tools: Added a folder where we can keep small usable utilities

tools/errmsg.cpp

@@ -0,0 +1,62 @@
+
+#include <iostream>
+#include <list>
+#include <string>
+
+class Message
+{
+private:
+    std::string _funcname;
+    std::string _msg;
+    std::string _par1;
+
+public:
+    Message(std::string funcname, std::string msg, std::string par1)
+            : _funcname(funcname), _msg(msg), _par1(par1)
+    { }
+
+    std::string msg() const
+    {
+        std::string ret("\"" + _msg + "\"");
+
+        if (! _par1.empty())
+        {
+            std::string::size_type pos = 0;
+            while ((pos = ret.find("%1", pos)) != std::string::npos)
+            {
+                ret.erase(pos, 2);
+                ret.insert(pos, "\" + " + _par1 + " + \"");
+            }
+        }
+
+        return ret;
+    }
+
+    void generateCode() const
+    {
+        std::cout << "    static std::string " << _funcname << "(";
+        if (! _par1.empty())
+            std::cout << "const std::string &" << _par1;
+        std::cout << ") const\n";
+
+        std::cout << "    { return " << msg() << "; }" << std::endl;
+    }
+
+};
+
+
+
+
+int main()
+{
+    // Error messages..
+    std::list<Message> err;
+    err.push_back(Message("memleak", "Memory leak: %1", "varname"));
+
+    // Generate code..
+    for (std::list<Message>::const_iterator it = err.begin(); it != err.end(); ++it)
+        it->generateCode();
+
+    return 0;
+}
+