/* vim: set sw=4 sts=4 et foldmethod=syntax : */ /** \file * * Example \ref example_version_spec.cc "example_version_spec.cc" . * * \ingroup g_names */ /** \example example_version_spec.cc * * This example demonstrates how to use VersionSpec. */ #include <paludis/paludis.hh> #include "example_command_line.hh" #include <iostream> #include <iomanip> #include <cstdlib> #include <set> using namespace paludis; using namespace examples; using std::cout; using std::endl; using std::setw; using std::left; using std::boolalpha; using std::hex; int main(int argc, char * argv[]) { try { CommandLine::get_instance()->run(argc, argv, "example_version_spec", "EXAMPLE_VERSION_SPEC_OPTIONS", "EXAMPLE_VERSION_SPEC_CMDLINE"); /* Make a set of versions. Use user_version_spec_options() for the * options parameter for VersionSpec's constructor for handling any * user-inputted data. */ std::set<VersionSpec> versions; versions.insert(VersionSpec("1.0", user_version_spec_options())); versions.insert(VersionSpec("1.1", user_version_spec_options())); versions.insert(VersionSpec("1.2", user_version_spec_options())); versions.insert(VersionSpec("1.2-r1", user_version_spec_options())); versions.insert(VersionSpec("2.0", user_version_spec_options())); versions.insert(VersionSpec("2.0-try1", user_version_spec_options())); versions.insert(VersionSpec("2.0-scm", user_version_spec_options())); versions.insert(VersionSpec("9999", user_version_spec_options())); /* For each version... */ for (std::set<VersionSpec>::const_iterator v(versions.begin()), v_end(versions.end()) ; v != v_end ; ++v) { /* Versions are stringifiable */ cout << *v << ":" << endl; /* Show the output of various members. Not all of these are of much * direct use. */ cout << " " << left << setw(24) << "Hash value:" << " " << "0x" << hex << v->hash() << endl; cout << " " << left << setw(24) << "Remove revision:" << " " << v->remove_revision() << endl; cout << " " << left << setw(24) << "Revision only:" << " " << v->revision_only() << endl; cout << " " << left << setw(24) << "Bump:" << " " << v->bump() << endl; cout << " " << left << setw(24) << "Is scm?" << " " << boolalpha << v->is_scm() << endl; cout << " " << left << setw(24) << "Has -try?" << " " << boolalpha << v->has_try_part() << endl; cout << " " << left << setw(24) << "Has -scm?" << " " << boolalpha << v->has_scm_part() << endl; cout << endl; } } catch (const Exception & e) { /* Paludis exceptions can provide a handy human-readable backtrace and * an explanation message. Where possible, these should be displayed. */ cout << endl; cout << "Unhandled exception:" << endl << " * " << e.backtrace("\n * ") << e.message() << " (" << e.what() << ")" << endl; return EXIT_FAILURE; } catch (const std::exception & e) { cout << endl; cout << "Unhandled exception:" << endl << " * " << e.what() << endl; return EXIT_FAILURE; } catch (...) { cout << endl; cout << "Unhandled exception:" << endl << " * Unknown exception type. Ouch..." << endl; return EXIT_FAILURE; } return EXIT_SUCCESS; }