Remove remaining non-boost_pp libraries as requirements.

src/main.cpp

@@ -6,7 +6,7 @@
 
 #include <iostream>
 #include <list>
-#include <boost/algorithm/string/trim.hpp>
+#include <regex>
 
 #define _CRT_SECURE_NO_WARNINGS
 #include <chaiscript/chaiscript.hpp>
@@ -80,7 +80,21 @@ std::string get_next_command() {
     char *input_raw = readline("eval> ");
     if ( input_raw ) {
       add_history(input_raw);
-      retval = boost::trim_copy_if(std::string(input_raw),boost::algorithm::is_any_of(" \t"));
+
+      std::string val(input_raw);
+      size_t pos = val.find_first_not_of("\t \n");
+      if (pos != std::string::npos)
+      {
+        val.erase(0, pos);
+      }
+      pos = val.find_last_not_of("\t \n");
+      if (pos != std::string::npos)
+      {
+        val.erase(pos+1, std::string::npos);
+      }
+
+      retval = val;
+
       ::free(input_raw);
     }
   }