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+//
+// Automated Testing Framework (atf)
+//
+// Copyright (c) 2007 The NetBSD Foundation, Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// 2. 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.
+//
+// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+//
+
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
+extern "C" {
+#include <unistd.h>
+}
+
+#include <cassert>
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <iostream>
+
+#include "application.hpp"
+#include "defs.hpp"
+#include "ui.hpp"
+
+#if !defined(HAVE_VSNPRINTF_IN_STD)
+namespace std {
+using ::vsnprintf;
+}
+#endif // !defined(HAVE_VSNPRINTF_IN_STD)
+
+namespace impl = tools::application;
+#define IMPL_NAME "tools::application"
+
+// ------------------------------------------------------------------------
+// The "usage_error" class.
+// ------------------------------------------------------------------------
+
+impl::usage_error::usage_error(const char *fmt, ...)
+ throw() :
+ std::runtime_error("usage_error; message unformatted")
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ std::vsnprintf(m_text, sizeof(m_text), fmt, ap);
+ va_end(ap);
+}
+
+impl::usage_error::~usage_error(void)
+ throw()
+{
+}
+
+const char*
+impl::usage_error::what(void)
+ const throw()
+{
+ return m_text;
+}
+
+// ------------------------------------------------------------------------
+// The "application" class.
+// ------------------------------------------------------------------------
+
+impl::option::option(char ch,
+ const std::string& a,
+ const std::string& desc) :
+ m_character(ch),
+ m_argument(a),
+ m_description(desc)
+{
+}
+
+bool
+impl::option::operator<(const impl::option& o)
+ const
+{
+ return m_character < o.m_character;
+}
+
+impl::app::app(const std::string& description,
+ const std::string& manpage,
+ const std::string& global_manpage) :
+ m_hflag(false),
+ m_argc(-1),
+ m_argv(NULL),
+ m_prog_name(NULL),
+ m_description(description),
+ m_manpage(manpage),
+ m_global_manpage(global_manpage)
+{
+}
+
+impl::app::~app(void)
+{
+}
+
+bool
+impl::app::inited(void)
+{
+ return m_argc != -1;
+}
+
+impl::app::options_set
+impl::app::options(void)
+{
+ options_set opts = specific_options();
+ opts.insert(option('h', "", "Shows this help message"));
+ return opts;
+}
+
+std::string
+impl::app::specific_args(void)
+ const
+{
+ return "";
+}
+
+impl::app::options_set
+impl::app::specific_options(void)
+ const
+{
+ return options_set();
+}
+
+void
+impl::app::process_option(int ch ATF_DEFS_ATTRIBUTE_UNUSED,
+ const char* arg ATF_DEFS_ATTRIBUTE_UNUSED)
+{
+}
+
+void
+impl::app::process_options(void)
+{
+ assert(inited());
+
+ std::string optstr;
+#if defined(HAVE_GNU_GETOPT)
+ optstr += '+'; // Turn on POSIX behavior.
+#endif
+ optstr += ':';
+ {
+ options_set opts = options();
+ for (options_set::const_iterator iter = opts.begin();
+ iter != opts.end(); iter++) {
+ const option& opt = (*iter);
+
+ optstr += opt.m_character;
+ if (!opt.m_argument.empty())
+ optstr += ':';
+ }
+ }
+
+ int ch;
+ const int old_opterr = ::opterr;
+ ::opterr = 0;
+ while ((ch = ::getopt(m_argc, m_argv, optstr.c_str())) != -1) {
+ switch (ch) {
+ case 'h':
+ m_hflag = true;
+ break;
+
+ case ':':
+ throw usage_error("Option -%c requires an argument.",
+ ::optopt);
+
+ case '?':
+ throw usage_error("Unknown option -%c.", ::optopt);
+
+ default:
+ process_option(ch, ::optarg);
+ }
+ }
+ m_argc -= ::optind;
+ m_argv += ::optind;
+
+ // Clear getopt state just in case the test wants to use it.
+ opterr = old_opterr;
+ optind = 1;
+#if defined(HAVE_OPTRESET)
+ optreset = 1;
+#endif
+}
+
+void
+impl::app::usage(std::ostream& os)
+{
+ assert(inited());
+
+ std::string args = specific_args();
+ if (!args.empty())
+ args = " " + args;
+ os << ui::format_text_with_tag(std::string(m_prog_name) + " [options]" +
+ args, "Usage: ", false) << "\n\n"
+ << ui::format_text(m_description) << "\n\n";
+
+ options_set opts = options();
+ assert(!opts.empty());
+ os << "Available options:\n";
+ size_t coldesc = 0;
+ for (options_set::const_iterator iter = opts.begin();
+ iter != opts.end(); iter++) {
+ const option& opt = (*iter);
+
+ if (opt.m_argument.length() + 1 > coldesc)
+ coldesc = opt.m_argument.length() + 1;
+ }
+ for (options_set::const_iterator iter = opts.begin();
+ iter != opts.end(); iter++) {
+ const option& opt = (*iter);
+
+ std::string tag = std::string(" -") + opt.m_character;
+ if (opt.m_argument.empty())
+ tag += " ";
+ else
+ tag += " " + opt.m_argument + " ";
+ os << ui::format_text_with_tag(opt.m_description, tag, false,
+ coldesc + 10) << "\n";
+ }
+ os << "\n";
+
+ std::string gmp;
+ if (!m_global_manpage.empty())
+ gmp = " and " + m_global_manpage;
+ os << ui::format_text("For more details please see " + m_manpage +
+ gmp + ".")
+ << "\n";
+}
+
+int
+impl::app::run(int argc, char* const* argv)
+{
+ assert(argc > 0);
+ assert(argv != NULL);
+
+ m_argc = argc;
+ m_argv = argv;
+
+ m_argv0 = m_argv[0];
+
+ m_prog_name = std::strrchr(m_argv[0], '/');
+ if (m_prog_name == NULL)
+ m_prog_name = m_argv[0];
+ else
+ m_prog_name++;
+
+ // Libtool workaround: if running from within the source tree (binaries
+ // that are not installed yet), skip the "lt-" prefix added to files in
+ // the ".libs" directory to show the real (not temporary) name.
+ if (std::strncmp(m_prog_name, "lt-", 3) == 0)
+ m_prog_name += 3;
+
+ const std::string bug =
+ std::string("This is probably a bug in ") + m_prog_name +
+ " or one of the libraries it uses. Please report this problem to "
+ PACKAGE_BUGREPORT " and provide as many details as possible "
+ "describing how you got to this condition.";
+
+ int errcode;
+ try {
+ int oldargc = m_argc;
+
+ process_options();
+
+ if (m_hflag) {
+ if (oldargc != 2)
+ throw usage_error("-h must be given alone.");
+
+ usage(std::cout);
+ errcode = EXIT_SUCCESS;
+ } else
+ errcode = main();
+ } catch (const usage_error& e) {
+ std::cerr << ui::format_error(m_prog_name, e.what()) << "\n"
+ << ui::format_info(m_prog_name, std::string("Type `") +
+ m_prog_name + " -h' for more details.")
+ << "\n";
+ errcode = EXIT_FAILURE;
+ } catch (const std::runtime_error& e) {
+ std::cerr << ui::format_error(m_prog_name, std::string(e.what()))
+ << "\n";
+ errcode = EXIT_FAILURE;
+ } catch (const std::exception& e) {
+ std::cerr << ui::format_error(m_prog_name, std::string("Caught "
+ "unexpected error: ") + e.what() + "\n" + bug) << "\n";
+ errcode = EXIT_FAILURE;
+ } catch (...) {
+ std::cerr << ui::format_error(m_prog_name, std::string("Caught "
+ "unknown error\n") + bug) << "\n";
+ errcode = EXIT_FAILURE;
+ }
+ return errcode;
+}