Started a more flexible USB debugging tool

tools/SConstruct

@@ -4,5 +4,6 @@ env = Environment(CPPFLAGS=["-g", "-O2", "-Wall"])
 env.Program("jstest", ["jstest.c"])
 env.Program("evtest", ["evtest.c"])
 env.Program("usbcat", ["usbcat.cpp"], LIBS = ["usb"])
+env.Program("usbdebug", ["usbdebug.cpp"], LIBS = ["usb"])
 
 # EOF #

tools/usbdebug.cpp

@@ -0,0 +1,90 @@
+#include <string>
+#include <vector>
+#include <iostream>
+
+bool has_prefix(const std::string& lhs, const std::string rhs)
+{
+  if (lhs.length() < rhs.length())
+    return false;
+  else
+    return lhs.compare(0, rhs.length(), rhs) == 0;
+}
+
+bool readline(const std::string& prompt,
+              std::string& line)
+{
+  std::cout << prompt << std::flush;
+  bool ret = !std::getline(std::cin, line).eof();
+  //line = strip(line);
+  return ret;
+}
+
+std::vector<std::string> 
+tokenize(const std::string& str, const std::string& delimiters = " ")
+{
+  std::vector<std::string> tokens;  
+
+  // Skip delimiters at beginning.
+  std::string::size_type lastPos = str.find_first_not_of(delimiters, 0);
+  // Find first "non-delimiter".
+  std::string::size_type pos     = str.find_first_of(delimiters, lastPos);
+
+  while (std::string::npos != pos || std::string::npos != lastPos)
+    {
+      // Found a token, add it to the vector.
+      tokens.push_back(str.substr(lastPos, pos - lastPos));
+      // Skip delimiters.  Note the "not_of"
+      lastPos = str.find_first_not_of(delimiters, pos);
+      // Find next "non-delimiter"
+      pos = str.find_first_of(delimiters, lastPos);
+    }
+
+  return tokens;
+}
+
+int main(int argc, char** argv)
+{
+  std::string line;
+  bool quit = false;
+  while (!quit && readline("\033[32musb\033[0m> ", line))
+    {
+      std::vector<std::string> args = tokenize(line);
+      if (args.empty())
+        {
+        }
+      else
+        {
+          if (0)
+            {
+              for(int i = 0; i < int(args.size()); ++i)
+                {
+                  std::cout << i << ":'" << args[i] << "' ";
+                }
+              std::cout << std::endl;
+            }
+
+          if (args[0] == "help")
+            {
+              std::cout << "help:   Print this help" << std::endl;
+              std::cout << "quit:   Exit usbdebug" << std::endl;
+              std::cout << "send:   Send data to an USB Endpoint" << std::endl;
+            }
+          else if (args[0] == "send")
+            {
+            }
+          else if (args[0] == "quit")
+            {
+              std::cout << "Exiting" << std::endl;
+              quit = true;
+            }
+          else
+            {
+              std::cout << "Unknown command '" << args[0] << "', type 'help' to list all available commands" << std::endl;
+            }
+        }
+    }
+  std::cout << std::endl;
+  return 0;
+}
+
+/* EOF */