--- menu-2.1.14/install-menu/install-menu.cc~	2004-06-18 19:22:01 +0400
+++ menu-2.1.14/install-menu/install-menu.cc	2004-06-18 19:22:11 +0400
@@ -185,6 +185,7 @@ void add_functions()
   store_func(new functions::translate);
   store_func(new functions::encode_translate);
   store_func(new functions::encode);
+  store_func(new functions::substr);
 }
 
 cat_str *get_eq_cat_str(parsestream &i)
--- menu-2.1.14/install-menu/functions.h~	2004-06-18 19:23:19 +0400
+++ menu-2.1.14/install-menu/functions.h	2004-06-18 19:23:01 +0400
@@ -307,6 +307,12 @@ namespace functions {
     const char * getName() const {return "encode";}
   };
 
+  struct substr:public funcN<3>{
+    std::ostream &output(std::ostream &o, std::vector<cat_str *> &,
+	  std::map<std::string, std::string> &);
+    const char * getName() const {return "substr";}
+  };
+
 }
 
 #endif
--- menu-2.1.41/install-menu/functions.cc~	2008-11-10 17:48:15 +0300
+++ menu-2.1.41/install-menu/functions.cc	2008-11-10 17:48:51 +0300
@@ -29,6 +29,8 @@
 #include <stringtoolbox.h>
 #include <iostream>
 #include <cstdio>
+#include <cstdlib>
+#include <cstring>
 #include <unistd.h>
 
 using std::ostream;
@@ -570,4 +571,32 @@ ostream &encode::output(ostream &o, vect
   return o << buf;
 }
 
+/*
+ * this method get substring from string
+ */
+ostream &substr::output(ostream &o, vector<cat_str *> &args,
+			   map<string, string> &menuentry){
+  int ps, sz;
+  string s=args[0]->soutput(menuentry);
+  string sps=args[1]->soutput(menuentry);
+  string ssz=args[2]->soutput(menuentry);
+
+  if ( !s.length() )
+    return o << s;
+
+  ps = atoi( sps.c_str() );
+  if ( ps < 0 )
+    ps = 0;
+  if ( ps >= s.length() )
+    ps = s.length() - 1;
+
+  sz = atoi( ssz.c_str() );
+  if ( sz < 0 )
+    sz = 0;
+  if ( ps + sz > s.length() )
+    sz = s.length() - ps;
+
+  return o << s.substr( ps, sz );
+}
+
 }