// file : libbuild2/filesystem.txx -*- C++ -*- // copyright : Copyright (c) 2014-2019 Code Synthesis Ltd // license : MIT; see accompanying LICENSE file #include <type_traits> // is_base_of #include <libbuild2/diagnostics.hxx> namespace build2 { template <typename T> fs_status<butl::rmfile_status> rmfile (context& ctx, const path& f, const T& t, uint16_t v) { using namespace butl; // We don't want to print the command if we couldn't remove the file // because it does not exist (just like we don't print the update command // if the file is up to date). This makes the below code a bit ugly. // auto print = [&f, &t, v] () { if (verb >= v) { if (verb >= 2) text << "rm " << f; else if (verb) text << "rm " << t; } }; rmfile_status rs; try { rs = ctx.dry_run ? file_exists (f) ? rmfile_status::success : rmfile_status::not_exist : try_rmfile (f); } catch (const system_error& e) { print (); fail << "unable to remove file " << f << ": " << e << endf; } if (rs == rmfile_status::success) print (); return rs; } template <typename T> fs_status<butl::rmdir_status> rmdir (context& ctx, const dir_path& d, const T& t, uint16_t v) { using namespace butl; // We don't want to print the command if we couldn't remove the directory // because it does not exist (just like we don't print mkdir if it already // exists) or if it is not empty. This makes the below code a bit ugly. // auto print = [&d, &t, v] () { if (verb >= v) { if (verb >= 2) text << "rmdir " << d; else if (verb) text << (std::is_base_of<dir_path, T>::value ? "rmdir " : "rm ") << t; } }; bool w (false); // Don't try to remove working directory. rmdir_status rs; try { rs = ctx.dry_run ? dir_exists (d) ? rmdir_status::success : rmdir_status::not_exist : !(w = work.sub (d)) ? try_rmdir (d) : rmdir_status::not_empty; } catch (const system_error& e) { print (); fail << "unable to remove directory " << d << ": " << e << endf; } switch (rs) { case rmdir_status::success: { print (); break; } case rmdir_status::not_empty: { if (verb >= v && verb >= 2) { text << d << " is " << (w ? "current working directory" : "not empty") << ", not removing"; } break; } case rmdir_status::not_exist: break; } return rs; } }