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