Add function Name() to generate name from template.

modules/gmt/cmpstr_alt.c++

@@ -142,6 +142,34 @@ bool CmpStrEx(const std::string& expr, const std::string& str)
 
   State(const std::string& str):root(Parse(str)),s(str) {InitCursors(root.get());}
 
+  std::string Name() const
+  {
+   const struct Block* b=root.get();
+   std::string res;
+   while(true)
+   {
+    // Processing current block
+    switch(b->type)
+    {
+     case(Block::TEXT): {res+=s.substr(b->b,b->e-b->b); break;}
+     case(Block::OPTIONAL): {b=b->child.get(); goto next;}
+     case(Block::VARIANTS): {b=b->child.get(); goto next;}
+     case(Block::DELIM): {b=b->parent; break;}
+     default: {}
+    }
+    // Go to next block
+    while(true)
+    {
+     if(nullptr!=b->next) {b=b->next.get(); goto next;}
+     if(nullptr!=b->parent) b=b->parent;
+     else break;
+    }
+    if(nullptr==b->next && nullptr==b->parent) break;
+    next: ;
+   }
+   return res;
+  }
+
 
   bool CmpSmb(const char c)
   {
@@ -197,6 +225,7 @@ bool CmpStrEx(const std::string& expr, const std::string& str)
 
 // Main function
  struct State st(expr);
+ std::cout<<"Name is "<<st.Name()<<std::endl;
 
  // Dump code
  {