Add initial files for physical LED controller
This daemon uses sysfs entry for a particular LED and then triggers
necessary action. Name and Path of the LED is needed as command line
options to make sure this is genreric implementation.
Change-Id: I3d52f1491fcb6ae8119b399a4d2c6770a3f5db30
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
diff --git a/argument.cpp b/argument.cpp
new file mode 100644
index 0000000..3df84e7
--- /dev/null
+++ b/argument.cpp
@@ -0,0 +1,83 @@
+/**
+ * Copyright © 2016 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <iostream>
+#include <iterator>
+#include <algorithm>
+#include <cassert>
+#include "argument.hpp"
+
+namespace phosphor
+{
+namespace led
+{
+
+const std::string ArgumentParser::true_string = "true";
+const std::string ArgumentParser::empty_string = "";
+
+const char* ArgumentParser::optionstr = "n:p:?h";
+const option ArgumentParser::options[] =
+{
+ { "name", required_argument, nullptr, 'n' },
+ { "path", required_argument, nullptr, 'p' },
+ { "help", no_argument, nullptr, 'h' },
+ { 0, 0, 0, 0},
+};
+
+ArgumentParser::ArgumentParser(int argc, char** argv)
+{
+ int option = 0;
+ while(-1 != (option = getopt_long(argc, argv, optionstr, options, nullptr)))
+ {
+ if ((option == '?') || (option == 'h'))
+ {
+ usage(argv);
+ exit(-1);
+ }
+
+ auto i = &options[0];
+ while ((i->val != option) && (i->val != 0)) ++i;
+
+ if (i->val)
+ arguments[i->name] = (i->has_arg ? optarg : true_string);
+ }
+}
+
+const std::string& ArgumentParser::operator[](const std::string& opt)
+{
+ auto i = arguments.find(opt);
+ if (i == arguments.end())
+ {
+ return empty_string;
+ }
+ else
+ {
+ return i->second;
+ }
+}
+
+void ArgumentParser::usage(char** argv)
+{
+ std::cerr << "Usage: " << argv[0] << " [options]" << std::endl;
+ std::cerr << "Options:" << std::endl;
+ std::cerr << " --help Print this menu" << std::endl;
+ std::cerr << " --name=<name> Name of the LED"
+ << std::endl;
+ std::cerr << " --path=<path> sysfs path like /sys/class/leds"
+ << std::endl;
+}
+} // namespace led
+} // namespace phosphor