osd_file.error attempt_zipped()
{
string [] suffixes = new string[] { ".zip", ".7z" }; //char const *const suffixes[] = { ".zip", ".7z" };
open_func [] open_funcs = new open_func[] { util.archive_file.open_zip, util.archive_file.open_7z };
// loop over archive types
string savepath = m_fullpath;
string filename = "";
for (int i = 0; i < suffixes.Length; i++, m_fullpath = savepath, filename = "")
{
// loop over directory parts up to the start of filename
while (true)
{
// find the final path separator
var dirsep = m_fullpath.find_last_of(PATH_SEPARATOR[0]);
if (dirsep == -1)
{
break;
}
if (restrict_to_mediapath() && !part_of_mediapath(m_fullpath))
{
break;
}
// insert the part from the right of the separator into the head of the filename
if (!filename.empty())
{
filename = filename.Insert(0, "/");
}
filename = filename.Insert(0, m_fullpath.substr(dirsep + 1));
// remove this part of the filename and append an archive extension
m_fullpath = m_fullpath.Substring(0, dirsep);
m_fullpath += suffixes[i];
// attempt to open the archive file
util.archive_file zip;
util.archive_file.error ziperr = open_funcs[i](m_fullpath, out zip);
// chop the archive suffix back off the filename before continuing
m_fullpath = m_fullpath.substr(0, dirsep);
// if we failed to open this file, continue scanning
if (ziperr != util.archive_file.error.NONE)
{
continue;
}
int header = -1;
// see if we can find a file with the right name and (if available) CRC
if ((m_openflags & OPEN_FLAG_HAS_CRC) != 0)
{
header = zip.search(m_crc, filename, false);
}
if (header < 0 && ((m_openflags & OPEN_FLAG_HAS_CRC) != 0))
{
header = zip.search(m_crc, filename, true);
}
// if that failed, look for a file with the right CRC, but the wrong filename
if (header < 0 && ((m_openflags & OPEN_FLAG_HAS_CRC) != 0))
{
header = zip.search(m_crc);
}
// if that failed, look for a file with the right name;
// reporting a bad checksum is more helpful and less confusing than reporting "ROM not found"
if (header < 0)
{
header = zip.search(filename, false);
}
if (header < 0)
{
header = zip.search(filename, true);
}
// if we got it, read the data
if (header >= 0)
{
m_zipfile = zip;
m_ziplength = m_zipfile.current_uncompressed_length();
// build a hash with just the CRC
m_hashes.reset();
m_hashes.add_crc(m_zipfile.current_crc());
return(((m_openflags & OPEN_FLAG_NO_PRELOAD) != 0) ? osd_file.error.NONE : load_zipped_file());
}
// close up the archive file and try the next level
zip.Dispose();
zip = null; //.reset();
}
}
return(osd_file.error.NOT_FOUND);
}
std.error_condition attempt_zipped()
{
//typedef std::error_condition (*open_func)(std::string_view filename, util::archive_file::ptr &result);
//char const *const suffixes[] = { ".zip", ".7z" };
//open_func const open_funcs[ARRAY_LENGTH(suffixes)] = { &util::archive_file::open_zip, &util::archive_file::open_7z };
// loop over archive types
string savepath = m_fullpath;
string filename = "";
for (unsigned i = 0; i < std.size(suffixes); i++, m_fullpath = savepath, filename = "")
{
// loop over directory parts up to the start of filename
while (true)
{
if (!part_of_mediapath(m_fullpath))
{
break;
}
// find the final path separator
//auto const dirsepiter(std::find_if(m_fullpath.rbegin(), m_fullpath.rend(), util::is_directory_separator));
//if (dirsepiter == m_fullpath.rend())
// break;
//std::string::size_type const dirsep(std::distance(m_fullpath.begin(), dirsepiter.base()) - 1);
var dirsep = m_fullpath.find_last_of(PATH_SEPARATOR[0]);
if (dirsep == npos)
{
break;
}
// insert the part from the right of the separator into the head of the filename
if (!filename.empty())
{
filename = filename.insert_(0, "/");
}
filename = filename.insert_(0, m_fullpath.substr(dirsep + 1));
// remove this part of the filename and append an archive extension
m_fullpath = m_fullpath.Substring(0, (int)dirsep);
m_fullpath += suffixes[i];
LOG(null, "emu_file: looking for '{0}' in archive '{1}'\n", filename, m_fullpath);
// attempt to open the archive file
util.archive_file zip;
std.error_condition ziperr = open_funcs[i](m_fullpath, out zip);
// chop the archive suffix back off the filename before continuing
m_fullpath = m_fullpath.substr(0, dirsep);
// if we failed to open this file, continue scanning
if (ziperr)
{
continue;
}
int header = -1;
// see if we can find a file with the right name and (if available) CRC
if ((m_openflags & OPEN_FLAG_HAS_CRC) != 0)
{
header = zip.search(m_crc, filename, false);
}
if (header < 0 && ((m_openflags & OPEN_FLAG_HAS_CRC) != 0))
{
header = zip.search(m_crc, filename, true);
}
// if that failed, look for a file with the right CRC, but the wrong filename
if (header < 0 && ((m_openflags & OPEN_FLAG_HAS_CRC) != 0))
{
header = zip.search(m_crc);
}
// if that failed, look for a file with the right name;
// reporting a bad checksum is more helpful and less confusing than reporting "ROM not found"
if (header < 0)
{
header = zip.search(filename, false);
}
if (header < 0)
{
header = zip.search(filename, true);
}
// if we got it, read the data
if (header >= 0)
{
m_zipfile = zip;
m_ziplength = m_zipfile.current_uncompressed_length();
// build a hash with just the CRC
m_hashes.reset();
m_hashes.add_crc(m_zipfile.current_crc());
m_fullpath = savepath;
return((m_openflags & OPEN_FLAG_NO_PRELOAD) != 0 ? new std.error_condition() : load_zipped_file());
}
// close up the archive file and try the next level
zip.Dispose();
zip = null; //.reset();
}
}
return(std.errc.no_such_file_or_directory);
}