Add code to accept command line arguments
Accepts command line arguments for path, interested GPIO transition
and an optional systemd unit file to be called into when the GPIO
transitions per expectation.
Change-Id: I98d967d36cfbb768bc9d0dd04517575fa7e408fe
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
diff --git a/mainapp.cpp b/mainapp.cpp
new file mode 100644
index 0000000..671b73c
--- /dev/null
+++ b/mainapp.cpp
@@ -0,0 +1,64 @@
+/**
+ * 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 <string>
+#include "argument.hpp"
+
+static void exitWithError(const char* err, char** argv)
+{
+ phosphor::gpio::ArgumentParser::usage(argv);
+ std::cerr << "ERROR: " << err << "\n";
+ exit(EXIT_FAILURE);
+}
+
+int main(int argc, char** argv)
+{
+ // Read arguments.
+ auto options = phosphor::gpio::ArgumentParser(argc, argv);
+
+ // Parse out path argument.
+ auto path = (options)["path"];
+ if (path == phosphor::gpio::ArgumentParser::emptyString)
+ {
+ exitWithError("path not specified.", argv);
+ }
+
+ // Parse out key number that we are interested in
+ // Its integer mapping to the GPIO key configured by the kernel
+ auto key = (options)["key"];
+ if (key == phosphor::gpio::ArgumentParser::emptyString)
+ {
+ exitWithError("Key not specified.", argv);
+ }
+ // TODO : Convert key to integer
+
+ // Parse out assertion polarity interested in
+ // Its either 1 or 0 for press / release
+ auto polarity = (options)["polarity"];
+ if (polarity == phosphor::gpio::ArgumentParser::emptyString)
+ {
+ exitWithError("Polarity not specified.", argv);
+ }
+ // TODO : Convert polarity to integer
+
+ // Parse out target argument. It is fine if the caller does not
+ // pass this if they are not interested in calling into any target
+ // on meeting a condition.
+ auto target = (options)["target"];
+
+ return 0;
+}