static StatusParagraphs load_current_database(Files::Filesystem& fs,
const fs::path& vcpkg_dir_status_file,
const fs::path& vcpkg_dir_status_file_old)
{
if (!fs.exists(vcpkg_dir_status_file))
{
if (!fs.exists(vcpkg_dir_status_file_old))
{
// no status file, use empty db
return StatusParagraphs();
}
fs.rename(vcpkg_dir_status_file_old, vcpkg_dir_status_file);
}
auto pghs = Paragraphs::get_paragraphs(fs, vcpkg_dir_status_file).value_or_exit(VCPKG_LINE_INFO);
std::vector<std::unique_ptr<StatusParagraph>> status_pghs;
for (auto&& p : pghs)
{
status_pghs.push_back(std::make_unique<StatusParagraph>(std::move(p)));
}
return StatusParagraphs(std::move(status_pghs));
}
static void upgrade_to_slash_terminated_sorted_format(Files::Filesystem& fs,
std::vector<std::string>* lines,
const fs::path& listfile_path)
{
static bool was_tracked = false;
if (lines->empty())
{
return;
}
if (lines->at(0).back() == '/')
{
return; // File already in the new format
}
if (!was_tracked)
{
was_tracked = true;
Metrics::track_property("listfile", "update to new format");
}
// The files are sorted such that directories are placed just before the files they contain
// (They are not necessarily sorted alphabetically, e.g. libflac)
// Therefore we can detect the entries that represent directories by comparing every element with the next one
// and checking if the next has a slash immediately after the current one's length
for (size_t i = 0; i < lines->size() - 1; i++)
{
std::string& current_string = lines->at(i);
const std::string& next_string = lines->at(i + 1);
const size_t potential_slash_char_index = current_string.length();
// Make sure the index exists first
if (next_string.size() > potential_slash_char_index && next_string.at(potential_slash_char_index) == '/')
{
current_string += '/'; // Mark as a directory
}
}
// After suffixing the directories with a slash, we can now sort.
// We cannot sort before adding the suffixes because the following (actual example):
/*
x86-windows/include/FLAC <<<<<< This would be separated from its group due to sorting
x86-windows/include/FLAC/all.h
x86-windows/include/FLAC/assert.h
x86-windows/include/FLAC/callback.h
x86-windows/include/FLAC++
x86-windows/include/FLAC++/all.h
x86-windows/include/FLAC++/decoder.h
x86-windows/include/FLAC++/encoder.h
*
x86-windows/include/FLAC/ <<<<<< This will now be kept with its group when sorting
x86-windows/include/FLAC/all.h
x86-windows/include/FLAC/assert.h
x86-windows/include/FLAC/callback.h
x86-windows/include/FLAC++/
x86-windows/include/FLAC++/all.h
x86-windows/include/FLAC++/decoder.h
x86-windows/include/FLAC++/encoder.h
*/
// Note that after sorting, the FLAC++/ group will be placed before the FLAC/ group
// The new format is lexicographically sorted
std::sort(lines->begin(), lines->end());
// Replace the listfile on disk
const fs::path updated_listfile_path = listfile_path.generic_string() + "_updated";
fs.write_lines(updated_listfile_path, *lines);
fs.rename(updated_listfile_path, listfile_path);
}