
-std::vector<String> X11LayoutsParser::convertISO639_2ToISO639_1(const std::vector<String> &iso639_2Codes)
+std::vector<std::string> X11LayoutsParser::convertISO639_2ToISO639_1(const std::vector<std::string> &iso639_2Codes)
 {
-  std::vector<String> result;
+  std::vector<std::string> result;
   for (const auto &isoCode : iso639_2Codes) {
     const auto &tableIter =
-        std::find_if(ISO_Table.begin(), ISO_Table.end(), [&isoCode](const std::pair<String, String> &c) {
+        std::find_if(ISO_Table.begin(), ISO_Table.end(), [&isoCode](const std::pair<std::string, std::string> &c) {
           return c.first == isoCode;
         });
     if (tableIter == ISO_Table.end()) {

src/lib/deskflow/unix/X11LayoutsParser.h

@@ -18,7 +18,9 @@
 
 #if WINAPI_XWINDOWS
 #pragma once
-#include "base/String.h"
+
+#include <string>
+#include <vector>
 
 namespace pugi {
 class xml_node;
@@ -27,30 +29,31 @@ class xml_node;
 class X11LayoutsParser
 {
 public:
-  static std::vector<String> getX11LanguageList(const String &pathToEvdevFile);
-  static String
-  convertLayotToISO(const String &pathToEvdevFile, const String &layoutLangCode, bool needToReloadFiles = false);
+  static std::vector<std::string> getX11LanguageList(const std::string &pathToEvdevFile);
+  static std::string convertLayotToISO(
+      const std::string &pathToEvdevFile, const std::string &layoutLangCode, bool needToReloadFiles = false
+  );
 
 private:
   struct Lang
   {
-    String name = "";
-    std::vector<String> layoutBaseISO639_2;
+    std::string name = "";
+    std::vector<std::string> layoutBaseISO639_2;
     std::vector<Lang> variants;
   };
 
   static bool readXMLConfigItemElem(const pugi::xml_node *root, std::vector<Lang> &langList);
 
-  static std::vector<Lang> getAllLanguageData(const String &pathToEvdevFile);
+  static std::vector<Lang> getAllLanguageData(const std::string &pathToEvdevFile);
 
-  static void appendVectorUniq(const std::vector<String> &source, std::vector<String> &dst);
+  static void appendVectorUniq(const std::vector<std::string> &source, std::vector<std::string> &dst);
 
   static void convertLayoutToISO639_2(
-      const String &pathToEvdevFile, bool needToReloadEvdev, const std::vector<String> &layoutNames,
-      const std::vector<String> &layoutVariantNames, std::vector<String> &iso639_2Codes
+      const std::string &pathToEvdevFile, bool needToReloadEvdev, const std::vector<std::string> &layoutNames,
+      const std::vector<std::string> &layoutVariantNames, std::vector<std::string> &iso639_2Codes
   );
 
-  static std::vector<String> convertISO639_2ToISO639_1(const std::vector<String> &iso639_2Codes);
+  static std::vector<std::string> convertISO639_2ToISO639_1(const std::vector<std::string> &iso639_2Codes);
 };
 
 #endif // WINAPI_XWINDOWS

src/lib/deskflow/win32/AppUtilWindows.cpp

@@ -169,16 +169,16 @@ void AppUtilWindows::startNode()
   app().startNode();
 }
 
-std::vector<String> AppUtilWindows::getKeyboardLayoutList()
+std::vector<std::string> AppUtilWindows::getKeyboardLayoutList()
 {
-  std::vector<String> layoutLangCodes;
+  std::vector<std::string> layoutLangCodes;
   {
     auto uLayouts = GetKeyboardLayoutList(0, NULL);
     auto lpList = (HKL *)LocalAlloc(LPTR, (uLayouts * sizeof(HKL)));
     uLayouts = GetKeyboardLayoutList(uLayouts, lpList);
 
     for (int i = 0; i < uLayouts; ++i) {
-      String code("", 2);
+      std::string code("", 2);
       GetLocaleInfoA(
           MAKELCID(((ULONG_PTR)lpList[i] & 0xffffffff), SORT_DEFAULT), LOCALE_SISO639LANGNAME, &code[0],
           static_cast<int>(code.size())
@@ -193,9 +193,9 @@ std::vector<String> AppUtilWindows::getKeyboardLayoutList()
   return layoutLangCodes;
 }
 
-String AppUtilWindows::getCurrentLanguageCode()
+std::string AppUtilWindows::getCurrentLanguageCode()
 {
-  String code("", 2);
+  std::string code("", 2);
 
   auto hklLayout = getCurrentKeyboardLayout();
   if (hklLayout) {
@@ -243,7 +243,7 @@ public:
 };
 #endif
 
-void AppUtilWindows::showNotification(const String &title, const String &text) const
+void AppUtilWindows::showNotification(const std::string &title, const std::string &text) const
 {
 #if HAVE_WINTOAST
   LOG((CLOG_INFO "showing notification, title=\"%s\", text=\"%s\"", title.c_str(), text.c_str()));

src/lib/deskflow/win32/AppUtilWindows.h

@@ -48,10 +48,10 @@ public:
   void exitApp(int code) override;
   void beforeAppExit() override;
   void startNode() override;
-  std::vector<String> getKeyboardLayoutList() override;
-  String getCurrentLanguageCode() override;
+  std::vector<std::string> getKeyboardLayoutList() override;
+  std::string getCurrentLanguageCode() override;
   HKL getCurrentKeyboardLayout() const;
-  void showNotification(const String &title, const String &text) const override;
+  void showNotification(const std::string &title, const std::string &text) const override;
 
 private:
   AppExitMode m_exitMode;

src/lib/io/XIO.cpp

@@ -22,7 +22,7 @@
 // XIOClosed
 //
 
-String XIOClosed::getWhat() const throw()
+std::string XIOClosed::getWhat() const throw()
 {
   return format("XIOClosed", "already closed");
 }
@@ -31,7 +31,7 @@ String XIOClosed::getWhat() const throw()
 // XIOEndOfStream
 //
 
-String XIOEndOfStream::getWhat() const throw()
+std::string XIOEndOfStream::getWhat() const throw()
 {
   return format("XIOEndOfStream", "reached end of stream");
 }
@@ -40,7 +40,7 @@ String XIOEndOfStream::getWhat() const throw()
 // XIOWouldBlock
 //
 
-String XIOWouldBlock::getWhat() const throw()
+std::string XIOWouldBlock::getWhat() const throw()
 {
   return format("XIOWouldBlock", "stream operation would block");
 }

src/lib/ipc/IpcClientProxy.cpp

@@ -130,7 +130,7 @@ void IpcClientProxy::send(const IpcMessage &message)
   switch (message.type()) {
   case IpcMessageType::LogLine: {
     const IpcLogLineMessage &llm = static_cast<const IpcLogLineMessage &>(message);
-    const String logLine = llm.logLine();
+    const std::string logLine = llm.logLine();
     ProtocolUtil::writef(&m_stream, kIpcMsgLogLine, &logLine);
     break;
   }
@@ -162,7 +162,7 @@ IpcHelloMessage *IpcClientProxy::parseHello()
 
 IpcCommandMessage *IpcClientProxy::parseCommand()
 {
-  String command;
+  std::string command;
   UInt8 elevate;
   ProtocolUtil::readf(&m_stream, kIpcMsgCommand + 4, &command, &elevate);
 
@@ -172,8 +172,8 @@ IpcCommandMessage *IpcClientProxy::parseCommand()
 
 IpcSettingMessage *IpcClientProxy::parseSetting() const
 {
-  String name;
-  String value;
+  std::string name;
+  std::string value;
 
   ProtocolUtil::readf(&m_stream, kIpcMsgSetting + 4, &name, &value);
 

src/lib/ipc/IpcLogOutputter.cpp

@@ -108,7 +108,7 @@ bool IpcLogOutputter::write(ELevel, const char *text)
   return true;
 }
 
-void IpcLogOutputter::appendBuffer(const String &text)
+void IpcLogOutputter::appendBuffer(const std::string &text)
 {
   ArchMutexLock lock(m_bufferMutex);
 
@@ -166,7 +166,7 @@ void IpcLogOutputter::notifyBuffer()
   ARCH->broadcastCondVar(m_notifyCond);
 }
 
-String IpcLogOutputter::getChunk(size_t count)
+std::string IpcLogOutputter::getChunk(size_t count)
 {
   ArchMutexLock lock(m_bufferMutex);
 
@@ -174,7 +174,7 @@ String IpcLogOutputter::getChunk(size_t count)
     count = m_buffer.size();
   }
 
-  String chunk;
+  std::string chunk;
   for (size_t i = 0; i < count; i++) {
     chunk.append(m_buffer.front());
     chunk.append("\n");

src/lib/ipc/IpcLogOutputter.h

@@ -93,12 +93,12 @@ public:
 private:
   void init();
   void bufferThread(void *);
-  String getChunk(size_t count);
-  void appendBuffer(const String &text);
+  std::string getChunk(size_t count);
+  void appendBuffer(const std::string &text);
   bool isRunning();
 
 private:
-  using Buffer = std::deque<String>;
+  using Buffer = std::deque<std::string>;
 
   IpcServer &m_ipcServer;
   Buffer m_buffer;

src/lib/ipc/IpcMessage.cpp

@@ -35,11 +35,13 @@ IpcShutdownMessage::IpcShutdownMessage() : IpcMessage(IpcMessageType::Shutdown)
 {
 }
 
-IpcLogLineMessage::IpcLogLineMessage(const String &logLine) : IpcMessage(IpcMessageType::LogLine), m_logLine(logLine)
+IpcLogLineMessage::IpcLogLineMessage(const std::string &logLine)
+    : IpcMessage(IpcMessageType::LogLine),
+      m_logLine(logLine)
 {
 }
 
-IpcCommandMessage::IpcCommandMessage(const String &command, bool elevate)
+IpcCommandMessage::IpcCommandMessage(const std::string &command, bool elevate)
     : IpcMessage(IpcMessageType::Command),
       m_command(command),
       m_elevate(elevate)

src/lib/ipc/IpcMessage.h

@@ -18,9 +18,10 @@
 #pragma once
 
 #include "base/Event.h"
-#include "base/String.h"
 #include "common/ipc.h"
 
+#include <string>
+
 class IpcMessage : public EventData
 {
 public:
@@ -72,27 +73,27 @@ public:
 class IpcLogLineMessage : public IpcMessage
 {
 public:
-  explicit IpcLogLineMessage(const String &logLine);
+  explicit IpcLogLineMessage(const std::string &logLine);
   ~IpcLogLineMessage() override = default;
 
   //! Gets the log line.
-  String logLine() const
+  std::string logLine() const
   {
     return m_logLine;
   }
 
 private:
-  String m_logLine;
+  std::string m_logLine;
 };
 
 class IpcCommandMessage : public IpcMessage
 {
 public:
-  explicit IpcCommandMessage(const String &command, bool elevate);
+  explicit IpcCommandMessage(const std::string &command, bool elevate);
   ~IpcCommandMessage() override = default;
 
   //! Gets the command.
-  String command() const
+  std::string command() const
   {
     return m_command;
   }
@@ -104,6 +105,6 @@ public:
   }
 
 private:
-  String m_command;
+  std::string m_command;
   bool m_elevate;
 };

src/lib/ipc/IpcServerProxy.cpp

@@ -86,7 +86,7 @@ void IpcServerProxy::send(const IpcMessage &message)
 
   case IpcMessageType::Command: {
     const IpcCommandMessage &cm = static_cast<const IpcCommandMessage &>(message);
-    const String command = cm.command();
+    const std::string command = cm.command();
     ProtocolUtil::writef(&m_stream, kIpcMsgCommand, &command);
     break;
   }
@@ -99,7 +99,7 @@ void IpcServerProxy::send(const IpcMessage &message)
 
 IpcLogLineMessage *IpcServerProxy::parseLogLine()
 {
-  String logLine;
+  std::string logLine;
   ProtocolUtil::readf(&m_stream, kIpcMsgLogLine + 4, &logLine);
 
   // must be deleted by event handler.

src/lib/mt/XMT.cpp

@@ -22,7 +22,7 @@
 // XMTThreadUnavailable
 //
 
-String XMTThreadUnavailable::getWhat() const throw()
+std::string XMTThreadUnavailable::getWhat() const throw()
 {
   return format("XMTThreadUnavailable", "cannot create thread");
 }

src/lib/net/IDataSocket.h

@@ -19,7 +19,6 @@
 #pragma once
 
 #include "base/EventTypes.h"
-#include "base/String.h"
 #include "io/IStream.h"
 #include "net/ISocket.h"
 
@@ -37,7 +36,7 @@ public:
     ConnectionFailedInfo(const char *what) : m_what(what)
     {
     }
-    String m_what;
+    std::string m_what;
   };
 
   IDataSocket(IEventQueue *events)

src/lib/net/InverseSockets/SecureServerSocket.cpp

@@ -18,6 +18,7 @@
 #include "SecureServerSocket.h"
 
 #include <arch/XArch.h>
+#include <base/String.h>
 #include <common/constants.h>
 #include <deskflow/ArgParser.h>
 #include <deskflow/ArgsBase.h>

src/lib/net/InverseSockets/SslApi.cpp

@@ -6,6 +6,7 @@
 
 #include <base/Log.h>
 #include <base/Path.h>
+#include <base/String.h>
 #include <openssl/err.h>
 
 namespace deskflow {

src/lib/net/NetworkAddress.cpp

@@ -43,7 +43,7 @@ NetworkAddress::NetworkAddress(const NetworkAddress &addr) : m_hostname(addr.m_h
   *this = addr;
 }
 
-NetworkAddress::NetworkAddress(const String &hostname, int port) : m_hostname(hostname), m_port(port)
+NetworkAddress::NetworkAddress(const std::string &hostname, int port) : m_hostname(hostname), m_port(port)
 {
   // detect internet protocol version with colom count
   auto isColomPredicate = [](char c) { return c == ':'; };
@@ -64,11 +64,11 @@ NetworkAddress::NetworkAddress(const String &hostname, int port) : m_hostname(ho
     // ipv6 part
     if (m_hostname[0] == '[') {
       // ipv6 with port part
-      String portDelimeter = "]:";
+      std::string portDelimeter = "]:";
       auto hostIt = m_hostname.find(portDelimeter);
 
       // bad syntax of ipv6 with port
-      if (hostIt == String::npos) {
+      if (hostIt == std::string::npos) {
         throw XSocketAddress(XSocketAddress::kUnknown, m_hostname, m_port);
       }
 
@@ -89,7 +89,7 @@ NetworkAddress::NetworkAddress(const String &hostname, int port) : m_hostname(ho
     }
 
     // ensure that ipv6 link-local adress ended with scope id
-    if (m_hostname.rfind("fe80:", 0) == 0 && m_hostname.find('%') == String::npos) {
+    if (m_hostname.rfind("fe80:", 0) == 0 && m_hostname.find('%') == std::string::npos) {
       throw XSocketAddress(XSocketAddress::kUnknown, m_hostname, m_port);
     }
   }
@@ -208,7 +208,7 @@ int NetworkAddress::getPort() const
   return m_port;
 }
 
-String NetworkAddress::getHostname() const
+std::string NetworkAddress::getHostname() const
 {
   return m_hostname;
 }

src/lib/net/NetworkAddress.h

@@ -20,7 +20,6 @@
 
 #include "arch/IArchNetwork.h"
 #include "base/EventTypes.h"
-#include "base/String.h"
 
 //! Network address type
 /*!
@@ -50,7 +49,7 @@ public:
   is thrown with an error of \c XSocketAddress::kBadPort.  The hostname
   is not resolved by the c'tor;  use \c resolve to do that.
   */
-  NetworkAddress(const String &hostname, int port = 0);
+  NetworkAddress(const std::string &hostname, int port = 0);
 
   NetworkAddress(const NetworkAddress &);
 
@@ -112,7 +111,7 @@ public:
   /*!
   Returns the hostname passed to the c'tor sans any port suffix.
   */
-  String getHostname() const;
+  std::string getHostname() const;
 
   //@}
 
@@ -121,6 +120,6 @@ private:
 
 private:
   ArchNetAddress m_address = nullptr;
-  String m_hostname;
+  std::string m_hostname;
   int m_port = 0;
 };

src/lib/net/SecureListenSocket.cpp

@@ -19,6 +19,7 @@
 
 #include "SecureSocket.h"
 #include "arch/XArch.h"
+#include "base/String.h"
 #include "common/constants.h"
 #include "deskflow/ArgParser.h"
 #include "deskflow/ArgsBase.h"
@@ -53,7 +54,7 @@ IDataSocket *SecureListenSocket::accept()
     }
 
     // default location of the TLS cert file in users dir
-    String certificateFilename = deskflow::string::sprintf(
+    std::string certificateFilename = deskflow::string::sprintf(
         "%s/%s/%s.%s", ARCH->getProfileDirectory().c_str(), s_certificateDir, kAppId, s_certificateFileExt
     );
 

src/lib/net/SecureSocket.cpp

@@ -20,6 +20,7 @@
 #include "arch/XArch.h"
 #include "base/Log.h"
 #include "base/Path.h"
+#include "base/String.h"
 #include "base/TMethodEventJob.h"
 #include "mt/Lock.h"
 #include "net/TCPSocket.h"
@@ -303,7 +304,7 @@ void SecureSocket::initSsl(bool server)
   initContext(server);
 }
 
-bool SecureSocket::loadCertificates(String &filename)
+bool SecureSocket::loadCertificates(std::string &filename)
 {
   std::lock_guard<std::mutex> ssl_lock{ssl_mutex_};
 
@@ -316,7 +317,7 @@ bool SecureSocket::loadCertificates(String &filename)
     file.close();
 
     if (!exist) {
-      String errorMsg("tls certificate doesn't exist: ");
+      std::string errorMsg("tls certificate doesn't exist: ");
       errorMsg.append(filename);
       SslLogger::logError(errorMsg.c_str());
       return false;
@@ -620,7 +621,7 @@ void SecureSocket::disconnect()
   sendEvent(getEvents()->forIStream().inputShutdown());
 }
 
-void SecureSocket::formatFingerprint(String &fingerprint, bool hex, bool separator)
+void SecureSocket::formatFingerprint(std::string &fingerprint, bool hex, bool separator)
 {
   if (hex) {
     // to hexidecimal
@@ -655,17 +656,17 @@ bool SecureSocket::verifyCertFingerprint()
   }
 
   // format fingerprint into hexdecimal format with colon separator
-  String fingerprint(static_cast<char *>(static_cast<void *>(tempFingerprint)), tempFingerprintLen);
+  std::string fingerprint(static_cast<char *>(static_cast<void *>(tempFingerprint)), tempFingerprintLen);
   formatFingerprint(fingerprint);
   LOG((CLOG_NOTE "server fingerprint: %s", fingerprint.c_str()));
 
-  String trustedServersFilename;
+  std::string trustedServersFilename;
   trustedServersFilename = deskflow::string::sprintf(
       "%s/%s/%s", ARCH->getProfileDirectory().c_str(), kFingerprintDirName, kFingerprintTrustedServersFilename
   );
 
   // check if this fingerprint exist
-  String fileLine;
+  std::string fileLine;
   std::ifstream file;
   file.open(deskflow::filesystem::path(trustedServersFilename));