evdevpp: Add evmon utility
Add a sample/test ev event monitor program for evdevpp.
Change-Id: I46dcc47b67b377a1abd79ceef3bc28dbf269d6f2
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/evdevpp/test/.gitignore b/evdevpp/test/.gitignore
index e69de29..707e6e5 100644
--- a/evdevpp/test/.gitignore
+++ b/evdevpp/test/.gitignore
@@ -0,0 +1 @@
+/evmon
diff --git a/evdevpp/test/Makefile.am b/evdevpp/test/Makefile.am
index 36455d7..321721a 100644
--- a/evdevpp/test/Makefile.am
+++ b/evdevpp/test/Makefile.am
@@ -6,3 +6,21 @@
noinst_PROGRAMS =
TESTS = $(check_PROGRAMS)
+
+noinst_PROGRAMS += evmon
+evmon_SOURCES = \
+ evmon.cpp
+evmon_CXXFLAGS = \
+ $(LIBEVDEV_CFLAGS) \
+ ${PHOSPHOR_DBUS_INTERFACES_CFLAGS} \
+ $(PHOSPHOR_LOGGING_CFLAGS) \
+ $(SDBUSPLUS_CFLAGS) \
+ $(SYSTEMD_CFLAGS)
+evmon_LDFLAGS = \
+ $(OESDK_TESTCASE_FLAGS)
+evmon_LDADD = \
+ $(LIBEVDEV_LIBS) \
+ ${PHOSPHOR_DBUS_INTERFACES_LIBS} \
+ $(PHOSPHOR_LOGGING_LIBS) \
+ $(SDBUSPLUS_LIBS) \
+ $(SYSTEMD_LIBS)
diff --git a/evdevpp/test/evmon.cpp b/evdevpp/test/evmon.cpp
new file mode 100644
index 0000000..26163a7
--- /dev/null
+++ b/evdevpp/test/evmon.cpp
@@ -0,0 +1,158 @@
+/**
+ * Copyright © 2017 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 <algorithm>
+#include <cassert>
+#include <iostream>
+#include <iterator>
+#include <memory>
+#include "argument.hpp"
+#include "evdevpp/evdev.hpp"
+#include "sdevent/event.hpp"
+#include "sdevent/io.hpp"
+#include "utility.hpp"
+
+namespace phosphor
+{
+namespace fan
+{
+namespace util
+{
+
+ArgumentParser::ArgumentParser(int argc, char** argv)
+{
+ auto option = 0;
+ while (-1 != (option = getopt_long(argc, argv, optionstr, options, NULL)))
+ {
+ 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]\n";
+ std::cerr << "Options:\n";
+ std::cerr << " --path evdev devpath\n";
+ std::cerr << " --type evdev type\n";
+ std::cerr << " --code evdev code\n";
+ std::cerr << std::flush;
+}
+
+const option ArgumentParser::options[] =
+{
+ { "path", required_argument, NULL, 'p' },
+ { "type", required_argument, NULL, 't' },
+ { "code", required_argument, NULL, 'c' },
+ { 0, 0, 0, 0},
+};
+
+const char* ArgumentParser::optionstr = "p:t:c:";
+
+const std::string ArgumentParser::true_string = "true";
+const std::string ArgumentParser::empty_string = "";
+
+static void exit_with_error(const char* err, char** argv)
+{
+ ArgumentParser::usage(argv);
+ std::cerr << "\n";
+ std::cerr << "ERROR: " << err << "\n";
+ exit(-1);
+}
+
+} // namespace util
+} // namespace fan
+} // namespace phosphor
+
+int main(int argc, char* argv[])
+{
+ using namespace phosphor::fan::util;
+
+ auto options = std::make_unique<ArgumentParser>(argc, argv);
+ auto path = (*options)["path"];
+ auto stype = (*options)["type"];
+ auto scode = (*options)["code"];
+ unsigned int type = EV_KEY;
+
+ if (path == ArgumentParser::empty_string)
+ {
+ exit_with_error("Path not specified or invalid.", argv);
+ }
+ if (stype != ArgumentParser::empty_string)
+ {
+ type = stoul(stype);
+ }
+
+ if (scode == ArgumentParser::empty_string)
+ {
+ exit_with_error("Keycode not specified or invalid.", argv);
+ }
+ options.reset();
+
+ auto loop = sdevent::event::newDefault();
+ phosphor::fan::util::FileDescriptor fd(
+ open(path.c_str(), O_RDONLY | O_NONBLOCK));
+ auto evdev = evdevpp::evdev::newFromFD(fd());
+ sdevent::event::io::IO callback(
+ loop,
+ fd(),
+ [&evdev](auto& s)
+ {
+ unsigned int type, code, value;
+ std::tie(type, code, value) = evdev.next();
+ std::cout <<
+ "type: " << libevdev_event_type_get_name(type) <<
+ " code: " << libevdev_event_code_get_name(type, code) <<
+ " value: " << value << "\n";
+ });
+
+ auto value = evdev.fetch(type, stoul(scode));
+ std::cout <<
+ "type: " << libevdev_event_type_get_name(type) <<
+ " code: " << libevdev_event_code_get_name(type, stoul(scode)) <<
+ " value: " << value << "\n";
+
+ loop.loop();
+
+ return 0;
+}