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+// Copyright 2010 The Kyua Authors.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+// * Neither the name of Google Inc. nor the names of its contributors
+// may be used to endorse or promote products derived from this software
+// without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "utils/cmdline/globals.hpp"
+
+#include "utils/format/macros.hpp"
+#include "utils/logging/macros.hpp"
+#include "utils/fs/path.hpp"
+#include "utils/sanity.hpp"
+
+namespace cmdline = utils::cmdline;
+
+namespace {
+
+
+/// The name of the binary used to execute the program.
+static std::string Progname;
+
+
+} // anonymous namespace
+
+
+/// Initializes the global state of the CLI.
+///
+/// This function can only be called once during the execution of a program,
+/// unless override_for_testing is set to true.
+///
+/// \param argv0 The value of argv[0]; i.e. the program name.
+/// \param override_for_testing Should always be set to false unless for tests
+/// of this functionality, which may set this to true to redefine internal
+/// state.
+void
+cmdline::init(const char* argv0, const bool override_for_testing)
+{
+ if (!override_for_testing)
+ PRE_MSG(Progname.empty(), "cmdline::init called more than once");
+ Progname = utils::fs::path(argv0).leaf_name();
+ LD(F("Program name: %s") % Progname);
+ POST(!Progname.empty());
+}
+
+
+/// Gets the program name.
+///
+/// \pre init() must have been called in advance.
+///
+/// \return The program name.
+const std::string&
+cmdline::progname(void)
+{
+ PRE_MSG(!Progname.empty(), "cmdline::init not called yet");
+ return Progname;
+}