add utility returning hashed version of firmware-uuid of a L1T menu

CondTools/L1Trigger/bin/BuildFile.xml

@@ -0,0 +1,3 @@
+<bin name="l1tHashMenuFirmwareUUID" file="l1tHashMenuFirmwareUUID.cpp">
+  <use name="CondFormats/L1TObjects"/>
+</bin>

CondTools/L1Trigger/bin/l1tHashMenuFirmwareUUID.cpp

@@ -0,0 +1,50 @@
+#include <iostream>
+#include <string>
+
+#include "CondFormats/L1TObjects/interface/L1TUtmTriggerMenu.h"
+
+void showHelpMessage() {
+  std::cout << "---------------------------------------------------------------\n";
+  std::cout << "===                 l1tHashMenuFirmwareUUID                 ===\n";
+  std::cout << "=== compute 32-bit hashed version of L1T-menu firmware UUID ===\n";
+  std::cout << "---------------------------------------------------------------\n";
+  std::cout << "\n"
+            << "Purpose:\n"
+            << "  return 32-bit hashed version (type: int) of the firmware-UUID of a L1T menu\n\n"
+            << "Input:\n"
+            << "  firmware-UUID of a L1T menu, i.e. value of the field \"uuid-firmware\""
+            << " in the .xml file containing the L1T menu;\n"
+            << "  given a database payload XYZ, the .xml file can be obtained via \"conddb dump XYZ > tmp.xml\"\n"
+            << "  (if \"-h\" or \"--help\" are specified, this help message is shown)\n\n"
+            << "Exit code:\n"
+            << "  1 if no command-line arguments are specified, 0 otherwise\n\n"
+            << "Example:\n"
+            << "  > l1tHashMenuFirmwareUUID 7a1a9c0b-5e34-4c25-804f-2ae8094c4832\n\n";
+}
+
+int main(int argc, char** argv) {
+  if (argc < 2) {
+    std::cerr << "ERROR: no L1T-menu firmware UUID specified (hint: specify --help for more info).\n";
+    return 1;
+  } else {
+    for (int idx = 1; idx < argc; ++idx) {
+      std::string const argv_i = argv[idx];
+      if (argv_i == "-h" or argv_i == "--help") {
+        showHelpMessage();
+        return 0;
+      }
+    }
+
+    if (argc > 2) {
+      std::cerr << "WARNING: specified " << argc - 1 << " command-line arguments,"
+                << " but only the first one will be used (" << argv[1] << ").\n";
+    }
+  }
+
+  L1TUtmTriggerMenu foo;
+  foo.setFirmwareUuid(argv[1]);
+
+  std::cout << int(foo.getFirmwareUuidHashed()) << std::endl;
+
+  return 0;
+}