OutputCallback: Accept std::string argument

Source/CTest/cmCTestBuildAndTestHandler.cxx

@@ -123,11 +123,8 @@ public:
         s += "\n";
       });
 
-    cmSystemTools::SetStdoutCallback(
-      [&s](const char* m, size_t len) { s.append(m, len); });
-
-    cmSystemTools::SetStderrCallback(
-      [&s](const char* m, size_t len) { s.append(m, len); });
+    cmSystemTools::SetStdoutCallback([&s](std::string const& m) { s += m; });
+    cmSystemTools::SetStderrCallback([&s](std::string const& m) { s += m; });
 
     this->CM.SetProgressCallback([&s](const char* msg, float /*unused*/) {
       s += msg;

Source/QtDialog/QCMake.cxx

@@ -29,9 +29,9 @@ QCMake::QCMake(QObject* p)
       this->messageCallback(msg, title);
     });
   cmSystemTools::SetStdoutCallback(
-    [this](const char* msg, size_t len) { this->stdoutCallback(msg, len); });
+    [this](std::string const& msg) { this->stdoutCallback(msg); });
   cmSystemTools::SetStderrCallback(
-    [this](const char* msg, size_t len) { this->stderrCallback(msg, len); });
+    [this](std::string const& msg) { this->stderrCallback(msg); });
 
   this->CMakeInstance = new cmake(cmake::RoleProject, cmState::Project);
   this->CMakeInstance->SetCMakeEditCommand(
@@ -365,15 +365,15 @@ void QCMake::messageCallback(const char* msg, const char* /*title*/)
   QCoreApplication::processEvents();
 }
 
-void QCMake::stdoutCallback(const char* msg, size_t len)
+void QCMake::stdoutCallback(std::string const& msg)
 {
-  emit this->outputMessage(QString::fromLocal8Bit(msg, int(len)));
+  emit this->outputMessage(QString::fromStdString(msg));
   QCoreApplication::processEvents();
 }
 
-void QCMake::stderrCallback(const char* msg, size_t len)
+void QCMake::stderrCallback(std::string const& msg)
 {
-  emit this->outputMessage(QString::fromLocal8Bit(msg, int(len)));
+  emit this->outputMessage(QString::fromStdString(msg));
   QCoreApplication::processEvents();
 }
 

Source/QtDialog/QCMake.h

@@ -170,8 +170,8 @@ protected:
   bool interruptCallback();
   void progressCallback(const char* msg, float percent);
   void messageCallback(const char* msg, const char* title);
-  void stdoutCallback(const char* msg, size_t len);
-  void stderrCallback(const char* msg, size_t len);
+  void stdoutCallback(std::string const& msg);
+  void stderrCallback(std::string const& msg);
 
   bool WarnUninitializedMode;
   bool WarnUnusedMode;

Source/cmSystemTools.cxx

@@ -308,7 +308,7 @@ void cmSystemTools::SetStderrCallback(OutputCallback f)
 void cmSystemTools::Stderr(const std::string& s)
 {
   if (s_StderrCallback) {
-    s_StderrCallback(s.c_str(), s.length());
+    s_StderrCallback(s);
   } else {
     std::cerr << s << std::flush;
   }
@@ -317,7 +317,7 @@ void cmSystemTools::Stderr(const std::string& s)
 void cmSystemTools::Stdout(const std::string& s)
 {
   if (s_StdoutCallback) {
-    s_StdoutCallback(s.c_str(), s.length());
+    s_StdoutCallback(s);
   } else {
     std::cout << s << std::flush;
   }

Source/cmSystemTools.h

@@ -80,7 +80,7 @@ public:
     Message(m.c_str(), title);
   }
 
-  using OutputCallback = std::function<void(const char*, size_t)>;
+  using OutputCallback = std::function<void(std::string const&)>;
 
   ///! Send a string to stdout
   static void Stdout(const std::string& s);