http: move THttpCallArg::ReplaceAllinContent method to protected area

Will be used in different plugins to modify delivered web page

net/http/inc/THttpCallArg.h

@@ -61,6 +61,8 @@ protected:
 
    TString CountHeader(const TString &buf, Int_t number = -1111) const;
 
+   void ReplaceAllinContent(const std::string &from, const std::string &to, bool once = false);
+
 private:
    std::shared_ptr<THttpWSEngine> fWSEngine; ///<!  web-socket engine, which supplied to run created web socket
 
@@ -70,8 +72,6 @@ private:
    void AssignWSId();
    std::shared_ptr<THttpWSEngine> TakeWSEngine();
 
-   void ReplaceAllinContent(const std::string &from, const std::string &to);
-
    /** Method used to modify content of web page used by web socket handler */
    virtual void CheckWSPageContent(THttpWSHandler *) {}
 

net/http/src/THttpCallArg.cxx

@@ -257,11 +257,12 @@ std::shared_ptr<THttpWSEngine> THttpCallArg::TakeWSEngine()
 /// Replace all occurrences of \param from by \param to in content
 /// Used only internally
 
-void THttpCallArg::ReplaceAllinContent(const std::string &from, const std::string &to)
+void THttpCallArg::ReplaceAllinContent(const std::string &from, const std::string &to, bool once)
 {
    std::size_t start_pos = 0;
    while((start_pos = fContent.find(from, start_pos)) != std::string::npos) {
       fContent.replace(start_pos, from.length(), to);
+      if (once) return;
       start_pos += to.length(); // Handles case where 'to' is a substring of 'from'
    }
 }